JPS6438768A - Light quantity controlling circuit for fluorescent lamp for illuminating document surface in electronic copying machine - Google Patents

Light quantity controlling circuit for fluorescent lamp for illuminating document surface in electronic copying machine

Info

Publication number
JPS6438768A
JPS6438768A JP62194818A JP19481887A JPS6438768A JP S6438768 A JPS6438768 A JP S6438768A JP 62194818 A JP62194818 A JP 62194818A JP 19481887 A JP19481887 A JP 19481887A JP S6438768 A JPS6438768 A JP S6438768A
Authority
JP
Japan
Prior art keywords
fluorescent lamp
surface temperature
tube surface
light quantity
output
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.)
Granted
Application number
JP62194818A
Other languages
English (en)
Other versions
JP2603645B2 (ja
Inventor
Akihiko Taniguchi
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP62194818A priority Critical patent/JP2603645B2/ja
Publication of JPS6438768A publication Critical patent/JPS6438768A/ja
Application granted granted Critical
Publication of JP2603645B2 publication Critical patent/JP2603645B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

JP62194818A 1987-08-04 1987-08-04 原稿面照明用蛍光灯の光量制御回路 Expired - Fee Related JP2603645B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62194818A JP2603645B2 (ja) 1987-08-04 1987-08-04 原稿面照明用蛍光灯の光量制御回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62194818A JP2603645B2 (ja) 1987-08-04 1987-08-04 原稿面照明用蛍光灯の光量制御回路

Publications (2)

Publication Number Publication Date
JPS6438768A true JPS6438768A (en) 1989-02-09
JP2603645B2 JP2603645B2 (ja) 1997-04-23

Family

ID=16330768

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62194818A Expired - Fee Related JP2603645B2 (ja) 1987-08-04 1987-08-04 原稿面照明用蛍光灯の光量制御回路

Country Status (1)

Country Link
JP (1) JP2603645B2 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04309064A (ja) * 1991-04-05 1992-10-30 Fuji Xerox Co Ltd 画像読取装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61151525A (ja) * 1984-12-26 1986-07-10 Ricoh Co Ltd 複写機における露光装置
JPS6358797A (ja) * 1986-08-28 1988-03-14 キヤノン株式会社 照明装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61151525A (ja) * 1984-12-26 1986-07-10 Ricoh Co Ltd 複写機における露光装置
JPS6358797A (ja) * 1986-08-28 1988-03-14 キヤノン株式会社 照明装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04309064A (ja) * 1991-04-05 1992-10-30 Fuji Xerox Co Ltd 画像読取装置

Also Published As

Publication number Publication date
JP2603645B2 (ja) 1997-04-23

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees