Patent Publication Number: US-8528210-B2

Title: Universal magnet roller press apparatus, assembly, and method

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application claims the benefit of U.S. Provisional Patent Application Ser. No. 61/274,617, filed Aug. 18, 2009, which is incorporated herein by reference in its entirety, and also claims the benefit of U.S. Provisional Patent Application Ser. No. 61/283,254, filed Nov. 30, 2009, which is incorporated herein by reference in its entirety. 
    
    
     STATEMENT RE: FEDERALLY SPONSORED RESEARCH/DEVELOPMENT 
     (Not Applicable) 
     FIELD 
     The disclosure relates to electrophotography, particularly an apparatus and methods for remanufacturing toner printer cartridges. 
     BACKGROUND 
     Used printer cartridges of fax machines, copiers, inkjet printers, and laser printers are often remanufactured. Such printer cartridges typically include a toner hopper, a waste hopper, a primary charge roller, a magnet roller, and a drum. The magnet roller (“magnet roller” or “mag roller”) or magnet sleeve generally comprises a coated aluminum sleeve rotating around a stationary magnet. The magnet roller attracts toner which is held onto the sleeve by the inner magnet. The magnet roller is usually one of the components that wears out from usage and gets replaced during remanufacturing. It is desirable to be able to take apart the magnet roller in order to replace the magnet sleeve, re-use the inner magnet, and not damage the inner magnet or magnet roller hub. For purposes of this application, a magnet roller hub is a pressed-in retaining flange for the inner magnet. Known devices exist for taking apart magnet rollers but such known devices may not properly align the magnet roller in place and can damage the magnet roller hub and the inner magnet by excessive pushing on the magnet end of the magnet roller. 
     In addition, it is desirable to be able to re-use the inner magnet with a variety of magnet roller sizes and hub adaptors. Such known devices for taking apart magnet rollers do not provide for universal magnet roller adaptors. 
     Accordingly, there is a need for a universal magnet roller apparatus, assembly, and method that overcomes the issues of known devices. 
     SUMMARY 
     This need for a universal magnet roller apparatus, assembly, and method is satisfied. The disclosure provides for a universal magnet roller press apparatus and method that includes a screw drive assembly, a front support assembly, and a back support assembly; allows one to easily retain the magnet roller in a secure position where the inner magnet of the magnet roller can be easily pushed out or removed without damage to the inner magnet; allows for the proper alignment of a magnet roller when the magnet roller is disassembled and reassembled; and, allows for use of the magnet roller with a variety of universal magnet roller adaptors. 
     In one embodiment there is provided a universal magnet roller press apparatus for removing and installing a magnet and a hub of a magnet roller of a toner printer cartridge. The apparatus comprises a mounting base. The apparatus further comprises screw drive assembly attached to a first top end of the mounting base. The apparatus further comprises an alignment cradle attached to a top portion of the mounting base adjacent the screw drive assembly. The apparatus further comprises a front support assembly attached to the top portion of the mounting base adjacent the alignment cradle. The apparatus further comprises a back support assembly attached to a second top end of the mounting base and spaced apart from the front support assembly. The apparatus further comprises a first rod stop and a second rod stop attached to sides of the mounting base for adjusting a position of the back support assembly. 
     In another embodiment there is provided a universal magnet roller press assembly for removing and installing a magnet and a hub of a magnet roller of a toner printer cartridge. The assembly comprises a universal magnet roller press apparatus. The apparatus comprises a mounting base. The apparatus further comprises screw drive assembly attached to a first top end of the mounting base. The apparatus further comprises an alignment cradle attached to a top portion of the mounting base adjacent the screw drive assembly. The apparatus further comprises a front support assembly attached to the top portion of the mounting base adjacent the alignment cradle. The apparatus further comprises a back support assembly attached to a second top end of the mounting base and spaced apart from the front support assembly. The apparatus further comprises a first rod stop and a second rod stop attached to sides of the mounting base for adjusting a position of the back support assembly. The assembly further comprises one or more magnet roller adaptors for attachment to the magnet roller during removal and installation of the magnet and the hub. 
     In another embodiment there is provided a method for removing and installing a magnet and a hub of a magnet roller of a toner printer cartridge. The method comprises using a universal magnet roller assembly to remove the magnet and the hub from the magnet roller. The method further comprises using the universal magnet roller assembly to install the removed magnet and the removed hub into a replacement magnet sleeve to form a remanufactured magnet roller. 
     In another embodiment there is provided a method for remanufacturing a magnet roller of a toner printer cartridge. The method comprise providing a magnet roller having a first end, a second end, a hub attached at the first end, a magnet sleeve, and an inner magnet. The method further comprises coupling a first magnet roller adaptor to the first end of the magnet roller. The method further comprises providing a universal magnet roller press comprising a screw drive assembly having a revolving handle and a push rod, a front support assembly, and a back support assembly. The method further comprises positioning and aligning the magnet roller in the front support assembly and the back support assembly of the universal magnet roller press apparatus. The method further comprises using the screw drive assembly to push the inner magnet and the hub out of the magnet sleeve. The method further comprises removing the first magnet roller adaptor. The method further comprises discarding the magnet sleeve. The method further comprises inserting the removed inner magnet and the removed hub into a replacement magnet sleeve having a first end and a second end. The method further comprises coupling a second magnet roller adaptor to the first end of the replacement magnet sleeve and coupling a third magnet roller adaptor to the second end of the replacement magnet sleeve. The method further comprises positioning and aligning the replacement magnet sleeve in the front support assembly and the back support assembly of the universal magnet roller press apparatus. The method further comprises using the screw drive assembly to attach the removed inner magnet and the removed hub to the replacement magnet sleeve to form a remanufactured magnet roller. The method further comprises removing the second magnet roller adaptor and the third magnet roller adaptor from the remanufactured magnet roller. 
     In another embodiment there is provided a method for removing and installing a magnet and a hub of a magnet roller of a toner printer cartridge used in electrophotographic image forming devices. The method comprises removing a magnet and a hub from a magnet roller by positioning and aligning the magnet roller in a universal magnet roller press apparatus, actuating with a revolving handle a push rod of a screw drive assembly to push the magnet and the hub out of a magnet sleeve, and discarding the magnet sleeve. The method further comprises installing the removed magnet and the removed hub into a replacement magnet sleeve by inserting the removed magnet and the removed hub into the replacement magnet sleeve, positioning and aligning the removed magnet and the removed hub within the replacement magnet sleeve in the universal magnet roller press apparatus, and actuating with the revolving handle the push rod of the screw drive assembly to push the removed magnet and the removed hub into the replacement magnet sleeve so that the removed magnet and the removed hub attach to the replacement magnet sleeve. The method further comprises removing the attached magnet roller from the apparatus. 
     The features, functions, and advantages that have been discussed can be achieved independently in various embodiments of the disclosure or may be combined in yet other embodiments further details of which can be seen with reference to the following description and drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The disclosure can be better understood with reference to the following detailed description taken in conjunction with the accompanying drawings which illustrate preferred and exemplary embodiments, but which are not necessarily drawn to scale, wherein: 
         FIG. 1  is an illustration of a top, front right perspective view of one of the embodiments of the universal magnet roller press apparatus of the disclosure; 
         FIG. 2  is an illustration of an existing magnet roller that may be used with one of the embodiments of the universal magnet roller press apparatus, assembly, and method of the disclosure; 
         FIG. 3  is an illustration of a top, front left perspective view of one of the embodiments of the universal magnet roller press apparatus of the disclosure; 
         FIG. 4A  is an illustration of a top, back perspective view of one of the embodiments of the universal magnet roller press apparatus of the disclosure; 
         FIG. 4B  is an illustration of a right side perspective view of the universal magnet roller press apparatus of  FIG. 4A ; 
         FIG. 5  is an illustration of a perspective view in partial cross-section of an embodiment of a screw drive assembly of the universal magnet roller press apparatus of the disclosure; 
         FIG. 6  is an illustration of a side view in partial cross section of an embodiment of a screw drive assembly of the universal magnet roller press apparatus of the disclosure; 
         FIG. 7A  is an illustration of an exploded view of an embodiment of a front support assembly of the universal magnet roller press apparatus of the disclosure; 
         FIG. 7B  is an illustration of a perspective view of the assembled front support assembly of  FIG. 7A ; 
         FIG. 8A  is an illustration of an exploded view of an embodiment of a back support assembly of the universal magnet roller press apparatus of the disclosure; 
         FIG. 8B  is an illustration of a perspective view of the assembled back support assembly of  FIG. 8A ; 
         FIG. 9A  is an illustration of a side view of an embodiment of a back support assembly of the universal magnet roller press apparatus of the disclosure showing a first position and a second position; 
         FIG. 9B  is an illustration of a front right side perspective view of an embodiment of a back support assembly of the universal magnet roller press apparatus of the disclosure; 
         FIG. 10  is a top view of a magnet roller positioned for installation in one of the embodiments of the universal magnet roller press apparatus of the disclosure; 
         FIGS. 11A-11B  are illustrations of top cross-sectional views showing magnet and hub removal using embodiments of adaptors of the universal magnet roller press assembly of the disclosure; 
         FIGS. 12A-12B  are illustrations of top cross-sectional views showing magnet and hub installation using other embodiments of adaptors of the universal magnet roller press assembly of the disclosure; 
         FIGS. 13A-13B  are illustrations of top cross-sectional views showing magnet and hub removal using other embodiments of adaptors of the universal magnet roller press assembly of the disclosure; 
         FIG. 14A  is an illustration of a front perspective view of embodiments of adaptors for use with the universal magnet roller press apparatus of  FIG. 1 ; 
         FIG. 14B  is an illustration of a front view of the plurality of adaptors of  FIG. 14A ; 
         FIG. 15A-15I  are illustrations of embodiments of adaptors for use with the universal magnet roller press apparatus of  FIG. 1 ; 
         FIGS. 16A-16F  are illustrations showing magnet and hub removal using embodiments of adaptors of the universal magnet roller press assembly of the disclosure; 
         FIGS. 16G-16K  are illustrations showing magnet and hub installation using embodiments of adaptors of the universal magnet roller press assembly of the disclosure; 
         FIGS. 17A-17D  are illustrations of various views of another embodiment of a universal magnet roller press apparatus of the disclosure; 
         FIGS. 18A-18D  are illustrations of various views of an existing magnet roller that may be used with one of the embodiments of the universal magnet roller press apparatus, assembly, and method of the disclosure; 
         FIGS. 19A-19F ,  FIGS. 20A-20F ,  FIGS. 21A-21F , and  FIGS. 22A-22F  are illustrations of various views of adaptors for use with the universal magnet roller press apparatus of  FIGS. 17A-17D ; 
         FIG. 23  is an illustration of a flow diagram showing steps of an embodiment of a method for remanufacturing a magnet roller using one of the embodiments of the universal magnet roller press apparatus and assembly of the disclosure; and, 
         FIG. 24  is an illustration of a flow diagram showing steps of another embodiment of a method for remanufacturing a magnet roller using one of the embodiments of the universal magnet roller press apparatus and assembly of the disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     Disclosed embodiments will now be described more fully herein after with reference to the accompanying drawings, in which some, but not all disclosed embodiments are shown. Indeed, several different embodiments may be provided and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the scope of the disclosure to those skilled in the art. It is to be understood that other embodiments may be utilized and structural changes may be made without departing from the scope of the disclosure. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting. 
     The order in which the steps are presented below is not limited to any particular order and does not necessarily imply that they have to be performed in the order presented. It will be understood by those of ordinary skill in the art that the order of these steps can be rearranged and performed in any suitable manner. It will further be understood by those of ordinary skill in the art that some steps may be omitted or added and still fall within the spirit of the disclosure. 
       FIG. 1  is an illustration of a top, front right perspective view of one of the embodiments of a universal magnet (“mag”) roller press apparatus  100  of the disclosure.  FIG. 2  is an illustration of an existing magnet roller  102  that may be used with one of the embodiments of the universal magnet roller press apparatus  100 , assembly  101  (see  FIGS. 4A-4B ), and method  400  of the disclosure. 
     In one embodiment there is provided a universal magnet roller press apparatus  100  (see  FIG. 1 ) or  10  (see  FIG. 17A ) for removing and installing a magnet  110  (see  FIG. 2 ), preferably in the form of an inner magnet, and a hub  106  (see  FIG. 2 ), of a magnet roller  102  (see  FIG. 2 ) used with known toner printer cartridges (not shown). Referring to  FIG. 1 , the apparatus  100  comprises a mounting base  136  having end caps  138 . Preferably, the mounting base  136  is comprised of steel. However, the mounting base  136  may also be made of other suitable materials. The mounting base  136  further comprises one or more end pieces or legs  140 . Preferably, the mounting base  136  has two end pieces or legs  140 . Each end piece or leg  140  preferably has end caps  142  and preferably has one or more mounting holes  143 . When used, the apparatus  100  may preferably be mounted to a substantially flat surface (not shown) using one or more bolts  145  (see  FIG. 16E ) inserted through the mounting holes  143 . 
     The apparatus  100  further comprises screw drive assembly  150  attached to a first top end  198  of the mounting base  136 . As shown in  FIG. 1 , the screw drive assembly  150  comprises a housing cover  196  attached to the first top end  198  of the mounting base  136 . The housing cover  196  may preferably have one or more openings  197  for insertion of a lubricant (not shown) for lubricating internal parts of the screw drive assembly  150 . The openings  197  may be covered with removable plug elements  195 . 
     The apparatus  100  further comprises an alignment cradle or block  144  attached to a top portion  234  of the mounting base  136  adjacent the screw drive assembly  150 . The alignment cradle or block  144  may be comprised of felt, plastic, or another suitable material and is designed to cradle or hold the magnet roller  102  during the removal and installation process. 
     The apparatus  100  further comprises a front support assembly  200  attached to the top portion  234  of the mounting base  136  adjacent the alignment cradle or block  144 . The front support assembly  200  may be locked and unlocked with a locking clamp handle  236  attached to a latch plate  238  and a U-hook  239 . The latch plate  238  is attached to side  147  of the mounting base  136 . 
     The apparatus further comprises a back support assembly  240  attached to a second top end  242  of the mounting base  136  and spaced apart from the front support assembly  200 . The back support assembly  240  also includes a slide retainer bracket  264  attached to the back support assembly  240 . The slide retainer bracket  264  is used to keep the back support assembly  240  aligned and to keep the back support assembly  240  from coming off the mounting base  136  when the back support assembly  240  is moved between a first rod stop  146  and a second rod stop  148 . The apparatus  100  further comprises first rod stop  146  and a second rod stop  148  attached to sides  147  of the mounting base  136  for adjusting a position of the back support assembly  240 . The first rod stop  146  and the second rod stop  148  are preferably in parallel alignment and are preferably spaced apart from each other. The first rod stop  146  is designed to be used when a magnet roller having a shorter length is positioned in the apparatus  100 . The second rod stop  148  is designed to be used when a magnet roller having a longer length is positioned in the apparatus  100 . 
     The universal magnet roller press apparatus  100  may be used with any number of existing magnet rollers such as existing magnet roller  102  (see  FIG. 1 ). As shown in  FIG. 1 , the magnet roller  102  may be attached to magnet roller adaptor  194  at second end  108  (see  FIG. 2 ) and to magnet roller adaptor  116  at first end  104  (see  FIG. 2 ). As shown in  FIG. 2 , the magnet roller  102  has a first end  104  or non-drive end having a hub  106 . The magnet roller  102  has a second end  108  or drive end. The magnet roller  102  comprises a magnet  110  having a shaft  112 . The magnet roller  102  further comprises a magnet sleeve  114  that surrounds the shaft  112 . The apparatus  100 ,  10  is used to remanufacture magnet rollers by removing a magnet  110  and a hub  106  from a magnet roller  102 , preferably a worn magnet roller, and installing the magnet  110  and the hub  106  into a replacement sleeve  302  (see  FIG. 16G ) to form a remanufactured magnet roller  308  (see  FIG. 16G ). 
       FIG. 3  is an illustration of a top, front left perspective view of the universal magnet roller press apparatus  100  of the disclosure.  FIG. 3  shows the mounting base  136 , the alignment cradle or block  144 , the first rod stop  146 , the second rod stop  148 , the screw drive assembly  150 , the front support assembly  200 , and the back support assembly  240 . 
     In another embodiment there is provided a universal magnet roller press assembly  101  for removing and installing a magnet  110  and a hub  106  of a magnet roller  102  of a toner printer cartridge.  FIG. 4A  is an illustration of a top, back perspective view of one of the embodiments of the universal magnet roller press assembly  101  of the disclosure.  FIG. 4B  is an illustration of a right side perspective view of the universal magnet roller press assembly  101  of  FIG. 4A . The universal magnet roller press assembly  101  comprises the universal magnet roller press apparatus  100 , as discussed above. The apparatus  100  comprises a mounting base  136 . The apparatus  100  further comprises screw drive assembly  150  attached to a first top end  198  of the mounting base  136 . The apparatus  100  further comprises an alignment cradle  144  attached to a top portion  234  of the mounting base  136  adjacent the screw drive assembly  150 . The apparatus  100  further comprises a front support assembly  200  attached to the top portion  234  of the mounting base  136  adjacent the alignment cradle  144 . The apparatus  100  further comprises a back support assembly  240  attached to a second top end  242  of the mounting base  136  and spaced apart from the front support assembly  200 . The apparatus  100  further comprises a first rod stop  146  and a second rod stop  148  attached to sides  147  of the mounting base  136  for adjusting a position of the back support assembly  240 . As shown in  FIGS. 4A-4B , the apparatus  100  comprises the mounting base  136  with end cap  138 , end pieces or legs  140  with end caps  142 , the screw drive assembly  150 , the front support assembly  200 , and the back support assembly  240 , and the slide retainer bracket  264 . 
     The assembly  101  further comprises one or more magnet roller adaptors  116 ,  118 ,  120 ,  122 ,  124 ,  126 ,  128 ,  132 , and  194  for use with and attachment to the magnet roller  102  (see  FIG. 2 ) during removal and installation of the magnet  110  and the hub  106 .  FIG. 15A-15I  are illustrations of embodiments of magnet roller adaptors  116 ,  118 ,  120 ,  122 ,  124 ,  126 ,  128 ,  132 , and  194  for use in the universal magnet roller press assembly  101  of  FIG. 4A  and for use with the universal magnet roller press apparatus  100  of  FIG. 1 .  FIG. 14A  is an illustration of a front perspective view of embodiments of magnet roller adaptors  116 ,  118 ,  120 ,  122 ,  124 ,  126 ,  128 ,  132 , and  194  for use in the universal magnet roller press assembly  101  of  FIG. 4A  and for use with the universal magnet roller press apparatus  100  of  FIG. 1 .  FIG. 14A  shows holder  278  for magnet roller adaptors  116 ,  118 ,  120 ,  122 ,  124 ,  126 ,  128 ,  132 , and  194  comprising openings  279  sized to hold magnet roller adaptors  116 ,  118 ,  120 ,  122 ,  124 ,  126 ,  128 ,  132 , and  194  in the holder  278 . Magnet roll adaptor  128  comprises body portion  129  and collar portion  130 . Magnet roll adaptor  132  comprises body portion  133  and collar portion  134 .  FIG. 14B  is an illustration of a front view of the holder  278  for magnet roller adaptors  116 ,  118 ,  120 ,  122 ,  124 ,  126 ,  128 ,  132 , and  194  of  FIG. 14A . 
       FIG. 5  is an illustration of a perspective view in partial cross-section of an embodiment of a screw drive assembly  150  of the universal magnet roller press apparatus  100  (see  FIG. 1 ) of the disclosure.  FIG. 6  is an illustration of a side view in partial cross section of an embodiment of the screw drive assembly  150  of the universal magnet roller press apparatus  100  of the disclosure. As shown in  FIG. 5 , the screw drive assembly  150  comprises a block body  152  having a top portion  154 , a central portion  156 , a bottom portion  158 , and a cap portion  160 . The screw drive assembly  150  further comprises a revolving handle  162  attached to the block body  152 . The revolving handle  162  has a handle attachment portion  164  and a revolving handle portion  166 . The revolving handle  162  actuates the screw drive assembly  150 . The screw drive assembly  150  further comprises an elongated screw  168  which is preferably threaded and located in the central portion  156  of the block body  152 . The elongated screw  168  is preferably inserted through an opening  170  in the cap portion  160  of the block body  152 . The elongated screw  168  is coupled at one end to the revolving handle  162  via a nut  172  and a washer  174  attachment. The elongated screw  168  may be inserted through opening  170  and through an axial bearing  176  having an axial bearing support  178 . The axial bearing support  178  is also inserted thorough opening  170 . The elongated screw  168  is further coupled to a radial bearing  180  surrounding a portion of the elongated screw  168 . The screw drive assembly  150  further comprises a push rod  182  having a shaft  184  with a hollow portion  186 . The push rod  182  is positioned within the block body  152 . One or more set screws  190  and one or more bushings  192  may be used to position the push rod  182  in place within the block body  152 . The elongated screw  168  may be actuated with the revolving handle  162  to move the elongated screw  168  through the hollow portion  186  to further engage and actuate the push rod  182  forward through an opening  188  in the block body  152  and out of the block body  152 . The revolving handle  162  actuates the elongated screw  168  to engage the push rod  182  out of the block body  152 , such that the push rod  182  pushes the magnet  110  and the hub  106  into and out of the magnet roller  102  during removal and installation of the magnet  110  and the hub  106 . 
     As shown in  FIG. 1 , the adaptor  194  may be used over the push rod  182  as it extends through the opening  188  from the screw drive assembly  150 . As shown in  FIG. 1 , the screw drive assembly  150  may further comprise the housing cover  196  to protect the screw drive assembly  150 . The screw drive assembly  150  may preferably be attached to the top end portion  198  of the mounting base  136 . 
       FIG. 7A  is an illustration of an exploded view of an embodiment of a front support assembly  200  of the universal magnet roller press apparatus  100  of the disclosure.  FIG. 7B  is an illustration of a perspective view of the assembled front support assembly  200  of  FIG. 7A . Referring to  FIG. 7A , the front support assembly  200  comprises a top part or magnet clamp bar  202 , a bottom part or magnet clamp support  204 , and a connector part  206  that connects the top part or magnet clamp bar  202  to the bottom part or magnet clamp support  204  via an attachment element  208 , preferably in the form of one or more screws that may be inserted through one or more connector part holes  210 . The connector part  206  may be attached to the magnet clamp support  204  with a connector element  212 , such as a long grooved pin, inserted through a bottom part hole  214  and through a connector part opening  216 . The connector element  212  may be used with one or more bushings  218  and one or more collar e-rings  220 . The magnet clamp bar  202  may further comprise one or more holes  222  for attachment with a latch component  224 . The latch component  224  may have one or more latch holes  226  that correspond to the holes  222 . One or more screws  228  or other attachment means may be inserted through the latch holes  226  and the holes  222  to attach the latch component  224  to the top part or magnet clamp bar  202  of the front support assembly  200 . When the front support assembly  200  is assembled, the top part or magnet clamp bar  202  and the bottom part or magnet clamp support  204  form a substantially circular opening  230  for insertion of the magnet roller  102 . The magnet roller  102  may be supported by a support portion or cradle  232  on the magnet clamp support  204  of the front support assembly  200 . As shown in  FIG. 1 , the front support assembly  200  is preferably located on a top portion  234  of the mounting base  136  downstream from the screw drive assembly  150  and downstream from the alignment cradle  144 . As further shown in  FIG. 1 , the latch component  224  may be coupled to locking clamp handle  236  attached to the mounting base  136  with latch plate  238 . When the magnet roller  102  is positioned in the front support assembly  200  for removal of the magnet and hub, latch component  224  can engage the locking clamp handle  236 , and the locking clamp handle  236  can be moved upward into a locked position  235  (see  FIG. 16D ). When the removal is complete, the locking clamp handle  236  may be moved downward to unlatch from the latch component  224  into an unlocked position  237  (see  FIG. 16A ). The front support assembly  200  holds the magnet roller  102  in place during removal and installation of the magnet  110  and the hub  106 . 
       FIG. 8A  is an illustration of an exploded view of an embodiment of a back support assembly  240  of the universal magnet roller press apparatus  100  (see  FIG. 1 ) of the disclosure.  FIG. 8B  is an illustration of a perspective view of the assembled back support assembly  240  of  FIG. 8A . Referring to  FIG. 8A , the back support assembly  240  comprises two preferably identical side plates  244  each having a hook end portion  246 . The hook end portions  246  are designed to hook around the first rod stop  146  on each side of the mounting base  136  when magnet rollers of a shorter length are used with the apparatus  100 . The hook end portions  246  are designed to hook around the second rod stop  148  on each side of the mounting base  136  when magnet rollers of a longer length are used with the apparatus  100 . The side plates  244  may have one or more side plate holes  248 . The back support assembly  240  further comprises a center block component  250  attached between the pair of side plates  244  and having a wall portion  252  with a substantially U-shaped back support slot  253  and having a platform portion  254 . The center block component  250  may have one or more side holes  256 . The center block component  250  may be attached on each side to the side plates  244  with suitable attachment means such as pins  258  and screws  260  with washers  262 . The back support assembly  240  further comprises a slide retainer bracket  264  having sides  266  and coupled to the pair of side plates  244 . The slide retainer bracket  264  may have one or more bracket holes  268  that may be used with attachment means, such as screws  270  and washers  272 , to attach to corresponding holes  274  in the hook end portions  246  of the side plates  244 . Bracket spacers  276  may be used to space the slide retainer bracket  264  from an outer portion  265  of the hook end portions  246 . As shown in  FIG. 1 , the back support assembly  240  is preferably located on top portion  242  of the mounting base  136  downstream from the screw drive assembly  150 , downstream from the alignment cradle  144 , and downstream from the front support assembly  200 . The back support assembly  240  holds one end of the magnet roller  102  in place during removal and installation of the magnet  110  and the hub  106 . 
       FIG. 9A  is an illustration of a side view of an embodiment of the back support assembly  240  of the universal magnet roller press apparatus  100  (see  FIG. 1 ) of the disclosure.  FIG. 9A  shows the back support assembly  240  coupled to the first rod stop  146  in a first position  280  and in broken lines shows the back support assembly  240  coupled to the second rod stop  148  in a second position  282  for use with the magnet roller  102 . In the first position  280 , the hook end portion  246  of the back support assembly  240  is engaged with the first rod stop  146  for shorter magnet rollers. In the second position  282 , the hook end portion  246  of the back support assembly  240  is moved back and is engaged with the second rod stop  148  for longer magnet rollers. 
       FIG. 9B  is an illustration of a front right side perspective view of an embodiment of the back support assembly  240  of the universal magnet roller press apparatus  100  (see  FIG. 1 ) of the disclosure.  FIG. 9B  shows the back support assembly  240  coupled to the first rod stop  146  of the mounting base  136 , shows the magnet roller  102  in position for insertion into adaptor  116 , and shows the adaptor  116  in position to be inserted into the U-shaped back support slot  253  of the center block component  250  of the back support assembly  240 . 
       FIG. 10  is a top view of magnet roller  102  positioned for installation in one of the embodiments of the universal magnet roller press apparatus  100  of the disclosure.  FIG. 10  shows the hub  106  of the magnet roller  102  coupled to adaptor  118  and engaged with push rod  182  and the magnet roller  102  end positioned in front support assembly  200 .  FIG. 10  further shows the opposite end of the magnet roller  102  coupled to adaptor  128  and positioned in center block component  250  of back support assembly  240 . 
       FIGS. 11A-11B  are illustrations of top cross-sectional views showing magnet and hub removal using embodiments of adaptors  194  and  116  of the universal magnet roller press assembly  101  of the disclosure.  FIGS. 12A-12B  are illustrations of top cross-sectional views showing magnet and hub installation using embodiments of adaptors  118 ,  128  of the universal magnet roller press assembly  101  of the disclosure.  FIGS. 13A-13B  are illustrations of top cross-sectional views showing magnet and hub removal using embodiments of adaptors  194 ,  126  of the universal magnet roller press assembly  101  of the disclosure. 
     In another embodiment there is provided a method  400  for removing and installing a magnet  110  (see  FIG. 2 ) and a hub  106  of a magnet roller  102  of a toner printer cartridge (not shown).  FIG. 23  is an illustration of a flow diagram showing an embodiment of the method  400 . The method  400  comprises step  402  of using a universal magnet roller press assembly  101  (see  FIGS. 4A-4B ) or  11  (see  FIG. 17A ,  19 A- 19 F) to remove a magnet  110  (see  FIG. 2 ) or  18  (see  FIG. 18A ) and a hub  106  (see  FIG. 2 ) or  17  (see  FIG. 18A ) from a magnet roller  102  (see  FIG. 2 ) or  12  (see  FIG. 18A ). The method  400  further comprises step  404  of using the universal magnet roller assembly  101  or  11  to install the removed magnet and the removed hub into a replacement magnet sleeve  302  (see  FIG. 16G ) to form a remanufactured magnet roller  308  (see  FIG. 16G ). 
     In another embodiment there is provided a method  500  for remanufacturing a magnet roller  102  of a toner printer cartridge.  FIG. 23  is an illustration of a flow diagram showing an embodiment of the method  500 .  FIGS. 16A-16F  are illustrations showing magnet and hub removal by a user  300  using one or more embodiments of magnet roller adaptors  116 ,  118 ,  120 ,  122 ,  124 ,  126 ,  128 ,  132 , and  194  of the universal magnet roller press assembly  101  of the disclosure.  FIGS. 16G-16K  are illustrations showing magnet and hub installation using one or more embodiments of adaptors  116 ,  118 ,  120 ,  122 ,  124 ,  126 ,  128 ,  132 , and  194  of the universal magnet roller press assembly  101  of the disclosure. 
     The method  500  comprises step  502  of providing a magnet roller  102  (see  FIG. 16A ) having a first end  104 , a second end  108 , a hub  106  attached at the first end  104 , a magnet sleeve  114 , and a magnet  110  preferably an inner magnet. The first part of the method involves removal of the magnet  110  and the hub  106  from a magnet roller  102  such as a worn magnet roller with a worn magnet sleeve  114 . The method  500  further comprises step  504  of coupling a first magnet roller adaptor  116  (see  FIG. 16A ) to the first end  104  or non-drive end of the magnet roller  102 . The method  500  further comprises step  506  of providing a universal magnet roller press apparatus  100  (see  FIG. 16A ) comprising a screw drive assembly  150  having a revolving handle  162  and a push rod  182  (see  FIG. 5 ), a front support assembly  200 , and a back support assembly  240 . In operation, preferably, the apparatus  100  is attached to a substantially flat surface with one or more bolts  145  (see  FIG. 16A ). However, screws or clamps may also be used to secure the apparatus  100  to a flat surface. The mag clamp bar  202  of the front support assembly  200  is opened to an open position  237  (see  FIG. 16A ). A magnet roller adaptor  194  may preferably be attached to push rod  182  (see  FIG. 5 ). 
     The method  500  further comprises step  508 , as shown in  FIG. 16B , of positioning and aligning the second end  108  or drive end of the magnet roller  102  in the support portion or cradle  232  on the magnet clamp support  204  of the front support assembly  200  and positioning and aligning the first end  104  or non-drive end with the first magnet roller adaptor  116  in the U-shaped support portion  253  of the back support assembly  240  of the universal magnet roller press apparatus  100 . As shown in  FIG. 16C , the mag clamp bar  202  is closed over the second end  108  of the magnet roller  102 . As shown in  FIG. 16D , the U-hook  239  of the locking clamp handle  236  is attached to the latch component  224  and the locking clamp handle  236  is pushed down to lock the front support assembly  200  over the second end  108  of the magnet roller  102  in a locked position  235 . The method  500  further comprises step  510  of using the screw drive assembly  150  to push the inner magnet  110  and the hub  106  out of the magnet sleeve  114 . As shown in  FIG. 16E , the revolving handle  162  is preferably rotated counter-clockwise in direction (D) to push the magnet  110  through the magnet sleeve  114  until the hub  106  moves or slides out at the first end  104  (see  FIG. 16F ). After the magnet  110  and hub  106  are pushed out of the first end  104  of the magnet roller  102 , the locking clamp handle  235  is pulled up and the mag clamp bar  202  is opened to remove the magnet roller  102 . The method  500  further comprises step  512  of removing the first magnet roller adaptor  116 . Preferably, the revolving handle  162  is rotated counter-clockwise to a beginning position. The method  500  further comprises step  514  of discarding the magnet sleeve  114 . Alternatively, the magnet sleeve  114  may be recycled. 
     The method  500  then comprises the installation steps for installing the removed magnet  110  and the removed hub  106  into a replacement magnet sleeve  302  (see  FIG. 16G ). The back support assembly  240  may be positioned at the first rod stop  146  or the second rod stop  148 . The replacement magnet sleeve  302  comprises a first end  304  and a second end  306 . The method  500  further comprises step  516  of inserting the removed inner magnet  110  and the removed hub  106  into the replacement magnet sleeve  302  having the first end  304  and the second end  306 . As shown in  FIG. 16G , the method  500  further comprises step  518  of coupling a second magnet roller adaptor  118  to the first end  304  of the replacement magnet sleeve  302  and coupling a third magnet roller adaptor  132  to the second end  306  of the replacement magnet sleeve  302 . As shown in  FIG. 16H , the method  500  further comprises step  520  of positioning and aligning the replacement magnet sleeve  302  in the front support assembly  200  and the back support assembly  240  of the universal magnet roller press apparatus  100 . As shown in  FIG. 16I , the mag clamp bar  202  is closed over the second end  108  of the magnet roller  102  but the locking clamp handle  236  does not need to be locked over the first end  304  of the remanufactured magnet roller  308 . The front support assembly  200  may be closed but the locking clamp handle  236  is preferably not used with installation to prevent damage to the magnet roller  308 . The method  500  further comprises step  522  of using the screw drive assembly  150  to attach the removed inner magnet  110  and the removed hub  106  to the replacement magnet sleeve  302  to form a remanufactured magnet roller  308 . As shown in  FIG. 16I , the revolving handle  162  is rotated in a clockwise direction (D) to press the removed hub  106  into the replacement magnet sleeve  302  until the rim of the hub  106  is pressed against the replacement magnet sleeve  302  all the way around the edge. To remove the remanufactured magnet roller  308 , rotate the revolving handle  162  clockwise to the beginning position, open the mag clamp bar  202  and remove the remanufactured magnet roller  308 . The method  500  further comprises step  524  of removing the second magnet roller adaptor  118  and the third magnet roller adaptor  132  from the remanufactured magnet roller  308 . 
     When the magnet roller  102  is used with the apparatus  100  and it is desired to remove the inner magnet  110  and hub  106 , a magnet roller adaptor  116  (see  FIG. 4A ) may be coupled to the first end  104  of the magnet roller  102  before positioning the magnet roller  102  in the apparatus  100 . When the magnet roller  102  is used with the apparatus  100  and it is desired to install the inner magnet  110  and hub  106  into a second or replacement magnet sleeve  302 , preferably one of magnet roller adaptors  118 ,  120 , or  122  (see  FIG. 14A ) may be coupled to the first end  104  of the magnet roller  102  before positioning the magnet roller  102  in the apparatus  100 . The magnet roller adaptors  118 ,  120 ,  122  may be used with extra long magnet rollers (e.g., about 13.16 inches), long magnet rollers (e.g., about 13.10 inches), or short magnet rollers (e.g., about 9.42 inches), depending on what is desired. When the magnet roller  102  is used with the apparatus  100  and it is desired to install the inner magnet  110  and hub  106  into a second or replacement magnet sleeve  302 , one or more of a magnet roller adaptors  124 ,  126 ,  128 , and  132  may be coupled to the second end  108  of the magnet roller  102  before positioning the magnet roller  102  in the apparatus  100 . 
     In another embodiment there is provided a method for removing and installing a magnet and a hub of a magnet roller of a toner printer cartridge used in electrophotographic image forming devices. The method comprises removing a magnet and a hub from a magnet roller by positioning and aligning the magnet roller in a universal magnet roller press apparatus, actuating with a revolving handle a push rod of a screw drive assembly to push the magnet and the hub out of a magnet sleeve, and discarding the magnet sleeve. The method further comprises installing the removed magnet and the removed hub into a replacement magnet sleeve by inserting the removed magnet and the removed hub into the replacement magnet sleeve, positioning and aligning the removed magnet and the removed hub within the replacement magnet sleeve in the universal magnet roller press apparatus, and actuating with the revolving handle the push rod of the screw drive assembly to push the removed magnet and the removed hub into the replacement magnet sleeve so that the removed magnet and the removed hub attach to the replacement magnet sleeve. The method further comprises removing the attached magnet roller from the apparatus. 
     All of the methods disclosed herein allow for securement of the magnet roller in the apparatus during removal and installation of the magnet and hub to avoid damage to the magnet and hub. In addition, all of the methods disclosed herein allow for proper alignment of the magnet roller during removal and installation of the magnet and hub. 
     In another embodiment there is provided a universal magnet roller press assembly  11  for removing and installing a magnet  18  and a hub  17  of a magnet roller  12  of a toner printer cartridge. As shown in  FIGS. 17A-17D  and  FIGS. 19A-19F ,  FIGS. 20A-20F ,  FIGS. 21A-21F , and  FIGS. 22A-22F , the assembly  11  comprises a universal magnet roller press  10  and a plurality of magnet roller adaptors  31   a ,  31   b ,  31   c ,  31   d , and  64   a,    64   b.    17 A- 17 D are illustrations of various views of the universal magnet roller press apparatus  10  of the disclosure.  FIGS. 18A-18D  are illustrations of various views of an existing magnet roller  12  that may be used with one of the embodiments of the universal magnet roller press apparatus  10 , assembly  11 , and method of the disclosure.  FIGS. 19A-19F ,  FIGS. 20A-20F ,  FIGS. 21A-21F , and  FIGS. 22A-22F  are illustrations of various views of magnet roller adaptors  31   a ,  31   b ,  31   c ,  31   d , and  64   a,    64   b  for use with the universal magnet roller press apparatus  10  of  FIGS. 17A-17D . 
       FIG. 17A-17D  are illustrations of top front perspective views of the universal magnet roller press apparatus  10  of the disclosure. The universal magnet roller press apparatus  10  may be used with any number of existing magnet rollers such as an existing magnet roller  12  (see  FIGS. 18A-18D ). The magnet roller  12  has a first end  14  having a hub  17 . The magnet roller  12  has a second end  16 . The magnet roller  12  comprises a magnet  18 , preferably an inner magnet, and a magnet sleeve  19 .  FIG. 17A  is an illustration of a top perspective view of the apparatus  10 . The apparatus  10  comprises a mounting base  20  with end pieces  22 . Preferably, the mounting base is comprised of steel. The mounting base  20  has a first alignment block  24  and a second alignment block  25  attached to the top of the mounting base  20 . The first alignment block  24  may be comprised of felt, plastic or another suitable material and is designed to cradle or hold the magnet roller  12  during the removal and installation process. The second alignment block  25  may be comprised of felt, plastic or another suitable material and is designed to cradle or hold universal magnet roller adaptors such as universal magnet roller adaptors  31   a,    31   b,    31   c,    31   d.    
     The apparatus  10  further comprises a rear slide lock or back support assembly  26  comprising a base portion  32  configured to slide along a slotted slide portion  34  formed in a top portion of the mounting base  20 . The rear slide lock or back support assembly  26  is attached to a top end of the mounting base  20 . The base portion  32  has a stop portion  36  with an opening  38  for insertion of one of the ends of the magnet roller depending on whether the magnet roller is undergoing removal or installation. The base portion  32  further comprises a locking handle  40  to lock the rear slide lock or back support assembly  26  in place. The rear slide lock or back support assembly  26  further comprises openings  42  on each side of an end  44  of the slotted slide portion  34  for locking the base portion  32  in place when it slides forward into a desired position. 
     The apparatus  10  further comprises a front lock magnet support or front support assembly  28  comprising a block portion  46  having an opening  48  for insertion of one of the ends of the magnet roller  12 . The front lock magnet support or front support assembly  28  is attached to a top portion of the mounting base  20  and is spaced apart from the rear slide lock or back support assembly  26 . The front lock magnet support or front support assembly  28  further comprises a front locking handle  50  on a steel pad  52  to lock the front lock magnet support or front support assembly  28  in place. The front lock magnet support or front support assembly  28  further comprises a stop portion  54  (see  FIG. 17B ) for stopping the magnet roller  12  in place. 
     The apparatus  10  further comprises a screw mechanism or screw drive assembly  30  comprising a housing cover  56 , an opening  58  for insertion of a screw operated push rod  60 . The screw mechanism or screw drive assembly  30  is attached to a top end of the mounting base  20  opposite the top end where the rear slide lock or back support assembly  26  is attached. The screw operated push rod  60  is designed to be inserted into the magnet roller end and remove a magnet roller hub  14 . The screw mechanism or screw drive assembly  30  further comprises a revolving handle  62  for actuating the screw mechanism or screw drive assembly  30 . 
     The universal magnet roller press apparatus  10  may further comprise optional rear slide adaptor stop rings or magnet roller adaptors  64 . The stop rings or magnet roller adaptors  64  may be of various sizes for various size magnet roller lengths.  FIG. 17B  is an illustration of a front right perspective view of the universal magnet roller press apparatus  10  of the disclosure.  FIG. 17C  is an illustration of a front left perspective view of the universal magnet roller press apparatus of the disclosure.  FIG. 17D  is an illustration of a top view of the universal magnet roller press apparatus  10  of the disclosure. 
     In another embodiment of the disclosure there is provided a method for replacing a magnet roller sleeve and possibly other components of a magnet roller. The method comprises the step of placing the magnet roller  12  on the first alignment block  24  with the first hub end  14  facing toward the rear slide lock  26 . The method further comprises the step of pushing the stop portion  54  in front of the opening  48  of the rear slide lock  26 . The method further comprises the step of inserting the magnet roller  12  with the second end  16  into the opening  48  of the rear slide lock  26  until it touches the stop portion  54 . The method further comprises the step of aligning the first hub end  14 , and in particular, the magnet sleeve non-coated portion, with the opening  38  of the rear slide lock  26 . The method further comprises the step of locking the front locking handle  50 . The method further comprises the step of turning the revolving handle  62  of the screw mechanism  30  counterclockwise to move or actuate the push rod  60  forward and continuing to turn revolving handle  62  until the hub  17  and the magnet  18  are pushed out of the first hub end  14  opening of the sleeve. Generally, the hub and a spring element (not shown) remain. The method further comprises the step of installing and replacing with a replacement magnet sleeve (see  FIG. 16G ). The method further comprises the step of positioning the existing removed hub  17  into an end  70  of one of the universal adaptors  31   a - d . The apparatus is designed to be used with any number of suitable universal magnet roller adaptors. The method further comprises the step of placing one of the universal adaptors  31   a - d  with the removed hub  17  onto the push rod  60  so that it sits in the second alignment block  25 . The magnet  18  is then manually placed or inserted into the new sleeve and may have the concentric spring on the hub end. The new sleeve is then positioned into the first alignment block  24 . The stop portion  54  is pushed in front of the opening  48  of the front lock magnet support  28 , and the rear slide adaptor stop rings  64  may be inserted into the opening  38  of the rear slide lock  26 . The rear slide lock  26  may then be pushed forward onto the new sleeve until the forward sleeve lip touches the stop plate. The pins (not shown) of the rear slide lock  26  fall into place in the pin holes  42  of the mounting base  20 . Once the pins are in place, the handle  40  can be actuated down and locked. The revolving handle  62  can be turned counterclockwise to move the push rod  60  forward and the hub adaptor until the hub  17  engages the new sleeve and mates the hub flange with sleeve. The screw operated push rod removes the magnet roller hubs and magnet rods and installs the removed hubs and magnet rods into new sleeves. The method allows a magnet roller to be taken apart and the universal magnet press is adapted to work with any size magnet roller. The front locking support is primarily used instead of the rear locking support to retain the magnet roller in place and make it easier to disassemble. 
     The above description sets forth, rather broadly, a summary of embodiments of the disclosure so that the detailed description that follows may be better understood and contributions of the disclosure to the art may be better appreciated. Some of the embodiments of the disclosure may not include all of the features or characteristics listed in the above summary. There may be, of course, other features of the disclosure that will be described below and may form the subject matter of claims. In this respect, before explaining at least one embodiment of the disclosure in detail, it is to be understood that the disclosure is not limited in its application to the details of the construction and to the arrangement of the components set forth in the following description or as illustrated in the drawings. The disclosure is capable of other embodiments and of being practiced and carried out in various ways. 
     Many modifications and other embodiments of the disclosure will come to mind to one skilled in the art to which this disclosure pertains having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. The embodiments described herein are meant to be illustrative and are not intended to be limiting. Although specific terms are employed herein, they are used in a generic and descriptive sense only and for purposes of limitation. The disclosure is not limited in its application to the details of the construction and to the arrangement of the components set forth in the above description or as illustrated in the drawings.