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公开(公告)号：US20180113403A1
公开(公告)日：2018-04-26
申请号：US15703805
申请日：2017-09-13
CPC分类号： G03G15/162 , G03B21/28 , G03G5/047 , G03G5/0503 , G03G5/0546 , G03G5/056 , G03G5/0592 , G03G5/0596 , G03G5/0664 , G03G5/075 , G03G15/0194 , G03G15/161 , G03G2215/00962 , G03G2215/1652 , G03G2215/1661 , G03G2221/183 , H04N5/74
摘要： An image forming method includes forming an image with a toner using a photoconductor in which an intermediate layer and a photosensitive layer including a charge generating layer and a charge transport layer are formed overlying an electroconductive substrate, wherein the ionization potential of the surface of the photoconductor and the ionization potential of the surface of the toner satisfy the following relations 1 and 2, |Ip(the surface of the photoconductor)−Ip(the surface of the toner)|≤0.18 (eV) Relation 1 5.45 (eV)≤Ip(the surface of the photoconductor)≤5.53 (eV) Relation 2 where Ip (the surface of the photoconductor) represents the ionization potential of the surface of the photoconductor and Ip (the surface of the toner) represents the ionization potential of the surface of the toner.
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公开(公告)号：US20180081287A1
公开(公告)日：2018-03-22
申请号：US15452181
申请日：2017-03-07
申请人： FUJI XEROX CO., LTD.
IPC分类号： G03G5/047
CPC分类号： G03G5/047 , G03G5/0564 , G03G5/0607 , G03G5/0618 , G03G5/062 , G03G5/0696 , G03G21/18
摘要： 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 a hole transporting material. The product of a volume resistivity (GΩ·m) of the single-layer-type photosensitive layer and an elastic modulus (GPa) of the single-layer-type photosensitive layer is about 90 or more.
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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：US20170307989A1
公开(公告)日：2017-10-26
申请号：US15492914
申请日：2017-04-20
发明人： Jun AZUMA , Takahiro OKI , Kensuke OKAWA , Akihiko OGATA
CPC分类号： G03G5/056 , G03G5/047 , G03G5/0517 , G03G5/0525 , G03G5/0542 , G03G5/0564 , G03G5/0614 , G03G5/0672 , G03G5/0696 , G03G5/102 , G03G5/144
摘要： An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer contains at least a charge generating material, a charge transport material, and a binder resin. The binder resin includes a polyarylate resin. The polyarylate resin is represented by general formula (1) shown below. In general formula (1), X represents a divalent group represented by chemical formula (1-1), (1-2), (1-3), or (1-4) shown below.
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公开(公告)号：US20170307988A1
公开(公告)日：2017-10-26
申请号：US15484715
申请日：2017-04-11
申请人： Tomoharu ASANO , Tetsuro Suzuki , Eiji Kurimoto , Daisuke Nii , Toshihiro Ishida
发明人： Tomoharu ASANO , Tetsuro Suzuki , Eiji Kurimoto , Daisuke Nii , Toshihiro Ishida
CPC分类号： G03G5/144 , G03G5/047 , G03G5/0517 , G03G5/0612 , G03G5/0614 , G03G5/0696 , G03G5/142 , G03G15/75
摘要： A photoconductor including a conductive support, an undercoat layer, a charge-generating layer, and a charge-transporting layer, at least the undercoat layer, the charge-generating layer, and the charge-transporting layer being disposed on the conductive support in an order mentioned, wherein the undercoat layer includes a binder resin and metal oxide particles, and the charge-generating layer includes a binder resin, a titanyl phthalocyanine pigment, and a salicylic acid derivative.
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17.发明授权公开(公告)号：US09766561B2
公开(公告)日：2017-09-19
申请号：US15077185
申请日：2016-03-22
CPC分类号： G03G5/07 , G03G5/047 , G03G5/056 , G03G5/0564 , G03G2215/00957
摘要： The present invention provides an electrophotographic photosensitive member including a support, and a photosensitive layer on the support. The photosensitive layer has a charge generating layer containing a charge generating material and a charge transporting layer containing a charge transporting material, in this order. The charge transporting layer contains (α) a specific polycarbonate resin or a specific polyester resin, (β) the charge transporting material, (γ) a methoxybenzene, and (δ) a methoxybenzene, a methoxycyclohexane or a methylhexanol having a substituent. The content Wδ of the (δ) is 0.001% by mass or more and 1% by mass or less based on the total mass of the charge transporting layer.
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公开(公告)号：US09746816B2
公开(公告)日：2017-08-29
申请号：US13033338
申请日：2011-02-23
申请人： Tadashi Mizushima , Akiteru Fujii , Takayuki Shoda
发明人： Tadashi Mizushima , Akiteru Fujii , Takayuki Shoda
CPC分类号： G03G5/047 , G03G5/04 , G03G5/043 , G03G5/0525 , G03G5/0542 , G03G5/056 , G03G5/0567 , G03G5/0614 , G03G5/0618 , G03G5/0629 , G03G5/1473 , G03G9/0819 , G03G9/0827 , G03G9/08711 , G03G9/0904 , G03G9/0906 , G03G9/0926 , G03G9/09321 , G03G9/09364 , G03G9/09385 , G03G9/09392 , G03G21/0005 , G03G21/0011 , G03G2215/00957 , G03G2215/0604
摘要： The invention is to provide an image forming apparatus and an electrophotographic cartridge, which are free from problems of cleaning failure, filming, soiling, residual images (ghosts), fogging, density reduction, noise and the like and which can provide high-definition images even when a toner having a small particle size and having a high degree of circularity is used and even when a photoreceptor having a small outer diameter is used. An image forming apparatus comprising: an electrophotographic photoreceptor containing a conductive support and a photosensitive layer on the conductive support, a charging unit for charging the electrophotographic photoreceptor, an imagewise exposing unit for imagewise exposing the charged electrophotographic photoreceptor to form an electrostatic latent image thereon, a developing unit for developing the electrostatic latent image with a toner, and a transferring unit for transferring the toner from the electrophotographic photoreceptor to a receiving unit, wherein the outer diameter of the electrophotographic photoreceptor is 20 mm or less, the photosensitive layer contains a polyarylate resin, and the toner satisfies the specific requirements (1) and (2).
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公开(公告)号：US20170205719A1
公开(公告)日：2017-07-20
申请号：US15468145
申请日：2017-03-24
发明人： Tadashi MIZUSHIMA , Akiteru Fujii , Takayuki Shoda
CPC分类号： G03G5/047 , G03G5/04 , G03G5/043 , G03G5/0525 , G03G5/0542 , G03G5/056 , G03G5/0567 , G03G5/0614 , G03G5/0618 , G03G5/0629 , G03G5/1473 , G03G9/0819 , G03G9/0827 , G03G9/08711 , G03G9/0904 , G03G9/0906 , G03G9/0926 , G03G9/09321 , G03G9/09364 , G03G9/09385 , G03G9/09392 , G03G21/0005 , G03G21/0011 , G03G2215/00957 , G03G2215/0604
摘要： The invention is to provide an image forming apparatus and an electrophotographic cartridge, which are free from problems of cleaning failure, filming, soiling, residual images (ghosts), fogging, density reduction, noise and the like and which can provide high-definition images even when a toner having a small particle size and having a high degree of circularity is used and even when a photoreceptor having a small outer diameter is used. An image forming apparatus comprising: an electrophotographic photoreceptor containing a conductive support and a photosensitive layer on the conductive support, a charging unit for charging the electrophotographic photoreceptor, an imagewise exposing unit for imagewise exposing the charged electrophotographic photoreceptor to form an electrostatic latent image thereon, a developing unit for developing the electrostatic latent image with a toner, and a transferring unit for transferring the toner from the electrophotographic photoreceptor to a receiving unit, wherein the outer diameter of the electrophotographic photoreceptor is 20 mm or less, the photosensitive layer contains a polyarylate resin, and the toner satisfies the specific requirements (1) and (2).
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公开(公告)号：US09709906B2
公开(公告)日：2017-07-18
申请号：US14817315
申请日：2015-08-04
发明人： Mitsuo Wada
IPC分类号： G03G5/043 , G03G5/047 , C07C211/54 , G03G5/06
CPC分类号： G03G5/047 , C07C211/54 , G03G5/0614 , G03G5/0672 , G03G5/0696
摘要： The present invention is to provide a charge transport substance having high resistance to stress within electrophotographic processes, an electrophotographic photoreceptor which has excellent high-speed responsiveness, shows a sufficient residual potential, and has high resistance to stress within electrophotographic processes, an electrophotographic cartridge, and an image-forming apparatus. The invention provides a charge transport substance having a specific structure. The invention further provides an electrophotographic photoreceptor including a photosensitive layer which contains the charge transport substance having a specific structure, an electrophotographic cartridge, and an image-forming apparatus, equipped with this electrophotographic photoreceptor.
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