Claims
- 1. A transfer conveying belt for conveying a transfer material into a transfer region for transferring a toner image on the transfer material, the transfer conveying belt having a polyimide resin film containing oxidized carbon black.
- 2. The transfer conveying belt of claim 1, wherein at least one type of the oxidized carbon black has a conductivity index of 15 or less.
- 3. The transfer conveying belt of claim 1, wherein the surface resistivity is in a range of 1010 to 1014 (Ω/□).
- 4. The transfer conveying belt of claim 1, wherein the difference in the common logarithmic values (log Ω/□) of the surface resistivities at 28° C., 85% RH and 10° C., 15% RH is within 1.0 order (log Ω/□).
- 5. The transfer conveying belt of claim 1, wherein dependence of an electric field of the surface resistivity is within 0.6 order (log Ω/□).
- 6. The transfer conveying belt of claim 1, wherein the intermediate transfer member has a seamless form.
- 7. The transfer conveying belt of claim 1, wherein the oxidized carbon black has an oxygen-containing functional group on the surface of the carbon black.
- 8. The transfer conveying belt of claim 7, wherein the oxygen-containing functional group is at least one type selected from the group consisting of carboxyl group, quinone group, lactone group, and hydroxyl group.
- 9. The transfer conveying belt of claim 1, wherein the content of the oxidized carbon black is 10 to 50 wt. % in the polyimide resin.
- 10. The transfer conveying belt of claim 1, wherein the content of the oxidized carbon black is 12 to 30 wt. % in the polyimide resin.
- 11. The transfer conveying belt of claim 1, wherein one of monomer components of the polyimide resin is tetracarboxylic dianhydride expressed by the following formula (1), where R represents a quadrivalent organic group selected from an aromatic group, aliphatic group, alicyclic group, and combination of aromatic group and aliphatic group, and said quadrivalent organic group may be substituted with at least one substituent.
- 12. The transfer conveying belt of claim 11, wherein the tetracarboxylic dianhydride expressed by formula (1) is 3,3′,4,4′-biphenyl tetracarboxylic dianhydride or a derivative thereof.
- 13. An image forming apparatus comprising a transfer conveying belt for conveying a transfer material into a transfer region for transferring a toner image on the transfer material, the transfer conveying belt having a polyimide resin film containing oxidized carbon black.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2000-141828 |
May 2000 |
JP |
|
Parent Case Info
This is a division of application Ser. No. 09/721,951 filed Nov. 27, 2000, now U.S. Pat. No. 6,646,040. The entire disclosure of the prior application(s) is hereby incorporated by reference herein in its entirety.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
6004669 |
Rokutan et al. |
Dec 1999 |
A |
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