Elektrophotographischer Photorezeptor, Prozesskartusche und Bilderzeugungsvorrichtung

Details

Veröffentlichungs-Nr.

EP4722815

Anmeldetag

24. Februar 2025

Veröffentlichung

8. April 2026

Rechtsraum

EP

IPC

G03G5/05, G03G5/06(富士フイルムビジネスイノベーション株式会社)(WU JIN et al.)(CANON KK et al.)

Abstract

An electrophotographic photoreceptor includes a conductive substrate, a first undercoat layer that is provided on the conductive substrate, a second undercoat layer that is provided on the first undercoat layer, and a photosensitive layer that is provided on the second undercoat layer, in which the first undercoat layer contains at least one electron transport material selected from the group consisting of a compound represented by Formula (1), a compound represented Formula (2), and a compound represented by Formula (3), and a binder resin, and a content of silica particles in the first undercoat layer is 0% by mass or 5% by mass or less, and the second undercoat layer contains at least one electron transport material selected from the group consisting of the compound represented by Formula (1), the compound represented Formula (2), and the compound represented by Formula (3), silica particles, and a binder resin, and a content of the silica particles in the second undercoat layer is larger than the content of the silica particles in the first undercoat layer. <img class="EMIRef" id="a3a5872a-68e7-4ae1-a40e-8007dcaf9135-ia01" /> <img class="EMIRef" id="a3a5872a-68e7-4ae1-a40e-8007dcaf9135-ia02" /> <img class="EMIRef" id="a3a5872a-68e7-4ae1-a40e-8007dcaf9135-ia03" /> In Formula (1), R<11>, R<12>, R<13>, R<14>, R<15>, R<16>, R<17>, and R<18> each independently represent a hydrogen atom, an alkyl group, an alkoxy group, an aralkyl group, an aryl group, an aryloxy group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkoxycarbonylalkyl group, an aryloxycarbonylalkyl group, or a halogen atom, R<11> and R<12>, R<12> and R<13>, or R<13> and R<14> may be each independently linked to each other to form a ring, and R<15> and R<16>, R<16> and R<17>, or R<17> and R<18> may be each independently linked to each other to form a ring. In Formula (2), R<21>, R<22>, R<23>, R<24>, R<25>, R<26>, R<27>, and R<28> each independently represent a hydrogen atom, an alkyl group, an alkoxy group, an aralkyl group, an aryl group, an aryloxy group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkoxycarbonylalkyl group, an aryloxycarbonylalkyl group, or a halogen atom, R<21> and R<22>, R<22> and R<23>, or R<23> and R<24> may be each independently linked to each other to form a ring, and R<25> and R<26>, R<26> and R<27>, or R<27> and R<28> may be each independently linked to each other to form a ring. In Formula (3), R<31>, R<32>, R<33>, R<34>, R<35>, R<36>, R<37> , and R<38> each independently represent a hydrogen atom, an alkyl group, an alkoxy group, an aralkyl group, an aryl group, an alkoxycarbonyl group, or a halogen atom.

Anmelder

Firma

FUJIFILM Business Innovation Corp.

Land

🇯🇵 Japan