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Folding roller of paper processing apparatus

A technology for folding roller pairs and paper, which is applied in the direction of thin material handling, folding thin materials, transportation and packaging, etc., and can solve problems such as folding corners, increased thickness, poor delivery of folding rollers, etc.

Inactive Publication Date: 2009-03-04
KK TOSHIBA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, in the above-mentioned conventional Z-folding mechanism 100, in the case of multiple folding processes, the number of folds increases so that the thickness increases, so it is difficult for the paper to enter the folding roller pair accurately.
As a result, deviations in folding positions, poor feeding of folding rollers, wrinkles, knuckles, etc. may occur

Method used

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  • Folding roller of paper processing apparatus
  • Folding roller of paper processing apparatus
  • Folding roller of paper processing apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0036] figure 1 A schematic configuration of an electrophotographic digital copier equipped with the Z-fold mechanism 21 according to this embodiment is shown.

[0037] The digital copier has a housing 1 as its housing. A document table 3 made of transparent glass is provided on the upper surface of the housing 1, and a document supply unit 2 is provided thereon. The document supply unit 2 conveys a plurality of documents one by one to a predetermined position on the document table 3 . Below the document table 3 is provided a scanner 4 that moves left and right in the figure. Image data read from a document by the scanner 4 is stored in a data file device 5 provided near the lower end of the housing 1 .

[0038]Below the scanner 4 are provided two paper cassettes 6 a , 6 b which are detachable with respect to the housing 1 for storing paper. Transmissive optical sensors 7a, 7b for detecting the presence or absence of paper P, and supply rollers 8a, 8b for separating and se...

no. 2 example

[0074] Below, refer to Figure 8 , the Z folding mechanism 21 of the second embodiment of the present invention will be described. Since this embodiment is the same as the above-mentioned first embodiment except for the configuration of the roller pair, the same reference numerals are assigned to the same parts, and description thereof will be omitted. In the drawings, the paper is thickened and the nip between the roller pairs is enlarged and opened for the sake of explanation, but actually the rollers are in contact with each other.

[0075] In the Z folding mechanism of the present embodiment, the diameters of the plurality of rollers 33-36 are different according to the positions, and when the radii of the conveying rollers 33-36 are r3-r6 respectively, r3<r4<r5<r6. The conveying speeds of the rollers opposite to the rollers 33-36 are equal. For example, when the motors are used in common and the roller diameters are different from each other, the gear ratio is set so th...

no. 3 example

[0083] Below, refer to Figure 10 , the Z folding mechanism of the third embodiment of the present invention will be described. This embodiment is the same as the above-mentioned first embodiment except that the auxiliary mechanisms 60 and 65 are provided, and therefore description of the same parts will be omitted. In the drawings, the paper is thickened and the nip between the roller pairs is enlarged and opened for the sake of explanation, but actually the rollers are in contact with each other.

[0084] Such as Figure 10 As shown, in the Z-folding mechanism 21 of this embodiment, the auxiliary mechanisms 60 and 65 for assisting the bending deformation of the paper are arranged at two folding positions. The conveying speeds of the rollers 33-36 in this embodiment are equal.

[0085] The auxiliary mechanism 60 includes: an abutment member 61, which is pressed by the paper when the front end of the conveyed paper abuts against it; a connecting member 62, which is connecte...

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Abstract

A medium processing device comprises the following components: a plurality of rollers which comprise a plurality of roller pairs; a conveying roller pair which conveys a front end of paper to a first abutting part to form bending of paper; a first folding roller pair which guides the other side at the front end of paper and conveys to a first clamping part between the first folding roller pair to form a first polygonal line and conveys the first polygonal line to a second abutting part; and a second folding roller pair which forms a second polygonal line at the other side of the first polygonal line through a second clamping part between a second folding roller pair after the abutting of the first polygonal line and the second abutting part and forming bending of paper. When angle formed between the line connecting the axial centers of conveying roller pair and the line connecting the axial centers of the first folding roller pair is eta1, and angle formed between the line connecting the axial centers of the first folding roller pair and the line connecting the axial centers of the second folding roller pair is eta2, each roller is set for satisfying the relationship eta1> eta2. According to another embodiment, the sum of roller diameter of conveying roller pair is smaller than the sum of roller diameter of folding roller pair.

Description

[0001] Related Application Cross Reference [0002] This application calls for Ser. Benefit of the Four U.S. Provisional Application No. 60 / 987,356, filed November 12, 2007. technical field [0003] The present invention relates to a media processing device having a mechanism for folding, for example, sheet media. Background technique [0004] At present, as a paper folding mechanism for folding paper, for example US4,917,366 figure 1 Figure 2 shows the folding unit arranged between the copier and the finishing unit, and Figure 2 shows the folding device and paper feeding path. [0005] In addition, if Figure 17 As shown, there is known a Z-folding mechanism 100 in which a pair of rollers is provided, and a method of performing folding while conveying paper is used. This Z-folding mechanism 100 comprises: a pair of conveying rollers 101,102, is used for conveying paper through its clamping portion with fixed speed along arrow T0 direction (left direction in the figure);...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65H45/16B65H37/06B65H29/20G03G15/00
Inventor 山本干夫泷裕之
Owner KK TOSHIBA
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