Patent number: 7427460
Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where Ar is an aryl group; X comprises a bond or a linking group; R1, R2, and R3 each comprise H, a carboxyl, an amino group, a halogen, an alkyl group, an acyl group, an alkoxy group, an alkylsulfanyl group, an alkenyl group, an alkynyl group, a heterocyclic group, an aromatic group, or a part of a ring group; R4 comprises H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; and R5, R6, R7, and R8 each comprise an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, a heterocyclic group, or a part of a ring group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.
Type:
Grant
Filed:
July 30, 2004
Date of Patent:
September 23, 2008
Assignee:
Samsung Electronics Co., Ltd.
Inventors:
Ruta Budreckiene, Gintaras Buika, Vygintas Jankauskas, Juozas V. Grazulevicius, Jonas Sidaravicius, Nusrallah Jubran, Zbigniew Tokarski
Patent number: 7160894
Abstract: A novel compound represented by the formula (1): [R1 represents hydrogen atom, chlorine atom, or hydroxyl group; X1 . . . X2 represents—CH(R2)—CH(R3)—, —CH(R2)—CH(R3)—CH(R4)—, etc.; R2 to R4represent hydrogen atom, or an alkyl group; A1, A11, A2, and A21 represent hydrogen atom, or an alkyl group; Y represents —CH(A3)—, —CH(A3)—C(A4)(A41)—, —CH(A3)—C(A4)(A41)—C(A5)(A51)—, or a single bond; A3, A4, A41, A5, and A51 represent hydrogen atom, or an alkyl group; Z represents hydroxyl group, or —N(A6)(A61); A6 represents hydrogen atom, or an alkyl group, A61 represents hydrogen atom, an alkyl group, an aralkyl group, etc.; and groups in each of one or more combinations selected from the group consisting of combinations of A6 and A3, A6 and A4, A6 and A1, A6 and A2, A2 and A3, A2 and A4, A6 and A5, A3 and A1, and A5 and A1 may bind to each other to form a 5- or 6-membered ring], or a salt thereof, which potently inhibits the phosphorylation of myosin regulatory light chain.
Type:
Grant
Filed:
June 3, 2004
Date of Patent:
January 9, 2007
Assignee:
Asahi Kasei Pharma Corporation
Inventors:
Rintaro Yamada, Minoru Seto