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Liquid silicone rubber mixture, and electrophotographic member and fixing device

一种液态硅橡胶、电子照相的技术，应用在电记录术、应用电荷图形的电记录工艺、应用电荷图形的电记录工艺的设备等方向，能够解决加压辊硬度降低、不充分显示作用等问题

Active Publication Date: 2018-11-13
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, as a result of further studies by the present inventors, it was found that even in the elastic layer formed by using a liquid silicone rubber mixture containing a vaporized component, the effect (A) or (B) is not sufficiently exhibited, and therefore , for example, the hardness of the pressure roller decreases with its use in some cases

Method used

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  • Liquid silicone rubber mixture, and electrophotographic member and fixing device
  • Liquid silicone rubber mixture, and electrophotographic member and fixing device
  • Liquid silicone rubber mixture, and electrophotographic member and fixing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0188] 1. Preparation of Liquid Silicone Rubber Mixture

[0189] The silicone rubber stock solution a was blended with materials whose kinds and amounts (amounts relative to 100 parts by mass of the liquid silicone rubber mixture) are shown in Table 3 below. Thus, the liquid silicone rubber mixture a-1 according to the present disclosure was obtained. An autorotation-revolution type mixer (product name: ARV-3000MA, manufactured by Thinky Corporation) was used for blending, and the stock solution and materials were mixed and stirred for 2 minutes at a revolution speed of 600 rpm and an autorotation speed of 450 rpm. Hollow particles corresponding to component (4) were used after being expanded by heating in an electric furnace at 150° C. for 20 minutes in advance.

[0190] 2. Production of components for electrophotography

[0191] A fluororesin (PFA) tube (manufactured by Kurabo Industries Ltd., product name: KURANFLON-LT) with an outer diameter of 20 mm and a thickness of 3...

Embodiment 2～10

[0196] Except using the silicone rubber stock solution a; Obtained in the same manner as in Example 1. In addition, members for electrophotography A-2 to A-10 were obtained by forming the mixtures into members for electrophotography under the same conditions as those of Example 1.

Embodiment 11 and 12

[0198] Except using silicone rubber stock solution b; Obtained in the same manner as in liquid silicone rubber mixture 1 according to example 1. In addition, members B-1 and B-2 for electrophotography were obtained in the same manner as member A-1 for electrophotography according to Example 1, respectively.

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Abstract

The invention relates to a liquid silicone rubber mixture, an electrophotographic member and a fixing device. There is provided a liquid silicone rubber mixture, including following components (1) to(6): (1) an organopolysiloxane having two or more unsaturated aliphatic groups in a molecule thereof; (2) an organohydrogenpolysiloxane having two or more hydrogen atoms bonded to a silicon atom in amolecule thereof; (3) a hydrosilylation catalyst; (4) hollow particles each having a layer containing a thermoplastic resin as a shell; (5) a compound having at least one selected from the group consisting of a hydroxyl group and an ether bond in a molecule thereof, and having a sum of a number of the hydroxyl group and a number of the ether bond of two or more; and (6) a polycarboxylic acid.

Description

technical field [0001] The present disclosure relates to a fixing device of an electrophotographic image forming apparatus such as an electrophotographic copier or an electrophotographic printer, a member for electrophotography used as a fixing member of the fixing device, and a liquid silicone rubber compound for producing a member for electrophotography. Background technique [0002] In an electrophotographic image forming apparatus, for example, the following fixing units (I) and (II) are known as on-demand heating fixing units: [0003] (I) A fixing unit including a ceramic heater as a heating body arranged in a film-like rotating body and a pressure roller configured to form a nip portion with the ceramic heater via the film-like rotating body, the fixing unit being configured to heating the unfixed toner image on the recording material with a rotating body heated by a ceramic heater in the nip portion; and [0004] (II) A fixing unit including a film-shaped or roller-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/05C08K5/092G03G15/20
CPCC08L83/04G03G15/206C08L2205/03C08L2205/025C08K5/092C08G77/12C08G77/20C08L83/00C08K5/56C08K7/22C08K5/06G03G5/078C08L67/00C08L83/10G03G2215/2051G03G15/2057
Inventor 榊原启之松中胜久
Owner CANON KK