Abstract:
An inkjet printer that has a printhead for printing onto a media substrate, a reservoir for supplying ink to the printhead, a pump for drawing ink from the reservoir and pumping ink into the printhead and, a valve arrangement for selectively opening fluid communication between the pump and the printhead, and closing fluid communication between the pump and the printhead while opening fluid communication between the reservoir and the printhead.

Description:
FIELD OF THE INVENTION 
     The present invention relates to printers and in particular the fluidic architecture of inkjet printers. 
     CO-PENDING APPLICATIONS 
     The following application has been filed by the Applicant simultaneously with the present application: Ser. No. 11/872,718 
     The disclosure of this co-pending application is incorporated herein by reference. The above application has been identified by its filing docket number, which will be substituted with the corresponding application number, once assigned. 
     CROSS REFERENCES TO RELATED APPLICATIONS 
     Various methods, systems and apparatus relating to the present invention are disclosed in the following U.S. patents/patent applications filed by the applicant or assignee of the present invention: 
     
       
         
               
               
               
               
               
               
             
           
               
                   
               
             
             
               
                 6,276,850 
                 6,520,631 
                 6,158,907 
                 6,539,180 
                 6,270,177 
                 6,405,055 
               
               
                 6,628,430 
                 6,835,135 
                 6,626,529 
                 6,981,769 
                 7,125,338 
                 7,125,337 
               
               
                 7,136,186 
                 10/920,372 
                 7,145,689 
                 7,130,075 
                 7,081,974 
                 7,177,055 
               
               
                 7,209,257 
                 6,443,555 
                 7,161,715 
                 7,154,632 
                 7,158,258 
                 7,148,993 
               
               
                 7,075,684 
                 10/943,905 
                 10/943,906 
                 10/943,904 
                 10/943,903 
                 10/943,902 
               
               
                 6,966,659 
                 6,988,841 
                 7,077,748 
                 7,255,646 
                 7,070,270 
                 7,014,307 
               
               
                 7,158,809 
                 7,217,048 
                 11/225,172 
                 11/255,942 
                 11/329,039 
                 11/329,040 
               
               
                 7,271,829 
                 11/442,189 
                 11/474,280 
                 11/483,061 
                 11/503,078 
                 11/520,735 
               
               
                 11/505,858 
                 11/525,850 
                 11/583,870 
                 11/592,983 
                 11/592,208 
                 11/601,828 
               
               
                 11/635,482 
                 11/635,526 
                 10/466,440 
                 7,215,441 
                 11/650,545 
                 11/653,241 
               
               
                 11/653,240 
                 7,056,040 
                 6,942,334 
                 11/706,300 
                 11/740,265 
                 11/737,720 
               
               
                 11/739,056 
                 11/740,204 
                 11/740,223 
                 11/753,557 
                 11/750,285 
                 11,758,648 
               
               
                 11/778,559 
                 11,834,634 
                 11/838,878 
                 11,845,669 
                 6,799,853 
                 7,237,896 
               
               
                 6,749,301 
                 10/451,722 
                 7,137,678 
                 7,252,379 
                 7,144,107 
                 10/503,900 
               
               
                 10/503,898 
                 10/503,897 
                 7,220,068 
                 7,270,410 
                 7,241,005 
                 7,108,437 
               
               
                 7,140,792 
                 10/503,922 
                 7,224,274 
                 10/503,917 
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                 10/503,925 
               
               
                 10/503,927 
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                 10/503,929 
                 10/503,885 
                 7,195,325 
                 7,229,164 
               
               
                 7,150,523 
                 10/503,889 
                 7,154,580 
                 6,906,778 
                 7,167,158 
                 7,128,269 
               
               
                 6,688,528 
                 6,986,613 
                 6,641,315 
                 10/503,890 
                 10/503,891 
                 7,150,524 
               
               
                 7,155,395 
                 6,915,140 
                 6,999,206 
                 6,795,651 
                 6,883,910 
                 7,118,481 
               
               
                 7,136,198 
                 7,092,130 
                 6,786,661 
                 6,808,325 
                 10/920,368 
                 10/920,284 
               
               
                 7,219,990 
                 10/920,283 
                 6,750,901 
                 6,476,863 
                 6,788,336 
                 6,322,181 
               
               
                 6,597,817 
                 6,227,648 
                 6,727,948 
                 6,690,419 
                 10/470,947 
                 6,619,654 
               
               
                 6,969,145 
                 6,679,582 
                 10/470,942 
                 6,568,670 
                 6,866,373 
                 10/102,696 
               
               
                 7,008,044 
                 6,742,871 
                 6,966,628 
                 6,644,781 
                 6,969,143 
                 6,767,076 
               
               
                 6,834,933 
                 6,692,113 
                 6,913,344 
                 6,727,951 
                 7,128,395 
                 7,036,911 
               
               
                 7,032,995 
                 6,969,151 
                 6,955,424 
                 6,969,162 
                 10/919,249 
                 6942315-B2 
               
               
                 11/006,577 
                 7,234,797 
                 6,986,563 
                 11/063,577 
                 11/045,442 
                 11/124,044 
               
               
                 11/124,284 
                 7,077,330 
                 6,196,541 
                 11/149,389 
                 11/185,725 
                 7,226,144 
               
               
                 11/202,344 
                 7,267,428 
                 11/248,423 
                 11/248,422 
                 7,093,929 
                 11/282,769 
               
               
                 11/330,060 
                 11/442,111 
                 11/472,406 
                 11/499,806 
                 11/499,710 
                 6,195,150 
               
               
                 11,749,156 
                 11,782,588 
                 11/854,435 
                 11/853,817 
                 6,362,868 
                 6,831,681 
               
               
                 6,431,669 
                 6,362,869 
                 6,472,052 
                 6,356,715 
                 6,894,694 
                 6,636,216 
               
               
                 6,366,693 
                 6,329,990 
                 6,459,495 
                 6,137,500 
                 6,690,416 
                 7,050,143 
               
               
                 6,398,328 
                 7,110,024 
                 6,431,704 
                 6,879,341 
                 6,415,054 
                 6,665,454 
               
               
                 6,542,645 
                 6,486,886 
                 6,381,361 
                 6,317,192 
                 6,850,274 
                 09/113,054 
               
               
                 6,646,757 
                 6,624,848 
                 6,357,135 
                 6,271,931 
                 6,353,772 
                 6,106,147 
               
               
                 6,665,008 
                 6,304,291 
                 6,305,770 
                 6,289,262 
                 6,315,200 
                 6,217,165 
               
               
                 6,496,654 
                 6,859,225 
                 6,924,835 
                 6,647,369 
                 6,943,830 
                 09/693,317 
               
               
                 7,021,745 
                 6,712,453 
                 6,460,971 
                 6,428,147 
                 6,416,170 
                 6,402,300 
               
               
                 6,464,340 
                 6,612,687 
                 6,412,912 
                 6,447,099 
                 6,837,567 
                 6,505,913 
               
               
                 7,128,845 
                 6,733,684 
                 7,249,108 
                 6,566,858 
                 6,331,946 
                 6,246,970 
               
               
                 6,442,525 
                 09/517,384 
                 09/505,951 
                 6,374,354 
                 7,246,098 
                 6,816,968 
               
               
                 6,757,832 
                 6,334,190 
                 6,745,331 
                 7,249,109 
                 10/203,559 
                 7,197,642 
               
               
                 7,093,139 
                 10/636,263 
                 10/636,283 
                 10/866,608 
                 7,210,038 
                 10/902,833 
               
               
                 10/940,653 
                 10/942,858 
                 11/706,329 
                 11/757,385 
                 11/758,642 
                 7,119,836 
               
               
                 10/322,698 
                 10/642,331 
                 10/636,285 
                 7,170,652 
                 6,967,750 
                 6,995,876 
               
               
                 7,099,051 
                 7,172,191 
                 7,243,916 
                 7,222,845 
                 11/239,232 
                 11/055,276 
               
               
                 7,063,940 
                 11/107,942 
                 7,193,734 
                 7,086,724 
                 7,090,337 
                 11/185,952 
               
               
                 7,140,717 
                 11/190,902 
                 11/209,711 
                 7,256,824 
                 7,140,726 
                 7,156,512 
               
               
                 7,186,499 
                 11/478,585 
                 11/525,862 
                 11/540,574 
                 11/583,875 
                 11/592,181 
               
               
                 6,750,944 
                 11/599,336 
                 11/650,548 
                 11,744,183 
                 11/758,646 
                 11/778,561 
               
               
                 11/839,532 
                 11/838,874 
                 11/853,021 
                 11/869,710 
                 11/868,531 
                 10/636,225 
               
               
                 10/510,094 
                 6,985,207 
                 6,773,874 
                 6,650,836 
                 10/666,495 
                 10/636,224 
               
               
                 7,250,975 
                 10/636,214 
                 6,880,929 
                 7,236,188 
                 7,236,187 
                 7,155,394 
               
               
                 10/636,219 
                 10/636,223 
                 7,055,927 
                 6,986,562 
                 7,052,103 
                 10/656,469 
               
               
                 10/656,281 
                 10/656,791 
                 10/666,124 
                 10/683,217 
                 10/683,197 
                 7,095,533 
               
               
                 6,914,686 
                 6,896,252 
                 6,820,871 
                 6,834,851 
                 6,848,686 
                 6,830,246 
               
               
                 6,851,671 
                 10/729,098 
                 7,092,011 
                 7,187,404 
                 10/729,159 
                 10/753,458 
               
               
                 6,878,299 
                 6,929,348 
                 6,921,154 
                 10/780,625 
                 10/804,042 
                 6,913,346 
               
               
                 10/831,238 
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                 10/831,234 
               
               
                 10/831,233 
                 7,246,897 
                 7,077,515 
                 10/831,235 
                 10/853,336 
                 10/853,659 
               
               
                 10/853,681 
                 6,913,875 
                 7,021,758 
                 7,033,017 
                 7,161,709 
                 7,099,033 
               
               
                 7,147,294 
                 7,156,494 
                 11/012,024 
                 11/011,925 
                 7,032,998 
                 7,044,585 
               
               
                 11/007,250 
                 6,994,424 
                 11/006,787 
                 7,258,435 
                 7,097,263 
                 7,001,012 
               
               
                 7,004,568 
                 7,040,738 
                 7,188,933 
                 7,027,080 
                 7,025,446 
                 6,991,321 
               
               
                 7,131,715 
                 7,261,392 
                 7,207,647 
                 7,182,435 
                 7,097,285 
                 11/228,410 
               
               
                 7,097,284 
                 7,083,264 
                 7,147,304 
                 7,232,203 
                 7,156,498 
                 7,201,471 
               
               
                 11/501,772 
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                 7,210,764 
                 11/635,524 
                 11/706,379 
               
               
                 11/730,386 
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                 11/753,568 
                 11/782,591 
                 11/859,783 
                 6,710,457 
               
               
                 6,775,906 
                 6,507,099 
                 7,221,043 
                 7,107,674 
                 7,154,172 
                 11/442,400 
               
               
                 7,247,941 
                 11/736,540 
                 11/758,644 
                 6,530,339 
                 6,631,897 
                 6,851,667 
               
               
                 6,830,243 
                 6,860,479 
                 6,997,452 
                 7,000,913 
                 7,204,482 
                 11/212,759 
               
               
                 11/281,679 
                 11/730,409 
                 6,238,044 
                 6,425,661 
                 11/003,786 
                 7,258,417 
               
               
                 11/003,418 
                 11/003,334 
                 7,270,395 
                 11/003,404 
                 11/003,419 
                 11/003,700 
               
               
                 7,255,419 
                 11/003,618 
                 7,229,148 
                 7,258,416 
                 7,273,263 
                 7,270,393 
               
               
                 6,984,017 
                 11/003,699 
                 11/071,473 
                 7,156,497 
                 11/601,670 
                 11,748,482 
               
               
                 11/778,563 
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                 11/853,816 
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                 11/856,694 
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                 11/003,702 
               
               
                 11/003,684 
                 7,246,875 
                 11/003,617 
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                 11,853,777 
                 11/293,800 
               
               
                 11/293,802 
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                 11/482,968 
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                 6,431,777 
                 6,334,664 
               
               
                 6,447,113 
                 7,239,407 
                 6,398,359 
                 6,652,089 
                 6,652,090 
                 7,057,759 
               
               
                 6,631,986 
                 7,187,470 
                 11/315,356 
                 11/501,775 
                 11,744,210 
                 11/859,784 
               
               
                 6,471,331 
                 6,676,250 
                 6,347,864 
                 6,439,704 
                 6,425,700 
                 6,588,952 
               
               
                 6,626,515 
                 6,722,758 
                 6,871,937 
                 11/060,803 
                 11/097,266 
                 11/097,267 
               
               
                 11/685,084 
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                 11/685,090 
                 11/740,925 
                 11/763,444 
                 11/763,443 
               
               
                 7,249,942 
                 7,206,654 
                 7,162,324 
                 7,162,325 
                 7,231,275 
                 7,146,236 
               
               
                 10/753,475 
                 10/753,499 
                 6,997,698 
                 7,220,112 
                 7,231,276 
                 10/753,440 
               
               
                 7,220,115 
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                 7,144,242 
                 11/499,746 
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                 11/525,858 
               
               
                 11/545,501 
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                 11/736,554 
                 11/739,047 
               
               
                 11,749,159 
                 11/739,073 
                 11/775,160 
                 11/853,755 
                 TEST 
                 6,786,420 
               
               
                 6,827,282 
                 6,948,661 
                 7,073,713 
                 10/983,060 
                 7,093,762 
                 7,083,108 
               
               
                 7,222,799 
                 7,201,319 
                 11/442,103 
                 11/739,071 
                 11/518,238 
                 11/518,280 
               
               
                 11/518,244 
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                 7,032,899 
                 6,854,724 
                 11/084,237 
               
               
                 11/084,240 
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                 11/357,296 
                 11/357,298 
                 11/357,297 
                 6,350,023 
               
               
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                 6,592,207 
                 6,439,699 
                 6,312,114 
                 11/246,676 
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                 7,040,823 
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                 10/922,836 
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                 10/922,848 
                 10/922,843 
                 7,125,185 
                 7,229,226 
                 11/513,386 
                 11/753,559 
               
               
                 10/815,621 
                 7,243,835 
                 10/815,630 
                 10/815,637 
                 10/815,638 
                 7,251,050 
               
               
                 10/815,642 
                 7,097,094 
                 7,137,549 
                 10/815,618 
                 7,156,292 
                 11,738,974 
               
               
                 10/815,635 
                 10/815,647 
                 10/815,634 
                 7,137,566 
                 7,131,596 
                 7,128,265 
               
               
                 7,207,485 
                 7,197,374 
                 7,175,089 
                 10/815,617 
                 10/815,620 
                 7,178,719 
               
               
                 10/815,613 
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                 7,270,266 
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                 11/446,240 
               
               
                 11/488,162 
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                 11/488,166 
                 7,267,273 
                 11/834,628 
                 11/839,497 
                 10/815,636 
                 7,128,270 
               
               
                 11/041,650 
                 11/041,651 
                 11/041,652 
                 11/041,649 
                 11/041,610 
                 11,863,253 
               
               
                 11,863,255 
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                 11,863,262 
                 11/041,609 
                 11/041,626 
               
               
                 11/041,627 
                 11/041,624 
                 11/041,625 
                 11,863,268 
                 11,863,269 
                 11,863,270 
               
               
                 11,863,271 
                 11,863,273 
                 76,584,733 
                 11/041,556 
                 11/041,580 
                 11/041,723 
               
               
                 11/041,698 
                 11/041,648 
                 11,863,263 
                 11,863,264 
                 11,863,265 
                 11,863,266 
               
               
                 11,863,267 
                 10/815,609 
                 7,150,398 
                 7,159,777 
                 10/815,610 
                 7,188,769 
               
               
                 7,097,106 
                 7,070,110 
                 7,243,849 
                 11/442,381 
                 11/480,957 
                 11/764,694 
               
               
                 6,227,652 
                 6,213,588 
                 6,213,589 
                 6,231,163 
                 6,247,795 
                 6,394,581 
               
               
                 6,244,691 
                 6,257,704 
                 6,416,168 
                 6,220,694 
                 6,257,705 
                 6,247,794 
               
               
                 6,234,610 
                 6,247,793 
                 6,264,306 
                 6,241,342 
                 6,247,792 
                 6,264,307 
               
               
                 6,254,220 
                 6,234,611 
                 6,302,528 
                 6,283,582 
                 6,239,821 
                 6,338,547 
               
               
                 6,247,796 
                 6,557,977 
                 6,390,603 
                 6,362,843 
                 6,293,653 
                 6,312,107 
               
               
                 6,227,653 
                 6,234,609 
                 6,238,040 
                 6,188,415 
                 6,227,654 
                 6,209,989 
               
               
                 6,247,791 
                 6,336,710 
                 6,217,153 
                 6,416,167 
                 6,243,113 
                 6,283,581 
               
               
                 6,247,790 
                 6,260,953 
                 6,267,469 
                 6,588,882 
                 6,742,873 
                 6,918,655 
               
               
                 6,547,371 
                 6,938,989 
                 6,598,964 
                 6,923,526 
                 6,273,544 
                 6,309,048 
               
               
                 6,420,196 
                 6,443,558 
                 6,439,689 
                 6,378,989 
                 6,848,181 
                 6,634,735 
               
               
                 6,299,289 
                 6,299,290 
                 6,425,654 
                 6,902,255 
                 6,623,101 
                 6,406,129 
               
               
                 6,505,916 
                 6,457,809 
                 6,550,895 
                 6,457,812 
                 7,152,962 
                 6,428,133 
               
               
                 7,216,956 
                 7,080,895 
                 11/144,844 
                 7,182,437 
                 11/599,341 
                 11/635,533 
               
               
                 11/607,976 
                 11/607,975 
                 11/607,999 
                 11/607,980 
                 11/607,979 
                 11/607,978 
               
               
                 11/735,961 
                 11/685,074 
                 11/696,126 
                 11/696,144 
                 11/696,650 
                 11/763,446 
               
               
                 6,224,780 
                 6,235,212 
                 6,280,643 
                 6,284,147 
                 6,214,244 
                 6,071,750 
               
               
                 6,267,905 
                 6,251,298 
                 6,258,285 
                 6,225,138 
                 6,241,904 
                 6,299,786 
               
               
                 6,866,789 
                 6,231,773 
                 6,190,931 
                 6,248,249 
                 6,290,862 
                 6,241,906 
               
               
                 6,565,762 
                 6,241,905 
                 6,451,216 
                 6,231,772 
                 6,274,056 
                 6,290,861 
               
               
                 6,248,248 
                 6,306,671 
                 6,331,258 
                 6,110,754 
                 6,294,101 
                 6,416,679 
               
               
                 6,264,849 
                 6,254,793 
                 6,245,246 
                 6,855,264 
                 6,235,211 
                 6,491,833 
               
               
                 6,264,850 
                 6,258,284 
                 6,312,615 
                 6,228,668 
                 6,180,427 
                 6,171,875 
               
               
                 6,267,904 
                 6,245,247 
                 6,315,914 
                 7,169,316 
                 6,526,658 
                 7,210,767 
               
               
                 11/056,146 
                 11/635,523 
                 6,665,094 
                 6,450,605 
                 6,512,596 
                 6,654,144 
               
               
                 7,125,090 
                 6,687,022 
                 7,072,076 
                 7,092,125 
                 7,215,443 
                 7,136,195 
               
               
                 7,077,494 
                 6,877,834 
                 6,969,139 
                 10/636,227 
                 10/636,265 
                 6,912,067 
               
               
                 7,277,205 
                 7,154,637 
                 10/636,230 
                 7,070,251 
                 6,851,782 
                 10/636,211 
               
               
                 10/636,247 
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                 7,079,286 
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                 7,065,247 
                 7,027,177 
               
               
                 7,218,415 
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                 10/990,382 
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                 11/124,231 
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                 7,187,469 
               
               
                 7,196,820 
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                 11/329,041 
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                 7,245,399 
                 11/524,911 
               
               
                 11/640,267 
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                 11/737,142 
                 11/764,729 
                 11/834,637 
               
               
                 11/853,019 
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                 11/305,274 
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                 11/305,152 
               
               
                 11/305,158 
                 11/305,008 
                 6,231,148 
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                 6,312,070 
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                 7,006,143 
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                 11/033,145 
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                 10/815,624 
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                 10/913,372 
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                 10/913,376 
               
               
                 7,122,076 
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                 11/172,816 
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                 11/482,986 
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                 11/454,899 
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                 11/831,961 
                 11/831,962 
                 11/831,963 
                 60,951,700 
                 11/832,629 
                 11/832,637 
               
               
                 60,971,535 
                 10/407,212 
                 7,252,366 
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                 7,275,811 
               
               
                 10/884,889 
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                 10/922,884 
               
               
                 10/922,879 
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                 10/922,888 
                 10/922,874 
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                 10/922,871 
               
               
                 10/922,880 
                 10/922,881 
                 10/922,882 
                 10/922,883 
                 10/922,878 
                 10/922,872 
               
               
                 10/922,876 
                 10/922,886 
                 10/922,877 
                 7,147,792 
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                 11/159,193 
               
               
                 11/491,378 
                 11,766,713 
                 11/841,647 
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                 11/482,967 
               
               
                 11/482,966 
                 11/482,988 
                 11/482,989 
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                 11/293,825 
               
               
                 11/293,841 
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                 11/124,158 
               
               
                 11/124,196 
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                 11/124,162 
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                 11/124,154 
               
               
                 11/124,198 
                 11/124,153 
                 11/124,151 
                 11/124,160 
                 11/124,192 
                 11/124,175 
               
               
                 11/124,163 
                 11/124,149 
                 11/124,152 
                 11/124,173 
                 11/124,155 
                 7,236,271 
               
               
                 11/124,174 
                 11/124,194 
                 11/124,164 
                 11/124,200 
                 11/124,195 
                 11/124,166 
               
               
                 11/124,150 
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                 11/124,182 
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                 11/124,191 
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                 11/124,189 
                 11/124,190 
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                 11/124,177 
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                 11/124,179 
                 11/124,169 
               
               
                 11/187,976 
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                 11/482,979 
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                 11/853,018 
               
               
                 11/228,540 
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                 11/228,490 
                 11/228,531 
               
               
                 11/228,504 
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                 11/228,497 
                 11/228,487 
                 11/228,529 
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                 11/228,518 
               
               
                 11/228,536 
                 11/228,496 
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                 11/228,526 
               
               
                 11/228,539 
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                 11/228,524 
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                 11/228,527 
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                 11/228,522 
               
               
                 11/228,515 
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                 11/228,509 
               
               
                 11/228,492 
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                 11/228,514 
               
               
                 11/228,494 
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                 11/228,486 
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                 11/228,477 
                 11/228,485 
               
               
                 11/228,483 
                 11/228,521 
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                 11/228,513 
                 11/228,503 
               
               
                 11/228,480 
                 11/228,535 
                 11/228,478 
                 11/228,479 
                 6,238,115 
                 6,386,535 
               
               
                 6,398,344 
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                 6,860,664 
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                 7,024,995 
                 10/636,245 
                 6,926,455 
               
               
                 7,056,038 
                 6,869,172 
                 7,021,843 
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                 6,981,809 
               
               
                 11/060,804 
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                 11/155,544 
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                 11/281,421 
               
               
                 7,249,904 
                 11/737,726 
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                 11/863,246 
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                 11/865,650 
               
               
                 6,087,638 
                 6,340,222 
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                 6,286,935 
               
               
                 6,044,646 
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                 10/868,866 
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                 11/242,916 
               
               
                 11/242,917 
                 11/144,799 
                 11/198,235 
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                 11/766,052 
               
               
                 7,152,972 
                 11/592,996 
                 D529952 
                 6,390,605 
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                 6,612,110 
               
               
                 6,480,089 
                 6,460,778 
                 6,305,788 
                 6,426,014 
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                 6,457,795 
               
               
                 6,315,399 
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                 7,040,736 
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                 6,540,319 
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                 6,991,310 
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                 7,267,423 
               
               
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                 7,155,911 
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                 11/228,407 
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                 11/329,163 
               
               
                 11/442,180 
                 11/450,431 
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                 11/482,951 
                 11/545,566 
               
               
                 11/583,826 
                 11/604,315 
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                 11/730,399 
               
               
                 11,749,121 
                 11/753,549 
                 11/834,630 
                   
                 7,095,309 
                 6,854,825 
               
               
                 6,623,106 
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                 7,075,677 
               
               
                 6,428,139 
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                 6,425,971 
                 7,063,993 
                 6,383,833 
               
               
                 6,955,414 
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                 6,746,105 
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                 6,412,904 
                 7,128,388 
               
               
                 6,398,343 
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                 6,793,323 
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                 6,676,245 
                 7,201,460 
               
               
                 6,464,332 
                 6,659,593 
                 6,478,406 
                 6,978,613 
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                 6,502,306 
               
               
                 6,966,111 
                 6,863,369 
                 6,428,142 
                 6,874,868 
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                 6,799,828 
               
               
                 6,896,358 
                 7,018,016 
                 10/296,534 
                 6,328,417 
                 6,322,194 
                 6,382,779 
               
               
                 6,629,745 
                 6,565,193 
                 6,609,786 
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                 6,684,503 
               
               
                 6,843,551 
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                 10/510,092 
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                 6,546,628 
               
               
                 10/510,098 
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                 7,175,260 
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                 10/510,207 
               
               
                 6,648,453 
                 6,834,932 
                 6,682,176 
                 6,998,062 
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                 10/534,830 
               
               
                 6,755,509 
                 10/534,813 
                 6,692,108 
                 10/534,811 
                 6,672,709 
                 10/534,823 
               
               
                 7,086,718 
                 10/534,881 
                 6,672,710 
                 10/534,812 
                 6,669,334 
                 10/534,804 
               
               
                 7,152,958 
                 10/534,817 
                 6,824,246 
                 7,264,336 
                 6,669,333 
                 10/534,815 
               
               
                 6,820,967 
                 10/534,883 
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                 7,264,335 
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                 7,222,943 
               
               
                 7,188,419 
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                 7,195,338 
               
               
                 7,252,775 
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                 11/706,324 
               
               
                 11/706,326 
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                 11,852,986 
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                 11/246,686 
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                 11/246,717 
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                 11/246,668 
               
               
                 11/246,697 
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                 11/246,667 
               
               
                 11/829,957 
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                 11/829,966 
               
               
                 11/829,967 
                 11/829,968 
                 11/829,969 
                 7,156,508 
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                 7,083,271 
               
               
                 7,165,834 
                 7,080,894 
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                 10/760,233 
               
               
                 10/760,246 
                 7,083,257 
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                 10/760,253 
               
               
                 10/760,255 
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                 10/760,238 
                 7,077,505 
               
               
                 7,198,354 
                 7,077,504 
                 10/760,189 
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                 10/760,232 
                 10/760,231 
               
               
                 7,152,959 
                 7,213,906 
                 7,178,901 
                 7,222,938 
                 7,108,353 
                 7,104,629 
               
               
                 11/446,227 
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                 11/474,279 
               
               
                 11/482,939 
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                 11/601,756 
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                 11/706,299 
               
               
                 11/706,965 
                 11/737,080 
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                 11/782,593 
               
               
                 11/246,684 
                 11/246,672 
                 11/246,673 
                 11/246,683 
                 11/246,682 
                 60/939,086 
               
               
                 11,860,538 
                 11,860,539 
                 11/860,540 
                 11,860,541 
                 11,860,542 
                 7,246,886 
               
               
                 7,128,400 
                 7,108,355 
                 6,991,322 
                 10/728,790 
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                 10/728,784 
               
               
                 10/728,783 
                 7,077,493 
                 6,962,402 
                 10/728,803 
                 7,147,308 
                 10/728,779 
               
               
                 7,118,198 
                 7,168,790 
                 7,172,270 
                 7,229,155 
                 6,830,318 
                 7,195,342 
               
               
                 7,175,261 
                 10/773,183 
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                 10/773,186 
                 7,134,744 
               
               
                 10/773,185 
                 7,134,743 
                 7,182,439 
                 7,210,768 
                 10/773,187 
                 7,134,745 
               
               
                 7,156,484 
                 7,118,201 
                 7,111,926 
                 10/773,184 
                 7,018,021 
                 11/060,751 
               
               
                 11/060,805 
                 11/188,017 
                 7,128,402 
                 11/298,774 
                 11/329,157 
                 11/490,041 
               
               
                 11/501,767 
                 11/499,736 
                 7,246,885 
                 7,229,156 
                 11/505,846 
                 11/505,857 
               
               
                 11/505,856 
                 11/524,908 
                 11/524,938 
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                 11/524,912 
                 11/592,999 
               
               
                 11/592,995 
                 11/603,825 
                 11/649,773 
                 11/650,549 
                 11/653,237 
                 11/706,378 
               
               
                 11/706,962 
                 11,749,118 
                 11/754,937 
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                 11/744,885 
                 11/779,850 
               
               
                 11/765,439 
                 11/842,950 
                 11/839,539 
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                 7,246,876 
               
               
                 11/097,299 
                 11/097,310 
                 11/097,213 
                 11/210,687 
                 11/097,212 
                 7,147,306 
               
               
                 7,261,394 
                 11/764,806 
                 11/782,595 
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                 11/482,977 
                 11/544,778 
               
               
                 11/544,779 
                 11/764,808 
                 11/756,624 
                 11/756,625 
                 11/756,626 
                 11/756,627 
               
               
                 11/756,628 
                 11/756,629 
                 11/756,630 
                 11/756,631 
                 7,156,289 
                 7,178,718 
               
               
                 7,225,979 
                 11/712,434 
                 11/084,796 
                 11/084,742 
                 11/084,806 
                 09/575,197 
               
               
                 09/575,197 
                 7,079,712 
                 7,079,712 
                 6,825,945 
                 6,825,945 
                 09/575,165 
               
               
                 09/575,165 
                 6,813,039 
                 6,813,039 
                 7,190,474 
                 6,987,506 
                 6,987,506 
               
               
                 6,824,044 
                 7,038,797 
                 7,038,797 
                 6,980,318 
                 6,980,318 
                 6,816,274 
               
               
                 6,816,274 
                 7,102,772 
                 7,102,772 
                 09/575,186 
                 09/575,186 
                 6,681,045 
               
               
                 6,681,045 
                 6,678,499 
                 6,679,420 
                 6,963,845 
                 6,976,220 
                 6,728,000 
               
               
                 6,728,000 
                 7,110,126 
                 7,173,722 
                 7,173,722 
                 6,976,035 
                 6,813,558 
               
               
                 6,766,942 
                 6,965,454 
                 6,995,859 
                 7,088,459 
                 7,088,459 
                 6,720,985 
               
               
                 09/609,303 
                 6,922,779 
                 6,978,019 
                 6,847,883 
                 7,131,058 
                 09/721,895 
               
               
                 09/607,843 
                 09/693,690 
                 6,959,298 
                 6,973,450 
                 7,150,404 
                 6,965,882 
               
               
                 7,233,924 
                 09/575,181 
                 09/575,181 
                 09/722,174 
                 7,175,079 
                 7,162,259 
               
               
                 6,718,061 
                 10/291,523 
                 10/291,471 
                 7,012,710 
                 6,825,956 
                 10/291,481 
               
               
                 7,222,098 
                 10/291,825 
                 7,263,508 
                 7,031,010 
                 6,972,864 
                 6,862,105 
               
               
                 7,009,738 
                 6,989,911 
                 6,982,807 
                 10/291,576 
                 6,829,387 
                 6,714,678 
               
               
                 6,644,545 
                 6,609,653 
                 6,651,879 
                 10/291,555 
                 10/291,510 
                 10/291,592 
               
               
                 10/291,542 
                 7,044,363 
                 7,004,390 
                 6,867,880 
                 7,034,953 
                 6,987,581 
               
               
                 7,216,224 
                 10/291,821 
                 7,162,269 
                 7,162,222 
                 10/291,822 
                 10/291,524 
               
               
                 10/291,553 
                 6,850,931 
                 6,865,570 
                 6,847,961 
                 10/685,523 
                 10/685,583 
               
               
                 7,162,442 
                 10/685,584 
                 7,159,784 
                 10/804,034 
                 10/793,933 
                 6,889,896 
               
               
                 10/831,232 
                 7,174,056 
                 6,996,274 
                 7,162,088 
                 10/943,874 
                 10/943,872 
               
               
                 10/944,044 
                 7,259,884 
                 10/944,043 
                 7,167,270 
                 10/943,877 
                 6,986,459 
               
               
                 10/954,170 
                 7,181,448 
                 10/981,626 
                 10/981,616 
                 10/981,627 
                 7,231,293 
               
               
                 7,174,329 
                 10/992,713 
                 11/006,536 
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                 11/020,260 
               
               
                 11/020,321 
                 11/020,319 
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                 11/051,032 
                 11/059,674 
               
               
                 11/107,944 
                 11/107,941 
                 11/082,940 
                 11/082,815 
                 11/082,827 
                 11/082,829 
               
               
                 6,991,153 
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                 11/124,256 
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                 11/154,676 
                 11/159,196 
               
               
                 11/182,002 
                 11/202,251 
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                 11/203,200 
                 11/202,218 
               
               
                 11/206,778 
                 11/203,424 
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                 11/227,239 
                 11/286,334 
               
               
                 7,225,402 
                 11/329,187 
                 11/349,143 
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                 11/491,121 
                 11/442,428 
               
               
                 11/454,902 
                 11/442,385 
                 11/478,590 
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                 11/520,170 
                 11/603,057 
               
               
                 11/706,964 
                 11/739,032 
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                 11/834,633 
                 11/830,848 
                 11/830,849 
               
               
                 11/839,542 
                 11/866,394 
                 7,068,382 
                 7,068,382 
                 7,007,851 
                 6,957,921 
               
               
                 6,457,883 
                 10/743,671 
                 7,044,381 
                 11/203,205 
                 7,094,910 
                 7,091,344 
               
               
                 7,122,685 
                 7,038,066 
                 7,099,019 
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                 7,062,651 
                 6,789,194 
               
               
                 6,789,194 
                 6,789,191 
                 6,789,191 
                 10/900,129 
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                 10/913,350 
               
               
                 10/982,975 
                 10/983,029 
                 11/331,109 
                 6,644,642 
                 6,644,642 
                 6,502,614 
               
               
                 6,502,614 
                 6,622,999 
                 6,622,999 
                 6,669,385 
                 6,669,385 
                 6,827,116 
               
               
                 7,011,128 
                 10/949,307 
                 6,549,935 
                 6,549,935 
                 6,987,573 
                 6,987,573 
               
               
                 6,727,996 
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                 11/754,311 
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                 D528156 
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                 D536031 
                 D531214 
                 7,237,888 
               
               
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                 11/223,019 
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                 D541849 
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                 7,222,939 
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                 7,108,343 
                 7,154,626 
                 7,079,292 
                 10/980,184 
                 7,233,421 
                 7,063,408 
               
               
                 10/983,082 
                 10/982,804 
                 7,032,996 
                 10/982,834 
                 10/982,833 
                 10/982,817 
               
               
                 7,217,046 
                 6,948,870 
                 7,195,336 
                 7,070,257 
                 10/986,813 
                 10/986,785 
               
               
                 7,093,922 
                 6,988,789 
                 10/986,788 
                 7,246,871 
                 10/992,748 
                 10/992,747 
               
               
                 7,187,468 
                 10/992,828 
                 7,196,814 
                 10/992,754 
                 7,268,911 
                 7,265,869 
               
               
                 7,128,384 
                 7,164,505 
                 11/003,595 
                 7,025,434 
                 11/003,481 
                 11/003,485 
               
               
                 7,206,098 
                 7,265,877 
                 7,193,743 
                 7,168,777 
                 11/006,734 
                 7,195,329 
               
               
                 7,198,346 
                 11/006,739 
                 11/013,363 
                 11/013,881 
                 6,959,983 
                 7,128,386 
               
               
                 7,097,104 
                 11/013,636 
                 7,083,261 
                 7,070,258 
                 7,083,275 
                 7,110,139 
               
               
                 6,994,419 
                 6,935,725 
                 11/026,046 
                 7,178,892 
                 7,219,429 
                 6,988,784 
               
               
                 11/026,135 
                 11/026,326 
                 11/064,005 
                 11/064,006 
                 7,178,903 
                 7,273,274 
               
               
                 7,083,256 
                 11/064,008 
                 11/064,009 
                 11/064,013 
                 6,974,206 
                 11/064,004 
               
               
                 7,066,588 
                 7,222,940 
                 11/075,918 
                 7,018,025 
                 7,221,867 
                 11/072,517 
               
               
                 7,188,938 
                 7,021,742 
                 7,083,262 
                 7,192,119 
                 11/083,021 
                 7,036,912 
               
               
                 7,175,256 
                 7,182,441 
                 7,083,258 
                 7,114,796 
                 7,147,302 
                 11/084,757 
               
               
                 7,219,982 
                 7,118,195 
                 7,229,153 
                 6,991,318 
                 7,108,346 
                 11/248,429 
               
               
                 11/239,031 
                 7,178,899 
                 7,066,579 
                 11/281,419 
                 11/298,633 
                 11/329,188 
               
               
                 11/329,140 
                 7,270,397 
                 7,258,425 
                 7,237,874 
                 7,152,961 
                 11/478,592 
               
               
                 7,207,658 
                 11/484,744 
                 11/488,867 
                 7,207,659 
                 11/525,857 
                 11/540,569 
               
               
                 11/583,869 
                 11/592,985 
                 11/601,762 
                 11/604,316 
                 11/604,309 
                 11/604,303 
               
               
                 11/643,844 
                 11/650,553 
                 11/655,940 
                 11/653,320 
                 11/706,294 
                 11/706,381 
               
               
                 11/706,323 
                 11/706,963 
                 11/713,660 
                 11/730,408 
                 11/696,186 
                 11/730,390 
               
               
                 11/737,139 
                 11/737,749 
                 11/740,273 
                 11,749,122 
                 11/754,361 
                 11,766,043 
               
               
                 11/764,775 
                 11/768,872 
                 11/775,156 
                 11/779,271 
                 11/779,272 
                 11/829,938 
               
               
                 11/839,502 
                 11,858,852 
                 9628 
                 5382 
                 6,485,123 
                 6,425,657 
               
               
                 6,488,358 
                 7,021,746 
                 6,712,986 
                 6,981,757 
                 6,505,912 
                 6,439,694 
               
               
                 6,364,461 
                 6,378,990 
                 6,425,658 
                 6,488,361 
                 6,814,429 
                 6,471,336 
               
               
                 6,457,813 
                 6,540,331 
                 6,454,396 
                 6,464,325 
                 6,443,559 
                 6,435,664 
               
               
                 6,412,914 
                 6,488,360 
                 6,550,896 
                 6,439,695 
                 6,447,100 
                 09/900,160 
               
               
                 6,488,359 
                 6,637,873 
                 10/485,738 
                 6,618,117 
                 10/485,737 
                 6,803,989 
               
               
                 7,234,801 
                 7,044,589 
                 7,163,273 
                 6,416,154 
                 6,547,364 
                 10/485,744 
               
               
                 6,644,771 
                 7,152,939 
                 6,565,181 
                 10/485,805 
                 6,857,719 
                 7,255,414 
               
               
                 6,702,417 
                 10/485,652 
                 6,918,654 
                 7,070,265 
                 6,616,271 
                 6,652,078 
               
               
                 6,503,408 
                 6,607,263 
                 7,111,924 
                 6,623,108 
                 6,698,867 
                 6,488,362 
               
               
                 6,625,874 
                 6,921,153 
                 7,198,356 
                 6,536,874 
                 6,425,651 
                 6,435,667 
               
               
                 10/509,997 
                 6,527,374 
                 10/510,154 
                 6,582,059 
                 10/510,152 
                 6,513,908 
               
               
                 7,246,883 
                 6,540,332 
                 6,547,368 
                 7,070,256 
                 6,508,546 
                 10/510,151 
               
               
                 6,679,584 
                 10/510,000 
                 6,857,724 
                 10/509,998 
                 6,652,052 
                 10/509,999 
               
               
                 6,672,706 
                 10/510,096 
                 6,688,719 
                 6,712,924 
                 6,588,886 
                 7,077,508 
               
               
                 7,207,654 
                 6,935,724 
                 6,927,786 
                 6,988,787 
                 6,899,415 
                 6,672,708 
               
               
                 6,644,767 
                 6,874,866 
                 6,830,316 
                 6,994,420 
                 6,954,254 
                 7,086,720 
               
               
                 7,240,992 
                 7,267,424 
                 7,128,397 
                 7,084,951 
                 7,156,496 
                 7,066,578 
               
               
                 7,101,023 
                 11/165,027 
                 11/202,235 
                 11/225,157 
                 7,159,965 
                 7,255,424 
               
               
                 11/349,519 
                 7,137,686 
                 7,201,472 
                 11/442,413 
                 11/504,602 
                 7,216,957 
               
               
                 11/520,572 
                 11/583,858 
                 11/583,895 
                 11/585,976 
                 11/635,488 
                 11/653,314 
               
               
                 11/706,952 
                 11/706,307 
                 11/785,109 
                 11/740,287 
                 11/754,367 
                 11/758,643 
               
               
                 11/778,572 
                 11,859,791 
                 11/863,260 
                 6,916,082 
                 6,786,570 
                 10/753,478 
               
               
                 6,848,780 
                 6,966,633 
                 7,179,395 
                 6,969,153 
                 6,979,075 
                 7,132,056 
               
               
                 6,832,828 
                 6,860,590 
                 6,905,620 
                 6,786,574 
                 6,824,252 
                 7,097,282 
               
               
                 6,997,545 
                 6,971,734 
                 6,918,652 
                 6,978,990 
                 6,863,105 
                 10/780,624 
               
               
                 7,194,629 
                 10/791,792 
                 6,890,059 
                 6,988,785 
                 6,830,315 
                 7,246,881 
               
               
                 7,125,102 
                 7,028,474 
                 7,066,575 
                 6,986,202 
                 7,044,584 
                 7,210,762 
               
               
                 7,032,992 
                 7,140,720 
                 7,207,656 
                 11/031,084 
                 11/048,748 
                 7,008,041 
               
               
                 7,011,390 
                 7,048,868 
                 7,014,785 
                 7,131,717 
                 11/148,236 
                 11/176,158 
               
               
                 7,182,436 
                 7,104,631 
                 7,240,993 
                 11/206,920 
                 11/202,217 
                 7,172,265 
               
               
                 11/231,876 
                 7,066,573 
                 11/298,635 
                 7,152,949 
                 11/442,161 
                 11/442,133 
               
               
                 11/442,126 
                 7,156,492 
                 11/478,588 
                 11/505,848 
                 11/520,569 
                 11/525,861 
               
               
                 11/583,939 
                 11/545,504 
                 11/583,894 
                 11/635,485 
                 11/730,391 
                 11/730,788 
               
               
                 11/749,148 
                 11/749,149 
                 11/749,152 
                 11/749,151 
                 11/759,886 
                 11/865,668 
               
               
                 6,824,257 
                 7,270,475 
                 6,971,811 
                 6,878,564 
                 6,921,145 
                 6,890,052 
               
               
                 7,021,747 
                 6,929,345 
                 6,811,242 
                 6,916,087 
                 6,905,195 
                 6,899,416 
               
               
                 6,883,906 
                 6,955,428 
                 10/882,775 
                 6,932,459 
                 6,962,410 
                 7,033,008 
               
               
                 6,962,409 
                 7,013,641 
                 7,204,580 
                 7,032,997 
                 6,998,278 
                 7,004,563 
               
               
                 6,910,755 
                 6,969,142 
                 6,938,994 
                 7,188,935 
                 10/959,049 
                 7,134,740 
               
               
                 6,997,537 
                 7,004,567 
                 6,916,091 
                 7,077,588 
                 6,918,707 
                 6,923,583 
               
               
                 6,953,295 
                 6,921,221 
                 7,001,008 
                 7,168,167 
                 7,210,759 
                 11/008,115 
               
               
                 11/011,120 
                 11/012,329 
                 6,988,790 
                 7,192,120 
                 7,168,789 
                 7,004,577 
               
               
                 7,052,120 
                 11/123,007 
                 6,994,426 
                 7,258,418 
                 7,014,298 
                 11/124,348 
               
               
                 11/177,394 
                 7,152,955 
                 7,097,292 
                 7,207,657 
                 7,152,944 
                 7,147,303 
               
               
                 11/209,712 
                 7,134,608 
                 7,264,333 
                 7,093,921 
                 7,077,590 
                 7,147,297 
               
               
                 11/239,029 
                 11/248,832 
                 11/248,428 
                 11/248,434 
                 7,077,507 
                 7,172,672 
               
               
                 7,175,776 
                 7,086,717 
                 7,101,020 
                 11/329,155 
                 7,201,466 
                 11/330,057 
               
               
                 7,152,967 
                 7,182,431 
                 7,210,666 
                 7,252,367 
                 11/450,586 
                 11/485,255 
               
               
                 11/525,860 
                 6,945,630 
                 7,018,294 
                 6,910,014 
                 6,659,447 
                 6,648,321 
               
               
                 7,082,980 
                 6,672,584 
                 7,073,551 
                 6,830,395 
                 10/309,025 
                 7,001,011 
               
               
                 6,880,922 
                 6,886,915 
                 6,644,787 
                 6,641,255 
                 7,066,580 
                 6,652,082 
               
               
                 10/309,036 
                 6,666,544 
                 6,666,543 
                 6,669,332 
                 6,984,023 
                 6,733,104 
               
               
                 6,644,793 
                 6,723,575 
                 6,953,235 
                 6,663,225 
                 7,076,872 
                 7,059,706 
               
               
                 7,185,971 
                 7,090,335 
                 6,854,827 
                 6,793,974 
                 10/636,258 
                 7,222,929 
               
               
                 6,739,701 
                 7,073,881 
                 7,155,823 
                 7,219,427 
                 7,008,503 
                 6,783,216 
               
               
                 6,883,890 
                 6,857,726 
                 10/636,274 
                 6,641,256 
                 6,808,253 
                 6,827,428 
               
               
                 6,802,587 
                 6,997,534 
                 6,959,982 
                 6,959,981 
                 6,886,917 
                 6,969,473 
               
               
                 6,827,425 
                 7,007,859 
                 6,802,594 
                 6,792,754 
                 6,860,107 
                 6,786,043 
               
               
                 6,863,378 
                 7,052,114 
                 7,001,007 
                 10/729,151 
                 10/729,157 
                 6,948,794 
               
               
                 6,805,435 
                 6,733,116 
                 10/683,006 
                 7,008,046 
                 6,880,918 
                 7,066,574 
               
               
                 6,983,595 
                 6,923,527 
                 7,275,800 
                 7,163,276 
                 7,156,495 
                 6,976,751 
               
               
                 6,994,430 
                 7,014,296 
                 7,059,704 
                 7,160,743 
                 7,175,775 
                 11/058,238 
               
               
                 7,097,283 
                 7,140,722 
                 11/123,009 
                 11/123,008 
                 7,080,893 
                 7,093,920 
               
               
                 7,270,492 
                 7,128,093 
                 7,052,113 
                 7,055,934 
                 11/155,627 
                 11/149,324 
               
               
                 11/159,197 
                 7,083,263 
                 7,145,592 
                 7,025,436 
                 11/281,444 
                 7,258,421 
               
               
                 11/478,591 
                 11/478,735 
                 7,226,147 
                 11/482,940 
                 7,195,339 
                 11/503,061 
               
               
                 11/505,938 
                 11/520,577 
                 11/525,863 
                 11/544,577 
                 11/540,576 
                 11/585,964 
               
               
                 11/592,991 
                 11/599,342 
                 11/600,803 
                 11/604,321 
                 11/604,302 
                 11/635,535 
               
               
                 11/635,486 
                 11/643,842 
                 11/655,987 
                 11/650,541 
                 11/706,301 
                 11/707,039 
               
               
                 11/730,388 
                 11/730,786 
                 11/730,785 
                 11/739,080 
                 11/764,746 
                 11/768,875 
               
               
                 11/779,847 
                 11/829,940 
                 11,847,240 
                 11/834,625 
                 11/863,210 
                 11/865,680 
               
               
                 7,067,067 
                 6,776,476 
                 6,880,914 
                 7,086,709 
                 6,783,217 
                 7,147,791 
               
               
                 6,929,352 
                 7,144,095 
                 6,820,974 
                 6,918,647 
                 6,984,016 
                 7,192,125 
               
               
                 6,824,251 
                 6,834,939 
                 6,840,600 
                 6,786,573 
                 7,144,519 
                 6,799,835 
               
               
                 6,959,975 
                 6,959,974 
                 7,021,740 
                 6,935,718 
                 6,938,983 
                 6,938,991 
               
               
                 7,226,145 
                 7,140,719 
                 6,988,788 
                 7,022,250 
                 6,929,350 
                 7,011,393 
               
               
                 7,004,566 
                 7,175,097 
                 6,948,799 
                 7,143,944 
                 10/965,737 
                 7,029,100 
               
               
                 6,957,811 
                 7,073,724 
                 7,055,933 
                 7,077,490 
                 7,055,940 
                 10/991,402 
               
               
                 7,234,645 
                 7,032,999 
                 7,066,576 
                 7,229,150 
                 7,086,728 
                 7,246,879 
               
               
                 11/144,809 
                 7,140,718 
                 11/144,802 
                 7,144,098 
                 7,044,577 
                 11/144,808 
               
               
                 11/172,896 
                 7,189,334 
                 7,055,935 
                 7,152,860 
                 11/203,188 
                 11/203,173 
               
               
                 11/202,343 
                 7,213,989 
                 11/225,156 
                 11/225,173 
                 11/228,433 
                 7,114,868 
               
               
                 7,168,796 
                 7,159,967 
                 11/272,425 
                 7,152,805 
                 11/298,530 
                 11/330,061 
               
               
                 7,133,799 
                 11/330,054 
                 11/329,284 
                 7,152,956 
                 7,128,399 
                 7,147,305 
               
               
                 11/446,241 
                 11/442,160 
                 7,246,884 
                 7,152,960 
                 11/442,125 
                 11/454,901 
               
               
                 11/442,134 
                 11/450,441 
                 11/474,274 
                 11/499,741 
                 7,270,399 
                 6,857,728 
               
               
                 6,857,729 
                 6,857,730 
                 6,989,292 
                 7,126,216 
                 6,977,189 
                 6,982,189 
               
               
                 7,173,332 
                 7,026,176 
                 6,979,599 
                 6,812,062 
                 6,886,751 
                 10/804,057 
               
               
                 10/804,036 
                 7,001,793 
                 6,866,369 
                 6,946,743 
                 10/804,048 
                 6,886,918 
               
               
                 7,059,720 
                 10/846,561 
                 10/846,562 
                 10/846,647 
                 10/846,649 
                 10/846,627 
               
               
                 6,951,390 
                 6,981,765 
                 6,789,881 
                 6,802,592 
                 7,029,097 
                 6,799,836 
               
               
                 7,048,352 
                 7,182,267 
                 7,025,279 
                 6,857,571 
                 6,817,539 
                 6,830,198 
               
               
                 6,992,791 
                 7,038,809 
                 6,980,323 
                 7,148,992 
                 7,139,091 
                 6,947,173 
               
               
                 7,101,034 
                 6,969,144 
                 6,942,319 
                 6,827,427 
                 6,984,021 
                 6,984,022 
               
               
                 6,869,167 
                 6,918,542 
                 7,007,852 
                 6,899,420 
                 6,918,665 
                 6,997,625 
               
               
                 6,988,840 
                 6,984,080 
                 6,845,978 
                 6,848,687 
                 6,840,512 
                 6,863,365 
               
               
                 7,204,582 
                 6,921,150 
                 7,128,396 
                 6,913,347 
                 7,008,819 
                 6,935,736 
               
               
                 6,991,317 
                 11/033,122 
                 7,055,947 
                 7,093,928 
                 7,100,834 
                 7,270,396 
               
               
                 7,187,086 
                 11/072,518 
                 7,032,825 
                 7,086,721 
                 11/171,428 
                 7,159,968 
               
               
                 7,010,456 
                 7,147,307 
                 7,111,925 
                 11/144,812 
                 7,229,154 
                 11/505,849 
               
               
                 11/520,570 
                 11/520,575 
                 11/546,437 
                 11/540,575 
                 11/583,937 
                 11/584,619 
               
               
                 11/592,211 
                 11/592,207 
                 11/635,489 
                 11/604,319 
                 11/635,490 
                 11/635,525 
               
               
                 11/650,540 
                 11/706,366 
                 11/706,310 
                 11/706,308 
                 11/785,108 
                 11/744,214 
               
               
                 11,744,218 
                 11,748,485 
                 11,748,490 
                 11/764,778 
                 11/766,025 
                 11/834,635 
               
               
                 11/839,541 
                 11/860,420 
                 11/865,693 
                 11/863,118 
                 11/866,307 
                 11/866,340 
               
               
                 11/869,684 
                 11/869,722 
                 11/869,694 
                 11/872,714 
               
               
                   
               
             
          
         
       
     
     The disclosures of these applications and patents are incorporated herein by reference. 
     BACKGROUND OF THE INVENTION 
     Inkjet printing is a popular and versatile form of print imaging. The Assignee has developed printers that eject ink through MEMS printhead IC&#39;s. These printhead IC&#39;s (integrated circuits) are formed using lithographic etching and deposition techniques used for semiconductor fabrication. 
     The micro-scale nozzle structures in MEMS printhead IC&#39;s allow a high nozzle density (nozzles per unit of IC surface area), high print resolutions, low power consumption, self cooling operation and therefore high print speeds. Such printheads are described in detail in U.S. Ser. No. 10/160,273 filed Jun. 4, 2002 and U.S. Ser. No. 10/728,804 filed on Dec. 8, 2003 to the present Assignee. The disclosures of these documents are incorporated herein by reference. 
     The small nozzle structures and high nozzle densities can create difficulties with nozzle clogging, de-priming, nozzle drying (decap), color mixing, nozzle flooding, bubble contamination in the ink stream and so on. Each of these issues can produce artifacts that are detrimental to the print quality. The component parts of the printer are designed to minimize the risk that these problems will occur. The optimum situation would be printer components whose inherent function is able to preclude these problem issues from arising. In reality, the many different types of operating conditions, and mishaps or unduly rough handling during transport or day to day operation, make it impossible to address the above problems via the ‘passive’ control of component design, material selection and so on. 
     To address this, the Applicant has developed printers with active control of the fluidic systems. These active fluidic systems are described in co-pending application Ser. Nos. 11/482,982; 11/482,983; 11/482,984; 11/495,818; 11/495,819; 11/677,049; 11/677,050; 11/677,051, the contents of which are incorporated by cross reference. While these systems provide the user with the ability to actively manage the static and dynamic fluid conditions throughout the printer, it has been found that the active components within a printer are responsible for a large proportion of the ink borne contaminants. Pumps in particular are prone to shedding particles into the ink flow which can be detrimental to the operation of the nozzles. The wear and friction of surfaces acting against each other eventually generate particle which are directly entrained in the ink flow. Many of the above referenced fluidic designs use peristaltic pumps which introduce additional problems. The flexible tubing within the pump can eventually crack and leak, the tubing loses elasticity and no longer returns to a fully open condition, and the pump has a high torque requirement because of the need to compress the tubing enough to form a seal. To meet the torque requirements, the pump needs to be relatively large which is counter a compact form factor for the printer as a whole. 
     Ink borne contaminants can be removed with a filter upstream of the printhead. However, the particle size requires the filter pore size to be very small. To maintain the ink flow rate required by a high speed, pagewidth printhead, the filter surface area needs to be impractically large and precludes the compactness required by market expectations. 
     SUMMARY OF THE INVENTION 
     Accordingly, the present invention provides an inkjet printer comprising: 
     a printhead for printing onto a media substrate; 
     a reservoir for supplying ink to the printhead; 
     a pump for drawing ink from the reservoir and pumping ink into the printhead; and, 
     a valve arrangement for selectively opening fluid communication between the pump and the printhead, and closing fluid communication between the pump and the printhead while opening fluid communication between the reservoir and the printhead. 
     The invention is predicated on the realization that the purging and priming functions of the pump can be performed while in fluid communication with the printhead and then be fluidically isolated from the printhead when printing. By removing the pump from the direct fluid line between the reservoir and the printhead, the valve arrangement allows it to connect to the reservoir or the printhead only when necessary. The purging and priming operations have become a two-stage processes where the pump initially draws a charge of ink from the reservoir and then delivers it to the printhead. The ink from the pump can be passed through a fine filter to remove any particulate contaminants without then constricting the ink flow from the reservoir during normal printing operations. 
     Preferably, the printer further comprises a filter for ink flowing from the pump to the printhead, the filter being positioned such that it is not in fluid communication with the printhead when the valve arrangement is configured for fluid communication between the reservoir and the printhead. 
     Preferably, the valve arrangement is configured such that the pump is not in fluid communication with the reservoir whenever the pump is in fluid communication with the printhead. 
     Preferably, the valve arrangement is configured such that the pump is not in fluid communication with the reservoir whenever the reservoir is in fluid communication with the printhead. 
     Preferably, the printer further comprises an upstream line for establishing fluid communication between the reservoir and the printhead wherein the valve arrangement is a three-way valve in the upstream line and the pump connects to the three-way valve via a branch line, the three way valve having three settings; a first setting connecting the upstream line to the reservoir to the upstream line to the printhead while closing the branch line, a second setting connecting the branch line to the upstream line to the reservoir while closing the upstream line to the printhead, and a third setting connecting the branch line to the upstream line to the printhead while closing the upstream line to the reservoir. 
     Preferably, the pump has a chamber with a reciprocating plunger. In another embodiment, the pump is a bulb of elastomeric material for holding a volume of ink and an actuator for selectively compressing the bulb. 
     Preferably, the reservoir has a pressure regulator for establishing a predetermined pressure in a headspace above the ink in the reservoir, the predetermined pressure being less than atmospheric pressure. In a further preferred form, the pump draws ink from the reservoir to reduce the pressure in the headspace to the predetermined pressure in preparation for printing. 
     Preferably, the ink drawn from the reservoir by the pump in preparation for printing is pumped into the printhead in preparation for printing. Preferably, the printhead has a distribution manifold and a plurality of printhead integrated circuits mounted to the distribution manifold such that priming the distribution manifold with ink also primes the printhead integrated circuits. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Preferred embodiments of the invention will now be described by way of example only, with reference to the accompanying drawings in which: 
         FIG. 1  shows a schematic diagram of a printer fluidic system according to the present invention whilst in a standby mode; 
         FIG. 2  shows the fluidic system of  FIG. 1  in a ink tank pressurization mode; 
         FIG. 3  shows the fluidic system of  FIG. 1  in a printhead priming/purging mode; 
         FIG. 4  shows the fluidic system of  FIG. 1  in the printing mode; and, 
         FIG. 5  schematically shows an alternative ink pump arrangement for the fluidic system. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring to  FIGS. 1 to 3 , the printer fluidics system is shown schematically for the purposes of illustration. The fluidic architecture shown in the figures is for a single ink line for one color only. A color printer would have separate lines and ink tanks for each ink color. Most of the individual components within the system are shown and described in much greater detail in the Applicant&#39;s co-pending application U.S. Ser. No. 11/688,863, filed on Mar. 21, 2007, the contents of which are incorporated herein by cross reference. Components of the present system that are not shown in the cross referenced document, are commercially available. 
     The fluidic system shown in  FIGS. 1 to 3  has a printhead  2  supplied with ink  46  from an ink tank  8  via an upstream ink line  20 . The upstream ink line  20  has a three-way valve  18  which connects to the pump  30  via a filter  32 . A downstream line  24  connects the printhead  2  to a sump  28  via a shut off valve  26 . The printhead has a maintenance station  22  for capping, blotting and wiping the nozzles. A drain line  34  connects the maintenance station  22  to the sump  28 . 
     The printhead  2  is an assembly of an ink distribution manifold  4  on which a series of printhead integrated circuits (ICs)  6  are mounted. The printhead ICs  6  define the nozzle arrays which eject the ink to the media substrate. The nozzles are MEMS devices which can be thermally actuated such as those described in U.S. Ser. No. 11/482,953 filed on Jul. 10, 2006 or mechanically actuated such as those disclosed in U.S. Ser. No. 10/160,273 filed Jun. 4, 2002. 
     The ink distribution manifold  4  is an LCP molding with a system of large channels feeding a network of smaller channels to supply the ink to many points along the length of each printhead IC  6 . An embodiment of the distribution manifold  4  and the printhead ICs  6  is disclosed in detail in U.S. Ser. No. 11/688,863 filed Mar. 21, 2007 reference listed above. This document also details the manner in which the printhead is primed with ink or, if necessary, purged of ink to correct any cross channel color contamination and/or bubble removal. 
     The ink tank  8  and the bubble point pressure regulator  10  are described in co-pending U.S. Ser. No. 11/872,714 filed Oct. 16, 2007, incorporated herein by reference. However, for the purposes of this description, the regulator  10  is shown as a bubble outlet  76  in the tank headspace  12  and vented to atmosphere via microchannel  74  extending to an air inlet  78 . Ink is retained in the microchannel  74  by capillary action. As the printhead IC&#39;s  6  consume ink, the pressure in the tank  8  drops until the pressure difference at the bubble outlet  76  sucks air into the tank. The air is drawn through an air filter  16  to remove contaminants that might clog or obstruct the microchannel  74 . The filtered air forms a bubble in the ink within the micrchannel  74  which travels to the outlet  76 . This pressure difference is the bubble point pressure and will depend on the diameter (or smallest dimension) of the microchannel  74  and the Laplace pressure of the ink meniscus. This maintains a constant negative pressure in the headspace  12 . The hydrostatic pressure in the ink at the outlet to the tank  8  will vary as the ink level drops. To minimize this variation, the ink tanks  8  are dimensioned to be short and squat. 
       FIG. 1  shows the printer is a standby mode. The printhead  2  is fluidically isolated from the ink tank  8  by the three-way valve  18 . This prevents any ink mixing across the nozzles of the printhead ICs  6  from diffusing up into the tank  8 . The valve  18  connects the tank  8  to the pump  30  via the branch line  36 . The pump  30  is a piston  38  that reciprocates in a chamber  40 . It is possible to use a peristaltic pump but these suffer the problems discussed above in the background to the invention. Namely, the potential for failure of the tubes, inaccuracy as the tubes no longer return to their original uncompressed shape and high torque requirements. A more suitable pump is shown in  FIG. 5 . The branch line  36  feeds a bulb  30  of elastomeric material. Actuator  38  compresses or releases the bulb  30  to pump ink toward the printhead or draw ink from the tank. 
     During long periods of standby, the pressure in the headspace  12  can rise above the bubble point pressure. Outgassing of dissolved gases, and diurnal temperature variation can cause pressure increases. In the worst case, the headspace  12  pressure is no longer negative relative to atmosphere. 
       FIG. 2  shows the printer coming out of standby and preparing for a print job. The piston  38  retracts in the chamber  40  to draw ink  46  out of the tank  8 . The ink displacement lowers the air pressure in the headspace  12  until the bubble point regulator  10  allows air into the tank  8 . With the headspace at the bubble point pressure, the negative hydrostatic pressure of the ink is within the expected operating range required by the printhead  2 . 
       FIG. 3  shows the priming or purging of the printhead  2  in preparation for printing. The valve  18  is reconfigured to close fluid communication between the pump  30  and the tank  8 , and open fluid communication between the pump  30  and the printhead  2 . The ink in the pump is forced out of the chamber  40  by depressing the piston  38 . The ink is forced through the filter  32  to remove any particulate contaminants shed by the pump. To prime the printhead  2 , ink is forced into the main channels of the ink distribution manifold  4  and from there, capillary action primes the small conduits and the nozzles in each of the printhead ICs  6 . This is done with the shut off valve  26  in the downstream line  24  open so that any excess ink feeds straight to the sump  28 . 
     If the printhead  2  contains ink when it is brought out of standby, it may be necessary to remove air bubbles or mixed ink. The problem of ink mixing is discussed in detail in the cross referenced application U.S. Ser. No. 11/688,863 filed Mar. 21, 2007, listed above. Put briefly, the ink from nozzles of one color can wick across the surface of the printhead ICs  6 , and diffuse into ink in the nozzles and supply lines for another color. This is corrected with a printhead purge. The downstream shutoff valve  26  is closed and filtered ink from the pump  30  is forced through the distribution manifold  4  to flood the printhead ICs  6 . The maintenance station  22  cleans away the flooded ink. 
       FIG. 4  shows the printer in printing mode. The three-way valve  18  is configured to fluidly connect the tank  8  to the printhead  2 . The blind end  44  seals off the branch line  36  to the pump  30 . The ejection of ink from the nozzles on the printhead ICs  6  draws ink from the ink tank  8 . The upstream ink line  20  is not constricted by the filter  32  or any of the structural elements of the pump  30 . In the embodiment shown in U.S. Ser. No. 11/688,873, filed on Mar. 21, 2007, the printhead  2  is a pagewidth printhead that prints full color at photographic quality resolution at a rate greater than one page per second. This requires a high ink supply flow rate which is not throttled by unnecessary elements in the upstream ink line  20 . 
     At the completion of the print job, the printer can return to standby mode as shown in  FIG. 1 . The valve  18  moves the blind end  44  over the upstream ink line  20  to seal the printhead  2  from the tank  8 . This prevents any ink mixing at the printhead from reaching the ink tank. Ink contamination in the tank would be irretrievable and has to be replaced. As a further safeguard against color mixing, the shut off valve  26  is held open during standby. The sump  28  is at a lower elevation relative to the printhead ICs  6 . This allows the column of ink in the downstream ink line  24  to ‘hang’ from the distribution manifold  4  to create a negative hydrostatic pressure at the printhead ICs  6 . A negative pressure at the nozzles draws the ink meniscus inwards and inhibits color mixing. 
     The maintenance station  22  that seals the nozzles during standby periods to avoid dehydration of the printhead ICs  6  and shield the nozzle plate from paper dust and other particulates. The maintenance station  22  is also configured to wipe the nozzle plate to remove dried ink and other contaminants. Dehydration of the printhead ICs  6  occurs when the ink solvent, typically water, evaporates and increases the viscosity of the ink. If the ink viscosity is too high, the ink ejection actuators fail to eject ink drops. Dehydrated nozzles are typically a problem when reactivating the printer after a power down or standby period. 
     The problems outlined above are not uncommon during the operative life of a printer and can be effectively corrected with the relatively simple fluidic architecture shown in the figures. It also allows the user to initially prime the printer, deprime the printer prior to moving it, or restore the printer to a known print ready state using simple trouble-shooting protocols. Several examples of these situations are described in detail in the above referenced U.S. Ser. No. 11/677,049 filed on Feb. 21, 2007. 
     The invention has been described by way of example only. Ordinary workers in this field will readily recognize any variations and modifications which do not depart from the spirit and scope of the broad inventive concept.