JPS5579456A - Dry type electrophotographic toner - Google Patents

Dry type electrophotographic toner

Info

Publication number
JPS5579456A
JPS5579456A JP15316778A JP15316778A JPS5579456A JP S5579456 A JPS5579456 A JP S5579456A JP 15316778 A JP15316778 A JP 15316778A JP 15316778 A JP15316778 A JP 15316778A JP S5579456 A JPS5579456 A JP S5579456A
Authority
JP
Japan
Prior art keywords
fine powder
hard fine
toner
dry type
electrophotographic toner
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
JP15316778A
Other languages
Japanese (ja)
Other versions
JPS6356537B2 (en
Inventor
Tokumasa Somiya
Yukio Ide
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 JP15316778A priority Critical patent/JPS5579456A/en
Publication of JPS5579456A publication Critical patent/JPS5579456A/en
Publication of JPS6356537B2 publication Critical patent/JPS6356537B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE: To increase the life of developer by containing the hard fine powder having been surface-treated with methyl violet-base or Fuchsine-base compound in the toner composed primarily of thermoplastic resins.
CONSTITUTION: The hard fine powder such as abrasive agent having been surface- treated with the compound shown by the formula shown in the drawing column is contained in the toner composed primarily of thermoplastic resins. With this arrangement, the charging system of the hard fine powder is approached to that of carrier particles, whereby the electrical deposition of the abrasive agent particles on the carrier surfaces is prevented and the life of the developer is increased without impairing the effect of the toner deposition prevention on photoreceptor.
COPYRIGHT: (C)1980,JPO&Japio
JP15316778A 1978-12-13 1978-12-13 Dry type electrophotographic toner Granted JPS5579456A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15316778A JPS5579456A (en) 1978-12-13 1978-12-13 Dry type electrophotographic toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15316778A JPS5579456A (en) 1978-12-13 1978-12-13 Dry type electrophotographic toner

Publications (2)

Publication Number Publication Date
JPS5579456A true JPS5579456A (en) 1980-06-14
JPS6356537B2 JPS6356537B2 (en) 1988-11-08

Family

ID=15556506

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15316778A Granted JPS5579456A (en) 1978-12-13 1978-12-13 Dry type electrophotographic toner

Country Status (1)

Country Link
JP (1) JPS5579456A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59123854A (en) * 1982-12-28 1984-07-17 Toshiba Corp Particle to be added to developer and its manufacture
US5061585A (en) * 1986-12-05 1991-10-29 Hoechst Aktiengesellschaft Blue coloring agent for electro-photographic copying processes with positive control action
US7442481B2 (en) 2004-04-27 2008-10-28 Xsys Print Solutions Us Llc Charge control agent

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59123854A (en) * 1982-12-28 1984-07-17 Toshiba Corp Particle to be added to developer and its manufacture
US5061585A (en) * 1986-12-05 1991-10-29 Hoechst Aktiengesellschaft Blue coloring agent for electro-photographic copying processes with positive control action
US7442481B2 (en) 2004-04-27 2008-10-28 Xsys Print Solutions Us Llc Charge control agent

Also Published As

Publication number Publication date
JPS6356537B2 (en) 1988-11-08

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