JPS57114157A - Image formation - Google Patents

Image formation

Info

Publication number
JPS57114157A
JPS57114157A JP56381A JP56381A JPS57114157A JP S57114157 A JPS57114157 A JP S57114157A JP 56381 A JP56381 A JP 56381A JP 56381 A JP56381 A JP 56381A JP S57114157 A JPS57114157 A JP S57114157A
Authority
JP
Japan
Prior art keywords
screen
movement direction
resolution
enlarged
light image
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
JP56381A
Other languages
Japanese (ja)
Inventor
Noboru Narita
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 JP56381A priority Critical patent/JPS57114157A/en
Publication of JPS57114157A publication Critical patent/JPS57114157A/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
    • G03G15/05—Apparatus for electrographic processes using a charge pattern for imagewise charging, e.g. photoconductive control screen, optically activated charging means
    • G03G15/051—Apparatus for electrographic processes using a charge pattern for imagewise charging, e.g. photoconductive control screen, optically activated charging means by modulating an ion flow through a photoconductive screen onto which a charge image has been formed

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)

Abstract

PURPOSE:To prevent deterioration of resolution in the movement direction and to obtain a high quality image, by enhancing velocity of screen movement at the same time as exposing the screen to a light image enlarged only in the movement direction in accordance with its acceleration ratio. CONSTITUTION:A screen 1 rotates in the direction reverse to that of an insulating drum 11, and the peripheral speed of the screen 1 is optionally variable. Convex and concave cylindrical lenses 21, 22 are arranged in an optical system to expose the screen 1 to an original light image enlarged only in the movement direction. When the screen velocity is raised from 10cm/sec to 20cm/sec, and the original light image is enlarged by twice only in the movement direction, the resolution measured rises from 6.4 line/mm. to 8.0 lines/mm., thus permitting deterioration of resolution in the movement direction is prevented and a high quality image is formed.
JP56381A 1981-01-06 1981-01-06 Image formation Pending JPS57114157A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56381A JPS57114157A (en) 1981-01-06 1981-01-06 Image formation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56381A JPS57114157A (en) 1981-01-06 1981-01-06 Image formation

Publications (1)

Publication Number Publication Date
JPS57114157A true JPS57114157A (en) 1982-07-15

Family

ID=11477182

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56381A Pending JPS57114157A (en) 1981-01-06 1981-01-06 Image formation

Country Status (1)

Country Link
JP (1) JPS57114157A (en)

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