JP2002365866A - Electrophotographic seamless belt and electrophotographic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrophotographic seamless belt having extremely uniform electric resistance and excellent surface property and mechanical characteristics. SOLUTION: In the electrophotographic seamless belt containing a thermoplastic fluorocarbon resin, the belt contains 3 to 40 parts by mass of polyether ester amides or polyether amides and 0.02 to 10 parts by mass of a surfactant containing fluorine atoms or halogenated alkaline metals to 100 parts by mass of the thermoplastic fluorocarbon resin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotographic seamless belt such as a belt-shaped photosensitive member, an intermediate transfer belt, a transfer conveyance belt, and a paper conveyance belt used in an electrophotographic apparatus.

[0002]

2. Description of the Related Art An electrophotographic seamless belt is, for example,
It is used for electrophotographic devices such as a belt-shaped photoreceptor, an intermediate transfer belt, a transfer conveyance belt, and a paper conveyance belt, which are parts of the electrophotographic device.

[0003] An electrophotographic seamless belt is generally one in which a resistance controlling agent is dispersed in a binder component such as resin, rubber, and elastomer to adjust electric resistance.
The method for adjusting the electric resistance is roughly classified into the following three types.

(1) A method of dispersing a conductive filler such as carbon black in a binder component (2) A method of dispersing a surfactant in a binder component (3) An ionic conductive polymer (polymer-type charged The method of (1) is a method of adjusting electric resistance which is currently mainstream in many fields, and has an advantage that electric resistance is hardly affected by temperature and humidity. It is very difficult to uniformly disperse the conductive filler in the components, and with electrophotographic seamless belts whose resistance has been adjusted in this way, image defects such as transfer omissions and leaks due to variations in the electrical resistance of the belt. May occur.

In the method (2), the surface resistivity is reduced, but the volume resistivity is hardly reduced. When the volume resistivity is adjusted, the amount of the surfactant added increases, and the bleeding on the belt surface occurs. There was a problem that it went out.

In the method (3), although there is little problem of variation in electric resistance and bleed-out of additives, the electric resistance does not decrease unless a certain amount of ionic conductive polymer is added. Compatibility is often a problem, especially when a fluorine-based resin is used as a binder component, the ion-conductive polymer is difficult to uniformly disperse in the fluorine-based resin, and the surface properties and mechanical properties of the obtained belt are insufficient. There was a case.

Further, when the above-described electrophotographic seamless belt is used as an intermediate transfer belt or a transfer conveyance belt in which toner is likely to adhere to the belt surface,
The releasability of the toner from the belt is still insufficient, and a so-called filming phenomenon in which the toner adheres to the belt surface may occur.

[0008]

Accordingly, the present inventors have proposed a new electrophotographic seamless belt different from the conventional one, which has solved the above-mentioned problems.

Accordingly, an object of the present invention is to provide an electrophotographic seamless belt having extremely uniform electric resistance and excellent surface properties and mechanical properties.

The inventors of the present invention have found that, in order to make the electric resistance uniform, an ion conductive agent using a polymer type antistatic agent is used rather than an electronic conductive system in which the electric resistance is adjusted by dispersing a conductive filler such as carbon black. That the conductive system is more advantageous,
Considering the use of a thermoplastic fluororesin as a binder component of an electrophotographic seamless belt in consideration of the releasability of the toner and the like, the present inventors have conducted intensive studies.

In general, a polymer type antistatic agent such as polyetheresteramide or polyetheramide exhibits an antistatic property (semiconductivity) by forming a streaky continuous phase in a binder resin. It has been considered that excessive dispersion of the high molecular weight antistatic agent causes a decrease in antistatic properties.

However, when an electrophotographic seamless belt is manufactured from the resin composition in which the polymeric antistatic agent is dispersed in a streak like this, the resulting electrophotographic seamless belt has poor surface properties and is incorporated into an electrophotographic apparatus. When the image was output with, the image tended to be bumpy. Further, when an electrophotographic seamless belt is formed by extrusion molding, there is a problem that the polymer type antistatic agent is oriented in a streak shape in the extrusion direction (axial direction of the belt), and the belt is easily torn from the end. I was Such tearing of the belt end was remarkable when a fluororesin was used as a binder component of the electrophotographic seamless belt.

Japanese Patent Publication No. 08-007505 describes a seamless belt containing a polyetheresteramide or a polyetheramide and a metal sulfonic acid salt in a thermoplastic resin. There is no description about the dispersibility of the inhibitor, the releasability of the toner) or the mechanical properties (tear resistance), and no consideration is given to them.

Therefore, the inventors of the present invention have proposed a method of dispersing a polyetheresteramide or polyetheramide, which is a high-molecular-weight antistatic agent, in a thermoplastic fluororesin uniformly and having an antistatic (semiconductive) property. As a result of intensive studies on the formulation that does not decrease, by blending a polyetheresteramide or polyetheramide in a fluororesin, and a fluorine atom-containing surfactant or an alkali metal halide, the electrical resistance is extremely uniform, and It has been found that a seamless belt satisfying the surface properties and mechanical properties can be obtained.

[0015]

That is, according to the present invention, in an electrophotographic seamless belt containing a thermoplastic fluororesin, 3 parts of polyetheresteramide or polyetheramide is added to 100 parts by mass of the thermoplastic fluororesin. An electrophotographic seamless belt comprising: 40 parts by mass and 0.02 to 10 parts by mass of a fluorine atom-containing surfactant or an alkali metal halide.

Further, the present invention is an electrophotographic apparatus comprising the above electrophotographic seamless belt.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, the dispersibility of a polyetheresteramide or a polyetheramide in a fluororesin is improved by blending a fluorine atom-containing surfactant or an alkali metal halide. Disperse evenly. This is presumably because the fluorine atom-containing surfactant and the alkali metal halide act as a dispersant for the polyetheresteramide or the polyetheramide. This is an effect that could not be obtained in -007505. The reason why the polyetheresteramide or the polyetheramide exhibits stable resistance controllability even though the polyetheresteramide or the polyetheramide is uniformly dispersed in the fluororesin is as follows. It is considered that a fluorine atom-containing surfactant or an alkali metal salt shows good ionic conductivity in the ether unit.

Another conventional technique is disclosed in Japanese Patent Application Laid-Open No.
JP-A-286521 describes an intermediate transfer member containing a fluorine atom-containing surfactant, but only mentions that a fluorine atom-containing surfactant is effective in preventing insect-eating images. The present invention is completely different from the present invention in which specific properties such as the above-mentioned present invention are found by using in combination with amide or polyetheramide.

In the present invention, the polyetheresteramide or polyetheramide is a thermoplastic fluororesin 1
When the amount is less than 3 parts by mass, the resistance control effect is small when the amount is less than 3 parts by mass, and when the amount is more than 40 parts by mass, the compatibility with the fluororesin is deteriorated, and when used as a belt, it tends to tear.

If the amount of the fluorine atom-containing surfactant or alkali metal halide is less than 0.02 parts by mass with respect to 100 parts by mass of the thermoplastic fluororesin, the polyetheresteramide or polyetheramide in the thermoplastic fluororesin is used. When the content exceeds 10 parts by mass, the surface properties of the obtained belt are reduced, and at the same time, the pressure resistance (dielectric breakdown resistance when a voltage is applied) is reduced. .

In the present invention, as the fluorine atom-containing surfactant, any of nonionic, cationic, anionic and both amphoteric and anionic can be used. For example, potassium perfluorobutanesulfonate,
Alkali metal salts of perfluoroalkylsulfonic acids such as lithium perfluorobutanesulfonate, potassium perfluorooctanesulfonate and lithium perfluorooctanesulfonate, potassium perfluorobutanecarboxylate, lithium perfluorobutanecarboxylate and perfluorooctane Potassium carboxylate, alkali metal salts of perfluoroalkyl carboxylic acids such as lithium perfluorooctane carboxylate and the like are mentioned, because the dispersibility of polyetheresteramide or polyetheramide in thermoplastic fluororesin can be significantly improved. And alkali metal salts of perfluoroalkylsulfonic acids. Here, if the amount of perfluoroalkylsulfonic acid is more than 3 parts by mass and not more than 10 parts by mass, the effect of preventing filming of the belt is increased, which is particularly preferable.

In the present invention, examples of the alkali metal halide include sodium fluoride, potassium chloride, lithium chloride and the like.

The tensile elastic modulus of the electrophotographic seamless belt is preferably from 500 MPa to 4000 MPa. When the tensile elasticity of the belt is less than 500 MPa, a trouble (color shift in a color electrophotographic apparatus) due to the expansion and contraction of the belt is apt to occur and 4000 MPa.
If it exceeds a, the durability of the belt may be poor due to poor flexibility. Measurement of tensile modulus is JISK-7
127.

As the thermoplastic fluororesin, a polyvinylidene fluoride resin is preferable because it has a molding temperature close to that of polyetheresteramide or polyetheramide and has excellent mechanical properties. Here, as the polyvinylidene fluoride resin, in addition to polyvinylidene fluoride, a vinylidene fluoride-hexafluoropropylene copolymer, a vinylidene fluoride-tetrafluoroethylene copolymer, a vinylidene fluoride-hexafluoropropylene-tetrafluoropolymer A vinylidene fluoride copolymer having vinylidene fluoride as a main constituent unit, such as an ethylene copolymer, can also be mentioned, and these may be used alone or in combination of two or more.

In the present invention, generally used plastic additives (antioxidants, lubricants, fillers, etc.) can be added as long as the properties are not affected.

Further, the electric resistance of the electrophotographic seamless belt is preferably not more than 1 × 10 ⁴ Omega least 1 × 10 ^{1 4} Omega, the maximum value of the electrical resistance of the minimum value of the electrical resistance 1
It is preferable that the electric resistance has a variation of less than 0 times because the uniformity of an image when an electrophotographic seamless belt is incorporated into an electrophotographic apparatus and an image is output is excellent.

As a method for producing an electrophotographic seamless belt, extrusion molding is preferable because the electrophotographic seamless belt can be continuously produced, so that the cost of the belt can be reduced.

In the present invention, as a method for dispersing a polyetheresteramide or polyetheramide and a fluorine atom-containing surfactant or an alkali metal halide in a thermoplastic fluororesin, known kneading,
Although a dispersing method can be used, dispersing by a twin-screw extruder is preferable because of high dispersing ability and productivity.

FIG. 1 is a schematic view showing an example of an image forming apparatus using an intermediate transfer belt which is one of electrophotographic seamless belts.

FIG. 1 shows a color image forming apparatus (copier or laser beam printer) using an electrophotographic process. The intermediate transfer belt 6 is made of a medium-resistance elastic body.

Reference numeral 1 denotes a rotating drum type electrophotographic photosensitive member that is repeatedly used as a first image carrier, and is driven to rotate at a predetermined peripheral speed (process speed) in a clockwise direction indicated by an arrow.

In the course of rotation, the electrophotographic photosensitive member 1 is uniformly charged to a predetermined polarity and potential by a primary charger 2, and then exposed to exposure means 3 (a color separation / imaging exposure optical system for a color original image, A first color component image of a target color image (e.g., a scanning exposure system using a laser scanner that outputs a laser beam that is modulated in accordance with a time-series electric digital pixel signal of image information). , A yellow component image).

Next, the electrostatic latent image is developed by a first developing unit (yellow developing unit 4Y) with yellow toner Y as a first color. At this time, the developing units of the second to fourth developing units (the magenta developing unit 4M, the cyan developing unit 4C, and the black developing unit 4K) are turned off and operate on the electrophotographic photosensitive member 1. The yellow toner image of the first color is not affected by the second to fourth developing units.

The intermediate transfer belt 6 is rotated clockwise at the same peripheral speed as the electrophotographic photosensitive member 1.

In the process in which the first color yellow toner image formed and carried on the electrophotographic photosensitive member 1 passes through the nip portion between the electrophotographic photosensitive member 1 and the intermediate transfer belt 6, the intermediate transfer belt 8 An intermediate transfer (primary transfer) is sequentially performed on the outer peripheral surface of the intermediate transfer belt 6 by an electric field formed by a primary transfer bias applied to the transfer belt 6.

After the transfer of the first color yellow toner image corresponding to the intermediate transfer belt 6, the surface of the electrophotographic photosensitive member 1 is cleaned by the photosensitive member cleaner 5.

Thereafter, similarly, the second color magenta toner image, the third color cyan toner image, and the fourth color black toner image are sequentially superimposed on the intermediate transfer belt 6 and transferred to correspond to the target color image. Thus, a combined color toner image is formed.

Reference numeral 9 denotes a secondary transfer roller, which corresponds to the secondary transfer opposing roller 12 and is supported in parallel with the intermediate transfer belt 6.
Are disposed on the lower surface of the device so as to be separated therefrom.

The primary transfer bias for the sequential superposition transfer of the first to fourth color toner images from the electrophotographic photosensitive member 1 to the intermediate transfer belt 6 has a polarity (+) opposite to that of the toner, and a primary transfer bias power source 10 Is applied. The applied voltage is in a range of, for example, +100 V to 2 kV.

In the primary transfer step of the first to third color toner images from the electrophotographic photosensitive member 1 to the intermediate transfer belt 6,
The secondary transfer roller 9 can be separated from the intermediate transfer belt 6.

The transfer of the composite color toner image transferred onto the intermediate transfer belt 6 to a transfer material 13 as a second image carrier is performed while the secondary transfer roller 9 is in contact with the intermediate transfer belt 6 and The transfer material 13 in the paper supply cassette 14 is fed from the paper supply roller 15 through the transfer material guide to the contact nip between the intermediate transfer belt 6 and the secondary transfer roller 9 at a predetermined timing. A voltage is applied to the secondary transfer roller 9 from a secondary transfer bias power supply 11. With this secondary transfer bias, the composite color toner image is transferred (secondary transfer) from the intermediate transfer belt 2 to the transfer material 13 as the second image carrier. Transfer material 13 to which the toner image has been transferred
Is introduced into the fixing device 16 and is fixed by heating.

After the image transfer to the transfer material 13 is completed, the intermediate transfer belt cleaner 7 is brought into contact with the intermediate transfer belt 6,
By applying a bias having a polarity opposite to that of the electrophotographic photosensitive member 1, the toner (transfer residual toner) remaining on the intermediate transfer belt 6 without being transferred to the transfer material 13 has a polarity opposite to that of the electrophotographic photosensitive member 1. Is given.

The transfer residual toner is electrostatically transferred to the electrophotographic photosensitive member 1 at the nip portion with the electrophotographic photosensitive member 1 and in the vicinity thereof, thereby cleaning the intermediate transfer member.

The method for measuring the resistance of the electrophotographic seamless belt according to the present invention will be described with reference to FIG.

An apparatus as shown in FIG. 2 is used as the resistance measuring apparatus. Electrophotographic seamless belt 200
Are a drive roller 201 (made of rubber having a JISA hardness of 60 ° and a diameter of 30 mm), an electrode roller 202 (aluminum, a diameter of 30 mm) and a tension roller 20.
4 (aluminum, diameter 20 mm, tension load 5
0N). In addition, the feeding roller 20
3 is in contact with the electrode roller 202 with a force of 20N, and the power supply roller 203 is a rubber roll having a sufficiently low resistance to the belt for measuring the resistance.
The hardness is 60 ° and the diameter is 30 mm.

The electrophotographic seamless belt 200 is driven by a driving roller 201 at a speed of 100 mm / s in a direction indicated by an arrow, and a high-voltage power supply HV (MODEL manufactured by Trek) is used.
L610C), a voltage of +100 V is applied to the feeding roller 203. Power supply roller 203 and electrode roller 20
2 and the signal output from the current output monitor terminal of the high voltage power supply HV to the recorder Rec. (Oscillographic recorder ORM120 manufactured by Yokogawa Electric Corporation
0), and the electric resistance of the electrophotographic seamless belt is obtained by calculating from the current and the applied voltage of 100 V. Here, the recorder Rec. Is set to 100 Hz, the electric resistance of one round of the belt is measured, and the average value of the electric resistance data of one round is defined as the electric resistance of the electrophotographic seamless belt.

The maximum value of the electric resistance (Rma) within one rotation of the belt
x) divided by the minimum value of the electrical resistance (Rmin)
/ Rmin is the variation in the electrical resistance of the electrophotographic seamless belt.

[0048]

The present invention will be described in detail below with reference to examples.

Example 1 A blend of a polyetheresteramide or a polyetheramide and a fluorine atom-containing surfactant or an alkali metal halide (hereinafter, simply referred to as a “blend”) was prepared using a polyvinylidene fluoride resin ( 100 parts by mass of KF polymer # 850 manufactured by Kureha Chemical Co., Ltd. 20 parts by mass of polyetheresteramide (Pelestat 6321 manufactured by Sanyo Kasei) Fluorine atom-containing surfactant (MegaFac F-110 (potassium perfluorooctanesulfonate manufactured by Dainippon Ink) )) 4 parts by mass, and the above composition was melt-kneaded at 210 ° C. using a twin-screw extruder to obtain an antistatic resin composition. The obtained antistatic resin composition is extruded to form a diameter of 140.
An electrophotographic seamless belt having a width of 250 mm and a width of 250 mm was produced. For the obtained belt, the following electrical property test,
An image output test and a mechanical property test were performed and evaluated. Table 1 shows the evaluation results.

<Electrical Characteristics Test> Measurement of Electric Resistance Value and Electric Resistance Variation A belt was attached to the resistance measuring device shown in FIG. 2, and the electric resistance value and the electric resistance variation of the electrophotographic seamless belt were measured. -Evaluation of pressure resistance A belt was attached to the resistance measuring device shown in Fig. 2, and a voltage of +2.0 kV was applied to the high voltage power supply HV. did.

<Image Output Test> Initial Image Evaluation The electrophotographic seamless belt produced as described above is shown in FIG.
"A" indicates that a full-color image is output by mounting as an intermediate transfer belt of the electrophotographic apparatus shown in (1) and a uniform image is obtained, and "A-" indicates a level that is slightly non-uniform but has no practical problem. The sample which was not uniform was designated as "B".・ Filming resistance evaluation A durability test was performed on 10,000 full-color sheets. A belt having no toner adhered to the belt surface (filming) was rated “A”, and a belt with toner adhered was rated “B”.

<Mechanical property test>-Tensile elastic modulus Circumferential direction of electrophotographic seamless belt (belt traveling direction)
A No. 3 dumbbell of JISK-7127 was prepared by pulling at a test speed of 5 mm / min.
It was determined by tensile stress and strain between 1%. Evaluation of tear resistance A cut of 5 mm in length was made in one end of the electrophotographic seamless belt produced as described above from the end of the belt using a cutter knife in the axial direction of the belt, and a belt idling test shown in FIG. "A" with a cut length of less than 10 mm after 10,000 rotations
Those with a diameter of less than 5 mm were regarded as "A-", and those with a tear of 15 mm or more were regarded as "B", and "A" and "A-" were judged to be practical.

In FIG. 3, the electrophotographic seamless belt 3
Reference numeral 00 denotes a driving roller 301 (made of rubber having a JISA hardness of 60 ° and a diameter of 30 mm), a driven roller 302 (made of aluminum, a diameter of 30 mm), and a tension roller 3.
03 (made of aluminum, diameter 20 mm, tension load 50 N), the electrophotographic seamless belt 300 is driven by a driving roller 301 at a speed of 100 mm / s in an arrow direction.

Example 2 An electrophotographic seamless belt was produced in the same manner as in Example 1 except that the composition was changed as follows, and various characteristics evaluation tests were performed. Table 1 shows the evaluation results. 100 parts by mass of polyvinylidene fluoride resin (KF polymer # 850 manufactured by Kureha Chemical Co., Ltd.) 6 parts by mass of polyetheresteramide (Pelestat 6321 manufactured by Sanyo Chemical Industries) 0.5 parts by mass of sodium fluoride (Example 3) Compounded in Example 1. An electrophotographic seamless belt was produced in the same manner as in Example 1 except that the product was changed as follows, and various property evaluation tests were performed. Table 1 shows the evaluation results. 100 parts by mass of polyvinylidene fluoride resin (KF polymer # 850 manufactured by Kureha Chemical Co., Ltd.) 20 parts by mass of polyetheresteramide (Pelestat 6321 manufactured by Sanyo Kasei) Fluorine atom-containing surfactant (K manufactured by Tochem Products Co., Ltd.)
FBS) 8 parts by mass (Example 4) An electrophotographic seamless belt was produced in the same manner as in Example 1 except that the composition was changed as follows, and various property evaluation tests were performed. Table 1 shows the evaluation results. 100 parts by mass of polyvinylidene fluoride resin (KF polymer # 850 manufactured by Kureha Chemical Co., Ltd.) 40 parts by mass of polyetheresteramide (Perestat 3170 manufactured by Sanyo Chemical Co., Ltd.) 0.1 part by mass of sodium fluoride (Comparative Example 1) 100 parts by mass (Panelite K-1300CM manufactured by Teijin Chemicals Limited) conductive carbon black (DENKA BLACK manufactured by Asahi Denka Co., Ltd.)
14 parts by mass Fluorine atom-containing surfactant (Megafac F-110 manufactured by Dainippon Ink and Chemicals Co., Ltd.) 2 parts by mass, and the above composition was melt-kneaded at 280 ° C. using a twin-screw extruder to obtain an antistatic resin composition. I got something. The obtained antistatic resin composition is extruded to form a diameter 140
An electrophotographic seamless belt having a width of 250 mm and a width of 250 mm was produced. The obtained belt was subjected to various characteristic evaluation tests in the same manner as in Example 1. Table 1 shows the evaluation results.

Comparative Example 2 An electrophotographic seamless belt was produced in the same manner as in Example 1 except that the composition was changed as follows, and various characteristics evaluation tests were performed. Table 1 shows the evaluation results. 100 parts by mass of polyvinylidene fluoride resin (KF polymer # 850 manufactured by Kureha Chemical Co., Ltd.) 30 parts by mass of polyetheresteramide (Pelestat 6321 manufactured by Sanyo Chemical Co., Ltd.) 2 parts by mass of sodium dodecylbenzenesulfonate (Comparative Example 3) Compounded in Example 1. An electrophotographic seamless belt was produced in the same manner as in Example 1 except that the product was changed as follows, and various property evaluation tests were performed. Table 1 shows the evaluation results. 100 parts by mass of polyvinylidene fluoride resin (KF polymer # 850 manufactured by Kureha Chemical Co., Ltd.) 20 parts by mass of polyetheresteramide (Pelestat 6321 manufactured by Sanyo Chemical Co., Ltd.) Fluorine atom-containing surfactant (Megafac F-110 manufactured by Dainippon Ink Co., Ltd.) 11 Parts by mass (Comparative Example 4) An electrophotographic seamless belt was produced in the same manner as in Example 1 except that the composition was changed as follows, and various property evaluation tests were performed. Table 1 shows the evaluation results. 100 parts by mass of polyvinylidene fluoride resin (KF polymer # 850 manufactured by Kureha Chemical Co., Ltd.) 45 parts by mass of polyetheresteramide (Pelestat 2450 manufactured by Sanyo Chemical Co., Ltd.) Fluorine atom-containing surfactant (MegaFac F-110 manufactured by Dainippon Ink Co., Ltd.) 3 Parts by mass

[0056]

[Table 1]

[0057]

As described above, according to the present invention,
An electrophotographic seamless belt having extremely uniform electric resistance and excellent surface properties and mechanical properties can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing an example of the configuration of a color electrophotographic apparatus using an electrophotographic process applied to the present invention.

FIG. 2 is a schematic sectional view of a resistance measuring device used in the present invention.

FIG. 3 is a schematic sectional view of a belt idle rotation tester used in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electrophotographic photoreceptor 2 Primary charger 3 Exposure means 4Y Yellow developing device 4M Magenta developing device 4C Cyan developing device 4K Black developing device 5 Photoconductor cleaner 6 Intermediate transfer belt 7 Intermediate transfer belt cleaner 8 Primary transfer roller 9 Secondary transfer roller 10 Primary transfer bias power supply 11 Secondary transfer bias power supply 12 Secondary transfer opposed roller 13 Transfer material 14 Paper feed cassette 15 Paper feed roller 16 Fixer 201 Drive roller 202 Electrode roller 203 Power supply roller 204 Tension roller HV High voltage power supply Rec. Recorder 300 electrophotographic seamless belt 301 drive roller 302 driven roller 303 tension roller

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G03G 15/16 G03G 15/16 21/00 350 21/00 350 // (C08L 27/12 C08L 77:12 77:12) (72) Inventor Tsunetori Ashibe 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Atsushi Tanaka 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon stock In-house (72) Inventor Hidekazu Matsuda 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Akira Shimada 3-30-2 Shimomaruko, Ota-ku, Tokyo F-term in Canon Inc. (Reference) 2H035 CA05 CB06 2H071 BA42 DA09 DA16 DA23 EA18 2H200 GA34 GA47 GA49 GB22 HA02 HA28 HB12 JA02 JC03 JC12 JC15 JC16 JC17 LA24 LB02 LB03 LB09 LB13 LB18 LC03 LC10 MA04 MA11 MA12 MA17 MB06 MC03 NA02 4F071 AA26 AA57 AB15 AC14 AE10 AF16 AF20 AF36 AH12 BB06 BC01 4J002 BD141 BD151 BD161 CL072 CL082 DD036 DD056 EG026 EV256 FD316 GM01

Claims (12)

[Claims] 1. An electrophotographic seamless belt containing a thermoplastic fluororesin, wherein said thermoplastic fluororesin
3 to 40 parts by mass of a polyetheresteramide or polyetheramide, and 0.02 parts by mass of a fluorine atom-containing surfactant or an alkali metal halide with respect to 0 parts by mass.
An electrophotographic seamless belt containing from 10 to 10 parts by mass. 2. The electrophotographic seamless belt according to claim 1, wherein the thermoplastic fluororesin is a polyvinylidene fluoride resin. 3. The method according to claim 1, wherein the alkali metal halide is 0.02 or less.
The electrophotographic seamless belt according to claim 1, comprising 10 to 10 parts by mass. 4. The method according to claim 1, wherein the fluorine-containing surfactant is used in an amount of 0.0
The electrophotographic seamless belt according to claim 1, which contains 2 to 10 parts by mass. 5. The electrophotographic seamless belt according to claim 4, wherein the fluorine atom-containing surfactant is an alkali metal salt of perfluoroalkylsulfonic acid. 6. The electrophotographic seamless belt according to claim 5, wherein the alkali metal salt of the perfluoroalkylsulfonic acid is more than 3 parts by mass and 10 parts by mass or less based on 100 parts by mass of the thermoplastic fluororesin. 7. A tensile modulus of at least 500 MPa and 40.
The electrophotographic seamless belt according to any one of claims 1 to 6, which has a pressure of 00 MPa or less. 8. An electric resistance value of 1 × 10 ⁴ Ω or more and 1 × 10 ⁴ or more.
The electrophotographic seamless belt according to any one of claims 1 to 7, which has a resistance of ¹⁴ Ω or less. 9. The semiconductor device according to claim 8, wherein the maximum value of the electrical resistance is less than 10 times the minimum value of the electrical resistance.
The electrophotographic seamless belt according to 1. 10. The electrophotographic seamless belt according to claim 1, which is a belt formed by extrusion molding. 11. An intermediate transfer belt according to claim 1.
The electrophotographic seamless belt according to any one of the above. 12. An electrophotographic apparatus comprising the electrophotographic seamless belt according to any one of claims 1 to 11.