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AssigneeCanon Kabushiki Kaisha
InventorsNoritomo Yamaguchi, Yoichiro Iizuka
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A roller to be provided in a main assembly of an image forming apparatus or in a cartridge detachably mountable to the main assembly includes: a cylindrical shaft supported by the main assembly or the cartridge, wherein the cylindrical shaft includes, in at least one position on a circumference thereof, a separation region where a pair of end portions thereof which oppose to or contact each other with respect to a circumferential direction, and wherein the separation region extends in an axial direction of the cylindrical shaft; and a rotatable cylindrical member mounted around an outer circumference of the cylindrical shaft, wherein the rotatable cylindrical member is rotatable about the cylindrical shaft while an inner peripheral surface thereof is press-contacted to an outer peripheral surface of the cylindrical shaft in a region other than the separation region with respect to the circumferential direction.
A roller to be provided in a main assembly of an image forming apparatus or in a cartridge detachably mountable to the main assembly, said roller comprising:
An image forming apparatus comprising:
A manufacturing method of a cylindrical shaft constituting a roller to be provided in a main assembly of an image forming apparatus or in a cartridge detachably mountable to the main assembly, wherein the cylindrical shaft includes, in at least one position on a circumference thereof, a separation region in which a pair of end portions thereof which oppose to or contact each other with respect to a circumferential direction, wherein the support extends in an axial direction of the cylindrical shaft, wherein a rotatable cylindrical member is rotatably mounted around an outer circumference of the cylindrical shaft, and wherein the cylindrical shaft further includes an engaging portion engageable with a rotation preventing portion provided in the main assembly or the cartridge, said manufacturing method comprising:
Dependencies are inferred from the claim text.