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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：US20230251585A1
公开(公告)日：2023-08-10
申请号：US17902401
申请日：2022-09-02
发明人： Masahiro IWASAKI , Yuki Oyamada , Keisuke Kusano , Wataru Yamada
CPC分类号： G03G5/056 , G03G5/142 , G03G5/06142 , G03G5/06144 , G03G21/1814
摘要： An electrophotographic photoreceptor includes a conductive substrate, an undercoat layer on the conductive substrate, and a photosensitive layer on the undercoat layer, in which the undercoat layer is formed of a cured product of a composition that contains a reactive group-containing triarylamine compound, a curing agent, and an electron transport material and that has a butyral resin content of 0 mass % or more and 5 mass % or less relative to all solid components in the undercoat layer.
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公开(公告)号：US20230152720A1
公开(公告)日：2023-05-18
申请号：US18055705
申请日：2022-11-15
发明人： Akira Okano , Takeaki Kumagai , Atsushi Hori , Megumi Uchino , Koji Sato
CPC分类号： G03G5/142 , G03G7/0053
摘要： An electrophotographic belt includes a base layer containing a binder resin and carbon black in the binder resin. The binder resin contains at least one resin selected from the group consisting of PEEK and PPS. A water content calculated by ((X2−X1)/X2)×100 is 0.6% where X1 is a mass of a specimen cut out of the base layer when in a nitrogen atmosphere a temperature of the specimen is increased from 30° C. to 100° C. at a rate of 20° C./min. and maintained at 100° C. for 30 min, and X2 is a mass of the specimen when in a nitrogen atmosphere the specimen is thereafter cooled from 100° C. to 30° C. at a rate of 20° C./min. and the specimen is left to stand in the air under an environment of a temperature of 23° C. and a relative humidity of 50% for 48 hours.
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公开(公告)号：US20230059041A1
公开(公告)日：2023-02-23
申请号：US17816024
申请日：2022-07-29
发明人： Kenichi Kaku , Akihiro Maruyama , Shuhei Iwasaki , Tatsuya Yamaai , Kaname Watariguchi , Michiyo Sekiya , Kohei Makisumi , Hideharu Shimozawa
摘要： Provided is an electrophotographic apparatus which uses a light emitting diode array as an exposure unit and exposes a photosensitive member to a quantity of light from the LED array whose average light quantity satisfies 0.8×Emin or more and 1.1×Emin or less on condition that a normalized radius of curvature R of a normalized graph derived from the E-V curve of the photosensitive member has a minimum value of 0.24 or less, and a light quantity at the minimum value of the normalized radius of curvature R is Emin [μJ/cm2]. This electrophotographic apparatus prevents both the occurrence of image unevenness due to light quantity variation among the elements of the LED array and the generation of ghost images due to a rest potential.
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5.发明申请公开(公告)号：US20210364937A1
公开(公告)日：2021-11-25
申请号：US17315851
申请日：2021-05-10
发明人： Jumpei Kuno , Taichi Sato
摘要： The present disclosure provides an electrophotographic photosensitive member that can obtain a satisfactory image free from the image defect such as the interference fringes as an electrophotographic photosensitive member, and can achieve high fineness in an output image. The electrophotographic photosensitive member includes a support, an electroconductive layer and a photosensitive layer, in this order, wherein the electroconductive layer comprises a binder resin, a metal oxide particle and a silica particle, a content of the metal oxide particle in the electroconductive layer is 20.0 to 60.0% by volume with respect to total volume of the electroconductive layer, the metal oxide particle has an average primary particle diameter of 50 to 500 nm, and the silica particle has an average primary particle diameter of 10 to 300 nm.
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公开(公告)号：US11143976B2
公开(公告)日：2021-10-12
申请号：US16733701
申请日：2020-01-03
发明人： Seizo Kitagawa , Kazuya Saito , Kazuki Nebashi , Hiroshi Emori , Masaru Takeuchi
摘要： A photoconductor for electrophotography includes a base member; an anodic oxide coating provided on the base member and having a film thickness of 2 to 10 μm; an interlayer provided on the anodic oxide coating and containing a vinyl chloride-vinyl acetate copolymer resin and having a film thickness of 0.02 to 0.3 μm; and a photosensitive layer including a charge transport layer formed on the interlayer and containing a charge transport material and a first resin binder, and a charge generation layer laminated on the charge transport layer and containing a charge generation material, a hole transport material, a first electron transport material that is a naphthalenetetracarboxylic diimide compound, a second electron transport material that is an azoquinone compound, a diphenoquinone compound, or a stilbenequinone compound and that has a mobility of 17×10−8 cm2/V·s or more, and a second resin binder.
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7.发明申请公开(公告)号：US20210200108A1
公开(公告)日：2021-07-01
申请号：US17129161
申请日：2020-12-21
发明人： Yota Ito , Akira Sakakibara
摘要： An electrophotographic photosensitive member includes: a support, an undercoat layer, and a photosensitive layer in this order, wherein the undercoat layer comprises a polyamide resin, and titanium oxide particles having been subjected to a surface treatment with an organic silicon compound, when an average primary particle size of the titanium oxide particles having been subjected to the surface treatment with the organic silicon compound is defined as “b” [μm], and a mass ratio of a Si element to TiO2 in the titanium oxide particles having been subjected to the surface treatment with the organic silicon compound is defined as “c” [mass %], “b” and “c” satisfy a relationship expressed by the following Expression (B), 0.025≤b×c≤0.050, and the photosensitive layer is a monolayer type photosensitive layer comprising a charge generating substance, a hole transporting substance, and an electron transporting substance.
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8.发明授权公开(公告)号：US10921723B2
公开(公告)日：2021-02-16
申请号：US16597152
申请日：2019-10-09
发明人： Kumiko Takizawa , Tsuyoshi Shimada , Takanori Ueno , Ikuyo Kuroiwa , Haruhiko Mitsuda , Kan Tanabe , Tatsuya Ikezue
摘要： Provided is an electrophotographic photosensitive member that can achieve both of abrasion resistance and the suppression of a ghost. The electrophotographic photosensitive member includes: a support; an undercoat layer; a charge-generating layer; and a charge-transporting layer, the undercoat layer, the charge-generating layer, and the charge-transporting layer being arranged in the stated order on the support, wherein the charge-transporting layer includes a charge-transporting substance, and a polymer containing a structure represented by the following general formula (1) and a structure represented by the following general formula (2), wherein the charge-generating layer includes a phthalocyanine crystal and a binder resin, and wherein the undercoat layer includes strontium titanate particles and a binder resin.
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公开(公告)号：US20200341393A1
公开(公告)日：2020-10-29
申请号：US16926762
申请日：2020-07-12
申请人： FUJI XEROX CO., LTD.
发明人： Masahiro IWASAKI , Wataru YAMADA , Kenji KAJIWARA , Kota MAKI
摘要： An electrophotographic photoreceptor includes a conductive substrate, an undercoating layer that is disposed on the conductive substrate, and a photosensitive layer that is disposed on the undercoating layer, in which the undercoating layer contains at least one perinone compound selected from the group consisting of the compounds represented by Formulas (1) and (2), and at least one acceptor compound selected from the group consisting of compounds represented by Formula (3) to (15) which are shown in the specification.
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10.发明申请公开(公告)号：US20200218171A1
公开(公告)日：2020-07-09
申请号：US16731150
申请日：2019-12-31
发明人： Eileen Takeuchi , Koichi Nakata , Shubun Kujirai , Haruki Mori
摘要： Provided is an electrophotographic photosensitive member including a surface layer containing: a copolymerization product of a composition containing a hole-transportable compound having a chain-polymerizable functional group and a compound having a specific structure; and metal oxide particles.
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