Process cartridge for an imaging device
A cartridge that can be detachably installed within an imaging device, which includes a cartridge casing, a photosensitive drum driving assembly located on the casing, and a control mechanism for controlling extension and retraction of a force receiving head in the photosensitive drum driving assembly. The control mechanism includes a control rod, which can rotate around a pivot on the cartridge casing, and a elastic means mounted on the control rod. The cartridge of the invention uses a control mechanism to control extension and retraction of the force receiving head in the photosensitive drum driving assembly, and as a result when the cartridge is removed of the imaging device, the force receiving head does not become stuck by a driving head of the imaging device.
1. A process cartridge detachably installed to an image forming device, comprises:
a cartridge casing;
a photosensitive drum driving assembly located on the casing; and
a control mechanism for controlling extension and retraction of a force receiving head in the photosensitive drum driving assembly,
wherein the control mechanism includes a control rod rotatable about a pivot on the cartridge casing and a elastic means mounted on the control rod.
2. A process cartridge according to claim 1 , wherein the pivot is a positioning column arranged on a side wall of the cartridge casing, and wherein the control rod is provided with a positioning hole corresponding to the positioning column.
3. A process cartridge according to claim 1 , wherein the pivot is a positioning hole arranged in a side wall of the cartridge casing and the control rod is provided with a positioning column corresponding to the positioning hole.
4. A process cartridge according to claim 1 , wherein the control rod is provided with a biasing portion for coupling the force receiving head and a control portion for coupling a restraining portion on an inner wall of the imaging device.
5. A process cartridge according to claim 4 , wherein the force receiving head is provided with a slanting surface, and wherein the biasing portion is provided with a biasing surface for imposing a biasing force on the slanting surface.
6. A process cartridge according to claim 1 , wherein both ends of the elastic means are respectively mounted on a column of the control rod and a column of the cartridge body.
7. A process cartridge according to claim 5 , wherein the elastic means is a compression spring.
8. A process cartridge according to claim 2 , wherein the control rod is provided with a biasing portion for coupling the force receiving head and a control portion for coupling a restraining portion on an inner wall of the imaging device.
9. A process cartridge according to claim 3 , wherein the control rod is provided with a biasing portion for coupling the force receiving head and a control portion for coupling a restraining portion on an inner wall of the imaging device.
10. A process cartridge according to claim 8 , wherein the force receiving head is provided with a slanting surface, and wherein the biasing portion is provided with a biasing surface for imposing a biasing force on the slanting surface.
11. A process cartridge according to claim 9 , wherein the force receiving head is provided with a slanting surface, and wherein the biasing portion is provided with a biasing surface for imposing a biasing force on the slanting surface.
12. A process cartridge according to claim 10 , wherein the elastic means is a compression spring.
13. A process cartridge according to claim 11 , wherein the elastic means is a compression spring.