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US 6,574,446 B2Granted
Image forming apparatus having drive transmitting member
AssigneeCanon Kabushiki Kaisha
InventorKunihiko Kitayama
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes a process unit detachably mountable to a main assembly of the apparatus, the process unit including an image bearing member for bearing an electrostatic image and a process unit actable on the image bearing member, the process unit having a rotational shaft; a driving shaft, substantially co-axial with the rotational shaft, for rotating the rotational shaft; and a drive transmitting member, engaged with the driving shaft and with the rotational shaft, for transmitting a driving force to the rotational shaft from the driving shaft. The drive transmitting member is engaged with the driving shaft with play and is engaged with the rotational shaft with play.
Claims38
An image forming apparatus comprising:
- a process cartridge detachably mountable to a main assembly of said apparatus, said process cartridge including an image bearing member for bearing an electrostatic image and process means actable on said image bearing member, said process means having a rotational shaft;
- a driving shaft, substantially co-axial with said rotational shaft, for rotating said rotational shaft;
- a drive transmitting member, engaged with said driving shaft and with said rotational shaft, for transmitting a driving force to said rotational shaft from said driving shaft;
- and
- an image bearing member rotating shaft,
- wherein said image bearing member is engaged with said image bearing member rotating shaft substantially without play, and
- wherein said drive transmitting member is engaged with said driving shaft with play and is engaged with said rotational shaft with play.
4 more elements
An image forming apparatus comprising:
- a process cartridge detachably mountable to a main assembly of said apparatus, said process cartridge including an image bearing member for bearing an electrostatic image and process means actable on said image bearing member, said process means having a rotational shaft;
- a driving shaft, substantially co-axial with said rotational shaft, for rotating said rotational shaft;
- and
- a drive transmitting member, engaged with said driving shaft and with said rotational shaft, for transmitting a driving force to said rotational shaft from said driving shaft,
- wherein said drive transmitting member is engaged with said driving shaft with play and is engaged with said rotational shaft with play, and
- wherein the play is not less than 200 μm at portions where said drive transmitting member and said driving shaft are engaged with each other, and where said drive transmitting member and said rotational shaft are engaged with each other.
3 more elements
An image forming apparatus comprising:
- a process cartridge detachably mountable to a main assembly of said apparatus, said process cartridge including an image bearing member for bearing an electrostatic image and process means actable on said image bearing member, said process means having a rotational shaft;
- a driving shaft, substantially co-axial with said rotational shaft, for rotating said rotational shaft;
- and
- a drive transmitting member, engaged with said driving shaft and with said rotational shaft, for transmitting a driving force to said rotational shaft from said driving shaft,
- wherein said drive transmitting member is engaged with said driving shaft with play and is engaged with said rotational shaft with play,
- wherein said drive transmitting member is provided with grooves for engagement with said driving shaft and said rotational shaft, respectively, and said driving shaft and said rotational shaft are provided with projections for engagement with said grooves, respectively, and
- wherein said drive transmitting member is provided with a tapered portion for guiding engagement of one of said projections into one of said grooves.
4 more elements
A process cartridge detachably mountable to an image forming apparatus, said process cartridge comprising:
- an image bearing member for bearing an electrostatic image;
- process means actable on said image bearing member, said process means including a rotational shaft;
- a drive transmitting member for receiving a driving force from a driving shaft provided in a main assembly of the apparatus;
- and
- an image bearing member rotating shaft,
- wherein said image bearing member is engaged with said image bearing member rotating shaft substantially without play, and
- wherein said drive transmitting member is engaged with said driving shaft with play and is engaged with said rotational shaft with play.
4 more elements
A process cartridge detachably mountable to an image forming apparatus, said process cartridge comprising:
- an image bearing member for bearing an electrostatic image;
- process means actable on said image bearing member, said process means including a rotational shaft;
- and
- a drive transmitting member for receiving a driving force from a driving shaft provided in a main assembly of the apparatus,
- wherein said drive transmitting member is engaged with said driving shaft with play and is engaged with said rotational shaft with play, and
- wherein the play is not less than 200 μm at portions where said drive transmitting member and said driving shaft are engaged with each other, and where said drive transmitting member and said rotational shaft are engaged with each other.
3 more elements
A process cartridge detachably mountable to an image forming apparatus, said process cartridge comprising:
- an image bearing member for bearing an electrostatic image;
- process means actable on said image bearing member, said process means including a rotational shaft;
- and
- a drive transmitting member for receiving a driving force from a driving shaft provided in a main assembly of the apparatus,
- wherein said drive transmitting member is engaged with said driving shaft with play and is engaged with said rotational shaft with play,
- wherein said drive transmitting member is provided with grooves for engagement with said driving shaft and said rotational shaft, respectively, and said driving shaft and said rotational shaft are provided with projections for engagement with said grooves, respectively, and
- wherein said drive transmitting member is provided with a tapered portion for guiding engagement of one of the projections into one of the grooves.
4 more elements
Dependencies are inferred from the claim text.