PHOTOSENSITIVE BODY INCLUDING PROTECTIVE LAYER FORMED ON PHOTOSENSITIVE LAYER

• US 20180239248A1
• Filed: 04/20/2018
• Published: 08/23/2018
• Est. Priority Date: 10/21/2015
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: S-Printing Solution Co., Ltd. (Samsung Electronics Co. Ltd.)
• Inventors: HA, Young-soo, KANG, Sung-hoon, KWON, Yong-joon, KIM, Seung-ju, AN, So-hyeon, JUNG, Hun, HWANG, Il-sun
• Granted Patent: US 10,642,176 B2
• Time in Patent Office: Days
• CPC Class Codes: G03G 5/14704 comprising inorganic material
• CPC Class Codes: G03G 5/14708 comprising organic material
• CPC Class Codes: G03G 5/14734 Polymers comprising at least one carboxyl radical, e.g. polyacrylic acid, polycrotonic acid, polymaleic acid; Derivatives thereof, e.g. their esters, salts, anhydrides, nitriles, amides
• CPC Class Codes: G03G 5/14747 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: G03G 5/14769 Other polycondensates comprising nitrogen atoms with or without oxygen atoms in the main chain
• CPC Class Codes: G03G 5/14791 Macromolecular compounds characterised by their structure, e.g. block polymers, reticulated polymers, or by their chemical properties, e.g. by molecular weight or acidity
• CPC Class Codes: G03G 5/14795 Macromolecular compounds characterised by their physical properties

Abstract

A photosensitive body is provided. The photosensitive body includes a photosensitive layer, and a protective layer formed on the photosensitive layer, and the protective layer includes a urethane oligomer acrylate and a modified perfluoropolyether acrylate.

Claims

1. A photosensitive body for an image forming apparatus, comprising:

a photosensitive layer; and

a protective layer formed on the photosensitive layer,

wherein the protective layer includes a urethane oligomer acrylate and a modified perfluoropolyether acrylate.

2. The photosensitive body as claimed in claim 1, wherein the protective layer includes 5 to 40 parts by weight of the modified perfluoropolyether acrylate per 100 parts by weight of the urethane oligomer acrylate.

3. The photosensitive body as claimed in claim 1, wherein the urethane oligomer acrylate includes at least one acrylate selected from:

a difunctional urethane oligomer acrylate, and

a trifunctional or higher urethane oligomer acrylate.

4. The photosensitive body as claimed in claim 1, wherein the protective layer includes at least one compound selected from an aliphatic hydrocarbon acrylate having 16 or more carbon atoms and a mercapto compound.

5. The photosensitive body as claimed in claim 4, wherein

the protective layer includes the mercapto compound, and

the mercapto compound is selected from tetraethylene glycol bis(3-mercaptopropionate), trimethylolpropane tris(3-mercaptopropionate), tris-[(3-mercaptopropionyloxy)-ethyl]-isocyanurate, and pentaerythritol tetrakis(3-mercaptopropionate).

6. The photosensitive body as claimed in claim 1, wherein the urethane oligomer acrylate is an aliphatic urethane oligomer acrylate.

7. The photosensitive body as claimed in claim 1, wherein the protective layer includes at least one conductive material selected from copper, tin, aluminum, indium, silica, tin oxide, zinc oxide, titanium dioxide, aluminum oxide, zirconium oxide, indium oxide, antimony oxide, bismuth oxide, calcium oxide and carbon nanotubes.

8. An image forming apparatus comprising the photosensitive body as claimed in claim 1.

9. The photosensitive body as claimed in claim 4, wherein

the protective layer includes the aliphatic hydrocarbon acrylate having 16 or more carbon atoms, and

the aliphatic hydrocarbon acrylate having 16 or more carbon atoms is selected from stearyl acrylate and stearyl methacrylate.

10. The photosensitive body as claimed in claim 6, wherein the aliphatic urethane oligomer acrylate is an aliphatic acrylate having no hydroxyl group.

11. The photosensitive body as claimed in claim 1, wherein the modified perfluoropolyether acrylate is modified to have a perfluoroalkylene ether.

12. The photosensitive body as claimed in claim 1, wherein the urethane oligomer acrylate includes different urethane oligomer acrylates respectively having different numbers of functional groups from each other.