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Electroconductive member, process cartridge, and electrophotography device

A conductive member, electrophotographic technology, which is applied in the direction of equipment, electrical components, corona discharge devices, etc. using the electric recording process of the charge pattern, can solve the problems of large resistance value environmental dependence, etc., and achieve the effect of small dependence

Active Publication Date: 2014-09-03
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, there is a problem that the resistance value has a large environmental dependence

Method used

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  • Electroconductive member, process cartridge, and electrophotography device
  • Electroconductive member, process cartridge, and electrophotography device
  • Electroconductive member, process cartridge, and electrophotography device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0166] (1. Preparation of Coating Liquid for Conductive Layer)

[0167] 0.735 g (0.988 mmol) of polyethylene glycol diglycidyl ether (mass average molecular weight: 744) and 0.057 g (0.384 mmol) of ethylene glycol bis(2) as a compound having a structure represented by formula (1)-1 - aminoethyl) ether, 1.169 g (0.835 mmol) of amine-terminal-modified NBR (trade name: ATBN 1300X35; available from Ube Industries, Ltd.) as a compound having a structure represented by formula (2)-1, and 0.039 g (2 parts by mass, based on 100 parts by mass of the binder resin) of the ion conductive agent was dissolved in isopropyl alcohol (IPA) to prepare "Coating Liquid 1" having a solid content of 27% by mass. In addition, n1 in formula (1)-1 is 13, and [m1:p1] in formula (2)-1 is 74:26.

[0168] (2. Coating of Coating Liquid for Conductive Layer)

[0169] The elastic roll A was immersed in the coating liquid 1 with the longitudinal direction thereof being set in the vertical direction to perfor...

Embodiment 2 to 47

[0190] Conductive rollers 2 to 2 were produced in the same manner as in Example 1, except that as the raw material of the conductive layer, those prescribed materials shown in Table 4 were used and the usage amounts of the materials were changed to the values ​​shown in Tables 5-1 to 5-4. 47 and evaluated as a charging roller. The evaluation results are shown in Tables 7-1 to 7-5.

Embodiment 48

[0192] A conductive member 48 was produced in the same manner as in Example 1 except that elastic roller A was changed to elastic roller B and evaluated as a charging roller. The evaluation results are shown in Table 7-5.

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PUM

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Abstract

Provided is an electroconductive member for electrophotography, whereby the occurrence of image defects due to electrical resistance is suppressed in both low-temperature, low-humidity environments and high-temperature, high-humidity environments, while effusion of ion conductor is minimized. An electroconductive member for electrophotography, having an electroconductive core body and an electroconductive layer provided on the external periphery of the core body, the electroconductive layer including a binder resin having a sulfo group or a quaternary ammonium base as an ion-exchange group, and an ion of opposite polarity to the ion-exchange group in the molecule thereof, the binder resin further having any structure selected from the group of structures represented by formulas (1)-1 to (1)-3, and any structure selected from the group of structures represented by formulas (2)-1 and (2);-2, and the binder resin having a molecular structure not forming a matrix domain in the electroconductive layer. In the formulae, n1, n2, and n3 are integers of 1 or greater, and m1, p1, m, and p2 are each independently integers of 1 or greater. The ratios [m1:p1] and [m2:p2] both range from 74:26 to 90:10.

Description

technical field [0001] The present invention relates to a conductive member, a process cartridge, and an electrophotographic apparatus. Background technique [0002] In electrophotographic image forming apparatuses, conductive members are used in various ways, for example, as charging rollers, developing rollers, and transfer rollers. For such conductive members it is preferred to have 10 3 Ω to 10 10 Resistance values ​​in the Ω range. Therefore, the conductivity of the conductive layer that the conductive member has is adjusted with a conductive agent. Here, the conductive agent can be roughly classified into an electronic conductive agent typified by carbon black and an ion conductive agent such as a quaternary ammonium salt compound. Each of these conductive agents has advantages and disadvantages. [0003] A conductive layer made conductive by an electron conductive agent such as carbon black can cause less variation in resistance value depending on the environment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/02G03G15/00G03G15/08G03G15/16
CPCG03G15/751G03G2215/00957
Inventor 渡边政浩山内一浩西冈悟菊池裕一
Owner CANON KK