Abstract:
A hardcopy printing mechanism and a greeting card feeder retrofit kit therefor, along with a retrofitting method are provided for printing images on a first-sized media, and on both surfaces a second-sized greeting card media without removing the first-sized media from its normal supply tray. The hardcopy device may be an electrophotographic or inkjet printer preferably equipped with a duplexer module which inverts media from a printed first surface to an opposing second surface for printing an image thereon. For a printer having an alignment surface, and a width adjuster to push the first-sized media against the alignment surface, the greeting card feeder includes a biasing member which pushes the card stock against the alignment surface. The retrofit kit includes a supply of pre-scored greeting card stock and a software program with a group of greeting card images for a consumer to select from to print store-bought quality greeting cards.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This is a continuation of application Ser. No. 09/560,426 filed on Apr. 28, 2000, now U.S. Pat. No. 6,364,553, which is hereby incorporated by reference herein. 
    
    
     FIELD OF THE INVENTION 
     The present invention relates generally to hardcopy devices which advance media through a printzone for printing, such as electrophotographic printers or as illustrated herein, inkjet printing mechanisms. More particularly, the present invention relates to a greeting card feeder module which may be used in conjunction with a duplexing printing mechanism to easily print greeting cards which are comparable with store-bought greeting cards. 
     BACKGROUND OF THE INVENTION 
     The term “hardcopy device” includes a variety of printers and plotters, including those using inkjet and electrophotographic technologies to apply an image to a hardcopy medium, such as paper, transparencies, fabrics, foils and the like. Inkjet printing mechanisms print images using a colorant, referred to generally herein as “ink.” These inkjet printing mechanisms use inkjet cartridges, often called “pens,” to shoot drops of ink onto a page or sheet of print media. Some inkjet print mechanisms carry an ink cartridge with a full supply of ink back and forth across the sheet. Other inkjet print mechanisms, known as “off-axis” systems, propel only a small ink supply with the printhead carriage across the printzone, and store the main ink supply in a stationary reservoir, which is located “off-axis” from the path of printhead travel. Typically, a flexible conduit or tubing is used to convey the ink from the off-axis main reservoir to the printhead cartridge. In multi-color cartridges, several printheads and reservoirs are combined into a single unit, with each reservoir/printhead combination for a given color also being referred to herein as a “pen.” As the inkjet industry investigates new printhead designs, one trend is toward using a “snapper” reservoir system where permanent or semi-permanent printheads are used and a reservoir carrying a fresh ink supply is snapped into place on the printhead. 
     Each pen has a printhead formed with very small nozzles through which the ink drops are fired. The particular ink ejection mechanism within the printhead may take on a variety of different forms known to those skilled in the art, such as those using piezo-electric or thermal printhead technology. For instance, two earlier thermal ink ejection mechanisms are shown in U.S. Pat. Nos. 5,278,584 and 4,683,481, both assigned to the present assignee, the Hewlett-Packard Company. In a thermal system, a barrier layer containing ink channels and vaporization chambers is located between a nozzle orifice plate and a substrate layer. This substrate layer typically contains linear arrays of heater elements, such as resistors, which are energized to heat ink within the vaporization chambers. Upon heating, an ink droplet is ejected from a nozzle associated with the energized resistor. 
     To print an image, the printhead is propelled through a printzone back and forth across the page, ejecting drops of ink in a desired pattern as it moves. By selectively energizing the resistors as the printhead moves across the page, the ink is expelled in a pattern on the print media to form a desired image (e.g., picture, chart or text). The nozzles are typically arranged in linear arrays usually located side-by-side on the printhead, parallel to one another, and perpendicular to the scanning direction of the printhead, with the length of the nozzle arrays defining a print swath or band. That is, if all the nozzles of one array were continually fired as the printhead made one complete traverse through the printzone, a band or swath of ink would appear on the sheet. The width of this band is known as the “swath height” of the pen, the maximum pattern of ink which can be laid down in a single pass. The print media, such as a sheet of paper, is moved through the printzone typically one swath width at a time, although some print schemes move the media incrementally by, for instance, halves or quarters of a swath width for each printhead pass to obtain a shingled drop placement which enhances the appearance of the final image. 
     Whether the printing mechanism uses either a snapper cartridge system, an off-axis system, a replaceable cartridge system or some other inkjet system, drop placement on the media must be coordinated with the incremental advance of the media through the printzone for sharp, vivid images and text, which are free of print defects, such as color banding, improper spacing, and printed line overlapping. Many types of inkjet printing mechanisms use a series of conventional paper drive rollers or tires to frictionally engage the print media and incrementally advance the media through the printzone, moving either a full or fractional swath width. 
     One such media advancing system is described in U.S. Pat. No. 5,838,338, currently assigned to the Hewlett-Packard Company. One inkjet printer, specifically the DeskJet® 970 model color inkjet printer sold by the Hewlett-Packard Company, has a duplexer unit. Other printers, such as the DeskJet® 930 and 950 models of color inkjet printers, also sold by the Hewlett-Packard Company, may be used in conjunction with an optional duplexing module sold by the Hewlett-Packard Company as the Automatic Two-Sided Printing Module, stock no. C6463A. As the home computer market grows, as well as business applications, consumers have a desire to print greeting cards on their own printers, and as print quality advances increase, current inkjet printers have the ability to produce greeting cards which are of a quality comparable to a store bought greeting card. Additionally, with the increasing popularity of the Internet and electronic commerce, there are many websites which offer a variety of greeting card designs that consumers can download and print. For example, one such website may be located at www.printablecards.com. Indeed, in the future stores may even offer greeting card media in pre-cut sizes, such as 7×10 inch sheets which could be pre-scored to easily fold into a 5×7 inch greeting card. 
     Unfortunately, even with the ready availability of both pre-cut media and greeting card designs on the Internet and other software programs, most people still do not print their own greeting cards because of the complexity of the process, particularly when using currently available inkjet printers. Most consumers typically print on letter size media and only occasionally wish to print a greeting card, such as for holidays, birthdays and the like. For example, using a Microsoft Windows® based operating system on a home computer, printing a greeting card is a complicated lengthy process both in terms of physical hardware changes that need to be made to the printer, as well as software manipulation. 
     For example, FIGS. 5A and 5B together form a flow chart illustrating a prior art greeting card printing method. Since the drawings are labeled  5 A and  5 B, we will begin our discussion of this method with the letter C for the first step. Assuming an inkjet printer has been being used in a normal fashion for printing on letter-sized (8½×11 inch), in a removing step C, the user must first remove this normal sized paper (or other media) from the input tray and find a place to put the stack, which for some users with a slightly a cluttered work area may be a difficult task in itself. Then in a loading step D, the greeting card media is loaded into the input tray of the printer. Then in a width adjusting step E, the media width adjuster must be moved to snuggly press the stack against the side of the input tray. Then in a length adjusting step F, the media length adjuster must then be moved to snuggly press the greeting card stack back toward the media picking and feed mechanism. 
     Now the greeting card media has been loaded into the printer, the method continues with a software running step G, where the user then begins to run a particular greeting card software application. As mentioned above, this software application might be something which the user purchased, or it may be a design downloaded from the Internet or something custom created by the user using word processing or graphics programs. Then in a selecting step H, the user selects which greeting card to print. Then to begin the printing process, in an illustrated Microsoft Windows® brand based software application, in a selecting step I, the user must first select the “File” menu and then select the “page set-up” option. In another selecting step J, in the “page set-up” pop-up window, the user must then select the greeting card media size option, here illustrated as 7×10 inches. In another selecting step K in the “page set-up” pop-up window, the user must then select two-sided printing so a picture image or other text appears on the front of the finished card, and a greeting appears on the inside of a card. Then in another selecting step L, having selected the media size in step J and duplex printing in step K, the user must then select the “ok” feature on the “page set-up” pop-up window to close this window and continue the operation. 
     In a further selecting step M, the user must then again enter the file menu and then select the option “print.” Now transitioning from FIG. 5A to FIG. 5B, at the top we see another selecting step N, where under the print pop-up screen, the user must now select the properties option which generates another pop-up screen having several different layers of selection based upon the particular type of printer being used. Then in another selecting step, the user must select the “features” tab to bring the variety of features available into view. In a further selecting step P on the features screen, a user must select two-sided printing. Following this selection of two-sided printing, in a selecting step Q, the user must indicate that two-sided printing is desired by activating the “ok” feature to close the properties window. In a further selecting step R, the user must then select “ok” to close the print screen and initiate printing of the greeting card. Of course between steps Q and R, a user might also wish to select the number of copies of the card they would like to print if more than one card was desired. 
     Finally, in a printing step S, the printer finally prints the greeting card, performing the required duplexing operation to print on both the inside and outside of the card after which, the card is deposited by the printer in the output tray. Having completed this tortuous process to this point, the user must then return the printer to the normal operating state for, in this example, printing on letter-sized paper. In a moving step T, the user moves the media width adjuster on the printer to the far left position to begin to release the greeting card media. In another moving step U, the media length adjusters moved to the fully extended or “out” position so the remaining blank greeting card media can be removed from the input tray of the printer. It is apparent some users may wish to reverse steps T and U. Having removed the greeting card media from the input tray, in a loading step V, the normal sized paper or other media is returned to the input tray. After the media has been loaded, in an adjusting step W, the media width adjuster must be moved against the normal size media to push it tightly against the side of the input tray. Finally, in a length adjusting step X, the media length adjuster is pushed toward the rear of the printer, to move the media stack into engagement with the media picking and feed mechanisms to leave the printer ready for a normal print job. 
     In reviewing this earlier printing routine required to change from a normal printing mode to printing a greeting card and then return the printer to the normal state, nearly every letter of the alphabet has been used. Indeed, steps I and M really include two steps, one of selecting the file menu and the other then selecting which option is required under the file menu. Furthermore, between steps U and V an additional step could have been added for the process of unloading the greeting card media. Moreover, if the printer was not capable of automatic duplex printing, while steps K and P could be eliminated after a user printed one side of the greeting card in step S, the card would still need to be placed back in the top of the input tray media stack to allow printing on the other side of the card by repeating the remainder of the steps D through S, before moving on with steps T through the end to return the printer to normal sized media. Effectively, without the ability to print with an automatic duplexer, the method nearly doubles in length. This system is just far to complicated for the majority of simple users who wish to quickly print a greeting card and continue on with other tasks in their day. Moreover, since most users only occasionally print greeting cards and this is not a daily occurrence they must remember all of these steps in order to successfully print a greeting card without unnecessarily wasting media where several months may go by between uses, for instance, between Christmas and Valentine&#39;s Day, between Valentine&#39;s Day and Easter, and then perhaps between Easter and the following Christmas. Unfortunately, the only clear memory a user may have of the last time they tried printing a greeting card is that it was just too complicated and troublesome, leaving them to conclude it would be far easier just to go to the store and buy a card. 
     Thus, a need exists for a simple uncomplicated way for users to print greeting cards which is quick and easy to repeat, with minimal interruption of normal printing. 
     SUMMARY OF THE INVENTION 
     According to one aspect of the present invention, a hardcopy printing mechanism is provided for printing images on a first-sized media and on opposing first and second surfaces a second-sized media. The printing mechanism includes a frame defining a printzone, and an image generator which selectively applies a colorant to a presented surface of media when in the printzone. A movement mechanism selectively presents a surface of media into the printzone, and an inverting mechanism selectively inverts media from the first surface to the second surface for presentation into the printzone. A first supply device stores a supply of the first-sized media for selection by the movement mechanism. A second supply device receives a sheet of the second-sized media for selection by the movement mechanism while the supply of said first-sized media remains stored in the first supply device. The movement mechanism first presents the first surface of the second-sized media to the image generator, after which the inverting mechanism inverts said second-sized media and said movement mechanism presents the second surface of the second-sized media to the image generator. 
     In an illustrated embodiment, the image generator is an inkjet printhead, the inverting mechanism is a duplexer unit, the first supply device is an input tray, and the second-sized media is greeting card stock. The second supply device comprises an output tray defining a slot therein for receiving greeting card stock. 
     According to another aspect of the present invention, a retrofit kit is provided for modifying a hardcopy printing mechanism having a frame, an input tray for storing a supply of a first-sized media, a duplexer unit for inverting media, a controller responsive to input signals to print images, and an output tray for receiving printed sheets of media. The retrofit kit includes a replacement tray which replaces the output tray after removal from the frame. The replacement tray defines an input slot sized to receive a second-sized media while the first-sized media remains in the input tray. The retrofit kit also includes a storage medium storing an operating program and a selection of images which generate input signals for the controller in response to selection of an image. 
     According to another aspect of the present invention, a method is provided of retrofitting a hardcopy printing mechanism having a frame, an input tray for storing a supply of a first-sized media, a duplexer unit for inverting media, a controller responsive to input signals to print images, and an output tray for receiving printed sheets of media. The method includes the step of removing the output tray from the frame. In an installing step, a replacement tray is installed in the frame. The replacement frame defines an input slot which is sized to receive a second-sized media. The method also has a loading step where an operating program is uploaded, with this operating program including a selection of images which generate input signals for the controller in response to selection of an image. 
     An overall goal of the present invention is to provide a hardcopy device with a greeting card feeder module and operating system which is easy to use. 
     Another goal of the present invention is to provide a hardcopy device with a greeting card feeder module and operating system which reliably produces clear crisp images. 
     A further goal of the present invention is to provide a retrofit kit, including hardware, software, and optionally a sample supply of greeting card stock, which allows consumers, who have previously purchased a printer without a greeting card feeder module, the option of retrofitting their printer with a new greeting card feeder module and associated software. 
     An additional goal of the present invention is to provide a hardcopy device with a greeting card feeder module and operating system which allows a user to quickly switch between their normal print media, such as letter-sized paper, and specialty sized print stock, such as greeting card stock. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a, partially schematic, fragmented, perspective view of one form of a hardcopy printing device, here an inkjet printer having a duplexer device, and including one form of a greeting card feeder module and operating system of the present invention for printing on specialty-sized print media, and in particular, on greeting card stock. 
     FIG. 2 is an enlarged perspective view of the greeting card feeder module of FIG. 1, shown removed from the printer. 
     FIG. 3 is a fragmented, enlarged top plan view of the greeting card feeder module of FIG. 1, showing one form of a biasing device for pushing greeting card media toward the side of the module. 
     FIG. 4 is a flow chart illustrating one form of a greeting card feeder operating system of the present invention which may be used in the printer of FIG.  1 . 
     FIGS. 5A and 5B are two portions of a flow chart illustrating a commonly used, cumbersome, prior art manner of printing greeting cards. 
     FIG. 6 is a schematic diagram of one form of a printer retrofit kit for retrofitting an earlier printer with the greeting card feeder module of FIGS.  2  and  3 . 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     FIG. 1 illustrates an embodiment of a hardcopy device, here shown as an inkjet printing mechanism, and in particular, an inkjet printer  20 , constructed in accordance with the present invention, which may be used for printing for business reports, correspondence, desktop publishing, and in particular, for printing greeting cards, in an industrial, office, home or other environment. A variety of inkjet printing mechanisms are commercially available, although some of the more important advantages of the printer  20  may be appreciated best by people printing in a typical home environment. While it is apparent that the printer components may vary from model to model, the typical inkjet printer  20  includes a chassis  22  surrounded by a housing, casing or enclosure  24 , typically of a plastic material. Sheets of print media are fed through a printzone  25  by a print media handling system  26  using a series of internal conventional media drive rollers (not shown). The print media may be any type of suitable sheet material, such as paper, transparencies, mylar, and the like, but for convenience, the normal print mode is illustrated using plain paper, such as letter-sized paper, as the normal print medium. After printing, a sheet exiting the printzone  25  is propelled onto a pair of retractable output drying wing members, such as wing  28 . The pair of wings  28  momentarily hold a newly printed sheet above any previously printed sheets still drying in an output tray  30  before retracting to the sides to drop the newly printed sheet into the output tray. 
     The printer  20  also has a printer controller, illustrated schematically as a microprocessor  32 , that receives instructions from a host device, typically a computer, such as a personal computer (not shown). Indeed, many of the printer controller functions may be performed by the host computer, by the electronics on board the printer, or by interactions therebetween. As used herein, the term “printer controller  32 ” encompasses these functions, whether performed by the host computer, the printer, an intermediary device therebetween, or by a combined interaction of such elements. The printer controller  32  may also operate in response to user inputs provided through a key pad  34  located on the exterior of the casing  24 . A monitor coupled to the computer host may be used to display visual information to an operator, such as the printer status or a particular program being run on the host computer. Personal computers, their input devices, such as a keyboard and/or a mouse device, and monitors are all well known to those skilled in the art. 
     One or more inkjet cartridges, here illustrated as a black ink cartridge  35  and a color ink cartridge  36 , may be slideably supported in a conventional manner by a carriage mechanism (not shown) for reciprocating travel back and forth across the printzone  25  for printing, and into a servicing region  38  for printhead maintenance and storage. The cartridges  35  and  36  are often called “pens” by those in the art. The printer  20  has a cartridge drive mechanism, such as a DC motor and drive gear assembly (not shown) coupled to drive the pens  35 ,  36  in this reciprocating fashion in response to control signals received from the controller  32 . A conventional optical encoder device (not shown) may be used to provide the controller  32  with feedback information as to the position of the pens over the printzone  25 . The illustrated color pen  36  is a tri-color pen, although in some embodiments, several discrete monochrome pens may be used. While the color pen  36  may contain a pigment based ink, for the purposes of illustration, pen  36  is described as containing three dye based ink colors, such as cyan, yellow and magenta. The black ink pen  35  is illustrated herein as containing a pigment based ink. It is apparent that other types of inks may also be used in pens  35 ,  36 , such as paraffin based inks, as well as hybrid or composite inks having both dye and pigment characteristics. 
     The illustrated pens  35 ,  36  each have bodies that define reservoirs for storing a supply of ink therein. The bodies of pens  35 ,  36  each support conventional printheads (not shown), with each printhead having an orifice plate with a plurality of nozzles formed therethrough in a manner well known to those skilled in the art. The illustrated embodiment uses thermal inkjet printheads, although other types of printheads may be used, such as piezoelectric printheads. The printheads  35 ,  36  typically include a plurality of resistors which are associated with the nozzles. Upon energizing a selected resistor, a bubble of gas is formed with the bubble ejecting a droplet of ink from the nozzle and onto a sheet of media in the printzone  25  under the nozzle. The printhead resistors are selectively energized in response to firing command control signals received from the controller  32 . The pens  35 ,  36  are illustrated as replaceable inkjet cartridges, which when emptied are removed and replaced with fresh cartridges each having new printheads. Thus, the illustrated printer  20  may be considered as a “replaceable cartridge” inkjet printer. 
     The illustrated printer  20  is fitted with a removable duplexer module  40 , which provides for automatic auto-duplexing, that is, two-sided printing so an image may be applied to both sides of a sheet of media. Such a duplexer module, mentioned in the Background section above, is commercially available from the Hewlett-Packard Company as the Automatic Two- Sided Printing Module, stock no. C6463A, which may be used in conjunction with the DeskJet® 930 and 950 models of color inkjet printers. The Hewlett-Packard Company also offers the DeskJet® 970 model color inkjet printer which comes with this duplexer unit model installed. Thus, in the illustrated embodiment, the duplexer unit  40  serves as a portion of the media handling system  26 . Another portion of the media handling system  26  is the media input tray  42 , which is shown in FIG. 1 as holding a stack of letter-sized paper  44 . In the illustrated embodiment, the media tray  42  is designed as a drawer-type tray slidably supported between two fixed side panels  45  extending outwardly from a main body portion of the casing  24 . Preferably, the input tray drawer  42  slides outwardly in the positive Y-axis direction to allow for ease of loading the media  44  in the tray. In referring to the background section above, the stack of paper  44  and the input tray  42  comprises the “normal” type of media which most users typically employ. Either before the input tray  42  is pushed back into the printing position shown in FIG. 1, a media length adjuster  46  and a media width adjuster  48  are pushed into contact with the stack  44  to hold the sheets firmly in a proper position for picking by the media drive rollers (not shown). In the illustrated embodiment, the length adjuster  46  pushes the media stack  44  in a negative Y-axis direction, and into engagement with the media picking mechanism, where as the width adjuster  48  pushes the stack into the negative X direction which serves to present the sheets to the pick rollers in an aligned, non-skewed fashion. 
     FIG. 1 shows the printer  20  equipped with one form of a greeting card feeder module  50 , constructed in accordance with an embodiment of the present invention. The greeting card feeder module  50  includes a fixed portion  52  and a pivoting portion  54  which is pivotally attached to the fixed portion  52  by a pair of hinges, such as hinge  55 . The hinge  55  allows the pivoting portion  54  to rotate upwardly to provide easier access to the media input tray  42 . To temporarily hold the pivoting portion  54  above the media stack  44 , one or both of the side panels  45  may have a door stop feature  56  which holds the pivoting portion  54  at an angled orientation to free a user&#39;s hands to adjust the media stack  44  and adjusters  46 ,  48 . Preferably, the door stop  56  is sized and positioned, in combination the features of the greeting card feeder module  50  to allow gentle hand pressure to move the pivoting portion  54  over the stop  56  when moving between the elevated and loading position and the lowered printing position. Together, the fixed portion  52  and the pivoting portion  54  of the greeting card feeder module  50  define the output tray portion  30  of printer  20 . The input tray  42  is designed to hold a variety of different sizes of media, from 3×5 inches up to legal sized 8½×14 inch paper, or continuously fed Z-fold or banner type paper, including a stack of envelopes. However, some users may prefer the convenience of being able to feed a single envelope through the printzone  25  without having to remove the normal media  44 . Thus, the fixed portion  52  of the greeting card feeder module  50  may be formed to define a manual envelope feed slot  58 . 
     The pivoting portion  54  of the greeting card feeder module  50  defines a greeting card stock feed slot  60 , shown in FIG. 1 with a standard sized piece of greeting card stock  62  inserted therein ready for printing. FIGS. 2 and 3 illustrate other features of the greeting card feeder module  50 . For ease of compatibility with current printer designs, the fixed portion  52  of the module  50  may be of the same construction as current output tray designs, for instance, including a pair of extending side rails, such as side rail  64  which has a pair of snap fit members  66  extending downwardly therefrom for receipt by a pair of mating features such as features  68  formed within the inner portions of the fixed side panels  45  (see FIG. 1) other conventional assembly features of the fixed tray portion  52  may include a rear wall  70 , and alignment features  72  and  74  which are used to positively receive the module  50  within the printer chassis  22  and align the module with other portions of the media handling system including the input or pick rollers and the media output rollers (not shown). As shown in FIG. 2, preferably the fixed portion  52  of the module has an extending platform portion  75  which extends beyond the hinges  55  to lie under a portion of the pivoting tray portion  54 . One useful feature for this extending ledge  75  is that it makes it more difficult for a user to get their fingers, clothing, jewelry or other items caught or tangled in the internal moving portions of the printer, namely, the media pick and feed rollers (not shown). To aid a user in understanding intuitively that the pivoting portion  54  of the module  50  does indeed pivot in an upward direction, preferably a rounded front portion  76  of plate  54  is embossed or molded with a textured gripping region  77 . Other embossed or molded tactile indicators are shown on the duplexer  40  in FIG. 1, including a pair of depressible installation/uninstallation buttons located to each side of the duplexer, such as button  78 , and a jam-clearing door button  79 . When button  79  is depressed, the top and rear portions of the duplexer casing are hinged to open and allow access to the internal rollers of the duplexer to allow easy removal of any jammed media. 
     FIG. 3 illustrates another important feature of the greeting card feeder  50 , which is a width biasing member or push arm  80 . In the illustrated example, the push arm  80  is pivotally attached to an undersurface  83  of the ledge portion  75  (see FIG.  2 ). The push arm  80  is biased away from a mounting feature  84  extending downwardly from the ledge undersurface  83  by a biasing member, such as a compression spring  85 . The spring  85  serves to push arm  80  into engagement with the free side edge of the sheet of greeting card stock  62 , as shown in FIG.  3 . Since all commercial greeting cards are not cut exactly to a nominal width, here illustrated as 7 inches in width and 10 inches in length, this push arm width adjuster  80  advantageously serves to align the opposite edge of the card stock tightly against an alignment edge  86  of the input slot  60 . Thus, use of the biasing arm  80  advantageously allows the greeting card feeder  50  to easily compensate for slight variations and differences in the widths of particular greeting card media which typically fall within commercial cut tolerances. Before leaving our discussion of the push arm  80 , it is noted that a variety of other biasing mechanisms other than a coil compression spring  85  may be used to push the arm  80  into engagement with a sheet of greeting card stock  62 . For instance, rather than a coil spring, a leaf spring may be used, or a torsional spring member wrapped around the mounting post  82 , as well as tensioning springs which would pull the arm  80  into contact with the edge of the card stock  62 . 
     Another useful feature of the pivoting plate  54  of the feeder  50  is a beveled ramp portion  88  which assists the user in guiding a sheet of card stock  62  into the feed slot  60 . As for how far back, that is in the negative Y direction, as user must insert a sheet of cardstock  62 , most users soon develop an intuitive feel or understanding that a sheet of media must be pushed rearwardly into engagement with the pick rollers, since this is the standard practice when loading a normal stack of media  44  in the regular input tray  42 , as well as when feeding an envelope through the manual feed slot  58 . Thus, given that the feeder module  50  is designed for single sheet manual feeding, it is believed that a user&#39;s hand serves this rearward biasing function just as well if not better than any mechanical biasing member. 
     FIG. 4 is a flowchart  90  illustrating one form of a greeting card feeder operating system, operated in accordance with the present invention using the greeting card feeder module  50 , as assembled in printer  20  with the auto-duplexer unit  40  installed. In a loading step  92 , a sheet of card stock  62  is loaded by hand into the feed slot  60  of the feeder module  50 . During this loading process, the push arm  80  under the urging force of spring  85  automatically guides the card stock  62  into engagement with the right edge  86  of feed slot  60 , as shown in FIG.  3 . Most users intuitively know to push the card stock  62  all the way toward the rear of the printer, until the rearward most edge of sheet  62  encounters the media pick mechanism (not shown). Now the media is ready in the feeder  50 , in a running step  94  the user runs the desired greeting card software application which, is discussed in the background section above, may be an application already loaded on a user&#39;s computer, or one accessible from the internet or other networking mechanisms. Once the software is up and running, in a selecting step  96 , a user then selects which greeting card to print on the loaded sheet of media  62 . Then in another selecting step  98 , a user selects a print button feature on a software operating system which may accompany the greeting card feeder module, or another print feature, such as that which accompanies most word processing systems. Following the selecting step  98 , the printer  20  then picks the sheet of media  62  from the feeder module  50  and in a printing step  100  prints first one side of a card, followed by the duplexer module  40  inverting the card stock to allow the printer to print on the other side of the card. Preferably to improve throughput, which is a term used to define the speed of printing typically measured in pages per minute, the side of the card having the shortest drying time is printed first. Most often the inside of the card has the shortest drying time because it typically has a text message, while the outside of the card usually has a more graphic design, so for most cards the inside message may be printed first. Following this printing, the freshly made greeting card is then delivered into the printer output tray  30 , lying on top of the fixed base plate  52  and the pivoting plate  54 , in a location generally extending over the feed slot  60 . 
     FIG. 6 is a schematic diagram illustrating one manner of providing the greeting card feeder module  50 , along with associated components, to consumers as a retrofit kit  101  constructed in accordance with the present invention. In the illustrated example, the greeting card feeder module  50  and a software media storage device, such as a CD ROM disk  102 , and a stack of greeting card media  104  are packaged together, as illustrated schematically by the curved arrows  105 ,  106  and  108 , respectively, into a package or other carton, such as box  110 . Note from the schematic nature of FIG. 6, the packaging  110  is shown in reduced size. When the greeting card feeder module  50 , the software carrying CD ROM  102 , and the stack of greeting card stock  104  are packaged within carton  110 , as indicated by the flow arrow  112 , when the carton is closed the result is a kit  101  containing these components. Other items may be included in the kit, such as written directions describing how to remove an existing media output and replaced it with the greeting card feeder module  50 . However, many of today users would prefer to have these retrofitting directions included in the software supplied on the CD ROM  102 . The installation instructions may be written directions, in the form of pictures, or more preferably shown as a video clip illustrating how the existing media output tray is removed, and assuring users that if any breakage of the old tray occurs during disassembly, the main concern should be to remove all of the pieces of the tray, because the new greeting card feeder module  50  will serve as a total replacement for their original output tray. 
     Conclusion 
     Thus, the new method capable of using the greeting card feeder  50  in conjunction with the duplexer unit  40  advantageously reduces the number of steps a user is required to employ to print a greeting card. For example, from the nearly 20 steps described in the background section with regard to the flowchart of FIGS. 5A and 5B, a user now performs five steps to print a greeting card. Granted, the running step  94  and the selecting step  96  are similar to steps G and H in the prior system, and step  100  is similar to step S, but the remaining two steps  92  and  98  are vast simplification over the methods which users had to employ previously to print greeting cards. Indeed, none of the earlier greeting card software applications had any manner for receiving an input from a user to indicate that a printer had auto-duplexing capability, such as that provided by the duplexer module  40 . Thus, greeting cards printed from these earlier software applications were first printed usually on the exterior of the card, after which a user had to manually invert the sheet and reload it into the printer to print the inside of the card, further complicating the illustrated prior art operating system of FIGS. 5A and 5B. Indeed, some of these earlier software applications were not even designed to handle the special sized greeting card media, requiring a couple of extra steps to be inserted between the selecting steps P and Q. For instance, an additional selection might be required to reduce the greeting card content to fit a smaller area, such as the area of ¼ of a letter-sized sheet which, through careful folding and single sided printing could be fashioned into a homemade greeting card. Unfortunately these earlier greeting card software applications designed for letter-sized paper were limited to producing a greeting card which was only the size of a typical party invitation or thank-you note, but not the larger size of a typical birthday card or holiday greeting card. Furthermore, the letter-sized plain paper media was typically too flimsy and easily wrinkled, not leading to any type of a durable greeting card comparable to those available in the stores. Another advantage of the present invention is the provision of the retrofit kit  101  of FIG. 6, which allows purchasers of earlier printers to upgrade and retrofit these printers with the greeting card feeder module  50 , as well as being able to load the greeting card maker program stored on the CD ROM disk  102 , for example, to upgrade their computer operating system. 
     Using the illustrated greeting card feeder operating system  90 , the number of steps required to successfully print a homemade greeting card having store bought type quality are drastically reduced. While some users may lament the loss of the capability to print many different sizes of greeting cards using the feeder module  50 , the simplicity offered by this system is believed to be far more advantageous for the majority of users. Moreover, by eliminating the need to reconfigure the normal media input tray  42  to accommodate specially sized greeting card stock  62 , the speed with which a greeting card can be printed is drastically increased. The quickness with which a commercial quality greeting card can be printed using the method of flowchart  90  and the card feeder module  50  in conjunction with duplexer  40  is a significant advantage for many users who perhaps at the last minute realize they have forgotten an important birthday or other event and don&#39;t have time to go to a store and shop for a card. Furthermore, the ease of use of the feeder module  50  and operating method  90  are particularly advantageous for users which only infrequently need to print a card and may have difficulty remembering all of the steps illustrated in FIGS. 5A and 5B when many months intervene between uses. 
     Another trade-off in flexibility and features versus ease of use of method  90  and the feeder module  50  was the elimination of the ability to personalize a greeting card using method  90 . However, one of the main goals of the feeder module  50  and method  90  was to produce store bought quality greeting cards, and even store bought cards required a user to sign their name at a minimum or add other personal messages to the card by hand. In the future, the software could allow customization while adding only 1-2 steps above the simplest solution. Another trade-off made was the elimination of multiple media sizes for the card feeder. However, once again greeting card companies and stationery companies are tending to print more standard size cards to lower their media handling and purchasing costs. And finally, most people who receive a greeting card printed using the feeder module  50  and the method  90  are recipients of a gift, and they don&#39;t know what media sizes were available at the store or one&#39;s own home or office. 
     Thus, consumers now have a printing system which allows them to print store bought quality greeting cards at home or work using the new commercially available greeting card media using a reliable robust system which is not only fast but easy to use and which will no doubt save consumers money over purchasing store bought greeting cards.