JPH01149343U

JPH01149343U -

Info

Publication number: JPH01149343U
Application number: JP4681688U
Authority: JP
Priority date: 1988-04-08
Filing date: 1988-04-08
Publication date: 1989-10-16
Anticipated expiration: 2003-04-08
Also published as: JPH0638825Y2

Description

[Brief explanation of the drawing]

第１図はこの考案による給紙装置を複写機に適
用した例を示す概略構成図、第２図は第１図の上
下レジストローラ１３及び２０を示す正面図、第
３図は第１図の駆動側及び従動側中継ローラ１８
及び１９を示す正面図、第４図は第１図の給紙ロ
ーラ１を用紙Ｐと共に示す平面図、第５図は従来
の複写機に使用されている給紙装置の例を示す第
１図と同様な概略構成図、第６図及び第７図は用
紙Ｐに作用する斜め方向の搬送力及び用紙に生じ
る白抜けをそれぞれ説明するための斜視図である
。１…給紙ローラ、３…フリクシヨンパツド、５
，６，９，２１，２２，２３，２４，２５…ガイ
ド板、１３…上レジストローラ、１８…駆動側中
継ローラ、１９…従動側中継ローラ、２０…下レ
ジストローラ、２０ａ，２０ｂ…テーパ部、２０
ｃ…平滑ローラ部、２７，２８，２９…コロ。 FIG. 1 is a schematic configuration diagram showing an example in which the paper feeding device according to this invention is applied to a copying machine, FIG. 2 is a front view showing the upper and lower registration rollers 13 and 20 of FIG. 1, and FIG. Drive side and driven side relay roller 18
and 19, FIG. 4 is a plan view showing the paper feed roller 1 of FIG. 1 together with paper P, and FIG. 5 is a front view showing an example of a paper feed device used in a conventional copying machine. 6 and 7 are perspective views for explaining the diagonal conveyance force acting on the paper P and the white spots that occur on the paper, respectively. 1... Paper feed roller, 3... Friction pad, 5
, 6, 9, 21, 22, 23, 24, 25...Guide plate, 13...Upper registration roller, 18...Drive side relay roller, 19...Driver side relay roller, 20...Lower registration roller, 20a, 20b...Tapered portion , 20
c... Smooth roller portion, 27, 28, 29... Rollers.

Claims

[Scope of claim for utility model registration] A paper feed roller, a double feeding prevention means in contact with it,
A pair of registration rollers, a pair of relay rollers disposed between the paper feed roller and the pair of registration rollers, each having a plurality of roller groups fixed on the pair of rotating shafts with a plurality of roller groups facing each other at intervals, and a paper guide means. In a paper feeding device in which the relay roller pair and the registration roller pair have different paper feeding directions, both sides of at least one of the registration roller pair in the rotational axis direction are formed to have a diameter somewhat smaller than that of the central portion, and . A sheet feeding device, wherein the roller groups on both sides in the direction of the rotational axis of at least one of the pair of relay rollers are formed to have a somewhat smaller diameter than the roller group in the center thereof.