JPH01164450U

JPH01164450U -

Info

Publication number: JPH01164450U
Application number: JP5987488U
Authority: JP
Priority date: 1988-05-06
Filing date: 1988-05-06
Publication date: 1989-11-16

Description

[Brief explanation of the drawing]

第１図ないし第９図は本考案に係る開口開閉検
知装置を適用した画像形成機の一例としてのペー
ジプリンタの実施例を示すものであり、第１図は
電気回路図、第２図は制御回路図、第３図は第２
図のフローチヤート、第４図は第３図のタイムチ
ヤート、第５図はページプリンタの斜視図、第６
図は上部開口の開成状態におけるページプリンタ
の斜視図、第７図はページプリンタの縦断面図、
第８図は第６図の左側面図、第９図はカバースイ
ツチの近傍の拡大図、第１０図は従来の開口開閉
検知装置の電気回路図である。１……ページプリンタ、２……ハウジング、３
……感光ドラム、４……帯電器、５……光書込み
部材、６……現像器、７……転写器、８……除電
器、９……クリーナ、１１……給紙カセツト、１
３……搬送通路、１４……定着器、１６……給紙
トレイ、１７……画像形成手段、２０……上部開
口、２２……上部カバー、２３……カバースイツ
チ、２９……メインスイツチ、３０……交流電源
、３２……パワーサプライ、３４……モータ、３
８……メカコントローラ、３９……高圧電源、４
１……フオトカプラ、４２……発光ダイオード、
４４……光検出器、４７……コントローラ、４９
……検知回路、５０……タイマ、５１……プロセ
ス制御回路。 Figures 1 to 9 show an embodiment of a page printer as an example of an image forming machine to which the opening/closing detection device according to the present invention is applied. Figure 1 is an electric circuit diagram, and Figure 2 is a control diagram. Circuit diagram, Figure 3 is the second
Figure 4 is a time chart of Figure 3, Figure 5 is a perspective view of the page printer, and Figure 6 is a flowchart of Figure 4.
The figure is a perspective view of the page printer in a state where the upper opening is open, and FIG. 7 is a longitudinal cross-sectional view of the page printer.
8 is a left side view of FIG. 6, FIG. 9 is an enlarged view of the vicinity of the cover switch, and FIG. 10 is an electric circuit diagram of a conventional opening/closing detection device. 1...Page printer, 2...Housing, 3
... Photosensitive drum, 4 ... Charger, 5 ... Optical writing member, 6 ... Developer, 7 ... Transfer device, 8 ... Static eliminator, 9 ... Cleaner, 11 ... Paper feed cassette, 1
3...Transportation path, 14...Fixing device, 16...Paper feed tray, 17...Image forming means, 20...Top opening, 22...Top cover, 23...Cover switch, 29...Main switch, 30... AC power supply, 32... Power supply, 34... Motor, 3
8...Mechanical controller, 39...High voltage power supply, 4
1... Photocoupler, 42... Light emitting diode,
44...Photodetector, 47...Controller, 49
...detection circuit, 50 ... timer, 51 ... process control circuit.

Claims

[Scope of utility model registration request]

An image forming means for forming an image on paper,
In an image forming machine that is disposed in a housing having an opening that can be opened and closed by a lid and is also provided with a control means for controlling the image forming means, when the opening is opened by the lid, the image forming apparatus is An opening/closing means for cutting off current is provided, the control means is energized without passing through the opening/closing means, and a conducting wire for energizing the image forming means downstream of the opening/closing means is connected to the primary side. An opening/closing detection device for an image forming machine, characterized in that an opto-isolator is provided in which a conductive wire for energizing the control means is connected to a secondary side.