Positively chargeable developer

Details Positively chargeable developer Positively chargeable developer

2006-02-16

2010-06-22

Dote, Janis L (Department: 1795)

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

C430S108600, C430S111400, C430S122510, C430S123410, C430S123420, C430S125500

Reexamination Certificate

active

07740998

ABSTRACT:
A positively chargeable developer is provided which is capable of providing stable image quality without causing any image defect even in long-term use. The developer includes at least positively chargeable toner particles each containing at least a binder resin and magnetic iron oxide, silica and an inorganic fine powder. A unconfined yield strength at a major consolidation stress of 5 kPa of the developer is in the range of 0.1 to 2.5 kPa, and a unconfined yield strength at a major consolidation stress of 20 kPa of the developer is in the range of 2.5 to 5.5 kPa.

REFERENCES:
patent: 2297691 (1942-10-01), Carlson
patent: 5641601 (1997-06-01), Mitani et al.
patent: 5705305 (1998-01-01), Ohta et al.
patent: 6670087 (2003-12-01), Fujikawa et al.
patent: 6686110 (2004-02-01), Kadota
patent: 7018762 (2006-03-01), Kadota
patent: 7150953 (2006-12-01), Yamazaki et al.
patent: 2005/0106485 (2005-05-01), Yamazaki et al.
patent: 2006/0088780 (2006-04-01), Kadota
patent: 2006/0275687 (2006-12-01), Kadota
patent: 2006/0283782 (2006-12-01), Kadota
patent: 42-023910 (1967-11-01), None
patent: 43-024748 (1968-10-01), None
patent: 01-219762 (1989-09-01), None
patent: 04-083258 (1992-03-01), None
patent: 04-083259 (1992-03-01), None
patent: 04-142560 (1992-05-01), None
patent: 04/217262 (1992-08-01), None
patent: 04-269763 (1992-09-01), None
patent: 04-350665 (1992-12-01), None
patent: 06-093136 (1994-11-01), None
patent: 06-093137 (1994-11-01), None
patent: 07-230182 (1995-08-01), None
patent: 08/137125 (1996-05-01), None
patent: 08-202081 (1996-08-01), None
patent: 08-286421 (1996-11-01), None
patent: 09/190007 (1997-07-01), None
patent: 09-244398 (1997-09-01), None
patent: 2001-034006 (2001-02-01), None
patent: 2001-034015 (2001-02-01), None
patent: 2001-083738 (2001-03-01), None
patent: 2002-207314 (2002-07-01), None
patent: 2002-365828 (2002-12-01), None
patent: 2003-280253 (2003-10-01), None
patent: 2003-280254 (2003-10-01), None
patent: 2004/191532 (2004-07-01), None
USPTO Trademark Electronic Search System (TESS) file for trademark Coulter Counter, Serial No. 72062272, printed on Sep. 16, 2009.
Japanese Patent Office machine-assisted translation of JP 2001-083738 A (pub. Mar. 2001).
Translation of International Preliminary Report on Patentability in PCT/JP2005/021636 issued by WIPO on May 22, 2007.

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