Bilderzeugungsgerät

Details

Veröffentlichungs-Nr.

EP4741935

Anmeldetag

2. Mai 2025

Veröffentlichung

13. Mai 2026

Rechtsraum

EP

IPC

G03G5/047, G03G5/05, G03G21/00(KANO FUYUKI et al.)(FUJI XEROX CO LTD et al.)

Abstract

An image forming apparatus includes an electrophotographic photoreceptor, and a charging device including a charging member that charges a surface of the electrophotographic photoreceptor and a cleaning member that is disposed in contact with the charging member, in which the electrophotographic photoreceptor has a conductive substrate and a photosensitive layer disposed on the conductive substrate, and an outermost surface layer of the electrophotographic photoreceptor contains a charge transport material and a polyarylate resin having a dicarboxylic acid unit represented by Formula (A) and a diol unit represented by Formula (B), the cleaning member has a core metal and a foamed elastic layer provided in a helical shape on an outer peripheral surface of the core metal, and a value of a ratio T/W of a thickness T of the foamed elastic layer to a width W of the foamed elastic layer is 0.6 or more and 1.2 or less, <img class="EMIRef" id="a412cc7e-cd38-43bc-91fa-24b29f92f450-ia01" /> <img class="EMIRef" id="a412cc7e-cd38-43bc-91fa-24b29f92f450-ia02" /> in Formula (A), Ar<A1> and Ar<A2> are each independently an aromatic ring which may have a substituent, L<A> is a single bond or a divalent linking group, and n<A1> is 0, 1, or 2, 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