JPS55117169A - Developing device - Google Patents

Developing device

Info

Publication number
JPS55117169A
JPS55117169A JP2369979A JP2369979A JPS55117169A JP S55117169 A JPS55117169 A JP S55117169A JP 2369979 A JP2369979 A JP 2369979A JP 2369979 A JP2369979 A JP 2369979A JP S55117169 A JPS55117169 A JP S55117169A
Authority
JP
Japan
Prior art keywords
developing
magnetic
density
blade
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
JP2369979A
Other languages
Japanese (ja)
Other versions
JPS64693B2 (en
Inventor
Nagao Hosono
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP2369979A priority Critical patent/JPS55117169A/en
Publication of JPS55117169A publication Critical patent/JPS55117169A/en
Publication of JPS64693B2 publication Critical patent/JPS64693B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

PURPOSE: To enable developing density to be changed according to picture quality and obtain always good visible image by changing the magnetic flux density on a developer supporting means thereby selectively adjusting the thickness of the thin and even developer layer on the supporting means.
CONSTITUTION: A defining blade 6 composed of magnetic material for coating toner 8 on a developing sleeve 5 to a layer of a suitable thickness is provided and the shaft 9 fixed to a magnet roll 4 is rotated by the driving means interlocked to, e.g., operating knob, at the non-developing to select the magnetic pole to be opposed to the blade 6. By changing the magnetic density on the sleeve 5 opposing to the blade 6, the thickness of the toner layer of the magnetic toner 8 to be coated on the sleeve 5 is changed so that the developing density may be selectively changed. Thereby, the development may be done at varying densities according to image quality and always good visible images may be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP2369979A 1979-03-01 1979-03-01 Developing device Granted JPS55117169A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2369979A JPS55117169A (en) 1979-03-01 1979-03-01 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2369979A JPS55117169A (en) 1979-03-01 1979-03-01 Developing device

Publications (2)

Publication Number Publication Date
JPS55117169A true JPS55117169A (en) 1980-09-09
JPS64693B2 JPS64693B2 (en) 1989-01-09

Family

ID=12117634

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2369979A Granted JPS55117169A (en) 1979-03-01 1979-03-01 Developing device

Country Status (1)

Country Link
JP (1) JPS55117169A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49126856U (en) * 1973-02-15 1974-10-30
JPS5217831A (en) * 1975-07-31 1977-02-10 Ricoh Co Ltd Electrophotography
JPS53125844A (en) * 1977-04-11 1978-11-02 Matsushita Electric Ind Co Ltd Developing apparatus for electrostatic photography

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49126856U (en) * 1973-02-15 1974-10-30
JPS5217831A (en) * 1975-07-31 1977-02-10 Ricoh Co Ltd Electrophotography
JPS53125844A (en) * 1977-04-11 1978-11-02 Matsushita Electric Ind Co Ltd Developing apparatus for electrostatic photography

Also Published As

Publication number Publication date
JPS64693B2 (en) 1989-01-09

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