JPS58175549U

JPS58175549U - Transfer assist device in electrophotographic copying machine

Info

Publication number: JPS58175549U
Application number: JP7280782U
Authority: JP
Inventors: 大迫　秀幸; 邦夫工藤
Original assignee: 株式会社リコー
Priority date: 1982-05-20
Filing date: 1982-05-20
Publication date: 1983-11-24

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は、本考案による転写補助装置を具備し　　　　
　　・た複写機の概略全体構成側断面図、第２図は本考
案転写補助装置の主たる構成を示す一実施例、第３図お
よび第４図は、第２図と共に本考案の動作を説明するた
めの図面、第５図、第８図および第９図は本考案装置が
奏するところの効果を説明し、これに対し、第６図およ
び第７図は従来公知の装置による転写シートの起り褥る
状態を示すもので、第１０図は矯正ローラの加圧機構の
詳細書および第１１図は転写補助装置の制御回路のブロ
ック図である。７・・・・・・感光体ドラ゛ム、１９・・・・・・カッ
ター、２〇−０・・・・・・弾性体からなる大径ローラ
、２０−２・・・・・・硬質小径ローラ、３０・・・・
・・ロール紙巻径検知手段、４０−、．４０−２・・・
・・・転写シート検知手段、４５・・・・・・タイマー
、−４６・・・・・・ワンショットマルチバイブレータ
、５０・・・・・・圧力切替レバー、６０・・・・・・
加圧カム、７０・・・・・・スプリングクラッチからな
る圧力切替クラッチ、８０・・・・・・圧力切替クラッ
チストッパー、９０・・・・・・圧力切替ソレノイド、
Ｓ・・・・・・転写シート。第５図　　　　　　第６図 ♂　　　　−ン′ 第７図　　　−第８図第９図、　　ハイ第１０図　　　ｍFigure 1 shows a device equipped with a transfer assisting device according to the present invention.
・A side cross-sectional view of the overall general configuration of a copying machine; FIG. 2 is an embodiment showing the main configuration of the transfer assisting device of the present invention; FIGS. 3 and 4 together with FIG. 2 explain the operation of the present invention. Figures 5, 8 and 9 illustrate the effects achieved by the device of the present invention, whereas Figures 6 and 7 illustrate how the transfer sheet is undulated using a conventionally known device. FIG. 10 is a detailed description of the pressure mechanism for the correction roller, and FIG. 11 is a block diagram of the control circuit of the transfer assisting device. 7...Photosensitive drum, 19...Cutter, 20-0...Large diameter roller made of elastic material, 20-2...Hard Small diameter roller, 30...
. . . Roll paper diameter detection means, 40-, . 40-2...
... Transfer sheet detection means, 45 ... Timer, -46 ... One-shot multivibrator, 50 ... Pressure switching lever, 60 ...
Pressure cam, 70...Pressure switching clutch consisting of a spring clutch, 80...Pressure switching clutch stopper, 90...Pressure switching solenoid,
S...Transfer sheet. Figure 5 Figure 6 ♂ -n' Figure 7 - Figure 8 Figure 9, High Figure 10 m

Claims

[Scope of utility model registration request]

(1) In an electrophotographic copying machine that uses roll paper as a transfer sheet, the arrival of the transfer sheet is sequentially performed along a transfer sheet movement path that connects the step of cutting the roll paper into transfer sheets for each leaf and the transfer step. 1. A transfer auxiliary device comprising: a detecting means; and a transfer sheet curl correcting means that operates upon receiving a signal from the detecting means via a time circuit.゛

(2) In the electrophotographic copying machine according to claim 1, wherein the transfer sheet curl correcting means is provided with a timer circuit so as not to act on at least the leading end of the transfer sheet in the moving direction. Transfer assist device.

(3) Utility model registration claim 1, characterized in that the function of the transfer sheet curl correcting means is slightly excessively applied so that the rear end of the transfer sheet comes into close contact with the image bearing surface of the photoreceptor drum. A transfer assisting device for an electrophotographic copying machine as described in 2.

(4) An electrophotographic copying device according to claim 1 of the utility model registration, characterized in that a means for detecting the winding diameter of the roll paper is provided, and the curl correction effect on the transfer sheet is changed depending on the size of the winding diameter. Transfer assist device in the machine.