Elektrophotographischer Photorezeptor, Prozesskartusche und Bilderzeugungsvorrichtung

Details

Veröffentlichungs-Nr.

EP4741936

Anmeldetag

5. Mai 2025

Veröffentlichung

13. Mai 2026

Rechtsraum

EP

IPC

G03G5/05(OKUDA ATSUSHI et al.)(FUJI XEROX CO LTD et al.)

Abstract

An electrophotographic photoreceptor includes a conductive substrate, and a photosensitive layer disposed on the conductive substrate, in which an outermost surface layer contains a charge transport material, a polyarylate resin having at least one dicarboxylic acid unit selected from the group composed of a dicarboxylic acid unit (A2) represented by Formula (A2), a dicarboxylic acid unit (A3) represented by Formula (A3), a dicarboxylic acid unit (A4) represented by Formula (A4), and a dicarboxylic acid unit (A5) represented by Formula (A5) and a diol unit represented by Formula (B), and a polycarbonate resin, and a weight-average molecular weight MwA of the polyarylate resin and a weight-average molecular weight MwB of the polycarbonate resin satisfy -14 ≤ 100 × (MwA - MwB)/MwA ≤ 14, <img class="EMIRef" id="41f03b08-3c96-4836-9f2c-f44c61dd5bcc-ia01" /> <img class="EMIRef" id="41f03b08-3c96-4836-9f2c-f44c61dd5bcc-ia02" /> <img class="EMIRef" id="41f03b08-3c96-4836-9f2c-f44c61dd5bcc-ia03" /> <img class="EMIRef" id="41f03b08-3c96-4836-9f2c-f44c61dd5bcc-ia04" /> <img class="EMIRef" id="41f03b08-3c96-4836-9f2c-f44c61dd5bcc-ia05" /> in Formula (A2), n<201> and n<202> are each independently an integer of 0 or greater and 4 or less, and n<201> pieces of Ra<201>'s and n<202> pieces of Ra<202>'s are each independently an alkyl group having 1 or more and 10 or less carbon atoms, an aryl group having 6 or more and 12 or less carbon atoms, or an alkoxy group having 1 or more and 6 or less carbon atoms, in Formula (A3), n<301> and n<302> are each independently an integer of 0 or greater and 4 or less, and n<301> pieces of Ra<301>'s and n<302> pieces of Ra<302>'s are each independently an alkyl group having 1 or more and 10 or less carbon atoms, an aryl group having 6 or more and 12 or less carbon atoms, or an alkoxy group having 1 or more and 6 or less carbon atoms, in Formula (A4), n<401> is an integer of 0 or greater and 6 or less, and n<401> pieces of Ra<401>'s are each independently an alkyl group having 1 or more and 10 or less carbon atoms, an aryl group having 6 or more and 12 or less carbon atoms, or an alkoxy group having 1 or more and 6 or less carbon atoms, in Formula (A5), n<501>, n<502>, and n<503> are each independently an integer of 0 or greater and 4 or less, and n<501> pieces of Ra<501>'s, n<502> pieces of Ra<502>'s, and n<503> pieces of Ra<503>'s are each independently an alkyl group having 1 or more and 10 or less carbon atoms, an aryl group having 6 or more and 12 or less carbon atoms, or an alkoxy group having 1 or more and 6 or less carbon atoms, in Formula (B), Ar<B1> and Ar<B2> are each independently an aromatic ring which may have a substituent, L<B> is a single bond, an oxygen atom, a sulfur atom, or -C(Rb<1>)(Rb<2>)-, and n<B1> is 0, 1, or 2, where Rb<1> and Rb<2> are each independently a hydrogen atom, an alkyl group having 1 or more and 20 or less carbon atoms, an aryl group having 6 or more and 12 or less carbon atoms, or an aralkyl group having 7 or more and 20 or less carbon atoms, and Rb<1> and Rb<2> may be bonded to each other to form a cyclic alkyl group.

Anmelder

Firma

FUJIFILM Business Innovation Corp.

Land

🇯🇵 Japan