JPS5714862A - Light beam scanning type electrophotographic device - Google Patents

Light beam scanning type electrophotographic device

Info

Publication number
JPS5714862A
JPS5714862A JP8870480A JP8870480A JPS5714862A JP S5714862 A JPS5714862 A JP S5714862A JP 8870480 A JP8870480 A JP 8870480A JP 8870480 A JP8870480 A JP 8870480A JP S5714862 A JPS5714862 A JP S5714862A
Authority
JP
Japan
Prior art keywords
change
destaticizer
intensity
light beam
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.)
Pending
Application number
JP8870480A
Other languages
Japanese (ja)
Inventor
Kozo Arao
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 JP8870480A priority Critical patent/JPS5714862A/en
Publication of JPS5714862A publication Critical patent/JPS5714862A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/043—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure
    • G03G15/0435—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure by introducing an optical element in the optical path, e.g. a filter

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Laser Beam Printer (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To obtain good latent images with virtually no influence of the change in beam intensity despite the occurrence of said change by detecting the intensity of a light beam and controlling the applied voltage of a simultaneous destaticizer in correspondence to the output thereof. CONSTITUTION:A mirror 15 is provided on the outside of an image region, and the reflected beam thereof is entered to a control circuit 17 via a beam detector 16. In the circuit 17, the applied voltage to a simultaneous destaticizer 7 is controlled by a high voltage transformer generating the high voltage to be applied to the destaticizer 7 in accordance with the photoelectric conversion output of a detector 16. Thereby, the area where the potential of a bright part hardly changes despite the change in beam intensity is increased, and the ordinary change in beam intensity is made least influential. Therefore, in spite of a change in beam output, good latent images are formed with virtually no influence thereof.
JP8870480A 1980-06-30 1980-06-30 Light beam scanning type electrophotographic device Pending JPS5714862A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8870480A JPS5714862A (en) 1980-06-30 1980-06-30 Light beam scanning type electrophotographic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8870480A JPS5714862A (en) 1980-06-30 1980-06-30 Light beam scanning type electrophotographic device

Publications (1)

Publication Number Publication Date
JPS5714862A true JPS5714862A (en) 1982-01-26

Family

ID=13950261

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8870480A Pending JPS5714862A (en) 1980-06-30 1980-06-30 Light beam scanning type electrophotographic device

Country Status (1)

Country Link
JP (1) JPS5714862A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59220771A (en) * 1983-05-31 1984-12-12 Canon Inc Combination copying machine and printer
JPS6125164A (en) * 1984-07-13 1986-02-04 Fujitsu Ltd Printing device
JPH0811599A (en) * 1994-09-13 1996-01-16 Tenryu Ind Co Ltd Variable direction seat

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59220771A (en) * 1983-05-31 1984-12-12 Canon Inc Combination copying machine and printer
JPS6125164A (en) * 1984-07-13 1986-02-04 Fujitsu Ltd Printing device
JPH0811599A (en) * 1994-09-13 1996-01-16 Tenryu Ind Co Ltd Variable direction seat

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