JPS5538524A - Toner composition for electrophotography - Google Patents

Toner composition for electrophotography

Info

Publication number
JPS5538524A
JPS5538524A JP11126778A JP11126778A JPS5538524A JP S5538524 A JPS5538524 A JP S5538524A JP 11126778 A JP11126778 A JP 11126778A JP 11126778 A JP11126778 A JP 11126778A JP S5538524 A JPS5538524 A JP S5538524A
Authority
JP
Japan
Prior art keywords
developer
toner
60pts
acid value
copying
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
JP11126778A
Other languages
Japanese (ja)
Other versions
JPH0468628B2 (en
Inventor
Takayoshi Aoki
Katsuhiro Tsuda
Keizo Yamamoto
Seiichi Shimizu
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.)
DIC Corp
Original Assignee
Dainippon Ink and Chemicals 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 Dainippon Ink and Chemicals Co Ltd filed Critical Dainippon Ink and Chemicals Co Ltd
Priority to JP11126778A priority Critical patent/JPS5538524A/en
Publication of JPS5538524A publication Critical patent/JPS5538524A/en
Publication of JPH0468628B2 publication Critical patent/JPH0468628B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To improve the durability of developer and obtain rhe copied matter of high densities free from any fog in the background by using the toner comprising containing polyester of acid value within a range of 3W13 at more than 60pts.wt in 75W99pts.wt of the total binder resin.
CONSTITUTION: The toner containing more than 60pts.wt of polyester of acid value 3W13, preferably 5W10, softening point 55W160°C, mean molecular weight 1000W100000 together with less than 35pts.wt of other binder, 1W15 pts. wt of coloring agents and other assistants is produced. Carrier particles are used at 10W 100 times weight the toner in producing the developer. In this way, required charging quantity is reached rapidly and the performances close to those at the manufacture are maintained even after the developer has been left standing for a long time while the copying mahcine is not in use for a long period of time, thus the good quality images which do not cause degradation in image density despite multiple copying of more than 10,000 sheets may be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP11126778A 1978-09-12 1978-09-12 Toner composition for electrophotography Granted JPS5538524A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11126778A JPS5538524A (en) 1978-09-12 1978-09-12 Toner composition for electrophotography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11126778A JPS5538524A (en) 1978-09-12 1978-09-12 Toner composition for electrophotography

Publications (2)

Publication Number Publication Date
JPS5538524A true JPS5538524A (en) 1980-03-18
JPH0468628B2 JPH0468628B2 (en) 1992-11-02

Family

ID=14556863

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11126778A Granted JPS5538524A (en) 1978-09-12 1978-09-12 Toner composition for electrophotography

Country Status (1)

Country Link
JP (1) JPS5538524A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57130050A (en) * 1980-12-24 1982-08-12 Xerox Corp Developer composition and image formation
JPS61284771A (en) * 1985-06-10 1986-12-15 Canon Inc Image forming method
JPS6368853A (en) * 1986-09-10 1988-03-28 Kao Corp Electrophotographic developer composition
JPS6368854A (en) * 1986-09-10 1988-03-28 Kao Corp Electrophotographic developer composition
JPS6368852A (en) * 1986-09-10 1988-03-28 Kao Corp Electrophotographic developer composition
JPH0363065B2 (en) * 1986-09-10 1991-09-27 Kao Corp
US7435519B2 (en) 2004-01-27 2008-10-14 Ricoh Printing Systems, Ltd. Electrophotographic toner and image forming apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53103744A (en) * 1977-02-23 1978-09-09 Hitachi Metals Ltd Magnetic toner composite
JPS5486342A (en) * 1977-12-21 1979-07-09 Hitachi Chemical Co Ltd Toner for static charge picture development

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53103744A (en) * 1977-02-23 1978-09-09 Hitachi Metals Ltd Magnetic toner composite
JPS5486342A (en) * 1977-12-21 1979-07-09 Hitachi Chemical Co Ltd Toner for static charge picture development

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57130050A (en) * 1980-12-24 1982-08-12 Xerox Corp Developer composition and image formation
JPH0358108B2 (en) * 1980-12-24 1991-09-04 Xerox Corp
JPS61284771A (en) * 1985-06-10 1986-12-15 Canon Inc Image forming method
JPH0567032B2 (en) * 1985-06-10 1993-09-24 Canon Kk
JPS6368853A (en) * 1986-09-10 1988-03-28 Kao Corp Electrophotographic developer composition
JPS6368854A (en) * 1986-09-10 1988-03-28 Kao Corp Electrophotographic developer composition
JPS6368852A (en) * 1986-09-10 1988-03-28 Kao Corp Electrophotographic developer composition
JPH0363065B2 (en) * 1986-09-10 1991-09-27 Kao Corp
JPH0363068B2 (en) * 1986-09-10 1991-09-27 Kao Corp
JPH0363067B2 (en) * 1986-09-10 1991-09-27 Kao Corp
JPH0363069B2 (en) * 1986-09-10 1991-09-27 Kao Corp
US7435519B2 (en) 2004-01-27 2008-10-14 Ricoh Printing Systems, Ltd. Electrophotographic toner and image forming apparatus

Also Published As

Publication number Publication date
JPH0468628B2 (en) 1992-11-02

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