Photoconductor, image forming apparatus, and process cartridge

Patent metadata

Field	Value
Publication number	US-10114302-B2
Application number	US-201715590047-A
Country	US
Kind code	B2
Filing date	May 9, 2017
Priority date	May 30, 2016
Publication date	Oct 30, 2018
Grant date	Oct 30, 2018

Abstract

A photoconductor is provided. The photoconductor includes a support, an undercoat layer overlying the support, and a photosensitive layer overlying the undercoat layer. The undercoat layer includes a binder resin and a zinc oxide particle. The photosensitive layer includes a compound represented by the following formula (1):

where each of R 1 and R 2 independently represents an alkyl group or an aromatic hydrocarbon group.

First claim

The invention claimed is:

1. A photoconductor comprising:
a support;
an undercoat layer overlying the support, the undercoat layer comprising a binder resin, a zinc oxide particle, and a salicylic acid derivative; and
a photosensitive layer overlying the undercoat layer, the photosensitive layer comprising a compound represented by the following formula (1):

where each of R 1 and R 2 independently represents an alkyl group or an aromatic hydrocarbon group.

2. The photoconductor of claim 1 , wherein the undercoat layer has a thickness of from 7 to 35 μm.

3. An image forming apparatus comprising:
the photoconductor of claim 1 ;
a charger configured to charge a surface of the photoconductor;
an irradiator configured to irradiate the charged surface of the photoconductor with light to form an electrostatic latent image thereon;
a developing device configured to develop the electrostatic latent image into a toner image; and
a transfer device configured to transfer the toner image onto a recording medium.

4. A process cartridge comprising:
the photoconductor of claim 1 ; and
at least one of a charger, an irradiator, a developing device, and a transfer device.
wherein:
the charger is configured to charge a surface of the photoconductor;
the irradiator is configured to irradiate the charged surface of the photoconductor with light to form an electrostatic latent image thereon;
the developing device is configured to develop the electrostatic latent image into a toner image; and
the transfer device is configured to transfer the toner image onto a recording medium.

5. The photoconductor according to claim 1 , wherein a content of the salicylic acid derivative to the zinc oxide particle in the undercoat layer is in a range of from 0.1% to 5% by mass.

6. The photoconductor according to claim 1 , wherein the zinc oxide particle has an average particle diameter within a range of from 20 to 200 nm.

7. The photoconductor according to claim 1 , wherein a volume occupancy of the zinc oxide particle in the undercoat layer is in a range of from 40% to 55%.

8. The photoconductor according to claim 1 , wherein a content of the binder resin in the undercoat layer is in a range of from 20 to 100 parts by mass based on 100parts by mass of the zinc oxide particle.

Assignees

• TAKAHASHI Ryohta
• Sugino Akihiro
• Kurimoto Eiji
• Kami Hidetoshi
• Shimoyama Keisuke
• Suzuki Tetsuro
• Asano Tomoharu
• Ishida Toshihiro
• Ricoh Co Ltd

Inventors

• TAKAHASHI Ryohta
• Sugino Akihiro
• Kurimoto Eiji
• Kami Hidetoshi
• Shimoyama Keisuke
• Suzuki Tetsuro
• Asano Tomoharu
• Ishida Toshihiro

Classifications

• G03G5/0521

  comprising one or more heterocyclic groups · CPC title

• G03G15/20 Primary

  for fixing, e.g. by using heat · CPC title

• G03G5/051 Primary

  Organic non-macromolecular compounds · CPC title

• G03G5/14708

  comprising organic material · CPC title

• G03G15/01

  for producing multicoloured copies · CPC title