JPS5621152A - Copying machine - Google Patents

Copying machine

Info

Publication number
JPS5621152A
JPS5621152A JP9659979A JP9659979A JPS5621152A JP S5621152 A JPS5621152 A JP S5621152A JP 9659979 A JP9659979 A JP 9659979A JP 9659979 A JP9659979 A JP 9659979A JP S5621152 A JPS5621152 A JP S5621152A
Authority
JP
Japan
Prior art keywords
copying
speed
copying speed
efficiency
controlled
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
JP9659979A
Other languages
Japanese (ja)
Inventor
Satoru Tomita
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP9659979A priority Critical patent/JPS5621152A/en
Publication of JPS5621152A publication Critical patent/JPS5621152A/en
Pending legal-status Critical Current

Links

Landscapes

  • Paper Feeding For Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To make copying speed variable without any degradation in image quality by changing required copying conditions according to the change in copying speed. CONSTITUTION:Copying of the copying speed changed in such a manner that the leading end position of the exposed portion formed by exposure on a photosensitive drum and the leading end of the copying paper sent out by a resist roller coincide at all times irrespective of the change in the rotating speed of the photosensitive drum is accomplished by a control unit CD, a copying speed changing circuit VE, a copying speed changing mechanism VM, etc. according to the operation of an operating section OP. At the same time, the circuit to be controlled CT is controlled by way of the operating section OP and the unit CD, whereby one condition out of copying conditions such as charging efficiency, exposure, developing efficiency, fixing efficiency and transfer efficiency is properly controlled according to the copying speed and the copying speed may thus be changed without any degradation in image quality.
JP9659979A 1979-07-28 1979-07-28 Copying machine Pending JPS5621152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9659979A JPS5621152A (en) 1979-07-28 1979-07-28 Copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9659979A JPS5621152A (en) 1979-07-28 1979-07-28 Copying machine

Publications (1)

Publication Number Publication Date
JPS5621152A true JPS5621152A (en) 1981-02-27

Family

ID=14169337

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9659979A Pending JPS5621152A (en) 1979-07-28 1979-07-28 Copying machine

Country Status (1)

Country Link
JP (1) JPS5621152A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5050932A (en) * 1973-09-04 1975-05-07
JPS5134730A (en) * 1974-07-09 1976-03-24 Plessey Handel Investment Ag

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5050932A (en) * 1973-09-04 1975-05-07
JPS5134730A (en) * 1974-07-09 1976-03-24 Plessey Handel Investment Ag

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