JPS5748740A - Developing method - Google Patents

Developing method

Info

Publication number
JPS5748740A
JPS5748740A JP55123891A JP12389180A JPS5748740A JP S5748740 A JPS5748740 A JP S5748740A JP 55123891 A JP55123891 A JP 55123891A JP 12389180 A JP12389180 A JP 12389180A JP S5748740 A JPS5748740 A JP S5748740A
Authority
JP
Japan
Prior art keywords
developer
cylinder
interval
thickness
insulating
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.)
Pending
Application number
JP55123891A
Other languages
Japanese (ja)
Inventor
Yasuo Mihashi
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 JP55123891A priority Critical patent/JPS5748740A/en
Publication of JPS5748740A publication Critical patent/JPS5748740A/en
Pending 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
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/06—Developing
    • G03G13/08—Developing using a solid developer, e.g. powder developer
    • G03G13/09—Developing using a solid developer, e.g. powder developer using magnetic brush

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To form a developing powder layer which is homogeneous and uniform without using a carrier by disposing an electrostatic image holding member and an insulating developer carrier at a constant interval in a developing part, and by making a spherical insulating developer carried in a thickness thinnner than the said interval. CONSTITUTION:In a developing device having an electrostatic image holding photoreceptor drum 11 and an internal fixed magnet 19 for example, and using a nonmagnetic cylinder 14a as a one-component insulating magnetic developer carrier, the interval of the development part between the drum 11 and cylinder 14a is set to a definite size. On the other hand, an iron-made doctor blade 20 is disposed close (50-500mum) to the surface of the cylinder 14a and opposedly to one magnetic pole of the fixed magnet 19, a developer 21 is restricted to have a thickness (30- 300mum) thinner than the said interval. This developer 21 is obtained by crushing a raw material after fusing and mixing and by heting it in the form of a fluid layer to obtain in a spherical shape, and by classifying it in 5-20mum grain size. Thus, a developer layer is formed in a uniform thickness on the cylinder 14a to obtain superior pictures free of uneveness.
JP55123891A 1980-09-05 1980-09-05 Developing method Pending JPS5748740A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55123891A JPS5748740A (en) 1980-09-05 1980-09-05 Developing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55123891A JPS5748740A (en) 1980-09-05 1980-09-05 Developing method

Publications (1)

Publication Number Publication Date
JPS5748740A true JPS5748740A (en) 1982-03-20

Family

ID=14871902

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55123891A Pending JPS5748740A (en) 1980-09-05 1980-09-05 Developing method

Country Status (1)

Country Link
JP (1) JPS5748740A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63225606A (en) * 1986-10-24 1988-09-20 Asahi Chem Ind Co Ltd Hydrophobic crosslinked copolymer
JPH0337201A (en) * 1989-07-04 1991-02-18 Sekisui Plastics Co Ltd Production of elastic acrylic particle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5331136A (en) * 1976-06-30 1978-03-24 Minnesota Mining & Mfg Method of selectively attaching toner particles on surface of material
JPS5518656A (en) * 1978-07-28 1980-02-08 Canon Inc Electrophotographic developing method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5331136A (en) * 1976-06-30 1978-03-24 Minnesota Mining & Mfg Method of selectively attaching toner particles on surface of material
JPS5518656A (en) * 1978-07-28 1980-02-08 Canon Inc Electrophotographic developing method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63225606A (en) * 1986-10-24 1988-09-20 Asahi Chem Ind Co Ltd Hydrophobic crosslinked copolymer
JPH0746098B2 (en) * 1986-10-24 1995-05-17 旭化成工業株式会社 Packing material for liquid chromatography
JPH0337201A (en) * 1989-07-04 1991-02-18 Sekisui Plastics Co Ltd Production of elastic acrylic particle

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