JPS5756870A - Magnetic brush development device - Google Patents

Magnetic brush development device

Info

Publication number
JPS5756870A
JPS5756870A JP11166081A JP11166081A JPS5756870A JP S5756870 A JPS5756870 A JP S5756870A JP 11166081 A JP11166081 A JP 11166081A JP 11166081 A JP11166081 A JP 11166081A JP S5756870 A JPS5756870 A JP S5756870A
Authority
JP
Japan
Prior art keywords
magnetic
magnetic pole
width
tip part
sleeve
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
JP11166081A
Other languages
Japanese (ja)
Other versions
JPS6248826B2 (en
Inventor
Setsu Tanzawa
Yasunori Kawaishi
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 JP11166081A priority Critical patent/JPS5756870A/en
Publication of JPS5756870A publication Critical patent/JPS5756870A/en
Publication of JPS6248826B2 publication Critical patent/JPS6248826B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/09—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush

Abstract

PURPOSE:To get rid of a part where no developer like a white line is on the picture, by constituting so that width of the tip part of a developer control member consisting of a magnetic substance is made smaller than width of the magnetic pole, and the line of magnetic force is concentrated on the tip part of the control member. CONSTITUTION:To the circumference of a fixed development roller 1, a sleeve 3 is installed so as to be rotatable. Onto this sleeve 3, a magnetic toner D is supplied from a hopper 4, and is controlled to prescribed thickness uniformly by a doctor blade 5. A counter magnetic pole plate 6 consisting of a magnetic substance or a magnet is provided so as to be opposed to a magnetic pole 7-2. Width of the tip part of the counter magnetic pole plate 6 is made smaller than width of the magnetic pole 7 so that the line of magnetic force is concentrated on the tip part of the counter magnetic pole plate 6. In this way, the magnetic toner D is formed like a wall at the opposed part, is moved in the lateral direction in that case, thickness of the toner D on the sleeve 3 is equalized, and at the same time, clogging of the doctor blade part 5 is removed.
JP11166081A 1981-07-17 1981-07-17 Magnetic brush development device Granted JPS5756870A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11166081A JPS5756870A (en) 1981-07-17 1981-07-17 Magnetic brush development device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11166081A JPS5756870A (en) 1981-07-17 1981-07-17 Magnetic brush development device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP13898276A Division JPS5363022A (en) 1976-11-18 1976-11-18 Developing method by magnetic brush

Publications (2)

Publication Number Publication Date
JPS5756870A true JPS5756870A (en) 1982-04-05
JPS6248826B2 JPS6248826B2 (en) 1987-10-15

Family

ID=14566952

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11166081A Granted JPS5756870A (en) 1981-07-17 1981-07-17 Magnetic brush development device

Country Status (1)

Country Link
JP (1) JPS5756870A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63218980A (en) * 1986-12-09 1988-09-12 Toshiba Corp Developing device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5363022A (en) * 1976-11-18 1978-06-06 Ricoh Co Ltd Developing method by magnetic brush
JPS5443037A (en) * 1977-09-10 1979-04-05 Canon Inc Electrostatic image developing device
JPS562439A (en) * 1979-06-22 1981-01-12 Nissan Motor Co Ltd Number of cylinder control engine
JPS6148157A (en) * 1984-08-11 1986-03-08 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device
JPS6248826A (en) * 1985-08-28 1987-03-03 Fujitsu Ltd Frame synchronizing system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5363022A (en) * 1976-11-18 1978-06-06 Ricoh Co Ltd Developing method by magnetic brush
JPS5443037A (en) * 1977-09-10 1979-04-05 Canon Inc Electrostatic image developing device
JPS562439A (en) * 1979-06-22 1981-01-12 Nissan Motor Co Ltd Number of cylinder control engine
JPS6148157A (en) * 1984-08-11 1986-03-08 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device
JPS6248826A (en) * 1985-08-28 1987-03-03 Fujitsu Ltd Frame synchronizing system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63218980A (en) * 1986-12-09 1988-09-12 Toshiba Corp Developing device
JPH0465380B2 (en) * 1986-12-09 1992-10-19 Tokyo Shibaura Electric Co

Also Published As

Publication number Publication date
JPS6248826B2 (en) 1987-10-15

Similar Documents

Publication Publication Date Title
JPS533348A (en) Process and device for controlling toner density of developer liquid
JPS5732463A (en) Developing device
JPS5496044A (en) Developing device of electrostatic latent images
GB1480087A (en) Development apparatus
JPS5756870A (en) Magnetic brush development device
JPS55149962A (en) Magnetic brush type developing device
JPS57151974A (en) Developing device
JPS53112750A (en) Developing device
JPS53125844A (en) Developing apparatus for electrostatic photography
JPS53132351A (en) Magnetic brush developing device
JPS5625763A (en) Magnetic brush developing device
JPS5584962A (en) Magnetic brush development device
JPS541635A (en) Developing device in dry type electrophotographic copier
JPS5377530A (en) Magnetic brush developing method
JPS5691266A (en) Developing device
JPS5584960A (en) Magnetic brush developing device
JPS52108139A (en) Magnetic brush device
JPS5660469A (en) Developing device
JPS5233542A (en) Process for preventing surface soil of copy in the wet type color electrop hotographic copying machine
JPS5430837A (en) Developing device
JPS5737379A (en) Developing device
JPS5263344A (en) Toner density control by magnetic brush
JPS57154269A (en) Developing device
JPS5596968A (en) Developing device
JPS5430838A (en) Developing device