JPS57191650A - Electrophotographic dry type developer - Google Patents
Electrophotographic dry type developerInfo
- Publication number
- JPS57191650A JPS57191650A JP56076780A JP7678081A JPS57191650A JP S57191650 A JPS57191650 A JP S57191650A JP 56076780 A JP56076780 A JP 56076780A JP 7678081 A JP7678081 A JP 7678081A JP S57191650 A JPS57191650 A JP S57191650A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- carrier
- combining
- type
- long
- 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
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/10—Developers with toner particles characterised by carrier particles
- G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto
- G03G9/1132—Macromolecular components of coatings
- G03G9/1135—Macromolecular components of coatings obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- G03G9/1136—Macromolecular components of coatings obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon atoms
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/09—Colouring agents for toner particles
- G03G9/0906—Organic dyes
- G03G9/091—Azo dyes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
PURPOSE:To obtain a long-lived dry tye developer capable of charging a toner uniformly and sufficiently to a negative polarity, by combining a carrier coated on the surface by a specified silicone resin with a toner containing a metallic complex salt type monoazo dye soluble in an organic solvent. CONSTITUTION:A silicone resin film is formed by adding a toluene or the like solution of a silicon resin of a baking type or a room temperature curable type represented by the formulaI(in which R is H, halogen, hydroxy, methoxy, 1-4C lower alkyl, or phenyl) to a carrier of iron powder or the like by the fluidization method or the like. On the other hand, a toner is prepared by adding a metallic complex type monoazo dye represented by the formula II and carbon black, etc. to polystyrene or its copolymer. A developer obtained by combining said carrier with said toner does not become ''spent'', that is, does not cause deterioration of chargeability due to attachment of the toner resin to the surface of the carrier and formation of a film, after long-term uses, and has high durability.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56076780A JPS57191650A (en) | 1981-05-22 | 1981-05-22 | Electrophotographic dry type developer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56076780A JPS57191650A (en) | 1981-05-22 | 1981-05-22 | Electrophotographic dry type developer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57191650A true JPS57191650A (en) | 1982-11-25 |
JPH0355823B2 JPH0355823B2 (en) | 1991-08-26 |
Family
ID=13615104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56076780A Granted JPS57191650A (en) | 1981-05-22 | 1981-05-22 | Electrophotographic dry type developer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57191650A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59124349A (en) * | 1982-12-29 | 1984-07-18 | Fujitsu Ltd | Carrier for developer for magnetic brush system |
US4584254A (en) * | 1984-03-27 | 1986-04-22 | Ricoh Company, Ltd. | Silicone resin coated carrier particles for use in a two-component dry-type developer |
US4590141A (en) * | 1982-04-08 | 1986-05-20 | Ricoh Company | Carrier particles for use in a two-component dry-type developer for developing latent electrostatic images |
JPS61204643A (en) * | 1985-03-08 | 1986-09-10 | Ricoh Co Ltd | Carrier for electrostatic latent image developer |
US5166041A (en) * | 1990-07-23 | 1992-11-24 | Showa Denko K.K. | Near infrared ray-decolorizable recording material |
US5230980A (en) * | 1989-12-26 | 1993-07-27 | Xerox Corporation | Treating carrier particles with coatings containing charge enhancing additives |
US5846682A (en) * | 1993-03-02 | 1998-12-08 | Showa Denko K.K. | Light decolorizable recording material, ink and toner |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4927229A (en) * | 1972-07-01 | 1974-03-11 | ||
JPS52123622A (en) * | 1976-04-09 | 1977-10-18 | Canon Inc | Developing agent mixture |
JPS55127569A (en) * | 1979-03-24 | 1980-10-02 | Konishiroku Photo Ind Co Ltd | Carrier for electrostatic image development |
-
1981
- 1981-05-22 JP JP56076780A patent/JPS57191650A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4927229A (en) * | 1972-07-01 | 1974-03-11 | ||
JPS52123622A (en) * | 1976-04-09 | 1977-10-18 | Canon Inc | Developing agent mixture |
JPS55127569A (en) * | 1979-03-24 | 1980-10-02 | Konishiroku Photo Ind Co Ltd | Carrier for electrostatic image development |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4590141A (en) * | 1982-04-08 | 1986-05-20 | Ricoh Company | Carrier particles for use in a two-component dry-type developer for developing latent electrostatic images |
JPS59124349A (en) * | 1982-12-29 | 1984-07-18 | Fujitsu Ltd | Carrier for developer for magnetic brush system |
US4584254A (en) * | 1984-03-27 | 1986-04-22 | Ricoh Company, Ltd. | Silicone resin coated carrier particles for use in a two-component dry-type developer |
JPS61204643A (en) * | 1985-03-08 | 1986-09-10 | Ricoh Co Ltd | Carrier for electrostatic latent image developer |
US5230980A (en) * | 1989-12-26 | 1993-07-27 | Xerox Corporation | Treating carrier particles with coatings containing charge enhancing additives |
US5166041A (en) * | 1990-07-23 | 1992-11-24 | Showa Denko K.K. | Near infrared ray-decolorizable recording material |
US5846682A (en) * | 1993-03-02 | 1998-12-08 | Showa Denko K.K. | Light decolorizable recording material, ink and toner |
Also Published As
Publication number | Publication date |
---|---|
JPH0355823B2 (en) | 1991-08-26 |
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