Radiation imagery chemistry: process – composition – or product th – Holographic process – composition – or product
Reexamination Certificate
2006-06-13
2006-06-13
Angebranndt, Martin (Department: 1756)
Radiation imagery chemistry: process, composition, or product th
Holographic process, composition, or product
C430S002000, C430S270180, C430S058500, C430S058150, C430S077000, C430S056000, C430S076000, C359S003000
Reexamination Certificate
active
07060393
ABSTRACT:
There is provided an optical recording medium comprising a recording layer containing a charge-generating material capable of generating a first electric charge and a second electric charge by beam irradiation, the second electric charge having a different polarity from that of the first electric charge, a charge-transport material enabling at least the first electric charge to be transported to isolate the first electric charge and the second electric charge, and a trapping material retaining the first electric charge. The optical characteristics of the recording layer is changed in accordance with changes in spatial distribution of the first and second electric charges, and the trapping material is provided with a conjugated system and with at least one nitrogen-containing heterocyclic group, and bonded through an unsaturated carbon atom of the heterocyclic group to the conjugated system.
REFERENCES:
patent: 4332948 (1982-06-01), Sakai et al.
patent: 4399207 (1983-08-01), Sakai et al.
patent: 4973576 (1990-11-01), Sakamoto et al.
patent: 5064264 (1991-11-01), Ducharme
patent: 5744267 (1998-04-01), Meerholz et al.
patent: 5800950 (1998-09-01), Hirao et al.
patent: 5800956 (1998-09-01), Minemura et al.
patent: 6090332 (2000-07-01), Marder et al.
patent: 6280884 (2001-08-01), Bjorklund et al.
patent: 6545971 (2003-04-01), Tsukamoto et al.
patent: 6577591 (2003-06-01), Hirao et al.
patent: 2002/0041561 (2002-04-01), Tsukamoto et al.
patent: 2003/0104285 (2003-06-01), Hirao et al.
patent: 54-083435 (1979-07-01), None
patent: 60-130744 (1985-07-01), None
patent: 62-050765 (1987-03-01), None
patent: 11-086335 (1999-03-01), None
patent: 2000-019572 (2000-01-01), None
“Polymeric photorefractive materials”; W.E.Moerner and S.M.Silence, Chem Rev, v94(1994), pp. 127-155.
T. Tsukamoto, et al., “Charge Carrier Trapping in the Photorefractive Polymer”, Photorefractive Effects, Material and Devices, OSA Tops, vol. 62, pp. 391-395.
H.J. Bolink, et al., “Control of Charge Trapping in a Novel Photorefractive Composite Consisting of a Bifunctional Molecule Based on TPD”, Proc. SPIE, vol. 2850, 1996, pp. 69-76.
Eric Hendrickx, et al., “Effect of the Chromophore Donor Group and Ferrocene Doping on the Dynamic Range, Gain, and Phase Shift in Photorefractive Polymers”, Journal of Chemical Physics, vol. 113, No. 13, Oct. 1, 2000, pp. 5439-5447.
G.G. Malliaras, et al., “Charge Trapping Photorefractive Polymers”, Proc. SPIE, vol. 2526, 1995, pp. 94-101.
Henk J. Bolink, et al., Photorefractive Polymers with Low Intrinsic Trap Density, Proc. SPIE, vol. 3144, 1997, pp. 124-133.
U.S. Appl. No. 09/450,743, filed Nov. 30, 1999, Tsukamoto et al.
Hirao Akiko
Matsumoto Kazuki
Nishizawa Hideyuki
Tsukamoto Takayuki
Angebranndt Martin
Kabushiki Kaisha Toshiba
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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