Claims
- 1. A liquid developer transporting device disposed between a reservoir accommodating a liquid developer comprising a fluid medium, a charge controlling agent and electrically charged toner particles dispersed therein and an electrostatic latent image carrying member, wherein said toner particles comprises a resin and a colorant, comprising:
- (a) a first developer carrying member;
- (b) a supplier which supplies a liquid developer accommodated in the reservoir to the first developer carrying member;
- (c) a first deposition device which electrically deposits toner particles on the first developer carrying member;
- (d) a second developer carrying member confronting the first developer carrying member;
- (e) a second deposition device which electrically deposits toner particles on the second developer carrying member at the confrontation area between first and second developer carrying members;
- (f) a third liquid developer carrying member confronting with the second developer carrying member; and
- (g) a third deposition device which electrically deposits toner particles on the third developer carrying member at the confrontation area between second and third developer carrying members.
- 2. The transporting device as claimed in claim 1 wherein said first deposition device comprising:
- (a) an electrode confronting the first carrying member; and
- (b) an electric power source which applies a voltage between said electrode and said first carrying member.
- 3. The transporting device as claimed in claim 2 wherein said first developer carrying member and said electrode are immersed in the liquid developer accommodated in the reservoir, and said reservoir serves as the supplier.
- 4. The transporting device as claimed in claim 2 wherein the area of confrontation between the electrode and the first developer carrying member is 3 mm long or more.
- 5. The transporting device as claimed in claim 1 wherein said second deposition device comprises an electric power source which applies a voltage between said first and second developer carrying members.
- 6. The transporting device as claimed in claim 1 wherein said second developer carrying member confronts said latent image carrying member and contacts the liquid developer carried thereon with the latent image carrying member.
- 7. The transporting device as claimed in claim 1 wherein said third developer carrying member confronts said latent image carrying member and contacts the liquid developer carried thereon with the latent image carrying member.
- 8. The transporting device as claimed in claim 1 wherein said supplier comprises a developer drawing member which supplies liquid developer by contacting the surface thereof with the liquid developer accommodating in the reservoir and mechanically drawing the liquid developer.
- 9. The transporting device as claimed in claim 1 wherein said first and second developer carrying members are electrically conductive rollers.
- 10. The transporting device as claimed in claim 1 wherein said first and second deposition devices apply at least one kind of electric voltage selected from the group consisting of direct current voltage, alternating current voltage overlaid on direct current voltage and pulse voltage overlaid on direct current voltage.
- 11. The transporting device as claimed in claim 1, wherein said charge controlling agent comprises, a compound selected from the group consisting of metal salts of organic acids, metal salts of fatty acids, metal salts of organic acid ester, soluble polymers, surface active agents, and nitrogen compounds.
- 12. The transporting device as claimed in claim 1, wherein said liquid developer contains said charge controlling agent in an amount of 0.0001 to 10 percent by weight relative to the fluid medium.
- 13. The transporting device as claimed in claim 1, wherein said toner particles have volume average particle size of 0.5 .mu.m to 5 .mu.m.
- 14. A liquid developer transporting device disposed between a reservoir accommodating a liquid developer comprising a fluid medium, a charge controlling agent and electrically charged toner particles dispersed therein and an electrostatic latent image carrying member, wherein said toner particles comprise a resin and a colorant, comprising:
- (a) a plurality of developer carrying members confront each other sequentially;
- (b) a supplier which supplies a liquid developer accommodated in the reservoir; and
- (c) a deposition device which electrically deposits toner particles on the developer carrying member nearest to or in the reservoir and wherein electrodeposition is repeated between the remaining developer carrying members one after another so as to transport toner particles, and wherein each of gaps between developer carrying members confronting each other decrease in accordance with approaching direction to the electrostatic latent image carrying member along to the developer transportation path.
- 15. The transporting device as claimed in claim 1 wherein said developer carrying members are electrically conductive rollers.
- 16. The transporting device as claimed in claim 1 wherein said developer carrying members are arranged in the horizontal direction.
- 17. The transporting device as claimed in claim 1 which is disposed at the side of the electrostatic latent image carrying member.
- 18. The transporting device as claimed in claim 14 wherein said electrodeposition device repeats the electrodeposition out of the reservoir.
- 19. The transporting device as claimed in claim 14 wherein said electrodeposition device applies at least one kind of electric voltage selected from the group consisting of direct current voltage, alternating voltage overlaid on direct current voltage and pulse voltage overlaid on direct current voltage.
- 20. A liquid developing device for developing an electrostatic latent image by a liquid developer comprising a fluid medium, a charge controlling agent and toner particles dispersed therein, wherein said toner particles comprise a resin and a colorant, comprising:
- (a) a developer carrying member which contacts a liquid developer carried thereon with an electrostatic latent image carrying member;
- (b) a toner deposition member confronting the developer carrying member;
- (c) a first deposition device which electrically deposits toner particles from a liquid developer on the toner deposition member;
- (d) a second deposition device which electrically deposits toner particles on the developer carrying member at the confrontation area between said developer carrying member and toner deposition member, and wherein said developer carrying members and toner deposition members are electrically conductive rollers; and
- (e) a liquid sprayer which sprays a cleaning solution to the developer carrying members.
- 21. The developing device as claimed in claim 20 which further comprises a remover which removes the residual developer from the developer carrying member.
Priority Claims (1)
Number |
Date |
Country |
Kind |
7-104081 |
Apr 1995 |
JPX |
|
Parent Case Info
This is a continuation application of application Ser. No. 08/638,041, filed Apr. 26, 1996, now abandoned.
US Referenced Citations (13)
Foreign Referenced Citations (4)
Number |
Date |
Country |
45-35759 |
Nov 1970 |
JPX |
2-302765 |
Dec 1990 |
JPX |
6-222677 |
Aug 1994 |
JPX |
1 250 214 |
Oct 1971 |
GBX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
638041 |
Apr 1996 |
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