JPS6486665A - Picture reader - Google Patents

Picture reader

Info

Publication number
JPS6486665A
JPS6486665A JP62242742A JP24274287A JPS6486665A JP S6486665 A JPS6486665 A JP S6486665A JP 62242742 A JP62242742 A JP 62242742A JP 24274287 A JP24274287 A JP 24274287A JP S6486665 A JPS6486665 A JP S6486665A
Authority
JP
Japan
Prior art keywords
time
point
charge storage
goes
light emitting
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
JP62242742A
Other languages
Japanese (ja)
Inventor
Tokuichi Tsunekawa
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.)
Canon Inc
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 JP62242742A priority Critical patent/JPS6486665A/en
Publication of JPS6486665A publication Critical patent/JPS6486665A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To remarkably reduce after-image even at high speed reading by stopping the lighting from a prescribed point of time before the end of a charge storage period of a photoelectric conversion means till the start of next electric charge storage. CONSTITUTION:When a one-shot circuit MN restores to the stable state at a point of time t4 and a base voltage TB goes to a high level, a transistor TR 2 is turned on to goes off a light emitting element LD. The extinguished state continues till the next charge transfer pulse phish descends (point of time t3). The extinguished period Td (=t3-t4) is provided to reduce the after-image remarkably and to extend the service life of, the light emitting element LD. The minimum value of the Td is decided on the time of the charge generated at a photosensitive section at a point of time t4 required to be reached to the electric charge storage section with drifting.
JP62242742A 1987-09-29 1987-09-29 Picture reader Pending JPS6486665A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62242742A JPS6486665A (en) 1987-09-29 1987-09-29 Picture reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62242742A JPS6486665A (en) 1987-09-29 1987-09-29 Picture reader

Publications (1)

Publication Number Publication Date
JPS6486665A true JPS6486665A (en) 1989-03-31

Family

ID=17093581

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62242742A Pending JPS6486665A (en) 1987-09-29 1987-09-29 Picture reader

Country Status (1)

Country Link
JP (1) JPS6486665A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0646206A (en) * 1992-06-15 1994-02-18 Matsushita Graphic Commun Syst Inc Picture reader
US11091939B2 (en) 2016-10-25 2021-08-17 Mitsui Kinzoku Act Corporation Door lock apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0646206A (en) * 1992-06-15 1994-02-18 Matsushita Graphic Commun Syst Inc Picture reader
US11091939B2 (en) 2016-10-25 2021-08-17 Mitsui Kinzoku Act Corporation Door lock apparatus

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