Photoconductor with light fatigue additives
View Patent ↗A photoconductor having a charge generation layer and a charge transport layer, the charge transport layer having hydrazone or aryl amine charge transport molecules and also having as room light protective additives acetosol yellow 5GLS and tetraphenylcyclopentadienone or 9-fluorenone. Preferably the amount of the acetosol yellow is 2 to 4 percent by weight of the weight of the charge transfer layer and the ratio of weight between the acetosol yellow and the dienone or fluorenone is in the range of 1:1 to 1:3.
1. A photoconductor comprising a charge generation layer and a charge transport layer, at least one of said layers comprising a material selected from the group consisting of tetraphenylcyclopentadienone and 9-fluorenone and also comprising 1 percent to 5 percent by weight of C.I. Solvent Yellow 138 based on the total weight of said at least one layer.
2. The photoconductor as in claim 1 in which said at least one layer comprises tetraphenyicyclopentadienone.
3. The photoconductor as in claim 1 in which said at least one layer comprises 9-fluorenone.
4. A photoconductor comprising a charge generation layer and a charge transport layer, said charge transport layer comprising a material selected from the group consisting of tetraphenylcyclopentadienone and 9-fluorenone and also comprising 1 percent to 5 percent by weight of C.I. Solvent Yellow 138 based on the weight of said charge transport layer.
5. The photoconductor as in claim 4 in which said charge transport layer comprises tetraphenylcyclopentadienone.
6. The photoconductor as in claim 4 in which said charge transport layer comprises 9-fluorenone.
7. The photoconductor as in claim 5 in which said charge transport layer comprises a material selected from the group consisting of hydrazones and arylamines as charge transport materials.
8. The photoconductor as in claim 6 in which said charge transport layer comprises a material selected from the group consisting of hydrazones and arylamines as charge transport materials.
9. The photoconductor as in claim 7 in which the ratio by weight of said C.I. Solvent Yellow 138 to said tetraphenylcyclopentadienone is in the range of 1:1 to 1:3.
10. The photoconductor as in claim 8 in which the ratio by weight of said C.I. Solvent Yellow 138 to said 9-fluorenone is in the range of 1:1 to 1:3.
11. The photoconductor as in claim 4 in which said C.I. Solvent Yellow 138 is in amount of 2 percent to 4 percent by weight of the weight of said charge transport layer.
12. The photoconductor as in claim 5 in which said C.I. Solvent Yellow 138 is in amount of 2 percent to 4 percent by weight of the weight of said charge transport layer.
13. The photoconductor as in claim 6 in which said C.I. Solvent Yellow 138 is in amount of 2 percent to 4 percent by weight of the weight of said charge transport layer.
14. The photoconductor as in claim 7 in which said C.I. Solvent Yellow 138 is in amount of 2 percent to 4 percent by weight of the weight of said charge transport layer.
15. The photoconductor as in claim 8 in which said C.I. Solvent Yellow 138 is in amount of 2 percent to 4 percent by weight of the weight of said charge transport layer.
16. The photoconductor as in claim 9 in which said C.I. Solvent Yellow 138 is in amount of 2 percent to 4 percent by weight of the weight of said charge transport layer.
17. The photoconductor as in claim 10 in which said C.I. Solvent Yellow 138 is in amount of 2 percent to 4 percent by weight of the weight of said charge transport layer.