التفاصيل البيبلوغرافية
| العنوان: |
Intermediate transfer medium, film forming liquid for the intermediate transfer medium and image forming apparatus using intermediate transfer medium |
| Document Number: |
20050136245 |
| تاريخ النشر: |
June 23, 2005 |
| Appl. No: |
11/010328 |
| Application Filed: |
December 14, 2004 |
| مستخلص: |
An intermediate transfer medium including a layer which includes an acidic carbon black including volatile components of from 3.5 to 8.0% by weight; at least one of a water soluble resin having a weight average molecular weight of from 3,000 to 30,000, and a resin dispersant having a weight average molecular weight of from 3,000 to 300,000 which is selected from the group consisting of polyamide acids, polyimides, and block copolymer including a unit containing at least one of a polyamide acid and a polyimide; and a binder resin, wherein a weight ratio (CB/R) of the carbon black (CB) to the at least one (R) of the water soluble resin and the resin dispersant is from 3/1 to 10/1. A film forming liquid for use in preparing the layer, and an image forming apparatus using the intermediate transfer medium are also provided. |
| Inventors: |
Arita, Hitoshi (Yokohama-shi, JP); Hirano, Yasuo (Yokohama-shi, JP) |
| Claim: |
1. An intermediate transfer medium comprising: a layer comprising: an acidic carbon black including volatile components of from 3.5 to 8.0% by weight; at least one of a water soluble resin having a weight average molecular weight of from 3,000 to 30,000, and a resin dispersant having a weight average molecular weight of from 3,000 to 300,000 which is selected from the group consisting of polyamide acids, polyimides, and block copolymers including a unit containing at least one of a polyamide acid and a polyimide; and a binder resin, wherein a weight ratio (CB/R) of the carbon black (CB) to the at least one (R) of the water soluble resin and the resin dispersant is from 3/1 to 10/1. |
| Claim: |
2. The intermediate transfer medium according to claim 1, wherein the layer comprises a water soluble resin having a weight molecular weight of from 5,000 to 15,000. |
| Claim: |
3. The intermediate transfer medium according to claim 1, wherein the layer comprises a water soluble resin selected from the group consisting of acrylic acid-butyl acrylate-methyl methacrylate copolymers, styrene-maleic acid ester-maleic anhydride copolymers, and polyvinyl pyrrolidone. |
| Claim: |
4. The intermediate transfer medium according to claim 1, wherein the layer includes a water soluble resin, and wherein the weight ratio (CB/R) of the carbon black (CB) to the water soluble resin (R) is from 10/3 to 10/1. |
| Claim: |
5. The intermediate transfer medium according to claim 1, wherein the layer comprises a resin dispersant having a weight molecular weight of from 5,000 to 150,000. |
| Claim: |
6. The intermediate transfer medium according to claim 1, wherein the layer comprises a resin dispersant comprising a repeat unit having a biphenyl skeleton in an amount not less than 40% by mole. |
| Claim: |
7. The intermediate transfer medium according to claim 1, wherein the outermost layer includes a resin dispersant, and wherein the weight ratio (CB/R) of the carbon black (CB) to the resin dispersant (R) is from 10/3 to 10/1. |
| Claim: |
8. The intermediate transfer medium according to claim 1, wherein the carbon black comprises volatile components in an amount of from 4.5 to 6.0% by weight. |
| Claim: |
9. The intermediate transfer medium according to claim 1, wherein the acidic carbon black is a carbon black selected from the group consisting of self-dispersible carbon blacks comprising a resin grafted on a surface thereof and self-dispersible capsuled carbon black in which a carbon black is capsuled with a resin. |
| Claim: |
10. The intermediate transfer medium according to claim 9, wherein each of the resin and the particulate resin is selected from the group consisting of acrylic acid-butyl acrylate-methyl methacrylate copolymers, styrene-maleic acid ester-maleic anhydride copolymers and polyvinyl pyrrolidone. |
| Claim: |
11. The intermediate transfer medium according to claim 1, wherein the carbon black has an average primary particle diameter of from 10 nm to 300 nm. |
| Claim: |
12. The intermediate transfer medium according to claim 1, wherein the binder resin comprises a resin selected from the group consisting of polyimide resins, modified polyimide resins, and polyamideimide resins. |
| Claim: |
13. The intermediate transfer medium according to claim 1, wherein the layer is an outermost layer, and wherein the layer has a surface resistivity of form 108 to 1012 Ω/□. |
| Claim: |
14. The intermediate transfer medium according to claim 1, wherein the intermediate transfer medium consists essentially of the layer. |
| Claim: |
15. The intermediate transfer medium according to claim 1, wherein the intermediate transfer medium comprises at least two layers, one of which is the layer. |
| Claim: |
16. The intermediate transfer medium according to claim 1, wherein the intermediate transfer medium is an endless form. |
| Claim: |
17. A film forming liquid comprising: a water soluble organic solvent; an acidic carbon black comprising volatile components of from 3.5 to 8.0% by weight; at least one of a water soluble resin having a weight average molecular weight of from 3,000 to 30,000, and a resin dispersant having a weight average molecular weight of from 3,000 to 300,000, which is selected from the group consisting of water-soluble resins, polyamide acids, polyimides, and block copolymers including a unit containing at least one of a polyamide acid and a polyimide; and a binder resin, wherein a weight ratio (CB/R) of the carbon black (CB) to the at least one (R) of the water soluble resin and the resin dispersant is from 3/1 to 10/1. |
| Claim: |
18. The film forming liquid according to claim 17, wherein the film forming liquid comprises a water soluble resin having a weight molecular weight of from 5,000 to 15,000. |
| Claim: |
19. The film forming liquid according to claim 17, wherein the film forming liquid comprises a water soluble resin selected from the group consisting of acrylic acid-butyl acrylate-methyl methacrylate copolymers, styrene-maleic acid ester-maleic anhydride copolymers, and polyvinyl pyrrolidone. |
| Claim: |
20. The film forming liquid according to claim 17, wherein the film forming liquid comprises a water soluble resin, and wherein the weight ratio (CB/R) of the carbon black (CB) to the water soluble resin (R) is from 10/3 to 10/1. |
| Claim: |
21. The film forming liquid according to claim 17, wherein the film forming liquid comprises a resin dispersant having a weight molecular weight of from 5,000 to 150,000. |
| Claim: |
22. The film forming liquid according to claim 17, wherein the film forming liquid comprises a resin dispersant comprising a repeat unit having a biphenyl skeleton in an amount not less than 40% by mole. |
| Claim: |
23. The film forming liquid according to claim 17, wherein the film forming liquid includes a resin dispersant, and wherein the weight ratio (CB/R) of the carbon black (CB) to the resin dispersant (R) is from 10/3 to 10/1. |
| Claim: |
24. The film forming liquid according to claim 17, wherein the carbon black comprises volatile components in an amount of from 4.5 to 6.0% by weight. |
| Claim: |
25. The film forming liquid according to claim 17, wherein the acidic carbon black is a carbon black selected from the group consisting of self-dispersible carbon blacks comprising a resin grafted on a surface thereof and self-dispersible capsuled carbon blacks in which a carbon black is capsuled with a resin. |
| Claim: |
26. The film forming liquid according to claim 25, wherein each of the resin and the particulate resin is selected from the group consisting of acrylic acid-butyl acrylate-methyl methacrylate copolymers, styrene-maleic acid ester-maleic anhydride copolymers and polyvinyl pyrrolidone. |
| Claim: |
27. The film forming liquid according to claim 17, wherein the carbon black has an average primary particle diameter of from 10 nm to 300 nm. |
| Claim: |
28. The film forming liquid according to claim 17, wherein the binder resin is a resin selected from the group consisting of polyimide resins, modified polyimide resins, and polyamideimide resins. |
| Claim: |
29. An image forming apparatus comprises: at least one image bearing member; at least one charger configured to charge the at least one image forming apparatus to form an electrostatic latent image on the image bearing member; at least one developing device configured to develop the electrostatic latent image to form a toner image; a transfer device configured to transfer the toner image onto a receiving material via an intermediate transfer medium; and a fixing device configured to fix the toner image on the receiving material, wherein the intermediate transfer medium is the intermediate transfer medium according to claim 1. |
| Current U.S. Class: |
428323/000 |
| رقم الانضمام: |
edspap.20050136245 |
| قاعدة البيانات: |
USPTO Patent Applications |