JPS5595955A - Electrostatically photographic liquid developer - Google Patents

Electrostatically photographic liquid developer

Info

Publication number
JPS5595955A
JPS5595955A JP355579A JP355579A JPS5595955A JP S5595955 A JPS5595955 A JP S5595955A JP 355579 A JP355579 A JP 355579A JP 355579 A JP355579 A JP 355579A JP S5595955 A JPS5595955 A JP S5595955A
Authority
JP
Japan
Prior art keywords
developer
alkyl
electrostatically
liquid developer
resin
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
JP355579A
Other languages
Japanese (ja)
Inventor
Yoji Ide
Toshiyuki Kawanishi
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 JP355579A priority Critical patent/JPS5595955A/en
Publication of JPS5595955A publication Critical patent/JPS5595955A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To form a high-density clear image free from a ground stain by using a specified alkylamine carboxylate as a polarity controller to prevent a deterioration of a developer with the passage of time.
CONSTITUTION: Laurylamine palmitate or the like represented by the formula (where R1 is 1W18C alkyl; R2 is H or 1W18C alkyl; and one or more of R1 and R2 are 1W18C alkyl) is added as a polarity controller to an electrostatically photographic liquid developer. The amt. of the controller used is about 0.003W1pt.wt. to 1pt.wt. of a coloring agent or resin. The developer is prepared as follows: for example, the coloring agent and resin are kneaded with a little carrier fluid, and the resulting concentrated toner is dispersed in much carrier fluid such as isoparaffin together with an alkylamine carboxylate. This developer does not deteriorate over a long time and gives a high-density clear image.
COPYRIGHT: (C)1980,JPO&Japio
JP355579A 1979-01-16 1979-01-16 Electrostatically photographic liquid developer Pending JPS5595955A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP355579A JPS5595955A (en) 1979-01-16 1979-01-16 Electrostatically photographic liquid developer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP355579A JPS5595955A (en) 1979-01-16 1979-01-16 Electrostatically photographic liquid developer

Publications (1)

Publication Number Publication Date
JPS5595955A true JPS5595955A (en) 1980-07-21

Family

ID=11560664

Family Applications (1)

Application Number Title Priority Date Filing Date
JP355579A Pending JPS5595955A (en) 1979-01-16 1979-01-16 Electrostatically photographic liquid developer

Country Status (1)

Country Link
JP (1) JPS5595955A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4594305A (en) * 1984-06-15 1986-06-10 Hoechst Aktiengesellschaft Liquid developer and charge control substance suitable therefor
JPS6234170A (en) * 1985-08-08 1987-02-14 Mitsubishi Paper Mills Ltd Electrophotographic liquid developer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4594305A (en) * 1984-06-15 1986-06-10 Hoechst Aktiengesellschaft Liquid developer and charge control substance suitable therefor
JPS6234170A (en) * 1985-08-08 1987-02-14 Mitsubishi Paper Mills Ltd Electrophotographic liquid developer

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