JPS6250822A - Image forming device - Google Patents

Image forming device

Info

Publication number
JPS6250822A
JPS6250822A JP60191124A JP19112485A JPS6250822A JP S6250822 A JPS6250822 A JP S6250822A JP 60191124 A JP60191124 A JP 60191124A JP 19112485 A JP19112485 A JP 19112485A JP S6250822 A JPS6250822 A JP S6250822A
Authority
JP
Japan
Prior art keywords
light
value
control circuit
fluorescent lamp
specific
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
JP60191124A
Other languages
Japanese (ja)
Inventor
Yoshiaki Takayanagi
Fumio Mikami
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP60191124A priority Critical patent/JPS6250822A/en
Publication of JPS6250822A publication Critical patent/JPS6250822A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To shorten the light quantity rise time of a light source at low cost by providing a detecting means which detects the quantity of light of the light source reaching a set value and a sequence control means which starts an exposure scan on an original after the set value is detected. CONSTITUTION:A photodetecting element 13 detects the quantity of light of a fluorescent lamp 3 and a light quantity control circuit 14 receives the output of the photodetecting element 13 to control the quantity of light of the fluorescent lamp to the specific set value. A high frequency stabilizer 15 receives a signal from the light quantity control circuit 14 and supplies a controlled tube current to the fluorescent lamp 3. A light quantity startup detection circuit 17 receives the signal from the light quantity control circuit 14 and detects the quantity of light at the startup of the fluorescent lamp 3 reaching the specific value or the specific rate of the specific set value, thereby transmitting its startup detection output to the sequence control circuit 16. Consequently, the sequence control circuit controls the forward movement of a platen 2. thus, the light quantity rise time of the light source is shortened at low cost.
JP60191124A 1985-08-30 1985-08-30 Image forming device Pending JPS6250822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60191124A JPS6250822A (en) 1985-08-30 1985-08-30 Image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60191124A JPS6250822A (en) 1985-08-30 1985-08-30 Image forming device

Publications (1)

Publication Number Publication Date
JPS6250822A true JPS6250822A (en) 1987-03-05

Family

ID=16269263

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60191124A Pending JPS6250822A (en) 1985-08-30 1985-08-30 Image forming device

Country Status (1)

Country Link
JP (1) JPS6250822A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5771106A (en) * 1994-10-13 1998-06-23 Ricoh Company, Ltd. Shading correcting means for image forming apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5771106A (en) * 1994-10-13 1998-06-23 Ricoh Company, Ltd. Shading correcting means for image forming apparatus
US6195180B1 (en) 1994-10-13 2001-02-27 Ricoh Company, Limited Image forming apparatus
US6229627B1 (en) 1994-10-13 2001-05-08 Ricoh Company, Ltd. Image forming apparatus

Similar Documents

Publication Publication Date Title
JPS6057762A (en) Adjusting method of impress voltage of photomultiplier tube in picture scanning and recording device
JPS6250822A (en) Image forming device
JPH02306112A (en) Adjusting apparatus for sensitivity of sensor
JPS63157087A (en) Photosensitive material detecting device and photosensitive material detecting method using same
JPS61137012A (en) Apparatus for outputting rotary information
JPS62194264A (en) Jam detecting device for intermediate tray part
JPH04213572A (en) Automatic detection and call device for elevator
JPS57138663A (en) Copying device
JPH01246680A (en) Bar code detector
JPS59185465A (en) Original illuminating device
JPH02126273A (en) Image recorder
JPH0197977A (en) Detector for paper of peeling defect in image forming device
JPS626239A (en) Exposing device
JPH04204672A (en) Image forming device
JPH04282654A (en) Image forming device
JPS626277A (en) Exposing device
JPS6268362A (en) Light source device using fluorescent tube
JPS61264363A (en) Driving device for light emitting element array
JPS62279368A (en) Image forming device
JPS642077A (en) Exposure illuminator for copying machine
JPS6116672A (en) Image scanner
JPS59204372A (en) Confirming device for lighting of fluorescent lamp of facsimile equipment
JPS59101970A (en) Automatic gain controlling circuit
JPS63231323A (en) Electronic flash device
JPS60225833A (en) Dynamic type flat light emitting strobe device