公开(公告)号：US20230202174A1

公开(公告)日：2023-06-29

申请号：US18086700

申请日：2022-12-22

申请人： SEIKO EPSON CORPORATION

发明人： Hajime ONISHI ,  Taisuke NAKASHIMA ,  Yasutaka MATSUMOTO ,  Yutaka YAMAZAKI

IPC分类号： B41J2/14 ,  G03G5/082 ,  G03G5/06 ,  G03G8/00 ,  G03G15/01

CPC分类号： B41J2/14201 ,  G03G5/08228 ,  G03G5/0662 ,  G03G8/00 ,  G03G15/0105 ,  G03G2215/2048

摘要： A flow passage forming member includes flow passage forming member main bodies 140 and 146 that are formed of a resin material and define at least a part of a flow passage, a metal protective film 200 that is provided on a surface of the flow passage forming member main body 140 and a surface of the flow passage forming member main body 146 defining at least the flow passage and is formed of a metal material, and a protective film 210 that is laminated on the metal protective film 200 and contains an oxide or a nitride of at least on element selected from the group consisting of tantalum (Ta), titanium (Ti), zirconium (Zr), niobium (bib), vanadium (V), hafnium (Hf), silicon (Si), aluminum (Al), tungsten (W), and yttrium (Y).

公开(公告)号：US10656542B2

公开(公告)日：2020-05-19

申请号：US16377027

申请日：2019-04-05

申请人： CANON KABUSHIKI KAISHA

发明人： Masashi Nishi ,  Kunihiko Sekido ,  Yuka Ishiduka ,  Akihiro Maruyama

IPC分类号： G03G5/00 ,  G03G5/043 ,  G03G5/082 ,  G03G5/07 ,  G03G5/14

摘要： An electrophotographic photosensitive member includes an undercoat layer, a charge generation layer, and a charge transport layer in this order. The undercoat layer contains a cured product of a composition containing an electron transport material, a particle having an average primary particle size of 10 nm or more, and a silicone oil. A content of the particle in the undercoat layer is 3% by mass or more and 20% by mass or less. A content of the silicone oil in the undercoat layer is 0.01% by mass or more and 10% by mass or less relative to the content of the particle.

公开(公告)号：US10459362B2

公开(公告)日：2019-10-29

申请号：US16199512

申请日：2018-11-26

申请人： KYOCERA Document Solutions Inc.

发明人： Ai Takagami ,  Satoshi Sunayama

IPC分类号： G03G15/20 ,  G03G15/02 ,  G03G15/00 ,  G03G5/082 ,  G03G21/00 ,  G03G15/06

摘要： An image forming apparatus includes a photoconductor, a charging member, a voltage applier, a storage unit, a current detector, a characteristic deriver and a voltage setter. The storage unit stores in advance relationship information representing a relationship between an electrical characteristic of discharge products adhering to the surface and a proper inter-peak voltage value capable of properly charging the surface. The current detector detects a current value of a current flowing from the charging member to the photoconductor. The characteristic deriver derives the electrical characteristic of the discharge products adhering to the surface on the basis of an oscillating voltage applied to the charging member by the voltage applier and the current value. The voltage setter sets the proper inter-peak voltage value corresponding to the electrical characteristic derived by the characteristic deriver in the relationship information as the inter-peak voltage value of the alternating-current voltage.

公开(公告)号：US10416580B2

公开(公告)日：2019-09-17

申请号：US15545939

申请日：2015-04-01

申请人： HP INDIGO B.V.

发明人： Kobi Shkuri ,  Sasi Moalem ,  Reut Diamant ,  Yossi Cohen ,  Shahar Tal

IPC分类号： G03G15/10 ,  G03G5/082 ,  G03G15/08 ,  G03G21/00 ,  G03G9/08

摘要： In an example of a method for reducing contamination, a purified imaging oil is formed by filtering an imaging oil through an imaging oil filter, and then filtering the imaging oil through a polar absorbent filter. A surface of an amorphous silicon photoconductor of a liquid electrophotographic printing apparatus is maintained by periodically applying the purified imaging oil to the amorphous silicon photoconductor.

公开(公告)号：US20190179248A1

公开(公告)日：2019-06-13

申请号：US16210822

申请日：2018-12-05

申请人： Kyocera Corporation

发明人： Haruki Nakatsugawa

IPC分类号： G03G15/00 ,  G03G5/082 ,  G03G5/043

摘要： A cylindrical base body of the disclosure includes an outer peripheral surface and an end surface which is connected to the outer peripheral surface. The outer peripheral surface includes a first inclined surface which is inclined inwardly toward the end surface, the end surface includes a second inclined surface which is inclined inwardly toward the outer peripheral surface and is connected to the first inclined surface, and a connecting portion of the first inclined surface and the second inclined surface has a radiused surface.

公开(公告)号：US20180217513A1

公开(公告)日：2018-08-02

申请号：US15747137

申请日：2016-06-30

申请人： KYOCERA CORPORATION

发明人： Haruki NAKATSUGAWA

IPC分类号： G03G5/082 ,  G03G5/10 ,  G03G5/147

CPC分类号： G03G5/08221 ,  G03G5/08235 ,  G03G5/08278 ,  G03G5/08285 ,  G03G5/10 ,  G03G5/104 ,  G03G5/144 ,  G03G5/147 ,  G03G5/14704

摘要： There are provided a method of manufacturing an electrophotographic photoreceptor which achieves excellent enduring characteristics and reduction in occurrence of image defects, a method of manufacturing an image forming apparatus, and an electrophotographic photoreceptor manufacturing apparatus. A method of manufacturing an electrophotographic photoreceptor includes a step of roughening an outer surface of a cylindrical base body so that a surface roughness of the outer surface of the cylindrical base body satisfies Str≥0.70, in which Str denotes texture aspect ratio; a step of forming a charge injection blocking layer on the outer surface of the cylindrical base body; a step of forming a photoconductive layer on the charge injection blocking layer; and a step of forming a surface layer on the photoconductive layer.

公开(公告)号：US20180188664A1

公开(公告)日：2018-07-05

申请号：US15740600

申请日：2016-06-30

申请人： KYOCERA CORPORATION

发明人： Haruki NAKATSUGAWA

IPC分类号： G03G5/147 ,  G03G5/082 ,  G03G5/14

CPC分类号： G03G5/14704 ,  G03G5/08278 ,  G03G5/08285 ,  G03G5/142 ,  G03G5/144 ,  G03G2215/00957

摘要： There are provided an electrophotographic photoreceptor which achieves excellent enduring characteristics and reduction in occurrence of image defects, and an image forming apparatus and an electrophotographic photoreceptor manufacturing apparatus. An electrophotographic photoreceptor includes a cylindrical base body; a charge injection blocking layer disposed on the cylindrical base body; a photoconductive layer disposed on the charge injection blocking layer; and a surface layer disposed on the photoconductive layer, the surface layer having a surface roughness defined as: texture aspect ratio Str>0.67.

公开(公告)号：US20180157183A1

公开(公告)日：2018-06-07

申请号：US15827830

申请日：2017-11-30

申请人： KYOCERA Document Solutions Inc.

发明人： Hideki OKADA

IPC分类号： G03G5/082 ,  G03G5/047 ,  G03G5/05 ,  C07C211/58 ,  C07C217/84 ,  G03G5/043

CPC分类号： G03G5/065 ,  C07C211/58 ,  C07C217/84 ,  G03G5/043 ,  G03G5/047 ,  G03G5/0564 ,  G03G5/0567 ,  G03G5/0592 ,  G03G5/0614 ,  G03G5/0618 ,  G03G5/0633 ,  G03G5/0638

摘要： An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer containing a charge generating material, a hole transport material, a quinone derivative, and a binder resin. The quinone derivative is represented by general formula (1) or (2), where R1, R2, R3, R4, and R5 each represent, independently of one another, a hydrogen atom, an alkyl group having a carbon number of at least 1 and no greater than 12, an aryl group that has a carbon number of at least 6 and no greater than 14 and that may have an alkyl group having a carbon number of at least 1 and no greater than 6, an aralkyl group having a carbon number of at least 7 and no greater than 12, or a cycloalkyl group having a carbon number of at least 3 and no greater than 10. Z represents an oxygen atom or a sulfur atom.

公开(公告)号：US09964871B2

公开(公告)日：2018-05-08

申请号：US15359862

申请日：2016-11-23

申请人： Konica Minolta, Inc.

发明人： Tomoko Sakimura ,  Toyoko Shibata ,  Masanori Yumita

IPC分类号： G03G5/00 ,  G03G5/147 ,  G03G5/047 ,  G03G5/06 ,  G03G5/082 ,  G03G5/14

CPC分类号： G03G5/1476 ,  G03G5/047 ,  G03G5/0696 ,  G03G5/082 ,  G03G5/142 ,  G03G5/14704 ,  G03G5/14726 ,  G03G5/14786 ,  G03G5/14791

摘要： An electrophotographic photoreceptor includes: a conductive support; a photosensitive layer disposed on the conductive support; and a protective layer disposed on the photosensitive layer, wherein the protective layer is formed of a polymerized and cured product of a radically polymerizable composition containing a radically polymerizable monomer, a perfluoropolyether compound having a radically polymerizable group, and metal oxide fine particles having a radically polymerizable group.

公开(公告)号：US20180017882A1

公开(公告)日：2018-01-18

申请号：US15545939

申请日：2015-04-01

申请人： HP INDIGO B.V.

发明人： Kobi Shkuri ,  Sasi Moalem ,  Reut Diamant ,  Yossi Cohen ,  Shahar Tal

IPC分类号： G03G5/082 ,  G03G15/08 ,  G03G9/08 ,  G03G21/00 ,  G03G15/10

CPC分类号： G03G5/08214 ,  G03G9/0812 ,  G03G15/0887 ,  G03G15/0894 ,  G03G15/10 ,  G03G15/104 ,  G03G21/0088 ,  G03G21/0094 ,  G03G2215/018

摘要： In an example of a method for reducing contamination, a purified imaging oil is formed by filtering an imaging oil through an imaging oil filter, and then filtering the imaging oil through a polar absorbent filter. A surface of an amorphous silicon photoconductor of a liquid electrophotographic printing apparatus is maintained by periodically applying the purified imaging oil to the amorphous silicon photoconductor.