JPS5691245A - Driving method of copying machine - Google Patents

Driving method of copying machine

Info

Publication number
JPS5691245A
JPS5691245A JP16874879A JP16874879A JPS5691245A JP S5691245 A JPS5691245 A JP S5691245A JP 16874879 A JP16874879 A JP 16874879A JP 16874879 A JP16874879 A JP 16874879A JP S5691245 A JPS5691245 A JP S5691245A
Authority
JP
Japan
Prior art keywords
voltage
frequency
pulses
drum
speed
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
JP16874879A
Other languages
Japanese (ja)
Inventor
Takeshi Fukuchi
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 JP16874879A priority Critical patent/JPS5691245A/en
Publication of JPS5691245A publication Critical patent/JPS5691245A/en
Pending legal-status Critical Current

Links

Landscapes

  • Combination Of More Than One Step In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To enable the selection freedom degree of the diameter of a photosensitive drum or the like by detecting the speed of the drum with voltage, converting this to the pulses of the frequency corresponding to said voltage and driving stepping motors with these pulses. CONSTITUTION:The pulses of the frequency proportional to the rotating speed of a photosensitive drum 5 is obtained by the encoder 16 directly coupled to the drum 5, and are converted to the voltage propotional to said frequency by a frequency/voltage converter 19 whereby the speed of the drum 5 is detected as voltage. This voltage is amplified 20 and is converted to pulses of required frequency by a voltage/ frequency converter 21. Stepping motors 17, 18 are driven by these pulses in a driving circuit 22. The frequency of the controlling pulses of the stepping motors 17, 18 are variable by adjusting the gain of the amplifier 20 with a gain-adjusting variable resistor 24, and no matter an original drum 1, feed roller 9 and discharge roller 11 are of what diameters, these are driven at the speeds synchronized to the speed of the drum 5.
JP16874879A 1979-12-25 1979-12-25 Driving method of copying machine Pending JPS5691245A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16874879A JPS5691245A (en) 1979-12-25 1979-12-25 Driving method of copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16874879A JPS5691245A (en) 1979-12-25 1979-12-25 Driving method of copying machine

Publications (1)

Publication Number Publication Date
JPS5691245A true JPS5691245A (en) 1981-07-24

Family

ID=15873682

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16874879A Pending JPS5691245A (en) 1979-12-25 1979-12-25 Driving method of copying machine

Country Status (1)

Country Link
JP (1) JPS5691245A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57210353A (en) * 1981-06-16 1982-12-23 Toshiba Corp Image forming device
JPS58136059A (en) * 1982-02-08 1983-08-12 Fuji Xerox Co Ltd Speed controller of copying machine
JPH0687964U (en) * 1990-12-27 1994-12-22 株式会社東芝 Image forming device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57210353A (en) * 1981-06-16 1982-12-23 Toshiba Corp Image forming device
JPS58136059A (en) * 1982-02-08 1983-08-12 Fuji Xerox Co Ltd Speed controller of copying machine
JPH0687964U (en) * 1990-12-27 1994-12-22 株式会社東芝 Image forming device

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