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公开(公告)号：US20190094724A1
公开(公告)日：2019-03-28
申请号：US15946312
申请日：2018-04-05
申请人： FUJI XEROX CO., LTD.
发明人： Eri KUNISAWA
CPC分类号： G03G5/0696 , G03G5/0514 , G03G5/0525 , G03G5/0542 , G03G5/0564 , G03G5/06 , G03G5/0614 , G03G2215/00957
摘要： An electrophotographic photoreceptor includes a conductive substrate, a charge-generating layer disposed on the conductive substrate, and a charge-transporting layer as an outermost layer disposed on the charge-generating layer and containing a binder resin and a charge-transporting material, wherein the average particle size of the crystal of the charge-transporting material is approximately from 0.1 μm to 5.0 μm.
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公开(公告)号：US20190025720A1
公开(公告)日：2019-01-24
申请号：US16035859
申请日：2018-07-16
发明人： Jun AZUMA , Kensuke KOJIMA , Tomofumi SHIMIZU
CPC分类号： G03G5/0618 , G03G5/0546 , G03G5/056 , G03G5/0564 , G03G5/0607 , G03G5/0609 , G03G5/0614 , G03G5/0651 , G03G5/0677
摘要： An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer includes a charge generating layer and a charge transport layer. The charge generating layer contains a charge generating material. The charge transport layer contains a hole transport material and a binder resin. The charge transport layer further contains an electron acceptor compound. The hole transport material includes a compound represented by general formula (1). In general formula (1), R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 each represent, independently of one another, a hydrogen atom or a methyl group.
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公开(公告)号：US10078276B2
公开(公告)日：2018-09-18
申请号：US15160601
申请日：2016-05-20
发明人： Hiroki Tsurumi , Eiichi Miyamoto
CPC分类号： G03G5/0614 , G03G5/0603 , G03G5/0605 , G03G5/0607 , G03G5/0609 , G03G5/0618 , G03G5/0672 , G03G15/02 , G03G21/18
摘要： A positively chargeable single-layer electrophotographic photosensitive member is used as an image bearing member in an image forming apparatus including a charging section configured to be in contact with the image bearing member to apply a voltage thereto. The positively chargeable single-layer electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer contains at least a charge generating material, a hole transport material, an electron transport material, and a binder resin. The hole transport material contains a triarylamine derivative represented by the following general formula (I). In general formula (I), R1, R2, m and n have the same meaning as R1, R2, m, and n defined in the description.
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公开(公告)号：US20180246402A1
公开(公告)日：2018-08-30
申请号：US15899400
申请日：2018-02-20
发明人： Jun AZUMA
CPC分类号： G03C1/7954 , C07C211/01 , C07C211/54 , C08G63/189 , C08G63/195 , C08G63/40 , C08G65/38 , C08G81/00 , C08L67/025 , C08L101/00 , G03C1/06 , G03G5/056 , G03G5/0614 , G03G5/0672
摘要： A polyarylate resin is represented by general formula (1) shown below. In general formula (1), R1 represents a hydrogen atom or methyl group. R2 and R3 each represent a hydrogen atom or an alkyl group having a carbon number of at least 1 and no greater than 4. R2 and R3 are not the same as one another. When R1 represents a hydrogen atom, R2 and R3 are not bonded to one another. When R1 represents a methyl group, R2 and R3 are optionally bonded to one another to form a ring. r and s each represent a number greater than or equal to 0 and less than or equal to 49. t and u each represent a number greater than or equal to 1 and less than or equal to 50. r+s+t+u=100. r+t=s+u.
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公开(公告)号：US09977354B2
公开(公告)日：2018-05-22
申请号：US15376941
申请日：2016-12-13
发明人： Kazutaka Ida , Akiteru Fujii
CPC分类号： G03G5/047 , G03G5/0507 , G03G5/0564 , G03G5/0612 , G03G5/0614 , G03G5/0616 , G03G5/0668 , G03G5/0672
摘要： Provided is a lamination-type electrophotographic photoreceptor comprising a conductive substrate, and a charge transport layer and a charge generation layer both on the conductive substrate, wherein the charge transport layer comprises a charge transport substance represented by the general formula (1), a binder resin, and a particulate silicon compound.
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公开(公告)号：US09946175B2
公开(公告)日：2018-04-17
申请号：US15128914
申请日：2015-03-23
CPC分类号： G03G5/07 , G03G5/0564 , G03G5/0603 , G03G5/0605 , G03G5/0609 , G03G5/0614 , G03G5/0618 , G03G5/0696 , G03G5/14743 , G03G21/18
摘要： To provide an electrophotographic photosensitive member which satisfies abrasion resistance and electrical properties and which is difficult to cause image deletion. A surface layer of the electrophotographic photosensitive member of this invention contains a polymerized product of a hole transporting compound having a polymerizable functional group, in which the hole transporting compound is at least one compound selected from the group consisting of: a compound consisting of one or more carbon atoms, one or more hydrogen atoms, and one or more halogen atoms; and a compound consisting of one or more carbon atoms, one or more hydrogen atoms, one or more oxygen atoms, and one or more halogen atoms.
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7.发明申请公开(公告)号：US20180046101A1
公开(公告)日：2018-02-15
申请号：US15667678
申请日：2017-08-03
发明人： Tomofumi SHIMIZU , Keiji MARUO , Jun AZUMA
CPC分类号： G03G5/056 , G03G5/0596 , G03G5/0605 , G03G5/0607 , G03G5/0609 , G03G5/0614 , G03G5/0618 , G03G5/0631 , G03G5/0637 , G03G5/0646 , G03G15/75 , G03G21/1814
摘要： An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer is a single-layer photosensitive layer. The photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. The binder resin contains a polyarylate resin (1). The polyarylate resin is represented by general formula (1). The photosensitive layer has a scratch resistance depth of no greater than 0.50 μm. The photosensitive layer has a Vickers hardness of at least 17.0 HV.
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公开(公告)号：US09880477B2
公开(公告)日：2018-01-30
申请号：US14869364
申请日：2015-09-29
发明人： Akiteru Fujii
CPC分类号： G03G5/047 , G03G5/0525 , G03G5/056 , G03G5/0605 , G03G5/0607 , G03G5/0614 , G03G5/0696
摘要： The invention provides an image forming apparatus and an electrophotographic photoreceptor, comprising: a conductive support; and at least a charge generation layer and a charge transport layer on the conductive support, wherein said charge generation layer contains a hydroxygallium phthalocyanine synthesized using a halogen solvent, said charge transport layer contains a polyester resin having a specific structural unit, and said charge transport layer is formed using a non-halogen solvent.
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公开(公告)号：US09874824B2
公开(公告)日：2018-01-23
申请号：US14859920
申请日：2015-09-21
发明人： Akira Ando
CPC分类号： G03G5/047 , G03G5/0564 , G03G5/0609 , G03G5/0614 , G03G5/0616 , G03G5/0696 , G03G5/14708 , G03G5/14756
摘要： An electrophotographic photoreceptor comprising at least a photosensitive layer on a conductive substrate, wherein the photosensitive layer is a laminate having a charge transport layer and a charge generation layer, the charge transport layer contains four or more types of compounds each having a maximum absorption wavelength falling within a wavelength range of from 300 nm to 600 nm in a tetrahydrofuran solution at 25° C., and maximum absorption wavelengths falling within the wavelength range of at least four types of the compounds of said four or more types of the compounds are separated from each other by 10 nm or more.
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公开(公告)号：US20170363978A1
公开(公告)日：2017-12-21
申请号：US15618243
申请日：2017-06-09
发明人： Hideki OKADA
IPC分类号： G03G5/06 , G03G5/05 , C07C49/683 , C07C2602/10 , C07C2603/74
CPC分类号： G03G5/0609 , C07C49/683 , C07C2601/14 , C07C2602/10 , C07C2603/74 , G03G5/0564 , G03G5/0607 , G03G5/0614 , G03G5/0696
摘要： A quinone derivative is represented by general formula (1). In general formula (1), at least one of R1-R3 and at least one of R4-R6 each represent, independently of one another, an alkyl group having 4 to 10 carbon atoms or an alkyl group having 2 to 5 carbon atoms that has an aryl group having 6 to 14 carbon atoms. All other of R1-R3 and all other of R4-R6 each represent, independently of one another, an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 14 carbon atoms, or a cycloalkyl group having 3 to 10 carbon atoms.
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