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AssigneeCanon Kabushiki Kaisha
InventorsMasanari Morioka, Shigeo Miyabe, Takahito Ueno
Estimating the term…
An image forming apparatus cartridge includes a casing, a developer roller having an axis L1, and a coupling member having an axis L2. The coupling member includes a first end portion operatively connected to the developer roller and a second end portion, with the second end portion including at least one projection that is open to the axis L2 and an outer surface that faces away from the first end portion. For at least part of the outer surface, a maximum distance from the axis L2 to the outer surface along a line perpendicular to the axis L2 decreases as the distance along the axis L2 from the first end portion increases.
An image forming apparatus cartridge comprising:
An image forming apparatus cartridge comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
For transmitting mechanical drive power to the process cartridge, drive mechanisms, gears, couplings, braking mechanisms: axial couplings
Couplings for rigidly connecting two coaxial shafts or other movable machine elements: quick-acting couplings in which the parts are connected by…
Quick-acting couplings in which the parts are connected by simply bringing them together axially: without axial retaining means rotating with the…
Adapted to specific functions: specially adapted to allow radial displacement, e.g. Oldham couplings
About 1 year 5 months of term left · ends 24 Mar 2028 (estimated)
The present invention relates to an electrophotographic image forming apparatus, a developing apparatus used in the electrophotographic image forming apparatus, and a coupling member used in the electrophotographic image forming apparatus.
Examples of the electrophotographic image forming apparatus include an electrophotographic copying machine, an electrophotographic printer (a laser beam printer, an LED printer, etc.), and the like.
The developing apparatus (developing device) is mounted to a main assembly of the electrophotographic image forming apparatus and develops an electrostatic latent image formed on an electrophotographic photosensitive member.
FIG. 1 is a side sectional view of a developing cartridge according to an embodiment of the present invention.
FIG. 2 is a perspective view of the developing cartridge according to the embodiment of the present invention.
FIG. 3 is a perspective view of the developing cartridge according to the embodiment of the present invention.
Hereinbelow, a developing cartridge, an electrophotographic image forming apparatus, and a coupling member according to the present invention will be described with reference to the drawings.
In the following embodiments, a developing cartridge of the type in which a user can mount and demount the developing cartridge with respect to an apparatus main assembly. However, the present invention is also applicable to a developing device which is used in a state in which it is mounted and fixed to the main assembly.
Further, the present invention is specifically applicable to a single coupling member (e.g., those shown in FIGS. 6(a), 14(a3), 28(c), 30 and 77(b)), a developing device (developing cartridge) (e.g., those shown in FIGS. 2, 57 and 60), and an electrophotographic image forming apparatus (e.g., those shown in FIGS. 5 and 75).