CN101095086A - Conductive endless belt, method for producing same, and image forming apparatus employing same - Google Patents
Conductive endless belt, method for producing same, and image forming apparatus employing same Download PDFInfo
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- CN101095086A CN101095086A CN 200580045350 CN200580045350A CN101095086A CN 101095086 A CN101095086 A CN 101095086A CN 200580045350 CN200580045350 CN 200580045350 CN 200580045350 A CN200580045350 A CN 200580045350A CN 101095086 A CN101095086 A CN 101095086A
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Abstract
Provided are a conductive endless belt, a method of producing the same, and an image forming apparatus employing the same, the conductive endless belt having both desirable intended belt properties and surface properties, and being producible without known problems in terms of cost and quality. A conductive endless belt 100 is used as a transfer/transport conductive endless belt for a tandem system in which the conductive endless belt is circularly driven by a drive member so as to transport a recording medium held by the belt through electrostatic attraction to four differing image forming bodies, in which the toner images are sequentially transferred onto the recording medium. The conductive endless belt 100 is composed of a belt base 101 having thereon a resin layer 102 , the resin layer 102 containing an ultraviolet or electron beam curable resin. The resin layer 102 preferably contains a conductive agent, specifically carbon black.
Description
Technical field
The present invention relates in the electrostatic recording process in electro-photography apparatus such as duplicating machine, printer, electrostatic recording apparatus etc., employed conductive endless belt (following simply be called " belt "), its manufacture method and the image processing system that uses it when looking like to be transferred to toner on the recording mediums such as paper, wherein, this toner similarly is developer replenishing to be kept image forming surface such as body to the sub-image that maintains electrostatic latent image from the teeth outwards and form.
Background technology
All the time, in the electrostatic recording process in duplicating machine, printer etc., adopt following method: at first, make the surperficial uniform charged of photoreceptor (sub-image maintenance body), throw image by optical system to this photoreceptor, remove the electricity of illumination part branch band, thereby form electrostatic latent image, then, with toner supply to this electrostatic latent image, Electrostatic Absorption by toner forms the toner picture, it is transferred on the recording mediums such as paper, OHP, photographic paper, prints thus.
At this moment, in color printer or color copy machine, basically also print according to said process, but when colored printing, use the toner reproduction hue of magenta, yellow, cyan, 4 kinds of colors of black, therefore must have with regulation ratio these toners that superpose to obtain the operation of required tone, propose several modes in order to carry out this operation.
At first, the 1st, following multiple visualization way is arranged: same with the situation of carrying out single color printing, when to photoreceptor, making electrostatic latent image visual toner supply, the toner of above-mentioned magenta, yellow, cyan, the 4 kinds of colors of black of superposeing successively, thereby develop, on photoreceptor, form colored toner picture.By this mode, can more small-sized ground constituent apparatus, but have the problem that is very difficult to control gray scale, can't obtains high image quality in this mode.
The 2nd, following series system is arranged: 4 photosensitive drums are set, utilize the image development of the toner of magenta, yellow, cyan, black respectively with each drum, form toner that toner picture that toner picture, the yellow toner picture that produces, cyan that magenta produces produce and black produces thus as these 4 toner pictures, the photosensitive drums that will be formed with these toner pictures is lined up 1 row, each toner picture is transferred to successively on the recording mediums such as paper, on recording medium, superpose, reappear coloured image thus.Though this mode can obtain preferable image, 4 photosensitive drums and charged mechanism and the developing mechanism be located on each photosensitive drums become the state of lining up 1 row, and it is expensive that device maximizes and becomes.
Fig. 2 has shown the formation example of printing portion of the image processing system of series system.The print unit and 4 of the corresponding arrangements of each toner of yellow Y, magenta M, cyan C, black B that will constitute by photoconductor drum 1, charged roller 2, developer roll 3, developing blade 4, toner supplying roller 5 and cleaning balde 6, driven rolls (driver part) 9 circulations drive, and with toner be transferred to successively by transfer printing belt conveyor 10 carry with on the paper, form coloured image.Transfer printing belt conveyor charged and remove electricity respectively by charged roller 7 with remove electric roller 8 and carry out.In addition, be used for using adsorption roller (not shown) with the paper tape electricity on the belt with being adsorbed onto with paper.By these countermeasures, can suppress the generation of ozone.In adsorption roller, will take advantage of from carrying path with paper be downloaded on the transfer printing belt conveyor in, carry out Electrostatic Absorption to the transfer printing belt conveyor.In addition, separating with paper after the transfer printing is to weaken the absorption affinity of using paper and transfer printing belt conveyor by reducing transfer voltage, can only separate by curvature and carry out separating with paper.
The material of transfer printing belt conveyor 10 has resistive element and dielectric, and merits and demerits is respectively arranged.The resistive element belt keeps the time of electric charge short, and therefore when the transfer printing that is used for tandem type, the electric charge in transfer printing injects few, even if the rising of voltage is also smaller in the transfer printing of 4 looks continuous.In addition, ensuing when reusing in the transfer printing of paper electric charge be released, do not need to reply by cable the position.But,, therefore have the shortcomings such as influence that influence transfer efficiency, are vulnerable to use paper thickness and width owing to the variation of resistance value because of environment changes.
On the other hand, under the situation of dielectric belt, the electric charge that is injected can not discharge naturally, and the injection of electric charge, release all must electric control.But, owing to electric charge keeps with being stabilized, thus firm with the absorption of paper, can carry out high-precision paper and carry.Because specific inductive capacity is also little to the dependence of temperature humidity, so be the transfer process also more stable to environment.Shortcoming is that every repetition primary transfer all put aside electric charge on belt, so transfer voltage uprises.
The 3rd, also have following transfer drum mode: recording mediums such as paper are wound on the transfer drum, and with its rotation 4 times, every rotation is transferred to the magenta on the photoreceptor, yellow, cyan, black on the recording medium for 1 time successively, reappears coloured image.By this mode, can obtain higher image quality, but be under the situation of ground paper such as postcard when recording medium, be difficult to it is wound on the above-mentioned transfer drum problem that exists the recording medium kind to be restricted.
With respect to above-mentioned multiple visualization way, series system and transfer drum mode, as can obtaining good image quality, and device can not maximize especially, nor the mode that limited by the recording medium kind has proposed the intermediate transfer mode.
Promptly, this intermediate transfer mode is: be provided with by the drum of the toner picture on the temporary transient transfer printing maintenance photoreceptor, the intermediate transfer element that belt constitutes, configuration on every side in this intermediate transfer element has formed the toner picture that magenta produces, the yellow toner picture that produces, the toner picture of cyan generation and 4 photoreceptors of the toner picture that black produces, toner with 4 kinds of colors looks like to be transferred on the intermediate transfer element successively, on this intermediate transfer element, form coloured image thus, this coloured image is transferred on the recording mediums such as paper.Thereby, toner picture by the 4 kinds of colors that superpose is adjusted gray scale, therefore can obtain high image quality, and be not listed as owing to do not need as series system, photoreceptor to be lined up 1, so device can not maximize especially, nor recording medium need be wound on the drum, so the recording medium kind is also unrestricted.
As the device that forms coloured image by the intermediate transfer mode, example illustrates the image processing system that the intermediate transfer element of non junction band shape is used as intermediate transfer element in Fig. 3.
Among Fig. 3,11 is the photoreceptor of drum type, according to direction of arrow rotation among the figure.This photoreceptor 11 is by once charged device 12 is charged, then, eliminate the charged of exposed portion by image exposure 13, electrostatic latent image corresponding to the 1st color component is formed on this photoreceptor 11, and then electrostatic latent image develops by the 1st color magenta toner M by developer 41, and the 1st color magenta toner image is formed on the photoreceptor 11.Then, this toner image is transferred to that driven rolls (driver part) 30 circulation drives and on the intermediate transfer element 20 that limit and the circulation of photoreceptor 11 contact edges are rotated.At this moment, be to be undertaken by the primary transfer bias voltage that is applied to intermediate transfer element 20 by power supply 61 from photoreceptor 11 to the transfer printing of intermediate transfer element 20 in the bite of photoreceptor 11 and intermediate transfer element 20.After the 1st color magenta toner image is transferred on this intermediate transfer element 20, device 14 cleaning that is cleaned of the surface of above-mentioned photoreceptor 11, the development transfer operation of the 1st rotation of photoreceptor 11 is finished.Afterwards, photoreceptor rotation 3 times, developer 42～44 is once used in every rotation successively, on photoreceptor 11, form the 2nd color cyan toner image, the 3rd color yellow toner image, the 4th color black toner image successively, the every rotation of these toner images once is applied and is transferred on the intermediate transfer element 20, forms the synthetic color toner image corresponding to the target coloured image on intermediate transfer element 20.In addition, in the device of Fig. 3, developer 41～44 of photoreceptor 11 every rotations also replaces successively, carries out the development of magenta toner M, cyan toner C, Yellow toner Y, black toner B successively.
Then, butt transfer roll 25 on the intermediate transfer element 20 that has formed above-mentioned synthetic color toner image is fed to its bite from giving carton 19 with recording mediums such as paper 26.Meanwhile, by power supply 29 the secondary transfer printing bias voltage is applied to transfer roll 25, will synthesizes the color toner image and be transferred on the recording medium 26 from middle transfer member 20, heat fixer becomes final image.With the intermediate transfer element 20 of synthesizing after the color toner image is transferred to recording medium 26, remove the transfer printing remaining toner on surface by cleaning device 35, turn back to original state, the image of preparing next time forms.
In addition, made up the series connection intermediate transfer mode of series system and intermediate transfer mode in addition.Illustration goes out to use the series connection intermediate transfer element of non junction band shape to form the image processing system of the series connection intermediate transfer mode of coloured image among Fig. 4.
In illustrated device, along series connection intermediate transfer element 50, dispose successively respectively by yellow, magenta, cyan, black is with the 1st development section 54a～the 4th development section 54d of the latent electrostatic image developing on photoconductor drum 52a～52d, this series connection intermediate transfer element 50 is driven according to the circulation of the direction of arrow among the figure, transfer printing is formed on the toner picture of 4 kinds of colors on photoconductor drum 52a～52d of each development section 54a～54d successively, on this series connection intermediate transfer element 50, form colored toner picture thus, this toner is looked like to be transferred on the recording mediums 53 such as paper, print thus.
In addition, in the drawings, symbol 55 expressions are used to circulate and drive the driven roller or the jockey pulley of series connection intermediate transfer element 50, and symbol 56 is represented the recording medium transfer rollers, symbol 57 expression recording medium conveying devices, symbol 58 expressions are by the fixing device with the image fixing on the recording medium such as heating.In addition, symbol 59 expressions apply the supply unit (voltage bringing device) of voltage to series connection intermediate transfer element 50, this supply unit 59 in the situation neutralization that the toner picture is transferred to above-mentioned series connection intermediate transfer parts 50 from photosensitive drums 52a～52d from the situation that series connection intermediate transfer parts 50 are transferred on the recording medium 53, the voltage that applied of can reversing positive and negative.
In above-mentioned various image processing systems, as employed conductive endless belts such as transfer printing belt conveyor 10, intermediate transfer element 20, series connection intermediate transfer element 50, the main at present balata belt that uses the resin film belt of semiconduction and have the fibrous reinforcement body.Wherein, as the resin film belt, for example, in patent documentation 1, disclose the polymer alloy of thermoplastic poly naphthalenedicarboxylic acid alkane diol ester or itself and other thermoplastic resin or polymer blend conductive endless belt as base material.
In addition; a kind of electrophotography device semiconduction belt is disclosed in patent documentation 2; it is the belt with rhythmo structure; outside surface at the elastic belt base material of thin cylinder shape is formed with superficial layer; this superficial layer is a principal ingredient with multipolymer, fluorinated olefins based polymer, methyl methacrylate and other multipolymer that contains the monomer of (methyl) acryloyl group of fluorin modified crylic acid ester and other acrylate, and its tensile break strength, tension failure elongation and elastic modulus have the value of regulation respectively.
Patent documentation 1: TOHKEMY 2002-132053 communique (claims etc.)
Patent documentation 2: TOHKEMY 2004-157289 communique (claims etc.)
Summary of the invention
The problem that invention will solve
As above-mentioned patent documentation 2 records, for conductive endless belt, at present,, new layer is set on the belt matrix for belt characteristics and the character of surface that has expectation concurrently, make the rhythmo structure more than 2 layers.The belt of such rhythmo structure is as the records such as paragraph [0025] of patent documentation 2, usually, the belt matrix is impregnated in the coating of solvent system or water system or and sprays on the belt matrix surface this coating, carrying out dry solidification with heat or hot blast then forms, but, thereby produce the drying production line that needs length in batches because heat or heated-air drying coating need the long period.In addition, in this case, also there are the following problems: the Temperature Distribution in the drying production line, the deviation of air quantity have big influence to the electric conductivity of gained belt, surface state etc., therefore, can't stably obtain having desired high-precision belt.That is, carry out the belt that dry solidification obtains, aspect cost and quality aspect existing problems by using heat etc.
Therefore, the objective of the invention is to, the image processing system that a kind of conductive endless belt, its manufacture method is provided and uses it, wherein, the problem ground that this conductive endless belt has desired belt characteristics and character of surface concurrently and can not produce existing cost aspect and quality aspect is made.
The method of dealing with problems
In order to address the above problem, the inventor has carried out research in depth, finds by making the conductive endless belt that following structure is not produced the rhythmo structure of above-mentioned the problems of the prior art, until having finished the present invention.
That is, conductive endless belt of the present invention, it drives for being driven the parts circulation, and will be transported to by the recording medium that Electrostatic Absorption keeps on 4 kinds of image formings, and with each toner picture be transferred to successively the series system on this recording medium transfer printing, carry and to use conductive endless belt, it is characterized in that
Have resin bed on the belt matrix, this resin bed contains ultraviolet curing resin or electron ray curing type resin.
In addition, other conductive endless belt of the present invention, it is for being set between image forming and the recording medium, and be driven parts circulations and drive, and the temporary transient transfer printing of toner picture that will be formed on described image forming surface remains on the surface of self, and it is transferred to the conductive endless belt that the intermediate transfer element on the recording medium is used, it is characterized in that
Have resin bed on the belt matrix, this resin bed contains ultraviolet curing resin or electron ray curing type resin.
In addition, other conductive endless belt of the present invention, it is for being set between 4 kinds of image formings and the recording medium, and be driven parts circulations and drive, and the temporary transient transfer printing successively of the toner picture that will be formed on described 4 kinds of image forming surfaces remains on the surface of self, and it is transferred to the conductive endless belt that the series connection intermediate transfer element on the recording medium is used, it is characterized in that
Have resin bed on the belt matrix, this resin bed contains ultraviolet curing resin or electron ray curing type resin.
In the belt of the present invention, preferred aforementioned resin layer contains conductive agent, particularly carbon black, as aforementioned ultraviolet curing resin or electron ray curing type resin, can be fit to use the material that contains any one or both in fluorine and the silicon.
In addition, the maximum wavelength that aforementioned ultraviolet curing resin preferably comprises the UVA wavelength band is the above ultraviolet polymerization initiator of 400nm, more preferably also comprises the ultraviolet polymerization initiator of the not enough 400nm of maximum wavelength of UVA wavelength band in addition.And then aforementioned conductive agent preferably uses more than 2 kinds, and what be fit to is that the thickness of aforementioned resin layer is 1～30 μ m.
In addition, with respect to aforementioned ultraviolet curing resin of 100 weight portions or electron ray curing type resin, preferably in the scope of 1～30 weight portion, specific insulation is suitably for 10 to the content of aforementioned carbon black
2Ω cm～10
13In the scope of Ω cm.
In addition, the manufacture method of conductive endless belt of the present invention, it is characterized in that, it is the manufacture method of the conductive endless belt of the invention described above, wherein, apply the solvent-free coating liquid contain described ultraviolet curing resin or electron ray curing type resin on described belt matrix, the irradiation by ultraviolet ray or electron ray makes the coating liquid curing after this coatings, forms described resin bed.
And then image processing system of the present invention is characterized in that, it possesses the conductive endless belt of the invention described above.
The invention effect
According to the present invention, by using ultraviolet curing resin or electron ray curing type resin as the composition material that is arranged at the resin bed on the belt matrix, suitably control the exposure of ultraviolet ray or electron ray, thereby can solidify to form resin bed at short notice easily and reliably.Therefore, can not produce the problem of cost aspect, can stably obtain possessing the high-quality belt of desired belt characteristics and character of surface.
Description of drawings
Fig. 1 is the Width sectional view of the conductive endless belt of an embodiment of the present invention.
Fig. 2 is the skeleton diagram of demonstration as the image processing system of the series system of the use transfer printing belt conveyor of an example of image processing system of the present invention.
Fig. 3 is the skeleton diagram of demonstration as the intermediate transfer device of the use intermediate transfer element of other example of image processing system of the present invention.
Fig. 4 is the skeleton diagram of demonstration as the series connection intermediate transfer device of the use series connection intermediate transfer element of other example of image processing system of the present invention.
Symbol description:
1,11,52a-52d: photoconductor drum
2,7: charged roller
3: developer roll
4: developing blade
5: toner supplying roller
6: cleaning balde
8: remove electric roller
9,30,55: driven roller (driver part)
10: the transfer printing belt conveyor
12: once charged device
13: image exposure
14,35: cleaning device
19: give carton
20: intermediate transfer element
25: transfer roll
26,53: recording medium
29,61: power supply
41,42,43,44: developer
50: the series connection intermediate transfer element
54a～54d: the 1st development section～the 4th development section
56: the recording medium transfer roller
57: recording medium conveying device
58: fixing device
59: supply unit (voltage bringing device)
100: conductive endless belt
101: the belt matrix
102: resin bed
Embodiment
Below the preferred embodiment of the present invention is elaborated.
In conductive endless belt, there are jointed conductive endless belt and jointless conductive endless belt (so-called seamless belt) usually, can be any in the present invention.Preferred seamless belt.As mentioned above, conductive endless belt of the present invention can be used as the uses such as transfer member of series system, intermediate transfer mode and series connection intermediate transfer mode.
Conductive endless belt of the present invention for example is among Fig. 2 during the transfer printing belt conveyor shown in the reference marks 10, is driven by driven roller 9 driver parts such as grade, and toner is transferred on the recording medium that thereupon is transferred successively, forms coloured image.
In addition, conductive endless belt of the present invention for example is among Fig. 3 during the intermediate transfer element shown in the reference marks 20, circulation such as driven rolls 30 driver parts such as grade drives, and be configured between the recording mediums 26 such as photoconductor drum (sub-image maintenance body) 11 and paper, temporary transient thus transfer printing keeps being formed on the toner picture on above-mentioned photoconductor drum 11 surfaces, then it is transferred on the recording medium 26.In addition, the device of Fig. 3 as mentioned above, carries out colored printing by the intermediate transfer mode.
In addition, conductive endless belt of the present invention for example is among Fig. 4 during the series connection intermediate transfer element shown in the reference marks 50, be configured between the recording mediums 53 such as the development section 54a～54d that possesses photoconductor drum 52a～52d and paper, circulation such as driven rolls 55 driver parts such as grade drives, temporary transient transfer printing keeps being formed on the 4 colour toners pictures on each photoconductor drum 52a～52d surface, then it is transferred on the recording medium 53, thereby forms coloured image.
The partial cross section figure of a suitable example of expression conductive endless belt of the present invention among Fig. 1.Such as shown, belt 100 of the present invention has resin bed 102 on belt matrix 101, and resin bed 102 is characterised in that and contains ultraviolet curing resin or electron ray curing type resin.Owing to use ultraviolet curing resin or electron ray curing type resin-shaped resin layer 102,, can solidify to form resin bed 102 in the short time easily and reliably with comparing at present by the exposure of suitable control ultraviolet ray or electron ray.In addition, resin bed 102 of the present invention is one deck in illustrated embodiment, can also be with material, the mutual a plurality of layers of different compositions of rerum natura, and at this moment, wherein one deck is the above-mentioned layer that contains ultraviolet curing resin or electron ray curing type resin at least.
The ultraviolet curing resin that uses among the present invention is meant the resin that solidifies by the irradiation of the ultraviolet ray about wavelength 200～400nm (UV), is made up of prepolymer, monomer, ultraviolet polymerization initiator and adjuvant usually.Specifically, can enumerate for example vibrin, polyether resin, fluororesin, epoxy resin, ammonia resin, polyamide, acrylic resin, acrylic acid urethane resin, urethane resin, alkyd resin, phenolics, melmac, urea resin, silicone resin, polyvinyl butyral resin etc., can use these a kind or mix use more than 2 kinds.
In addition, can also use the modified resin that these resins is imported specific functional group, particularly for the mechanical strength that improves resin bed 102, anti-environmental characteristics and the preferred material that imports with cross-linked structure.
In the middle of the above-mentioned ultraviolet curing resin, particularly suitable is (methyl) acrylic ester ultraviolet curing resin that contains (methyl) acrylate oligomer.
As such (methyl) acrylate oligomer, can enumerate for example urethane system (methyl) acrylate oligomer, epoxy system (methyl) acrylate oligomer, ether system (methyl) acrylate oligomer, ester system (methyl) acrylate oligomer, polycarbonate system (methyl) acrylate oligomer etc.; Can enumerate (methyl) acrylate oligomer of fluorine system, silicone-based etc. in addition.
Above-mentioned (methyl) acrylate oligomer synthesizes with (methyl) acrylic acid reaction by the compounds such as addition product of polyglycol, polyoxy trimethylene glycol, polytetramethylene ether diol, bisphenol A type epoxy resin, phenol novolak type epoxy resin, polyvalent alcohol and 6-caprolactone; Perhaps polyisocyanate compound and (methyl) acrylate compounds urethaneization with hydroxyl are synthesized.
Urethane system (methyl) acrylate oligomer can be by obtaining polyvalent alcohol, isocyanate compound and (methyl) acrylate compounds urethaneization with hydroxyl.
In addition, example as epoxy system (methyl) acrylate oligomer, so long as have the compound and (methyl) acrylic acid reaction product of glycidyl, then all can arbitrarily, wherein, be preferably have phenyl ring, ring texture such as naphthalene nucleus, volution, bicyclopentadiene, tristane and have the compound and (methyl) acrylic acid reaction product of glycidyl.
And then ether system (methyl) acrylate oligomer, ester system's (methyl) acrylate oligomer and polycarbonate system (methyl) acrylate oligomer obtain by each self-corresponding polyvalent alcohol (polyether glycol, polyester polyol and polycarbonate polyvalent alcohol) and (methyl) acrylic acid reaction.
In the ultraviolet curing resin, as required, in order to adjust viscosity, contain reactive diluent with the two keys of polymerism.As such reactive diluent, can use structure that (methyl) acrylic acid combines with the compound of amino acid, hydroxyl by esterification and amidation process, for example simple function, 2 officials can or polyfunctional polymerizable compound etc.Per 100 weight portions (methyl) acrylate oligomer, these thinning agents use 10～200 weight portions usually.
In addition, ultraviolet curing resin contains to be useful on by ultraviolet ray irradiation and promotes the ultraviolet polymerization initiator that curing reaction begins.Be not particularly limited as this ultraviolet polymerization initiator, can use known material, particularly using charcoal is that conductive agent is during as the conductive agent in the resin bed 102, the ultraviolet ray of irradiation can't be that conductive agent arrives resin bed 102 inside by charcoal, might be able to not give full play to the function of ultraviolet polymerization initiator, curing reaction is progress not, therefore preferably uses the ultraviolet ray to the long wavelength that invades resin bed 102 inside easily to have the ultraviolet polymerization initiator of susceptibility.
Specifically, be fit to use the maximum wavelength of UVA wavelength band to be the ultraviolet polymerization initiator more than the 400nm.Has the ultraviolet polymerization initiator of absorption band as such the long wavelength; can use alpha-aminoacetophenone, acylphosphine oxide, thioxanthones, amine etc.; as these example more specifically; can enumerate two (2; 4; 6-trimethylbenzene formyl)-phenyl phosphine oxide, perhaps 2-methyl isophthalic acid-[4-(methyl mercapto) phenyl]-2-morpholino propane-1-ketone.
At this moment, as ultraviolet polymerization initiator, the ultraviolet polymerization initiator that preferably except above-mentioned substance, also contains the not enough 400nm of maximum wavelength of UVA wavelength band, thus, particularly when using charcoal to be conductive agent, be not only in resin bed 102 inside, at the near surface of resin bed 102, curing reaction also can make progress well.
Has the ultraviolet polymerization initiator of absorption band as such the short wavelength, can enumerate 2,2-dimethoxy-1,2-diphenylethane-1-ketone, 1-hydroxyl-cyclohexyl-phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-propane-1-ketone, 1-[4-(2-hydroxyl-oxethyl) phenyl] 2-hydroxy-2-methyl-1-propane-1-ketone, 2-methyl isophthalic acid-[4-phenyl]-2-morpholino propane-1-ketone etc.
As the combined amount of this ultraviolet polymerization initiator, for example per 100 weight portions (methyl) acrylate oligomer is preferably 0.1～10 weight portion.
In the resin bed 102, in order to promote the polyreaction of above-mentioned ultraviolet polymerization initiator, except mentioned component, can also to add alkylphosphines such as tertiary amines such as triethylamine, triethanolamine, triphenylphosphine as required in ultraviolet curing resin be photopolymerization promoter, be photopolymerization promoter etc. to thioethers such as thiodiglycols.When adding these compounds, per 100 weight portions (methyl) acrylate oligomer, its addition is the scope of preferred 0.01～10 weight portion usually.
In addition, electron ray curing type resin is meant the resin with following characteristic among the present invention,, does not contain crosslinking chemical, polymerization initiator, fracture assistant that is, even if do not use these auxiliary agents, also can carry out self-crosslinking by the energy that the electron ray irradiation produces.But in reality was made, also it doesn't matter for the mixed cross-linker cambium layer in the middle of these, and electron ray curing type resin of the present invention is not got rid of and cooperated these crosslinking chemicals etc.
As electron ray curing type resin, specifically, can enumerate for example vibrin, polyether resin, fluororesin, epoxy resin, amino resins, polyamide, acrylic resin, acrylic acid urethane resin, urethane resin, alkyd resin, phenolics, melmac, urea resin, silicone resin, polyvinyl butyral resin etc., can use these a kind or mix use more than 2 kinds.
In addition, can also use the modified resin that these resins is imported specific functional group, particularly for the mechanical strength that improves resin bed 102, anti-environmental characteristics and the preferred material that imports with cross-linked structure.
In the middle of the above-mentioned electron ray curing type resin, particularly suitable is (methyl) acrylic ester electron ray curing type resin that contains (methyl) acrylate oligomer.
As such (methyl) acrylate oligomer, can enumerate for example urethane system (methyl) acrylate oligomer, epoxy system (methyl) acrylate oligomer, ether system (methyl) acrylate oligomer, ester system (methyl) acrylate oligomer, polycarbonate system (methyl) acrylate oligomer etc.; Can enumerate (methyl) acrylate oligomer of fluorine system, silicone-based etc. in addition.
Above-mentioned (methyl) acrylate oligomer synthesizes with (methyl) acrylic acid reaction by the compounds such as addition product of polyglycol, polyoxy trimethylene glycol, polytetramethylene ether diol, bisphenol A type epoxy resin, phenol novolak type epoxy resin, polyvalent alcohol and 6-caprolactone, perhaps polyisocyanate compound and (methyl) acrylate compounds urethaneization with hydroxyl is synthesized.
Urethane system (methyl) acrylate oligomer can be by obtaining polyvalent alcohol, isocyanate compound and (methyl) acrylate compounds urethaneization with hydroxyl.
In addition, example as epoxy system (methyl) acrylate oligomer, so long as have the compound and (methyl) acrylic acid reaction product of glycidyl, then all can arbitrarily, wherein, be preferably have phenyl ring, ring texture such as naphthalene nucleus, volution, bicyclopentadiene, tristane and have the compound and (methyl) acrylic acid reaction product of glycidyl.
And then ether system (methyl) acrylate oligomer, ester system's (methyl) acrylate oligomer and polycarbonate system (methyl) acrylate oligomer obtain by each self-corresponding polyvalent alcohol (polyether glycol, polyester polyol and polycarbonate polyvalent alcohol) and (methyl) acrylic acid reaction.
In the electron ray curing type resin, as required, in order to adjust viscosity, contain reactive diluent with the two keys of polymerism.As such reactive diluent, can use structure that (methyl) acrylic acid combines with the compound of amino acid, hydroxyl by esterification and amidation process, for example simple function, 2 officials can or polyfunctional polymerizable compound etc.Preferred usually 10～200 weight portions that use of per 100 weight portions (methyl) acrylate oligomer, these thinning agents.
In addition, about being positioned at outermost resin bed 102 at least, the ultraviolet curing resin or the electron ray curing type resin that constitute this resin bed preferably contain any one or both in fluorine and the silicon.Can reduce the surface energy of outermost resin bed 102 thus, its result reduces the frictional resistance of belt surface, and can improve the toner release property, reduces the abrasion in long-time the use, improves permanance.
Raw material as fluorine-containing ultraviolet curing resin or electron ray curing type resin, preferably contain fluorochemicals with polymerizable carbon-carbon double bond, can only form by this fluorochemicals with polymerizable carbon-carbon double bond, in addition, the composition that can also be formed by the compound with polymerizable carbon-carbon double bond of the fluorochemicals with polymerizable carbon-carbon double bond and other kind is formed.
As the fluorochemicals with polymerizable carbon-carbon double bond, suitable is fluoroolefins class, fluorine (methyl) esters of acrylic acid.
As the fluoroolefins class, suitable is 1～all hydrogen atoms are replaced the fluoroolefins of the carbon number 2～12 that forms by fluorine, specifically, can illustration hexafluoropropylene [CF
3CF=CF
2, fluorine-containing rate 76 weight %], (perfluoro butyl) ethene [F (CF
2)
4CH=CH
2, fluorine-containing rate 69 weight %], (perfluoro hexyl) ethene [F (CF
2)
6CH=CH
2, fluorine-containing rate 71 weight %], (perfluoro capryl) ethene [F (CF
2)
8CH=CH
2, fluorine-containing rate 72 weight %], (perfluor decyl) ethene [F (CF
2)
10CH=CH
2, fluorine-containing rate 73 weight %], chlorotrifluoroethylene [CF
2=CFCl, fluorine-containing rate 49 weight %], 1-methoxy-2-perfluoro-2-methyl isophthalic acid-propylene [(CF
3)
2C=CFOCH
3, fluorine-containing rate 63 weight %], 1,4-divinyl octafluorobutane [(CF
2)
4(CH=CH
2)
2, fluorine-containing rate 60 weight %], 1,6-divinyl ten difluoro hexane [(CF
2)
6(CH=CH
2)
2, fluorine-containing rate 64 weight %], 1,8-divinyl ten hexafluoro octane [(CF
2)
8(CH=CH
2)
2, fluorine-containing rate 67 weight %].
Above-mentioned fluorochemicals with polymerizable carbon-carbon double bond is preferably the potpourri of monomer, oligomer or monomer and oligomer.Preferred 2 aggressiveness of oligomer～20 aggressiveness.
The compound with polymerizable carbon-carbon double bond of other kind that can mix with this fluorochemicals with polymerizable carbon-carbon double bond has no particular limits, and what be fit to is the potpourri of (methyl) acrylate monomer or oligomer or monomer and oligomer.
As this (methyl) acrylate monomer or oligomer, can enumerate for example monomer or the oligomer of urethane system (methyl) acrylate, epoxy system (methyl) acrylate, ether system (methyl) acrylate, ester system (methyl) acrylate, polycarbonate system (methyl) acrylate etc.; Can enumerate the monomer of silicone-based (methyl) acrylate or oligomer etc. in addition.
Above-mentioned (methyl) acrylate oligomer, compounds such as addition product by polyglycol, polyoxy trimethylene glycol, polytetramethylene ether diol, bisphenol A type epoxy resin, phenol novolak type epoxy resin, polyvalent alcohol and 6-caprolactone synthesize with (methyl) acrylic acid reaction, perhaps polyisocyanate compound and (methyl) acrylate compounds urethaneization with hydroxyl are synthesized.
Urethane system (methyl) acrylate oligomer can be by obtaining polyvalent alcohol, isocyanate compound and (methyl) acrylate compounds urethaneization with hydroxyl.
In addition, example as epoxy system (methyl) acrylate oligomer, so long as have the compound and (methyl) acrylic acid reaction product of glycidyl, then all can arbitrarily, wherein, be preferably have phenyl ring, ring texture such as naphthalene nucleus, volution, bicyclopentadiene, tristane and have the compound and (methyl) acrylic acid reaction product of glycidyl.
And then ether system (methyl) acrylate oligomer, ester system's (methyl) acrylate oligomer and polycarbonate system (methyl) acrylate oligomer obtain by each self-corresponding polyvalent alcohol (polyether glycol, polyester polyol and polycarbonate polyvalent alcohol) and (methyl) acrylic acid reaction.
In addition, as forming the siliceous ultraviolet curing resin or the raw material of electron ray curing type resin, preferably contain silicon-containing compound with polymerizable carbon-carbon double bond, can only form by this silicon-containing compound with polymerizable carbon-carbon double bond, in addition, the composition that can also be formed by the compound with polymerizable carbon-carbon double bond of the silicon-containing compound with polymerizable carbon-carbon double bond and other kind is formed.
As the silicon-containing compound with polymerizable carbon-carbon double bond, suitable is two terminal-reactive silicone oils, single terminal-reactive silicone oil, (methyl) acryloyloxyalkyl silanes.As reactive silicon oils, preferably import the material that (methyl) acryloyl group is arranged endways.
The object lesson that the present invention is fit to the silicon-containing compound of use is shown below.
The two terminal-reactive silicone oil (having the functional group shown in the following formula (1)) that SHIN-ETSU HANTOTAI's chemical industry (strain) shown in the following table 1 is made
Table 1
| Name of product | Viscosity (mm 2/s) | Functional group's equivalent (g/mol) |
| X-22- |
25 | 860 |
| X-22- |
55 | 1630 |
| X-22-164C | 90 | 2370 |
Single terminal-reactive silicone oil (having the structure shown in the following formula (2)) that SHIN-ETSU HANTOTAI's chemical industry (strain) shown in the following table 2 is made.
(in the above-mentioned formula (2), R
1Be methyl or butyl, R
2Be the functional group shown in the aforementioned formula (1))
Table 2
| Name of product | Viscosity (mm 2/s) | Functional group's equivalent (g/mol) |
| X-24-8201 | 25 | 2100 |
| X-22-174DX | 60 | 4600 |
| X-22-2426 | 180 | 12000 |
Dow Corning Toray Silicone Co shown in the following table 3, the acrylate modified silicone oil of two terminal methyl group (having the structure shown in following (3)) that .Ltd. makes.
Table 3
| Production number | Viscosity (cs/25 ℃) | Methacryl equivalent (g/mol) | Proportion (25 ℃) |
| BX16-152B | 40 | 1300 | 0.97 |
| BY16-152 | 85 | 2800 | 0.97 |
| BX2-152C | 330 | 5100 | 0.97 |
Dow Corning Toray Silicone Co shown in the following table 4, the acrylate modified silicone oil of single terminal methyl group (having the structure shown in following (4)) that .Ltd. makes.
Table 4
| Production number | Viscosity (cs/25 ℃) | Refractive index (25 ℃) | Proportion (25 ℃) |
| BX16- |
5 | 1.417 | 0.92 |
(methyl) acryloyloxyalkyl silanes that SHIN-ETSU HANTOTAI's chemical industry (strain) shown in the following table 5 is made (having the structure shown in the difference of following formula (5)～(11) successively).
Table 5
| Production number | The compound title |
| LS-2080 | 3-methacryloxypropyl dichloro methyl silane |
| LS-2826 | 3-acryloyl-oxy propyl group dimethoxy-methyl silane |
| LS-2827 | 3-acryloyl-oxy propyl trimethoxy silicane |
| LS-3375 | 3-methacryloxypropyl dimethoxy-methyl silane |
| LS-3380 | The 3-methyl allyl acyloxypropyl trimethoxysilane |
| LS-4548 | 3-methacryloxypropyl diethoxymethyl silane |
| LS-5118 | 3-methacryloxypropyl triethoxysilane |
These silicon-containing compounds can use a kind separately, also can mix more than 2 kinds and use, and also can use other not contain the compound with carbon-carbon double bond of silicon together.
In addition, these have the compound with carbon-carbon double bond that the silicon-containing compound of polymerizable carbon-carbon double bond and other do not contain silicon preferably with the form use of the potpourri of monomer, oligomer or monomer and oligomer.
The compound with polymerizable carbon-carbon double bond of other kind that can mix with this silicon-containing compound with polymerizable carbon-carbon double bond is not particularly limited, and what be fit to is the potpourri of (methyl) acrylate monomer or oligomer or monomer and oligomer.Preferred 2 aggressiveness of oligomer～20 aggressiveness.
Should (methyl) acrylate monomer or oligomer can enumerate the monomer of for example urethane system (methyl) acrylate, epoxy system (methyl) acrylate, ether system (methyl) acrylate, ester system (methyl) acrylate, polycarbonate system (methyl) acrylate etc. and fluorine system (methyl) acrylate or oligomer etc.
Above-mentioned (methyl) acrylate oligomer, compounds such as addition product by polyglycol, polyoxy trimethylene glycol, polytetramethylene ether diol, bisphenol A type epoxy resin, phenol novolak type epoxy resin, polyvalent alcohol and 6-caprolactone synthesize with (methyl) acrylic acid reaction, perhaps polyisocyanate compound and (methyl) acrylate compounds urethaneization with hydroxyl are synthesized.
Urethane system (methyl) acrylate oligomer can be by obtaining polyvalent alcohol, isocyanate compound and (methyl) acrylate compounds urethaneization with hydroxyl.
Example as epoxy system (methyl) acrylate oligomer, so long as have the compound and (methyl) acrylic acid reaction product of glycidyl, then all can arbitrarily, wherein, be preferably have phenyl ring, ring texture such as naphthalene nucleus, volution, bicyclopentadiene, tristane and have the compound and (methyl) acrylic acid reaction product of glycidyl.
And then ether system (methyl) acrylate oligomer, ester system's (methyl) acrylate oligomer and polycarbonate system (methyl) acrylate oligomer obtain by each self-corresponding polyvalent alcohol (polyether glycol, polyester polyol and polycarbonate polyvalent alcohol) and (methyl) acrylic acid reaction.
In addition, in resin bed 102, can add conductive agent with above-mentioned ultraviolet curing resin or electron ray curing type resin and control electric conductivity.This conductive agent is not particularly limited, and the preferred charcoal that uses a small amount of interpolation just can obtain high conductivity is a conductive agent.As this charcoal is conductive agent, and the ink that specifically can enumerate rubber grade carbon blacks such as Ketjen black, acetylene black, SAF, ISAF, HAF, FEF, GPF, SRF, FT, MT, oxidized black etc. is with carbon black, pyrolytic carbon black, graphite etc.Be more suitable for using carbon black.
When using ultraviolet curing resin, charcoal is that the combined amount of conductive agent is below 30 weight portions with respect to 100 weight portion ultraviolet curing resins, is preferably in the scope of for example 1～20 weight portion, particularly 1～10 weight portion, especially 2～5 weight portions.Wherein, when using carbon black, its content with respect to 100 weight portion ultraviolet curing resins suitable be in the scope of 1～30 weight portion.When the content of conductive agent is very few, can't guarantee sufficient electric conductivity, on the other hand, when the content of conductive agent is too much, resin bed 102 hardening, become fragile, in addition, significantly high conductionization may be sewed in making and using, and then, be in the situation of conductive agent at charcoal, the progress that also the produces curing reaction shortcoming such as insufficient that becomes, all not preferred.
In addition, when using electron ray curing type resin, charcoal is that the combined amount of conductive agent is below 100 weight portions with respect to 100 weight portion electron ray curing type resins, is preferably in the scope of for example 1～100 weight portion, particularly 1～80 weight portion, especially 10～50 weight portions.Wherein, when using carbon black, its content with respect to 100 weight portion electron ray curing type resins suitable be in the scope of 5～30 weight portions.When the content of conductive agent is very few, can't guarantee sufficient electric conductivity, on the other hand, when the content of conductive agent is too much, resin bed 102 hardening, become fragile, in addition, may sew in the feasible use of significantly high conductionization.
This conductive agent can also be mix to use more than 2 kinds, at this moment, can also stably show electric conductivity to the variation of the voltage that applied, the variation of environment.Specifically, can be that conductive agent is mixed together use for example with electronic conduction agent, ionic conductive agent and the charcoal beyond the carbon system.
Mix when using ionic conductive agent to be used as conductive agent, the combined amount of the ionic conductive agent in the resin bed 102 is preferably below 20 weight portions, is in particular in the scope of 0.01～20 weight portion, especially 1～10 weight portion with respect to 100 weight portion ultraviolet curing resins or electron ray curing type resin.
As ionic conductive agent, can enumerate for example tetraethyl ammonium, TBuA, dodecyl trimethyl ammoniums such as lauryl trimethyl ammonium, cetyltrimethyl ammonium, octadecyl trimethyl ammoniums such as stearyl trimethyl ammonium, benzyltrimethylammon.um, the perchlorate of ammoniums such as modified aliphatic dimethyl ethyl ammonium, chlorate, hydrochloride, bromate, iodate, hydrofluoboric acid salt, sulfate, alkyl sulfate, carboxylate, the organic ion conductive agent of sulfonate etc., lithium, sodium, calcium, the perchlorate of alkaline metal such as magnesium or earth alkali metal, chlorate, hydrochloride, bromate, iodate, hydrofluoboric acid salt, trifluoromethyl sulfate, inorganic ions conductive agents such as sulfonate.
In addition, as conductive agent, with electronic conduction agent and charcoal is that conductive agent is mixed together when using, with respect to 100 weight portion ultraviolet curing resins or electron ray curing type resin, the combined amount of the electronic conduction agent in the resin bed 102 is preferably below 100 weight portions, for example in the scope of 1～100 weight portion, particularly 1～80 weight portion, especially 10～50 weight portions.
As the electronic conduction agent beyond the charcoal system, can illustration the particulate of metal oxides such as ITO, tin oxide, titanium dioxide, zinc paste for example; The oxide of metals such as nickel, copper, silver, germanium; The transparent palpus crystalline substance that electric conductivity titanium dioxide palpus is brilliant, electric conductivity barium titanate palpus crystalline substance is such etc.
As the method that forms resin bed 102, what can be fit to use be following method: coating contains the coating liquid of the constituent of above-mentioned ultraviolet curing resin or electron ray curing type resin and conductive agent, other adjuvant on belt matrix 101, and the irradiation by ultraviolet ray or electron ray makes its curing.This coating liquid is preferably with solvent-free formation, and perhaps solvent that can volatility under the normal temperature is high is as solvent.By using such method, can save the required large-scale equipment and the space that are used for drying in the method for using heat or hot blast to carry out dry solidification and forming, and suppress drying process and control difficult caused film forming inequality, can form resin bed 102 with high precision.
As the method for this coating liquid of coating, can be according to circumstances from the infusion process of impregnated belts matrix coating liquid, spraying process, rolling method etc., suitably select to use.
As the light source that is used for irradiation ultraviolet radiation, can use any one of common employed mercury lamp, high-pressure sodium lamp, ultrahigh pressure mercury lamp, metal halide lamp, xenon lamp etc.The condition of ultraviolet ray irradiation is suitably selected to get final product according to kind, the coating weight of ultraviolet curing resin, and that be fit to is illumination 100～700mW/cm
2, accumulation light quantity 200～3000mJ/cm
2About.
The thickness of resin bed 102 is not particularly limited, and preferably is generally 1～30 μ m, particularly 2～20 μ m, especially about 3～10 μ m.Thickness is crossed when approaching, and the friction when using for a long time causes can't fully guaranteeing sometimes the chargeding performance of belt surface, on the other hand, when thickness was blocked up, the belt surface hardening brought damage to toner, the set of toner to image forming etc. takes place, and may produce problems such as image is bad.
Among the present invention, above-mentioned resin bed 102 is set on belt matrix 101, only this point is important.The composition of belt matrix 101 is not particularly limited.Substrate resin as belt matrix 101, can from existing material known, suitably select to use, specifically, can enumerate for example polyamide thermoplastic (PA), thermoplastic poly aromatic ester (PAR), thermoplastic poly acetal (POM), thermoplastic poly (ethylene naphthalate) (PEN) resin, thermoplastic poly naphthalenedicarboxylic acid alkane diol ester resins such as thermoplasticity PBN (PBN) resin, thermoplastic poly ethylene glycol terephthalate (PET) resin, thermoplastic poly terephthalic acid (TPA) alkane diol ester resins such as thermoplastic poly mutual-phenenyl two acid bromide two alcohol ester (PBT) resin etc.In addition, can also use any polymer alloy or polymer blend more than 2 kinds in the middle of these resins, in the middle of these resins any more than a kind or 2 kinds with other thermoplastic resin, particularly with the polymer alloy of thermoplastic elastomer or polymer blend etc.
Polyamide thermoplastic is one of resin that long ago just is used as the good material of abrasion performance, and its intensity and resistance to impact etc. are also excellent, can easily obtain on market.PA has some kinds, suitable especially commodity DAIAMID L2101, the DAIAMIDL1940 by name that commodity Rilsan AESN O TL by name that nylon 12 (below, be called " PA12 "), for example TORAY (strain) make or Daicel-Huls Ltd. make, the commodity 3024U by name that the emerging product of space portion (strain) is made etc. of using.PA12 compares with other PA, its excellent in dimensional stability when environmental change.In addition, also preferred PA6.By with the substrate resin of this polyamide thermoplastic, there is not the particularly conductive endless belt of crooked excellent in te pins of durability of resistance inequality and intensity thereby can make as belt matrix 101.In addition, as this PA12, its number-average molecular weight that is fit to is in 7000～100000, more preferably 13000～40000 the scope.
As the example that is fit in the polymer alloy of PA and thermoplastic elastomer, can enumerate the block copolymerization alloy of PA12 and thermoplastic polyether.Thus, except dimensional stability, the excellent results of the low-temperature characteristics that can also be improved.The polymer alloy of this PA12 and thermoplastic polyether also can obtain on market, for example, and the representational commodity DAIAMID X4442 by name that can enumerate Daicel-Huls Ltd. manufacturing etc.
In addition, as the thermoplastic elastomer in the polymer blend that can be suitable for PA, known Young modulus is 98000N/cm
2Below, be preferably 980～49000N/cm
2Polymkeric substance, can use the elastic body of polyesters, polyamide-based, polyethers, polyolefins, polyurethane kind, phenylethylene, acrylic compounds, polydienes etc.By mixing this thermoplastic elastomer, can increase folding number, improve permanance to crackle.The polymer blend of PA12 and thermoplastic elastomer also can obtain on market.For example can enumerate the commodity DAIAMID E1947 by name that Daicel-Huls Ltd. makes.
In addition, PA of the present invention and the thermoplastic elastomer mixing ratio in polymer alloy and polymer blend, when PA was PA12, suitable was with respect to 100 weight portion PA12, thermoplastic elastomer is below 100 weight portions.
The resistance to impact of thermoplastic poly aromatic ester and excellent in dimensional stability, and be the good engineering plastics of recovery of elasticity characteristic can easily obtain on market, for example, representationally can use Unitika, the U-100 that Ltd. makes etc.By with the base material of this PAR, can make the conductive endless belt that does not have the particularly crooked permanance of resistance inequality, intensity and creep resistance excellence and have high dimensional accuracy as conductive endless belt.
As the material that is fit in the polymer alloy of PAR and the polymer blend, can list polymer alloy with thermoplastic poly carbonic ether (PC) or thermoplastic poly ethylene glycol terephthalate (PET).The polymer alloy of this PAR and thermoplastic resin and polymer blend also can obtain on market, for example, representational can list as with the Unitika of the alloy of PC, the P-3001 that Ltd. makes, as with the Unitika of the alloy of PET, the U-8000 that Ltd. makes etc.
The thermoplastic poly acetal can be a homopolymer, also can be multipolymer, from thermal stability aspect, preferred copolymer.POM has obtained equilibrium at aspect of performances such as intensity, abrasion performance, dimensional stability, mouldabilities, therefore, is a kind of engineering plastics that are widely used in the plastic gear etc., can easily obtain on market.For example, the representational commodity Tenac 2010 by name that Asahi Chemical Industry's (strain) makes, Polyplastics Co., the commodity that Ltd. the makes DURACON M25-34 by name etc. of enumerating.By this POM being used for the base material of conductive endless belt, can making not having particularly crooked permanance of resistance inequality, intensity and creep resistance excellence and having the conductive endless belt of high dimensional accuracy.
As the suitable example in the polymer alloy of POM, can enumerate the polymer alloy with thermoplastic polyurethane, thus, except afore-mentioned characteristics, can also obtain the also good effect of resistance to impact.The polymer alloy of POM and thermoplastic polyurethane also can obtain on market.For example, the representational commodity of enumerating Asahi Chemical Industry's (strain) manufacturing are called Tenac 4012 etc.
In addition, as the thermoplastic elastomer in the polymer blend that can be suitable for POM, can enumerate the material identical with the situation of aforementioned PA.Under this situation, by with the mixed effect of this thermoplastic elastomer, also can increase folding number, improve permanance crackle.
Thermoplastic poly naphthalenedicarboxylic acid alkane diol ester resin is a kind of resistance to impact, dimensional stability and against weather excellence and the good engineering plastics of recovery of elasticity characteristic, can easily obtain on market.Particularly, for example, can suit to use thermoplastic poly (ethylene naphthalate) (PEN) resin, thermoplasticity PBN (PBN) resin etc., what be fit to is to use thermoplasticity PBN resin.
In addition,, specifically, can enumerate for example thermoplastic poly ethylene glycol terephthalate (PET) resin, thermoplastic poly mutual-phenenyl two acid bromide two alcohol ester (PBT) resin, be fit to use thermoplasticity PET resin as thermoplastic poly terephthalic acid (TPA) alkane diol ester resin.Thermoplasticity PET resin has excellent characteristics such as thermotolerance, photostability, abrasion performance.
In belt matrix 101, add conductive agent and adjust electric conductivity.As this conductive agent, can suitably use aforementioned material about record in the resin bed 102, be not particularly limited.In addition, its addition with respect to 100 weight portion substrate resins be preferably 0.01～30 weight portion, more preferably about 0.1～20 weight portion.Among the present invention, mainly adjust the electric conductivity of whole belt, in aforementioned resin layer 102, add conductive agent in order to adjust electric conductivity complementaryly by the conductive agent that adds belt matrix 101 to.
In the scope of not damaging effect of the present invention, in belt matrix 101 of the present invention, except mentioned component, can also suitably add other functional components, for example, can suitably mix various packing materials, coupling agent, antioxidant, lubricant, surface conditioning agent, pigment, ultraviolet light absorber, antistatic agent, spreading agent, neutralizing agent, gas-development agent, crosslinking chemical etc.In addition, can also add colorant carries out painted.
The thickness of conductive endless belt of the present invention is suitable decision of shape according to transfer printing belt conveyor or intermediate transfer element etc., preferably counts in the scope of 50～200 μ m with the total thickness of belt matrix 101 and resin bed 102.In addition, as its surfaceness, preferred 10 mean roughness Rz of JIS are below the 10 μ m, are preferably especially below the 6 μ m, more preferably below the 3 μ m.In addition, specific insulation preferably is adjusted into 10 by suitably adding conductive agent like that in resin bed 102 and/or belt matrix 101 as described above
2Ω cm～10
13About in the scope of Ω cm.
Conductive endless belt of the present invention forms and the fitting portion that is formed at fitting portion (not shown) tabling of this driver part on the face of the side that can also contact at the driver parts such as driven roller 30 with the driven roller 9 of the image processing system of Fig. 2 or Fig. 3 shown in the dotted line of Fig. 1.Conductive endless belt of the present invention can prevent the skew of conductive endless belt on its Width by such fitting portion being set and making itself and the chimeric operation of fitting portion (not shown) that is arranged at driver part.
Under this situation, aforementioned fitting portion is not particularly limited, and preferably as shown in Figure 1, makes the continuous raised line of circumferencial direction (sense of rotation) along belt, makes itself and the groove tabling that forms along circumferencial direction on the periphery of driver parts such as driven roller.
In addition, demonstrate among Fig. 1 (a) example of 1 continuous raised line as fitting portion is set, but this fitting portion also can form a line a plurality of protuberances to give prominence to along belt circumferencial direction (sense of rotation) and be provided with, 2 above fitting portions (Fig. 1 (b)) perhaps are set, can also fitting portion be set at the Width central part of belt.In addition, fitting portion can also not be a raised line shown in Figure 1, but along the circumferencial direction (sense of rotation) of belt groove is set, and makes itself and the raised line tabling that forms along circumferencial direction on the periphery of driver parts such as aforementioned driven roller.
In addition, as the image processing system of the present invention that uses conductive endless belt of the present invention, device, the device of intermediate transfer mode as shown in Figure 3 or the device of series connection intermediate transfer mode as shown in Figure 4 that can illustration series system as shown in Figure 2, but be not limited to these devices.In addition, in the situation of device as shown in Figure 3, can suitably apply voltage to the driven roller or the driven wheel that make intermediate transfer element of the present invention 20 rotations by power supply 61, the voltage of this moment can suitably be selected applying condition, as only apply direct current or in direct current stack exchange and apply etc.
And then, the manufacture method of conductive endless belt of the present invention comprises following operation: when forming resin bed 102, apply the solvent-free coating liquid contain ultraviolet curing resin or electron ray curing type resin on belt matrix 101, the irradiation by ultraviolet ray or electron ray makes its curing.By using the method that applies solvent-free coating liquid, can save existing necessary large-scale equipment and space, and suppress the film forming inequality, can form resin bed 102 with low cost and high precision.In the manufacture method of the present invention, operation beyond the formation operation of above-mentioned resin bed 102 is not particularly limited, for example, for belt matrix 101, can pass through the mixing resin combination of forming by the functional components of substrate resin and conductive agent etc. of twin-screw mixer machine, and use the mixing thing extrusion molding of annular die, thereby produce the belt matrix with gained.In addition, also can suitably adopt the powder of static covering with paint etc. to cover with paint, lacquer, colour wash, etc. manufacture methods such as method, infusion process or centrifugal casting method.
Embodiment
Below, use embodiment to more specifically describe the present invention, but the present invention is not limited to following embodiment.
Embodiment 1-1～1-11, comparative example 1-1,1-2
According to the prescription shown in following table 6～8 difference, make the conductive endless belt of each embodiment and comparative example.Specifically, at first, use each blending constituent of the belt matrix shown in each table of twin-screw mixer machine melting mixing, re-use annular die the mixing thing extrusion molding of gained, thus make have internal diameter 220mm, the belt matrix 101 of thick 100 μ m, wide 250mm size.Then, use roll coater on this belt matrix 101, to apply to use the solvent-free coating liquid of the resin bed that each composite material shown in showing makes, make dried thickness become the value shown in following table 9～11 respectively.The limit makes belt 100 rotation after the coating, and USHIO INC. is used on the limit, the Unique UVH-0252C device of manufacturing, with illumination 400mW, accumulation light quantity 1000mJ/cm
2Irradiation ultraviolet radiation makes the curing of coating of resin bed 102, thereby makes conductive endless belt 100.In addition, comparative example 1-1, comparative example 1-2 are not provided with resin bed 102.
Table 6
Table 7
Table 8
In addition, about table 6～table 8, the note in table is as follows.
*1) PA12: the emerging product of space portion (strain) is made, trade name: 3024U
*2) PBN: Supreme Being people changes into (strain) manufacturing, trade name: TQB-OT
*3) PET:Unitika, Ltd. makes, trade name: SA-1206
*4) carbon black: electrochemical industry (strain) is made, trade name: Electricityization Block ラ Star Network
*5) base resin: urethane acrylate oligomer, common prosperity society chemistry (strain) are made, model: UF8001
*6) reactive diluent:
(1) acrylic acid methoxyl triglycol ester, common prosperity society chemistry (strain) manufacturing, model: MTG-A
(2) acrylic acid isopentyl ester
(3) acrylic acid 2-(perfluoro capryl) ethyl ester
*7) polymerization initiator:
(1) acylphosphine oxide, the manufacturing of Ciba Specialty Chemicals company, model: IRGACURE819 (maximum absorption wavelength: 430nm)
(2) Alpha-hydroxy acetophenone, the manufacturing of Ciba Specialty Chemicals company, model: IRGACURE184 (maximum absorption wavelength: 300nm)
*8) conductive agent:
(1) carbon black, trade name: Ketjen EC
(2) carbon black, trade name: Printex35
(3) sodium perchlorate
(4) ITO particulate
*9) adjuvant: Japanese grease (strain) is made, trade name: MODIPER F200
According to following order, the conductive endless belt of the foregoing description 1-1～1-11 and comparative example 1-1,1-2 gained is carried out each mensuration.
The mensuration of＜volume intrinsic resistance rate 〉
In 23 ℃ of temperature, relative humidity 50% time, the device that is connected with sample chamber R12704A on ohmer R8340A that determinator uses ADVANTEST company to make is measured the volume intrinsic resistance rate of measuring the belt under the voltage 100V.In addition, the volume resistance of resin bed is tried to achieve by the following: be coated with coating liquid on copper coin, make curing of coating, then the resistance between copper coin and the mensuration electrode is measured.
The inequality of＜resistance 〉
With metallic drum crimping and make under the state of its rotation, between belt and drum, apply 100V at the conductive endless belt that makes each embodiment and comparative example with 500g load, obtain the poor of all interior maximum resistance of belt 1 and minimum resistance, as the inequality of resistance.
＜picture characteristics 〉
Each belt is installed, each picture characteristics after 100,000 of evaluation initial stage and the printings in the image processing system of the series system of use transfer printing belt conveyor shown in Figure 2.These each evaluation results are shown in following table 9～11.
Table 9
Table 10
Table 11
Embodiment 2-1～2-11, comparative example 2-1,2-2
According to the prescription shown in following table 12～14 difference, make the conductive endless belt of each embodiment and comparative example.Specifically, at first, use each blending constituent of the belt matrix shown in each table of twin-screw mixer machine melting mixing, re-use annular die the mixing thing extrusion molding of gained, thus make have internal diameter 220mm, the belt matrix 101 of thick 100 μ m, wide 250mm size.Then, use roll coater on this belt matrix 101, to apply to use the solvent-free coating liquid of the resin bed that each composite material shown in showing makes, make dried thickness become the value shown in following table 12～14 respectively.The limit makes belt 100 rotations after the coating, USHIO INC. is used on the limit, the Min-EB device of making, under pressurization voltage 30kV, tube current 300 μ A, irradiation distance 100mm, nitrogen atmosphere 760mmTorr, 1 minute condition of irradiation time, shine electron ray, make the curing of coating of resin bed 102, thereby make conductive endless belt 100.In addition, comparative example 2-1, comparative example 2-2 are not provided with resin bed 102.
Table 12
Table 13
Table 14
In addition, about table 12～table 14, the note in table is as follows.
*1) PA12: the emerging product of space portion (strain) is made, trade name: 3024U
*2) PBN: Supreme Being people changes into (strain) manufacturing, trade name: TQB-OT
*3) PET:Unitika, Ltd. makes, trade name: SA-1206
*4) carbon black: electrochemical industry (strain) is made, trade name: Electricityization Block ラ Star Network
*5) base resin: urethane acrylate oligomer, common prosperity society chemistry (strain) are made, model: UV3200
*6) reactive diluent:
(1) dimethacrylate 1, and 9-nonanediol ester, common prosperity society chemistry (strain) are made, model: 1, and 9ND-A
(2) acrylic acid isopentyl ester
(3) acrylic acid 2-(perfluoro capryl) ethyl ester
*7) conductive agent:
(1) carbon black, trade name: Ketjen EC
(2) carbon black, trade name: Printex35
(3) sodium perchlorate
(4) ITO particulate
*8) adjuvant: Japanese grease (strain) is made, trade name: MODIPER F200
According to following order, the conductive endless belt of the foregoing description 2-1～2-11 and comparative example 2-1,2-2 gained is carried out each mensuration.
The mensuration of＜volume intrinsic resistance rate 〉
In 23 ℃ of temperature, relative humidity 50% time, the device that is connected with sample chamber R12704A on ohmer R8340A that determinator uses ADVANTEST company to make is measured the volume intrinsic resistance rate of measuring the belt under the voltage 100V.In addition, the volume resistance of resin bed is tried to achieve by the following: be coated with coating liquid on copper coin, make curing of coating, then the resistance between copper coin and the mensuration electrode is measured.
The inequality of＜resistance 〉
With metallic drum crimping and make under the state of its rotation, between belt and drum, apply 100V at the conductive endless belt that makes each embodiment and comparative example with 500g load, obtain the poor of all interior maximum resistance of belt 1 and minimum resistance, as the inequality of resistance.
Each belt is installed, each picture characteristics after 100,000 of evaluation initial stage and the printings in the image processing system of the series system of use transfer printing belt conveyor shown in Figure 2.These each evaluation results are shown in following table 15～17.
Table 15
Table 16
Table 17
Claims (14)
1. the transfer printing of a series system, conveying conductive endless belt, it is driven the parts circulation and drives, and will be transported to by the recording medium that Electrostatic Absorption keeps on 4 kinds of image formings, and each toner picture is transferred on this recording medium successively, it is characterized in that
Have resin bed on the belt matrix, this resin bed contains ultraviolet curing resin or electron ray curing type resin.
2. conductive endless belt that intermediate transfer element is used, it is set between image forming and the recording medium, and be driven parts circulations and drive, and the temporary transient transfer printing of toner picture that will be formed on described image forming surface remains on the surface of self, and it is transferred on the recording medium, it is characterized in that
Have resin bed on the belt matrix, this resin bed contains ultraviolet curing resin or electron ray curing type resin.
3. conductive endless belt that the intermediate transfer element of connecting is used, it is set between 4 kinds of image formings and the recording medium, and be driven parts circulations and drive, and the temporary transient transfer printing successively of the toner picture that will be formed on described 4 kinds of image forming surfaces remains on the surface of self, and it is transferred on the recording medium, it is characterized in that
Have resin bed on the belt matrix, this resin bed contains ultraviolet curing resin or electron ray curing type resin.
4. according to each described conductive endless belt in the claim 1～3, wherein, described resin bed contains conductive agent.
5. conductive endless belt according to claim 4, wherein, described conductive agent is a carbon black.
6. according to each described conductive endless belt in the claim 1～3, wherein, described ultraviolet curing resin or electron ray curing type resin contain any one or both in fluorine and the silicon.
7. according to each described conductive endless belt in the claim 1～3, wherein, the maximum wavelength that described ultraviolet curing resin comprises the UVA wavelength band is the above ultraviolet polymerization initiator of 400nm.
8. conductive endless belt according to claim 7, wherein, described ultraviolet curing resin also comprises the ultraviolet polymerization initiator of the not enough 400nm of maximum wavelength of UVA wavelength band.
9. conductive endless belt according to claim 4 wherein, uses 2 kinds of the above conductive agents.
10. according to each described conductive endless belt in the claim 1～3, wherein, the thickness of described resin bed is 1～30 μ m.
11. conductive endless belt according to claim 5, wherein, the content of described carbon black is in the scope of 1～30 weight portion with respect to described ultraviolet curing resin of 100 weight portions or electron ray curing type resin.
12. according to each described conductive endless belt in the claim 1～3, wherein, specific insulation is 10
2Ω cm～10
13In the scope of Ω cm.
13. the manufacture method of a conductive endless belt, it is characterized in that, it is the manufacture method of each described conductive endless belt in the claim 1～3, on described belt matrix, apply the solvent-free coating liquid that contains described ultraviolet curing resin or electron ray curing type resin, irradiation by ultraviolet ray or electron ray is solidified the coating liquid after this coating, forms described resin bed.
14. an image processing system is characterized in that, possesses each described conductive endless belt in the claim 1～3.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP380912/2004 | 2004-12-28 | ||
| JP2004380911A JP2006184785A (en) | 2004-12-28 | 2004-12-28 | Conductive endless belt, its manufacturing method, and image forming apparatus using same |
| JP380911/2004 | 2004-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101095086A true CN101095086A (en) | 2007-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200580045350 Pending CN101095086A (en) | 2004-12-28 | 2005-12-14 | Conductive endless belt, method for producing same, and image forming apparatus employing same |
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| Country | Link |
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| JP (1) | JP2006184785A (en) |
| CN (1) | CN101095086A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102754037A (en) * | 2010-02-04 | 2012-10-24 | 株式会社普利司通 | Electroconductive endless belt |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5017960B2 (en) * | 2006-08-18 | 2012-09-05 | コニカミノルタビジネステクノロジーズ株式会社 | Intermediate transfer member, image forming method and image forming apparatus using the same |
| JP5433956B2 (en) * | 2008-02-15 | 2014-03-05 | 株式会社ブリヂストン | Conductive endless belt |
| WO2010024408A1 (en) * | 2008-08-28 | 2010-03-04 | 株式会社ブリヂストン | Conductive endless belt |
| JP5482772B2 (en) * | 2011-12-12 | 2014-05-07 | コニカミノルタ株式会社 | Belt member, fixing device and image forming apparatus |
| JP5668820B2 (en) * | 2013-10-09 | 2015-02-12 | 株式会社ブリヂストン | Manufacturing method of conductive endless belt |
| JP6107753B2 (en) * | 2014-06-30 | 2017-04-05 | コニカミノルタ株式会社 | Transfer member and image forming apparatus |
| JP7330769B2 (en) * | 2019-06-06 | 2023-08-22 | 株式会社アーケム | Conductive endless belt and image forming apparatus |
-
2004
- 2004-12-28 JP JP2004380911A patent/JP2006184785A/en active Pending
-
2005
- 2005-12-14 CN CN 200580045350 patent/CN101095086A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102754037A (en) * | 2010-02-04 | 2012-10-24 | 株式会社普利司通 | Electroconductive endless belt |
| CN102754037B (en) * | 2010-02-04 | 2015-09-02 | 株式会社普利司通 | Conductive endless belt |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006184785A (en) | 2006-07-13 |
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