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Fixing roller

A technology of fixing rollers and porous materials, applied in the field of fixing rollers, can solve the problems of deterioration of durability of fixing rollers, uneven unit size, uncertain unit shapes, etc., and achieves the effects of improving reliability, preventing cracks, and improving reliability.

Active Publication Date: 2006-09-13
SYNZTEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specific problems exist on this silicon sponge, such as non-uniform cell size and indeterminate cell shape
Therefore, in the fixing roller manufactured by the method disclosed in Patent Publication 1, there is a risk of cell collapse in the region deformed due to external force.
If unit collapse occurs, the durability of the fuser roller will be deteriorated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0090] In Invention Example 1, liquid silicone rubber (trade name: KE-1353) produced by Shin-Etsu Chemical Co., Ltd. was used as the liquid silicone rubber material. In this liquid silicone rubber, polysiloxane containing active hydrogen (viscosity: 16Pa·S) and polysiloxane containing vinyl (viscosity: 15Pa·S) are provided in separate packages, and polysiloxane containing vinyl The oxane has a catalytic amount of platinum catalyst added thereto. Hereinafter, the former and the latter are referred to as "silicone rubber agent A" and "silicone rubber agent B", respectively. The polysiloxane containing active hydrogen has the chemical structure of formula (2), where each R 4 For methyl. Vinyl-containing polysiloxane has a chemical structure of formula (1), where each R 1 for vinyl, each R 2 For methyl. In addition, KF-618 (HLB: 11; hereinafter referred to as "dispersion stabilizer I") and KF-6015 (HLB: 4; hereinafter referred to as "dispersion stabilizer II") were used as di...

example 2

[0095] In Invention Example 2, liquid silicone rubber (trade name: DY35-7002) produced by Toray Dow Corning Co., Ltd. was used as the liquid silicone rubber material. In this liquid silicone rubber, active hydrogen-containing polysiloxane (viscosity: 15Pa·S) and vinyl-containing polysiloxane (viscosity: 7.5Pa·S) are provided in separate packages, and vinyl-containing polysiloxane The siloxane has a catalytic amount of platinum catalyst added thereto. Hereinafter, the former and the latter are referred to as "silicone rubber agent A" and "silicone rubber agent B", respectively. The polysiloxane containing active hydrogen has the chemical structure of formula (2), where each R 4 For methyl. Vinyl-containing polysiloxane has a chemical structure of formula (1), where each R 1 for vinyl, each R 2 For methyl. In addition, the aforementioned dispersion stabilizer I and dispersion stabilizer II were used as the dispersion stabilizer. The silicone elastomer itself obtained from ...

example 3

[0100] In Inventive Example 3, the compositions A and B used in Inventive Example 3 were mixed together. The obtained composition was stirred by means of a hand mixer for 3 minutes, while adding 10 parts by weight of water, and stirred for a further 2 minutes. The obtained composition was stirred with a hand mixer while gradually adding 90 parts by weight of water to obtain an emulsifier.

[0101]The obtained emulsifier was used in the same manner as Inventive Example 1 to prepare a silicon elastomer porous material test piece, and the cell size was measured to determine the closed cell ratio. The results are shown in Table 1 below. As shown by the test results, the specific gravity of the porous elastomer obtained in Invention Example 1 was 0.53, and the hardness (Asher-C) was 58. figure 2 A SEM photograph of the cut surface of the test piece is shown (magnification: ×100). In this way, a closed cell porous material with very fine / uniform cell size is obtained.

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Abstract

Disclosed is a fixing roller which comprises a core 16 , a porous material layer 22 disposed in surrounding relation to an outer peripheral surface of the core 16 , and a thin-walled metal sleeve 26 covering an outer peripheral surface of the porous material layer 22 . The porous material layer 22 comprises a closed cell-type silicone elastomer. The present invention provides a fixing roller capable of ensuring enhanced durability and maintaining a usable state over long periods under the condition of being actually driven and rotated.

Description

technical field [0001] The present invention relates to a fixing roller comprising a porous material layer covering the outer peripheral surface of the center and a thin-walled metal sleeve covering the outer peripheral surface of the porous material layer. Background technique [0002] In an image forming apparatus such as a copying machine, a printer, or a facsimile machine, a fixing device is used to image a target object (transfer member, unfixed toner formed / supported on a photosensitive sheet, dielectric-coated sheet (dielectric-coated sheet, etc.) is heated / pressed / fixed, and the fixing device has been known as a so-called two-roller device, which includes Heat fuser and squeeze rollers. [0003] In connection with this type of fixing roller, as described in Japanese Unexamined Patent Publication No. 2004-53924 (Patent Publication 1), the assignee of this application provides "A method of manufacturing a fixing roller, It comprises: firstly, preparing a porous body ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/20
Inventor 小川润池田笃
Owner SYNZTEC
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