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Paper sheet multi-feed preventing member

A technology for paper and components, which is applied in the field of paper overlap-feeding prevention components, and can solve the problems of easy wear, large load on separation pads, small width of clip marks, etc.

Inactive Publication Date: 2010-11-24
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In addition, the conventional separation pad has a small nip width as mentioned above, and the contact force due to the contact of the supply roller tends to be concentrated in a relatively narrow range, so the load applied to the separation pad by the above contact is large and it is easy to wear. one of the reasons
[0016] Furthermore, the above-mentioned conventional separation pad also has the problem that it is easy to vibrate by friction with the paper, or the phenomenon called "squealing" accompanied by abnormal sound occurs. The reason is also because the above-mentioned The width of the nip is small, and the contact force caused by the contact of the paper feed roller tends to be concentrated in a relatively narrow range, so the load applied to the separation pad by the contact is large.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] (outer layer)

[0087] As the outer layer, a non-porous sheet was used, that is, a polyester-based thermoplastic elastomer [PELPRENE (registered trademark) P40H manufactured by Toyobo Co., Ltd.] and carbon black (Tokai Carbon Co., Ltd. SEAST SO) was kneaded and molded into a sheet with a thickness of 0.4 mm to obtain a non-porous sheet.

[0088] Table 1

[0089] Element

parts by mass

Polyester thermoplastic elastomer

100

carbon black

1

[0090] In addition, a sample for measurement was prepared using the same kneaded product as above, and the A-type durometer hardness was measured at a temperature of 23 ± 1° C. and a relative humidity of 55 ± 1% using the measurement method specified in the above-mentioned JIS K6253: 2006. The result was: A89 / S.

[0091] In addition, using a surface property measuring instrument [Tribogear (registered trademark) model HEIDON (registered trademark)-14DR manufactured by Shinto Scientific Co.,...

Embodiment 2

[0101] As the inner layer, a non-porous sheet was used, which was molded into a sheet with a thickness of 1.45 mm and made vulcanization to obtain a sheet of non-porous body. As in the above-described Embodiment 1, a sheet overlap-feed preventing member having a thickness of 2.0 mm was formed.

[0102] A sample for measurement was prepared using the kneaded material forming the above-mentioned inner layer, and the above-mentioned characteristics were measured in the same manner as in Example 1. As a result, the A-type durometer hardness was A56 / S, the resilience was 13%, the compression set was 18%, and the vitrification The transition temperature Tg is -20°C, and the specific gravity is 1.2.

Embodiment 3

[0109] As the outer layer, use a non-porous sheet as follows, that is, mix EPDM [Sumitomo Chemical Co., Ltd. Esprene (registered trademark) E586], liquid paraffin [Idemitsu Kosan Co., Ltd.] in the ratio shown in Table 3. Diana Process Oil PW-380], polypropylene [NOVATEC (registered trademark) MG05ES manufactured by Nippon Polypropylene Co., Ltd.), styrene-based thermoplastic elastomer [SEPTON (registered trademark) HG252 manufactured by Kuraray Corporation], Joint agent [TACKROL (registered trademark) 250-III manufactured by Tianoka Chemical Industry Co., Ltd.] and carbon black (SEAST SO manufactured by Tokai Tanso Co., Ltd.), kneaded, formed into a sheet with a thickness of 0.4 mm and made vulcanization to obtain a sheet of non-porous body.

[0110] table 3

[0111] Element

parts by mass

EPDM

70

liquid paraffin

30

Polypropylene

30

Styrenic thermoplastic elastomer

20

crosslinking agent

84

carbon b...

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PUM

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Abstract

A paper sheet multi-feed preventing member 3 being planar includes an outer layer 8 which comes into contact with a paper sheet 5 and an inner layer 9 laminated on the outer layer 8, the inner layer 9 has a type A durometer hardness not less than A5 / S and not more than A60 / S, or an Asker-C hardness not less than C5 and not more than C50, and the outer layer 8 has a rubber hardness higher than that of the inner layer 9.

Description

technical field [0001] The present invention relates to a flat sheet overlapping-feed preventing member used to separate and feed a plurality of overlapping sheets to a laser printer or the like, and to be incorporated in a paper feeding mechanism of the laser printer or the like. Background technique [0002] For example, a paper feeding mechanism is provided on a paper feeding cassette or a paper feeding tray of a laser printer (hereinafter abbreviated as "LBP"), and the paper feeding mechanism is used to prevent overlapping storage on the above-mentioned paper feeding cassette or paper feeding tray. An error occurred in the sheets of paper, and two or more sheets were overlapped and sent out (multiple feeding). The paper feed mechanism generally includes a paper feed roller at least whose outer peripheral surface is formed of an elastic body such as rubber, and a sheet overlap-feed prevention member that abuts on the outer peripheral surface of the paper feed roller. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65H3/46
CPCB65H2404/532B65H3/5223B65H2404/55
Inventor 峯章弘吉里成弘西森浩一平井利幸羽生笃史
Owner SUMITOMO RUBBER IND LTD