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Electrophotographic belt and electrophotographic image forming apparatus

An electrophotography and conductive layer technology, which is applied to the equipment of the electric recording process using the charge pattern, the electric recording process using the charge pattern, and the electric recording technique, etc., which can solve the problem of the reduction of the adhesion of the base layer and the reduction of the adhesion of the conductive layer to the base layer , Conductive layer and base layer peeling and other issues

Pending Publication Date: 2020-11-17
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, when the conductive layer contains a large amount of electronic conductive agent, the content ratio of the binder resin in the conductive layer is relatively reduced, and the adhesion of the conductive layer to the base layer will be reduced accordingly.
The reduction of the adhesion of the conductive layer to the base layer will cause the peeling of the conductive layer and the base layer due to the long-term use of the intermediate transfer belt

Method used

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  • Electrophotographic belt and electrophotographic image forming apparatus
  • Electrophotographic belt and electrophotographic image forming apparatus
  • Electrophotographic belt and electrophotographic image forming apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] (formation of base)

[0102] The following raw materials were used to form the base layer.

[0103] · Polyethylene naphthalate (trade name: TEONEX TN8050SC, manufactured by TEIJIN LIMITED) as a polyester resin (hereinafter, referred to as "PE(1)")

[0104] · Polyetheresteramide (trade name: TPAE-10HP-10, manufactured by T&K TOKA Corporation) as a conductive agent (hereinafter, referred to as "PEEA")

[0105] Potassium perfluorobutane sulfonate (trade name: Eftop KFBS, manufactured by Mitsubishi Materials Electronic Chemicals Co., Ltd.) (hereinafter, referred to as "KFBS")

[0106] The melting point of PE(1) is 262°C.

[0107] PE (1), PEEA and KFBS are mixed with the ratio of 80 / 18 / 2 (mass %), then use twin-screw extruder (trade name: TEX30α, produced by The Japan Steel Works, LTD.) at 290 ℃ The mixture was melt-kneaded for 5 minutes to obtain a resin mixture composed of PE(1), PEEA and KFBS. The resulting resin mixture was pelletized with a cutter (trade name: FAN-C...

Embodiment 2

[0125]Except that dimethyl terephthalate was changed to dimethyl phthalate in the preparation of the binder resin for the conductive layer in Example 1, polyester (2) was prepared in the same manner as in Example 1 and Belt No. 2 for electrophotography was obtained. The obtained polyester (2) had a glass transition temperature of 68°C after measurement by DSC. The above evaluations 1 to 3 of the obtained tape No. 2 for electrophotography were performed.

Embodiment 3

[0127] In addition to using 129 parts by mass of dimethyl terephthalate and 129 parts by mass of dimethyl isophthalate in the preparation of the conductive layer binder resin in Example 1, and using 129 parts by mass of phthalate Polyester (3) was prepared in the same manner as in Example 1 except that dimethyl formate was substituted for dimethyl terephthalate and dimethyl isophthalate, and Tape No. 3 for electrophotography was obtained. The obtained polyester (3) had a glass transition temperature of 66°C after measurement by DSC. The above evaluations 1 to 3 of the obtained tape No. 3 for electrophotography were performed.

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Abstract

The invention relates to an electrophotographic belt and an electrophotographic image forming apparatus. Provided is an electrophotographic belt including a conductive layer having high adhesion to abase layer while maintaining high conductivity. The electrophotographic belt has a ring shape and includes a ring-shaped base layer including a polyester resin, and a conductive layer covering an inner surface of the base layer, the conductive layer including conductive particles and a binder resin, the binder resin includes a polyester resin having at least two monomer units of phthalic acid selected from the group consisting of terephthalic acid, phthalic acid, and isophthalic acid.

Description

technical field [0001] The present disclosure relates to an electrophotographic belt used in an electrophotographic image forming apparatus (hereinafter, referred to as “electrophotographic apparatus”) such as a copier or a printer, and an electrophotographic image forming apparatus. Background technique [0002] In an electrophotographic apparatus, an electrostatic charge image bearing member such as a photosensitive drum is charged, and the charged electrostatic charge image bearing member is exposed to light, thereby forming an electrostatic latent image. Thereafter, the electrostatic latent image is developed by the toner subjected to triboelectric charging, and the toner image is transferred and fixed onto a recording medium such as paper, thereby forming a desired image on the recording medium. [0003] As a transfer system of an electrophotographic apparatus, an intermediate transfer system in which an unfixed toner image on an electrostatically charged image bearing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/16
CPCG03G15/162G03G2215/1623
Inventor 滨名英一江川纪章内田光一
Owner CANON KK