JPS5781281A - Wear detecting device for electro-insulating layer in photorecepter - Google Patents

Wear detecting device for electro-insulating layer in photorecepter

Info

Publication number
JPS5781281A
JPS5781281A JP55156918A JP15691880A JPS5781281A JP S5781281 A JPS5781281 A JP S5781281A JP 55156918 A JP55156918 A JP 55156918A JP 15691880 A JP15691880 A JP 15691880A JP S5781281 A JPS5781281 A JP S5781281A
Authority
JP
Japan
Prior art keywords
electro
insulating layer
resistance
change
current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP55156918A
Other languages
Japanese (ja)
Inventor
Hideaki Ema
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP55156918A priority Critical patent/JPS5781281A/en
Publication of JPS5781281A publication Critical patent/JPS5781281A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To detect easily wear of electro-insulating layer during, copying by providing an electro-conductive member for detection on an electric insulating layer of a photoreceptor, and an electro-condutive member right under said member. CONSTITUTION:A constant voltage V is applied among an electro-insulating layer 4, a conductive board 2 serving as an electric resistance and a conductive member 6 for detection. And the voltage generated between both ends of a resistance 8 which is connected between a conductive board 2 and a electric power source 8 is indicated with a voltmeter 9. Therefore, since a large current is applied through the resistance 8 at the time when the plate 2 contacts with the member 6 while one part of the layer 4 and worn, the magnitude of this current or the magnitude of the change of the current between befor-and after said contact is detected as the change of the voltage generated between both ends of the resistance 8, then a displaying circuit 10 is made to operate as said change of the voltage is served as a trigger, thereby the detected results is displayed with a displaying part 11.
JP55156918A 1980-11-10 1980-11-10 Wear detecting device for electro-insulating layer in photorecepter Pending JPS5781281A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55156918A JPS5781281A (en) 1980-11-10 1980-11-10 Wear detecting device for electro-insulating layer in photorecepter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55156918A JPS5781281A (en) 1980-11-10 1980-11-10 Wear detecting device for electro-insulating layer in photorecepter

Publications (1)

Publication Number Publication Date
JPS5781281A true JPS5781281A (en) 1982-05-21

Family

ID=15638215

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55156918A Pending JPS5781281A (en) 1980-11-10 1980-11-10 Wear detecting device for electro-insulating layer in photorecepter

Country Status (1)

Country Link
JP (1) JPS5781281A (en)

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