Abstract:
The presently disclosed embodiments are directed to charge transport layers useful in electrostatography. More particularly, the embodiments pertain to an improved imaging member having a charge transport layer comprising a top layer and a bottom layer, wherein the layers have varying concentrations of high quality N,N,N′N′-tetra(4-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine to provide tunable discharge rate.
Abstract:
The present invention provides a latent electrostatic image bearing member which includes a support, a charge generating layer, and a charge transporting layer, the charge generating layer and the charge transporting layer being arranged in this order on or above the support, wherein the charge transporting layer comprises at least a charge transporting material and a binder resin and has a thickness of 30 μm to 50 μm; and the distribution representing the relation between the absorbance ratio of the charge transporting material and the binder resin measured by infrared spectroscopy and the distance from the surface of the charge transporting layer toward the thickness direction thereof represents a generally linear shape without having inflection points within 20 μm from the surface of the charge transporting layer toward the thickness thereof.
Abstract:
An imaging member containing an optional supporting substrate, a photogenerating layer and at least one charge transport layer, and wherein said photogenerating layer contains at least one thiophosphate.
Abstract:
An imaging member containing an optional supporting substrate, a photogenerating layer and at least one charge transport layer of at least one charge transport component, at least one polyphenyl thioether of the formula wherein R1, R2, and R3 are independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, substituted alkyl, substituted aryl, substituted alkoxy, and halogen mixtures thereof, and n is a number of, for example, from about 1 to about 10.
Abstract:
Methods of forming a self-assembled patterned binder layer, which may include at least one functional material, that is particularly suitable for use in photoreceptor devices.
Abstract:
A production method of an electrophotographic photosensitive member which has high productivity when producing a surface layer in which depressed portions which are independent respectively are formed on an electrophotographic photosensitive member surface, and can produce highly uniform depressed portions in a photosensitive member surface, characterized by producing the surface layer by (1) a coating step of producing a coating liquid for a surface layer containing a binder resin and a specific solvent, and coating it on a surface of a cylindrical supporting member, (2) a condensation step of holding the cylindrical supporting member on which the coating liquid for a surface layer is coated, and condensing the surface of the cylindrical supporting member, and (3) a drying step of baking the cylindrical supporting member.
Abstract:
An electrophotographic photoreceptor containing a naphthalenetetracarboxylic acid diimide derivative of Formula (1), which has a branched alkyl group substituted with an aryl group at the α-position with regard to nitrogen atoms of imide groups: wherein R1 and R2 are independently selected from the group consisting of a hydrogen atom, a halogen atom, a C1-C20 substituted or unsubstituted alkyl group, and a C1-C20 substituted or unsubstituted alkoxy group; R3 is selected from the group consisting of a C1-C20 substituted or unsubstituted alkyl group, a C1-C20 substituted or unsubstituted alkoxy group, a C7-C30 substituted or unsubstituted aralkyl group, and a group having the formula —(CH2)n—Y—R4; Ar is a C6-C30 substituted or unsubstituted aryl group; Y is an oxygen or sulfur atom; R4 is a hydrogen atom or a C1-C20 substituted or unsubstituted alkyl group; and n is an integer between 1 and 12. The naphthalenetetracarboxylic acid diimide derivative has high solubility in organic solvents and compatibility with binder resins, thus providing better electron transporting ability. The invention is also directed to an electrophotographic imaging apparatus using the photoreceptor.
Abstract translation:含有式(1)的萘四甲酸二酰亚胺衍生物的电子照相感光体,其具有相对于酰亚胺基团的氮原子在α位被芳基取代的支链烷基:其中R 1, R 2和R 2独立地选自氢原子,卤素原子,C 1 -C 20 - 取代或未取代的烷基 基团和C 1 -C 20取代或未取代的烷氧基; R 3 3选自C 1 -C 20 - 取代或未取代的烷基,C 1〜 取代或未取代的烷氧基,C 7 -C 30取代或未取代的芳烷基,以及具有式 - (CH 2)n - n R 4; Ar是C 6 -C 30取代或未取代的芳基; Y是氧或硫原子; R 4是氢原子或C 1 -C 20 - 取代或未取代的烷基; n为1〜12的整数。萘四甲酸二酰亚胺衍生物在有机溶剂中的溶解性高,与粘合剂树脂的相溶性好,因此具有更好的电子传输能力。 本发明还涉及使用感光体的电子照相成像设备。
Abstract:
Positive-charge injection-related ghosting of images in electrophotographic processes is addressed by electrophotographic photoreceptors that include a positive-charge injection preventing layer that includes one or more positive-charge-injection preventing compounds. In addition, processes are provided for preventing positive charge injection, in which the processes include a step of applying a positive-charge injection preventing composition to an electrophotographic photoreceptor in which the positive-charge injection preventing composition includes one or more positive-charge-injection preventing compound.
Abstract:
An imaging member containing a substrate, and an outer layer containing a zinc diethyldithiophosphate, and an image forming apparatus for forming images on a recording medium including the imaging member above, a development component to apply a developer material to said charge-retentive surface to develop said electrostatic latent image to form a developed image on said charge-retentive surface; a transfer component for transferring said developed image from said charge-retentive surface to another member or a copy substrate; and a fusing member to fuse said developed image to said copy substrate.
Abstract:
The electrophotographic photoreceptor of the present invention includes a cylindrical support, a photosensitive layer and an outermost surface layer that are layered onto the cylindrical support in this sequence from the cylindrical support side. The outermost surface layer includes a charge transport material and a curable resin. The proportion of the content of the curable resin in the outermost surface layer increases in the layer thickness direction with distance from the photosensitive layer side. The process cartridge and electrophotographic apparatus of the present invention are provided with the electrophotographic photoreceptor.