JPS5675660A - Liquid developer - Google Patents
Liquid developerInfo
- Publication number
- JPS5675660A JPS5675660A JP15198279A JP15198279A JPS5675660A JP S5675660 A JPS5675660 A JP S5675660A JP 15198279 A JP15198279 A JP 15198279A JP 15198279 A JP15198279 A JP 15198279A JP S5675660 A JPS5675660 A JP S5675660A
- Authority
- JP
- Japan
- Prior art keywords
- pigments
- quinacridone
- alkali metal
- metal salt
- liquid 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
Links
Landscapes
- Liquid Developers In Electrophotography (AREA)
Abstract
PURPOSE: To improve dispersibility of pigments, high-density image formation, etc. and eliminate the need for addition of any charge controlling agent, in a liquid developer for electrophotographic color copies etc., by keeping the weight ratio of rhodamine-base pigments and quinacridone-base pigments in a specific range.
CONSTITUTION: The toner contg. the rhodamine-base pigments expressed by the formula I [R1WR5 are H, alkyl of C1WC4, X- is anion of halogen, etc., B is halogen, sulfo (or its alkali metal salt), carboxy (or its alkali metal salt, alkyl ester), D is H, sulfo (or its alkali metal salt), n is 0 when B is -SO- 3 or -COO- and 1 at the other group] and the linear trans-quinacridone of β and α of the quinacridone-base pigments expressed by the formula II at 1:1W1:15 in the weight ratio thereof to the former pigments, is used for the liquid developer. In this way, the developer which is dispersed stably for a long period of time and is superior in chargeability, color tone and developing characteristic is obtainable.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15198279A JPS5675660A (en) | 1979-11-26 | 1979-11-26 | Liquid developer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15198279A JPS5675660A (en) | 1979-11-26 | 1979-11-26 | Liquid developer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5675660A true JPS5675660A (en) | 1981-06-22 |
Family
ID=15530468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15198279A Pending JPS5675660A (en) | 1979-11-26 | 1979-11-26 | Liquid developer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5675660A (en) |
-
1979
- 1979-11-26 JP JP15198279A patent/JPS5675660A/en active Pending
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