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JPS5555372A - Magnetic brush developing unit - Google Patents

Magnetic brush developing unit

Info

Publication number
JPS5555372A
JPS5555372A JP12917878A JP12917878A JPS5555372A JP S5555372 A JPS5555372 A JP S5555372A JP 12917878 A JP12917878 A JP 12917878A JP 12917878 A JP12917878 A JP 12917878A JP S5555372 A JPS5555372 A JP S5555372A
Authority
JP
Japan
Prior art keywords
developer
developing
roller
feed
developing unit
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
JP12917878A
Other languages
Japanese (ja)
Other versions
JPS631583B2 (en
Inventor
Nobuo Kasahara
Hidetoshi Yano
Toshio Nakahara
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 JP12917878A priority Critical patent/JPS5555372A/en
Publication of JPS5555372A publication Critical patent/JPS5555372A/en
Publication of JPS631583B2 publication Critical patent/JPS631583B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

PURPOSE: To prevent scattering of developer and change of its characteristics, by stopping developer feed to a developing roller from feed rollers in nondeveloping to prevent the presence of developer on the developing roller in the developing unit.
CONSTITUTION: In the third yellow developing unit, developer 24 in developing vessel 21 is carried upward with rotation of first feed roller 30 and successively transferred via second and third feed rollers 33, 34 to developing roller 35, and then brought into contact with a latent image on the surface of photoreceptor 1 to develop this. When development is finished, rotation of agitator 27 and each feed roller 30, 33, 34 is stopped. Developing roller 35 is further rotated by a constanct angle from that time, then reversely rotated, and the part of roller 35 having passed by the edge of scraper 41 and freed of developer 24 is positioned to the developing section adjacent to photosensitive drum 1. Such process permits scattering of developer and change of its characteristics to be prevented.
COPYRIGHT: (C)1980,JPO&Japio
JP12917878A 1978-10-20 1978-10-20 Magnetic brush developing unit Granted JPS5555372A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12917878A JPS5555372A (en) 1978-10-20 1978-10-20 Magnetic brush developing unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12917878A JPS5555372A (en) 1978-10-20 1978-10-20 Magnetic brush developing unit

Publications (2)

Publication Number Publication Date
JPS5555372A true JPS5555372A (en) 1980-04-23
JPS631583B2 JPS631583B2 (en) 1988-01-13

Family

ID=15003061

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12917878A Granted JPS5555372A (en) 1978-10-20 1978-10-20 Magnetic brush developing unit

Country Status (1)

Country Link
JP (1) JPS5555372A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57116955U (en) * 1981-01-12 1982-07-20
JPS60122960A (en) * 1983-12-07 1985-07-01 Ricoh Co Ltd Multicolor developing method
JPS62262882A (en) * 1986-05-09 1987-11-14 Ricoh Co Ltd Multicolor developing device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0331498U (en) * 1989-08-08 1991-03-27

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5093438A (en) * 1973-12-19 1975-07-25
JPS50151530A (en) * 1974-05-28 1975-12-05
JPS5160251U (en) * 1974-11-05 1976-05-12
JPS51115037U (en) * 1975-03-13 1976-09-18
JPS5348534A (en) * 1976-10-14 1978-05-02 Fujitsu Ltd Developing device of electrostatic recorder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5093438A (en) * 1973-12-19 1975-07-25
JPS50151530A (en) * 1974-05-28 1975-12-05
JPS5160251U (en) * 1974-11-05 1976-05-12
JPS51115037U (en) * 1975-03-13 1976-09-18
JPS5348534A (en) * 1976-10-14 1978-05-02 Fujitsu Ltd Developing device of electrostatic recorder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57116955U (en) * 1981-01-12 1982-07-20
JPS60122960A (en) * 1983-12-07 1985-07-01 Ricoh Co Ltd Multicolor developing method
JPS62262882A (en) * 1986-05-09 1987-11-14 Ricoh Co Ltd Multicolor developing device

Also Published As

Publication number Publication date
JPS631583B2 (en) 1988-01-13

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