摘要:
A photoconductor includes a conductive substrate, an undercoat layer on the substrate, and at least one photosensitive layer on the undercoat layer. The radius of vacancy type defects in each of the photosensitive layer and in the undercoat layer is o.4 nm or less. In one embodiment, the radius of vacancy type defects is measured by a positron annihilation method.
摘要:
Multiple-seam electrostatographic imaging member belts include two or more imaging member portions joined together by two or more seams. The belts can be formed from imaging member web that either includes or does not include an anti-curl backing layer, and that includes a charge transport layer that is substantially stress free.
摘要:
A charge transport layer for an imaging member comprising a charge transport material with a single carbon cored dendrimeric, star-like molecular structure not exhibiting early onset of charge transport layer fatigue cracking. The charge transport layer exhibits excellent wear resistance, excellent electrical performance, and outstanding print quality.
摘要:
The present invention provides a negative charging electrophotographic photoreceptor, which includes an electroconductive substrate; a charge generation layer disposed on the electroconductive substrate; and a charge transport layer disposed on the charge generation layer; wherein the charge transport layer is in a homogeneous state; and wherein the charge generation layer has a light transmittance of at least 10% per micrometer of film thickness of the charge generation layer, or wherein the photoreceptor has an E50/E10 ratio in the range of 1 to 6, or wherein the charge generation layer has a light transmittance of at least 68% per micrometer of film thickness of the charge generation layer. The present invention provides methods of making and using the electrophotographic photoreceptor, and apparatuses which include the electrophotographic photoreceptor. The present invention also provides a method for optimizing an E50/E10 ratio in an electrophotographic photoreceptor to obtain S-shaped, high-&ggr; characteristics in the electrophotographic photoreceptor. By use of the present invention, a negative charging electrophotographic photoreceptor is obtained having excellent performances with respect to digital light input (high-&ggr; characteristics) and having a long life and high stability which make the photoreceptor suitable for repeated use.
摘要:
A process for producing an electrophotographic photoreceptor including a step of coating a light-sensitive layer on an electroconductive base, a step of removing part or all of oxidants present from an air atmosphere by an oxidants removing unit, a step of dealing with a coating solution for forming the light-sensitive layer in the air atmosphere from which concentration of oxidants is suppressed by the step of removing part or all of oxidants present, and a step of suppressing variation in the concentration of oxidants in the air atmosphere, wherein the step of dealing with the coating solution for the light-sensitive layer includes at least one of the steps of preparing the coating solution for forming the light-sensitive layer, applying the light-sensitive layer and drying an applied coating.
摘要:
An electrophotography photosensitive body has a single layer photosensitive layer on top of a conductive substrate, directly or via an undercoat layer. The single layer photosensitive layer contains at least a resin binder, a charge generating substance, and a charge transport substance, wherein at least one of the charge generating substances is a titanyl phthalocyanine, which, in a x-ray powder diffraction spectrum having a radiation source of CuK &agr; and within a range of a Bragg angle 2&thgr;=5˜35°, a ratio, R, of a value, P, of a diffraction intensity of a highest peak and a value, B, of a diffraction intensity of the background satisfies the equation R=(P−B)/B≦7.0. The resulting electrophotographic photosensitive layer shows excellent electrical properties with positive charging as well as excellent stability when repeatedly used.
摘要翻译:电子摄影感光体直接或经由底涂层在导电性基材的顶部具有单层感光层。 单层感光层至少含有树脂粘合剂,电荷产生物质和电荷输送物质,其中电荷产生物质中的至少一种是酞菁钛,其在具有辐射的x射线粉末衍射光谱 CuKα的源,并且在布拉格角2θ= 5〜35°的范围内,最高峰的衍射强度的值P和B的衍射强度的值B的比率R 背景满足方程式R =(PB)/ B <= 7.0。 所得到的电子照相感光层在反复使用时具有优异的正电荷电气性能以及优异的稳定性。
摘要:
A member including, for example, a supporting layer and a single photogenerating layer, the photogenerating layer comprising particles including hydroxygallium phthalocyanine phthalocyanine Type V, x polymorph metal free phthalocyanine, or chlorogallium phthalocyanine dispersed in a matrix comprising an arylamine hole transporter and an electron transporter selected from the group consisting of N,N′bis(1,2-dimethylpropyl)-1,4,5,8-naphthalenetetracarboxylic diimide, 1,1′-dioxo-2-(4-methylphenyl)-6-phenyl-4-(dicyanomethylidene)thiopyran, and a quinone selected from the group consisting of carboxybenzylhaphthaquinone, and tetra (t-butyl) diphenoquinone, and mixtures thereof, and submicrometer size polytetrafluroethylene particles, and a film forming binder.
摘要:
A biphenyl derivative is included in a photosensitive layer of an electrophotographic photoconductor. The electrophotographic photoconductor includes a single-layer photosensitive layer coated on a conductive substrate. The photosensitive layer includes a resin binder, a charge generation substance, a hole transport substance, and an electron transport substance. An electrophotographic apparatus using such an electrophotographic photoconductor has excellent electrical characteristics in a positive chargine system and is stable in repeated use.
摘要:
An electrophotographic photosensitive member, process cartridge and electrophotographic apparatus which use the same photosensitive member, and process for producing the same photosensitive member. The electrophotographic photosensitive member, includes a support and photosensitive layer thereon, wherein said photosensitive layer contains at least one of a hole-transporting compound with two or more chain-polymerizing functional groups in the same molecule and the compound hardened by polymerizing or cross-linking the above hole-transporting compound.