JPH0326591B2 - - Google Patents

Info

Publication number
JPH0326591B2
JPH0326591B2 JP58152296A JP15229683A JPH0326591B2 JP H0326591 B2 JPH0326591 B2 JP H0326591B2 JP 58152296 A JP58152296 A JP 58152296A JP 15229683 A JP15229683 A JP 15229683A JP H0326591 B2 JPH0326591 B2 JP H0326591B2
Authority
JP
Japan
Prior art keywords
light
image
level
display surface
light amount
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.)
Expired - Lifetime
Application number
JP58152296A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6043962A (ja
Inventor
Nobuhisa Yamazaki
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.)
PFU Ltd
Original Assignee
PFU 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 PFU Ltd filed Critical PFU Ltd
Priority to JP58152296A priority Critical patent/JPS6043962A/ja
Publication of JPS6043962A publication Critical patent/JPS6043962A/ja
Publication of JPH0326591B2 publication Critical patent/JPH0326591B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Character Input (AREA)
  • Image Input (AREA)
  • Facsimile Scanning Arrangements (AREA)
JP58152296A 1983-08-20 1983-08-20 イメージリーダの光量低下検出方法 Granted JPS6043962A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58152296A JPS6043962A (ja) 1983-08-20 1983-08-20 イメージリーダの光量低下検出方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58152296A JPS6043962A (ja) 1983-08-20 1983-08-20 イメージリーダの光量低下検出方法

Publications (2)

Publication Number Publication Date
JPS6043962A JPS6043962A (ja) 1985-03-08
JPH0326591B2 true JPH0326591B2 (OSRAM) 1991-04-11

Family

ID=15537421

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58152296A Granted JPS6043962A (ja) 1983-08-20 1983-08-20 イメージリーダの光量低下検出方法

Country Status (1)

Country Link
JP (1) JPS6043962A (OSRAM)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61221884A (ja) * 1985-03-14 1986-10-02 Fujitsu Ltd 画像読取り装置
JPH0722314B2 (ja) * 1985-11-13 1995-03-08 株式会社リコー 原稿照明用光源の劣化検出方式
JPH01300670A (ja) * 1988-05-28 1989-12-05 Fuji Xerox Co Ltd 読取装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57171877A (en) * 1981-04-16 1982-10-22 Canon Inc Detecting device for degradation of light source in facsimile device

Also Published As

Publication number Publication date
JPS6043962A (ja) 1985-03-08

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