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Photoreceptor, image forming apparatus, process cartridge, and image forming method
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A photoreceptor and image technology, applied in the field of photoreceptors, can solve problems such as insufficient electrostatic characteristics
Inactive Publication Date: 2013-12-25
RICOH KK
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Abstract
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Problems solved by technology
[0007] Although the photoreceptor in JP-2010-164639-A mentioned above is somewhat successful, its electrostatic properties are insufficient
Method used
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Embodiment 1
[0135]An aluminum-made substrate (outer diameter: 60 mmφ) was coated with the following undercoat layer coating solution by the dipping method, followed by drying at 130° C. for 20 minutes to obtain an undercoat layer having a thickness of 3.5 μm.
[0136] The base coat coating solution contains:
[0137] 400 parts of titanium dioxide powder (Taibake CR-EL, manufactured by Ishihara Sangyo Kaisha, Ltd.),
[0138] 65 parts of melamine resin (Super Beckamine G821-60, manufactured by DIC Corporation),
[0139] 120 parts of alkyd resin (Beckolite M6401-50, manufactured by DIC Corporation), and
[0140] 400 parts of 2-butanone.
[0141] The formed undercoat layer was dip-coated with the following charge generating layer coating solution, followed by drying by heating at 90° C. for 20 minutes to form a charge generating layer having a thickness of 0.2 μm.
[0142] The charge generation layer coating solution contains:
[0143] 8 parts of titanyl phthalocyanine,
[0144] 5 parts ...
Embodiment 2
[0162] The photoreceptor of Example 2 was obtained by the same method as in Example 1, except that the charge transport layer coating solution was changed so as to contain Compound 1-6 illustrated in Tables 1 to 3 instead of Compound 1-1 illustrated, and Table 4 Compounds 2-6, illustrated in , replace compounds 2-3, illustrated.
Embodiment 3
[0164] The photoreceptor of Example 3 was obtained by the same method as in Example 1, except that the charge transport layer coating solution was changed so as to contain Compound 1-25 illustrated in Tables 1 to 3 instead of Compound 1-1 illustrated, and Table 4 Compound 2-7 illustrated in substituted for Compound 2-3 illustrated in , and further the surface layer coating solution was changed to the following coating solution.
[0165] The surface layer coating solution contains:
[0166] 3.0 parts of alumina (AA03, manufactured by Sumitomo Chemical Company, Limited),
[0167] 0.06 part of unsaturated polycarboxylic acid polymer (BYK-P104, manufactured by BYK Chemie Ltd.),
[0168] 5 parts of radically polymerizable monomer (trimethylolpropane acrylate) (KAYARAD TMPTA, manufactured by Nippon Kayaku Co., Ltd.),
[0169] 5 parts of radically polymerizable monomer (dipentaerythritol caprolactone-modified hexaacrylate) (KAYARAD DPCA-120, manufactured by Nippon Kayaku Co., Ltd.)...
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Abstract
The invention relates to a photoreceptor, an image forming apparatus, a process cartridge, and an image forming method. The photoreceptor includes an electroconductive substrate, and a laminate structure formed of at least a charge generating layer and a charge transport layer and provided overlying the electroconductive substrate, wherein the charge transport layer contains a charge transport material, a compound represented by the following formula 1 and a compound represented by the following formula 2: in the formula 1, R1 and R2 each independently represent substituted or non-substituted alkyl groups or aromatic hydrocarbon groups and one of R1 and R2 represents a substituted or non-substituted aromatic hydrocarbon group, R1 and R2 bonded to the same nitrogen atom may be bonded together to form a substituted or non-substituted nitrogen-containing heterocyclic group, and Ar represents a substituted or non-substituted hydrocarbon group; in the formula 2, R3 and R4 each independently represent substituted or non-substituted alkyl groups or aromatic hydrocarbon groups.
Description
technical field [0001] The present invention relates to a photoreceptor, an image forming apparatus, a process cartridge, and an image forming method. Background technique [0002] An image is formed by subjecting a latent electrostatic image bearing member (photoreceptor) to steps in an image forming apparatus, such as a charging step, an exposing step, a developing step, and a transferring step. At this time, corona products generated during the charging step and untransferred residual toner accumulate on the photoreceptor. So, after the transfer step, the photoreceptor undergoes a cleaning step to remove corona products and residues. [0003] For the cleaning step, a rubber scraper is usually used to press the photoreceptor to remove residues on the photoreceptor surface. However, since the frictional stress between the surface of the photoreceptor and the cleaning blade is high, the surface layers of the rubber blade and the photoreceptor are worn, resulting in a short...
Claims
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Application Information
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