Electrostatic imaging member and methods for using the same

Patent metadata

Field	Value
Publication number	US-9400441-B2
Application number	US-201514609351-A
Country	US
Kind code	B2
Filing date	Jan 29, 2015
Priority date	Jul 13, 2011
Publication date	Jul 26, 2016
Grant date	Jul 26, 2016

Abstract

Embodiments pertain to a method of creating an electrostatic latent image through use of an electrostatic latent image generating device comprising a single exposing device for selectively exposing a surface of the electrostatic imaging member to light, and a single electrostatic charging device for charging the surface of the electrostatic imaging member, wherein the exposing device is located before the electrostatic charging device such that the exposing the surface of the electrostatic imaging member to light precedes the charging the surface of the electrostatic imaging member and wherein charge is not accepted by the exposed surface of the electrostatic imaging member and the charge is accepted by the unexposed surface of the electrostatic imaging member.

First claim

What is claimed is:

1. A method for creating an electrostatic latent image, comprising:
providing an electrostatic imaging device having a charge retentive-surface for receiving an electrostatic latent image thereon, wherein the electrostatic imaging device comprises
an electrostatic imaging member comprising
a substrate,
a charge generation layer disposed on the substrate, and
a charge transport layer comprising a charge transport molecule disposed on the charge generation layer, wherein electrostatic imaging member is light-sensitive, and further wherein the charge transport molecule is selected from the group consisting of

wherein X is an alkyl, alkoxy, aryl, a halogen, and mixtures thereof,

wherein X is an alkyl, alkoxy, aryl, a halogen, and mixtures thereof,

wherein X and Y are independently alkyl, alkoxy, aryl, a halogen, or mixtures thereof, and
wherein at least one of Y is present,

wherein X, Y and Z are independently alkyl, alkoxy, aryl, a halogen, or mixtures thereof, and wherein at least one of Y and Z are present, and mixtures thereof;
a single exposing device for selectively exposing a surface of the electrostatic imaging member to light; and
a single electrostatic charging device for charging the surface of the electrostatic imaging member, wherein the exposing device is located before the electrostatic charging device such that the exposing the surface of the electrostatic imaging member to light precedes the charging the surface of the electrostatic imaging member;
selectively exposing a surface of the electrostatic imaging member to light; and
charging the surface of the electrostatic imaging member, wherein charge is not accepted by the exposed surface of the electrostatic imaging member and the charge is accepted by the unexposed surface of the electrostatic imaging member.

2. The method of claim 1 , wherein the charge transport molecule is present in the charge transport layer in an amount of from about 1% to about 60% by weight of the total weight of the charge transport layer.

3. The method of claim 2 , wherein the charge transport molecule is present in the charge transport layer in an amount of from about 30% to about 50% by weight of the total weight of the charge transport layer.

4. The method of claim 1 , wherein the light in the exposing step is provided from an exposing device selected from the group consisting of a raster output scanner (ROS) and a light-emitting diode (LED) array.

5. The method of claim 1 , wherein the charging step is provided by an electrostatic charger.

6. The method of claim 5 , wherein the electrostatic charger is selected from the group consisting of a corotron, scorotron and biased charge roller.

7. The method of claim 1 , wherein the charge transport layer further comprises a polymer binder.

8. The method of claim 1 , wherein the charge transport layer has a thickness of from about 2 microns to about 40 microns.

9. The method of claim 8 , wherein the charge transport layer has a thickness of from about 20 microns to about 30 microns.

10. A method for creating an electrostatic latent image, comprising:
providing an electrostatic imaging device having a charge retentive-surface for receiving an electrostatic latent image thereon, wherein the electrostatic imaging device comprises
an electrostatic imaging member comprising
a substrate,
a charge generation layer disposed on the substrate, and
a charge transport layer comprising a charge transport molecule disposed on the charge generation layer, wherein electrostatic imaging member is light-sensitive, and further wherein the charge transport molecule comprises N,N,N′,N′-tetra(4-methylphenyl)-(1, 1′-biphenyl)-4,4′-diamine;

a single exposing device for selectively exposing a surface of the electrostatic imaging member to light; and
a single electrostatic charging device for charging the surface of the electrostatic imaging member, wherein the exposing device is located before the electrostatic charging device such that the exposing the surface of the electrostatic imaging member to light precedes the charging the surface of the electrostatic imaging member;

selectively exposing a surface of the electrostatic imaging member to light; and
charging the surface of the electrostatic imaging member, wherein charge is not accepted by the exposed surface of the electrostatic imaging member and the charge is accepted by the unexposed surface of the electrostatic imaging member.

11. The method of claim 10 , wherein the charge transport molecule is present in the charge transport layer in an amount of from about 1% to about 60% by weight of the total weight of the charge transport layer.

12. The method of claim 10 , wherein the light in the exposing step is provided from an exposing device selected from the group consisting of a raster output scanner (ROS) and a light-emitting diode (LED) array.

13. The method of claim 10 , wherein the charging step is provided by an electrostatic charger.

14. The method of claim 10 , wherein the charge transport further comprises a polymer binder.

15. The method of claim 10 , wherein the charge transport layer has a thickness of from about 2 microns to about 40 microns.

16. A method for creating an electrostatic latent image, comprising:
providing an electrostatic imaging device having a charge retentive-surface for receiving an electrostatic latent image thereon, wherein the electrostatic imaging device comprises
an electrostatic imaging member comprising
a substrate,
a charge generation layer disposed on the substrate, and
a charge transport layer comprising a charge transport molecule disposed on the charge generation layer, wherein electrostatic imaging member is light-sensitive, and further wherein the charge transport molecule is selected from the group consisting of

wherein X is an alkyl, alkoxy, aryl, a halogen, and mixtures thereof,

wherein X is an alkyl, alkoxy, aryl, a halogen, and mixtures thereof,

wherein X and Y are independently alkyl, alkoxy, aryl, a halogen, or mixtures thereof, and
wherein at least one of Y is present,

wherein X, Y and Z are independently alkyl, alkoxy, aryl, a halogen, or mixtures thereof, and
wherein at least one of Y and Z are present, and mixtures thereof;
a single exposing device for selectively exposing a surface of the electrostatic imaging member to light; and
a single electrostatic charging device for charging the surface of the electrostatic imaging member, wherein the exposing device is located before the electrostatic charging device such that the exposing the surface of the electrostatic imaging member to light precedes the charging the surface of the electrostatic imaging member;
selectively exp

Assignees

• Xerox Corp

Inventors

• Mcguire Gregory
• Liu Yu
• Klenkler Richard A

Classifications

• G03G15/02 Primary

  for laying down a uniform charge, e.g. for sensitising; Corona discharge devices (G03G15/14 takes precedence) · CPC title

• G03G5/00 Primary

  Recording-members for original recording by exposure, e.g. to light, to heat or to electrons; Manufacture thereof; Selection of materials therefor · CPC title

• G03G5/047

  characterised by the charge-generation layers or charge transport layers {(G03G5/0433 and G03G5/0436 take precedence)} · CPC title

• G03G5/028

  Layers in which after being exposed to heat patterns electrically conductive patterns are formed in the layers, e.g. for thermoxerography · CPC title

• G03G5/026

  Layers in which during the irradiation a chemical reaction occurs whereby electrically conductive patterns are formed in the layers, e.g. for chemixerography · CPC title