Unlock instant, AI-driven research and patent intelligence for your innovation.

Developer carrying member, electrophotographic process cartridge, and electrophotographic image forming apparatus

A developer carrier and component technology, which is applied to the equipment of the electric recording process using the charge pattern, thin material processing, and the electric recording process using the charge pattern, etc., can solve the problems of excessive stress and unfavorable images

Active Publication Date: 2019-05-07
CANON KK
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When this condition continues, the toner may be fixed (filmed) to the surface of the developing member to have an adverse effect on the image due to excessive stress from other contact members

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Developer carrying member, electrophotographic process cartridge, and electrophotographic image forming apparatus
  • Developer carrying member, electrophotographic process cartridge, and electrophotographic image forming apparatus
  • Developer carrying member, electrophotographic process cartridge, and electrophotographic image forming apparatus

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0107] (preparation of matrix)

[0108] A product obtained by coating and baking a primer (trade name: DY35-051; manufactured by Dow Corning Toray Co., Ltd.) on a mandrel made of SUS304 and having a diameter of 6 mm was prepared as a substrate.

[0109] (production of elastic layer)

[0110] The base prepared as above was placed in a mold, and then an additive type silicone rubber composition obtained by mixing the following materials was injected into the cavity formed in the mold. Subsequently, the mold was heated to vulcanize and cure the silicone rubber at 150° C. for 15 minutes, and then the cured product was removed from the mold. After that, the curing reaction was completed by further heating the resultant at 180° C. for 1 hour. Therefore, an elastic layer having a diameter of 12 mm was formed on the outer periphery of the base body.

[0111] (Synthesis of polyether diol A-1)

[0112]In the reaction vessel, a mixture (molar mixing ratio: 80 / 20) of 230.7 g (3.2 mol)...

Embodiment 1

[0143] A method of manufacturing a roller-shaped developer carrying member (hereinafter sometimes referred to as a "developing roller") according to the present invention will now be described.

[0144] 5.9 parts by mass of acrylic polyol B-1, 137.6 parts by mass of isocyanate group-terminated prepolymer C-1, and carbon black MA230 (trade name, manufactured by Mitsubishi Chemical Corporation) was mixed with 100 parts by mass of acrylic polyol A-1. The mixture was dissolved in methyl ethyl ketone, followed by mixing and uniformly dispersing with a sand mill, thereby providing Dispersion Liquid 1.

[0145]As resin particles for adjusting surface roughness, polyurethane resin particles (trade name: Dynamic Beads UCN-5150D; manufactured by Dainichiseika Color & Chemicals Mfg. Co., Ltd.) were added to the dispersion in an amount of 30 parts by mass relative to the resin component. solution 1, followed by stirring with a stirring motor for 10 minutes. Thus, the paint 1 for surface...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Provided are a developer carrying member, and a process cartridge and an electrophotographic apparatus using the developer carrying member, the developer carrying member including a substrate, an elastic layer, and a surface layer covering a surface of the elastic layer in which the surface layer contains a modified acrylic resin, and the modified acrylic resin has a constituent unit represented by the following structural formula (1). (R1 represents an alkyl group having 1 to 3 carbon atoms; U represents a urethane resin having, between two adjacent urethane bonds, a structure represented by the following structural formula (2), and at least one of structure selected from a structure represented by the following structural formula (3) and a structure represented by the following structural formula (4); and L represents a divalent linking group containing an ester bond (—O—C(═O)—)).

Description

technical field [0001] The present invention relates to a developer carrying member for an electrophotographic image forming apparatus, and an electrophotographic process cartridge and an electrophotographic image forming apparatus using the developer carrying member. Background technique [0002] In an electrophotographic image forming apparatus, a photosensitive member is charged by a charging unit, and an electrostatic latent image is formed on the photosensitive member with laser light. The developer (hereinafter sometimes referred to as "toner") in the developing container is then conveyed through the developing member, and the electrostatic latent image on the photosensitive member is developed by the toner at the portion where the photosensitive member and the developing member are in close contact with each other. After that, the toner on the photosensitive member is transferred to the recording sheet by a transfer unit and fixed to the recording sheet with heat and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/08
CPCG03G15/0818Y10T428/31504
Inventor 小柳崇中村实都留诚司长冈一聪宫宇地佑人
Owner CANON KK