JPS56102859A - Electrophotographic method - Google Patents

Electrophotographic method

Info

Publication number
JPS56102859A
JPS56102859A JP500980A JP500980A JPS56102859A JP S56102859 A JPS56102859 A JP S56102859A JP 500980 A JP500980 A JP 500980A JP 500980 A JP500980 A JP 500980A JP S56102859 A JPS56102859 A JP S56102859A
Authority
JP
Japan
Prior art keywords
toner
photoreceptor
image
colorant
average particle
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
JP500980A
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 JP500980A priority Critical patent/JPS56102859A/en
Publication of JPS56102859A publication Critical patent/JPS56102859A/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
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/0825—Developers with toner particles characterised by their structure; characterised by non-homogenuous distribution of components
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/083—Magnetic toner particles

Landscapes

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

Abstract

PURPOSE:To form a good transferred image on a plain paper, by using a specified one-component type magnetic toner, forming electrically conductive paths via the toner between a photoreceptor and a roller having a rotary sleeve on the outside of fixed magnets, and injecting charge reverse in polarity to an electrostatic latent image to the toner. CONSTITUTION:The one-component type magnetic toner to be used consists of magnetic powder 11 of 0.3-5mum average particle diameter useful as a colorant, too, colorant 13 of 0.5-5mum average particle diameter, and a binder resin. The raw material in which the sum of colorant 13 and powder 11 amounts to 30-70wt% of the total toner wt., and powder 11 amounts to 35-65wt% is mixed, melted, cooled, and pulverized to give a toner having 8-18mum average particle diameter and 1.8-2.2 true specific density. This toner forms conductive paths 14 between developing sleeve 6 having fixed magnets 9, and photoreceptor 2 on drum 1, and becomes positively charged toner T1 against negatively charged electrostatic image on photoreceptor 2, and electrostatic latent image T2 is formed with rotation of photoreceptor 1 and sleeve 6. The developed toner image T2 is transferred to plain paper S by imparting charge to the reverse side of paper S. Since magnetic particles 11 are coarse and the charge of toner T1, T2, T3 is not ready to decay after charging, superior image transfer is carried out.
JP500980A 1980-01-19 1980-01-19 Electrophotographic method Pending JPS56102859A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP500980A JPS56102859A (en) 1980-01-19 1980-01-19 Electrophotographic method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP500980A JPS56102859A (en) 1980-01-19 1980-01-19 Electrophotographic method

Publications (1)

Publication Number Publication Date
JPS56102859A true JPS56102859A (en) 1981-08-17

Family

ID=11599542

Family Applications (1)

Application Number Title Priority Date Filing Date
JP500980A Pending JPS56102859A (en) 1980-01-19 1980-01-19 Electrophotographic method

Country Status (1)

Country Link
JP (1) JPS56102859A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5464720A (en) * 1992-05-13 1995-11-07 Canon Kabushiki Kaisha Electrophotographic method and apparatus using magnetic toner
KR100295517B1 (en) * 1997-12-19 2001-10-29 사까모도 마사모도 Toner, electrostatic latent image development and image formation method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5464720A (en) * 1992-05-13 1995-11-07 Canon Kabushiki Kaisha Electrophotographic method and apparatus using magnetic toner
KR100295517B1 (en) * 1997-12-19 2001-10-29 사까모도 마사모도 Toner, electrostatic latent image development and image formation method

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