Paper sheet multi-feed preventing member

a multi-feed and preventing member technology, applied in the direction of article separation, thin material processing, transportation and packaging, etc., can solve the problems of insufficient separation function, limited paper sheets which the separation pad can separate, and various kinds of paper sheets cannot be reliably separated, etc., to achieve excellent separation function, not easily worn away, and hardly causes vibration and screeching. , the effect of excellent separation function

Inactive Publication Date: 2010-11-25
SUMITOMO RUBBER IND LTD
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0017]An object of the present invention is to provide a separation pad, that is, a paper sheet multi-feed preventing member which has a planar shape and has an excellent separating function, and accordingly, can adapt to various kinds of paper sheets, and does not easily wear away, and hardly causes chatter vibration and screeching, etc., without greatly complicating the structure as compared with the conventional separation pad.

Problems solved by technology

However, a conventional separation pad which is entirely made of an elastomer such as rubber integrally is small in contact length (nipping width) in the paper sheet feed direction with the paper feed roller, and easily slips from a paper sheet, so that the separating function described above cannot be sufficiently obtained.
Particularly, the kinds of paper sheets which the separation pad can separate are limited, and various kinds of paper sheets cannot be reliably separated.
Further, the conventional separation pad is easily worn away, and the thickness is reduced in a short time due to this wear, and further, the separating function is deteriorated.
One of the causes of easy wear of the separation pad is frequent friction with paper sheets caused by slipping.
The conventional separation pad has a small nipping width as described above, and a contact force caused by contact with the paper feed roller is easily concentrated at a comparatively narrow area, so that the load to be applied to the separation pad by the contact is great, and this is one of the causes of easy wear.
Further, the conventional separation pad easily causes chatter vibration due to friction with a paper sheet or a phenomenon called screeching that is an abnormal sound in conjunction with the friction.
The cause of these is also the small nipping width which causes a contact force of contact with the paper feed roller to easily concentrate at a narrow area and increases the load to be applied to the separation pad due to the contact.

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
  • Paper sheet multi-feed preventing member
  • Paper sheet multi-feed preventing member

Examples

Experimental program
Comparison scheme
Effect test

example 1

Conventional Example 1

[0103]By molding the same kneaded material containing the ingredients shown in Table 1 as the outer layer of Example 1 into a sheet shape with a thickness of 2.0 millimeters, a non-porous paper sheet multi-feed preventing member having a single-layer structure was formed.

[0104]The type A durometer hardness of a measuring sample prepared by using the kneaded material forming the paper sheet multi-feed preventing member was A89 / S as described in Example 1. The friction coefficient was 0.5.

example 2

Conventional Example 2

[0105]By molding the same kneaded material containing the ingredients shown in Table 5 as the outer layer of Example 3 into a sheet shape with a thickness of 2.0 millimeters and vulcanizing it, a non-porous paper sheet multi-feed preventing member having a single-layer structure was formed.

[0106]The type A durometer hardness of a measuring sample prepared by using the kneaded material forming the paper sheet multi-feed preventing member was A90 / S as described in Example 3. The friction coefficient was 0.7.

example 3

Conventional Example 3

[0107]A non-porous paper sheet multi-feed preventing member having a thickness of 2.0 millimeters and a single-layer structure was formed in the same manner as in Conventional example 2 except that the amount of paraffin oil was set to 10 parts by mass as shown in Table 5.

[0108]The type A durometer hardness of a measuring sample prepared by using the kneaded material forming the paper sheet multi-feed preventing member was measured in the same manner as in Example 1, and the result was A75 / S. The friction coefficient was 1.0.

TABLE 5Parts by massConventionalConventionalIngredientexample 2example 3EPDM7070Paraffin oil3010Polypropylene3030Styrenic thermoplastic elastomer2020Crosslinking agent8.48.4Carbon black11

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

No PUM Login to view more

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

BACKGROUND OF THE INVENTION[0001]The present invention relates to a paper sheet multi-feed preventing member having a planar shape, which is installed and used in a paper feed mechanism, etc., of a laser beam printer, etc., for separating a plurality of stacked paper sheets and supplying them to the laser beam printer, etc., one by one.[0002]For example, in a paper cassette or a paper feed tray, etc., of a laser beam printer (hereinafter, abbreviated to “LBP” in some cases), a paper feed mechanism for preventing erroneous feeding (multi-feed) of two or more paper sheets, stacked and accommodated in the paper cassette or paper feed tray, etc., while overlapping each other is provided. The paper feed mechanism usually includes a paper feed roller at least the outer peripheral surface of which is made of an elastomer such as rubber, and a paper sheet multi-feed preventing member in contact with the outer peripheral surface of the paper feed roller.[0003]The paper feed mechanism operate...

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(United States)
IPC IPC(8): B65H3/00B65H5/00
CPCB65H3/5223B65H2404/55B65H2404/532
Inventor MINE, AKIHIROYOSHIZATO, MASAHIRONISHIMORI, HIROKAZUHIRAI, TOSHIYUKIHANYU, ATSUSHI
Owner SUMITOMO RUBBER IND LTD
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