JPS565559A - Magnetic toner - Google Patents

Magnetic toner

Info

Publication number
JPS565559A
JPS565559A JP8102079A JP8102079A JPS565559A JP S565559 A JPS565559 A JP S565559A JP 8102079 A JP8102079 A JP 8102079A JP 8102079 A JP8102079 A JP 8102079A JP S565559 A JPS565559 A JP S565559A
Authority
JP
Japan
Prior art keywords
magnetic
binder
toners
fixing
magnetic 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.)
Pending
Application number
JP8102079A
Other languages
Japanese (ja)
Inventor
Masumi Asanae
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.)
Proterial Ltd
Original Assignee
Hitachi Metals 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 Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Priority to JP8102079A priority Critical patent/JPS565559A/en
Publication of JPS565559A publication Critical patent/JPS565559A/en
Pending legal-status Critical Current

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  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE: To develop and transfer magnetic latent images then pressure-fixing the same and obtain good images by specifying the thermal characteristics of the binder constituting the toners and the kind and compounding amount of magnetic powder.
CONSTITUTION: Synthetic or natural resin such as vinyl aromatic resin of glass transition point ≥50°C, softening point ≥100°C and ≥500 centipoises in melt viscosity around 160°C is selectively used for the binder forming the magnetic toners, according to purposes. The mixture composed of 50W20wt% binder and 50W80% magnetic powder such as Fe3O4 of ≤200 Oe in coercive force is kneaded and ground, thence those of average 10W25μ in grain size are classified. This yields the heat-roll-fixing magnetic toner having proper resistance value.
COPYRIGHT: (C)1981,JPO&Japio
JP8102079A 1979-06-27 1979-06-27 Magnetic toner Pending JPS565559A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8102079A JPS565559A (en) 1979-06-27 1979-06-27 Magnetic toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8102079A JPS565559A (en) 1979-06-27 1979-06-27 Magnetic toner

Publications (1)

Publication Number Publication Date
JPS565559A true JPS565559A (en) 1981-01-21

Family

ID=13734794

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8102079A Pending JPS565559A (en) 1979-06-27 1979-06-27 Magnetic toner

Country Status (1)

Country Link
JP (1) JPS565559A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500941A1 (en) * 1981-02-27 1982-09-03 Mita Industrial Co Ltd Magnetic developer for positively charged images - comprises vinyl! aromatic or acrylic! binder, finely divided magnetic particles, aliphatic carboxylic acid and pigment
JPS60173555A (en) * 1984-02-20 1985-09-06 Hitachi Metals Ltd Magnetic latent image developing magnetic toner
JPS6361265A (en) * 1986-09-01 1988-03-17 Hitachi Metals Ltd Magnetic toner for heat roll fixing type development of magnetic latent image
JPH0367269A (en) * 1990-04-20 1991-03-22 Konica Corp Heat roller fixing method
EP0901046A1 (en) * 1997-09-05 1999-03-10 Canon Kabushiki Kaisha Toner and image forming method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5045639A (en) * 1973-08-27 1975-04-23
JPS5196330A (en) * 1975-02-21 1976-08-24
JPS53103744A (en) * 1977-02-23 1978-09-09 Hitachi Metals Ltd Magnetic toner composite
JPS53118057A (en) * 1977-03-25 1978-10-16 Hitachi Metals Ltd Magnetic toner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5045639A (en) * 1973-08-27 1975-04-23
JPS5196330A (en) * 1975-02-21 1976-08-24
JPS53103744A (en) * 1977-02-23 1978-09-09 Hitachi Metals Ltd Magnetic toner composite
JPS53118057A (en) * 1977-03-25 1978-10-16 Hitachi Metals Ltd Magnetic toner

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500941A1 (en) * 1981-02-27 1982-09-03 Mita Industrial Co Ltd Magnetic developer for positively charged images - comprises vinyl! aromatic or acrylic! binder, finely divided magnetic particles, aliphatic carboxylic acid and pigment
JPS60173555A (en) * 1984-02-20 1985-09-06 Hitachi Metals Ltd Magnetic latent image developing magnetic toner
JPS6361265A (en) * 1986-09-01 1988-03-17 Hitachi Metals Ltd Magnetic toner for heat roll fixing type development of magnetic latent image
JPH0367269A (en) * 1990-04-20 1991-03-22 Konica Corp Heat roller fixing method
EP0901046A1 (en) * 1997-09-05 1999-03-10 Canon Kabushiki Kaisha Toner and image forming method

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