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1.发明公开公开(公告)号：US20240201609A1
公开(公告)日：2024-06-20
申请号：US18505369
申请日：2023-11-09
IPC分类号： G03G5/147 , C08G63/193 , G03G21/18
CPC分类号： G03G5/14752 , C08G63/193 , G03G5/14756 , G03G21/1814
摘要： Provided is an electrophotographic photosensitive member in which streaky image damage can be suppressed throughout long-term use in a low-temperature and low-humidity environment. An electrophotographic photosensitive member having a surface layer comprising a polyarylate and a polycarbonate, wherein the polyarylate has at least one structural unit selected from the group consisting of a structural unit represented by the following formula (1-1), a structural unit represented by the following formula (1-2) and a structural unit represented by the following formula (1-3), and the polycarbonate has a structural unit represented by the following formula (2-1).
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公开(公告)号：US11982974B2
公开(公告)日：2024-05-14
申请号：US17417421
申请日：2019-07-18
发明人： Boris Kaziev , Inna Tzomik , Faina Kogan
IPC分类号： G03G8/00 , C09D11/101 , C09D11/107 , G03G5/14 , G03G5/147 , G03G9/13
CPC分类号： G03G8/00 , C09D11/101 , C09D11/107 , G03G5/14 , G03G5/147 , G03G9/13
摘要： A method of forming a flexible printed material is described. The method comprises applying a layer of primer onto a flexible substrate; electrostatically printing onto the layer of primer a liquid electrostatic ink composition; applying a curable overprint varnish composition onto the printed electrostatic ink composition and curing the overprint varnish composition using electron beam irradiation. The curable overprint varnish composition comprises an ethylenically unsaturated monomer, an ethylenically unsaturated oligomer, or mixtures thereof, and less than 10 wt. % of a cross-linking additive based on the total weight of the curable overprint varnish composition. A flexible package comprising the flexible printed material is also described.
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公开(公告)号：US20240118638A1
公开(公告)日：2024-04-11
申请号：US18179718
申请日：2023-03-07
发明人： Michinori FUKUMA
CPC分类号： G03G5/14704 , G03G5/06144 , G03G15/75 , G03G21/1814
摘要： An electrophotographic photoreceptor includes a conductive substrate, an organic photosensitive layer, and an inorganic protection layer arranged in this order, the inorganic protection layer containing a metal oxide that contains oxygen atoms, gallium atoms, and aluminum atoms.
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4.发明公开公开(公告)号：US20240118634A1
公开(公告)日：2024-04-11
申请号：US18524566
申请日：2023-11-30
发明人： SHUNTARO WATANABE , TOMOHITO ISHIDA , NOBUHIRO NAKAMURA , HIROYUKI WATANABE , TATSUYA YAMAAI , MASATADA HIROTA
CPC分类号： G03G5/047 , G03G5/14747 , G03G21/1839 , G03G2221/183
摘要： The electrophotographic photosensitive member includes a support and a photosensitive layer on the support, in which a surface layer of the electrophotographic photosensitive member contains a particle, the surface layer has a particle partially exposed from the surface layer among the particle contained in the surface layer, the particle has a volume average particle diameter of 50.0 nm or more and 350.0 nm or less; in a cross-section of the surface layer, the number of the particle partially exposed from the surface layer is 80% by number or more based on a total number of the particle contained in the surface layer; and a total volume of an exposed portion of the particle partially exposed from the surface layer is 30% by volume or more and 80% by volume or less based on an entire volume of the particle contained in the surface layer.
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公开(公告)号：US20230288826A1
公开(公告)日：2023-09-14
申请号：US18178731
申请日：2023-03-06
发明人： CHIHARU NAKAZONO , KANAME WATARIGUCHI , HIDEHARU SHIMOZAWA , TSUTOMU NISHIDA , ATSUSHI OKUDA , TAIJI KATSURA , YUICHI KIKUCHI
CPC分类号： G03G5/14734 , G03G9/09708 , G03G21/1814
摘要： Provided is a process cartridge removably mountable onto a main body of an electrophotographic apparatus, the process cartridge comprising an electrophotographic photosensitive member, a toner, and a developing member configured to supply the toner to the electrophotographic photosensitive member, wherein, in filter fitting analysis in STEM-EDS analysis, a hydrotalcite particle comprises fluorine, and wherein, when a number-average primary particle diameter of a particle A is represented by “m” [nm], a content ratio of the particle A with respect to the surface layer is represented by “p” [vol %], and a number-average primary particle diameter of the hydrotalcite particle is represented by “h” [nm], the “m”, the “p”, and the “h” satisfy the following expressions, respectively:
5≤m≤300 Expression (1);
5≤p≤40 Expression (2); and
60≤h≤1,000 Expression (3).-
公开(公告)号：US11740572B2
公开(公告)日：2023-08-29
申请号：US17659244
申请日：2022-04-14
发明人： Naoto Kameyama
CPC分类号： G03G15/162 , G03G5/10 , G03G5/14726
摘要： Provided is an electrophotographic belt including at least: a base layer; and a surface layer containing the following A, B, and C:
A: a compound 1 having structures represented by formula (I) and formula (II):
in the formula (I), R1 represents a linking group, and R2 represents a hydrogen atom or a methyl group;
in the formula (II), R3 represents a hydrogen atom, a methyl group, or a methyl ester group, R4 represents a linking group, R5 represents a methyl group or a tert-butyl group, and “m” represents an integer of from 25 to 100;
B: perfluoropolyether;
C: a binder resin.-
公开(公告)号：US11619888B2
公开(公告)日：2023-04-04
申请号：US17681580
申请日：2022-02-25
发明人： Yuka Ishiduka , Tsutomu Nishida , Tatsuya Ohsawa
摘要： An electrophotographic image forming apparatus in which streak-like banding to be formed in an electrophotographic photosensitive member is suppressed. The electrophotographic image forming apparatus includes an electrophotographic photosensitive member, which has a protective layer, and a developer carrying member for supplying a developer. The protective layer contains a cured product containing an aromatic ring and an ester group, by attenuated total reflection Fourier transform infrared spectroscopy, when a peak area based on C═C stretching vibration of the aromatic ring is represented by S1, and a peak area based on C═O stretching vibration of the ester group is represented by S2, an area ratio S1/S2 is 0.10 to 0.27, and a rotation speed ratio D1/D2 of a rotation speed D1 of the developer carrying member to a rotation speed D2 of the electrophotographic photosensitive member is 0.80 to 1.20.
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公开(公告)号：US20230058033A1
公开(公告)日：2023-02-23
申请号：US17871560
申请日：2022-07-22
发明人： MATTHEW RUSSELL SMITHER , WEIMEI LUO , LAURA LEE KIERSTEIN , MATTHEW DAVID HEID , MARK THOMAS BELLINO
IPC分类号： G03G5/147
摘要： An improved overcoat layer for an organic photoconductor drum of an electrophotographic image forming device is provided. The overcoat layer is prepared from a curable composition including a crosslinkable siloxane, an acrylic polymer with pigment affinic groups, nano metal oxide particles sized less than 400 nm in combination with a urethane acrylate resin having at least 6 functional groups. The outermost layer of an organic photoconductors is coated with the overcoat formulation of the present invention then cured. The resulting cured overcoated organic photoconductor has improved wear resistance and importantly does not negatively altering the electrophotographic properties of the organic photoconductor.
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公开(公告)号：US20230055807A1
公开(公告)日：2023-02-23
申请号：US17871657
申请日：2022-07-22
发明人： MATTHEW RUSSELL SMITHER , WEIMEI LUO , LAURA LEE KIERSTEIN , MATTHEW DAVID HEID , MARK THOMAS BELLINO
IPC分类号： G03G5/147
摘要： An improved overcoat layer for an organic photoconductor drum of an electrophotographic image forming device is provided. The overcoat layer is prepared from a curable composition including a crosslinkable siloxane, an acrylic polymer with pigment affinic groups, nano metal oxide particles sized less than 400 nm in combination with a urethane acrylate resin having at least 6 functional groups. The outermost layer of an organic photoconductors is coated with the overcoat formulation of the present invention then cured. The resulting cured overcoated organic photoconductor has improved wear resistance and importantly does not negatively altering the electrophotographic properties of the organic photoconductor.
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公开(公告)号：US20230051626A1
公开(公告)日：2023-02-16
申请号：US17871637
申请日：2022-07-22
发明人： MATTHEW RUSSELL SMITHER , WEIMEI LUO , LAURA LEE KIERSTEIN , MATTHEW DAVID HEID , MARK THOMAS BELLINO
IPC分类号： G03G5/147
摘要： An improved overcoat layer for an organic photoconductor drum of an electrophotographic image forming device is provided. The overcoat layer is prepared from a curable composition including a crosslinkable siloxane, an acrylic polymer with pigment affinic groups, nano metal oxide particles sized less than 400 nm in combination with a urethane acrylate resin having at least 6 functional groups. The outermost layer of an organic photoconductors is coated with the overcoat formulation of the present invention then cured. The resulting cured overcoated organic photoconductor has improved wear resistance and importantly does not negatively altering the electrophotographic properties of the organic photoconductor.
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