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Method of manufacturing electrophotographic seamless belt and electrophotographic apparatus

一种电子照相、环形带的技术，应用在应用电荷图形的电记录工艺的设备、应用电荷图形的电记录工艺、腰带等方向，能够解决形成膜厚没有不均匀、无接头环形带困难等问题

Inactive Publication Date: 2009-01-28
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, according to the conventional stretch blow molding method, it is very difficult to form an electrophotographic endless belt without unevenness in film thickness

Method used

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  • Method of manufacturing electrophotographic seamless belt and electrophotographic apparatus
  • Method of manufacturing electrophotographic seamless belt and electrophotographic apparatus
  • Method of manufacturing electrophotographic seamless belt and electrophotographic apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0156] [Preform Mold]

[0157] preparation Figure 12 There is a preform mold capable of forming a shape of a preform (104), the external diameter "a" of the preform is 38.4 mm, and the length c of the longitudinal stretch portion of the preform is 96 mm.

[0158] [Blow Mold]

[0159] preparation Figure 12 A blow mold (200) with a middle inner diameter b of 142 mm and a longitudinal stretch d of 288 mm.

[0160] That is to say, the radial stretch ratio (b / a) of the preform in this embodiment is 3.7, and its longitudinal stretch ratio d / c is 3.0, by multiplying the radial stretch ratio and the longitudinal stretch ratio The overall draw ratio obtained was 11.1.

[0161] [Preparation of thermoplastic resin mixture]

[0162] Polyethylene Naphthalate resin 81%

[0163] (TN-8065S: manufactured by Teijin Chemicals Ltd.)

[0164] Ion Conductive Resin 17%

[0165] (IRGASTAT P18: manufactured by Ciba Specialty Chemicals Co., Ltd.)

[0166] Potassium Perfluorobutanesulfonate 2...

Embodiment 2

[0195] [Preform molds and blow molds]

[0196] preparation Figure 12 There is a preforming mold capable of forming a shape of a preform (104), the external diameter "a" of the preform is 33.8 mm, and the length c of the longitudinal stretching part of the preform is 92 mm. The same blow mold as that used in Example 1 was prepared.

[0197] That is to say, the radial stretch ratio (b / a) of the preform in this example becomes 4.2, and its longitudinal stretch ratio d / c is 3.0, and the radial stretch ratio is compared with the longitudinal stretch ratio. Multiply to obtain an overall stretch ratio of 12.6.

[0198] [Preparation of thermoplastic resin mixture]

[0199] Polyethylene naphthalate resin 78%

[0200] (TN-8065S: manufactured by Teijin Chemicals Ltd.)

[0201] Polyetherester resin 19%

[0202] (4047X08: Manufactured by Du Pont-Toray Co., Ltd.)

[0203] Potassium PFBS 3%

[0204] (manufactured by Mitsubishi Materials Corporation)

[0205] The above materials are...

Embodiment 3

[0210] [Preform Mold]

[0211] preparation Figure 12 There is a preforming mold capable of forming a shape of a preform (104), the external diameter "a" of the preform is 63.5 mm, and the length c of the longitudinal stretching part of the preform is 120 mm.

[0212] [Blow Mold]

[0213] preparation Figure 12 A blow mold (200) having a middle inner diameter b of 216 mm and a longitudinal stretch d of 288 mm.

[0214] That is to say, in this embodiment, the radial stretch ratio (b / a) of the preform is 3.4, and its longitudinal stretch ratio d / c is 2.4. The overall stretch ratio obtained by multiplying is 8.2.

[0215] [Manufacture and evaluation of electrophotographic endless belt]

[0216] The molding raw material 2 used in Example 2 was passed through at a heating temperature of 280°C 50 uniaxial T-die extrusion equipment extruded to form a sheet with a thickness of 150 μm. The obtained sheet was subjected to a thermal tensile test based on JIS K7161 at intervals of...

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Abstract

The purpose of the invention is to provide a method that an electrophotography seamless belt having a uniform thickness is manufactured. The other purpose is to provide an electrophotography device of electrophotography seamless belt produced by the said method. The invention refers to a method for manufacturing electrophotography seamless belt. The method for manufacturing an electrophotography seamless belt comprises: (i) a step of attaching a cylindrical perform made of a thermoplastic resin mixture, and having an outside diameter 'a' to a mold having a cylindrical cavity having an inside diameter 'b'; and draw-blowing the perform at a drawing temperature T1 to form a draw-blowing molded item . In addition, (ii) a step of cutting the draw blowing molded item to produce a seamless belt. A parameter S / P of thermoplastic resin mixture is determined from the tensile stress-strain curve drawn by subjecting a sheet-like test piece to a heat tensile test conforming to JIS K7161. The parameter S / P is 2.0 to 15.0 at temperature T2; and the drawing temperature T1 is set the same with the temperature T2. In the parameter S / P, P is the stress of when the draw ratio of the test piece corresponds to 0.6(b / a)'. If the draw ratio is one when the strain is zero, and S is the stress of when the draw ratio of the test piece corresponds to 1.6(b / a) when the value of 'b / a' is no less than 1.7.

Description

technical field [0001] The present invention relates to a method of manufacturing an endless belt for an image forming apparatus employing electrophotography, which is called an electrophotographic apparatus, such as a copying machine or a color printer, that is, the present invention relates to manufacturing an electrophotographic endless belt. The method of jointing the endless belt. Furthermore, the present invention also relates to an electrophotographic apparatus including the electrophotographic endless belt obtained by the manufacturing method. Background technique [0002] An electrophotographic apparatus using an electrophotographic endless endless belt such as an intermediate transfer belt or a transfer material conveyor belt can be used as a color electrophotographic apparatus that sequentially superimposes and transfers a plurality of component colors corresponding to color image information to output a composite An image forming product that reproduces a color ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/16B29C49/08B29L29/00
CPCG03G15/1685B29C49/48B29C2793/009B29D29/00B29C2035/0822B29C2049/4894B29C49/16B29C35/045B29K2995/0005B29L2029/00B29C49/06B29C49/12B29C35/0805B29C2035/0811B29C2949/0715B29C2049/7862
Inventor 柏原良太小林广行芦边恒德
Owner CANON KK
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