Method for manufacturing image bearing unit and method for manufacturing cartridge

Patent metadata

Field	Value
Publication number	US-10520883-B2
Application number	US-201916365846-A
Country	US
Kind code	B2
Filing date	Mar 27, 2019
Priority date	Mar 30, 2018
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

A manufacturing method includes a removing step for removing at least a part of a contact portion of a cover portion from a supporting member, the cover portion being configured to come into contact with a projecting portion included in a frame when the supporting member is deformed to allow a second engaged portion to be detached from an engaging portion in a state in which a fixed portion of the supporting member is fixed to the frame, a deforming step for deforming the supporting member to allow the second engaged portion to be detached from the engaging portion in the state in which the fixed portion is fixed to the frame, and a separating step for detaching an engaging portion from a first engaged portion and separating a developing unit from the frame.

First claim

What is claimed is:

1. A manufacturing method for manufacturing an image bearing unit from a material unit,
the material unit including:
an image bearing member;
a frame including a first engaged portion, the frame including a projecting portion projecting toward an outer side of the frame with respect to an axis direction of the image bearing member;
a supporting member including a fixed portion fixed to the frame, the supporting member including a bearing portion that supports the image bearing member, a through-hole, a second engaged portion opposed to the first engaged portion, and a cover portion that covers at least a part of the projecting portion penetrating the through-hole, the cover portion including a contact portion; and
a developing unit including an engaging portion, the engaging portion engaging with the first engaged portion and the second engaged portion such that the developing unit being swingably coupled to the frame,

wherein the contact portion is configured to come into contact with the projecting portion when the supporting member is deformed

to allow the second engaged portion to be detached from the engaging portion in a state in which the fixed portion is fixed to the frame,
the manufacturing method comprising:
a removing step of removing at least a part of the contact portion from the supporting member;
a deforming step of deforming the supporting member to allow the second engaged portion to be detached from the engaging portion in the state in which the fixed portion is fixed to the frame; and
a separating step of detaching the engaging portion from the first engaged portion and separating the developing unit from the frame.

2. The manufacturing method according to claim 1 , wherein, when viewed in the axis direction, the projecting portion and the cover portion are located between the bearing portion and the second engaged portion.

3. The manufacturing method according to claim 1 , wherein
the fixed portion is a portion bonded to the frame around the bearing portion, and
in the deforming step, the supporting member is deformed in a state in which the fixed portion is bonded to the frame.

4. The manufacturing method according to claim 3 , wherein the frame and the supporting member are formed of a styrene-based resin composition and bonded by a terpene-based solvent.

5. The manufacturing method according to claim 1 , wherein
the material unit includes an electrode disposed to cover the projecting portion, and
the cover portion covers the projecting portion to expose at least a part of the electrode.

6. The manufacturing method according to claim 1 , wherein the bearing portion is located on an inner side of the cover portion with respect to the axis direction.

7. The manufacturing method according to claim 6 , wherein, in the deforming step, a combining portion connecting the bearing portion and the second engaged portion is deformed.

8. The manufacturing method according to claim 1 , further comprising:
a second separating step of detaching the image bearing member from the bearing portion and separating the image bearing member from the frame; and
an attaching step of attaching the image bearing member or an image bearing member different from the image bearing member to the bearing portion.

9. A manufacturing method for manufacturing a cartridge detachably attachable to an apparatus main body of an image forming apparatus, the manufacturing method comprising:
a manufacturing step of manufacturing the image bearing unit according to the manufacturing method for manufacturing the image bearing unit according to claim 8 ; and
a developing-unit attaching step of attaching the developing unit or a developing unit different from the developing unit to the first engaged portion.

10. The manufacturing method according to claim 9 , further comprising a repairing step of attaching, to a portion where at least a part of the cover portion is removed, a repairing member that covers at least a part of the projecting portion.

11. The manufacturing method according to claim 9 , further comprising a second deforming step of deforming the supporting member, wherein
the developing-unit attaching step is performed in a state in which the supporting member is deformed in the second deforming step.

12. The manufacturing method according to claim 11 , further comprising a deformation releasing step of releasing the deformation of the supporting member after the developing-unit attaching step is performed.

13. A manufacturing method for manufacturing a cartridge detachably attachable to an apparatus main body of an image forming apparatus, the manufacturing method comprising:
a manufacturing step of manufacturing the image bearing unit according to the manufacturing method for manufacturing the image bearing unit according to claim 1 ; and
a developing-unit attaching step of attaching the developing unit or a developing unit different from the developing unit to the first engaged portion.

14. The manufacturing method according to claim 13 , further comprising a repairing step of attaching, to a portion where at least a part of the cover portion is removed, a repairing member that covers at least a part of the projecting portion.

15. The manufacturing method according to claim 13 , further comprising a second deforming step of deforming the supporting member, wherein
the developing-unit attaching step is performed in a state in which the supporting member is deformed in the second deforming step.

16. The manufacturing method according to claim 15 , further comprising a deformation releasing step of releasing the deformation of the supporting member after the developing-unit attaching step is performed.

Assignees

• Canon Kk

Inventors

• Horikawa Tadashi
• Murakami Ryuta
• Numata Tetsuya
• Makiguchi Daisuke
• Matsumaru Naoki

Classifications

• G03G21/1825

  Pivotable subunit connection · CPC title

• G03G21/181 Primary

  Manufacturing or assembling, recycling, reuse, transportation, packaging or storage · CPC title

• G03G2215/00987

  Remanufacturing, i.e. reusing or recycling parts of the image forming apparatus · CPC title

• G03G15/0806

  on a donor element, e.g. belt, roller (complete developer unit G03G15/0896) · CPC title

• G03G21/1821

  means for connecting the different parts of the process cartridge, e.g. attachment, positioning of parts with each other, pressure/distance regulation (G03G21/1825 takes precedence) · CPC title