JPS56154769A - Developing device - Google Patents

Developing device

Info

Publication number
JPS56154769A
JPS56154769A JP5884280A JP5884280A JPS56154769A JP S56154769 A JPS56154769 A JP S56154769A JP 5884280 A JP5884280 A JP 5884280A JP 5884280 A JP5884280 A JP 5884280A JP S56154769 A JPS56154769 A JP S56154769A
Authority
JP
Japan
Prior art keywords
toner
sleeve
magnetic field
pole
support
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
JP5884280A
Other languages
Japanese (ja)
Other versions
JPS647667B2 (en
Inventor
Junichiro Kanbe
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 JP5884280A priority Critical patent/JPS56154769A/en
Publication of JPS56154769A publication Critical patent/JPS56154769A/en
Publication of JPS647667B2 publication Critical patent/JPS647667B2/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 obtain a clear image free from fog by forming the horizontal component of a magnetic field in a region of a developer support close to a latent image retaining body. CONSTITUTION:Toner support (sleeve) 1 is rotated around fixed magnet 2, and member 3 regulating the thickness of a toner layer is set at a place opposite to sleeve 1 and regulates the thickness of toner 4 applied to sleeve 1 by the action of a magnetic field formed with member 3 and magnetic pole N1. The arrangement of toner 4 in the vicinity of pole N1 is shown by the figure. The magnetic field on center line Y of the magnetic pole contains vertical component G1 alone, and chain toner T1 grows toward photosensitive drum 1. At places X away from the pole, horizontal component G2 of the magnetic field is dominant, and chain toner T2 lies down on the toner support. As a result, toner particles bind to each other more firmly at positions X, and the potential value of an electrostatic latent image required to attract the toner from sleeve 1 against the binding force is made larger to give a sufficient image density at the higher potential part. On the other hand, at the lower potential part, the rearrangement threshold value of the toner is made small to control fog.
JP5884280A 1980-05-02 1980-05-02 Developing device Granted JPS56154769A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5884280A JPS56154769A (en) 1980-05-02 1980-05-02 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5884280A JPS56154769A (en) 1980-05-02 1980-05-02 Developing device

Publications (2)

Publication Number Publication Date
JPS56154769A true JPS56154769A (en) 1981-11-30
JPS647667B2 JPS647667B2 (en) 1989-02-09

Family

ID=13095901

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5884280A Granted JPS56154769A (en) 1980-05-02 1980-05-02 Developing device

Country Status (1)

Country Link
JP (1) JPS56154769A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60176069A (en) * 1984-02-23 1985-09-10 Konishiroku Photo Ind Co Ltd Developing device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11110430B2 (en) 2016-02-26 2021-09-07 Ebara Corporation Treatment method of radioactive iodine-containing fluid

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52108132A (en) * 1976-03-08 1977-09-10 Konishiroku Photo Ind Co Ltd Electrostatic latent image development
JPS5310424A (en) * 1976-07-15 1978-01-30 West Electric Co Device for altering electronic flash unit light projecting angle
JPS53104249A (en) * 1977-02-23 1978-09-11 Ricoh Co Ltd Magnetic brush developer
JPS5427437A (en) * 1977-08-03 1979-03-01 Hitachi Metals Ltd Magnetic brush developing apparatus
JPS5491329A (en) * 1977-12-28 1979-07-19 Ricoh Co Ltd Reversal development
JPS5518659A (en) * 1978-07-28 1980-02-08 Canon Inc Electrophotographic developing method
JPS5518656A (en) * 1978-07-28 1980-02-08 Canon Inc Electrophotographic developing method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52108132A (en) * 1976-03-08 1977-09-10 Konishiroku Photo Ind Co Ltd Electrostatic latent image development
JPS5310424A (en) * 1976-07-15 1978-01-30 West Electric Co Device for altering electronic flash unit light projecting angle
JPS53104249A (en) * 1977-02-23 1978-09-11 Ricoh Co Ltd Magnetic brush developer
JPS5427437A (en) * 1977-08-03 1979-03-01 Hitachi Metals Ltd Magnetic brush developing apparatus
JPS5491329A (en) * 1977-12-28 1979-07-19 Ricoh Co Ltd Reversal development
JPS5518659A (en) * 1978-07-28 1980-02-08 Canon Inc Electrophotographic developing method
JPS5518656A (en) * 1978-07-28 1980-02-08 Canon Inc Electrophotographic developing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60176069A (en) * 1984-02-23 1985-09-10 Konishiroku Photo Ind Co Ltd Developing device
JPH0436383B2 (en) * 1984-02-23 1992-06-16 Konishiroku Photo Ind

Also Published As

Publication number Publication date
JPS647667B2 (en) 1989-02-09

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