摘要:
An electrophotographic photosensitive member includes a support, an undercoat layer formed on the support, and a photosensitive layer which is formed on the undercoat layer and contains a charge generating substance and a hole transporting substance. The undercoat layer contains a specific amine compound, titanium oxide crystal particles having an average primary particle diameter of 3 nm or more and 15 nm or less and an organic resin.
摘要:
An electrophotographic photosensitive member exhibiting good potential characteristic and image forming characteristic fee from difficulties, such as lower image density, black spots and fog or interference fringes in halftone images, over wide temperature and humidity environment condition, is provided by inserting a specific intermediate layer between a support and a photosensitive layer. The intermediate layer comprises at at least 0.5 µm-thick layer of aggregated particles having a composition represented by formula (1) below:Al 2 O 3 ·nH 2 O wherein n is a number of at least 0 representing a degree of hydration.
摘要:
An electrophotographic photosensitive member capable of outputting an image in which a defect such as a ghost is suppressed even in a high-temperature-and-high-humidity environment, and in which a defect such as a change in density due to an abrupt change in light-area potential at an initial stage or a ghost due to long-term durable use is suppressed even in a low-humidity environment; and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member; are provided. The electrophotographic photosensitive member has a layer which comrises a compound having a specific structure between a support and a charge-generating layer.
摘要:
An electrophotographic photosensitive member exhibiting good potential characteristic and image forming characteristic fee from difficulties, such as lower image density or black spots and fog, over wide temperature and humidity environment condition, is provided by inserting a specific intermediate layer between a support and a photosensitive layer. The intermediate layer comprises an organic acid aluminum salt compound, preferably formed by heating an aqueous dispersion sol formed by reaction of an organic aluminum compound or a hydrolyzate thereof with an organic acid in an aqueous medium.
摘要:
A transfer sheet has a base layer and a specific surface layer. In a plot graph with load P (mN) as ordinate and the square of indentation depth A (µm) as abscissa, plotted when the tip of a diamond triangular pyramid penetrator having a dihedral angle of 80° is pressed in on the side of the surface layer, the plot graph has a first flexing point that appears first, a first region extending from the first flexing point to zero and a second-and-further region subsequent to the first flexing point, and a gradient H of the graph in the first region is 0.09 mN/µm 2 or smaller. Also disclosed are image-forming methods making use of such a transfer sheet. The transfer sheet has a superior effect of keeping dot toner images from scattering at the time of transfer.
摘要:
A photosensitive layer or a charge generation layer of an electrophotographic photosensitive member (1) contains a gallium phthalocyanine and a particular diamine compound such as 1,2-diaminoethane or 1,3-diaminopropane. The content of the particular diamine compound in the photosensitive layer or the charge generation layer is from 10 ppm to 1,000 ppm (mass ratio) based on the gallium phthalocyanine.
摘要:
A charge-generating layer of an electrophotographic photosensitive member (1) includes a phthalocyanine pigment and a specific tricyanoethylene compound. Alternatively, the charge-generating layer and/or an undercoat layer of the electrophotographic photosensitive member (1) includes a specific tricyanoethylene compound, and the charge-generating layer includes the phthalocyanine pigment.