JPS5294132A - Detector for deterioration of light source for copying machine - Google Patents

Detector for deterioration of light source for copying machine

Info

Publication number
JPS5294132A
JPS5294132A JP1113976A JP1113976A JPS5294132A JP S5294132 A JPS5294132 A JP S5294132A JP 1113976 A JP1113976 A JP 1113976A JP 1113976 A JP1113976 A JP 1113976A JP S5294132 A JPS5294132 A JP S5294132A
Authority
JP
Japan
Prior art keywords
deterioration
detector
light source
copying machine
fluorescent lamp
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
JP1113976A
Other languages
Japanese (ja)
Inventor
Makoto Kobu
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 JP1113976A priority Critical patent/JPS5294132A/en
Publication of JPS5294132A publication Critical patent/JPS5294132A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Control Of Exposure In Printing And Copying (AREA)

Abstract

PURPOSE:To exchange a fluorescent lamp properly and prevent the reduction of copy quality by detecting and displaying the blackening phenomenon of the end of the fluorescent lamp due to the deterioration of the fluorescent lamp for exposure.
JP1113976A 1976-02-03 1976-02-03 Detector for deterioration of light source for copying machine Pending JPS5294132A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1113976A JPS5294132A (en) 1976-02-03 1976-02-03 Detector for deterioration of light source for copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1113976A JPS5294132A (en) 1976-02-03 1976-02-03 Detector for deterioration of light source for copying machine

Publications (1)

Publication Number Publication Date
JPS5294132A true JPS5294132A (en) 1977-08-08

Family

ID=11769677

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1113976A Pending JPS5294132A (en) 1976-02-03 1976-02-03 Detector for deterioration of light source for copying machine

Country Status (1)

Country Link
JP (1) JPS5294132A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5951353U (en) * 1982-09-28 1984-04-04 コニカ株式会社 recording device
JPS59118475A (en) * 1982-12-24 1984-07-09 Toshiba Corp Thermal printer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5951353U (en) * 1982-09-28 1984-04-04 コニカ株式会社 recording device
JPS59118475A (en) * 1982-12-24 1984-07-09 Toshiba Corp Thermal printer
JPH0454590B2 (en) * 1982-12-24 1992-08-31 Tokyo Shibaura Electric Co

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