CN1826561A

CN1826561A - Endless belt for image-forming apparatuses, and image-forming apparatus

Info

Publication number: CN1826561A
Application number: CN 200480021157
Authority: CN
Inventors: 森越诚; 大津纪宏; 山冈克史; 水本和也
Original assignee: Yuka Denshi Co Ltd; Mitsubishi Kasei Corp
Current assignee: Yuka Denshi Co.,Ltd.; Mitsubishi Chemical Corp; Mitsubishi Rayon Co Ltd
Priority date: 2003-07-25
Filing date: 2004-07-23
Publication date: 2006-08-30
Anticipated expiration: 2024-07-23
Also published as: CN100444042C

Abstract

An endless belt for image forming devices is disclosed. The endless belt is produced by molding a compound comprising a thermoplastic elastomer, a thermoplastic resin, and a conductive material, and satisfies formulae (1), (2), (3) shown below. An image forming device using this endless belt is also disclosed. [FORMULAE 1] SR(100V)/SR(500V)<VR(100V)/VR(250) (1) SR(100V)/SR(500V)<= 30 (2) 8<=VR(100V)/VR(250V)<= 100 (3) (In the formulae, SR(100V) is the surface resistivity measured by applying 100-V voltage for 10 seconds, SR(500V) is the surface resistivity measured by applying 500-V voltage for 10 seconds, VR(100V) is the volume resistivity measured by applying 100-V voltage for 10 seconds, and VR(250V) is the volume resistivity measured by applying 250-V voltage for 10 seconds.) This belt is inexpensive and excellent in elasticity, chemical resistance, dimensional stability, electric resistance, and external environment stability of these characteristics. Further, the belt leads to high quality of image and has long durability.

Description

Image processing system is with endless belt and image processing system

Technical field

The present invention relates to a kind of image processing system with endless belt and image processing system, in detail, (annular) for no reason image processing system that relates to physical properties excellent such as compact dimensions stability, resistance to bend(ing) is with endless belt and image processing system with this endless belt.Endless belt of the present invention is suitable as image processing systems such as the intermediate transfer belt that uses in electro photography duplicating machine, laser printer, LED printer, facsimile recorder etc., conveying transfer belt, photoreceptor belt, photographic fixing bands with band.

Background technology

In the past, as image processing systems such as OA instruments, designed and gone on the market and used the electrofax mode of photoreceptor and toner.In these devices, no matter have or not seam, all use photoreceptor belt, intermediate transfer belt, conveying transfer belt, transfer printing separating belt, charged pipe, development sleeve, photographic fixing with controlling resistances such as band, toner transfer belt so that it has the endless belt of electric conductivity, semiconduction or insulativity.

For example, the formation of intermediate transfer device is: the temporary transient toner image that forms on the intermediate transfer body makes toner be transferred on the paper etc. then, and, on the top layer of intermediate transfer body,, use the endless belt that forms by seamless band in order to carry out charged to toner or to remove electricity.This endless belt is set machine to every kind of machine for and is had different surface resistances or thickness direction resistance (below, be called " volume resistance "), and manufactures electric conductivity, semiconduction or insulativity.

In addition, carry the formation of transfer device to be: paper temporarily to be remained on carry on the transfer article, and will be transferred to from the toner of photoreceptor on the paper that remains on the conveying transfer article, then, by removing electricity by carrying transfer article that paper is moved away from, carrying the transfer article top layer, in order to carry out to paper or remove electricity, used having seam or seamless endless belt charged.This endless belt has different surface resistances or volume resistance with the machine that above-mentioned intermediate transfer belt is set for equally to every kind of machine, and is modulated into electric conductivity, semiconduction or insulativity.

; the electric conductivity endless belt of using in the image processing systems such as electro photography duplicating machine, printer; owing to be to drive for a long time under high voltage with high-tension on the function, therefore, require to have permanance sufficient machinery, electricity by the roller more than 2 or 2.

Particularly, be used in the occasion of the intermediate transfer belt in the intermediate transfer device etc., owing to form the image that produces by toner on tape and be transferred on the paper, in driving,, all can become the reason of image shift (ズレ) if belt sag, extend or crawl.Therefore, as intermediate transfer belt, require high dimensional accuracy (the few and thickness homogeneous of the girth difference of the Width of band), high resiliency modulus (modulus of elasticity in direct stress height of band circumferencial direction), high resistance to bend(ing) (being difficult to occur fracture) excellent.

In addition, in recent years, the competition of the image processing system of the ink-jetting style of electro photography image processing system such as color laser printer or color LED printer and low price is fierce more.Therefore, the electro photography image processing system is with differential as target with ink-jetting style in the high speed printing technology, carries transfer printing, intermediate transfer mode and the image processing system that prints at high speed becomes commercialized by the tandem type of 4 photoreceptors arranged side by side.Therefore, image processing system is used the endless belt, require the performance that improves permanance more and better prevent image shift.

In the past, for the endless belt, the improvement by its raw material had obtained certain achievement for above-mentioned requirements.

; recently; not only to high speed printing; and it is also surging to the requirement of the raising of picture element; particularly; differential for ink-jet printer, obtain the image of high picture element under the environment of the temperature humidity of wide model scope, not only on the special paper at colour printer, even and at good quality paper, recycled writing paper, single face paper (Li Paper), such various of ohp film also can obtain the high picture element particular importance that becomes on paper.Therefore, as toner, the exploitation of polymerization toner is also developed, and the uneven few toner of the small particle diameter of particle diameter 4～6 μ m and granularity becomes commercialized.On the other hand, for corresponding above-mentioned requirements, the improvement of the character of surface of transfer belt, chemical characteristic, electrical characteristics is required also to improve day by day.

Particularly, be used in the occasion of the transfer belt in intermediate transfer device etc., since be with electrostatic force with the toner transfer printing (primary transfer) on the photoreceptor on direct transfer belt, and after having synthesized coloured image on the transfer belt, by electrostatic force with toner transfer printing (secondary transfer printing) to paper, therefore, not only the raising of the such resistance characteristic of the surface resistance of transfer belt and volume resistance characteristic is important, but also is necessary improved surface physical characteristics, surface chemistry etc.

By above explanation, image processing systems such as transfer belt are in recent years used the endless belt, the character of (1)～(8) below requiring.

(1) have the surface resistivity and the specific insulation of regulation at semiconductor regions, and resistance is uneven few;

(2) has the toner release property;

(3) thin thickness and homogeneous;

(4) physical strength strong (being difficult to stretch, be difficult to break);

(5) variation of the resistance value that is caused by environment (temperature humidity), size, physical strength is little;

(6) low cost;

(7) be seamless and be the circle (the girth difference of the Width of band is little) band;

(8) can both carry out the printing of high picture element to the kind of various paper.

And, as the endless belt, mainly use in the resin raw material of thermoset resin or thermoplastic resin electroconductive stuffings such as cooperating carbon black or conductive metal filler and the endless belt of moulding or cooperate the ionic conductivity material and the endless belt of moulding.For example, known to polyamide, polyimide, Kynoar, ethylene-tetrafluoroethylene copolymer, polycarbonate, be added on acetylene carbon black in the resin combinations such as polyester, furnace black, add the ionic conductivity material in carbon black such as channel black or the insulativity macromolecular compound and adjusted the compound of resistivity, with the mixture forming that obtains is the resistivity (surface resistivity with regulation that the band shape of tens～hundreds of μ m left and right thickness obtains, specific insulation) resin system band, and with this resin system band as intermediate transfer body and function band or have both that paper is carried and the conveying transfer printing of toner transfer printing with band use (patent documentation 1～4).

In addition, also proposed to have used the endless belt (patent documentation 5～9) of above-mentioned flexibility raw materials such as thermoplastic elastic body in addition as resin raw material.

In addition, as the method for making of endless belt, enumerated following method.

(a) rotoforming (perhaps, the situation that shows as centrifugal casting being arranged also):

This method of forming comprises: the inner peripheral surface at the cylindrical metal mould adds the resin that is dissolved in the solution, the limit makes metal die rotation limit apply temperature, make solvent evaporates half or over half after, take out the operation of solid drawn tube from the inside of metal die and solid drawn tube be installed and applied the operation that temperature is carried out the heat curing reaction in the outside of other cylindrical metal mould.This method mainly is applicable to the making (patent documentation 10) of polyimide system transfer belt.

(b) extrusion moulding:

This method of forming is that the resin that will mix electroconductive stuffing melt extrudes method circlewise.This method mainly is applicable to the making of ethylene-tetrafluoroethylene copolymer, Kynoar, polycarbonate-based, polyesters, polyimide transfer belt.

(c) infusion process:

This method of forming is by dip coated etc. resin solution to be coated with into certain thickness in the outside of cylindric or cylindric metal die, after the heating film forming, extracts the method for the tubular film of film forming out from metal die.This method mainly is applicable to the making of vinylidene system transfer belt.

(d) rubber extrusion forming method:

This method of forming is that urethane rubber is extruded into tubular, after the sulfuration, carries out surface grinding, again in the method (non-patent literature 1) of the fluororesin-coated grade of superficies.

In the resene endless belt, with thermoplastic resin as principal ingredient carry out continuously shapedly easily, particularly,, the extrusion molding (patent documentation 11) of thermoplastic resin system endless belt has been proposed from the viewpoint of cost degradation., just in resin raw material, add the endless belt of conductive agent,, for example, when using, have the such problem of crackle that in use takes place easily as intermediate transfer belt because resistance to bend(ing) is poor.

In order to address this problem a little, proposed to cooperate polyalkylene terephthalates such as polybutylene terephthalate and polycarbonate to carry out the resin system endless belt (patent documentation 12) of alloying., owing to still there is the problem that crackle takes place easily, therefore, the end for reinforcing band is necessary the reinforcing band etc. of fitting, its result, the problem that exists cost to uprise.

In addition, as resin alloy alloyage class band, the alloy type band of combination polyarylate and polyester, polyalkylene terephthalates and polyamide, polycarbonate and polyamide, polysulfones or polyethersulfone and various engineering plastics such as polyester or polyphenylene sulfide has been proposed.

, resistance to bend(ing) is poor originally for these resene alloy materials.And, if there is the resistance to bend(ing) problem of variation more in conductive materials such as interpolation carbon.In addition, when extrusion molding,, must at high temperature add hot-extrudable owing to be to have stable on heating engineering plastics.Its result, exist conductive material self to worsen or the decomposition reaction of promotion and resin or since decomposition gas remain in and the band outward appearance worsened or owing to the decomposition of resene alloy material causes the extremely such problem of deterioration of resistance to bend(ing).

In addition, these resene bands because any its modulus of elasticity in direct stress is high and hard, from photoreceptor when transfer belt is carried out the transfer printing (primary transfer) of toner, can not obtain sufficient transfer area (being also referred to as transfer printing folder district (ニ Star プ)).Therefore, the transfer printing that toner takes place easily is bad, and produces the toner residual packing on the sensitization side and fixing phenomenon.Its result, toner can not be transferred on the transfer belt from photoreceptor fully, exists in the problem that the toner transfer efficiency of primary transfer portion extremely reduces.

In addition, as mentioned above, when having used the high and hard band of the modulus of elasticity in direct stress, in the secondary transfer printing operation, the toner layer of holding with harder transfer roll and hard strap clamp is applied strong pressure.Its result causes that at the toner layer of literal center section pressure concentrates, and the toner layer of literal center section is condensed destruction, produces the problem of fully transfer printing of toner (so-called literal deinking).In addition, because band is hard, for the big paper of concave-convex surfaces such as recycled writing paper, the problem of the transfer printing of toner can not be fully carried out in existence.

In order to improve the toner transferring properties of such resene band, the endless belt (patent documentation 5) that is made of flexibility raw materials such as rubber has been proposed.

, rubber system band is subjected to the tensile force of circumferencial direction elongation easily owing to too soft, has the problem of generation image shift.In order to address this problem, imbed the material that fabric etc. is difficult to stretch in the inside of band, at this moment, must make the thickness thickening of band, existence can not obtain the problem of the thickness of homogeneous.

In addition, in rubber, contain the low molecular adjuvants that ooze out easily such as vulcanizing agent or plastifier, also have the problem of polluting photoreceptor.In addition, owing to be batch production, the problem that existence can not cost degradation, and, be difficult to homogeneous control because the problem in the resistivity in semiconduction zone that electroconductive stuffing causes cooperates ionic conductive agent usually in order to solve.Thus, produce the problem that changes 2～3 orders of magnitude of resistance change that make band owing to temperature humidity.

On the other hand, proposed to use thermoplastic elastomer to replace the band of rubber or thermoplastic elastomer and thermoplastic resin have been carried out the band (patent documentation 6～9,14) of alloying.

Thermoplastic resin and thermoplastic elastomer are being carried out in the band (patent documentation 6,7) of alloying, because the bad dispersibility of thermoplastic resin and thermoplastic elastomer, carbon condenses easily, therefore, has that resistance value is big to the dependence of voltage, the big tendency of inequality change of resistivity.In addition, there is the voltage-dependent of resistivity or, under all service conditions, all can not obtains the problem of high-precision picture element because the change in resistance that temperature humidity causes also becomes greatly.In addition, in the time of in being installed to image processing system,, also there is the problem of endless belt bleeder resistance owing to apply high voltage.

Thermoplastic resin and low-melting thermoplastic elastomer are carried out the band (patent documentation 8) of alloying, owing to, have the problem that image shift takes place by using low-melting thermoplastic elastomer to make band elongation easily.In addition, because poor, there is the problem that worsens easily to the transfer efficiency of the toner of the secondary transfer printing portion of paper from band at the release property of the toner of the soft chain segment (ソ Off トセグメ Application ト) of thermoplastic elastomer part.In addition, when adopting extruding forming method, because the flexibility height, the endless belt is difficult to become proper circle, and existence must be heat-treated the problem of operation afterwards that waits.In addition, because crystallised component is few, drug resistance is poor, also exists because the influence of the silicone oil that produces from fixing member etc. etc. and rotten problem.

Laminated tape by the thermoplastic resin that obtained by extrusion molding and thermoplastic elastomer has reduced elongation and has had the band (patent documentation 9) of flexibility concurrently, because the confusion of the flow characteristics of the various molten resins during moulding is brought influence to the resistance of mutual layer, therefore, the problem that has charged resistance inequality.In addition, because the top layer is thermoplastic elastomer, crystallised component is few, and drug resistance is poor, exists because the influence of the silicone oil that is subjected to produce from fixing member etc. etc. and rotten problem.

Patent documentation 1: the spy opens clear 63-311267 communique

Patent documentation 2: the spy opens flat 5-170946 communique

Patent documentation 3: the spy opens flat 6-228335 communique

Patent documentation 4: the spy opens flat 3-89357 communique

Patent documentation 5: the spy opens flat 9-54506 communique

Patent documentation 6: the spy opens flat 8-99374 communique

Patent documentation 7: the spy opens flat 10-6411 communique

Patent documentation 8: the spy opens the 2000-62993 communique

Patent documentation 9: the spy opens the 2001-13802 communique

Patent documentation 10: the spy opens clear 60-170862 communique

Patent documentation 11: the spy opens flat 3-89357 communique

Patent documentation 12: the spy opens flat 4-313757 communique

Patent documentation 13: the spy opens flat 6-149083 communique

Patent documentation 14: the spy opens the 2003-29537 communique

Non-patent literature 1: electrofax association can will 33 (1) 43 (1994)

Summary of the invention

The problem that invention will solve

That is, there is following problems in former band.

(1) there is generation crackle easily in resin system band, in addition, causes the problem of destroying the literal deinking that causes owing to the cohesion of toner easily.

(2) in addition, also there is the pollution problems that causes photoreceptor of oozing out owing to crosslinking chemical, plastifier etc. in the problem that there is the cost height in rubber system band, the change in resistance that causes owing to temperature humidity is big etc.

(3) there is big etc. the problem of the voltage-dependent of toner release property, dimensional accuracy, resistance in thermoplastic elastic system band.In addition, also exist in the image processing system, when band stopped, the part that hangs over the bending on the roller was adhered to " crooked fine wrinkle " easily, and caused the problem of image disorder owing to the crooked fine wrinkle that produces.

As mentioned above, in the former endless belt, still not existing and have both high picture element, high durableization, high dimensional accuracy and endless belt raw material cheaply, nearly all is that the temperature humidity condition of image processing system is restricted or there is the endless belt of restriction in printing.

The present invention makes in view of such truth, and its purpose is to provide the image processing system of restriction of temperature humidity conditioned disjunction printing that has both high picture element, high durableization, high dimensional accuracy, do not have an image processing system cheaply with the endless belt and used the image processing system of this image processing system with the endless belt.

In addition, the present invention also aims to provide the environmental stability excellence of resistance to bend(ing), drug resistance, the fine wrinkle of anti-roller tack, dimensional stability, resistance and these characteristics, and cheap and can high picture element, the image processing system of high-durability uses the endless belt.

Solve the measure of problem

Present inventors are in the process of studying to achieve these goals and repeatedly, at first, as being the raw material of purpose with the cost degradation, from can extrusion molding also obtaining this point of flexibility, used thermoplastic elastomer, in addition, be conceived to the modulus of elasticity in direct stress and the disperse state of surfaceness and surface wettability and conductive material, image measurement has been carried out on the environmental factor dependence of limit research resistance and the voltage dependency characteristic limit of resistance repeatedly.

Can obtain following discovery from its result: by using specific thermoplastic elastomer, have conductive material that the specific modulus of elasticity in direct stress and rough surface characteristic and surface wettability and resistance has a voltage-dependent and be in the endless belt of disperse state, the toner transfer efficiency of primary transfer portion and the toner transfer efficiency of secondary transfer printing portion are improved, and such endless belt becomes and is difficult to adhere to fine wrinkle.In addition, also find by using specific conductive material, even under the temperature humidity environment of wide model scope, also can form stable image.And, use such complex also by the endless belt of specific method of forming moulding, can realize high-durability, high dimensional accuracyization and cost degradations such as high picture elementization, high-temperature humidity environment stability.

The present invention is based on above-mentioned discovery and finishes, its the 1st main points are that a kind of image processing system uses the endless belt, this endless belt is the complex of molded thermoplastic elastic body and thermoplastic resin and conductive material and the image processing system that forms is used the endless belt, it is characterized in that, satisfy following formula (1), (2) and (3).

[several 1]

SR(100V)/SR(500V)＜VR(100V)/VR(250) (1)

SR(100V)/SR(500V)≤30 (2)

8≤VR(100V)/VR(250V)≤100 (3)

In the formula, SR (100V) expression apply 10 second 100V voltage and the surface resistivity measured, SR (500V) expression apply 10 second 500V voltage and the surface resistivity measured, VR (100V) expression apply 10 second 100V the specific insulation of voltage when measuring, VR (250V) expression apply 10 second 250V the specific insulation of voltage when measuring.

In addition, the 2nd main points of the present invention are that a kind of image processing system uses the endless belt, and this endless belt is the potpourri of molded thermoplastic elastic body and thermoplastic resin and conductive material and the image processing system that forms is used the endless belt, it is characterized in that,

With respect to total amount 100 weight portions of thermoplastic elastomer and thermoplastic resin, containing the melt flow rate value (190 ℃, 2.16kgf loading) that 0.01～20 weight portion measures according to JIS K7210 is the sticky polymers that 0.01～10g/10 divides, and,

With respect to total amount 100 weight portions of thermoplastic elastomer and thermoplastic resin, the amount of conductive material is 0.1～30 weight portion.

In addition, the 3rd main points of the present invention are that a kind of image processing system uses the endless belt, and this endless belt is that moulding contains the complex of the thermoplastic polymer composition of thermoplastic elastomer and conductive material and the image processing system that forms is used the endless belt, it is characterized in that,

Thermoplastic elastomer comprises the polyester-polyester segmented copolymer that the soft chain segment by the hard segment of aromatic polyester and aliphatic polyester constitutes, and the amount of the thermoplastic elastomer in the thermoplastic polymer composition is 10 weight % or more than the 10 weight %, with respect to thermoplastic polymer composition 100 weight portions, the amount of conductive material is 1～20 weight portion, and

The surface resistivity of measuring under the voltage of 100V is 1 * 10 ⁶～1 * 10 ¹⁴Ω/, specific insulation are 1 * 10 ⁶～1 * 10 ¹³Ω cm, the inequality of each resistivity is maximum/minimum≤100.

In addition, the 4th main points of the present invention are that a kind of image processing system uses the endless belt, it is characterized in that, satisfy following formula (1), (2) and (3).

[several 2]

SR(100V)/SR(500V)＜VR(100V)/VR(250) (1)

SR(100V)/SR(500V)≤30 (2)

8≤VR(100V)/VR(250V)≤100 (3)

The effect of invention

According to the present invention, can provide the external environment condition excellent in stability of resistance to bend(ing), drug resistance, anti-fine wrinkle tack, dimensional stability, resistance and these characteristics, and the cheap and image processing system that can obtain high picture element, high durableization is with band and used this image processing system with the image processing system of being with.In addition, according to the present invention, control is by carrying out the modulus of elasticity in direct stress that alloying obtains with thermoplastic resin and thermoplastic elastomer on one side, cooperate carbon black and sticky polymers (tackifier) to carry out the control of resistivity on one side, thus, can provide the voltage-dependent of resistivity little, because the variation of the resistivity that the temperature humidity environment causes is little, resistance to bend(ing) or drug resistance and compact dimensions excellent in stability, and under all environment of low temperature and low humidity～hot and humid, use the endless belt for all image processing systems that can obtain high picture element, and used the image processing system of this image processing system with the endless belt with paper from concavo-convex big paper to level and smooth paper.

Description of drawings

[Fig. 1] is the side view that the evaluation usefulness intermediate transfer belt in embodiment and the comparative example is shown.

[Fig. 2] is the key diagram of intermediate transfer device.

[Fig. 3] is the side view that the evaluation method of the fine wrinkle of anti-roller tack is shown.

[Fig. 4] is the curve map that applies voltage-dependent that the surface resistivity in embodiment and the comparative example is shown.

[Fig. 5] is the curve map that applies voltage-dependent that the specific insulation in embodiment and the comparative example is shown.

[Fig. 6] is the curve map that the fine wrinkle of anti-roller tack (roller fine wrinkle recovery rate) in embodiment and the comparative example is shown.

Symbol description

1 photosensitive drums

2 charged devices

3 exposure optical systems

4 developers

5 clearers

6 electric conductivity endless belts

7,8,9 conveying rollers

20 endless belts

21 outer reinforcing bands

Reinforcing band in 22

The 23 guiding rubber that prevent to crawl

30 rollers

31 test portions

The preferred plan that carries out an invention

Below, explain the present invention.Before explanation of the present invention, use Fig. 2 that the intermediate transfer device that the endless belt has been installed is described.Fig. 2 is the key diagram of intermediate transfer device.

As shown in Figure 2, around photosensitive drums (1), having disposed by charged device (2), with the semiconductor laser is the exposure optical system (3) of light source, the electrophotographic process unit of taking in the developer (4) of toner and being used to remove clearer (5) formation of residual toner.Electric conductivity endless belt (6) is erected on the conveying roller (7,8,9), moves along the direction of arrow with the same step of the photosensitive drums of rotating along direction of arrow ground.

Then, run action is described.At first, will be similarly charged by charged device along the surface of the photosensitive drums (1) of direction of arrow rotation.Then, will be formed on the photosensitive drums (1) corresponding to the electrostatic latent image of the image that obtains by not shown image read-out etc. by optical system (3).Electrostatic latent image becomes toner image with developer (4) video picture.By static printing machine (10) this toner image is electrostatically transferred on the electric conductivity endless belt (6), between conveying roller (9) and compression roller (12), is transferred on the recording chart (11).

Then, endless belt of the present invention is described.

(1) material of endless belt

Endless belt of the present invention is made of the thermoplastic polymer composition that contains thermoplastic elastomer and thermoplastic resin and conductive material.In addition, in the present invention, as long as the modulus of elasticity in direct stress, surface wettability, resistance to bend(ing) satisfy certain scope basically, then without limits to the kind of material.And the thermoplastic polymer composition can also optionally cooperate thermoplastic resin etc. in thermoplastic elastomer, that is, and and can be with known thermoplastic elastomer and thermoplastic resin as principal ingredient.And, electroconductive stuffing or the material that show electric conductivity such as ionic conductivity material of endless belt of the present invention by cooperating necessary amount, the electric conductivity that can obtain wishing.

(A) thermoplastic elastomer

As the thermoplastic elastomer that the present invention uses, can use thermoplastic elastomers such as polyesters, polyamide-based, polyethers, polyolefins, polyurethanes, polyvinyl chloride-base etc.

Preferred 190～220 ℃ of the crystalline melt point of thermoplastic elastomer is with the preferred 10g/10 branch of the melt flow rate (MFR) of JIS K7210 (240 ℃, the 2.16kgf loading) instrumentation～18g/10 branch.Used the easy moulding of band of the thermoplastic elastomer of such characteristic.

Thermoplastic elastomer has the fracture-resistant that significantly improves the endless belt, and gives the speciality of flexibility.

When carrying out alloying with thermoplastic resin described later, by using the thermoplastic elastomer high that has common functional group etc. with thermoplastic resin with the thermoplastic resin compatibility, the alloy dispersiveness of thermoplastic resin and thermoplastic elastomer becomes good, can improve anti-breaking property tremendously and adjust the modulus of elasticity in direct stress, the surface smoothing excellence, open and, the dispersiveness of conductive materials such as carbon black is also excellent.

Therefore, as thermoplastic resin, when using polyester such as polybutylene terephthalate, polyethylene terephthalate and/or polycarbonate, preferably use the thermoplastic elastomer of polyesters or polyethers.In addition, when amide-type thermoplastic resins such as use nylon, preferably use polyamide-based thermoplastic elastomer.

Can use as polyester elastomer, hard component uses aromatic polyester, soft component to use the polyester polyether block copolymer of aliphatic polyether and hard component to use aromatic polyester, soft component to use the pet copolyester segmented copolymer of aliphatic polyester.

Can enumerate following segmented copolymer as polyester polyether block copolymer, pet copolyester segmented copolymer.

＜polyester polyether block copolymer 〉

The polyester polyether block copolymer be make with (a) carbon number be 2～12 aliphatics and/or ester ring type glycol and (b) aromatic diacid or its Arrcostab and (c) weight-average molecular weight be that 400～6000 polyalkylene ether glycols is a raw material, the material of the oligomer polycondensation that obtains by esterification or ester exchange reaction.

As (a) carbon number is 2～12 aliphatics and/or ester ring type glycol, can enumerate ethylene glycol, propylene glycol, trimethylene, 1,4-butylene glycol, 1,4-cyclohexanediol, 1,4-cyclohexanedimethanol etc.Wherein, preferred 1,4-butylene glycol and ethylene glycol.These can 1 kinds or use as the potpourri more than 2 kinds or 2 kinds.

As (b) aromatic dicarboxylic acid, can enumerate terephthalic acid (TPA), m-phthalic acid, 2,6-naphthalenedicarboxylic acid etc.Wherein, preferred terephthalic acid (TPA) or 2,6-naphthalenedicarboxylic acid.These can 1 kinds or use as the potpourri more than 2 kinds or 2 kinds.In addition, as the Arrcostab of aromatic dicarboxylic acid, can enumerate dimethyl terephthalate (DMT), dimethyl isophthalate, repefral, 2, dimethyl esters such as 6-naphthalene diformic acid dimethyl ester, wherein, preferred dimethyl terephthalate (DMT) and 2,6-naphthalene diformic acid dimethyl ester.These can 1 kinds or use as the potpourri more than 2 kinds or 2 kinds.In addition, except that above-mentioned, can also use a small amount of 3 officials can glycol, other glycol, other dicarboxylic acid and the aliphatic dicarboxylic acid of ester, hexane diacid etc. or ester ring type dicarboxylic acid and Arrcostab thereof etc. as copolymer composition.

So-called (c) polyalkylene ether glycols, can enumerate polyglycol, poly-(1,2 or 1,3-propylidene ether) block of the block of glycol, polytetramethylene ether diol, polyhexamethylene ether glycol, oxirane and epoxypropane or random copolymers, oxirane and tetrahydrofuran or random copolymers etc.Particularly, preferred polytetramethylene ether diol.The weight-average molecular weight of polyalkylene ether glycols is generally 400～6000, and preferred 500～4000.The use level of polyalkylene ether glycols is generally 5～95 weight %, preferred 10～85 weight % with respect to the segmented copolymer that generates.

＜pet copolyester segmented copolymer 〉

As the polyester polyether block copolymer, be make with above-mentioned (a) carbon number be 2～12 aliphatics and/or ester ring type glycol and above-mentioned (b) aromatic dicarboxylic acid or its Arrcostab and (d) aliphatics or ester ring type dicarboxylic acid and aliphatic diol condensation polyester oligomer and (e) be raw material by aliphatics lactone or the synthetic polyester oligomer of aliphat single-alcohol carboxylic acid, the material of the oligomer polycondensation that obtains by esterification or ester exchange reaction.

As (d) polyester oligomer, can enumerate 1,4-cyclohexane cyclohexanedimethanodibasic, 1,2-cyclohexane cyclohexanedimethanodibasic, dicyclohexyl-4, the polyester oligomer of the structure of one or more condensations of glycol such as one or more of aliphatic dicarboxylic acid such as ester ring type diacid such as 4 '-dioctyl phthalate or succinic acid, ethane diacid, hexane diacid, decanedioic acid and ethylene glycol, propylene glycol, tetramethylene glycol, pentamethylene glycol.

As (e) polyester oligomer, can enumerate by synthetic polycaprolactone kind polyester oligomer such as 6-caprolactone, ω-hydroxycaproic acid.

As the thermoplastic elastomer beyond the above-mentioned polyesters, can enumerate polystyrene-type thermoplastic elastomers, Polyvinylchloride analog thermoplastic elastomer, olefin hydrocarbons thermoplasticity elastic body, polyesters thermoplastic elastomer, polyamide-based thermoplastic elastomer and polyurethanes thermoplastic elastomer.

Particularly, as polystyrene-type thermoplastic elastomers, can use Styrene-Butadiene, styrene-isoprene multipolymer, styrene-ethylene-butylene-styrene multipolymer, styrene-ethylene-propylene-styrene multipolymer etc., as the Polyvinylchloride analog thermoplastic elastomer, can use crosslinked (three-dimensional) vinyl chloride-linear chloro ethene polymers etc.

In addition, as olefin hydrocarbons thermoplasticity elastic body, can use tygon-EPDM multipolymer, polypropylene-EPDM multipolymer, tygon-EPM multipolymer, polypropylene-EPM multipolymer etc., as the polyesters thermoplastic elastomer, can use PBT (1,4-butadiene glycol-terephthalic acid (TPA) condensation product)-PTMEGT (polytetramethylene glycol-terephthalic acid (TPA) condensation product) multipolymer etc.

As polyamide-based thermoplastic elastomer, can enumerate with nylon oligomer-dicarboxylic acid-polyether oligomers is the multipolymer of basic framework, as the nylon oligomer, can use nylon 6, nylon 66, NYLON610, nylon 612, nylon 11, nylon 12 etc., as polyether oligomers, can use PTMEG, polypropylene glycol, polytetramethylene glycol etc.

In addition, as the polyurethanes thermoplastic elastomer, can use the many alcohol copolymers of polyurethane-polycarbonate, polyurethane-polyether polyol multipolymer, polyurethane-polycaprolactone polyesters multipolymer, polyurethane-adipate polyester multipolymer.

(B) thermoplastic resin

When thermoplastic resin and thermoplastic elastomer carry out alloying, as thermoplastic resin, preferably have common functional group etc. with thermoplastic elastomer, and the thermoplastic resin high with the thermoplastic elastomer compatibility.Thus, the alloy dispersiveness of thermoplastic resin and thermoplastic elastomer becomes well, can improve anti-breaking property tremendously and adjust the modulus of elasticity in direct stress, and can obtain the dispersiveness of conductive materials such as excellent surface smoothing, carbon black.

As the thermoplastic resin that use endless belt of the present invention, can enumerate crystalline resin and non-crystalline resin.Particularly, can enumerate polypropylene, PEF (high density, middle density, low-density, straight chain shape low-density), propylene and ethylene block or random copolymers, the ethylene, propylene copolymer rubber, the ethene butadiene rubber, rubber or latex such as styrene butadiene styrene segmented copolymer or its hydroderivating thing, polybutadiene, polyisobutylene, polyamide, polyamidoimide, polyacetal, polyarylate, polycarbonate, polymethylmethacrylate, polybutylene terephthalate, polyethylene terephthalate, PEN, polyimide, liquid crystalline polyester, polysulfones, polyphenylene sulfide, poly-bisamide triazole, polyetherimide, polyetheretherketone, acryloyl, Kynoar, polyvinyl fluoride, chlorotrifluoroethylene, ethylene-tetrafluoroethylene copolymer, hexafluoropropylene, the perfluoroalkyl vinyl ether multipolymer, alkyl acrylate copolymer, the polyester ester copolymer, polyetherester copolymer, polyether amide copolymer, polyurethane copolymer etc.These can 1 kinds or use as the potpourri more than 2 kinds or 2 kinds.

In the above-mentioned thermoplastic resin, preferred crystalline resin.As crystalline resin, be at least a kind resin with hydroxyl, carboxylic acid group and ester bond, crystallinity so long as more than 20% or 20% but less than 90% then be not particularly limited, can use resin commonly used.

In the thermoplasticity crystalline resin, particularly, preferred PAT (polyalkylene terephthalates) is more preferably PBT (polybutylene terephthalate), PET (polyethylene terephthalate), PEN (PEN).PBT is because crystallization speed is fast, with low uncertainty according to the crystallization degree of condition of molding, and usually, the crystallization degree is stable in 30% front and back, and is therefore, preferred especially.

In addition, the crystalline resin that the present invention uses significantly not damaging in the scope of effect of the present invention, can also import copolymer composition.Particularly, can enumerate with the ester bond is main chain, has imported the resin of ester bonds such as polymethylene glycol etc.

The common weight-average molecular weight of molecular weight of the thermoplasticity crystalline resin that use endless belt of the present invention is 10000～100000.When having the requiring of high mechanical properties such as tension failure elongation, require high molecular, particularly, more than preferred 20000 or 20000, be more preferably more than 25000 or 25000, more than preferred especially 30000 or 30000.

In thermoplastic resin, as non-crystalline resin, preferably have at least a kind resin of hydroxyl, carboxylic acid group and ester bond, crystallinity so long as more than 0% or 0% but less than 10% then be not particularly limited, can use resin commonly used.

Particularly, can enumerate PC (polycarbonate), PAr polyester such as (polyarylates), PMMA (polymethylmethacrylate) etc. and have the resin of ester bond at side chain as preferred example.Wherein, preferred polyester can especially preferably use PC.

In addition, in the non-crystalline resin that in endless belt of the present invention, uses,, can import copolymer composition significantly not damaging in the scope of effect of the present invention.As concrete example, can enumerate with ester bond as main chain, imported the resin of ester bonds such as polymethylene glycol etc.

The molecular weight of the non-crystalline resin that use endless belt of the present invention is not particularly limited, and being generally weight-average molecular weight is 10000～100000.When having the requiring of high mechanical properties such as tension failure elongation, preferred high molecular particularly, more than preferred 20000 or 20000, is more preferably more than 25000 or 25000, more than preferred especially 30000 or 30000.

The weight ratio of＜thermoplastic resin and thermoplastic elastomer 〉

Thermoplastic resin that uses in the moulding material to endless belt of the present invention and the blending ratio of thermoplastic elastomer (weight ratio) are not particularly limited.Usually, in thermoplastic resin, crystalline resin resistance to chemical reagents and resistance to bend(ing) excellence, non-crystalline resin compact dimensions excellent in stability.Therefore, preferably corresponding to the ratio of application target setting with thermoplastic elastomer.For example, the blending ratio of thermoplastic resin/thermoplastic elastomer (weight ratio) is generally 1/99～99/1, and is preferred 5/95～95/5, is more preferably 10/90～90/10, preferred especially 70/30～30/70, the most preferred 60/40～40/60.

If thermoplastic elastomer is more than above-mentioned scope, that is, thermoplastic resin is with and was become soft after a little while, and when applying belt tension, because the band elongation, the toner image disorder is not so be preferred.On the contrary, at thermoplastic elastomer after a little while, that is, thermoplastic resin is with and is become really up to the mark for a long time, is easy to generate crackle, and the fine wrinkle feature that becomes simultaneously and enclose roller easily is not so be preferred.

The differences in viscosity of＜thermoplastic resin and thermoplastic elastomer 〉

If the differences in viscosity of thermoplastic resin and thermoplastic elastomer is excessive, can not obtain good dispersion even adjust to create conditions, can not reach the dispersion of homogeneous sometimes, therefore, the preferred viscosities difference is little.Particularly, the ratio of the MFR value that obtains when thermoplastic resin and thermoplastic elastomer are measured MFR under identical conditions is preferred 1/20～20/1, is more preferably 1/10～10/1.

In addition, as the assay method of MFR,, measure the condition that the temperature conditions selection approaches thermoplastic resin composition's processing temperature according to JIS K-7210 benchmark.For example, when selecting PBT and polyester elastomer, set as 240 ℃ of conducts of processing temperature and measure temperature, the differences in viscosity of comparative heat plastic resin and thermoplastic elastomer.In addition, as loading, for example, select 2.16kg.

(C) conductive material:

As conductive material, get final product so long as satisfy the material of the desired performance of purposes, be not particularly limited, can use various materials.Particularly, as electroconductive stuffing, can enumerate carbon class filler, metal species electroconductive stuffing, metal oxide-type electroconductive stuffings etc. such as carbon black, carbon fiber, graphite.Except that electroconductive stuffing, can also enumerate the ionic conductivity material, for example, quaternary ammonium salt etc.In these conductive materials, because the tendency that the use of carbon black has the humidity dependence of the resistivity of making to reduce, so preferred.Carbon black can also use simultaneously with the ionic conductivity material.

As carbon black, preferred DBP oil absorption is generally 50～300cm ³/ 100g, specific surface area is generally 35～500m ²/ g, volatile content is generally 0～20%, and average primary particle diameter is generally the carbon black of 20～50nm.

1) for the DBP oil absorption of carbon black:

The DBP oil absorption is big more, and the easy more formation of carbon connects into miniliform chain (carbon structure), has the advantage that is difficult to produce the carbon condensed matter and owing to just show electric conductivity easily with few addition, so also have advantage cheaply., in the process from the compounding ingredient to the processing and forming, owing to be applied to various shearing forces on the resin combination that has cooperated carbon black, it is destroyed and make the uneven and unstable so easily problem of resistivity to be easy to generate carbochain.On the other hand, if the DBP oil absorption is very few, owing to be difficult to form carbochain, producing the carbon that is used to show electric conductivity, to add quantitative change many, the problem points of the resistance to bend(ing) of infringement material.Therefore, the preferred 50～300cm of DBP oil absorption of carbon black ³/ 100g is more preferably 80～240cm ³/ 100g.

2) for the particle diameter and the specific surface area of carbon black:

Because specific surface area is big more, can show electric conductivity with few interpolation weight more, sees it is favourable from being difficult to destroy this point of physical strength.,,, need ± 0.05% with interior quality of fit in order to control in semiconductor regions owing to make electric conductivity tendency jumpy according to the addition of carbon, the resistance deviation that makes the endless belt equably for ± 1 order of magnitude with interior be difficult.In addition, the carbon black that specific surface area is big is because particle diameter is little usually, and when making it to be distributed in the resin, carbon black particle becomes and condenses easily.Its result, the carbon black condensed matter mixes and is present in the moulding product, produces electricity in the place of carbon condensed matter and concentrates, and the insulation breakdown of part takes place easily.In addition, during the specific surface area of carbon black too small (carbon particle is excessive), owing to be difficult to form the carbon condensed matter, the outward appearance of moulding product is unsmooth, and by the contact between carbon particle, about electric conductivity is expressed and is subjected to easily, thereby resistivity is uneven easily.Therefore, the preferred average primary particle diameter of carbon black is 20～50nm, and preferred specific surface area is 35～500m ²/ g.

3) for the volatile content of carbon black

The volatile content of carbon black is many more, according to its character of surface, and the favorable dispersibility of carbon., owing to when adding hot milling, produce gas, be disadvantageous in moulding.On the other hand, the volatile content of carbon black is few more, owing to when adding hot milling, be difficult to produce gas, and good forming ability, but there is carbon to disperse the tendency that worsens.Therefore, preferred 0～20 weight % of the volatile content of carbon black.

Carbon black is not particularly limited its kind so long as satisfy the material of above-mentioned DBP oil absorption, specific surface area, volatile matter, average primary particle diameter and get final product, and in addition, the carbon black of use can be the potpourri more than a kind or 2 kinds or 2 kinds.

For example, as the kind of carbon black, can enumerate acetylene black, furnace black, channel black etc.Wherein, preferably few and be difficult to take place the acetylene black of the bad order that causes owing to the carbon cohesion as the functional group of impurity.In addition, can also use the carbon black that has coated resin, the carbon black of heat treated, the carbon black of graphitization processing, the carbon black of acidic treatment etc. to implement the carbon black of known postprocessing working procedures.

In addition, for the generation that improves dispersiveness and suppress gas, can also use the carbon black of handling with coupling agents such as silanes, aluminium esters of gallic acid, titanate ester and zirconate classes.

In the present invention, the content of the carbon black in the endless belt (below, be also referred to as " carbon black concentration " sometimes), on resistance value few this aspect of dependent influence to temperature humidity, the formula (4) below preferably satisfying and (5).

[several 3]

LogY≥-X+20 (4)

LogY≤-X+30 (5)

In the formula, X represents the content (weight %) of the carbon black in the endless belt, and Y represents the endless belt is applied the 100V voltage in 10 seconds and the surface resistivity (Ω) measured.

For example, consider that surface resistivity is 1 * 10 for this point with low uncertainty of the resistivity of the environmental change from hot and humid to low temperature and low humidity ⁶The occasion of endless belt (Ω), preferred 14～24 weight % of carbon black concentration, surface resistivity is 1 * 10 ¹⁰The occasion of endless belt (Ω), preferred 10～20 weight % of carbon black concentration, surface resistivity is 1 * 10 ¹⁴The occasion of endless belt (Ω), preferred 6～16 weight % of carbon black concentration.

Particularly, be more preferably X and Y and satisfy following formula (6) and (7).

[several 4]

LogY≥-X+21 (6)

LogY≤-X+29 (7)

If the carbon black concentration in the endless belt is too high, owing to the generation of the decomposition gas of carbon black etc. itself worsens the outward appearance of goods, simultaneously because the reaction of carbon black and resin makes the resin decomposition, generation comes from the damage of foaming, therefore, is not preferred in appearance, in addition, folding resistance also worsens.

If the carbon black concentration in the endless belt is low excessively, be difficult to show electric conductivity, the disperse state of carbon black worsens simultaneously, and it is uneven easily that resistivity becomes.In addition, contact resistance is big, become be subjected to environment about, when in image processing system, installing, sometimes owing to image abnormity takes place environment as the endless belt.

(D) polymerization catalyst:

As the method for the alloying of thermoplastic resin and thermoplastic elastomer, while can use just method that thermoplastic resin and thermoplastic elastomer are mixed, mix these method, in the presence of catalyzer, make these react the known alloying process such as method that mix from polymerization stage.Particularly, from the viewpoint of cost, preferably use polymerization catalyst to heat the method for mixing.As long as polymerization catalyst has the ability with thermoplastic resin and thermoplastic elastomer polymerization, then be not particularly limited.

In polymerization catalyst, preferred Ti birdss of the same feather flock together and catalyzer, particularly, can preferably use alkyl titanate esters etc.

In the alkyl titanate esters, preferred tetrabutyl titanate ester or four (2-ethylhexyl) orthotitanate.These can easily obtain from the commercially available product as TYZOR TOT (DuPont manufacturing) or TYZOR TBT (DuPont manufacturing).

Ti class polymerization catalyst is because by playing a role effectively with compound that contains alkaline metal, alkaline-earth metal or the compound combination that contains zinc, so preferably, wherein, be more preferably the polymerization catalyst of the compound that contains magnesium.

Compound as containing magnesium is not particularly limited, and preferred organic acid magnesium salts is more preferably magnesium acetate.

If the content of polymerization catalyst is very few, can not work effectively sometimes, therefore, preferably up to a certain degree content.Particularly, the quality of the metal ingredient in the polymerization catalyst, with respect to whole thermoplastic polymer compositions (total amount of thermoplastic resin and thermoplastic elastomer), preferred 1ppm or more than the 1ppm, be more preferably 10ppm or more than the 10ppm, preferred especially 20ppm or more than the 20ppm.On the other hand, known esters resin causes depolymerization sometimes in the presence of plurality of heavy metal, therefore, and preferred few content to a certain degree.Particularly, the quality of the metal ingredient in the polymerization catalyst, with respect to whole thermoplastic polymer compositions (total amount of thermoplastic resin and thermoplastic elastomer), preferred 10000ppm or below the 10000ppm, be more preferably 1000ppm or below the 1000ppm, preferred especially 500ppm or below the 500ppm.In addition, will be called " Ti concentration ", " Mg concentration " with respect to the part by weight of Ti, the Mg of the polymerization catalyst of whole thermoplastic polymer compositions sometimes below.

(E) sequestrant

If the hyperactivity of polymerization catalyst exists the mechanical properties that the molecular weight reduction is caused owing to the depolymerization that promotes the thermoplastic polymer composition to reduce, be accompanied by the problems such as foaming of the generation of low molecular weight substance.Therefore, the sequestrant that the metal in the polymerization catalyst is had a sequestering power is existed and suppress depolymerization.

Kind as sequestrant is not particularly limited, and can use known sequestrant.For example, phosphite ester, phosphate, phosphate, hydrazine class.Particularly, as phosphite ester, can enumerate " イ Le ガホス 168 (trade names) " (Japanese チバガイギ one (strain) made), " PEP36 (trade name) " (rising sun electrochemical industry (strain) manufacturing), " サ Application De ス Block P-EPQ (trade name) " (Network ラリア Application トジヤパ Application (strain) manufacturing), as the hydrazine class, can enumerate " IRGANOXMD1024 (trade name) " (Japanese チバガイギ one (strain) made), " CDA-6 (trade name) " (rising sun electrochemical industry (strain) manufacturing).

In the present invention, suppress the generation of depolymerization and low molecular weight substance, can not add sequestrant by equalization by condition of molding., the addition of the sequestrant in the time of must suppressing depolymerization, with respect to whole thermoplastic polymer composition 100 weight portions, preferred 0.001 weight portion or more than 0.001 weight portion is more preferably 0.1 weight portion or more than 0.1 weight portion.

If the amount of sequestrant is too much, owing to the polymerization catalyst loss of activity, can not obtain the endless belt of good rerum natura sometimes, therefore, must not add too much.For example, the higher limit of the amount of sequestrant is with respect to whole thermoplastic polymer composition 100 weight portions, and preferred 10 weight portions are more preferably 5 weight portions.

Usually, the amount of sequestrant is with respect to whole thermoplastic polymer composition 100 weight portions, a small amount of interpolation that preferred 0.1 weight portion or 0.1 weight portion are following.; example as the preferred using method of the sequestrant among the present invention; the preferred nearly addition of the polymerization catalyst of 50～500ppm that adds; also preferably use preferred 0.1～3 weight portion of sequestrant; be more preferably the such ratio of 0.3～1 weight portion high amount usually; in addition; if will be used to obtain the condition of molding (temperature of endless belt; hold-up time etc.) carry out equalization; promoted the chemical bond of thermoplastic resin and thermoplastic elastomer to generate and the molecular weight increase; and can suppress depolymerization, thereby the endless belt of unexistent physical properties excellent before can obtaining.

(F) sticky polymers (tackifier)

Sticky polymers (tackifier) can be brought into play the effect that voltage-dependent becomes littler that applies of the surface resistivity that makes the endless belt.Promptly, used the endless belt of the complex of the thermoplastic resin/thermoplastic elastomer/conductive material that does not add sticky polymers (tackifier) fully, exist the voltage-dependent that applies of surface resistivity to become big tendency, therefore, can not obtain high-precision picture element sometimes.As its reason, can think since for the differences in viscosity that makes full-bodied thermoplastic resin and low viscous thermoplastic elastomer big, when low viscous thermoplastic elastomer is mixing, do not have to mix with other composition fully, and make the bad dispersibility of each composition in the endless belt.Therefore, in the present invention, the viscosity all for the mixed system that makes thermoplastic resin/thermoplastic elastomer/conductive material increases, even contain the low viscous thermoplastic elastomer of a great deal of, also can become the viscosity that to disperse each composition fully, preferably cooperate sticky polymers (tackifier).

The sticky polymers that uses among the present invention (tackifier) is to show by the MFR value (190 ℃, the 2.16kgf loading) that JIS K7210 measures to be generally 0.01～10g/10 branch, and preferred 0.05～5g/10 branch is more preferably the polymkeric substance of the MFR value of 0.1～3g/10 branch.The occasion that the MFR value is not enough 0.01g/10 divides, viscosity is too high and can not be mixing, surpasses the 10g/10 timesharing, and the viscosity of tackifier is low excessively, can not obtain the tackify effect fully.

As the sticky polymers (tackifier) that the present invention uses, can enumerate and contain the polymkeric substance that glytidyl methacrylate etc. contains epoxide group.Because epoxide group is reactive high, takes place because the macromolecule that the reaction of thermoplastic resin and thermoplastic elastomer causes quantizes when resin is mixing, the tackify effect is very big.As the concrete example of the polymkeric substance that contains epoxide group, can enumerate " モデイパ one A4200 (trade name) ", acrylonitritrile-styrene resin (AS) graft polymerization " モデイパ one A4400 (trade name) " on EGMA of PMMA graft polymerization on ethylene-methyl methacrylate epoxy methacrylate-trimethoxysilyl propylmethacrylate copolymer (EGMA) that Japanese grease is made.

The addition of sticky polymers (tackifier) is generally 0.01～20 weight portion with respect to whole thermoplastic resin composition 100 weight portions, and preferred 0.05～10 weight portion is more preferably 0.1～10 weight portion, preferred especially 0.1～5 weight portion.During addition less than 0.01 weight portion of sticky polymers, can not obtain the tackify effect fully, when surpassing 20 weight portions, viscosity is too high, is difficult to mixing.

(G) Fu Jia compounding ingredient (composition arbitrarily)

Endless belt of the present invention can also at random cooperate following gradation composition corresponding to various purposes.

Particularly, can add various adjuvants such as antioxidant, thermal stabilizer, various plastifier, light stabilizer, ultraviolet light absorber, neutralizing agent, lubricant, antifoggant, anti blocking agent, slip agent, crosslinking chemical, crosslinking coagent, colorant, fire retardant, spreading agent such as イ Le ガホス 168, イ Le ガノッ Network ス 1010, phosphoric acid kind antioxidant.Particularly, for the release property that improves toner and endless belt, the cleaning effect that is used to scrape the cleaning balde of getting toner residual on the endless belt, preferably add montan wax (sour wax, ester type waxes, partly-hydrolysed ester type waxes, montanic acid slaine) or polyolefin-wax (Tissuemat E, polypropylene wax, its chlorinated polypropylene wax, HDPE oxidized petroleum waves, EVA wax, the broken wax of micro mist).

In addition, significantly do not damaging in the scope of effect of the present invention, can also cooperate compounding ingredients such as various thermoplastic resins, various elastic body, thermoset resin, filler as the 2nd, the 3rd composition.

As the thermoplastic resin of additional compounding ingredient, can enumerate polypropylene, PEF (high density, middle density, low-density, straight chain shape low-density), propylene and ethylene block or random copolymers, the ethylene, propylene copolymer rubber, the ethene butadiene rubber, rubber or latex compositions such as styrene butadiene styrene styrene block copolymer or its hydroderivating thing, polybutadiene, polyisobutylene, polyamide, polyamidoimide, polyacetal, polyarylate, polycarbonate, polymethylmethacrylate, polybutylene terephthalate, polyethylene terephthalate, PEN, polyimide, liquid crystalline polyester, polysulfones, polyphenylene sulfide, poly-bisamide triazole, polyetherimide, polyetheretherketone, acryloyl, Kynoar, polyvinyl fluoride, chlorotrifluoroethylene, ethylene-tetrafluoroethylene copolymer, hexafluoropropylene, the perfluoroalkyl vinyl ether multipolymer, alkyl acrylate copolymer, the polyester ester copolymer, polyetherester copolymer, polyether amide copolymer, polyurethane copolymer etc.These can 1 kinds or use as the potpourri more than 2 kinds or 2 kinds.

As thermoset resin, can enumerate, for example, epoxy resin, melamine resin, phenolics, unsaturated polyester resin etc.These can 1 kinds or use as the potpourri more than 2 kinds or 2 kinds.

As various fillers, can enumerate, for example, fillers such as lime carbonate (heavy, lightweight), talcum, mica, silicon dioxide, aluminium oxide, aluminium hydroxide, zeolite, wollastonite, zeyssatite, glass fibre, beaded glass, bentonitic clay, asbestos, hollow glass ball, graphite (blacklead), molybdenum disulfide, titanium dioxide, carbonic acid fiber, aluminum fiber, styrene steel fibre, brass fiber, aluminium powder, wood powder, rice hulls, graphite (グラ Off アイト), metal powder, conductive metal oxide, organometallics, organic metal salt.In addition, as adjuvant, can enumerate antioxidant (phenols, sulphur class, phosphoric acid ester etc.), lubricant, inorganic organic various pigment, ultraviolet ray and prevent agent, antistatic agent, spreading agent, neutralizing agent, gas-development agent, plastifier, copper inhibitor, fire retardant, crosslinking chemical, fluidity amendment etc.

(2) rerum natura of endless belt:

(a) surface resistivity and specific insulation:

Image processing system of the present invention has the formula (1) below satisfying, the surface resistivity and the specific insulation of (2) and (3) with the endless belt.

[several 5]

SR(100V)/SR(500V)＜VR(100V)/VR(250) (1)

SR(100V)/SR(500V)≤30 (2)

8≤VR(100V)/VR(250V)≤100 (3)

Promptly, the rate of change of maximum/minimum (MAX/MIN) expression that applies the surface resistivity that voltage 100～500V measures (below be sometimes referred to as " surface resistance rate of change "): SR (100V)/SR (500V) is generally below 30 times or 30 times, applying the rate of change that specific insulation MAX/MIN that voltage 100～250V measures represents (below be sometimes referred to as " volume resistance rate of change "): VR (100V)/VR (250V) is generally 8～100, and the pass of surface resistance rate of change: SR (100V)/SR (500V) and volume resistance rate of change: VR (100V)/VR (250V) is surface resistivity＜specific insulation, that is SR (100V)/SR (500V)＜VR (100V)/VR (250V).

Even see that at this point of transfer printing that also can carry out toner for the change in voltage that applies by roller etc. equably the characteristic that the surface resistance rate of change is little is preferred.And, volume resistance rate of change specific surface resistivity rate of change is big, residual charged toner on tape carries out from removing owing to do not carry out secondary transfer printing, therefore, have the effect that cleans easily by cleaning member, have simultaneously when making secondary transfer printing with on the effect that improves of toner transfer efficiency.

Preferred surface resistance change rate: SR (100V)/SR (500V) is in 10 times, and with the pass of volume resistance rate of change: VR (100V)/VR (250V) be that 2 times of surface resistance rate of change are for below the volume resistance rate of change.In addition, the lower limit of surface resistance rate of change is not particularly limited, but is generally about 1.5.

In addition, volume resistance rate of change: VR (100V)/when VR (250V) is excessive exists because change in voltage and problem that electric current leaks.Therefore, volume resistance rate of change: VR (100V)/VR (250V) is generally in 100 times, in preferred 50 times.In addition, the lower limit of volume resistance rate of change: VR (100V)/VR (250V) is with from this some consideration of the effect of removing the electric work energy from showing to give, and is preferably 8, is more preferably 10.

Therefore, formula (8)～(10) below image processing system of the present invention especially preferably satisfies with the endless belt.

[several 6]

SR(100V)/SR(500V)×2≤VR(100V)/VR(250) (8)

1≤SR(100V)/SR(500V)≤10 (9)

10≤VR(100V)/VR(250V)≤50 (10)

In addition, according to its application target and difference, but surface resistivity is generally 1 * 10 with the resistance region of endless belt for image processing system of the present invention ⁶～1 * 10 ¹⁴Ω, or specific insulation is generally 1 * 10 ⁶～1 * 10 ¹⁴Ω cm.

The scope that is more preferably of above-mentioned resistance region is according to purposes and difference, and for example, when using as the photoreceptor endless belt, optionally, preferred surface resistivity is low to be reached: 1 * 10 ¹～1 * 10 ⁹Ω or specific insulation are low to be reached: 1 * 10 ¹～1 * 10 ⁹The zone of Ω cm is so that the electric charge of outside surface escapes into inside surface.When using as the intermediate transfer endless belt, preferred surface resistivity: 1 * 10 ⁶～1 * 10 ¹³Ω or specific insulation: 1 * 10 ⁶～1 * 10 ¹³Ω cm is so that can easily carry out charged-transfer printing.When carrying transfer belt to use, preferred surface resistivity up to: 1 * 10 ¹⁰～1 * 10 ¹⁶Ω or specific insulation up to: 1 * 10 ¹⁰～1 * 10 ¹⁶The zone of Ω cm so that charged easily, even and high voltage also be difficult to breakage.

In addition, the narrowly distributing of the surface resistivity in preferred 1 endless belt, in the zone of separately preferred surface resistivity, the maximal value in 1 and the difference of minimum value are that 2 orders of magnitude are with interior (maximal value is below 100 times or 100 times of minimum value).

In addition, the surface resistivity of endless belt or specific insulation can for example pass through, and " R8340A (trade name) " that " the Ha イレス UP (trade name) " or " ロレス (trade name) " that (strain) ダイヤイ Application ス Star Le メ Application Star is made, ア De バ Application テスト (strain) make etc. are easily measured.

(b) modulus of elasticity in direct stress

The modulus of elasticity in direct stress of endless belt of the present invention is generally 300～2500MPa.If the modulus of elasticity in direct stress of endless belt is low, for example, when being used for image processing system as intermediate transfer belt, owing to a little elongation takes place tension force, unfavorable conditions such as color displacement take place sometimes.In addition, if the modulus of elasticity in direct stress is too high,, produce the necessity that makes the thickness setting attenuation owing to when rotating band, increase motor load.At this moment, if in case enter foreign material between roller and band, or producing owing to the damage of the friction of photoreceptor etc., be easy to generate and break, have problems on reliability, is not preferred therefore.In addition, for the transfer efficiency of the toner that improves primary transfer, it is necessary not making the modulus of elasticity in direct stress of band elongation degree, and to need not make the modulus of elasticity in direct stress of endless belt hardened degree also be necessary.Preferred 300～the 2500MPa of the modulus of elasticity in direct stress is more preferably 500～2000MPa, preferred especially 600～1800MPa.

The modulus of elasticity in direct stress of endless belt can be adjusted from the viewpoint of the transfer efficiency that improves toner, but also can improve effect by the transfer efficiency of the toner of the chemical characteristic (with the contact angle of water) of belt surface, relation that the toner transfer efficiency that caused by electrical characteristics improves effect decides suitable scope.

(c) with the contact angle of water

The outside surface of endless belt of the present invention and the contact angle of water are generally more than 60 ° or 60 ° but 90 ° of less thaies, preferred 65 °～85 °.During 60 ° of the contact angle deficiencies of outside surface and water, on the surface of toner attached to band, cause membranization, sometimes toner secondary transfer printing degradation in efficiency.In addition, in the time of 90 °, when primary transfer, the transfer efficiency of toner worsens.

(d) surface roughness Ra

The surface roughness Ra of endless belt of the present invention is generally 0.05～0.3 μ m, preferred 0.07～0.2 μ m.During surfaceness less than 0.05 μ m, the primary transfer degradation in efficiency of toner sometimes.In addition, when surpassing 0.3 μ m, the secondary transfer printing degradation in efficiency of toner sometimes.

(e) folding number

Crackle for example, when being used in the image processing system as intermediate transfer belt, if resistance to bend(ing) is poor, takes place and becomes and can not obtain image in endless belt of the present invention, therefore, and the preferred good endless belt of resistance to bend(ing).

The degree of resistance to bend(ing) can be estimated quantitatively by the assay method according to the folding number of JIS P-8115, and the endless belt that folding number is big is difficult to crack more, can be judged to be the resistance to bend(ing) excellence.

Particularly, if usually folding number surpasses 5000 times, during device lifetime, can bring into play as the function of the excellence of endless belt and use.Preferred more than 8000 times or 8000 times at folding number in the practicality, be more preferably more than 10000 times or 10000 times.

In the present invention, according to the addition or the alloying of thermoplastic elastomer, folding number is generally more than 50,000 or 50,000, more than preferred 100,000 or 100,000.Its result is in order to prevent the crackle from the end of endless belt, even the secondary processing such as reinforcing band that the anti-crackle of not implementing to carry out is usually used also can obtain sufficient anti-crackle.

(f) shrinkage factor

As the shrink characteristics of endless belt of the present invention, the shrinkage factor with respect to 23 ℃ of humidity 50% of temperature after 60 ℃ of humidity of temperature 90% are placed 24 hours is generally below 0.2 or 0.2, below preferred 0.1 or 0.1, is more preferably below 0.05 or 0.05.When these condition and ranges of shrinkage ratio are big,, can not use thereby become, and electrical characteristics, mechanical property also change sometimes, so be not preferred owing to not only make endless belt change in size in carrying, taking care of become big.

(g) thickness of endless belt

If the thickness of endless belt is blocked up, with the curvature of roller when big, the band outside and inboard modified difference are big, break easily.In addition, the toner that is transferred to the outside portion is out of shape, disperses, thereby causes anamorphose.On the other hand, if the thickness of endless belt is too small since enter between roller and the band small impurity or since with the contacting the damage that causes crackle all can take place easily of photoreceptor etc., the band breakage easily that becomes.Therefore, preferred 70～300 μ m of the thickness of endless belt of the present invention, preferred especially 100～200 μ m.

That is, image processing system of the present invention is used the endless belt, and the modulus of elasticity in direct stress is generally 300～2500MPa, and the outside surface of endless belt and the contact angle of water are generally more than 60 ° or 60 ° but 90 ° of less thaies, and surface roughness Ra is generally 0.05～0.3 μ m.Like this, the modulus of elasticity in direct stress is generally 300～2500MPa, and neither hard also not soft band can show by photoreceptor in primary transfer portion and scrape the effect of getting toner, even concavo-convex with paper the toner transfer efficiency is improved in secondary transfer printing portion for having.In addition, be generally more than 60 ° or 60 ° but 90 ° of less thaies with the surface wettability of representing with the contact angle of water, have neither water wettability neither hydrophobic characteristic, raising to the toner transfer efficiency of primary transfer portion is effective, and, by strengthen the release property of the toner of secondary transfer printing with electrical characteristics and elastic property, as a result of, toner once, secondary transfer printing efficient improves.

In addition, the surfaceness of endless belt (Ra) is generally 0.05～0.3 μ m, moderately roughening, but to once, the raising of the toner transfer efficiency of secondary transfer printing is effective.

Present inventors are conceived to contain the modulus of elasticity in direct stress, surface wettability, surfaceness and the toner transfer efficiency of endless belt of the alloy material of thermoplastic resin and thermoplastic elastomer, at first the toner of secondary transfer printing portion and the adhesion of transfer belt and the transfer printing of toner are studied.

As the adhesion between toner and the transfer belt, generally can think following power in secondary transfer printing portion.

A) adhesion that between transfer belt and toner particle, acts on, so-called van der waals force

B) image force of charged toner electro ultrafiltration

C) owing to toner contacts the contact zones electric power that takes place with transfer belt

D) the crosslinked power of the liquid of the water function between toner and the transfer belt

Therefore, the toner transfer printing condition of secondary transfer printing portion in order to overcome above-mentioned comprehensive adhesion a)～d), applies rightabout electric field effect Coulomb force and carries out toner, can be described as necessary as toner transfer printing condition.

Therefore, in secondary transfer printing portion,, can consider following e as the condition of the adhesion that is used to reduce band and toner)～h).

E) roughening of the appropriateness of belt surface can make van der waals force diminish, and can reduce the toner adhesion on the transfer belt, thus the raising that brings secondary transfer printing efficient.

F) reduction of the resistivity of transfer belt can make toner charged on transfer belt to remove electric capacity easy, thereby help the raising of secondary transfer printing efficient is worked.

G) the little reduction to contact electrification power of difference of the frictional electrification of toner and transfer belt row is effective.

H) the transfer belt surface is that hydrophobicity can make the crosslinked power of liquid reduce, thereby has the effect of the adhesion reduction that makes toner.

That is,, generally can think above-mentioned e in order to improve secondary transfer printing efficient)～h) countermeasure is that effectively on the other hand, when primary transfer, these countermeasures then are antipodal effects.

Therefore, present inventors' toner transfer efficiency of proposing to share respectively primary transfer and secondary transfer printing improves necessary band function.That is, considered when the toner transfer printing, except the Coulomb force of static, also to give mechanical force, that is, given cohesive band.

(a) for the toner adhesion reductionization of secondary transfer printing, can have the band (that is, specific insulation has the voltage-dependent of appropriateness) that has from the resistance characteristic that removes the electric work energy by making toner adhesion is reduced.

(b) for the raising of the toner adhesion of primary transfer, can be soft and do not make the belt surface hydrophobization improve toner adhesion by making carrying raw material as far as possible.

In addition, present inventors think: above-mentioned by making up (a) and (b) can make the toner transfer efficiency of primary transfer and secondary transfer printing improve simultaneously.And, can adjust the means of module of elasticity as the physical strength of not damaging transfer belt, be conceived to thermoplastic elastomer, studied the alloying of thermoplastic elastomer and thermoplastic resin.It found that to have the distinctive resistive voltage dependence that satisfies above-mentioned formula (1)～(3), the module of elasticity of appropriateness, the surface wettability and the surfaceness of appropriateness, can give the raising of primary transfer efficient and secondary transfer printing efficient.

In addition, as conductive material, be generally 50cm by cooperating the DBP oil absorption ³/ 100g～300cm ³Below/the 100g, specific surface area is generally 35～500m ²/ g, volatile content are generally below 20% or 20%, and average primary particle diameter is generally 20～50nm, and satisfy the carbon black of above-mentioned formula (4)～(5), can obtain the good temperature humidity environmental stability and the homogeneity of resistivity.

(3) manufacture method of endless belt:

(a) add hot milling and moulding

In the present invention, can make thermoplastic resin composition moulding endless belt afterwards adding hot milling thermoplastic elastomer and thermoplastic resin and conductive material, also can add hot milling thermoplastic elastomer and thermoplastic resin and conductive material straight forming endless belt.

At this moment, obtaining adding hot milling or adding any of hot milling of thermoplastic resin composition's stage, all regulate the surface resistivity of mixing condition to allow to obtain wishing with what resin combination was shaped to the endless belt stage.Owing to all can not be disperseed fully if not molten condition in either case, therefore, heating-up temperature is preferred high to a certain extent.Particularly, the fusing point of the preferred crystalline resin of lower limit of heating-up temperature is more preferably fusing point+10 ℃.On the other hand, if heating-up temperature is too high, causes thermal decomposition sometimes and cause the rerum natura deterioration.Therefore, particularly, fusing point+80 of the preferred crystalline resin of higher limit of heating-up temperature ℃ are more preferably fusing point+60 ℃.

In addition, if before adding hot milling dried feed, can obtain the endless belt of more good rerum natura sometimes, therefore, preferably implement dried.In addition, according to circumstances, also can be after adding hot milling and making the thermoplastic resin composition, after implementing thermal treatment at fusing point or below the fusing point and generating ester bond, reshaping is the endless belt.

In the present invention, can think certain specific disperse state (alloy state) of thermoplastic elastomer and thermoplastic resin, the roughness of the dispersion of the good electrical conductivity material of making endless belt and the appropriateness on surface, its result can obtain the endless belt of toner transfer printing and release property both excellences.Temperature when therefore, adding hot milling and heated time are important.Therefore, wish to hold the dispersing morphology of the endless belt that obtains on one side, set add hot milling condition on one side.As the index of alloy state of this moment, be voltage dependency characteristic and the inequality of resistivity and the ratio of surface resistivity and specific insulation of above-mentioned resistivity.

Device for adding hot milling is not particularly limited, and can use known technology.For example, form the device of resin combination so long as thermoplastic elastomer, thermoplastic resin, conductive material and other the adding ingredient that optionally cooperates added hot milling, then have no particular limits, can use single shaft extruder, twin shaft mixing extruder, banbury mixers, roller, Bradley Bender mixer, plastic yield registering instrument, kneader etc.

Particularly, be the method for endless belt preferably by twin shaft mixing extruder mixed thermoplastic resin, thermoplastic elastomer, conductive material and other the adding ingredient that optionally cooperates, and at the granulation aftershaping.

For forming method, there is no particular limitation, can adopt known methods such as continuous fusion extrusion moulding, injection molding method, blow molding method, inflation method, centrifugal casting, rubber extrusion forming method to obtain band.Wherein, preferred continuous fusion extrusion moulding.Particularly, the extrusion moulding that pull out on the fusion tube edge cooling that preferably will extrude by annular die or cooling curing limit, and being more preferably can be in inside cooling axle (the マ Application De レ Le) mode or vacuum shaping (the バキュ one system サイジ Application グ) mode of the below extrusion way of the internal diameter of High Accuracy Control pipe.Particularly, be more preferably the inside cooling axle mode that can obtain seamless endless belt is simply used band as image processing system the method for forming.At this moment, the preferred use is provided with a plurality of thermostatic die heads as annular die at its circumferencial direction, and make typical temperature be adjusted to 30～150 ℃ the metal die of scope and the inboard or outer side contacts of pipe is carried out the cooling of melting tube, and, preferably keep drum directly to take out melting tube.

In addition, at this moment, more than the melt viscosity MFR of moulding material (240 ℃, the 2.16kgf loading) is generally that 0.1g/10 divides or 0.1g/10 divides, more than preferred 0.5g/10 divides or 0.5g/10 divides, be more preferably that 1g/10 divides or more than 1g/10 divides.The melt viscosity of moulding material is the not enough 0.1g/10 timesharing of MFR, and the flowability when lacking extrusion molding is difficult to extrusion molding, and the shear stress change that is applied on the molten resin is big, therefore, adjusts difficulty.On the other hand, if the melt viscosity of moulding material is too high, fusion tension force is low, and it is difficult keeping the tubulose attitude during from the molten condition to the cooling curing.The preferred 25g/10 branch of the upper limit of MFR value is more preferably the 20g/10 branch, preferred especially 10g/10 branch.Therefore, in order to obtain such melt viscosity, optionally, preferably adjust viscosity by sticky polymers (tackifier).

In addition, even by the inflation method temporary transient make have the film of folding line after, by after be processed into state that can't see folding line and use as the endless belt, also without any problem, in addition, in case after processing banded sheet, then can also be as endless belt with seam.As the taking-up means, preferably do not carry out the ring pipe flattening and keep the forming method of cylindric direct taking-up.

The equalization of temperature during by such moulding, hold-up time etc. can obtain the endless belt of better rerum natura, therefore, preferably is fit to mated condition and comes adjusting condition.

(b) thermal treatment

The endless belt that rerum natura has improved more can be made in the endless belt that thermal treatment obtains.Particularly, the folding number and the modulus of elasticity in direct stress improve.

Heat-treat condition also depends on the material resin of use, but, carries out common 5～60 minutes preferred about 10～30 minutes under preferred 70～120 ℃ temperature usually at 60～200 ℃.Carry out on the driving limit, roller top that the thermal treatment of endless belt can make band draw and be located at more than 2 or 2, the endless belt can also be mounted to shape cylindraceous and carry out.In addition, can also keep cylindric directly heat-treats.

That is, will extrude the pipe that forms by continuous extrusion from annular die and extrude, keep cylindric taking-up, and be cut into disk and the endless belt that obtains, thus, can realize cost degradation and dimensional stability simultaneously with the state of ring-type.In addition, a plurality of temperature control equipments are set, can make the few endless belt of inequality of resistivity with low cost by circumferencial direction in annular die.

(4) the alloy dispersing morphology of endless belt and conductive material dispersing morphology:

Usually, if mix 2 kinds of materials, there are the situation (be also referred to as fully mutually sometimes and dissolve) of mixing fully and not exclusively mixing and take the situation of island structure.When being the latter, usually, exist big when poor at the volume fraction of two kinds of materials, the structure of taking the sea easily that volume fraction is big, the structure of taking the island easily that volume fraction is little, when the difference of volume fraction hour, melt viscosity difference is brought influence to island structure, we can say melt viscosity little become the sea easily, the big island that becomes easily.

In the present invention, near the inside part of alloy structure (the inner surface part of the thickness direction of endless belt) island structure both can be and near the different structure of island structure of center section (the outer surface part of the thickness direction of endless belt and the part between the inner surface part), also can be identical structure, can also be that material mixes mutually and is that 100nm or the island below the 100nm disperse.

In the present invention, importantly, no matter which kind of island structure is, it is important that the disperse state of the conductive material of the disperse state of the conductive material of center section and Outboard Sections (the outer surface part of the thickness direction of endless belt) almost forms with same form.Promptly, even in the island structure body, adjust material, according to the processing and forming condition, by molten resin orientation of in processing and forming, adding or the stress (shear stress that molten resin is applied, shear rate), or shear history, the orientation of molten resin cooling procedure, shear stress, shear rate etc., the sea of island structure body and the shape on island at random change, simultaneously in the material that has cooperated as the electroconductive stuffings such as carbon black of conductive material, according to its shearing force, orientation, thickness direction in the endless belt, the disperse state of conductive material changes, therefore, the disperse state of controlling the conductive material of this thickness direction is important.

That is, by discovering of present inventors, the endless belt that near Outboard Sections disperse state and near the conductive material that center section is in endless belt is made in the same manner, the voltage-dependent of surface resistivity is few.Although it is different that this has shown in the orientation of Outboard Sections and inside part, from the viewpoint of such conductive material disperse state, moderately homogeneous is important.

In addition, according to common melting mixing, heating extrusion condition, though the dispersion particle diameter of the island part on island can only reach about 50 μ m～100nm,, but disperse the particle diameter miniaturization sometimes to several nm or below several nm according to heating mixing condition and extrusion condition.Particularly, the material of the dispersion particle diameter that 100nm or 100nm are following has the effect of the physical strength of significantly improving, the melt viscosity of material also moderately improves simultaneously, when the dispersion of conductive material, show the effect that can disperse equably, therefore, preferred especially.

In addition, when being with the structure of 2 kinds of material alloysization or when having added the structure of filler etc., the macromolecular material of heating and melting in cooling procedure sometimes structure change.For example, when cooling off sharp, in the presence of filler etc., sometimes material that should crystallization does not carry out crystallization and is residual with noncrystalline state, therefore, in case the profiled part of moulding at high temperature tans by the sun, sometimes will recrystallize, be again to shrink to heavens or physical strength reduces to heavens, therefore, necessity of attention arranged.

In order to stop such state, in the alloying composition, the structure of state of preferably taking crystallization in the material of crystallised component is as profiled part.That is, preferably heat-treat.But, preferably in producing continuously, be provided with during in moulding and remove cooling device to allow to crystallization fully from the viewpoint of cost.

In addition, in the present invention, the confirmation method of the island shape of island structure is not particularly limited, can uses in the direction of regulation and cut off the endless belt and make ultra-thin section, use ruthenium tetroxide (RuO then ₄) wait dyeing about more than 2 minutes or 2 minutes, with known methods such as TEM (TEM) or SEM (scanning electron microscope) observations.

In addition, when this is observed, because the form along the cutting direction island structure of the thickness section of endless belt changes, therefore pay particular attention to, section of cutting off for various circumferencial directions in the endless belt and the section of cutting off at Width, observe near 0～5 μ m of the outside, near thickness pars intermedia ± 5 μ m, near the island form inboard 0～5 μ m.

(5) the image processing system purposes of band:

The purposes of image processing system of the present invention with band is not particularly limited, can preferably be used in the OA instrument field, particularly functional part of rerum natura strictnesses such as requiring dimensional accuracy, resistance to bend(ing), the modulus of elasticity in direct stress.During as seamless belt shape, because unfavorable conditions such as crackle, elongation are few, is suitable with this endless belt.

Image processing system of the present invention is suitable for image processing systems such as electro photography duplicating machine, laser printer, facsimile recorder, particularly intermediate transfer belt, carries transfer belt, photoreceptor belt etc. with band.

Both can be directly use as band endless belt of the present invention, also can twist on the puzzled roller of drum etc. to use.

In addition, for purposes such as end face enhancings, can also be in the outside of this endless belt and/or the inboard optionally along reinforcing bands such as edge applying heatproof zones.As reinforcing band, from aspects such as cost, intensity, preferred biaxially stretched polyester band, the width of this band is 4mm～20mm, is compact in the device design, so preferred.The thickness of reinforcing band is 20 μ m～200 μ m owing to can keep flexibility, can drive this point of endless belt and prevent that crackle from this point taking place see it is preferred with low tension force.

In addition, in order to prevent crawling of endless belt, can also be at the edge of endless belt with the sheet (guiding prevents to crawl) of rubber systems such as bonding agent applying urethane rubber or silicon rubber.At this moment, the preferred sheet width of the rubber film-making of use is 2～10mm, from Design of device and bonding strength aspect, and preferred especially 3～8mm.In addition, from the viewpoint that prevents to crawl, the preferred 0.5～3mm of thickness that crawls and prevent rubber, the simple and easy degree of the applying that prevents from crawling and the effect aspect that prevents to crawl, preferred especially 0.7～2mm.

In addition, make up above-mentioned reinforcing band, reinforcing band is fitted on the endless belt, the having of guiding that prevent from owing to having fitted to crawl prevents with the effect that crackle takes place and prevents with the effect of crawling, so preferred.

That is, image processing system of the present invention is particularly suitable for intermediate transfer belt, conveying transfer belt, transfer-fixing band, photographic fixing band, photoreceptor belt or the developing sleeve of seamless shape with band.

Below, the image processing system of the main points to the of the present invention the 1st～3 describes respectively with the endless belt.

The invention of＜the 1 main points 〉

The complex of molded thermoplastic elastic body and thermoplastic resin and conductive material forms, and the formula (1) below satisfying, the image processing system of (2) and (3) are used the endless belt.

[several 7]

SR(100V)/SR(500V)＜VR(100V)/VR(250) (1)

SR(100V)/SR(500V)≤30 (2)

In 8≤VR (100V)/VR (250V)≤100 (3) formulas, SR (100V) expression apply 10 second 100V voltage and the surface resistivity measured, SR (500V) expression apply 10 second 500V voltage and the surface resistivity measured, VR (100V) expression apply 10 second 100V the specific insulation of voltage when measuring, VR (250V) expression apply 10 second 250V the specific insulation of voltage when measuring.

The inventive images of the 1st main points form device with band in, the voltage-dependent of voltage-dependent specific surface resistivity rate that what is called satisfies above-mentioned formula (1) expression specific insulation is big.In addition, the voltage-dependent that what is called satisfies formula (2) and formula (3) presentation surface resistivity is little, and the voltage-dependent of specific insulation is suitably big.

Like this, because the voltage-dependent of the voltage-dependent specific surface resistivity rate of specific insulation is big, and the voltage-dependent of specific insulation is suitably big, primary transfer with on charged toner when carrying out secondary transfer printing, suitably remove in the tape thickness direction, its result can improve because the toner release property effect that causes except that electricity certainly of toner.

The invention of＜the 2 main points 〉

Be that a kind of image processing system is used the endless belt, this endless belt molded thermoplastic elastic body and thermoplastic resin and conductive material and be that the complex of the sticky polymers that divides of 0.01～10g/10 forms according to the melt flow rate value (190 ℃, 2.16kgf loading) that JIS K7210 measures, and the amount of sticky polymers is 0.01～20 weight portion with respect to total amount 100 weight portions of thermoplastic elastomer and thermoplastic resin, and the amount of conductive material is 0.1～30 weight portion with respect to total amount 100 weight portions of thermoplastic elastomer and thermoplastic resin.

The sticky polymers that adds, promptly, be shown as the sticky polymers of the value of 0.01～10g/10 branch scope according to the MFR value (190 ℃, 2.16kgf loading) of JIS K7210 mensuration, make and apply the little sheet resistance value of voltage-dependent and can show, promptly, in the endless belt of having used the thermoplastic resin/thermoplastic elastomer/conductive material mixed system that does not add sticky polymers fully, not talkative sheet resistance value to apply voltage-dependent fully little, obtain high-precision picture element and have any problem.Its reason can be thought because the differences in viscosity of full-bodied thermoplastic resin and low viscous thermoplastic elastomer is big, when low viscous thermoplastic elastomer is mixing with can not say so mixing of other compositions fully, therefore, the composition of each in the endless belt is dispersed low.In order to improve dispersiveness, the all viscosity of thermoplastic resin/thermoplastic elastomer/conductive material mixed system is increased, even contain the low viscous thermoplastic elastomer of a great deal of, also can bring up to the viscosity that various compositions are fully disperseed, cooperate the sticky polymers of regulation MFR value with the ratio of regulation.

Sticky polymers preferably has the polymkeric substance of epoxide group, is more preferably the polymkeric substance with glytidyl methacrylate base.Polymkeric substance with epoxide group such as glytidyl methacrylate base because reactive high, causes the macromolecule quantification with thermoplastic resin or thermoplastic elastic precursor reactant when resin is mixing, the tackify effect is very big.Therefore, the polymkeric substance that contains epoxide group by use, the sticky polymers that preferably has the glytidyl methacrylate base can more positively obtain the improved effect of the mixing property of homogeneous, and the low voltage-dependent that applies of the sheet resistance value of bringing therefrom.

In the invention of the 2nd main points, can make thermoplastic resin composition's aftershaping endless belt adding hot milling thermoplastic elastomer and thermoplastic resin and conductive material and sticky polymers, also can add hot milling thermoplastic elastomer and thermoplastic resin and conductive material and sticky polymers and straight forming endless belt.

Also be not particularly limited for the heating compounding process, can use known technology.For example, preferred at first thermoplastic resin, thermoplastic elastic, conductive material, sticky polymers and other the adding ingredient that optionally cooperates are added hot milling, the granulation aftershaping is the method for endless belt.

The invention of＜the 3 main points 〉

It is a kind of endless belt for image-forming apparatuses; This endless belt moulding contains the thermoplastic polymer composition of thermoplastic elastomer (TPE) and the complex of conductive material forms; Wherein, Thermoplastic elastomer (TPE) comprises the polyester-polyester block copolymer that the soft segment by the hard segment of aromatic polyester and aliphatic polyester consists of; And the amount of the thermoplastic elastomer (TPE) in the thermoplastic polymer composition is 10 % by weight or more than 10 % by weight; With respect to thermoplastic elastomer (TPE) and thermoplastic resin total amount 100 weight portions; The amount of conductive material is 1～20 weight portion; And

The thermoplastic elastomer that uses in the invention of the 3rd main points comprises hard segment and uses aromatic polyester, soft chain segment to use the pet copolyester segmented copolymer of aliphatic polyester.

Used to comprise hard segment and be aromatic polyester, soft chain segment thermoplastic elastomer endless belt, be difficult to subsidiary crooked fine wrinkle as the pet copolyester segmented copolymer of aliphatic polyester, and the dimensional accuracy excellence.That is, have and give the speciality of the flexibility of appropriateness to the endless belt what the endless belt made that the anti-crackle of the endless belt that is difficult to transform significantly improves.

As the pet copolyester segmented copolymer, more specifically, be that to make with (a) carbon number be that polyester oligomer, (d) of 2～12 aliphatics and/or ester ring type glycol, (b) aromatic dicarboxylic acid or its Arrcostab, (c) aliphatics or ester ring type dicarboxylic acid and aliphatic diol condensation is raw material by aliphatics lactone or the synthetic polyester oligomer of aliphat single-alcohol carboxylic acid, the material of the oligomer polycondensation that obtains by esterification or ester exchange reaction.

The crystalline melt point of the thermoplastic elastomer that uses in the invention of the 3rd main points is 190～220 ℃, according to (240 ℃ of JIS K7210,2.16kgf loading) melt flow rate of Ce Dinging (MFR) is for the 10g/10 branch or more than the 10g/10 branch, below preferred 18g/10 branch or 18g/10 divide.

During 190 ℃ of crystalline melt point less thaies, too soft, when band application is added tension force, elongation when having.When crystalline melt point surpasses 220 ℃, too hardening, the band easy crackle that becomes is difficult to obtain sufficient mechanical endurance sometimes, in addition, also variation of the fine wrinkle of anti-roller tack sometimes.

The not enough 10g/10 timesharing of MFR is when conductive materials such as mixing carbon black, though beating action is good, it is good that dispersiveness also becomes, but because melt viscosity uprises, the shear stress that when processing and forming material is applied too uprises, and material generates heat and causes hot deterioration sometimes.Surpass the 18g/10 timesharing,, stir the effect of being difficult to, sometimes the dispersed variation of conductive material because melt viscosity is low.

In the invention of the 3rd main points, be used in the thermoplastic polymer composition of endless belt, beyond above-mentioned thermoplastic elastomer, can also contain thermoplastic resin.

The thermoplastic resin in the thermoplastic polymer composition that uses in the moulding material of endless belt of the present invention and the weight ratio of thermoplastic elastomer are preferred 10/90～90/10, are more preferably 80/20～20/80, preferred especially 60/40～40/60.

Thermoplastic elastomer surpasses thermoplastic elastomer/thermoplastic resin (weight ratio)=90/10 o'clock, that is, thermoplastic resin after a little while, band is too soft, causes the band elongation when applying belt tension, the toner image disorder is not so be preferred.On the contrary, thermoplastic elastomer is not enough thermoplastic elastomer/thermoplastic resin (weight ratio)=10/90 o'clock, that is, thermoplastic resin is with too hardening for a long time, is easy to generate crackle, becomes to adhere to the fine wrinkle of rod easily, so be not preferred.

In addition, from the viewpoint of the dispersiveness of conductive material, the MFR of preferred thermoplastic resin is littler than the MFR of thermoplastic elastomer.

In thermoplastic resin, also can contain polymerization catalyst.For example, as the catalyst for synthesizing of polyalkylene terephthalates, can utilize the polymerization catalyst of catalyzer residual in polyalkylene terephthalates as thermoplastic resin and thermoplastic elastomer.

In addition, the endless belt of the invention of the 3rd main points since surface resistivity than higher, specific insulation is lower, and the inequality of resistivity is little, from the toner transfer printing excellence of photoreceptor to band, also good from band simultaneously to the toner transfer printing of paper, also can prevent the picture element deterioration that causes owing to subsidiary fine wrinkle.

The invention of＜the 4 main points 〉

Be that satisfied following formula (1), the image processing system of (2) and (3) are used the endless belt.

[several 8]

SR(100V)/SR(500V)＜VR(100V)/VR(250) (1)

SR(100V)/SR(500V)≤30 (2)

8≤VR(100V)/VR(250V)≤100 (3)

The inventive images of the 4th main points form device with band in, the voltage-dependent of voltage-dependent specific surface resistivity rate that what is called satisfies above-mentioned formula (1) expression specific insulation is big.In addition, the voltage-dependent that what is called satisfies formula (2) and formula (3) presentation surface resistivity is little, and the voltage-dependent of specific insulation is suitably big.Like this, because the voltage-dependent of the voltage-dependent specific surface resistivity rate of specific insulation is big, and the voltage-dependent of specific insulation is suitably big, primary transfer with on charged toner when carrying out secondary transfer printing, suitably remove in the tape thickness direction, its result can improve because the toner release property effect that causes except that electricity certainly of toner.

Embodiment

Below, by embodiment the present invention is described in further detail, as long as but be no more than its purport, the present invention is not subjected to the qualification of following embodiment.In addition, the evaluation method of the characteristic of the raw material that uses in following example, heating compounding process, endless belt is as follows.

＜raw material 〉

Raw material uses following substances.In addition, in table, PEER represents the pet copolyester copolymer elastomer, and PBT represents polybutylene terephthalate.Cooperation ratio in table is that the total amount with thermoplastic elastomer and thermoplastic resin is 100 weight portions.

(1) PBT1: the エ of Mitsubishi Application ジニアリ Application グプラスチッ Network ス (strain) makes " ノバデュラ Application 5040ZS (trade name) " (abbreviating " 5040ZS " as);

Weight-average molecular weight=40000

PS conversion weight-average molecular weight=122000

MFR (240 ℃, the 2.16kgf loading): 4g/10 branch

(2) PBT2: the エ of Mitsubishi Application ジニアリ Application グプラスチッ Network ス (strain) makes " ノバデュラ Application 5010 (trade names) " (abbreviating " 5010 " as);

MFR (240 ℃, the 2.16kgf loading): 16g/10 branch

(3) PBT3: clock spins and closes fibre (strain) manufacturing " 128 (trade name) " (abbreviating " clock spins 128 " as);

Weight-average molecular weight=40000

PS conversion weight-average molecular weight=122000

MFR (240 ℃, the 2.16kgf loading): 7g/10 branch

(4) PC (abbreviating " PC " as);

Weight-average molecular weight=28000

PS conversion weight-average molecular weight=64000

MFR (240 ℃, the 2.16kgf loading): 4.8g/10 branch

(5) thermoplastic elastomer 1: Japan spins long-pending (strain) and makes polyester-ether elastic body " ペ Le プレ Application P150B (trade name) " (abbreviating " P150B " as);

MFR (240 ℃, the 2.16kgf loading): 19g/10 branch

(6) thermoplastic elastomer 2: Japan spins long-pending (strain) and makes polyester-ether elastic body " ペ Le プレ Application P90B (trade name) " (abbreviating " P90B " as);

MFR (240 ℃, the 2.16kgf loading): 20g/10 branch

(7) thermoplastic elastomer 3: Japan spins long-pending (strain) and makes polyester-polyester elastic body " ペ Le プレ Application S3001 (trade name) " (abbreviating " S3001 " as);

MFR (240 ℃, the 2.16kgf loading): 21g/10 branch

(8) thermoplastic elastomer 4: Japan spins long-pending (strain) and makes polyester-polyester elastic body " ペ Le プレ Application S2001 (trade name) " (abbreviating " S2001 " as);

MFR (240 ℃, the 2.16kgf loading): 21g/10 branch

Crystalline melt point: 206 ℃

(9) thermoplastic elastomer 5: Japan spins long-pending (strain) and makes polyester-polyester elastic body " ペ Le プレ Application S1001 (trade name) " (abbreviating " S1001 " as);

MFR (240 ℃, the 2.16kgf loading): 21g/10 branch

Crystalline melt point: 200 ℃

(10) thermoplastic elastomer 6: Japan spins long-pending (strain) and makes polyester-polyester elastic body " ペ Le プレ Application S6001 (trade name) " (abbreviating " S6001 " as);

MFR (240 ℃, the 2.16kgf loading): 15g/10 branch

Crystalline melt point: 218 ℃

(11) carbon black: electrochemical (strain) is made " デ Application カ Block ラッ Network (trade name) "

DBP oil absorption=180ml/100g

Specific surface area=65m ²/ g

Volatile content=0%

Average primary particle diameter=39nm

(12) tackifier 1: Japanese grease (strain) manufacturing is contained the polymkeric substance " モディパ one A4400 (trade name) " (abbreviating " A4400 " as) of glytidyl methacrylate;

MI value (190 ℃, the 2.16kgf loading) according to JIS K7210 mensuration: 0.3g/10 branch

(13) tackifier 2: Japanese grease (strain) is made " モディパ one A4200 (trade name) " (abbreviating " A4200 " as);

MI value (190 ℃, the 2.16kgf loading) according to JIS K7210 mensuration: 0.6g/10 branch

(14) polymerization catalyst: butanols titanium (IV)/magnesium acetate

(15) sequestrant: Network ラリア Application トジヤパ Application (strain) is made phosphoric acid kind antioxidant " PEPQ (trade name) "

＜add hot milling 〉

Use twin shaft mixing extruder (IKG (strain) makes " PMT32 "), a various raw material carry out material granuleization with the condition of record in the table.

The forming method of＜endless belt 〉

With the material granule drying that obtains, and by diameter phi 160mm, 6 screw types of die head slippage width 1.5mm have the extruder (circumferencial direction in annular die has 16 temperature control equipments) of 40mm φ annular die, state with melting tube below annular die is extruded, and with the melting tube extruded be installed in by supporting rod with the same axis of annular die on the outside surface (80 ℃ of temperature) of cooling axle of external diameter 153mm contact and carry out cooling curing, then, seamless band is taken out to keep columnar state with the 4 point type belt knockout machines that are arranged on the outside by the columnar neutron that is arranged in the seamless band, length with 340mm is cut into disk simultaneously, Yi Bian adjust extrusion capacity and take-off speed, extrusion temperature is so that thickness is 140 μ m, surface resistivity is 1 * 10 ¹⁰～1 * 10 ¹²Ω, one side makes the seamless band of resin system that internal diameter is 151mm.Condition of molding is documented in the table.

In addition, for moulding material, (240 ℃ of the fusion index instruments made from the smart machine of Japan (strain) " T-01 (trade name) ", 2.16kgf loading), take test portion in heating beginning back during 1 minute of 5～6 minutes, measure (m) weight, use formula: MFR (g/10 branch)=(600 * m) ÷ t (t represent test portion take the time (second)) (here being 60 seconds), m represents the weight (g) that test portion is taked) obtain MFR.

＜estimate

Optionally the endless belt is cut into necessary size and comes implementation evaluation, show the result in the table.

(1) surface resistivity:

Use (strain) ダイヤイ Application ス Star Le メ Application Star to make " Ha イレス UP (trade name) (UR terminal) ", under 100V, 500V, each condition of 10 seconds with 20mm measuring space band circumferencial direction.

(2) specific insulation:

Use (strain) ダイヤイ Application ス Star Le メ Application Star to make " Ha イレス (trade name) (UR terminal) ", under 100V, 250V, each condition of 10 seconds with 20mm measuring space band circumferencial direction.

(3) resistance environment rate of change:

Respectively in surface resistivity and specific insulation, obtain the resistivity of after 10 ℃ of temperature, humidity are placed 20 hours 20% time (LL condition) and after 30 ℃ of temperature, humidity are placed 20 hours 80% time the ratio (resistivity (LL condition)/resistivity (HH condition)) of the resistivity of (HH condition), as resistance environment rate of change.

(4) as the durability evaluation of endless belt:

The endless belt that obtains is installed in the image processing system as intermediate transfer belt, carries out image output continuously, crackle takes place in the evaluation stage that what are opened in output on the endless belt.

(5) shrinkage factor:

After the endless belt being cut into the disk of certain width of 200mm, cut off a place at Width again.Then, with the sample that obtains after 23 ℃ of temperature, humidity are placed 24 hours 50% time, with the length of the circumferencial direction of three-dimensional dimension method analyzer (" GJ800A (trade name) " that Tokyo Micronics Inc. of the miniscope that ニコ Application company makes makes has been installed) mensuration endless belt.With this measured value as (P).

Then, with said sample in the thermostatic constant wet chamber of the condition that is set at 60 ℃ of temperature, humidity 90%, place took out in 24 hours after, after 23 ℃ of temperature, humidity 50% are placed 24 hours, use three-dimensional dimension method analyzer to measure the length of the circumferencial direction of endless belt again.With this measured value as (Q).Shrinkage factor through type with respect to the sample after each temperature humidity condition placement of 23 ℃ of temperature, humidity 50%: shrinkage factor={ (P)-(Q) }/(P) * 100 are obtained.

(6) girth is poor:

After the endless belt being cut into the disk of certain width of 200mm, cut off a place at Width again.Then, with the sample that obtains after 23 ℃ of temperature, humidity are placed 24 hours 50% time, with the length of the circumferencial direction at three-dimensional dimension analyzer (" GJ800A (trade name) " that Tokyo Micronics Inc. of the miniscope that ニコ Application company makes makes has been installed) mensuration both ends, endless belt.The difference of the length of the circumferencial direction at both ends is poor as girth.

(7) modulus of elasticity in direct stress:

Based on ISO R1184-1970 standard, test film is cut into wide 15mm, long 150mm, with draw speed 1mm/min, spacing jig is that 100mm measures.

(8) yield point strength:

Based on JIS Z1702-62 standard, test film is cut into wide 15mm, long 150mm, with draw speed 50mm/min, spacing jig is that 100mm, graticule are spaced apart 50mm and measure.

(8) tension failure elongation:

(9) resistance to bend(ing) (folding resistance):

Based on JIS P-8115 standard, test film is cut into the size of wide 15mm, long 100mm, with the MIT testing machine under the condition of rate of bending 175 times/minute, about 135 ° of the anglecs of rotation, stretching loading 1.0kgf, if the radius-of-curvature of the leading section of warpage anchor clamps is R=0.38mm, measure the number of bends when destroying.

(10) fine wrinkle of anti-roller tack:

Fig. 3 is the side view of the evaluation method of the expression fine wrinkle of anti-roller tack.Shown in Fig. 3 (a), the sample 31 of wide 15mm, long 44mm on the periphery volume of the roller 30 of φ 14mm, both ends are standing with band, under the environment of 60 ℃ of temperature, humidity 90%, placed 2 hours, placed 24 hours down in the environment of 23 ℃ of temperature, humidity 50% again, then, take off sample 31 from roller 30, as Fig. 3 (b), mensuration has the distance L (mm) between two minor faces of sample 31 of fine wrinkle, use formula: roller fine wrinkle recovery rate is calculated in roller fine wrinkle recovery rate=L/44 * 100, as the fine wrinkle of anti-roller tack.

(11) with the contact angle of water:

Drip a water at the outside surface of endless belt, the analyzer " G-1 " that uses エ Le マ one to make is measured the contact angle of the water after 1 minute.

(12) surfaceness

The endless belt outer surface is cut into the sample of about 50mm * 50mm, the super degree of depth measuring shape microscope trade name " VK8500 (trade name) " of using (strain) キ one エ Application ス to make, under the condition determination of 100 times on lens, spacing 0.01 μ m, automatic gate speed, amplification 835, measure the surfaceness in 4: 40 μ m * 40 μ m zones, with the measured value of its mean value as surfaceness.

(13) picture appraisal:

Fig. 1 is the side view that intermediate transfer belt is shown.As shown in Figure 1, will the wide PET band of thickness 50 μ m, the 10mm of the inside and outside both ends applying polyester of endless belt (20) as interior reinforcing band (22) and outside reinforcing band (21), and be installed in the color laser printer of the machine " LP3000C " by name that Seiko-Epson (strain) makes in the crawl endless belt of guiding rubber (23) of wide the preventing of thickness 1.0mm, the 5mm of interior both ends applying polyurethane system, with the CCD camera coloured image is expanded into 20 times, the evaluation map picture.

Image (middle deinking) be with toner not the part of transfer printing be below 5% or 5% as zero, will above 5% as △.

Image shift be with 50 μ m or below the 50 μ m as zero, surpass 50 μ m but 80 μ m or below the 80 μ m as △, surpass the conduct of 80 μ m *.

Image once, the secondary transfer printing characteristic be with toner not the part of transfer printing be below 5% or 5% as zero, will above 5% as △.

＜embodiment 1～8, comparative example 1～4, reference example 1 〉

These examples are the examples that are used to illustrate the invention of the 1st main points, the 2nd main points and the 4th main points.

Embodiment 1～4:

Proportioning with table 1 record adds hot milling, obtains material granule.This moment to add the hot milling condition as shown in table 1, regulate resin temperature and the hold-up time in mixing roll, and regulate mixing condition so that when the reaction in mixing roll suppressed, resistance became semiconductor regions.This material granule of extrusion molding is made the endless belt.In addition, in table 1, the amount that cooperates carbon black, sequestrant and tackifier among the * is the weight portion with respect to total amount 100 weight portions of thermoplastic elastomer and thermoplastic resin.

Any endless belt, surface resistivity SR (100V) mean value is 1 * 10 ¹¹～2 * 10 ¹¹Ω/, specific insulation VR (100V) mean value is 3.6 * 10 ¹⁰～6.0 * 10 ¹0 Ω cm, the voltage-dependent SR (100V) of the 100V～500V of surface resistivity/SR (500V) is 1.5～5, in 1 order of magnitude (10 times), the voltage-dependent VR (100V) of the 100V～250V of specific insulation/VR (250V) is 25～40, in 2 orders of magnitude (100 times), obtain good non-voltage-dependent.

With these bands when being installed in the image processing system, can obtain the toner preferable image among both in primary transfer, secondary transfer printing as intermediate transfer belt as Fig. 1.

In addition, even crackle does not take place in 200,000 images of output yet under this state, with low uncertainty with resistance value that the HH condition/the LL condition is represented, the resistance inequality is also less.Various characteristics is shown in table 2.

Embodiment 5

Except the kind of change thermoplastic elastomer, obtain the endless belt similarly to Example 1.Embodiment 5 also can obtain the outward appearance excellence, and because the uneven few endless belt of change in resistance that environment causes and low-resistance rate.When being installed in this endless belt in the image processing system, can obtain preferable image.This moment mainly create conditions and various characteristics is shown in table 1 and the table 2.

Embodiment 6:

Except the kind of change tackifier, obtain the endless belt similarly to Example 1.Embodiment 6 also can obtain the outward appearance excellence, and because the uneven few endless belt of change in resistance that environment causes and low-resistance rate.When being installed in this endless belt in the image processing system, can obtain preferable image.This moment mainly create conditions and various characteristics is shown in table 1 and the table 2.

Embodiment 7

Except the kind of change thermoplastic elastomer, obtain the endless belt similarly to Example 1.Embodiment 7 also can obtain the outward appearance excellence, and because the uneven few endless belt of change in resistance that environment causes and low-resistance rate.When being installed in this endless belt in the image processing system, can obtain preferable image.This moment mainly create conditions and various characteristics is shown in table 1 and the table 2.

Embodiment 8

Except not using tackifier, obtain the endless belt similarly to Example 7.Embodiment 8 also can obtain the outward appearance excellence, and because the uneven few endless belt of change in resistance that environment causes and low-resistance rate.When being installed in this endless belt in the image processing system, can obtain preferable image.Can infer that this is because even without using tackifier, polymerization catalyst also can promote the intermiscibility of thermoplastic elastomer and thermoplastic resin, produces the tackify effect, thereby improves dispersity of carbon black.This moment mainly create conditions and various characteristics is shown in table 1 and the table 2.

Comparative example 1

In the proportioning of similarly to Example 1 thermoplastic elastomer and thermoplastic resin, add carbon black except not using tackifier, and adjust carbon black concentration, obtain the endless belt similarly to Example 1 so that resistivity is beyond the semiconductor regions.Mainly creating conditions of this moment is shown in table 3.In addition, in table 3, the amount that cooperates carbon black, sequestrant and tackifier among the * is the weight portion with respect to total amount 100 weight portions of thermoplastic elastomer and thermoplastic resin.

In comparative example 1, though surfaceness is good, the voltage-dependent of surface resistivity and specific insulation is big, and the concentration of carbon that is used to obtain semiconductive resistance value can only add etc. on a small quantity, and therefore the change of the resistivity that is caused by environment is also big.If will be with the device that is used for the intermediate transfer mode as intermediate transfer belt, at the thickness direction bleeder resistance.Various characteristics is shown in table 4.

Comparative example 2

In the proportioning of similarly to Example 2 thermoplastic elastomer and thermoplastic resin, add carbon black except not using tackifier, and adjust carbon black concentration, obtain the endless belt similarly to Example 2 so that resistivity is beyond the semiconductor regions.Mainly creating conditions of this moment is shown in table 3.

In comparative example 2, though surfaceness is good, the voltage-dependent of surface resistivity and specific insulation is bigger than comparative example 1, and the concentration of carbon that is used to obtain semiconductive resistivity can only add on a small quantity, and the change of the resistivity that is caused by environment is also big.Various characteristics is shown in table 4.

Comparative example 3

In the proportioning of similarly to Example 3 thermoplastic elastomer and thermoplastic resin, add carbon black except not using tackifier, and adjust carbon black concentration, obtain the endless belt similarly to Example 3 so that resistivity is beyond the semiconductor regions.Mainly creating conditions of this moment is shown in table 3.

In comparative example 3, though surfaceness is good, the voltage-dependent of surface resistivity and specific insulation is bigger than comparative example 1,2, if be used for the device of intermediate transfer mode as intermediate transfer belt, at the thickness direction bleeder resistance.Various characteristics is shown in table 4.

Comparative example 4

In thermoplastic elastomer, add carbon black except not adding thermoplastic resin, and adjust carbon black concentration, obtain the endless belt similarly to Example 1 so that resistance is beyond the semiconductor regions.Mainly creating conditions of this moment is shown in table 3.

In comparative example 4, though surfaceness is good, but because the poor dispersion of carbon etc., the concentration of carbon that is used to obtain semiconductive resistivity can only add on a small quantity, the voltage-dependent maximum of surface resistivity and specific insulation, if be used for the device of intermediate transfer mode as intermediate transfer belt, at the thickness direction bleeder resistance.In addition, the change of the resistivity that is caused by environment is also big.Various characteristics is shown in table 4.

Reference example 1

Use the PBT/PC alloy as thermoplastic resin and add carbon black except mismatching thermoplastic elastomer, select mixing condition and adjust carbon black concentration so that resistivity is beyond the semiconductor regions, to obtain the endless belt similarly to Example 1.Mainly creating conditions of this moment is shown in table 3.

In reference example 1, though the voltage-dependent of surfaceness, surface resistivity and specific insulation is good, because module of elasticity is big, the middle void of a small amount of literal takes place.Various characteristics is shown in table 4.

Table 1

Embodiment			1	2	3	4	5	6	7	8
Embodiment			1	2	3	4	5	6	7	8	Cooperate * (weight portion)	Thermoplastic elastomer	P150B (weight %)	50	30	70	90	-	50	-	-
P90B (weight %)	-	-	-	-	50	-	-	-					P150B (weight %)	50	30	70	90	-	50	-	-
P90B (weight %)	-	-	-	-	50	-	-	-	S3001 (weight %)	-			-	-	-	-	-	50	50
Thermoplastic resin	5040ZS (weight %)	50	70	30	10	50	50	50	S3001 (weight %)	-			-	-	-	-	-	50	50	50
	5040ZS (weight %)	50	70	30	10	50	50	50	PC (weight %)	-		-	-	-	-	-	-	-		50
	Carbon black		18	19	17	16	15	18	PC (weight %)	-		-	-	-	-	-	-	-	18	15
Polymerization catalyst	Carbon black		18	19	17	16	15	18	Ti concentration (ppm)	80		80	80	80	80	80	80	80	18	15
	Mg concentration (ppm)	40	40	40	40	40	40	40	Ti concentration (ppm)	80		80	80	80	80	80	80	80	40
	Mg concentration (ppm)	40	40	40	40	40	40	40	Sequestrant			0.3	0.3	0.3	0.3	0.3	0.3	0.3	40	0.3
Tackifier	A4400	1.5	1.0	2.0	2.0	1.5	-	1.0	Sequestrant			0.3	0.3	0.3	0.3	0.3	0.3	0.3	-	0.3
	A4400	1.5	1.0	2.0	2.0	1.5	-	1.0	A4200	-		-	-	-	-	1.5	-	-	-
	The MFR of moulding material (g/10 branch)			1.5	1	4	8	8	A4200	-		-	-	-	-	1.5	-	-	2	2	4
Add the hot milling condition	The MFR of moulding material (g/10 branch)			1.5	1	4	8	8	Temperature cylinder (℃)		250	250	250	240	240	250	250	250	2	2	4
	The mould temperature (℃)		240	240	240	240	240	240	Temperature cylinder (℃)		250	250	250	240	240	250	250	250	240	240
	The mould temperature (℃)		240	240	240	240	240	240	Spiral rotation number (rpm)		130	130	130	130	130	130	130	130	240	240
	Condition of molding	Temperature cylinder (℃)		250	260	250	250	240	Spiral rotation number (rpm)		130	130	130	130	130	130	130	130	250	250	250
The mould temperature (℃)		Temperature cylinder (℃)		250	260	250	250	240	240	240	240	240	240	240	245	245			250	250	250
The mould temperature (℃)		Spiral rotation number (rpm)		15.5	15.5	14	13	13	240	240	240	240	240	240	245	245	15	15	15
Draw speed (m/min)		Spiral rotation number (rpm)		15.5	15.5	14	13	13	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	15	15	15

Table 2

Embodiment				1	2	3	4	5	6	7	8
Embodiment				1	2	3	4	5	6	7	8	Electrical characteristics	SR (100V) (mean value) (Ω)			1.00×10 ¹¹	1.00×10 ¹¹	200×10 ¹¹	1.00×10 ¹¹	1.00×10 ¹¹	3.00×10 ¹¹	8.00×10 ¹⁰	8.00×10 ¹⁰
SR (100V) uneven (MAX/MIN)			3	3	3	3	5	3	3	4			SR (100V) (mean value) (Ω)			1.00×10 ¹¹	1.00×10 ¹¹	200×10 ¹¹	1.00×10 ¹¹	1.00×10 ¹¹	3.00×10 ¹¹	8.00×10 ¹⁰	8.00×10 ¹⁰
SR (100V) uneven (MAX/MIN)			3	3	3	3	5	3	3	4	SR (500V) (mean value) (Ω)			6.00×10 ¹⁰	5.00×10 ¹⁰	4.00×10 ¹⁰	2.00×10 ¹⁰	1.00×10 ¹⁰	1.00×10 ¹¹	6.00×10 ¹⁰	4.00×10 ¹⁰
SR(100V)/SR(500V)			1.5	2	5	5	10	3	1.3	2	SR (500V) (mean value) (Ω)			6.00×10 ¹⁰	5.00×10 ¹⁰	4.00×10 ¹⁰	2.00×10 ¹⁰	1.00×10 ¹⁰	1.00×10 ¹¹	6.00×10 ¹⁰	4.00×10 ¹⁰
SR(100V)/SR(500V)			1.5	2	5	5	10	3	1.3	2	VR (100V) (mean value) (Ω)			4.00×10 ¹⁰	4.80×10 ¹⁰	4.50×10 ¹⁰	3.60×10 ¹⁰	4.00×10 ¹¹	3.00×10 ¹⁰	400×10 ¹⁰	3.1×10 ¹⁰
VR (100V) uneven (MAX/MIN)			8	8	9	9	10	8	7	8	VR (100V) (mean value) (Ω)			4.00×10 ¹⁰	4.80×10 ¹⁰	4.50×10 ¹⁰	3.60×10 ¹⁰	4.00×10 ¹¹	3.00×10 ¹⁰	400×10 ¹⁰	3.1×10 ¹⁰
VR (100V) uneven (MAX/MIN)			8	8	9	9	10	8	7	8	VR (250V) (mean value) (Ω)			1.0×10 ⁹	1.9×10 ⁹	18×10 ⁹	1.2×10 ⁹	1.00×10 ¹⁰	1.0×10 ⁹	18×10 ⁹	2.5×10 ⁹
VR(100V)/VR(250V)			40	25	25	30	40	30	25	30	VR (250V) (mean value) (Ω)			1.0×10 ⁹	1.9×10 ⁹	18×10 ⁹	1.2×10 ⁹	1.00×10 ¹⁰	1.0×10 ⁹	18×10 ⁹	2.5×10 ⁹
VR(100V)/VR(250V)			40	25	25	30	40	30	25	30	The environmental change rate		Surface resistivity	4	3	3	3	5	4	3	5
Specific insulation	7	8	8	8	9	7	8	9					Surface resistivity	4	3	3	3	5	4	3	5
Specific insulation	7	8	8	8	9	7	8	9	Mechanical property	The modulus of elasticity in direct stress (MPa)			1300	1800	860	750	1300	1300	1300	1300
Yield point strength (MPa)			35	46	30	25	35	35		The modulus of elasticity in direct stress (MPa)			1300	1800	860	750	1300	1300	1300	1300	35	35
Yield point strength (MPa)			35	46	30	25	35	35		Tension failure elongation (%)			175	17	414	600	175	175	180	180	35	35
Folding resistance (inferior)			※	70,000 times	※	※	※	※		Tension failure elongation (%)			175	17	414	600	175	175	180	180	※	※
Folding resistance (inferior)			※	70,000 times	※	※	※	※		Shrinkage factor (%)			012	0.11	0.12	0.12	0.15	0.13	0.10	010	※	※
Character of surface	With the contact angle of water (°)			68	73	63	60	65		Shrinkage factor (%)			012	0.11	0.12	0.12	0.15	0.13	0.10	010	68	70	70
	With the contact angle of water (°)			68	73	63	60	65	Surfaceness	Ra(μm)		0.13	0.12	0.18	0.22	0.2	0.23	0.13	0.11		68	70	70
	Rmax(μm)		1.9	1.7	1.9	22	2.1	2.1		Ra(μm)		0.13	0.12	0.18	0.22	0.2	0.23	0.13	0.11	1.9	1.8
	Rmax(μm)		1.9	1.7	1.9	22	2.1	2.1		Rz(μm)		11	1	1.3	1.2	1.5	1.3	0.9	0.9	1.9	1.8
	Picture appraisal	Image (coming off)			○	△	○	○		Rz(μm)		11	1	1.3	1.2	1.5	1.3	0.9	0.9	○	○	○	○
Image shift					○	△	○	○	○	○	○	△	○	○	○	○				○	○	○	○
Image shift			The primary transfer characteristic			○	○	○	○	○	○	△	○	○	○	○	○	○	○	○	○
The secondary transfer printing characteristic			The primary transfer characteristic			○	○	○	○	○	○	○	○	○	○	○	○	○	○	○	○

※ does not rupture for 100,000 times

Table 3

Comparative example			1	2	3	4	Reference example 1
Comparative example			1	2	3	4	Reference example 1	Cooperate * (weight portion)	Thermoplastic elastomer	P150B (weight %)	50	30	70	100	-
P90B (weight %)	-	-	-	-	-					P150B (weight %)	50	30	70	100	-
P90B (weight %)	-	-	-	-	-	S3001 (weight %)	-			-	-	-	-
Thermoplastic resin	5040ZS (weight %)	50	70	30	-	S3001 (weight %)	-			-	-	-	-	70
	5040ZS (weight %)	50	70	30	-	PC (weight %)	-		-	-	-	30		70
	Carbon black		16	17	15	PC (weight %)	-		-	-	-	30	14	19
Polymerization catalyst	Carbon black		16	17	15	Ti concentration (ppm)	80		80	80	-	80	14	19
	Mg concentration (ppm)	40	40	40	-	Ti concentration (ppm)	80		80	80	-	80	40
	Mg concentration (ppm)	40	40	40	-	Sequestrant			0.3	0.3	0.3	0.3	40	0.3
Tackifier	A4400	-	-	-	1	Sequestrant			0.3	0.3	0.3	0.3	1	0.3
	A4400	-	-	-	1	A4200	-		-	-	-	-	1
	The MFR of moulding material (g/10 branch)			7	5.5	A4200	-		-	-	-	-	9	18	0.5
Add the hot milling condition	The MFR of moulding material (g/10 branch)			7	5.5	Temperature cylinder (℃)		250	250	250	240	260	9	18	0.5
	The mould temperature (℃)		240	240	240	Temperature cylinder (℃)		250	250	250	240	260	240	260
	The mould temperature (℃)		240	240	240	Spiral rotation number (rpm)		130	130	130	130	130	240	260
	Condition of molding	Temperature cylinder (℃)		250	260	Spiral rotation number (rpm)		130	130	130	130	130	250	240	260
The mould temperature (℃)		Temperature cylinder (℃)		250	260	240	240	240	240	240			250	240	260
The mould temperature (℃)		Spiral rotation number (rpm)		15	16	240	240	240	240	240	14	13	16
Draw speed (m/min)		Spiral rotation number (rpm)		15	16	1.4	1.4	1.4	1.4	1.4	14	13	16

Table 4

Comparative example				1	2	3	4	Reference example 1
Comparative example				1	2	3	4	Reference example 1	Electrical characteristics	SR (100V) (mean value) (Ω)			1.00×10 ¹⁰	5.00×10 ¹⁰	5.00×10 ¹⁰	5.00×10 ¹⁰	3.00×10 ¹¹
SR (100V) uneven (MAX/MIN)			4	3	3	3	2			SR (100V) (mean value) (Ω)			1.00×10 ¹⁰	5.00×10 ¹⁰	5.00×10 ¹⁰	5.00×10 ¹⁰	3.00×10 ¹¹
SR (100V) uneven (MAX/MIN)			4	3	3	3	2	SR (500V) (mean value) (Ω)			1.00×10 ⁸	3.00×10 ⁸	3.00×10 ⁸	3.00×10 ⁸	1.00×10 ¹¹
SR(100V)/SR(500V)			100	160	160	160	3	SR (500V) (mean value) (Ω)			1.00×10 ⁸	3.00×10 ⁸	3.00×10 ⁸	3.00×10 ⁸	1.00×10 ¹¹
SR(100V)/SR(500V)			100	160	160	160	3	VR (100V) (mean value) (Ω)			3.00×10 ¹¹	3.00×10 ¹¹	3.00×10 ¹¹	3.00×10 ¹¹	5.00×10 ¹⁰
VR (100V) uneven (MAX/MIN)			8	8	8	8	3	VR (100V) (mean value) (Ω)			3.00×10 ¹¹	3.00×10 ¹¹	3.00×10 ¹¹	3.00×10 ¹¹	5.00×10 ¹⁰
VR (100V) uneven (MAX/MIN)			8	8	8	8	3	VR (250V) (mean value) (Ω)			5.00×10 ⁸	1.0×10 ⁹	5.00×10 ⁸	3.00×10 ⁸	5.00×10 ⁹
VR(100V)/VR(250V)			600	300	600	1000	10	VR (250V) (mean value) (Ω)			5.00×10 ⁸	1.0×10 ⁹	5.00×10 ⁸	3.00×10 ⁸	5.00×10 ⁹
VR(100V)/VR(250V)			600	300	600	1000	10	The environmental change rate		Surface resistivity	10	8	10	10	3
Specific insulation	30	30	20	30	8					Surface resistivity	10	8	10	10	3
Specific insulation	30	30	20	30	8	Mechanical property	The modulus of elasticity in direct stress (MPa)			1300	1800	860	400	2400
Yield point strength (MPa)			35	46	30		The modulus of elasticity in direct stress (MPa)			1300	1800	860	400	2400	25	63
Yield point strength (MPa)			35	46	30		Tension failure elongation (%)			175	17	414	700≤	1.5	25	63
Folding resistance (inferior)			※	30,000 times	※		Tension failure elongation (%)			175	17	414	700≤	1.5	※	80,000 times
Folding resistance (inferior)			※	30,000 times	※		Shrinkage factor (%)			0.13	0.12	0.15	0.2≤	0.08	※	80,000 times
Character of surface	With the contact angle of water (°)			65	70		Shrinkage factor (%)			0.13	0.12	0.15	0.2≤	0.08	60	58	83
	With the contact angle of water (°)			65	70	Surfaceness	Ra(μm)		0.18	0.15	0.2	0.3	0.13		60	58	83
	Rmax(μm)		2	1.9	2.2		Ra(μm)		0.18	0.15	0.2	0.3	0.13	2.2	1.7
	Rmax(μm)		2	1.9	2.2		Rz(μm)		1.3	1.8	1.8	1.5	1	2.2	1.7
	Picture appraisal	Image (coming off)			○		Rz(μm)		1.3	1.8	1.8	1.5	1	△	○	○	△
Image shift					○	○	○	△	×	○				△	○	○	△
Image shift			The primary transfer characteristic			○	○	△	×	○	○	○	○	○	△
The secondary transfer printing characteristic			The primary transfer characteristic			Leak				△	○	○	○	○	△

※ does not rupture for 100,000 times

Can be clear and definite by table 2 and table 4, if according to present embodiment, the change of the resistivity that can provide the voltage-dependent of resistivity little, be caused by the temperature humidity environment is little, resistance to bend(ing) and drug resistance and compact dimensions excellent in stability, and under all environment of low temperature and low humidity～hot and humid, use the endless belt for all image processing systems that all can obtain high picture element with paper from concavo-convex big paper to level and smooth paper.

＜embodiment 9～18, comparative example 5～7, reference example 2 〉

These examples are the examples that are used to illustrate the invention of the 3rd main points.

Embodiment 9～12

Such as table 5 record, the polyester-polyester elastic body " ペ Le プレ Application S3001 (trade name) " of long-pending (strain) manufacturing spins as thermoplastic elastomer in use Japan, uses clock to spin and closes fibre " 128 (trade name) " as thermoplastic resin (mismatching thermoplastic resin in embodiment 9).Add the temper of this thermoplastic elastomer of hot milling, thermoplastic resin and sequestrant, tackifier and carbon black, obtain material granule.This moment to add the hot milling condition as shown in table 5, regulate resin temperature and the hold-up time in mixing roll, and regulate mixing condition so that when the reaction in mixing roll suppressed, resistance was semiconductor regions.This material granule of extrusion molding is made the endless belt.The endless belt can obtain the characteristic of the fine wrinkle tack excellence of anti-roller arbitrarily.Mainly creating conditions of this moment is shown in table 5.

In addition, any endless belt, surface resistivity SR (100V) mean value is 1 * 10 ¹¹Ω/～7 * 10 ¹¹Ω/, specific insulation VR (100V) mean value is 8 * 10 ¹⁰Ω cm～9 * 10 ¹²Ω cm, the voltage-dependent SR (100V) of the 100V～500V of surface resistivity/SR (500V) is 2.7～6.7, in 1 order of magnitude (10 times), the voltage-dependent VR (100V) of the 100V～250V of specific insulation/VR (250V) is 10～23.1, in 2 orders of magnitude (100 times), obtain good non-voltage-dependent.Various characteristics is shown in Table 6.

With these bands when being installed in the image processing system, can obtain the few preferable image of literal deinking among both in primary transfer, secondary transfer printing as intermediate transfer belt as Fig. 1.

In addition, few with the changes in resistance that the HH condition/the LL condition is represented even crackle does not take place yet in 200,000 of outputs under this state, the resistance inequality is also few.In addition, almost do not confirm the influence that the fine wrinkle of roller brings image.

Embodiment 13～15

Except thermoplastic resin being changed to the PBT (" ノバデュラ Application 5040ZS (trade name) " that the エ of Mitsubishi Application ジニアリ Application グプラスチッ Network ス (strain) makes) that contains polymerization catalyst, and adjustment thermoplastic resin and the match ratio of thermoplastic elastomer and the use level (in embodiment 13,14, not adding tackifier) of tackifier, cooperate simultaneously beyond the polymerization catalyst, obtain the endless belt similarly to Example 12.Can distinguish that though present embodiment 13～15 also can obtain the endless belt of the fine wrinkle of anti-roller tack excellence, embodiment 13,14 exists folding number to reduce the tendency that the fine wrinkle of anti-roller tack also reduces because the ratio of thermoplastic resin becomes more.When being installed in this endless belt in the image processing system, can obtain preferable image.This moment mainly create conditions and various characteristics is shown in table 5～8.

Embodiment 16～18

Except the kind of change thermoplastic elastomer, obtain the endless belt similarly to Example 15.Can distinguish that in present embodiment 16～18, though also can obtain the also excellent endless belt of outward appearance excellence, the fine wrinkle of anti-roller tack, because the fusing point of thermoplastic elastomer uprises, the fine wrinkle of anti-roller tack has the tendency of deterioration.When being installed in this endless belt in the image processing system, can obtain preferable image.This moment mainly create conditions and various characteristics is shown in table 7 and the table 8.

Reference example 2

Except the ratio embodiment 14 with thermoplastic elastomer (the polyester-polyester elastic body " ペ Le プレ Application S3001 (trade name) " that Japan is spun long-pending (strain) makes) reduces 5% again, obtain the endless belt similarly to Example 13.Mainly creating conditions of this moment is shown in table 9.

In reference example 2, though surfaceness is good, the fine wrinkle of anti-roller tack is poor slightly, and it is difficult obtaining long-time preferable image.Various characteristics is shown in table 10.

Comparative example 5～7

Except use with aromatic polyester as hard segment, with aliphatic polyester as the polymkeric substance of the pet copolyester type of soft chain segment as thermoplastic elastomer, in addition, " ノバデュラ Application 5010 (trade names) " of using the エ of Mitsubishi Application ジニアリ Application グプラスチッ Network ス (strain) manufacturing are as thermoplastic resin, change the cooperation ratio of thermoplastic elastomer and thermoplastic resin, and do not add beyond the polymerization catalyst, obtain the endless belt similarly to Example 13.Mainly creating conditions of this moment is shown in table 9.

In comparative example, any fine wrinkle of anti-roller tack is all poor, thereby the kind that can distinguish thermoplastic elastomer is brought influence to the fine wrinkle of anti-roller tack.In addition, the voltage-dependent of surface resistivity and specific insulation is bigger than embodiment 9～18 and reference example 2.Can infer this be because, because viscosity and the elastomeric viscosity of PBT are improper, and the dispersion heterogeneity of the carbon black when mixing, the orientation the during moulding of endless belt disperses to bring influence to the carbon of outer surface and center section, disperses thereby the thickness direction in the endless belt has formed inhomogenous carbon.Various characteristics is shown in table 10.

Table 5

Embodiment					9	10	11	12	13
Embodiment					9	10	11	12	13	Thermoplastic elastomer		S3001	Weight %		100	85	70	50	30
S2001	Weight %		-	-	-	-	-					S3001	Weight %		100	85	70	50	30
S2001	Weight %		-	-	-	-	-	S1001	Weight %			-	-	-	-	-
S6001	Weight %		-	-	-	-	-	S1001	Weight %			-	-	-	-	-
S6001	Weight %		-	-	-	-	-	P150B	Weight %			-	-	-	-	-
Thermoplastic resin		Clock spins 128	Weight %		0	15	30	P150B	Weight %			-	-	-	-	-	50	-
		Clock spins 128	Weight %		0	15	30	5040ZS	Weight %		-	-	-	-	70		50	-
		5010	Weight %		-	-	-	5040ZS	Weight %		-	-	-	-	70	-	-
		5010	Weight %		-	-	-	Polymerization catalyst		Ti concentration	ppm		-	-	-	-	-	-	80
Mg concentration	ppm		-	-	-	-	40			Ti concentration	ppm		-	-	-			-	80
Mg concentration	ppm		-	-	-	-	40			Sequestrant		PEPQ	Weight portion		0.3	0.3	0.3	0.3	0.3
Tackifier		A4400	Weight portion		1.5	1.5	1.0	1.0	0.0	Sequestrant		PEPQ	Weight portion		0.3	0.3	0.3	0.3	0.3
Tackifier		A4400	Weight portion		1.5	1.5	1.0	1.0	0.0	Carbon black			Weight portion		14	14	14	15	15
The MFR of thermoplastic resin (240 ℃ of 2.16kg loadings)					22	22	22	22	22	Carbon black			Weight portion		14	14	14	15	15
The MFR of thermoplastic resin (240 ℃ of 2.16kg loadings)					22	22	22	22	22	The MFR of thermoplastic resin					-	7	7	7	4
The MFR of moulding material					9	7	5	4	4	The MFR of thermoplastic resin					-	7	7	7	4
The MFR of moulding material					9	7	5	4	4	Material adds the hot milling condition	Temperature cylinder			℃	240	245	245	250	250
The mould temperature			℃	240	240	240	240	240			Temperature cylinder			℃	240	245	245	250	250
The mould temperature			℃	240	240	240	240	240	The spiral rotation number			rpm	130	130	130	130	130
The band condition of molding	Temperature cylinder			℃	245	250	250	250	The spiral rotation number			rpm	130	130	130	130	130	260
	Temperature cylinder			℃	245	250	250	250	The mould temperature			℃	240	240	240	240	240	260
	The spiral rotation number			rpm	15	15	15	15	The mould temperature			℃	240	240	240	240	240	15
	The spiral rotation number			rpm	15	15	15	15	Draw speed			m/min	1.4	1.4	1.4	1.4	1.4	15

Table 6

Embodiment				9	10	11	12	13
Embodiment				9	10	11	12	13	Thickness			μm	150	150	150	150	150
The modulus of elasticity in direct stress			MPa	500	700	900	1300	1800	Thickness			μm	150	150	150	150	150
The modulus of elasticity in direct stress			MPa	500	700	900	1300	1800	Shrinkage factor			％	0.1	0.1	0.1	0.1	0.1
Girth is poor			mm	0.18	0.13	0.1	0.1	0.07	Shrinkage factor			％	0.1	0.1	0.1	0.1	0.1
Girth is poor			mm	0.18	0.13	0.1	0.1	0.07	Resistance to bend(ing) (folding number)			Ten thousand times	More than 10 or 10	More than 10 or 10	More than 10 or 10	More than 10 or 10	8
Surface resistivity	SR(250V)max/min			5	4	4	3	3	Resistance to bend(ing) (folding number)			Ten thousand times	More than 10 or 10	More than 10 or 10	More than 10 or 10	More than 10 or 10	8
	SR(250V)max/min			5	4	4	3	3	SR(100V)		Ω/□(×10 ⁹)	450	200	100	700	100
	SR(250V)		Ω/□(×10 ⁹)	190	60.0	50.0	430	48.0	SR(100V)		Ω/□(×10 ⁹)	450	200	100	700	100
	SR(250V)		Ω/□(×10 ⁹)	190	60.0	50.0	430	48.0	SR(500V)		Ω/□(×10 ⁹)	89.0	30.0	30.0	260	30.0
	SR(1000V)		Ω/□(×10 ⁹)	42.0	10.0	15.0	130	15.0	SR(500V)		Ω/□(×10 ⁹)	89.0	30.0	30.0	260	30.0
	SR(1000V)		Ω/□(×10 ⁹)	42.0	10.0	15.0	130	15.0	Specific insulation	VR(250V)max/min			8	7	7	8	7
VR(100V)		Ωcm(×10 ⁹)	9000	900	80.0	130	100			VR(250V)max/min			8	7	7	8	7
VR(100V)		Ωcm(×10 ⁹)	9000	900	80.0	130	100	VR(250V)		Ωcm(×10 ⁹)	390	45.0	8.00	7.90	10.0
VR(500V)		Ωcm(×10 ⁹)	14.0	-	-	-	0.800	VR(250V)		Ωcm(×10 ⁹)	390	45.0	8.00	7.90	10.0
VR(500V)		Ωcm(×10 ⁹)	14.0	-	-	-	0.800	The resistivity ratio	SR(100V)/SR(500V)			5.1	6.7	3.3	2.7	3.3
VR(100V)/VR(250V)			23.1	20.0	10.0	16.5	10.0		SR(100V)/SR(500V)			5.1	6.7	3.3	2.7	3.3
VR(100V)/VR(250V)			23.1	20.0	10.0	16.5	10.0		The environmental change rate	Surface resistivity			4.0	4.0	4.0	3.0	3.0
Specific insulation			8.0	8.0	8.0	7.0	7.0			Surface resistivity			4.0	4.0	4.0	3.0	3.0
Specific insulation			8.0	8.0	8.0	7.0	7.0	The fine wrinkle of anti-roller tack			％	41	44	44	43	33
Contact angle with water			°	60	65	65	70	The fine wrinkle of anti-roller tack			％	41	44	44	43	33	75
Contact angle with water			°	60	65	65	70	Surfaceness		Ra	μm	0.12	0.18	0.13	0.13	0.09	75
Ry	μm	1.8	1.7	1.7	1.7	1.8				Ra	μm	0.12	0.18	0.13	0.13	0.09
Ry	μm	1.8	1.7	1.7	1.7	1.8	Rz			μm	0.9	1.0	0.9	0.9	0.9

Table 7

Embodiment				14	15	16	17	18
Embodiment				14	15	16	17	18	Thermoplastic elastomer		S3001	Weight %	20	50	-	-	-
S2001	Weight %	-	-	50	-	-					S3001	Weight %	20	50	-	-	-
S2001	Weight %	-	-	50	-	-	S1001	Weight %			-	-	-	50	-
S6001	Weight %	-	-	-	-	50	S1001	Weight %			-	-	-	50	-
S6001	Weight %	-	-	-	-	50	P150B	Weight %			-	-	-	-	-
Thermoplastic resin		Clock spins 128	Weight %	-	-	-	P150B	Weight %			-	-	-	-	-	-	-
		Clock spins 128	Weight %	-	-	-	5040ZS	Weight %	80	50	50	50	50			-	-
		5010	Weight %	-	-	-	5040ZS	Weight %	80	50	50	50	50	-	-
		5010	Weight %	-	-	-	Polymerization catalyst		Ti concentration	ppm	80	80	80	-	-	80	80
Mg concentration	ppm	40	40	40	40	40			Ti concentration	ppm	80	80	80			80	80
Mg concentration	ppm	40	40	40	40	40			Sequestrant		PEPQ	Weight portion	0.3	0.3	0.3	0.3	0.3
Tackifier		A4400	Weight portion	0.0	0.5	0.5	0.5	0.5	Sequestrant		PEPQ	Weight portion	0.3	0.3	0.3	0.3	0.3
Tackifier		A4400	Weight portion	0.0	0.5	0.5	0.5	0.5	Carbon black			Weight portion	15	15	15	15	15
The MFR of thermoplastic resin (240 ℃ of 2.16kg loadings)				22	22	23	23	23	Carbon black			Weight portion	15	15	15	15	15
The MFR of thermoplastic resin (240 ℃ of 2.16kg loadings)				22	22	23	23	23	The MFR of thermoplastic resin				4	4	4	4	4
The MFR of moulding material				4	4	4	3	3	The MFR of thermoplastic resin				4	4	4	4	4
The MFR of moulding material				4	4	4	3	3	Material adds the hot milling condition	Temperature cylinder		℃	250	250	250	250	250
The mould temperature		℃	240	240	240	240	240			Temperature cylinder		℃	250	250	250	250	250
The mould temperature		℃	240	240	240	240	240	The spiral rotation number		rpm	130	130	130	130	130
The band condition of molding	Temperature cylinder		℃	250	250	250	250	The spiral rotation number		rpm	130	130	130	130	130	250
	Temperature cylinder		℃	250	250	250	250	The mould temperature		℃	240	240	240	240	240	250
	The spiral rotation number		rpm	15	15	15	15	The mould temperature		℃	240	240	240	240	240	15
	The spiral rotation number		rpm	15	15	15	15	Draw speed		m/min	1.4	1.4	1.4	1.4	1.4	15

Table 8

Embodiment				14	15	16	17	18
Embodiment				14	15	16	17	18	Thickness			μm	150	150	150	150	150
The modulus of elasticity in direct stress			MPa	2200	1300	1100	600	2000	Thickness			μm	150	150	150	150	150
The modulus of elasticity in direct stress			MPa	2200	1300	1100	600	2000	Shrinkage factor			％	0.1	0.1	0.1	0.1	0.1
Girth is poor			mm	0.08	0.1	0.1	0.1	0.1	Shrinkage factor			％	0.1	0.1	0.1	0.1	0.1
Girth is poor			mm	0.08	0.1	0.1	0.1	0.1	Resistance to bend(ing) (folding number)			Ten thousand times	5	More than 10 or 10	More than 10 or 10	More than 10 or 10	7
Surface resistivity	SR(250V)max/min			5	3	4	4	4	Resistance to bend(ing) (folding number)			Ten thousand times	5	More than 10 or 10	More than 10 or 10	More than 10 or 10	7
	SR(250V)max/min			5	3	4	4	4	SR(100V)		Ω/□(×10 ⁹)	200	100	100	100	100
	SR(250V)		Ω/□(×10 ⁹)	50.0	32.0	60.0	40.0	60.0	SR(100V)		Ω/□(×10 ⁹)	200	100	100	100	100
	SR(250V)		Ω/□(×10 ⁹)	50.0	32.0	60.0	40.0	60.0	SR(500V)		Ω/□(×10 ⁹)	40.0	20.0	20.0	20.0	30.0
	SR(1000V)		Ω/□(×10 ⁹)	20.0	9.80	10.0	10.0	20.0	SR(500V)		Ω/□(×10 ⁹)	40.0	20.0	20.0	20.0	30.0
	SR(1000V)		Ω/□(×10 ⁹)	20.0	9.80	10.0	10.0	20.0	Specific insulation	VR(250V)max/min			8	7	8	8	8
VR(100V)		Ωcm(×10 ⁹)	200	430	500	500	500			VR(250V)max/min			8	7	8	8	8
VR(100V)		Ωcm(×10 ⁹)	200	430	500	500	500	VR(250V)		Ωcm(×10 ⁹)	20.0	13.0	20.0	20.0	20.0
VR(500V)		Ωcm(×10 ⁹)	1.00	-	-	-	-	VR(250V)		Ωcm(×10 ⁹)	20.0	13.0	20.0	20.0	20.0
VR(500V)		Ωcm(×10 ⁹)	1.00	-	-	-	-	The resistivity ratio	SR(100V)/SR(500V)			5.0	5.0	5.0	5.0	3.3
VR(100V)/VR(250V)			10.0	33.1	25.0	25.0	25.0		SR(100V)/SR(500V)			5.0	5.0	5.0	5.0	3.3
VR(100V)/VR(250V)			10.0	33.1	25.0	25.0	25.0		The environmental change rate	Surface resistivity			4.0	4.0	4.0	4.0	4.0
Specific insulation			7.0	8.0	8.0	8.0	8.0			Surface resistivity			4.0	4.0	4.0	4.0	4.0
Specific insulation			7.0	8.0	8.0	8.0	8.0	The fine wrinkle of anti-roller tack			％		31	41	45	34	31
Contact angle with water			°	76	70	70	70	The fine wrinkle of anti-roller tack			％		31	41	45	34	31	70
Contact angle with water			°	76	70	70	70	Surfaceness		Ra	μm	0.12	0.12	0.11	0.11	0.13		70
Ry	μm	1.8	1.8	1.9	1.8	1.9				Ra	μm	0.12	0.12	0.11	0.11	0.13
Ry	μm	1.8	1.8	1.9	1.8	1.9	Rz			μm	1	0.9	1	1	1.3

Table 9

Comparative example				Reference example 2	5	6	7
Comparative example				Reference example 2	5	6	7	Thermoplastic elastomer		S3001	Weight %	5	-	-	-
S2001	Weight %	-	-	-	-					S3001	Weight %	5	-	-	-
S2001	Weight %	-	-	-	-	S1001	Weight %			-	-	-	-
S6001	Weight %	-	-	-	-	S1001	Weight %			-	-	-	-
S6001	Weight %	-	-	-	-	P150B	Weight %			-	12	50	60
Thermoplastic resin		Clock spins 128	Weight %	-	-	P150B	Weight %			-	12	50	60	-	-
		Clock spins 128	Weight %	-	-	5040ZS	Weight %	95	-	-	-			-	-
		5010	Weight %	-	88	5040ZS	Weight %	95	-	-	-	50	40
		5010	Weight %	-	88	Polymerization catalyst		Ti concentration	ppm	80	-	50	40	-	-
Mg concentration	ppm	40	-	-	-			Ti concentration	ppm	80	-			-	-
Mg concentration	ppm	40	-	-	-			Sequestrant		PEPQ	Weight portion	0.3	0.3	0.3	0.3
Tackifier		A4400	Weight portion	0.5	0.0	0.0	0.0	Sequestrant		PEPQ	Weight portion	0.3	0.3	0.3	0.3
Tackifier		A4400	Weight portion	0.5	0.0	0.0	0.0	Carbon black			Weight portion	15	12	12	12
The MFR of thermoplastic resin (240 ℃ of 2.16kg loadings)				22	20	20	20	Carbon black			Weight portion	15	12	12	12
The MFR of thermoplastic resin (240 ℃ of 2.16kg loadings)				22	20	20	20	The MFR of thermoplastic resin				4	15	15	15
The MFR of moulding material				3	16	16	16	The MFR of thermoplastic resin				4	15	15	15
The MFR of moulding material				3	16	16	16	Material adds the hot milling condition	Temperature cylinder		℃	250	250	250	250
The mould temperature		℃	240	240	240	240			Temperature cylinder		℃	250	250	250	250
The mould temperature		℃	240	240	240	240	The spiral rotation number		rpm	130	130	130	130
The band condition of molding	Temperature cylinder		℃	250	250	250	The spiral rotation number		rpm	130	130	130	130	250
	Temperature cylinder		℃	250	250	250	The mould temperature		℃	240	240	240	240	250
	The spiral rotation number		rpm	15	15	15	The mould temperature		℃	240	240	240	240	15
	The spiral rotation number		rpm	15	15	15	Draw speed		m/min	1.4	1.4	1.4	1.4	15

Table 10

Comparative example				Reference example 2	5	6	7
Comparative example				Reference example 2	5	6	7	Thickness			μm	150	150	150	150
The modulus of elasticity in direct stress			Mpa	2400	2400	1200	1100	Thickness			μm	150	150	150	150
The modulus of elasticity in direct stress			Mpa	2400	2400	1200	1100	Shrinkage factor			％	0.1	0.1	0.1	0.1
Girth is poor			mm	0.1	0.1	0.1	0.1	Shrinkage factor			％	0.1	0.1	0.1	0.1
Girth is poor			mm	0.1	0.1	0.1	0.1	Resistance to bend(ing) (folding number)			Ten thousand times	3	5	More than 10 or 10	More than 10 or 10
Surface resistivity	SR(250V)max/min			5	5	5	5	Resistance to bend(ing) (folding number)			Ten thousand times	3	5	More than 10 or 10	More than 10 or 10
	SR(250V)max/min			5	5	5	5	SR(100V)		Ω/□(×10 ⁹)	100	100	200	500
	SR(250V)		Ω/□(×10 ⁹)	60.0	10.0	10.0	10.0	SR(100V)		Ω/□(×10 ⁹)	100	100	200	500
	SR(250V)		Ω/□(×10 ⁹)	60.0	10.0	10.0	10.0	SR(500V)		Ω/□(×10 ⁹)	30.0	4.00	3.00	5.00
	SR(1000V)		Ω/□(×10 ⁹)	10.0	-	-	-	SR(500V)		Ω/□(×10 ⁹)	30.0	4.00	3.00	5.00
	SR(1000V)		Ω/□(×10 ⁹)	10.0	-	-	-	Specific insulation	VR(250V)max/min			10	12	13	12
VR(100V)		Ωcm(×10 ⁹)	500	400	800	700			VR(250V)max/min			10	12	13	12
VR(100V)		Ωcm(×10 ⁹)	500	400	800	700	VR(250V)		Ωcm(×10 ⁹)	20.0	1.00	1.00	2.00
VR(500V)		Ωcm(×10 ⁹)	-	-	-	-	VR(250V)		Ωcm(×10 ⁹)	20.0	1.00	1.00	2.00
VR(500V)		Ωcm(×10 ⁹)	-	-	-	-	The resistivity ratio	SR(100V)/SR(500V)			3.3	25.0	66.7	100.0
VR(100V)/VR(250V)			25.0	400.0	800.0	350.0		SR(100V)/SR(500V)			3.3	25.0	66.7	100.0
VR(100V)/VR(250V)			25.0	400.0	800.0	350.0		The environmental change rate	Surface resistivity			7.0	7.0	7.0	7.0
Specific insulation			10.0	11.0	12.0	11.0			Surface resistivity			7.0	7.0	7.0	7.0
Specific insulation			10.0	11.0	12.0	11.0	The fine wrinkle of anti-roller tack			％	26	20	25	26
Contact angle with water			°	73	73	72	The fine wrinkle of anti-roller tack			％	26	20	25	26	70
Contact angle with water			°	73	73	72	Surfaceness		Ra	μm	0.13	0.12	0.12	0.12	70
Ry	μm	1.9	1.9	1.8	1.8				Ra	μm	0.13	0.12	0.12	0.12
Ry	μm	1.9	1.9	1.8	1.8	Rz			μm	1.3	1.3	1.2	1.3

In addition, the voltage-dependent that applies of the surface resistivity of each embodiment 9～18, comparative example 5～7 and reference example 2 is shown in Fig. 4, and the voltage-dependent that applies of specific insulation is shown in Fig. 5.In addition, the fine wrinkle of anti-roller tack (roller fine wrinkle recovery rate) is shown in Fig. 6.

By table 6,8 and 10 and Fig. 4～6 can be clear and definite, if according to embodiment 9～18, the change of the resistivity that can provide the voltage-dependent of the fine wrinkle of anti-roller tack excellence, resistivity little, be caused by the temperature humidity environment is little, resistance to bend(ing) and drug resistance and compact dimensions excellent in stability, and under all environment of low temperature and low humidity～hot and humid, use the endless belt for all image processing systems that all can obtain high picture element with paper from concavo-convex big paper to level and smooth paper.

Claims

1. an image processing system is used the endless belt, and this endless belt is the complex of molded thermoplastic elastic body and thermoplastic resin and conductive material and the image processing system that forms is used the endless belt, it is characterized in that, satisfies following formula (1), (2) and (3):

[several 1]

SR(100V)/SR(500V)＜VR(100V)/VR(250) (1)

SR(100V)/SR(500V)≤30 (2)

8≤VR(100V)/VR(250V)≤100 (3)

(in the formula, SR (100V) expression apply 10 second 100V voltage and the surface resistivity measured, SR (500V) expression apply 10 second 500V voltage and the surface resistivity measured, VR (100V) expression apply 10 second 100V the specific insulation of voltage when measuring, VR (250V) expression apply 10 second 250V the specific insulation of voltage when measuring).

2. an image processing system is used the endless belt, and this endless belt is the potpourri of molded thermoplastic elastic body and thermoplastic resin and conductive material and the image processing system that forms is used the endless belt, it is characterized in that,

3. an image processing system is used the endless belt, and this endless belt is that moulding contains the complex of the thermoplastic polymer composition of thermoplastic elastomer and conductive material and the image processing system that forms is used the endless belt, it is characterized in that,

4. use the endless belt according to the image processing system of claim 1 record, wherein, with respect to total amount 100 weight portions of thermoplastic elastomer and thermoplastic resin, the amount of conductive material is 0.1～30 weight portion.

5. use the endless belt according to the image processing system of claim 3 record, wherein, the crystalline melt point of thermoplastic elastomer is 190～220 ℃, the melt flow rate value of measuring according to JIS K7210 (240 ℃, 2.16kgf loading) is 10g/10 branch～18g/10 branch, and the thermoplastic polymer composition comprises thermoplastic elastomer and thermoplastic resin.

6. use the endless belt according to the image processing system of claim 1 or 3 records, wherein, it is the sticky polymers that 0.01～10g/10 divides that complex contains the melt flow rate value of measuring according to JIS K7210 (190 ℃, 2.16kgf loading), and, with respect to total amount 100 weight portions of thermoplastic elastomer and thermoplastic resin, its amount is 0.01～20 weight portion.

7. use the endless belt according to the image processing system of claim 2 or 6 records, wherein, sticky polymers is the tackifier with epoxide group.

8. use the endless belt according to the image processing system of claim 7 record, wherein, sticky polymers is the tackifier that contain the glytidyl methacrylate base.

9. use the endless belt according to the image processing system of claim 2 or 3 records, wherein, following formula (1), (2) and (3) are satisfied in the endless belt:

[several 2]

SR(100V)/SR(500V)＜VR(100V)/VR(250) (1)

SR(100V)/SR(500V)≤30 (2)

8≤VR(100V)/VR(250V)≤100 (3)

10. use the endless belt according to the image processing system of any one record in the claim 1～3, wherein, the modulus of elasticity in direct stress of endless belt is 300～2500MPa, and the contact angle of endless belt outside surface and water is more than 60 ° or 60 ° but 90 ° of less thaies, and surface roughness Ra is 0.05～0.3 μ m.

11. the image processing system according to any one record in the claim 1～3 is used the endless belt, wherein, the weight ratio of thermoplastic elastomer and thermoplastic resin (thermoplastic elastomer/thermoplastic resin) is 5/95～95/5.

12. the image processing system according to any one record in the claim 1～3 is used the endless belt, wherein, the weight ratio of thermoplastic elastomer and thermoplastic resin (thermoplastic elastomer/thermoplastic resin) is 10/90～90/10.

13. the image processing system according to any one record in the claim 1～3 is used the endless belt, wherein, the weight ratio of thermoplastic elastomer and thermoplastic resin (thermoplastic elastomer/thermoplastic resin) is 20/80～80/20.

14. the image processing system according to any one record in the claim 1～3 is used the endless belt, wherein, thermoplastic elastomer is the polyesters thermoplastic elastomer.

15. the image processing system according to any one record in the claim 1～3 is used the endless belt, wherein, thermoplastic resin is to be the resin of principal ingredient with the polyalkylene terephthalates.

16. the image processing system according to record in the claim 14 is used the endless belt, wherein, polyalkylene terephthalates is a polybutylene terephthalate.

17. the image processing system according to any one record in the claim 1～3 is used the endless belt, wherein, conductive material is a carbon black, and the DBP oil absorption of this carbon black is 50cm ³/ 100g～300cm ³/ 100g, specific surface area is 35～500m ²/ g, the amount of volatile matter is below 20% or 20%, average primary particle diameter is 20～50nm, and the amount of this carbon black is for satisfying following formula (4) and (5):

[several 3]

LogY≥-X+20 (4)

LogY≤-X+30 (5)

The amount of (in the formula, X represents the content (weight %) of the carbon black in the endless belt, and Y represents the endless belt is applied the 100V voltage in 10 seconds and the surface resistivity (Ω) measured).

18. the image processing system according to any one record in the claim 1～3 is used the endless belt, wherein, the melt flow rate value of measuring according to JIS K7210 (240 ℃, 2.16kgf loading) of the melt viscosity of complex is 0.1g/10 branch～25g/10 branch.

19. the image processing system according to any one record in the claim 1～3 is used the endless belt, wherein, while the endless belt is by adding that hot-extrudable melting tube cools off or cooling curing takes out and forms from annular die.

20. the image processing system according to claim 19 record is used the endless belt, wherein, annular die has a plurality of temperature control equipments at its circumferencial direction.

21. the image processing system according to claim 19 record use the endless belt, wherein, contacts the metal die that inboard or temperature outside with melting tube be adjusted to 30～150 ℃ and cools off melting tube.

22. the image processing system according to claim 19 or 21 records is used the endless belt, wherein, keeps drum to take out melting tube.

23. the image processing system according to any one record in the claim 1～3 is used the endless belt, wherein, the endless belt is intermediate transfer belt, conveying transfer belt, transfer-fixing band, photographic fixing band, photoreceptor belt or the development sleeve of seamless shape.

24. an image processing system is characterized in that, this device has the image processing system of any one record in the claim 1～23 with being with.

25. an image processing system is used the endless belt, it is characterized in that, satisfies following formula (1), (2) and (3):

[several 4]

SR(100V)/SR(500V)＜VR(100V)/VR(250) (1)

SR(100V)/SR(500V)≤30 (2)

8≤VR(100V)/VR(250V)≤100 (3)