Process cartridge modification and method for retractable process cartridge drive
View Patent ↗A modification for an imaging cartridge is provided for use with certain aftermarket or non-OEM cartridge drive mechanisms. At least one wall of a cartridge guiding member is removed to increase a clearance between the guiding member and the cartridge drive mechanism.
1. A method of modifying a process cartridge, the method comprising:
obtaining a process cartridge including a guide member having a central body portion with an opening defining an axis and a regulating projection positioned substantially adjacent to the opening and extending axially from the central body, the regulating projection including an inner wall and an outer wall spaced radially outwardly from the inner wall;
eliminating the inner wall to increase a radial distance between the axis and the regulating projection, and;
installing an OPC drum into the process cartridge, the OPC drum including a replacement gear and a replacement coupling member, the replacement coupling member being mounted for axial movement relative to the gear between an extended position and a retracted position.
2. The method of claim 1 , wherein the outer wall is an outer arcuate wall arranged substantially concentrically with respect to the axis, wherein the inner wall includes a flat surface portion and an arc portion arranged substantially concentrically with respect to the axis, and wherein eliminating the inner wall includes eliminating the flat surface portion and the arc portion.
3. The method of claim 2 , wherein the regulating portion further includes a joining wall extending between the arc portion and the outer arcuate wall, the method further comprising eliminating the joining wall.
4. The method of claim 1 , wherein eliminating the inner arcuate wall includes removing the inner wall from the guide member.
5. The method of claim 4 , wherein the outer wall includes an inner arcuate surface facing the axis and having an inner arcuate surface radius, and wherein removing the inner wall includes performing a cutting operation using a rotary cutter having a radius slightly less than the inner arcuate surface radius.
6. The method of claim 1 , wherein eliminating the inner arcuate wall includes replacing the guide member with a second guide member that does not include the inner wall.
7. The method of claim 1 , wherein installing the OPC drum into the process cartridge includes positioning the coupling member within the opening.
8. A method of modifying a process cartridge, the method comprising:
obtaining a process cartridge including a guide member having a central body portion with an opening defining an axis and a regulating projection positioned substantially adjacent to the opening and extending axially from the central body, the regulating projection including an innermost arcuate portion spaced a radial distance from the axis;
modifying the guide member to increase the radial distance between the innermost arcuate portion of the regulating projection and the axis; and,
installing an OPC drum into the process cartridge, the OPC drum including a replacement gear and a replacement coupling member, the replacement coupling member being mounted for axial movement relative to the gear between an extended position and a retracted position.
9. The method of claim 8 , wherein before modifying the guide member the radial distance is R 1 , wherein after modifying the guide member the radial distance is R 2 , and wherein R 2 is at least about 20% greater than R 1 .
10. The method of claim 9 , wherein R 2 is between about 20% and about 100% greater than R 1 .
11. The method of claim 9 , wherein R 2 is about 50% greater than R 1 .
12. The method of claim 8 , wherein the regulating projection includes an outer arcuate wall arranged substantially concentrically with respect to the axis, and an inner wall including an arc portion arranged substantially concentrically with respect to the axis, and wherein modifying the guide portion includes eliminating the inner wall.
13. The method of claim 12 , wherein before modifying the guide member the arc portion defines the innermost arcuate portion and wherein after modifying the guide member an inner surface of the outer arcuate wall defines the innermost arcuate portion.
14. The method of claim 8 , wherein modifying the guide member includes performing a cutting operation on the regulating portion.
15. The method of claim 8 , wherein modifying the guide member includes replacing the guide member with a second guide member.
16. The method of claim 8 , wherein installing the OPC drum into the process cartridge includes positioning the coupling member within the opening.