Conductive rubber roller

A rubber roller, rubber technology, applied in the field of transfer rollers of transfer components, can solve the problems of small environment dependence, difficult to achieve low resistance, etc.

Inactive Publication Date: 2006-11-15
CANON KK
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, low resistance and little environmental dependence are dif...

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1 and comparative example 1-1 to 1-6

[0105] The obtained results are presented together in Table 1.

[0106] As shown in table 1, find out from embodiment 1-1 and comparative example 1-1 to 1-5: ethylene oxide-propylene oxide-allyl glycidyl ether terpolymer when it is required in the present invention It is suitable when within the range. More specifically, in Comparative Example 1-1, in which the melting peak temperature was higher and the melting enthalpy change ΔH was larger than those within the range of the present invention and the copolymerization ratio of allyl glycidyl ether was smaller than the range of the present invention, Ethylene oxide has such a high crystallinity that it brings about a small resistivity lowering effect. Meanwhile, since the copolymerization ratio of allyl glycidyl ether is small, the obtained roll has great environmental dependence and poor photosensitive member stain resistance. In addition, in Comparative Example 1-2, in which the melting peak temperature is lower and the mel...

Embodiment 2-1 to 2-4 and comparative example 2-1

[0109] The obtained test results are given in Table 2 together.

[0110] As shown in Table 2, it can be seen from Examples 2-1 to 2-4 that the mixing amount of the ethylene oxide-propylene oxide-allyl glycidyl ether terpolymer used in the present invention is preferably 5 to 20 parts by mass. More specifically, in Examples 2-4 in which the blending amount thereof was greater than 20 parts by mass, the obtained conductive rubber roller showed large environmental dependence.

[0111] It can also be seen that compared with Example 2-3, Comparative Example 2-1, which is the resistance of the conductive rubber roller without mixing any ethylene oxide-propylene oxide-allyl glycidyl ether terpolymer The conductive rubber roller controlled only with acrylonitrile-butadiene rubber and epichlorohydrin-based rubber showed a higher durability than that of the ethylene oxide-propylene oxide-allyl glycidyl ether ternary compound according to the present invention. The difference between t...

Embodiment 3-1 and comparative example 3-1

[0113] The obtained test results are given in Table 3 together.

[0114] As shown in Table 3, it is seen from Example 3-1 and Comparative Example 3-1 that the rubber composition used in the present invention more preferably contains an ion conductive agent. It was seen that Example 3-1, which was the same as Example 1-1 except for mixing 1 part by mass of the ion-conducting agent, had achieved low resistivity more effectively while retaining the small environmental dependence obtained in Example 1-1. In addition, no problem of contamination of the photosensitive member was found. In contrast, for Comparative Example 3-1, in which 1 part by mass of an ion-conducting agent was mixed into a rubber composition using an ethylene oxide-propylene oxide-allyl glycidyl ether terpolymer outside the scope of the present invention Among them, the effect of lowering the resistivity is insufficient, while the obtained roll has a large environmental dependence and further causes contaminati...

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

PropertyMeasurementUnit
Iodine adsorption valueaaaaaaaaaa
Iodine adsorption valueaaaaaaaaaa
Absorbanceaaaaaaaaaa
Login to view more

Abstract

A conductive rubber roller comprising a conductive core material and provided thereon a rubber layer; the rubber layer being formed by using a rubber composition containing as rubber components at least a polar rubber and an ethylene oxide-propylene oxide-allyl glycidyl ether terpolymer; the ethylene oxide-propylene oxide-allyl glycidyl ether terpolymer having a melt peak temperature of from 20 to 30 DEG C. and a melt enthalpy change DeltaH of from 40 to 70 mJ/mg as measured with a differential scanning calorimeter; and the allyl glycidyl ether in the ethylene oxide-propylene oxide-allyl glycidyl ether terpolymer being in a copolymerization ratio of from more than 10 mol % to 20 mol % or less.

Description

technical field [0001] The present invention relates to a conductive rubber roller for use in an image forming apparatus such as an electrophotographic copying apparatus, a printing machine, an electrostatic recording apparatus, and more particularly to a conductive rubber roller for use, for example, by means of which a transferable image based on a toner image is transferred to a recording apparatus. A transfer roller of a transfer assembly on a medium such as paper; the toner image is formed by an image forming means such as an electrophotographic process or an electrostatic recording process and remains on an image bearing member such as an electrostatic photosensitive member. Background technique [0002] In image forming devices such as electrophotographic copying devices and electrostatic recording devices, a contact charging system is common in which a conductive rubber roller, to which a voltage is kept applied, is pressed against the surface of an electrostatic phot...

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
IPC IPC(8): G03G15/02G03G15/16
Inventor 浦野龙太梅木惠理香小山直树
Owner CANON KK
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap