Control of crazing, cracking or crystallization of a charge transport layer in a photoconductor
View Patent ↗Embodiments of a photoconductor for use in a printer or printer cartridge comprise an electrically conductive substrate, a charge generation layer disposed over the electrically conductive substrate, and a charge transport layer disposed over the charge generation layer, wherein the charge transport layer comprises charge transport molecules with octyl/decyl glycidyl ether (OGE) or dodecyl/tetradecyl glycidyl ether (DGE), or combinations thereof, added to improve resistance to crazing, cracking and crystallization in the change transport layer.
1. A photoconductor comprising:
an electrically conductive substrate;
a charge generation layer disposed over the electrically conductive substrate; and
a charge transport layer disposed over the charge generation layer, wherein the charge transport layer comprises charge transport molecules and dodecyl/tetradecyl glycidyl ether (DGE).
2. The photoconductor of claim 1 wherein the charge transport molecule is N,N′-bis (3-methylphenyl)-N,N′-diphenylbenzidine (TPD).
3. The photoconductor of claim 1 wherein the charge transport layer further comprises polycarbonate, polysiloxane, or combinations thereof.
4. The photoconductor of claim 1 wherein the charge transport layer further comprises organic solvents selected from the group consisting of tetrahydrofuran and 1,4-dioxane.
5. The photoconductor of claim 1 wherein the charge transport layer comprises about 30 to about 40% by wt. N,N′-bis(3-methylphenyl)-N,N′-diphenylbenzidine (TPD), and about 3 to about 5% by wt. DGE.
6. The photoconductor of claim 1 wherein the charge transport layer comprises a thickness of between about 20 to about 30 μm.
7. The photoconductor of claim 1 wherein the charge generation layer comprises titanyl phthalocyanine dispersed in a binder.
8. The photoconductor of claim 7 wherein the binder comprises polyvinylbutyral, poly(methyl-phenyl)siloxane, polyhydroxystyrene, or combinations thereof.
9. The photoconductor of claim 1 wherein the charge generation layer comprises organic solvents selected from the group consisting of 2-butanone and cyclohexanone.
10. The photoconductor of claim 1 wherein the charge generation layer comprises a thickness of about 0.1 to about 1 μm.
11. The photoconductor of claim 1 wherein the charge generation layer comprises a thickness of about 0.2 to about 0.3 μm.
12. The photoconductor of claim 1 wherein the electrically conductive substrate is an anodized and sealed aluminum core.
13. A printer cartridge comprising the photoconductor of claim 1 .
14. A printer comprising the photoconductor of claim 1 .
15. The photoconductor of claim 1 wherein the charge transport layer further comprises octyl/decyl glycidyl ether (OGE).