JPS5622415A - Optical scanner - Google Patents

Optical scanner

Info

Publication number
JPS5622415A
JPS5622415A JP9775179A JP9775179A JPS5622415A JP S5622415 A JPS5622415 A JP S5622415A JP 9775179 A JP9775179 A JP 9775179A JP 9775179 A JP9775179 A JP 9775179A JP S5622415 A JPS5622415 A JP S5622415A
Authority
JP
Japan
Prior art keywords
scanning
original
driving coil
driving
optical scanning
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
JP9775179A
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 JP9775179A priority Critical patent/JPS5622415A/en
Publication of JPS5622415A publication Critical patent/JPS5622415A/en
Pending legal-status Critical Current

Links

Landscapes

  • Dot-Matrix Printers And Others (AREA)
  • Laser Beam Printer (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

PURPOSE: To obtain a unit which is safe and can extend the life of an optical scanning equipment, by driving and controlling the optical scanning equipment so that optical scanning may be performed in the light shielding part other than the scanning visual field with a scanning width narrower than that for scanning in a low scanning speed for optical scanning waiting, in the scanner used for a scanning type electronic copying unit and so on.
CONSTITUTION: When scanning equipment driver 22 detects the waiting state of scanning, driver 22 controls and drives driving coil 18a to irradiate the laser beam light onto light shielding part 14a, which is provided in one side of the original platen, other than original 14 as shown by the broken line. Consequently, the laser beam is prevented from being leaked to the external and entering eyes of the worker for exchange of original 14. Since driving of driving coil 18a in this scanning waiting state is so set and controlled that the rotation speed may be lower than that of read scanning of original 14 and the scanning width may be narrower, the load for driving coil 18a can be small, so that the mechanical life of driving coil 18a can be extended.
COPYRIGHT: (C)1981,JPO&Japio
JP9775179A 1979-07-31 1979-07-31 Optical scanner Pending JPS5622415A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9775179A JPS5622415A (en) 1979-07-31 1979-07-31 Optical scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9775179A JPS5622415A (en) 1979-07-31 1979-07-31 Optical scanner

Publications (1)

Publication Number Publication Date
JPS5622415A true JPS5622415A (en) 1981-03-03

Family

ID=14200579

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9775179A Pending JPS5622415A (en) 1979-07-31 1979-07-31 Optical scanner

Country Status (1)

Country Link
JP (1) JPS5622415A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6282877A (en) * 1985-10-08 1987-04-16 Ricoh Co Ltd Exposing device for laser recording device
JPS6285566A (en) * 1985-10-11 1987-04-20 Ricoh Co Ltd Exposure device for laser recording device
US5132833A (en) * 1990-07-09 1992-07-21 Industrial Technology Research Institute Laser scanning system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6282877A (en) * 1985-10-08 1987-04-16 Ricoh Co Ltd Exposing device for laser recording device
JPS6285566A (en) * 1985-10-11 1987-04-20 Ricoh Co Ltd Exposure device for laser recording device
US5132833A (en) * 1990-07-09 1992-07-21 Industrial Technology Research Institute Laser scanning system

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