Electrophotographic endless belt, electrophotographic apparatus, and electrophotographic endless belt manufacturing method
A technology of electrophotography and endless belt, which is applied to the equipment of the electric recording process using the charge pattern, the electric recording process using the charge pattern, and the electric recording technique, etc., and can solve the problems of uneven expansion, low uniformity, and low Stability and other issues, to achieve high-level transfer uniformity, high transfer uniformity, and high operational stability
Inactive Publication Date: 2007-11-21
CANON KK
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Problems solved by technology
The smaller the thickness of the molded body, the easier it is to produce uneven thickness and surface depressions caused by uneven expansion of the preform
In addition, there may be a difference in circumference between the right-hand and left-hand openings of the electrophotographic endless belt due to non-uniform expansion of the preform
[0007] When an electrophotographic endless belt exhibiting thickness unevenness and surface depressions and a large difference in circumference between right-hand and left-hand side openings is used as an intermediate transfer belt or a transfer material conveyor belt, since the electrophotographic Low uniformity and low stability during transfer of splice ring belts, resulting in defects such as color drift in the output image
Method used
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[0031] As described above, the electrophotographic endless belt of the present invention is an electrophotographic endless belt formed of a thermoplastic resin composition. In the present invention, "thermoplastic resin composition" refers to a resin composition exhibiting thermoplasticity. Therefore, if, for example, a material is a resin composition composed of a mixture of thermoplastic resin and thermoplastic resin powder, as long as the material as a whole exhibits thermoplasticity, the material is considered to be a "thermoplastic resin composition" as referred to in the present invention. ".
[0032] Examples of the thermoplastic resin used in the present invention include the following. These substances may be used alone or in combination of two or more.
[0033] Examples of thermoplastic resins include: polyolefin (polyethylene, polypropylene, or the like), polystyrene, acrylic resin, ABS resin, polyester (PET, PBT, PEN, PAR, or the like), polycarbonate, Sulfur-con...
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The object of the present invention is to provide an electrophotographic endless belt exhibiting high uniformity in transfer and high stability in running, and an electrophotographic apparatus having the electrophotographic endless belt. The present invention provides: an electrophotographic endless belt formed of a thermoplastic resin composition, characterized in that, assuming that the maximum heating shrinkage factor when a slice of the electrophotographic endless belt is hot-pressed in a temperature range higher than a melting point of the thermoplastic resin composition by 10 DEG C to 120 DEG C is L (%), 15 = L = 80 is established, and assuming that the maximum tensile rupture distortion attained by performing a heating tensile test using a slice hot-pressed at a temperature giving the maximum heating shrinkage factor in a temperature range of 80 DEG C to 200 DEG C is S, 0.10 = (S + 1) / L = 0.17 is established; an electrophotographic apparatus having the electrophotographic endless belt; and a method of manufacturing the electrophotographic endless belt.
Description
technical field [0001] The present invention relates to an electrophotographic endless belt such as an intermediate transfer belt or a transfer material conveying belt used in an electrophotographic apparatus, an electrophotographic apparatus having an electrophotographic endless belt, and an electrophotographic endless belt The method of manufacture of the belt. Background technique [0002] An electrophotographic apparatus using an electrophotographic endless belt (also referred to as an electrophotographic seamless belt) such as an intermediate transfer belt or a transfer material conveyor belt is an efficient color electrophotographic apparatus in which a plurality of component color images are sequentially superimposed one on the other and transferred to output a color image (multicolor image). [0003] Examples of manufacturing methods of the electrophotographic endless belt include tube extrusion molding, inflation molding, centrifugal molding, blow molding, and inje...
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IPC IPC(8): G03G15/16
CPCG03G15/1685G03G15/1625
Inventor 柏原良太芦边恒德
Owner CANON KK