JPS5670557A - Liquid developer for electrostatic photograph - Google Patents

Liquid developer for electrostatic photograph

Info

Publication number
JPS5670557A
JPS5670557A JP14796279A JP14796279A JPS5670557A JP S5670557 A JPS5670557 A JP S5670557A JP 14796279 A JP14796279 A JP 14796279A JP 14796279 A JP14796279 A JP 14796279A JP S5670557 A JPS5670557 A JP S5670557A
Authority
JP
Japan
Prior art keywords
toner
concd
liquid developer
isoparaffin
developer
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
JP14796279A
Other languages
Japanese (ja)
Inventor
Giichi Kaneko
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 JP14796279A priority Critical patent/JPS5670557A/en
Publication of JPS5670557A publication Critical patent/JPS5670557A/en
Pending legal-status Critical Current

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  • Liquid Developers In Electrophotography (AREA)

Abstract

PURPOSE: To prevent secular change and deterioration owing to repeated uses and form stable images by containing metal salt of cinnamic acid having the specific substituents as a polarity control agent into the toner.
CONSTITUTION: The compound, such as Mn p-hexyl cinnamate or the like, expressed by the formula (R1 is aliphatic hydrocarbon of C6WC12, M is uni-Wtrivalent metals), is added at about 10×10-4W5×10-1 to 1pt.wt. coloring agent such as carbon black, and the mixture is kneaded with a binder such as polylauryl methacrylate and an isoparaffin hydrocarbon solvent, whereby the concd. toner is prepared. This concd. toner is diluted with said isoparaffin solvent, whereby a liquid developer is prepd. The resulted developer is stable for a long period of time and provides the sharp images equal to those in the initial production.
COPYRIGHT: (C)1981,JPO&Japio
JP14796279A 1979-11-15 1979-11-15 Liquid developer for electrostatic photograph Pending JPS5670557A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14796279A JPS5670557A (en) 1979-11-15 1979-11-15 Liquid developer for electrostatic photograph

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14796279A JPS5670557A (en) 1979-11-15 1979-11-15 Liquid developer for electrostatic photograph

Publications (1)

Publication Number Publication Date
JPS5670557A true JPS5670557A (en) 1981-06-12

Family

ID=15442016

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14796279A Pending JPS5670557A (en) 1979-11-15 1979-11-15 Liquid developer for electrostatic photograph

Country Status (1)

Country Link
JP (1) JPS5670557A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5346794A (en) * 1992-03-03 1994-09-13 Hodogaya Chemical Co., Ltd. Electrophotographic toner
US5378573A (en) * 1992-04-22 1995-01-03 Hodogaya Chemical Co., Ltd. Electrophotographic toner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5346794A (en) * 1992-03-03 1994-09-13 Hodogaya Chemical Co., Ltd. Electrophotographic toner
US5378573A (en) * 1992-04-22 1995-01-03 Hodogaya Chemical Co., Ltd. Electrophotographic toner

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