JPS5657066A - Magnetic brush developing apparatus - Google Patents

Magnetic brush developing apparatus

Info

Publication number
JPS5657066A
JPS5657066A JP13371279A JP13371279A JPS5657066A JP S5657066 A JPS5657066 A JP S5657066A JP 13371279 A JP13371279 A JP 13371279A JP 13371279 A JP13371279 A JP 13371279A JP S5657066 A JPS5657066 A JP S5657066A
Authority
JP
Japan
Prior art keywords
toner
state
eccentric cam
movable bar
assumes
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
JP13371279A
Other languages
Japanese (ja)
Other versions
JPS5929871B2 (en
Inventor
Takashi Maruyama
Takaharu Goto
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.)
Proterial Ltd
Original Assignee
Hitachi Metals 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 Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Priority to JP54133712A priority Critical patent/JPS5929871B2/en
Publication of JPS5657066A publication Critical patent/JPS5657066A/en
Publication of JPS5929871B2 publication Critical patent/JPS5929871B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE: To enable toner replenishment amount to be automatically controlled with simple mechanism by operating an eccentric cam and a toner replensihing roll rotating cooperatively with a nonmagnetic cylinder by way of a movable bar having a member of ferromagnetic material at one end.
CONSTITUTION: When a nonmagnetic cylinder 2 is rotated, and eccentric cam 14 cooperating with this by means of a belt transmission mechanism rotates as well. Thence, when pulse currents are flowed to a solenoid 16, no magnetic field is generated in the solenoid 16 when the pulse currents are 0; therefore, a movable bar 12 assumes a state of the alternate long and short dash lines and its end part 12a assumes a noncontact state with the eccentric cam 14. In this state, a toner replenishing roll 8 does not revolve and the replenishment of the toner is not accomplished. On the other hand, when the pulse currents flow, a magnetic field is generaged in the solenoid 16, and the upward force acts upon the member 15, so that the movable bar 12 assumes the state of the solid lines and its end part 12a and eccentric cam 14 assume a pressure-contact state, then the movable bar 12 repeats oscillatory motion, thus the toner replenishment by the toner replenishing roll 8 is accomplished.
COPYRIGHT: (C)1981,JPO&Japio
JP54133712A 1979-10-17 1979-10-17 magnetic brush developing device Expired JPS5929871B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54133712A JPS5929871B2 (en) 1979-10-17 1979-10-17 magnetic brush developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54133712A JPS5929871B2 (en) 1979-10-17 1979-10-17 magnetic brush developing device

Publications (2)

Publication Number Publication Date
JPS5657066A true JPS5657066A (en) 1981-05-19
JPS5929871B2 JPS5929871B2 (en) 1984-07-24

Family

ID=15111126

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54133712A Expired JPS5929871B2 (en) 1979-10-17 1979-10-17 magnetic brush developing device

Country Status (1)

Country Link
JP (1) JPS5929871B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6284060U (en) * 1985-11-18 1987-05-28
JPH0572898A (en) * 1992-02-14 1993-03-26 Mita Ind Co Ltd Electrostatic latent image developing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6284060U (en) * 1985-11-18 1987-05-28
JPH0521084Y2 (en) * 1985-11-18 1993-05-31
JPH0572898A (en) * 1992-02-14 1993-03-26 Mita Ind Co Ltd Electrostatic latent image developing device

Also Published As

Publication number Publication date
JPS5929871B2 (en) 1984-07-24

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