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

Transfer roller, and production method for the transfer roller

A manufacturing method and transfer roller technology, which can be applied to other household appliances, household components, applications, etc., can solve the problems of small rubber hardness, enlarged cell diameter, small foaming cells, etc., and achieve low rubber hardness, rubber Hardness and softness, the effect of small foaming cells

Inactive Publication Date: 2017-11-17
SUMITOMO RUBBER IND LTD
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, OBSH also functions as a cross-linking accelerator for rubber. Therefore, for example, when heating after molding, the cross-linking reaction of rubber proceeds before the foaming due to the decomposition of OBSH, and the gas generated by excessive decomposition does not easily pass through the diaphragm of rubber. Leaking out of the foam, more gas enters into each foam cell, and as a result, the cell diameter of the above-mentioned foam cells tends to increase
[0015] Therefore, when OBSH is used alone as a foaming agent, it is impossible to manufacture a transfer roller that can fully meet the requirements of recent years, and its rubber hardness is small and soft, and the foaming cells are smaller than the current situation.

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
  • Transfer roller, and production method for the transfer roller
  • Transfer roller, and production method for the transfer roller
  • Transfer roller, and production method for the transfer roller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0169] (Preparation of rubber composition)

[0170] As rubber, 30 parts by mass of GECO [HYDRIN (registered trademark) T3108 manufactured by Nippon Zeon Co., Ltd.], 10 parts by mass of EPDM [ESPRENE (registered trademark) 505A manufactured by Sumitomo Chemical Co., Ltd., non-oil-extended], and NBR were mixed. [Nipol (registered trademark) DN401LL manufactured by Nippon Zeon Co., Ltd., non-oil-extended, bound acrylonitrile amount: 18.0% (median value)] 60 parts by mass.

[0171] Then, 100 parts by mass of these rubbers were masticated using a Banbury mixer. At the same time, carbon black and hydrotalcites among the components shown in Table 1 below were first added and kneaded, and the remaining components were further added and mixed. Kneading was carried out to prepare a conductive rubber composition.

[0172] 【Table 1】

[0173] Element

parts by mass

Blowing agent OBSH

4

Sodium carbonate

1.5

carbon black

10

Hydrotalcites

...

Embodiment 2

[0189] A conductive rubber composition was prepared in the same manner as in Example 1 except that the amount of sodium bicarbonate was 4 parts by mass per 100 parts by mass of the total amount of rubber, and a transfer roller 1 was produced. The mixing ratio of sodium bicarbonate was 1 part by mass per 1 part by mass of OBSH.

Embodiment 3

[0191] A conductive rubber composition was prepared in the same manner as in Example 1 except that the amount of sodium bicarbonate was 9.5 parts by mass per 100 parts by mass of the total amount of rubber, and a transfer roller 1 was produced. The compounding ratio of sodium bicarbonate was 2.375 mass parts per 1 mass part of OBSH.

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
diameteraaaaaaaaaa
hardnessaaaaaaaaaa
hardnessaaaaaaaaaa
Login to View More

Abstract

An inventive transfer roller (1) is made of a foam formed from an electrically conductive rubber composition containing an electrically conductive rubber, a crosslinking component, and a foaming agent including OBSH and 0.25 to 2.5 parts by mass of sodium hydrogen carbonate based on 1 part by mass of OBSH, and has an Asker-C hardness of not lower than 25 DEG C and not higher than 35 DEG C and an average foam cell diameter of not greater than 120 [mu]m. Therefore, the transfer roller is flexible with a lower rubber hardness, and has smaller foam cell diameters. An inventive production method includes the steps of: forming the electrically conductive rubber composition into a tubular body; and maintaining the tubular body at a temperature of not lower than 120 DEG C. and not higher than 140 DEG C. to foam the rubber by a single-stage foaming process.

Description

technical field [0001] The present invention relates to a transfer roller and a manufacturing method thereof. Background technique [0002] In an image forming apparatus using electrophotography, such as a laser printer, electrostatic copier, plain paper facsimile apparatus, or their complexes, an image is generally formed on the surface of paper, such as paper or plastic film, through the following steps. [0003] First, the surface of a photoconductive photoreceptor is exposed while being charged in the same manner, and an electrostatic latent image corresponding to the formed image is formed on the surface (charging step→exposure step). [0004] Next, toner, which is fine colored particles, is brought into contact with the surface of the photoreceptor in a charged state with a predetermined potential in advance. Then, the toner selectively adheres to the surface of the photoreceptor according to the potential pattern of the electrostatic latent image, and the electrostat...

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 Applications(China)
IPC IPC(8): G03G15/16C08L71/02C08J9/08C08J9/10B29C48/09
CPCC08J9/08C08J9/105C08L71/02G03G15/162C08J2423/16C08J2203/18C08J2371/02C08J2203/04C08J2203/02C08L2312/00C08L2205/035C08L23/16C08L9/02C08L91/00C08K13/02C08K3/04C08K3/26C08K3/06G03G15/1685B29C48/001B29K2033/18B29L2031/767B29K2995/0005B29K2995/007B29K2507/04B29C48/09B29C48/0012B29C48/9105
Inventor 谷尾勇祐
Owner SUMITOMO RUBBER IND LTD