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US 6,154,623 AGranted
Process cartridge and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsAkira Suzuki, Tadayuki Tsuda, Shigeo Miyabe
Life of this patent
Estimating the term…
Abstract
A process cartridge detachably mountable to a main body of an electrophotographic image forming apparatus includes an electrophotographic photosensitive member, a developing unit for developing a latent image formed on the electrophotographic photosensitive member with a toner, a toner containing portion for containing the toner used by the developing unit, and a recess formed in an outer surface of the toner containing portion over an entire area thereof substantially in parallel with an axis of the electrophotographic photosensitive member for gripping the process cartridge.
Claims35
A process cartridge detachably mountable to a main body of an electrophotographic image forming apparatus, comprising:
- an electrophotographic photosensitive member;
- developing means for developing a latent image formed on said electrophotographic photosensitive member with a toner;
- a toner containing portion for containing the toner to be used by said developing means;
- and
- a recess formed in an outer surface of said toner containing portion along a direction transverse to a mounting direction along which said process cartridge is mounted onto and dismounted from said main body of said electrophotographic image forming apparatus for gripping said process cartridge;
- wherein said recess has opening portions opened at both ends of said toner containing portion and communicates with said opening portions, and
- wherein said mounting direction is a direction transverse to an axis of said electrophotographic photosensitive member.
4 more elements
A process cartridge detachably mountable to a main body of an electrophotographic image forming apparatus, comprising:
- an electrophotographic photosensitive member;
- a developing member for developing a latent image formed on said electrophotographic photosensitive member with a toner;
- a toner containing portion for containing the toner to be used by said developing member;
- a recess formed in an outer surface of said toner containing portion along a direction transverse to a mounting direction along which said process cartridge is mounted onto and dismounted from said main body of said electrophotographic image forming apparatus for gripping said process cartridge;
- wherein said recess extends from one end to the other end of said toner containing portion;
- and
- wherein said mounting direction is a direction transverse to an axis of said electrophotographic photosensitive member;
- and
- a plurality of auxiliary recessed portions formed on an inclined wall of said recess disposed at an upstream side in said mounting direction and disposed side by side in a direction transverse to a longitudinal direction of said recess, so that an operator's finger is positioned on at least one of said auxiliary recessed portions when gripping said process cartridge.
6 more elements
A process cartridge detachably mountable to a main body of an electrophotographic image forming apparatus, comprising:
- an electrophotographic photosensitive member;
- a developing member for developing a latent image formed on said electrophotographic photosensitive member with a toner;
- a toner containing portion for containing the toner to be used by said developing member;
- a recess formed in an outer surface of said toner containing portion along a direction transverse to a mounting direction along which said process cartridge is mounted onto and dismounted from said main body of said electrophotographic image forming apparatus for gripping said process cartridge;
- wherein said recess extends from one end to the other end of said toner containing portion;
- and
- wherein said mounting direction is a direction transverse to an axis of said electrophotographic photosensitive member;
- a plurality of ribs, said ribs being formed on an outer surface of said toner containing portion opposite to said outer surface on which said recess is formed and being disposed side by side substantially in parallel with a longitudinal direction of said recess, wherein when said process cartridge is gripped, an operator grips said process cartridge with a hand of the operator across said recess and said ribs;
- and
- a projection provided on a bottom of one longitudinal end portion of said recess, configured and positioned to permit contact with an operator's finger when said process cartridge is gripped by the operator.
7 more elements
A process cartridge detachably mountable to a main body of an electrophotographic image forming apparatus, comprising:
- an electrophotographic photosensitive drum;
- a developing roller to supply a toner to said electrophotographic photosensitive drum by rotation thereof for developing a latent image formed on said electrophotographic photosensitive drum with the toner;
- a charge member for charging said electrophotographic photosensitive drum;
- a cleaning member for removing a residual toner remaining on said electrophotographic photosensitive drum;
- a toner containing portion for containing the toner to be used by said developing roller;
- a recess formed in an outer surface of said toner containing portion along a direction transverse to a mounting direction along which said process cartridge is mounted onto and dismounted from said main body of said electrophotographic image forming apparatus for gripping said process cartridge;
- a plurality of ribs, said ribs being formed on an outer surface of said toner containing portion opposite to said outer surface on which said recess is formed and being disposed side by side substantially in parallel with a longitudinal direction of said recess, wherein when said process cartridge is gripped, an operator grips said process cartridge with a hand of the operator across said recess and said ribs;
- and
- a plurality of auxiliary recessed portions formed on an inclined wall of said recess disposed at an upstream side in said mounting direction and disposed side by side in a direction transverse to the longitudinal direction of said recess so that an operator's finger is positioned on at least one of said auxiliary recessed portions when gripping said process cartridge;
- wherein said process cartridge can be gripped by hooking the operator's fingers to said recess and said ribs.
7 more elements
A process cartridge detachably mountable to a main body of an electrophotographic image forming apparatus, comprising:
- an electrophotographic photosensitive drum;
- a developing roller to supply a toner to said electrophotographic photosensitive drum by rotation thereof for developing a latent image formed on said electrophotographic photosensitive drum with the toner;
- a charge member for charging said electrophotographic photosensitive drum;
- a cleaning member for removing a residual toner remaining on said electrophotographic photosensitive drum;
- a toner containing portion for containing the toner to be used by said developing roller;
- a recess formed in an outer surface of said toner containing portion along a direction transverse to a mounting direction along which said process cartridge is mounted onto and dismounted from, said main body of said electrophotographic image forming apparatus for gripping said process cartridge;
- a plurality of ribs, said ribs being formed on an outer surface of said toner containing portion opposite to said outer surface on which said recess is formed and being disposed side by side substantially in parallel with a longitudinal direction of said recess, wherein when said process cartridge is gripped, an operator grips said process cartridge with a hand of the operator across said recess and said ribs;
- a plurality of auxiliary recessed portions formed on an inclined wall of said recess disposed at an upstream side in said mounting direction and disposed side by side in a direction transverse to the longitudinal direction of said recess so that an operator's finger is positioned on at least one of said auxiliary recessed portions when gripping said process cartridge;
- and
- a force receiving portion for receiving a force for moving said process cartridge to a predetermined mounting position when the process cartridge is mounted to the main body to deviate from the predetermined mounting position, said force receiving portion being disposed at a downstream side of said recess in said mounting direction and being capable of abutting against an inner surface of an opening/closing member of the main body when said opening/closing member is closed;
- wherein said process cartridge can be gripped by hooking the operator's fingers on said recess and said ribs.
8 more elements
An electrophotographic image forming apparatus onto which a process cartridge is detachably mountable for forming an image on a recording medium, said electrophotographic image forming apparatus comprising:
- (a) mount means for detachably mounting said process cartridge, said process cartridge including an electrophotographic photosensitive member;
- developing means for developing a latent image formed on said electrophotographic photosensitive member with a toner;
- a toner containing portion for containing the toner to be used by said developing means;
- and a recess formed in an outer surface of said toner containing portion along a direction transverse to a mounting direction along which said process cartridge is mounted onto and dismounted from said main body of said electrophotographic image forming apparatus for gripping said process cartridge;
- wherein said recess has opening portions opened at both ends of said toner containing portion and communicates with said opening portions, and said mounting direction is a direction transverse to an axis of said electrophotographic photosensitive member;
- and
- (b) convey means for conveying the recording medium.
4 more elements
An electrophotographic image forming apparatus onto which a process cartridge is detachably mountable for forming an image on a recording medium, said electrophotographic image forming apparatus comprising:
- (a) mount means for detachably mounting the process cartridge, the process cartridge including:
- an electrophotographic photosensitive member;
- a developing member for developing a latent image formed on the electrophotographic photosensitive member with a toner;
- a toner containing portion for containing the toner to be used by the developing member;
- a recess formed in an outer surface of the toner containing portion along a direction transverse to a mounting direction along which said process cartridge is mounted onto and dismounted from said main body of said electrophotographic image forming apparatus for gripping the process cartridge, wherein the recess extends from one end to the other end of the toner containing portion, and wherein said mounting direction is a direction transverse to an axis of the electrophotographic photosensitive member;
- and a plurality of auxiliary recessed portions formed on an inclined wall of the recess disposed at a upstream side in said mounting direction and disposed side by side in a direction transverse to a longitudinal direction of said recess, so that an operator's finger is positioned on at least one of said auxiliary recessed portions when gripping said process cartridge;
- and
- (b) convey means for conveying the recording medium.
5 more elements
An electrophotographic image forming apparatus onto which a process cartridge is detachably mountable for forming an image on a recording medium, said electrophotographic image forming apparatus comprising:
- (a) mount means for detachably mounting the process cartridge, the process cartridge including:
- an electrophotographic photosensitive member;
- a developing member for developing a latent image formed on said electrophotographic photosensitive member with a toner;
- a toner containing portion for containing the toner to be used by the developing member;
- a recess formed in an outer surface of the toner containing portion along a direction transverse to a mounting direction along which said process cartridge is mounted onto and dismounted from said main body of said electrophotographic image forming apparatus for gripping the process cartridge, wherein the recess extends from one end to the other end of the toner containing portion, and wherein said mounting direction is a direction transverse to an axis of the electrophotographic photosensitive member;
- a plurality of ribs being formed on an outer surface of the toner containing portion opposite to the outer surface on which the recess is formed and being disposed side by side substantially in parallel with a longitudinal direction of the recess, wherein when the process cartridge is gripped, an operator grips the process cartridge with a hand of the operator across the recess and the ribs;
- and a projection provided on a bottom of one longitudinal end portion of the recess, configured and positioned to permit contact with the operator's finger when the process cartridge is gripped by the operator;
- and
- (b) convey means for conveying the recording medium.
6 more elements
Dependencies are inferred from the claim text.