JPS56104340A - Electrophotographic method - Google Patents

Electrophotographic method

Info

Publication number
JPS56104340A
JPS56104340A JP718680A JP718680A JPS56104340A JP S56104340 A JPS56104340 A JP S56104340A JP 718680 A JP718680 A JP 718680A JP 718680 A JP718680 A JP 718680A JP S56104340 A JPS56104340 A JP S56104340A
Authority
JP
Japan
Prior art keywords
toner
photoreceptor
particle diameter
image
magnetic
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
JP718680A
Other languages
Japanese (ja)
Inventor
Shigekazu Enoki
Hiroharu Suzuki
Toshio Kaneko
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 JP718680A priority Critical patent/JPS56104340A/en
Publication of JPS56104340A publication Critical patent/JPS56104340A/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
    • G03G13/14—Transferring a pattern to a second base
    • G03G13/16—Transferring a pattern to a second base of a toner pattern, e.g. a powder pattern

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE:To enable a toner image to be transferred to a plain paper without weakening toner charge, by using a one-component type magnetic toner of particle diameter in a specified range, forming conductive paths between a developing sleeve and a photoreceptor, and injecting charge reverse in polarity to an electrostatic latent image to the toner. CONSTITUTION:A magnetic material having 0.5-5mum average particle diameter amounting to 30-70wt% of the total raw material of a toner containing a binder resin is heat-melted and cooled, then pulverized to give a one-component type toner having 8-18mum average particle diameter and 1.8-2.2 true specific density. Obtained toner particle T have magnetic grains larger than conventional ones, and forms a conductive path in the direction X-X, but toner particle T functions as an insulating material in the direction Y-Y due to larger spaces between magnetic grains 11. As a result, a few toner particles form a conductive path between photoreceptor 2 and grounded developing sleeve 6 surrounding fixed magnets 9, and toner T1 is given positive charge reverse to electrostatic negative charge on photoreceptor 2, thus permitting toner T1 to form a visible image by toner T2 and then, toner T2 to form a transferred toner image of toner T3 by applying an electric field to transfer paper S from the backside.
JP718680A 1980-01-24 1980-01-24 Electrophotographic method Pending JPS56104340A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP718680A JPS56104340A (en) 1980-01-24 1980-01-24 Electrophotographic method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP718680A JPS56104340A (en) 1980-01-24 1980-01-24 Electrophotographic method

Publications (1)

Publication Number Publication Date
JPS56104340A true JPS56104340A (en) 1981-08-20

Family

ID=11659017

Family Applications (1)

Application Number Title Priority Date Filing Date
JP718680A Pending JPS56104340A (en) 1980-01-24 1980-01-24 Electrophotographic method

Country Status (1)

Country Link
JP (1) JPS56104340A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6330408B1 (en) * 1998-10-28 2001-12-11 Sharp Kabushiki Kaisha Transfer apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6330408B1 (en) * 1998-10-28 2001-12-11 Sharp Kabushiki Kaisha Transfer apparatus

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