JPS5454640A - Production of magnetic toner - Google Patents

Production of magnetic toner

Info

Publication number
JPS5454640A
JPS5454640A JP12180177A JP12180177A JPS5454640A JP S5454640 A JPS5454640 A JP S5454640A JP 12180177 A JP12180177 A JP 12180177A JP 12180177 A JP12180177 A JP 12180177A JP S5454640 A JPS5454640 A JP S5454640A
Authority
JP
Japan
Prior art keywords
resin
magnetic toner
under stirring
grain sizes
magnetic
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
JP12180177A
Other languages
Japanese (ja)
Other versions
JPS6028347B2 (en
Inventor
Tetsuo Hasegawa
Shigeo Kato
Yoshihiro Nishikawa
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Priority to JP52121801A priority Critical patent/JPS6028347B2/en
Publication of JPS5454640A publication Critical patent/JPS5454640A/en
Publication of JPS6028347B2 publication Critical patent/JPS6028347B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: to readily produce spherical insulation type magnetic toner comprising evenly dispersing fine magnetic material in resin by allowing the magnetic material and vehicle resin to coprecipitate and deposit under stirring.
CONSTITUTION: Resin, scuh as polyvinly pyridine, which is soluble in acidic aqueous solutions and depostis in alkalinity is dissolved in an aqueous solution of magnetic metal salt such as FeSO4 and Fe2(SO4)2. Next, this solution is heated and is added and mixed with an aqueous NaOH solution under stirring while air is being blown to be controlled to 9 to 12 to pH, then the gelled matter of the fine powder Fe3O4 and resin is formed. This gelled matter is filtered out and is further washed with water, whereby the spherical magnetic toner is obtained. Thereby, controlling of grain sizes is readily accomplished, grain sizes are made uniform and there is virtually no need for classification
COPYRIGHT: (C)1979,JPO&Japio
JP52121801A 1977-10-11 1977-10-11 Method for manufacturing magnetic toner Expired JPS6028347B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52121801A JPS6028347B2 (en) 1977-10-11 1977-10-11 Method for manufacturing magnetic toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52121801A JPS6028347B2 (en) 1977-10-11 1977-10-11 Method for manufacturing magnetic toner

Publications (2)

Publication Number Publication Date
JPS5454640A true JPS5454640A (en) 1979-05-01
JPS6028347B2 JPS6028347B2 (en) 1985-07-04

Family

ID=14820251

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52121801A Expired JPS6028347B2 (en) 1977-10-11 1977-10-11 Method for manufacturing magnetic toner

Country Status (1)

Country Link
JP (1) JPS6028347B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4495267A (en) * 1982-03-26 1985-01-22 Mita Industrial Co., Ltd. Magnetic toner having improved humidity dependency

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6082744A (en) * 1983-10-13 1985-05-10 Matsushita Electric Ind Co Ltd Hot water supplier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4495267A (en) * 1982-03-26 1985-01-22 Mita Industrial Co., Ltd. Magnetic toner having improved humidity dependency

Also Published As

Publication number Publication date
JPS6028347B2 (en) 1985-07-04

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