摘要:
A drum unit (20) for forming a toner image includes a cylindrical-shaped metal tubular member (31), a flange member (40) attached to one end of the metal tubular member (31) and a ground plate (50) attached to the flange member (40) and having an outer peripheral edge formed with a connection claw (52) that is so bent by the inner peripheral surface of the metal tubular member (31) as to bite into the inner peripheral surface for establishment of electrical conduction between the metal tubular member (31) and the ground plate (50). The flange member (40) has an edge, and the bending of the connection claw is carried out about a support point (412) defined by the edge. A calculational bending angle (θ) at which the connection claw (52) is bent about the support point (412) is set in the range of 10 to 45 degrees.
摘要:
The present invention provides an electrophotographic photoconductive member comprising a substrate, and a photoconductive layer containing a hole transferring material, a charge generating material and a binder resin, wherein a value (IV/OV value) in which the inorganic value is divided by the organic value of the binder resin is 0.36 or more and the hole transferring material contains an amine compound represented by the following general formula (1):
摘要:
Provided is a monolayer type photoconductor superior in sensitivity characteristics that allows reliable production by easy confirmation of the sensitivity characteristics, and an image forming device using such a monolayer type photoconductor. A monolayer type photoconductor including a base body and a single photo sensitive layer formed on the base body, the single photo sensitive layer containing a charge generating agent, a hole transfer agent, an electron transfer agent and a binding resin, wherein a maximum absorption wavelength (λmax) of the photo sensitive layer is set to a value of below 850 nm and an absorbance (A850) of light at a wavelength of 850 nm per unit thickness of the photo sensitive layer is set to a value of 0.05 μm−1 or less.
摘要:
Provided is a monolayer type photoconductor superior in sensitivity characteristics that allows reliable production by easy confirmation of the sensitivity characteristics, and an image forming device using such a monolayer type photoconductor. A monolayer type photoconductor including a base body and a single photo sensitive layer formed on the base body, the single photo sensitive layer containing a charge generating agent, a hole transfer agent, an electron transfer agent and a binding resin, wherein a maximum absorption wavelength (λmax) of the photo sensitive layer is set to a value of below 850 nm and an absorbance (A850) of light at a wavelength of 850 nm per unit thickness of the photo sensitive layer is set to a value of 0.05 μm−1 or less.
摘要:
The present invention provides an electrophotographic photoconductive member comprising a substrate, and a photoconductive layer containing a hole transferring material, a charge generating material and a binder resin, wherein a value (IV/OV value) in which the inorganic value is divided by the organic value of the binder resin is 0.36 or more and the hole transferring material contains an amine compound represented by the following general formula (1):
摘要:
Provided are an electrophotographic photoconductor which shows a small variation in sensitivity and exhibits a high sensitivity even at a small amount of light exposure and a tandem-system color image forming device provided with the electrophotographic photoconductor. A positive charging type electrophotographic photoconductor for use in a tandem-system color image forming device including a drum type electrophotographic photoconductor, a rotation speed of which is (70) rpm or more, and a color image forming device provided with the electrophotographic photoconductor, wherein, when Vb (V) denotes a sensitivity in the case where an amount of light exposure per unit area is 0.6 μJ/cm2 and Va (V) denotes a sensitivity in the case where an amount of light exposure per unit area is 1.5 μJ/cm2, a sensitivity ratio represented by Vb/Va is adjusted to a value of below (2).
摘要翻译:提供了一种电子照相感光体,其具有小的灵敏度变化并且即使在少量曝光下也显示出高灵敏度,并且具有电子照相感光体的串联系统彩色图像形成装置。 一种用于串联系统彩色图像形成装置的正电荷型电子照相感光体,其包括旋转速度为(70rpm或更高)的滚筒式电子照相感光体和设置有电子照相感光体的彩色图像形成装置,其中 当Vb(V)表示每单位面积的曝光量为0.6μJ/ cm 2时的灵敏度,Va(V)表示在光量的情况下的灵敏度 单位面积的曝光量为1.5μJ/ cm 2,由Vb / Va表示的灵敏度比调整为低于(2)的值。
摘要:
Disclosed are a phthalocyanine crystal in which an organic acceptor compound is associated with a phthalocyanine molecule, wherein said organic acceptor compound has a reduction potential to a reference electrode (Ag+/Ag) is not less than −1.5 V and not more than −0.5 V, and an electrophotosensitive material containing said phthalocyanine crystal as an electric charge generating material, which exhibits sufficient photosensitivity even in high-speed image forming apparatuses.
摘要:
The present invention relates to a titanyl phthalocyanine crystal having excellent storage stability of coating solution, to satisfy that (a) the crystal does not have a peak of a change in temperature except for a peak associated with evaporation of adsorbed water in differential scanning calorimetry or that (b) the crystal recovered after dipping in an organic solvent for 24 hours at least a maximum peak at a Bragg angle 2&thgr;±0.2°=27.2° and has no peak at 26.2° in a CuK &agr; characteristic X-ray diffraction spectrum, and a method of producing the same; and an electrophotosensitive material using the above crystal, and a method of producing the same.
摘要:
Provided are an electrophotographic photoconductor which shows a small variation in sensitivity and exhibits a high sensitivity even at a small amount of light exposure and a tandem-system color image forming device provided with the electrophotographic photoconductor. A positive charging type electrophotographic photoconductor for use in a tandem-system color image forming device including a drum type electrophotographic photoconductor, a rotation speed of which is (70) rpm or more, and a color image forming device provided with the electrophotographic photoconductor, wherein, when Vb (V) denotes a sensitivity in the case where an amount of light exposure per unit area is 0.6 μJ/cm2 and Va (V) denotes a sensitivity in the case where an amount of light exposure per unit area is 1.5 μJ/cm2, a sensitivity ratio represented by Vb/Va is adjusted to a value of below (2).
摘要翻译:提供了一种电子照相感光体,其具有小的灵敏度变化并且即使在少量曝光下也显示出高灵敏度,并且具有电子照相感光体的串联系统彩色图像形成装置。 一种用于串联系统彩色图像形成装置的正电荷型电子照相感光体,其包括旋转速度为(70rpm或更高)的滚筒式电子照相感光体和设置有电子照相感光体的彩色图像形成装置,其中 当Vb(V)表示在每单位面积的曝光量为0.6μmJ/ cm 2的情况下的灵敏度,Va(V)表示在每单位面积的曝光量为1.5μmJ/ cm 2的情况下的灵敏度, cm2,将由Vb / Va表示的灵敏度比调节至低于(2)的值。
摘要:
There is provided a tandem color image forming apparatus and the like, which is capable of suppressing the generation of black spots during a continuous image forming process, even though a non-magnetic single-component developer is used and a cleaner-less type is adopted. The color image forming apparatus is a tandem type that includes a plurality of image carriers and a cleaner-less type that does not include a blade cleaner, wherein the resistance per square centimeter of a base body of an image carrier using for at least a black developer among the plurality of image carriers, or the resistance per square centimeter of the base body through an intermediate layer is set in a range of 1×105 to 1×108Ω or more.