JPS57210366A - Copying machine - Google Patents

Copying machine

Info

Publication number
JPS57210366A
JPS57210366A JP56201121A JP20112181A JPS57210366A JP S57210366 A JPS57210366 A JP S57210366A JP 56201121 A JP56201121 A JP 56201121A JP 20112181 A JP20112181 A JP 20112181A JP S57210366 A JPS57210366 A JP S57210366A
Authority
JP
Japan
Prior art keywords
placing table
home position
original placing
signal
original
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.)
Granted
Application number
JP56201121A
Other languages
Japanese (ja)
Other versions
JPS6053297B2 (en
Inventor
Hajime Katayama
Hiroshi Nitanda
Kenju Nagaoka
Hirotoshi Kishi
Noriyoshi Iida
Yusaku Takada
Yutaka Komiya
Tsuneki Inuzuka
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 JP56201121A priority Critical patent/JPS6053297B2/en
Publication of JPS57210366A publication Critical patent/JPS57210366A/en
Publication of JPS6053297B2 publication Critical patent/JPS6053297B2/en
Expired 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To prevent exposure from starting in the middle of an original, and to achieve invariably accurate image exposure, by starting the scanning of an original placing table by a detection signal for showing that the original placing table is at its home position, and a copying preparation completion signal. CONSTITUTION:To one input terminal of a two-input AND gate 315, a signal CBHP showing that an original placing table is at its home position is applied, and from a terminal 271, a copying preparation completion signal CCMD for detecting the presence of a developer and transfer paper is also applied. To set a flip-flop 324, the original placing table should be at the home position while copying preparations are completed. Therefore, when an orginal placing table advancing signal CBFOR is outputted, the original placing table moves forth from the home position without fail and exposure never starts at a shifted position, performing invariably accurate image exposure.
JP56201121A 1981-12-14 1981-12-14 copying device Expired JPS6053297B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56201121A JPS6053297B2 (en) 1981-12-14 1981-12-14 copying device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56201121A JPS6053297B2 (en) 1981-12-14 1981-12-14 copying device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP49143893A Division JPS5177245A (en) 1974-12-13 1974-12-13

Publications (2)

Publication Number Publication Date
JPS57210366A true JPS57210366A (en) 1982-12-23
JPS6053297B2 JPS6053297B2 (en) 1985-11-25

Family

ID=16435752

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56201121A Expired JPS6053297B2 (en) 1981-12-14 1981-12-14 copying device

Country Status (1)

Country Link
JP (1) JPS6053297B2 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4872786A (en) * 1971-12-29 1973-10-01
JPS491234A (en) * 1972-04-15 1974-01-08
JPS4922661A (en) * 1972-06-24 1974-02-28
JPS4944754A (en) * 1972-09-01 1974-04-27
JPS4978557A (en) * 1972-11-30 1974-07-29
JPS5099153A (en) * 1973-12-28 1975-08-06
JPS6053297A (en) * 1983-06-09 1985-03-26 ニトロ・ノベル・ア−ベ− Method of joining two pipe end

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4872786A (en) * 1971-12-29 1973-10-01
JPS491234A (en) * 1972-04-15 1974-01-08
JPS4922661A (en) * 1972-06-24 1974-02-28
JPS4944754A (en) * 1972-09-01 1974-04-27
JPS4978557A (en) * 1972-11-30 1974-07-29
JPS5099153A (en) * 1973-12-28 1975-08-06
JPS6053297A (en) * 1983-06-09 1985-03-26 ニトロ・ノベル・ア−ベ− Method of joining two pipe end

Also Published As

Publication number Publication date
JPS6053297B2 (en) 1985-11-25

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