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1.发明申请公开(公告)号：US20180356745A1
公开(公告)日：2018-12-13
申请号：US15996741
申请日：2018-06-04
Applicant: CANON KABUSHIKI KAISHA
Inventor： Koji Takahashi , Mai Murakami , Yoshihisa Saito
CPC classification number: G03G5/14756 , G03G5/0614 , G03G5/0618 , G03G5/0672 , G03G5/071 , G03G5/075 , G03G5/14734 , G03G5/14786 , G03G5/14795 , G03G21/1803
Abstract: Provided is an electrophotographic photosensitive member, including: a support; a charge-generating layer on the support; a charge-transporting layer on the charge-generating layer; and a protective layer on the charge-transporting layer, wherein the protective layer contains the following components (α), (β), and (γ): (α) a polymer of a hole-transportable compound; (β) a polycarbonate resin; and (γ) a hole-transportable compound, wherein a content of the component (β) in the protective layer is 0.01 mass % or more and 4.0 mass % or less with respect to a content of the component (α) in the protective layer, wherein a content of the component (γ) in the protective layer is 0.001 mass % or more and 3.0 mass % or less with respect to the content of the component (α) in the protective layer, and wherein the charge-transporting layer contains the component (γ).
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2.发明申请公开(公告)号：US20180356744A1
公开(公告)日：2018-12-13
申请号：US16000674
申请日：2018-06-05
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tomofumi SHIMIZU
IPC: G03G5/06
CPC classification number: G03G5/0618 , G03G5/0507 , G03G5/0564 , G03G5/0603 , G03G5/0607 , G03G5/0609 , G03G5/0614 , G03G5/0616 , G03G5/0631 , G03G5/0638 , G03G5/0642 , G03G5/0648 , G03G5/0651
Abstract: An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer having a single-layer structure. The photosensitive layer contains a charge generating material, an electron transport material, a polycarbonate resin, and a hole transport material. The electron transport material includes a compound having a halogen atom and represented by general formula (1), (2), (3), (4), or (5). The hole transport material includes a compound represented by general formula (20), (21), (22), (23), (24), (25), (26), or (27). A charge of calcium carbonate as measured by charging the calcium carbonate through friction with the photosensitive layer is at least +6.5 μC/g. A Vickers hardness of the photosensitive layer at 45° C. is at least 17.0 HV.
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公开(公告)号：US10073365B2
公开(公告)日：2018-09-11
申请号：US15635949
申请日：2017-06-28
Applicant: Konica Minolta, Inc.
Inventor： Mari Ueda , Toshiyuki Fujita , Haruo Horiguchi
CPC classification number: G03G5/14717 , G03G5/047 , G03G5/0507 , G03G5/0525 , G03G5/0532 , G03G5/0542 , G03G5/0546 , G03G5/0564 , G03G5/0614 , G03G5/0618 , G03G5/062 , G03G5/0696 , G03G5/102 , G03G5/14704 , G03G5/14734 , G03G5/14791 , G03G15/75
Abstract: Provided is an electrophotographic photoreceptor including a conductive support, a photosensitive layer, and a surface protective layer disposed in sequence. The surface protective layer includes a cured product of a composition containing a polymerizable compound, a charge transporting material, and at least two polymerization initiators. The polymerization initiators include an acyl phosphine oxide and an O-acyl oxime.
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公开(公告)号：US20180224761A1
公开(公告)日：2018-08-09
申请号：US15885045
申请日：2018-01-31
Applicant: Konica Minolta, Inc.
Inventor： Toshiyuki Fujita , Haruo Horiguchi
CPC classification number: G03G5/0618 , G03G5/047 , G03G5/0614 , G03G5/071 , G03G5/102 , G03G5/14721 , G03G5/1473
Abstract: An object of the present invention is achieved by an electrophotographic photoreceptor containing a conductive support sequentially laminated thereon with at least a photosensitive layer and a protective layer in that order, wherein the protective layer includes a cured composition having a radical polymerizable compound for a binder, a charge transport agent having a radical polymerizable functional group, and a photopolymerization initiator; the charge transport agent having a radical polymerizable functional group has a maximum absorption wavelength in the range of 405±50 nm; and the charge transport agent having a radical polymerizable functional group and the photopolymerization initiator satisfy Formula (A), ΔG=Eox(D/D+)−Ered(A−/A)−E*≤−0.2(eV). Formula (A):
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公开(公告)号：US20180157183A1
公开(公告)日：2018-06-07
申请号：US15827830
申请日：2017-11-30
Applicant: KYOCERA Document Solutions Inc.
Inventor： Hideki OKADA
IPC: G03G5/082 , G03G5/047 , G03G5/05 , C07C211/58 , C07C217/84 , G03G5/043
CPC classification number: G03G5/065 , C07C211/58 , C07C217/84 , G03G5/043 , G03G5/047 , G03G5/0564 , G03G5/0567 , G03G5/0592 , G03G5/0614 , G03G5/0618 , G03G5/0633 , G03G5/0638
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US20180081286A1
公开(公告)日：2018-03-22
申请号：US15450162
申请日：2017-03-06
Applicant: FUJI XEROX CO., LTD.
Inventor： Akihiro KAWASAKI
CPC classification number: G03G5/047 , G03G5/0564 , G03G5/0607 , G03G5/0618 , G03G5/062 , G03G5/14791 , G03G5/14795 , G03G21/18
Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate which serves as an outermost surface of the electrophotographic photoreceptor. The electrophotographic photoreceptor satisfies YC−YA≧0.1 MPa, YC−YB≧0.1 MPa, and YC≦4.5 MPa, where YA, YB, and YC (MPa) represent the Young's moduli of a surface of the photosensitive layer determined by nanoindentation at an indentation depth of 500 nm at end portions A and B extending from a position 10 mm to a position 70 mm from the respective edges of the photosensitive layer toward the center of the photosensitive layer in an axial direction of the electrophotographic photoreceptor and a central portion C extending from a position 20 mm in front of and to a position 20 mm behind the center of the photosensitive layer in the axial direction of the electrophotographic photoreceptor, respectively.
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7.发明申请公开(公告)号：US20180052401A1
公开(公告)日：2018-02-22
申请号：US15446629
申请日：2017-03-01
Applicant: FUJI XEROX CO., LTD.
Inventor： Yoshiteru YAMADA , Yohei SAITO
CPC classification number: G03G5/047 , G03G5/06 , G03G5/0607 , G03G5/0614 , G03G5/0618 , G03G5/0672 , G03G5/0696 , G03G21/18
Abstract: An electrophotographic photosensitive member includes a conductive base, and a single-layer photosensitive layer disposed directly on the conductive base and containing a charge generation material. A difference between a work function of the conductive base and an electron affinity of the charge generation material is in a range of from about −0.1 to about +0.1 eV. A difference between a current Ia and a current Ib is in a range of from about 5.5×10−8 to about 9.2×10−8 [A/cm2] when a gold electrode is provided on the photosensitive layer, where the current Ia is a current when an electric field is applied by applying a voltage so that the gold electrode becomes positive, and the current Ib is a current when an electric field is applied by applying a voltage so that the conductive base becomes positive.
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公开(公告)号：US20180052400A1
公开(公告)日：2018-02-22
申请号：US15450136
申请日：2017-03-06
Applicant: FUJI XEROX CO., LTD.
Inventor： Yu NAKAMURA
CPC classification number: G03G5/0614 , G03G5/06 , G03G5/0607 , G03G5/0618 , G03G5/0668 , G03G5/0672
Abstract: An electrophotographic photoreceptor includes a conductive substrate and a single-layer-type photosensitive layer on the conductive substrate. The single-layer-type photosensitive layer contains a binder resin, a charge generating material, an electron transporting material, and two hole transporting materials having different redox potentials. The two hole transporting materials are a hole transporting material A and a hole transporting material B that has a redox potential lower than that of the hole transporting material A. The ratio A/B of a weight of the hole transporting material A to a weight of the hole transporting material B is about 12/1 or more and about 36/1 or less.
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公开(公告)号：US20180024450A1
公开(公告)日：2018-01-25
申请号：US15635949
申请日：2017-06-28
Applicant: Konica Minolta, Inc.
Inventor： Mari UEDA , Toshiyuki Fujita , Haruo Horiguchi
CPC classification number: G03G5/14717 , G03G5/047 , G03G5/0507 , G03G5/0525 , G03G5/0532 , G03G5/0542 , G03G5/0546 , G03G5/0564 , G03G5/0614 , G03G5/0618 , G03G5/062 , G03G5/0696 , G03G5/102 , G03G5/14704 , G03G5/14734 , G03G5/14791 , G03G15/75
Abstract: Provided is an electrophotographic photoreceptor including a conductive support, a photosensitive layer, and a surface protective layer disposed in sequence. The surface protective layer includes a cured product of a composition containing a polymerizable compound, a charge transporting material, and at least two polymerization initiators. The polymerization initiators include an acyl phosphine oxide and an O-acyl oxime.
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公开(公告)号：US09846378B2
公开(公告)日：2017-12-19
申请号：US15207687
申请日：2016-07-12
Applicant: FUJI XEROX CO., LTD.
Inventor： Masahiro Iwasaki
CPC classification number: G03G5/142 , G03G5/0564 , G03G5/0607 , G03G5/0609 , G03G5/0612 , G03G5/0614 , G03G5/0618 , G03G5/0672 , G03G5/0696 , G03G5/10 , G03G5/102 , G03G15/75 , G03G21/18
Abstract: An electrophotographic photoreceptor includes a conductive substrate including an outer peripheral surface treated with a silazane; and a photosensitive layer on the outer peripheral surface of the conductive substrate. The photosensitive layer includes a charge generating material and a charge transporting material.
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