JPS5955768U

JPS5955768U - Copy machine

Info

Publication number: JPS5955768U
Application number: JP15131882U
Authority: JP
Inventors: 中嶋　嘉宏
Original assignee: 株式会社リコー
Priority date: 1982-10-05
Filing date: 1982-10-05
Publication date: 1984-04-12

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、本考案の一実施例の複写機の構成図、第２図
は、検知器の出力を出すタイミング信号の波形図、第３
図は、本考案の−・実施例の検知及び表示回路の回路図
である。１：・・・・・感光体ドラム、２・・・・・・現像装置
、３・・・・・・クリーニング装置、４・・・・・・除
電装置、５・・・・・・検知器、６・・・・・・帯電器
、７・・・・・・パターン、８・・・・・・原稿、９・
・・・・・コンタクトガラス、１０・・・・・・転写装
置、１・・・・・・分離装置、１２・・・・・・分離爪
、１３・・・・・・定着装置、１４・・・・・・排紙ト
レイ、１５・・・・・・送りローラ、１６・・・・・・
給紙カセット、１７・・・・・・搬送装置、１８・・・
・・・発光ダイ１−ド、１９・・・・・・フォトトラン
ジスタ、２０・・・・・・コンパレータ、２１・・・・
・・インバータ、２２・・・・・・アンドゲート、２３
・・・・・・フリップフロップ、２４・・・・・・トラ
ンジスタ、２５・・曲メンテ必要表示部、２６・・・・
・・タイミング信号出力部、２７・・・　。・・・リセット信号出力部。ｔｌ　　　　　　　　　　　　・１２□ 在人７６〜２５ ′°小　２ｏ２．２ｂ２４FIG. 1 is a configuration diagram of a copying machine according to an embodiment of the present invention, FIG. 2 is a waveform diagram of a timing signal for outputting a detector output, and FIG.
The figure is a circuit diagram of a detection and display circuit according to an embodiment of the present invention. 1: Photosensitive drum, 2: Developing device, 3: Cleaning device, 4: Static eliminator, 5: Detector , 6...Charger, 7...Pattern, 8...Original, 9.
... Contact glass, 10 ... Transfer device, 1 ... Separation device, 12 ... Separation claw, 13 ... Fixing device, 14. ... Paper ejection tray, 15 ... Feed roller, 16 ...
Paper feed cassette, 17... Conveyance device, 18...
...Light emitting diode 1-de, 19...Phototransistor, 20...Comparator, 21...
...Inverter, 22...And gate, 23
... Flip-flop, 24 ... Transistor, 25 ... Maintenance required display section, 26 ...
...Timing signal output section, 27... ...Reset signal output section. tl ・ 12□ Resident 7 6 ~ 25 '° Small 2o2.2b 24

Claims

[Scope of utility model registration request]

a photosensitive drum, a contact glass having a pattern on a portion thereof, an exposure device that projects the pattern and an image of the original on the contact glass onto the photosensitive drum, and a developing device that transfers the toner image onto a transfer paper; The cleaning device includes a cleaning device that cleans the photoconductor drum after transferring the toner image onto the transfer paper, and a detector having a reflective photosensor that detects the surface of the cleaned photoconductor drum, and the cleaning device cleans the photoconductor drum. 1. A copying machine characterized in that, after cleaning the body drum, the detector detects a portion of the photosensitive drum that is located in the pattern portion of the contact glass, and performs maintenance diagnosis and display.