JPS5511298A - Developer for electrophotography - Google Patents

Developer for electrophotography

Info

Publication number
JPS5511298A
JPS5511298A JP8711279A JP8711279A JPS5511298A JP S5511298 A JPS5511298 A JP S5511298A JP 8711279 A JP8711279 A JP 8711279A JP 8711279 A JP8711279 A JP 8711279A JP S5511298 A JPS5511298 A JP S5511298A
Authority
JP
Japan
Prior art keywords
weight parts
developing
grain size
mean grain
frictional charging
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
JP8711279A
Other languages
Japanese (ja)
Other versions
JPS5834829B2 (en
Inventor
Jun Kanbara
Yuzo Omuro
Jinichi Kamogawa
Masaru Nakamura
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta 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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP54087112A priority Critical patent/JPS5834829B2/en
Publication of JPS5511298A publication Critical patent/JPS5511298A/en
Publication of JPS5834829B2 publication Critical patent/JPS5834829B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)
  • Fixing For Electrophotography (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE: To keep the developing operation free from effects of humidity, obtain picture images of excellent continuous tone, simplify the structure of the apparatus used, and increase the developing efficiency, by using insulating magnetic toner haveing frictional charging characteristic only.
CONSTITUTION: On the basis of the total weight of the resin, 100 weight parts of thermoplastic resin containing styrene content preferably by more than 25%, about 20 to 70 weight parts of fine granular ferro-magnetic body of which mean grain size is about 0.1 to 1μ, about 1 to 10 weight parts of carbon black preferably oxidized as coloring agent, and, if necessary, a charge control agent such as dye having frictional charging property are uneformly mixed and dispersed, then heated and kneaded. The mixture is crushed and classified to a mean grain size of about 5 to 20μ, and then, desirably, atomized into hot air, so that toner particles are formed into globules. Thereby, the unfixed toner image obtained by developing may be excellently transferred even by an electrostatic transfer method.
COPYRIGHT: (C)1980,JPO&Japio
JP54087112A 1979-07-09 1979-07-09 Electrophotographic developer Expired JPS5834829B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54087112A JPS5834829B2 (en) 1979-07-09 1979-07-09 Electrophotographic developer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54087112A JPS5834829B2 (en) 1979-07-09 1979-07-09 Electrophotographic developer

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP48095295A Division JPS5045639A (en) 1973-08-27 1973-08-27

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP5564980A Division JPS5652758A (en) 1980-04-25 1980-04-25 Static charge image developer

Publications (2)

Publication Number Publication Date
JPS5511298A true JPS5511298A (en) 1980-01-26
JPS5834829B2 JPS5834829B2 (en) 1983-07-29

Family

ID=13905864

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54087112A Expired JPS5834829B2 (en) 1979-07-09 1979-07-09 Electrophotographic developer

Country Status (1)

Country Link
JP (1) JPS5834829B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS604954A (en) * 1983-06-23 1985-01-11 Canon Inc Development method
US5533405A (en) * 1993-04-06 1996-07-09 Hoshino Gakki Co., Ltd. Sound comparison device for a drum

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6090231U (en) * 1983-11-29 1985-06-20 富士通株式会社 Paper sheet feeding device
JPS60228339A (en) * 1984-04-25 1985-11-13 Yamada Kikai Kogyo Kk Thin material supply device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS604954A (en) * 1983-06-23 1985-01-11 Canon Inc Development method
US5533405A (en) * 1993-04-06 1996-07-09 Hoshino Gakki Co., Ltd. Sound comparison device for a drum

Also Published As

Publication number Publication date
JPS5834829B2 (en) 1983-07-29

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