Imaging member exhibiting lateral charge migration resistance
The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrostatographic, including digital, apparatuses. More particularly, the embodiments pertain to an improved electrostatographic imaging member incorporating amino triphenymethane into the charge generating layer which results in a surprisingly lateral charge migration (LCM) resistant device.
1. An imaging member comprising:
a substrate;
an undercoat layer disposed on the substrate;
a charge generation layer disposed on the undercoat layer, wherein the charge generation layer comprises a titanyl phthalocyanine pigment and an amino triphenylmethane molecule; and
a charge transport layer disposed on the charge generation layer, wherein the imaging member exhibits lateral charge migration resistance.
2. The imaging member of claim 1 , wherein the amino triphenylmethane molecule is represented by
wherein R 1 is selected from the group consisting of H, CH 3 and Cl, R 2 and R 3 are alkyl or substituted alkyl groups containing from about 1 to about 6 carbon atoms.
3. The imaging member of claim 1 , wherein the amino triphenylmethane molecule is bis(4-diethylamino-2-methylphenyl)phenylmethane, represented by
4. The imaging member of claim 3 , wherein the bis(4-diethylamino-2-methylphenyl)phenylmethane molecule is present in the charge generation layer in an amount of no more than about 15.0 weight percent.
5. The imaging member of claim 3 , wherein the bis(4-diethylamino-2-methylphenyl)phenylmethane molecule is present in the charge generation layer in an amount of from about 1.0 to about 10.0 weight percent.
6. The imaging member of claim 1 , wherein the amino triphenylmethane molecule is selected from one of the following structures/formulas
7. The imaging member of claim 1 , wherein the amino triphenylmethane molecule is present in the charge generation layer in an amount of from about 0.1 to about 20.0 weight percent.
8. The imaging member of claim 1 , wherein the amino triphenylmethane molecule is present in the charge generation layer in an amount of from about 2.0 to about 10.0 weight percent.
9. The imaging member of claim 1 , wherein the titanyl phthalocyanine is Type V.
10. The imaging member of claim 1 , wherein the substrate is in a belt configuration.
11. The imaging member of claim 1 further including a ground plane comprising Ti and Zr.
12. The imaging member of claim 1 further including a blocking layer and an interfacial layer.
13. The imaging member of claim 1 , wherein the charge generation layer has a thickness of about 0.1 to about 2.0 micrometers.
14. The imaging member of claim 1 , wherein the charge transport layer has a thickness of about 10 to about 40 micrometers.
15. An imaging member comprising:
a substrate;
an undercoat layer disposed on the substrate;
a charge generation layer disposed on the undercoat layer, wherein the charge generation layer comprises a titanyl phthalocyanine pigment, a polycarbonate binder polymer and a bis(4-diethylamino-2-methylphenyl)phenylmethane molecule; and
a charge transport layer disposed on the charge generation layer, wherein the imaging member is in a belt configuration prepared through web extrusion coating and exhibits lateral charge migration resistance.
16. The imaging member of claim 15 , wherein the bis(4-diethylamino-2-methylphenyl)phenylmethane molecule is present in the charge generation layer in an amount of from about 0.5 to about 15.0 weight percent.
17. The imaging member of claim 15 , wherein the bis(4-diethylamino-2-methylphenyl)phenylmethane molecule is present in the charge generation layer in an amount of from about 1.0 to about 10.0 weight percent.
18. An imaging member comprising:
a substrate;
an undercoat layer disposed on the substrate;
a charge generation layer disposed on the undercoat layer, wherein the charge generation layer comprises a titanyl phthalocyanine pigment and a bis(4-diethylamino-2-methylphenyl)phenylmethane present in an amount of at least 0.5 weight percent; and
a charge transport layer disposed on the charge generation layer, wherein the imaging member exhibits lateral charge migration resistance with no adverse impact on electrical properties.
19. The imaging member of claim 18 , wherein the bis(4-diethylamino-2-methylphenyl)phenylmethane molecule is present in the charge generation layer in an amount of no more than about 15.0 weight percent.
20. The imaging member of claim 18 , wherein the bis(4-diethylamino-2-methylphenyl)phenylmethane molecule is present in the charge generation layer in an amount of from about 1.0 to about 10.0 weight percent.