JPS5624363A - Control circuit of copying machine - Google Patents

Control circuit of copying machine

Info

Publication number
JPS5624363A
JPS5624363A JP10012679A JP10012679A JPS5624363A JP S5624363 A JPS5624363 A JP S5624363A JP 10012679 A JP10012679 A JP 10012679A JP 10012679 A JP10012679 A JP 10012679A JP S5624363 A JPS5624363 A JP S5624363A
Authority
JP
Japan
Prior art keywords
speed
photoreceptor
pulses
voltage
units
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
JP10012679A
Other languages
Japanese (ja)
Inventor
Yoshitaka Fujikawa
Takehiro Yoshimura
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 JP10012679A priority Critical patent/JPS5624363A/en
Publication of JPS5624363A publication Critical patent/JPS5624363A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To control necessary units synchronously with simple structure, by controlling synchronous movement of the first and second units associated with each other, such as a photoreceptor and an optical scanner in accordance with the result of specified operation of voltage corresponding to speed change. CONSTITUTION:Phase comparator 1 compares phases of pulses oscillated by oscillator OSC1 to those of photoreceptor movement speed detection pulses of sensor PS1 through D type FF, and generates pulses Sa, Sb of width corresponding to coming sooner or later due to speed fluctuation of the photoreceptor. Integration circuit II generates voltage Ve corresponding to photoreceptor speed fluctuation in accordance with these pulses Sa or Sb, and applies it to addition circuit 3. On the other hand, voltage Vf corresponding to detection speed of an optical scanner and set speed Vr, etc. are also applied to circuit III, operation based on equation I is made, the scanner speed is controlled by the set speed of the first term of equation I and speed fluctuation of the photoreceptor of its second term, thus permitting the 2 units to be synchronously controlled with an simple electric structure. In addition, Rfo, R=R1=R2, and each represents set resistance value.
JP10012679A 1979-08-06 1979-08-06 Control circuit of copying machine Pending JPS5624363A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10012679A JPS5624363A (en) 1979-08-06 1979-08-06 Control circuit of copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10012679A JPS5624363A (en) 1979-08-06 1979-08-06 Control circuit of copying machine

Publications (1)

Publication Number Publication Date
JPS5624363A true JPS5624363A (en) 1981-03-07

Family

ID=14265624

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10012679A Pending JPS5624363A (en) 1979-08-06 1979-08-06 Control circuit of copying machine

Country Status (1)

Country Link
JP (1) JPS5624363A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS594613U (en) * 1982-07-02 1984-01-12 株式会社トーキン inductor
JPS6159328U (en) * 1984-09-25 1986-04-21
JPS61261754A (en) * 1985-05-16 1986-11-19 Shinko Electric Co Ltd Image forming device
US5345209A (en) * 1992-07-30 1994-09-06 Tdk Corporation Adjustment system for a coil device
US5347255A (en) * 1992-05-07 1994-09-13 Tdk Corporation Variable inductance coil device
US5382937A (en) * 1992-07-30 1995-01-17 Tdk Corporation Coil device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS594613U (en) * 1982-07-02 1984-01-12 株式会社トーキン inductor
JPH0452970Y2 (en) * 1982-07-02 1992-12-14
JPS6159328U (en) * 1984-09-25 1986-04-21
JPS61261754A (en) * 1985-05-16 1986-11-19 Shinko Electric Co Ltd Image forming device
US5347255A (en) * 1992-05-07 1994-09-13 Tdk Corporation Variable inductance coil device
US5345209A (en) * 1992-07-30 1994-09-06 Tdk Corporation Adjustment system for a coil device
US5382937A (en) * 1992-07-30 1995-01-17 Tdk Corporation Coil device
US5572788A (en) * 1992-07-30 1996-11-12 Tdk Corporation Coil device

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