JPS5492326A - Electrophotographic carrier material - Google Patents

Electrophotographic carrier material

Info

Publication number
JPS5492326A
JPS5492326A JP15893477A JP15893477A JPS5492326A JP S5492326 A JPS5492326 A JP S5492326A JP 15893477 A JP15893477 A JP 15893477A JP 15893477 A JP15893477 A JP 15893477A JP S5492326 A JPS5492326 A JP S5492326A
Authority
JP
Japan
Prior art keywords
melting point
polymer
fluoro polymer
fluoro
carrier material
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
JP15893477A
Other languages
Japanese (ja)
Other versions
JPS6145826B2 (en
Inventor
Naoyuki Ushiyama
Itsuo Ikeda
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 JP15893477A priority Critical patent/JPS5492326A/en
Publication of JPS5492326A publication Critical patent/JPS5492326A/en
Publication of JPS6145826B2 publication Critical patent/JPS6145826B2/ja
Granted legal-status Critical Current

Links

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  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE: To avert the cohesion of carrier material at the producing of the fluoro polymer covered carrier material by forming the fluoro polymer material to be deposited on core material with a low melting point polymer intermediate layer and a high melting point polymer surface layer.
CONSTITUTION: A fluoro polymer of a relatively low melting point such as copolymer of tetrafluoroethylene and hexafluoropropylene is coated on the core material composed of sand of about 50 to 100μ in particle size, glass beads, ferromagnetic material powder, etc., following to which a fluoro polymer of a high melting point such as tetrafluoroethylene homopolymer is further coated thereof, thence the materil is put in an electric furnace to allow the low melting point fluoro polymer layer to melt thereby letting the core material and high melting point fluoropolymer layer be bonded.
COPYRIGHT: (C)1979,JPO&Japio
JP15893477A 1977-12-29 1977-12-29 Electrophotographic carrier material Granted JPS5492326A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15893477A JPS5492326A (en) 1977-12-29 1977-12-29 Electrophotographic carrier material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15893477A JPS5492326A (en) 1977-12-29 1977-12-29 Electrophotographic carrier material

Publications (2)

Publication Number Publication Date
JPS5492326A true JPS5492326A (en) 1979-07-21
JPS6145826B2 JPS6145826B2 (en) 1986-10-09

Family

ID=15682522

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15893477A Granted JPS5492326A (en) 1977-12-29 1977-12-29 Electrophotographic carrier material

Country Status (1)

Country Link
JP (1) JPS5492326A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5796355A (en) * 1980-12-08 1982-06-15 Ricoh Co Ltd Carrier for electrophotographic developer
JPS62153962A (en) * 1985-12-27 1987-07-08 Konishiroku Photo Ind Co Ltd Carrier for developing electrostatic image
JPH02124582A (en) * 1988-11-02 1990-05-11 Kao Corp Positively chargeable dry developer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6342219U (en) * 1986-09-08 1988-03-19

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5796355A (en) * 1980-12-08 1982-06-15 Ricoh Co Ltd Carrier for electrophotographic developer
JPS6355702B2 (en) * 1980-12-08 1988-11-04 Ricoh Kk
JPS62153962A (en) * 1985-12-27 1987-07-08 Konishiroku Photo Ind Co Ltd Carrier for developing electrostatic image
JPH0453431B2 (en) * 1985-12-27 1992-08-26 Konishiroku Photo Ind
JPH02124582A (en) * 1988-11-02 1990-05-11 Kao Corp Positively chargeable dry developer

Also Published As

Publication number Publication date
JPS6145826B2 (en) 1986-10-09

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