CARTRIDGE, UNIT, AND METHOD FOR MANUFACTURING THE SAME

• US 20160185036A1
• Filed: 12/22/2015
• Published: 06/30/2016
• Est. Priority Date: 12/25/2014
• Status: Abandoned Application

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Yamasaki, Akiko, Yamasaki, Toshiteru, Suzuki, Akira, Hoshi, Nobuharu
• Application Number:
  US14/979,097
• Publication Number:
  US 20160185036A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B29C 2793/0009 Cutting out
• CPC Class Codes: B29C 45/0053 combined with a final operation, e.g. shaping injection-compression moulding B29C45/561
• CPC Class Codes: B29C 45/14 incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles B29C45/1671 takes precedence
• CPC Class Codes: B29C 65/1616 Near infrared radiation [NIR], e.g. by YAG lasers
• CPC Class Codes: B29C 65/1635 at least passing through one of the parts to be joined, i.e. laser transmission welding
• CPC Class Codes: B29C 65/1654 scanning at least one of the parts to be joined
• CPC Class Codes: B29C 65/1677 making use of an absorber or impact modifier
• CPC Class Codes: B29C 65/44 Joining a heated non plastics element to a plastics element
• CPC Class Codes: B29C 66/112 Single lapped joints
• CPC Class Codes: B29C 66/131 Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
• CPC Class Codes: B29C 66/5346 said single elements being substantially flat
• CPC Class Codes: B29C 66/71 characterised by the composition of the plastics material of the parts to be joined welding bar compositions B29C65/125
• CPC Class Codes: B29C 66/712 the composition of one of the parts to be joined being different from the composition of the other part
• CPC Class Codes: B29C 66/8122 characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
• CPC Class Codes: B29C 66/81267 Transparent to electromagnetic radiation, e.g. to visible light
• CPC Class Codes: B29C 66/8322 Joining or pressing tools reciprocating along one axis
• CPC Class Codes: B29C 66/919 characterised by specific temperature, heat or thermal flux values or ranges specific electrical resistance values B29C66/81262
• CPC Class Codes: B29C 66/939 characterised by specific speed values or ranges
• CPC Class Codes: B29K 2021/003 Thermoplastic elastomers
• CPC Class Codes: B29K 2025/04 Polymers of styrene
• CPC Class Codes: B29K 2025/06 : PS, i.e. polystyrene
• CPC Class Codes: B29K 2025/08 : Copolymers of styrene, e.g. AS or SAN, i.e. acrylonitrile styrene B29K2055/02 takes precedence
• CPC Class Codes: B29K 2067/00 : Use of polyesters or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2909/08 : Glass
• CPC Class Codes: B29L 2031/764 : Photographic equipment or accessories memory cards B29L2017/006
• CPC Class Codes: B29L 2031/7678 : Ink or toner cartridges
• CPC Class Codes: G03G 21/0011 : using a blade; Details of cleaning blades, e.g. blade shape, layer forming
• CPC Class Codes: G03G 21/12 : Toner waste containers
• CPC Class Codes: G03G 21/181 : Manufacturing or assembling, recycling, reuse, transportation, packaging or storage
• CPC Class Codes: G03G 21/1832 : Shielding members, shutter, e.g. light, heat shielding, prevention of toner scattering

Abstract

A cartridge and unit removably attachable to an image forming apparatus, allowing a member for securing a sheet member to be easily mounted with high precision, and capable of preventing leakage of a developing agent and a method for manufacturing the same are provided.

A cleaning unit 2a includes a frame 24 including a waste-toner chamber 30 storing a developing agent eliminated from the image bearing member 21, an end-portion seal member 26a disposed on the frame 24 and being in contact with the image bearing member 21, a scooping sheet 15 including an end arranged on the end-portion seal member 26a and used for preventing the developing agent in the waste-toner chamber 30 from leaking through an area between the frame 24 and the image bearing member 21, and a resin member 10 for securing the scooping sheet 15 to the frame and being injection-molded to the frame 24. The resin forming the resin member 10 is made to enter the end-portion seal member 26a, and the end-portion seal member 26a and the resin member 10 are integrated.

Claims

1. A unit manufacturing method for manufacturing a unit, the unit including

a frame including a developing-agent containing portion,

a rotary member rotatably disposed on the frame,

an end-portion seal member disposed on the frame and being in contact with an end portion in a lengthwise direction of the rotary member,

a thin plate member disposed along the lengthwise direction and including an end in a direction that crosses the lengthwise direction, the end being arranged on the rotary member, and

a resin member that secures the thin plate member to the frame and that is injection-molded to the frame,

the unit manufacturing method comprising:

a first step of arranging the end-portion seal member on the frame;

a second step of making a mold come into contact with the frame, injection-molding resin into a space defined by the frame, the end-portion seal member, and the mold, and forming the resin member;

a third step of placing the thin plate member on the resin member and bonding the thin plate member to the frame by melting the resin member; and

a fourth step of securing the rotary member to the frame,

wherein in the second step, resin forming the resin member is made to enter the end-portion seal member, and the end-portion seal member and the resin member are integrated.

2. The unit manufacturing method according to claim 1, wherein the end-portion seal member includes a porous portion,

in the second step, the resin forming the resin member is made to enter the porous portion, and the end-portion seal member and the resin member are integrated.

3. The unit manufacturing method according to claim 1, wherein the end-portion seal member includes a fibrous portion,

in the second step, the resin forming the resin member is made to enter the fibrous portion, and the end-portion seal member and the resin member are integrated.

4. The unit manufacturing method according to claim 1, wherein in the third step, the thin plate member is bonded to the end-portion seal member by the resin member.

5. The unit manufacturing method according to claim 1, wherein the resin member comprises thermoplastic elastomer resin.

6. The unit manufacturing method for manufacturing the unit according to claim 1, wherein the resin member contains carbon black.

7. The unit manufacturing method according to claim 1, wherein the rotary member comprises an image bearing member,

the developing-agent containing portion comprises a waste-toner chamber that stores a developing agent eliminated from the image bearing member, and

the thin plate member comprises a scooping sheet for preventing the developing agent from leaking from the waste-toner chamber.

8. A cartridge manufacturing method for manufacturing a cartridge removably attachable to a main body of an image forming apparatus, the cartridge manufacturing method including the unit manufacturing method according to claim 7.

9. The unit manufacturing method according to claim 1, wherein the rotary member comprises a developing-agent bearing member, and

the thin plate member comprises a blow-off preventing sheet for preventing the developing agent from leaking from the developing-agent containing portion.

10. A cartridge manufacturing method for manufacturing a cartridge removably attachable to a main body of an image forming apparatus, the cartridge manufacturing method including the unit manufacturing method according to claim 9.