JPS5622461A - Optical scanner - Google Patents

Optical scanner

Info

Publication number
JPS5622461A
JPS5622461A JP9774479A JP9774479A JPS5622461A JP S5622461 A JPS5622461 A JP S5622461A JP 9774479 A JP9774479 A JP 9774479A JP 9774479 A JP9774479 A JP 9774479A JP S5622461 A JPS5622461 A JP S5622461A
Authority
JP
Japan
Prior art keywords
scanning
scanner
light
optical scanner
light shielding
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
JP9774479A
Other languages
Japanese (ja)
Inventor
Ryoji Yamaguchi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP9774479A priority Critical patent/JPS5622461A/en
Publication of JPS5622461A publication Critical patent/JPS5622461A/en
Pending legal-status Critical Current

Links

Landscapes

  • Combination Of More Than One Step In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Laser Beam Printer (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

PURPOSE:To protect eyes of the operator for exchange of originals and extend the life of the scanner, by providing a light shielding plate to shield the light path of the laser beam and stop the scanning operation of the optical scanner simultaneously at the time other than the optical scanning time. CONSTITUTION:Light shielding material 18 is provided movably between laser oscillator 10 and optical scanner 22 which scans optically scanned surface 12 by the laser light from laser oscillator 10; and when the unit becomes the scanning holding state before or after the read scanning operation, this holding state is detected, and the detection signal is supplied to electromagnetic coil driver 32 and scanner driver 28, and light shielding plate 18 is moved to shield laser beam light l, and simultaneously the scanning drive of optical scanner 22 is stopped to stop reciprocatory rotation of reflection mirror part 22b.
JP9774479A 1979-07-31 1979-07-31 Optical scanner Pending JPS5622461A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9774479A JPS5622461A (en) 1979-07-31 1979-07-31 Optical scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9774479A JPS5622461A (en) 1979-07-31 1979-07-31 Optical scanner

Publications (1)

Publication Number Publication Date
JPS5622461A true JPS5622461A (en) 1981-03-03

Family

ID=14200387

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9774479A Pending JPS5622461A (en) 1979-07-31 1979-07-31 Optical scanner

Country Status (1)

Country Link
JP (1) JPS5622461A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS599624A (en) * 1982-07-08 1984-01-19 Canon Inc Picture recording device
US5017961A (en) * 1988-06-29 1991-05-21 Minolta Camera Kabushiki Kaisha Image forming apparatus with use of a laser beam
EP1770430A1 (en) * 2005-09-30 2007-04-04 Samsung Electronics Co., Ltd. Image Forming Apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS599624A (en) * 1982-07-08 1984-01-19 Canon Inc Picture recording device
JPH0449688B2 (en) * 1982-07-08 1992-08-12 Canon Kk
US5017961A (en) * 1988-06-29 1991-05-21 Minolta Camera Kabushiki Kaisha Image forming apparatus with use of a laser beam
EP1770430A1 (en) * 2005-09-30 2007-04-04 Samsung Electronics Co., Ltd. Image Forming Apparatus
US7477280B2 (en) 2005-09-30 2009-01-13 Samsung Electronics Co., Ltd. Image forming apparatus having scanning beam blocking member

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