Connecting method of resin material molded product, process cartridge and assembling method of process cartridge
AssigneeCanon Kabushiki Kaisha
InventorsAkira Suzuki, Kenshiro Abe, Tadayuki Tsuda, Shinichi Sasaki, Shigeo Miyabe, Kouichi Hiratsuka
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Abstract
A bonding method for bonding molded resin products, includes the step of bonding a first one of the molded resin products and a second one of the molded resin products by injecting resin material through a resin material injection path to a bonding portion therebetween, wherein the resin material injection path is formed in one of or both of the first resin material molded product and the second resin material molded product.
Claims69
A bonding method for bonding first and second molded resin products, comprising the steps of:
- forming a resin material injection path in one of or both of said first resin material molded product and said second resin material molded product;
- injecting resin material through the resin material injection path to a bonding portion between the first and second molded resin products;
- and
- wherein said resin material injection path has a larger cross-sectional area in an upstream side than in a downstream side with respect to a direction of injection of the resin material.
A bonding method for bonding molded resin products, comprising:
- (a) a first molding step of forming a first resin material molded product by a first metal mold;
- (b) a second molding step for forming a second resin material molded product by a second metal mold;
- (c) a positioning step of placing said first resin material molded product and said second resin material molded product in a third connecting member which is different from said first metal mold and second metal mold and positioning bonding portions of said first resin material molded product and said second resin material molded product;
- and
- (d) a bonding step of bonding said first resin material molded product and second resin material molded product with each other by injecting a resin material through a resin material injection path to a bonding portion between said first resin material molded product and second resin material molded product, wherein said resin material injection path is provided in one of or both of said first resin material molded product and said second resin material molded product.
A process cartridge which is detachably mountable to a main assembly of an electrophotographic image forming apparatus, comprising:
- (a) an electrophotographic photosensitive member;
- (b) process means actable on said electrophotographic photosensitive member;
- (c) an outer wall constituted by bonding a first resin material molded product and a second resin material molded product by injecting resin material through a resin material injection path to a bonding portion between said first resin material molded product and said second resin material molded product, wherein said resin material injection path is provided in one of or both of said first resin material molded product and said second resin material molded product.
A process cartridge which is detachably mountable to a main assembly of an electrophotographic image forming apparatus, comprising:
- (a) an electrophotographic photosensitive drum:
- (b) a charge member for electrically charging said electrophotographic photosensitive drum;
- (c) a developing member for developing an electrostatic latent image formed on said electrophotographic photosensitive drum;
- (d) a drum frame for supporting said electrophotographic photosensitive drum and said charge member;
- (e) a developer frame having a developer accommodating portion for accommodating a developer for use by said developing member to develop the electrostatic latent image;
- (f) a first end cover bonded to said drum frame and said developer frame by injecting resin material through a resin material injection path to bonding portions between said first end cover and said drum frame and between said first end cover and said developer frame, wherein said first end cover is provided at one longitudinal end of said drum frame and said developer frame;
- and
- (g) a second end cover bonded to said drum frame and developer frame by injecting resin material through a resin material injection path to bonding portions between said first end cover and said drum frame and between said first end cover and said developer frame, wherein said second end cover is provided at the other longitudinal end of said drum frame and developer frame.
An assembling method of a process cartridge which is detachably mountable to a main assembly of an electrophotographic image forming apparatus, comprising:
- (a) a step of preparing an electrophotographic photosensitive member;
- (b) a step of preparing process means actable on said electrophotographic photosensitive member;
- and
- (c) a step of bonding a first resin material molded product and a second resin material molded product by injecting resin material through a resin material injection path to a bonding portion between said first resin material molded product and second resin material molded product, with said resin material injection path being provided in one of or both of said first resin material molded product and second resin material molded product.
An assembling method of a process cartridge which is detachably mountable to a main assembly of an electrophotographic image forming apparatus, comprising:
- (a) a step of preparing a drum frame for supporting an electrophotographic photosensitive drum and a charge member for electrically charging said electrophotographic photosensitive drum;
- (b) a step of preparing a developer frame having a developer accommodating portion for accommodating a developer for use by a developing member to develop the electrostatic latent image;
- (c) a first bonding step of bonding a first end cover to said drum frame and to said developer frame by injecting resin material through a resin material injection path to bonding portions between said first end cover and said drum frame and between said first end cover and said developer frame, wherein said first end cover is bonded to one longitudinal end of said drum frame and said developer frame;
- and
- (d) a second bonding step of bonding a second end cover to said drum frame and to developer frame by injecting resin material a resin material injection path to bonding portions between said second end cover and said drum frame and between said second end cover and said developer frame, wherein said second end cover is bonded to the other end of said drum frame and said developer frame.
Dependencies are inferred from the claim text.