Method of manufacturing a molded article having a conductive sheet adhered thereto

• US 10,331,076 B2
• Filed: 09/14/2017
• Issued: 06/25/2019
• Est. Priority Date: 07/12/2013
• Status: Active Grant

• Current Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Original Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Inventors: Nishino, Kosuke
• Primary Examiner(s): Lindsay, Jr., Walter L
• Assistant Examiner(s): Fadul, Philipmarcus T
• Application Number:
  US15/704,511
• Publication Number:
  US 20180004152A1
• Time in Patent Office: 649 Days
• Field of Search: 399111, 399222
• CPC Class Codes: G03G 21/181 Manufacturing or assembling, recycling, reuse, transportation, packaging or storage
• CPC Class Codes: G03G 21/1821 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

Abstract

A process cartridge including a first frame member molded by pouring a resin from a gate; a conductive sheet adhered integrally to a sheet adhering portion of the first frame member by molding of the resin; and a second frame member configured to define a toner storage portion by being coupled with the first frame member, wherein, the first frame member includes a bent portion at the sheet adhering portion, and a portion of the first frame member different in thickness is provided at an adjacent position to the adhering portion.

Claims

1. A method of manufacturing a molded article having a conductive sheet adhered thereto comprising:

inserting a conductive sheet between a first molding and a second molding;

forming a cavity by mating the first molding and the second molding; and

injecting a resin from a gate into the cavity,

wherein the first molding and/or the second molding includes a shape between a portion where the conductive sheet is inserted and the gate, the shape being configured to change a thickness of the cavity so as to reduce a difference in times of resin reaching the conductive sheet.

2. The method of manufacturing the molded article according to claim 1, wherein the portion includes a projecting shape formed in the first molding and/or the second molding.

3. The method of manufacturing the molded article according to claim 2, wherein the portion includes a depression adjacent to the projecting shape.

4. The method of manufacturing the molded article according to claim 2, wherein the shape is formed between the gate and a point of the conductive sheet closest to the gate.

5. The method of manufacturing the molded article according to claim 4, wherein a width of the shape is not less than 10 mm but not greater than 50 mm.

6. The method of manufacturing the molded article according to claim 5, wherein a projecting amount of the shape is not less than 0.1 mm but not greater than 0.5 mm.

7. The method of manufacturing the molded article according to claim 1, wherein the first molding and the second molding each include a shape for transferring a bent portion, and the conductive sheet is inserted into the shape for transferring the bent portion of the first molding or the second molding.

8. The method of manufacturing the molded article according to claim 1, wherein the shape is a depression shape formed in the first molding or the second molding.

9. The method of manufacturing the molded article according to claim 8, wherein the shape is formed between the gate and a point of the conductive sheet closest to the gate.

10. The method of manufacturing the molded article according to claim 9, wherein a width of the shape is not less than 10 mm but not greater than 40 mm.

11. The method of manufacturing the molded article according to claim 10, wherein a projecting amount of the shape is not less than 0.2 mm but not greater than 0.5 mm.

12. A process cartridge that includes, as a frame member, a molded article manufactured using the method of manufacturing the molded article according to claim 1.

13. An image forming apparatus to which the process cartridge according to claim 12 is attached.

14. A method of manufacturing a molded article having a conductive sheet adhered thereto comprising:

inserting a conductive sheet between a first molding and a second molding;

forming a cavity by mating the first molding and the second molding; and

injecting a resin from a plurality of gates into the cavity,

wherein the first molding and/or the second molding includes a plurality of shapes between a portion where the conductive sheet is inserted and the gates, the shapes being configured to change a thickness of the cavity so as to reduce the difference in times of resin reaching the conductive sheet.

15. A method of manufacturing the molded article having a conductive sheet adhered thereto, comprising

inserting a conductive sheet between a first molding and a second molding;

forming a cavity by mating the first molding and the second molding; and

injecting a resin from a plurality of gates into the cavity,

wherein the first molding and/or the second molding includes a plurality of shapes configured to change a thickness of the cavity,

wherein a first one of the plurality of shapes is formed between a first one of the plurality of gates and a first part of the conductive sheet closest to the first one of the plurality of gates,

wherein a second one of the plurality of shapes is formed between a second one of the plurality of gates and a second part of the conductive sheet closest to the second one of the plurality of gates, and

wherein the first one of the plurality of shapes and the second one of the plurality of shapes are separated and arranged along a direction parallel to a direction in which the first one of the plurality of gates and the second one of the plurality of gates are arranged.

16. The method of manufacturing the molded article according to claim 15, wherein the first molding and the second molding each include a shape for transferring a bent portion, and the conductive sheet is attached into the shape for transferring the bent portion of the first molding or the second molding.

17. A process cartridge that includes, as a frame member, a molded article manufactured using the method of manufacturing the molded article according to claim 15.