Photoconductor for electrophotography and quinomethane compound

Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C399S159000, C549S472000, C549S497000

Reexamination Certificate

active

06933091

ABSTRACT:
A highly sensitive positively charged type electrophotographic photoconductor includes an organic compound that transports electrons efficiently, improving light emission efficiency. The photoconductor is used in an electrophotographic drum, an electrophotographic cartridge and an electrophotographic apparatus. The photosensitive layer includes at least one compound represented by the following general formula (I)wherein each of R1, R2, R3and R4, is independently selected from the group consisting of hydrogen atoms, alkyl groups having 1-6 carbon atoms that optionally have substituents and aryl groups that optionally have substituents, each of R5and R6is independently selected from the group consisting of hydrogen atoms, alkyl groups having 1-6 carbon atoms that optionally have substituents, aryl groups that optionally have substituents and heterocyclic groups that optionally have substituents, R7is selected from the group consisting of halogen atoms, alkyl groups having 1-6 carbon atoms that optionally have substituents, aryl groups that optionally have substituents and heterocyclic groups that optionally have substituents, m represents an integer of 0 to 2 and a plurality of R7s are the same or different, the substituents being selected from a group consisting of halogen atoms, alkyl groups having 1-6 carbon atoms, alkoxy groups having 1-6 carbon atoms, aryl groups, and heterocyclic groups.

REFERENCES:
patent: 5424158 (1995-06-01), Murakami et al.
patent: 01-206349 (1989-08-01), None
patent: 01-230054 (1989-09-01), None
patent: 03-290666 (1991-12-01), None
patent: 04-338760 (1992-11-01), None
patent: 04-360148 (1992-12-01), None
patent: 05-092936 (1993-04-01), None
patent: 05-150481 (1993-06-01), None
patent: 05-279582 (1993-10-01), None
patent: 06-059483 (1994-03-01), None
patent: 06-130688 (1994-05-01), None
patent: 07-179775 (1995-07-01), None
patent: 08-278643 (1996-10-01), None
patent: 09-151157 (1997-06-01), None
patent: 09-190002 (1997-07-01), None
patent: 09-190003 (1997-07-01), None
patent: 09-281728 (1997-10-01), None
patent: 09-281729 (1997-10-01), None
patent: 10-073937 (1998-03-01), None
patent: 10-239874 (1998-09-01), None
patent: 2000-075520 (2000-03-01), None
patent: 2000-143607 (2000-05-01), None
patent: 2000-199979 (2000-07-01), None
patent: 2001-142239 (2001-05-01), None
patent: 2001-222122 (2001-08-01), None
patent: 2002-037755 (2002-02-01), None
Yasufumi Mizuta et al., Synthesis and Xerographic Properties of Novel Naphthoquinone, Japan Hardcopy '97, pp. 21-24.
Yasuhiro Yamaguchi et al., Application of Unsymmetrical Diphenoquinone Derivatives to Xerography (1) Molecular Design of a Novel Class of Polymer-dispersable Electron-transport-active Compounds Jul. 2, 1991, pp. 266-273.
Yutaka Ohmori, “Recent Development of Highly Efficient Organic EL Materials,” Japan Journal of Applied Physics, Oyo Buturi, vol. 70, No. 12, pp. 1419-1425 (2001).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Photoconductor for electrophotography and quinomethane compound does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photoconductor for electrophotography and quinomethane compound, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photoconductor for electrophotography and quinomethane compound will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3494577

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.