JPS55113072A - Electrophotographic copier - Google Patents

Electrophotographic copier

Info

Publication number
JPS55113072A
JPS55113072A JP2157779A JP2157779A JPS55113072A JP S55113072 A JPS55113072 A JP S55113072A JP 2157779 A JP2157779 A JP 2157779A JP 2157779 A JP2157779 A JP 2157779A JP S55113072 A JPS55113072 A JP S55113072A
Authority
JP
Japan
Prior art keywords
sleeve
charger
developing device
constant speed
magnetic
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
JP2157779A
Other languages
Japanese (ja)
Other versions
JPS6035063B2 (en
Inventor
Isao Yamaguchi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP54021577A priority Critical patent/JPS6035063B2/en
Publication of JPS55113072A publication Critical patent/JPS55113072A/en
Publication of JPS6035063B2 publication Critical patent/JPS6035063B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE: To eliminate the uneven revolutions owing to the variations in the driving torque of a rotating sleeve and minimize the production of noise by driving the rotating sleeve of the magnetic brush type developing device to rotate at a constant speed by a motor equipped with a rotating speed detecting means.
CONSTITUTION: A charger 13, exposure slit 14, developing device 15, transfer charger 16, paper-destaticizing charger 17, photoreceptor-destaticizing charger 18 and cleaner 19 are subsequently disposed aroung the photosensitive drum 12. The developing device 15 is constituted by the magnet roll provided with the stationary magnetic pole group by permanent magnet 33 in a rotary sleeve 32 made of non- magnetic material. The developer composed of toner and carrier is lifted by the magnetic force of the magnet 33 along with the rotation of the sleeve 32 to form a magnetic brush which then lightly rubs the surface of the drum 12, whereby the electrostatic latent images are developed and the toner images obtained. In this case, the sleeve 32 is driven to rotate at a constant speed by the constant speed control motor provided with a rotating speed detecting means.
COPYRIGHT: (C)1980,JPO&Japio
JP54021577A 1979-02-26 1979-02-26 electrophotographic copying device Expired JPS6035063B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54021577A JPS6035063B2 (en) 1979-02-26 1979-02-26 electrophotographic copying device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54021577A JPS6035063B2 (en) 1979-02-26 1979-02-26 electrophotographic copying device

Publications (2)

Publication Number Publication Date
JPS55113072A true JPS55113072A (en) 1980-09-01
JPS6035063B2 JPS6035063B2 (en) 1985-08-12

Family

ID=12058879

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54021577A Expired JPS6035063B2 (en) 1979-02-26 1979-02-26 electrophotographic copying device

Country Status (1)

Country Link
JP (1) JPS6035063B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4561771A (en) * 1982-08-10 1985-12-31 Minolta Camera Kabushiki Kaisha System for controlling the reciprocation of a scanning apparatus
US4568171A (en) * 1982-07-05 1986-02-04 Minolta Camera Kabushiki Kaisha System for controlling the reciprocation of a scanning arrangement
JPS62115472A (en) * 1985-11-14 1987-05-27 Sharp Corp Abnormality detector for image forming device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4568171A (en) * 1982-07-05 1986-02-04 Minolta Camera Kabushiki Kaisha System for controlling the reciprocation of a scanning arrangement
US4561771A (en) * 1982-08-10 1985-12-31 Minolta Camera Kabushiki Kaisha System for controlling the reciprocation of a scanning apparatus
JPS62115472A (en) * 1985-11-14 1987-05-27 Sharp Corp Abnormality detector for image forming device

Also Published As

Publication number Publication date
JPS6035063B2 (en) 1985-08-12

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