JPS559512A - Magnetic toner - Google Patents

Magnetic toner

Info

Publication number
JPS559512A
JPS559512A JP8154678A JP8154678A JPS559512A JP S559512 A JPS559512 A JP S559512A JP 8154678 A JP8154678 A JP 8154678A JP 8154678 A JP8154678 A JP 8154678A JP S559512 A JPS559512 A JP S559512A
Authority
JP
Japan
Prior art keywords
magnetization
zero
magnetic
magnetic toner
powder
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
JP8154678A
Other languages
Japanese (ja)
Other versions
JPS597379B2 (en
Inventor
Yukio Suzuki
Toshiharu Nakagawa
Tsutomu Kubo
Toshihiko Oguchi
Tsutomu Uehara
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP53081546A priority Critical patent/JPS597379B2/en
Publication of JPS559512A publication Critical patent/JPS559512A/en
Publication of JPS597379B2 publication Critical patent/JPS597379B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE: To enable conveying characteristic and fluidity to be improved even in a high resistance state and further enable good images of high transfer efficiency free from any fog to be formed by restricting residual magnetization, coercive force and magnetization of magnetic powder to respectively specific ranges.
CONSTITUTION: Magnetic powder of 1 to 5 in ratio of long axis/short axis, particularly powder of Co-substituted Fe3O4, binder resin and if necessary, electric resistance controller such as carbon black are thermally kneaded, after which the mixture is disintegrated and classified. The magnetic toner in which the value of magnetization of the time when the magnetic field applied from zero to prositive direction to the resultant magnetic toner is reduced and becomes zero after saturation magnetization of 10 to 20emu/g and the value of the intensity of the magnetic field when it is applied from zero to further negative direction and magnetization becomes zero is within a range of 150 to 450Oe is used for developing of electrostatic latent images.
COPYRIGHT: (C)1980,JPO&Japio
JP53081546A 1978-07-05 1978-07-05 magnetic toner Expired JPS597379B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53081546A JPS597379B2 (en) 1978-07-05 1978-07-05 magnetic toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53081546A JPS597379B2 (en) 1978-07-05 1978-07-05 magnetic toner

Publications (2)

Publication Number Publication Date
JPS559512A true JPS559512A (en) 1980-01-23
JPS597379B2 JPS597379B2 (en) 1984-02-17

Family

ID=13749282

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53081546A Expired JPS597379B2 (en) 1978-07-05 1978-07-05 magnetic toner

Country Status (1)

Country Link
JP (1) JPS597379B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5724950A (en) * 1980-07-22 1982-02-09 Fuji Xerox Co Ltd Magnetic toner composition

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63128918U (en) * 1987-02-17 1988-08-23

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS495035A (en) * 1972-03-16 1974-01-17
JPS5045639A (en) * 1973-08-27 1975-04-23
JPS5092137A (en) * 1973-12-14 1975-07-23
JPS50117432A (en) * 1974-02-16 1975-09-13

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS495035A (en) * 1972-03-16 1974-01-17
JPS5045639A (en) * 1973-08-27 1975-04-23
JPS5092137A (en) * 1973-12-14 1975-07-23
JPS50117432A (en) * 1974-02-16 1975-09-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5724950A (en) * 1980-07-22 1982-02-09 Fuji Xerox Co Ltd Magnetic toner composition
JPS6354174B2 (en) * 1980-07-22 1988-10-27 Fuji Xerox Co Ltd

Also Published As

Publication number Publication date
JPS597379B2 (en) 1984-02-17

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