CN103792802B - Mono-layer electronic photographic photoreceptor and image processing system - Google Patents
Mono-layer electronic photographic photoreceptor and image processing system Download PDFInfo
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- CN103792802B CN103792802B CN201310470646.1A CN201310470646A CN103792802B CN 103792802 B CN103792802 B CN 103792802B CN 201310470646 A CN201310470646 A CN 201310470646A CN 103792802 B CN103792802 B CN 103792802B
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Abstract
The present invention relates to mono-layer electronic photographic photoreceptor and image processing system.The mono-layer electronic photographic photoreceptor of the present invention possesses on conductive base comprises at least charge generating material, electron transport materials, hole transporting material, the photosensitive layer of binding resin in same layer.The thickness of photosensitive layer is 10~40 μm, charge generating material includes TiOPc pigment, relative to the mass parts of binding resin 100, contain the mass parts of hole transporting material 50~120 respectively, the mass parts of electron transport materials 55~90, binding resin include the polycarbonate resin containing the specific mass % of repeat unit 15~60.In accordance with the invention it is possible to a kind of ISO is provided and is difficult to the photoreceptor that storage and black color dots occur.In addition, the image processing system of the present invention is due to providing this photoreceptor as image carrier, therefore can continue to provide good image.
Description
Technical field
The present invention relates to mono-layer electronic photographic photoreceptor and possesses the image processing system of single-layer type photoreceptor.
Background technology
In recent years, duplicator, printer develop from black and white to colour, promote miniaturization, the high speed of fuselage, therefore with
The corresponding ISO of high speed processing is indispensable.
Currently, the charge generating material as individual layer photoreceptor, the quantum yield of TiOPc pigment is high, is for electronics
The highly useful charge generating material of the ISO of electrophotographic photoconductor.But TiOPc pigment is used as electric charge material occurs
During material, because the sensitivity of exposure portion and non-exposed portion difference is big, cause to store（メモリー）It is easy to remain, is especially in the presence of and turns
Print storage（Translocation writes メ モ リ ー）The problem of residual.
Further, the Electrophtography photosensor for being applicable TiOPc pigment is prone to black color dots on so-called image
（Shang portrait point）Stain（Port チ）.And then during high speed processing, due to the film amount of cutting of the photosensitive layer of Electrophtography photosensor
（Film cuts れ amounts）Become big, therefore the problem of being prone to stain be present.
Transfer store methods as photoreceptor, it is also contemplated that the charge transport material in increase photosensitive layer, particularly
The content of electron transport materials, but this method is tailed off due to the resin ratio in photosensitive layer, therefore the film amount of the cutting increase of photosensitive layer
It is easier to that stain occurs.
In order to suppress the generation of the stain, the intermediate layer to being arranged between photosensitive layer and supporter had been substantially carried out in the past
The research of the particle of middle addition（Patent document 1~3）.
But the above method is photosensitive using the single layer type electrophotograph that TiOPc pigment is used as to charge generating material
In the high speed processing of body, the generation for suppressing memory phenomenon and stain is insufficient.
The content of the invention
In view of the above, being used in high speed processing it is an object of the invention to provide one kind can also suppress to expose
Storage, the mono-layer electronic photographic photoreceptor of good image can be obtained and using the mono-layer electronic photographic photoreceptor
Image processing system.
The present inventor etc. has found possessing the thickness for containing TiOPc pigment as charge generating material for 10~40 μm
Photosensitive layer mono-layer electronic photographic photoreceptor in, relative to the mass parts of binding resin 100, the hole containing specified quantitative respectively
Material and electron transport materials are conveyed, and then, when binding resin includes the polycarbonate resin containing specific repeat unit, energy
It is enough to suppress exposure storage and the generation of stain, so that completing the present invention.Specifically, the present invention provides following photoreceptor.
Mono-layer electronic photographic photoreceptor involved by the scheme of the present invention, it is characterised in that in conductive base
On possess the sense that charge generating material, electron transport materials, hole transporting material and binding resin are comprised at least in same layer
Photosphere, the thickness of the photosensitive layer is 10~40 μm, and the charge generating material includes TiOPc pigment, is set relative to bonding
The mass parts of fat 100, respectively containing the mass parts of hole transporting material 50~120, the mass parts of electron transport materials 55~90, bond tree
Fat is polycarbonate resin, relative to the quality of polycarbonate resin, containing by following formula（1）The repeat unit 15~60 of expression
Quality %.
It was found that by this structure, it can obtain that the generation of exposure storage and stain can be suppressed and can provide good
The mono-layer electronic photographic photoreceptor of image.
【Chemical formula 1】
[formula（1）In, R1And R2Independently, the alkyl of hydrogen atom or carbon number 1~3 is represented.]
In addition, the image processing system involved by another program of the present invention, possesses：Image carrier；Electro-mechanical part, it is used for
Make the surface of described image supporting body powered；Exposure portion, for exposing the surface of powered described image supporting body, so that
Electrostatic latent image is formed on the surface of described image supporting body；Development section, for being toner image by the latent electrostatic image developing；
And transfer section, for the toner image to be transferred from described image supporting body to transfer printing body, described image supporting body
For above-mentioned mono-layer electronic photographic photoreceptor.
It was found that according to this structure, can obtain carrying the electrofax sense that can suppress exposure storage and the generation of stain
The image processing system of the stabilization of body of light.
By the explanation of embodiments described below, other objects of the present invention, by the present invention obtain it is specific
Advantage is definitely.
Brief description of the drawings
Fig. 1 is the figure for the structure for representing single-layer type photoreceptor.
Fig. 2 is the schematic diagram for the structure of one for representing the image processing system of the present invention.
Fig. 3 is the schematic diagram of storage image evaluation original copy.
Embodiment
Below, embodiments of the present invention are illustrated, but the present invention is not limited to these.
[first embodiment]
Electrophtography photosensor involved by the first embodiment of the present invention is to possess on conductive base same
Charge generating material, electron transport materials, hole transporting material and binding resin are comprised at least in layer, thickness is 10~40 μm
The mono-layer electronic photographic photoreceptor of photosensitive layer.In the mono-layer electronic photographic photoreceptor involved by first embodiment, electricity
Lotus generating material includes TiOPc pigment.In addition, the content phase of the hole transporting material and electron transport materials in photosensitive layer
For the mass parts of binding resin 100, respectively 50~120 mass parts, 55~90 mass parts.And then photosensitive layer include contain by
Following formula（1）The mass % of repeat unit 15~60 of expression polycarbonate resin is as binding resin.
【Chemical formula 2】
Below, the mono-layer electronic photographic photoreceptor involved by first embodiment is described in detail.Such as Fig. 1
's（a）Shown, mono-layer electronic photographic photoreceptor 20 possesses photosensitive layer supporter 11；And used on photosensitive layer supporter 11
List that photosensitive layer coating liquid containing specific solvent is formed, containing charge generating material, charge transport material and binding resin
The photosensitive layer 21 of layer.Here, as long as mono-layer electronic photographic photoreceptor 20 possesses photosensitive layer supporter 11 and photosensitive layer 21, then simultaneously
It is not particularly limited.Specifically, can also be such as Fig. 1 for example, photosensitive layer 21 can be directly provided with photosensitive layer supporter 11
（b）Shown, mono-layer electronic photographic photoreceptor 20 ' possesses intermediate layer 14 between photosensitive layer supporter 11 and photosensitive layer 21.Separately
Outside, photosensitive layer 21 can expose as outermost layer, can also possess protective layer on photosensitive layer 21（It is not shown）.
In the present invention, cavity conveying material is contained together with TiOPc pigment as shown below in above-mentioned photosensitive layer 21
Material（HTM）And electron transport materials（ETM）So-called charge transport material（CTM）.
（TiOPc pigment）
In the present invention, as charge generating material（CGM）As long as can be as mono-layer electronic photographic photoreceptor
The TiOPc pigment that charge generating material uses, then be not particularly limited for crystal formation, and various crystal formations can be used.It is specific and
Speech, can enumerate α type TiOPcs（α-TiOPc）, β type TiOPcs（β-TiOPc）, Y type TiOPcs（y-TiOPc）Deng.
And then preferably use has following characteristics（A）With（B）Titanyl phthalocyanin crystal.
（A）In CuK α characteristic X-ray difraction spectrums, θ ± 0.2 °=27.2 ° of Bragg angle 2 have a main peak, and
26.2 ° do not have peak.
（B）In Differential Scanning Calorimetry analysis, in addition to along with the peak of the gasification of absorption water, at 270~400 DEG C
In the range of there is a peak.
Its reason is by using the titanyl phthalocyanin crystal with above-mentioned defined characteristic, so as to significantly improve exposure
The formation efficiency of the electrostatic latent image brought.That is, titanyl phthalocyanin crystal passes through with characteristic（A）, so as to significantly improve its electricity
Lotus generating ability.In addition, titanyl phthalocyanin crystal passes through with characteristic（B）, so as to further improve its crystalline stability, electricity
Lotus generating ability and dispersiveness.
In addition, as the peak beyond the peak of the gasification along with absorption water, one occurred in the range of 270~400 DEG C
Individual peak preferably occurs in the range of 290~400 DEG C, more preferably occurs in the range of 300~400 DEG C.
In addition, in order to obtain that there is above-mentioned characteristic（A）With（B）Titanyl phthalocyanin crystal, when synthetic phthalocyanine oxygen titanizing close
During thing, it is preferable that relative to phthalonitrile as other materials material or derivatives thereof or the different Yin of 1,3- diimino
1 mole of diindyl quinoline or derivatives thereof, the addition as the Titanium alkoxides such as four titanium butoxides of material substance or titanium tetrachloride is set to
Value in the range of 0.40~0.53 mole, it is highly preferred that being set to the value in the range of 0.42~0.50 mole.
And then, it is preferable that the synthesis of above-mentioned TiOPc compound is carried out in the presence of urea compounds, now, more
Preferably, will relative to 1 mole of phthalonitrile or derivatives thereof or 1,3- diiminoisoindole or derivatives thereof
The addition of urea compounds is set to the value in the range of 0.1~0.95 mole, it is highly preferred that being set to 0.2~0.8 mole of model
Enclose interior value.
（Hole transporting material）
As hole transporting material, as long as can be as included in the photosensitive layer of mono-layer electronic photographic photoreceptor
The material that hole transporting material uses, then be not particularly limited.As the concrete example of hole transporting material, benzidine can be enumerated
Derivative, 2,5- bis-（4- methylamino phenyl）- 1,3,4- oxadiazoles Deng oxadiazoles based compound, 9-（4- diethylamino benzene
Vinyl）The carbazole such as the styrenics such as anthracene, PVK based compound, organopolysilane compound, 1- phenyl-
3-（P- dimethylaminophenyl）The pyrazoline such as pyrazoline based compound, hydrazone based compound, triphen amine compound, indoles system
The nitrogenous cyclic compounds such as compound, oxazole based compound, isoxazole based compound, thiazole compound, three azole compounds,
Fused-polycyclic compounds etc..Among these hole transporting materials, more preferably there are one or more triphenylamines in the molecule
The triphen amine compound of skeleton.These hole transporting materials can be used alone or be used in combination of two or more.
（Electron transport materials）
As electron transport materials, as long as can be as included in the photosensitive layer of mono-layer electronic photographic photoreceptor
The material that electron transport materials use, then be not particularly limited.Specifically, such as naphthoquinone derivatives, diphenoquinone can be enumerated
The quinone derivatives such as derivative, anthraquinone derivative, azo quinone derivative, nitroanthraquinone derivative, dinitroanthraquinone derivative, the third two
Carbonitrile derivatives, thio-pyrylium derivative, trinitro- thioxanthone derivates, 3,4,5,7- tetranitros -9-Fluorenone derivative, dinitro
Anthracene derivant, dinitro acridine derivatives, tetracyanoethylene, 2,4,8- trinitro-s thioxanthones, dinitro benzene, dinitro anthracene, dinitro
Base acridine, succinic anhydride, maleic anhydride, dibromomaleic acid acid anhydride etc..Electron transport materials can be used alone or combine two
Kind is used above.
（Binding resin）
Binding resin used in the present invention is polycarbonate resin, including at least the quality relative to polycarbonate resin
Containing by following formula（1）The mass % of repeat unit 15~60 of expression material.
【Chemical formula 3】
[formula（1）In, R1And R2Independently, the alkyl of hydrogen atom or carbon number 1~3 is represented.]
Polycarbonate resin has by above-mentioned formula（1）During the repeat unit of expression, it is easy to well divide in binding resin
Dissipate charge transport material.When therefore, using this binding resin, even if the amount of increase charge transport material, is also easy to manufacture resistance to
Abrasiveness is excellent, can suppress the Electrophtography photosensor of the generation for the stain to be formed in image.Included in binding resin
Polycarbonate resin is particularly preferably the quality relative to polycarbonate resin, containing by above-mentioned formula（1）The repeat unit of expression
40~60 mass %.
Polycarbonate resin is preferably by above-mentioned formula（1）On the basis of the repeat unit of expression, containing by following formula（2）Table
The repeat unit shown.In this case, it is easy to further to suppress the generation of stain formed in image.
【Chemical formula 4】
[formula（2）In, R3And R4Independently, the alkyl of hydrogen atom or carbon number 1~3 is represented.]
The manufacture method of above-mentioned polycarbonate resin is not particularly limited.It is, for example, possible to use and formula（1）And root
According to needs with being documented in formula（2）Deng repeat unit corresponding to bisphenol compound, according to the manufacture of known polycarbonate resin
Method is manufactured., then can be with as long as polycarbonate resin does not hinder the purpose of the present invention when polycarbonate resin is copolymer
For any of random copolymer and block copolymer.
The viscosity average molecular weigh of binding resin is preferably more than 25000.By the way that the viscosity average molecular weigh of binding resin is set to
Scope is stated, it is also excellent even if the amount wear resistance of increase charge transport material so as to which binding resin is changed into appropriate hardness, can
Suppress the generation of stain formed in image.In addition, from the viewpoint of dissolubility in organic solvent, its viscosity average molecular weigh
Preferably less than 55000.
Binding resin in the range of the effect of the present invention is not damaged, can also include by above-mentioned formula as needed
（1）Resin beyond the polycarbonate resin of the repeat unit of expression.As including by above-mentioned formula（1）The repeat unit of expression
Resin beyond polycarbonate resin, as long as can be as viscous included in the photosensitive layer of mono-layer electronic photographic photoreceptor
The material tied resin and used, then be not particularly limited.As concrete example, can enumerate does not include by above-mentioned formula（1）Represent
The polycarbonate resin of repeat unit, phenylethylene resin series, SB, SAN,
Styrene-maleic acid copolymer, Styrene-acrylic copolymer, acrylic copolymer, polyvinyl resin, ethane-acetic acid ethyenyl
Ester copolymer, chlorinated polyethylene resin, Corvic, acrylic resin, ionomer, Chlorovinyl-acetate vinyl copolymerization
Thing, alkyd resin, polyamide, polyurethane resin, polyarylate resin, polysulfone resin, diallyl phthalate tree
The thermoplastic resins such as fat, ketone resin, polyvinyl butyral resin, polyether resin, polyester resin；Silicone resin, epoxy resin,
The thermosetting resin of phenolic resin, carbamide resin, melmac and other bridging property thermosetting resins etc.；Epoxy acrylate
The photocurable resins such as resin, polyurethane acrylic emulsion copolymerization resin.These resins can also combine two or more use.
It is in binding resin including by above-mentioned formula（1）The content of the polycarbonate resin of the repeat unit of expression is not hindering
Hinder and be not particularly limited in the range of the purpose of the present invention.It is in binding resin including by above-mentioned formula for typical case（1）Represent
The content of the polycarbonate resin of repeat unit is preferably more than 60 mass %, more preferably more than 80 mass %.
（Additive）
The photosensitive layer of mono-layer electronic photographic photoreceptor can also bring dysgenic scope in not electron photographic property
It is interior, in addition to charge generating material, hole transporting material, electron transport materials and binding resin, also comprising various additives.
As the additive in photosensitive layer can be coordinated, such as antioxidant, radical scavenger, singlet quencher can be enumerated
（singlet quencher）, anti-deterioration agent, softening agent, plasticizer, polycyclc aromatic compound, the surface such as ultra-violet absorber
Modifying agent, extender, tackifier, dispersion stabilizer, wax, oil, acceptor, donor, surfactant and homogenize agent etc..
（The manufacture method of mono-layer electronic photographic photoreceptor）
The manufacture method of mono-layer electronic photographic photoreceptor is not particularly limited in the range of the purpose of the present invention is not hindered.
As the preferable example of the manufacture method of mono-layer electronic photographic photoreceptor, can enumerate the coating solution of photosensitive layer
The method for forming photosensitive layer on photosensitive layer supporter.Specifically, can be by will in a solvent dissolve or be dispersed with electric charge
Generating material, charge transport material, binding resin and the coating fluid for also dissolving or being dispersed with various additives etc. as needed
It is coated on photosensitive layer supporter, and is dried and manufactures.Coating method is not particularly limited, such as can be enumerated using rotation
Turn the method for coating machine, applicator, flush coater, metering bar coater, dip coater, doctor etc..Among these coating methods, by
In continuous production can be carried out and economy is excellent, therefore it is preferably the infusion process using dip coater.In addition, feeling as being formed
The drying means of film on photosphere supporter, such as can enumerate and be carried out under conditions of 80~150 DEG C and 15~120 minutes
Method of heated-air drying etc..
In the mono-layer electronic photographic photoreceptor involved by first embodiment, the charge generating material in photosensitive layer
（CGM）, hole transporting material（HTM）, electron transport materials（ETM）Suitably selected with each content of binding resin, not
It is particularly limited to.Specifically, for example, charge generating material content, relative to the mass parts of binding resin 100, preferably 0.1~
50 mass parts, more preferably 0.5~10 mass parts.The content of electron transport materials, it is excellent relative to the mass parts of binding resin 100
Elect 55~90 mass parts, more preferably 60~80 mass parts as.The content of hole transporting material, relative to the matter of binding resin 100
Measure part, more preferably preferably 50~120 mass parts, 60~100 mass parts.In addition, hole transporting material and electron transport material
The content of the total amount of material, i.e. charge transport material, relative to the mass parts of binding resin 100, preferably 105~150 mass parts, more
Preferably 110~140 mass parts.
The content of above-mentioned charge transport material and their sum can not suppress the generation of stain when being discontented with lower limit, mutually surpass in reverse
When crossing higher limit, photosensitive layer causes the crystallization of charge transport material and the electrical characteristics of photoreceptor is impacted when being formed.
As the solvent contained in the coating fluid of photosensitive layer, if can make composition photosensitive layer each composition dissolve or
It is scattered, then it is not particularly limited.Specifically, the alcohols such as methanol, ethanol, isopropanol, butanol can be enumerated；N-hexane, octane,
The fatty family hydrocarbon such as hexamethylene；The aromatic hydrocarbons such as benzene,toluene,xylene；Dichloromethane, dichloroethanes, carbon tetrachloride, chlorobenzene
Deng halogenated hydrocarbons；The ethers such as dimethyl ether, diethyl ether, tetrahydrofuran, glycol dimethyl ether, diethylene glycol dimethyl ether；Acetone, butanone, first
The ketones such as base isobutyl ketone, cyclohexanone；The esters such as ethyl acetate, methyl acetate；Dimethylformaldehyde, dimethylformamide, diformazan
The aprotic polar organic solvent such as sulfoxide.These solvents can be used alone or be used in combination of two or more.
The thickness of the photosensitive layer of the present invention is preferably 10~50 μm, more preferably 10~40 μm.
[second embodiment]
Second embodiment of the present invention is related to image processing system, and the image processing system possesses：Image carrier；With
In making the powered electro-mechanical part in the surface of image carrier；For exposing the surface of powered image carrier, so as in image
The exposure portion of electrostatic latent image is formed on the surface of supporting body；For the development section by latent electrostatic image developing for toner image；With
And for toner image to be transferred to the transfer section of transfer printing body from image carrier, image carrier is first embodiment
Involved mono-layer electronic photographic photoreceptor.Image processing system involved by second embodiment is due to possessing above-mentioned knot
Structure, even image processing system does not have except electric unit and scraper plate cleaning unit are so prone to exposure storage and stain
Apparatus structure, it can also suppress exposure storage and the generation of stain.
Monochrome image forming apparatus, coloured image are applicable to as the image processing system involved by second embodiment
Any one in forming apparatus, it is preferably the color image forming device using the series system of multi-color toner here.More
Specifically, the color image forming device of the series system using multi-color toner as described below can be enumerated.
Here, the color image forming device of series system is illustrated.
Possess the image processing system of the mono-layer electronic photographic photoreceptor involved by present embodiment, possess：Multiple figures
As supporting body, in order to form the toner image of the toner of respectively different a variety of colors formation on each face, providing
It is set up in parallel on direction；And multiple development sections, the plurality of development section possess with each image carrier it is arranged opposite, on surface
The developer roll on the upper surface for carrying and transporting toner and the toner of transport being fed separately to each image carrier, as
Each image carrier uses mono-layer electronic photographic photoreceptor respectively.
Fig. 2 is the image formation dress for representing to possess the mono-layer electronic photographic photoreceptor involved by embodiments of the present invention
The schematic diagram for the structure put.Here, as image processing system, illustrated by taking color printer 1 as an example.
As shown in Fig. 2 the color printer 1 has the equipment body 1a of box.Confession is provided with equipment body 1a
Sheet feed section 2 to paper P, transport the paper P from the sheet feed section 2 supply and view data etc. will be based on photoreceptor with non-magnetic
Property the image forming part 3 that is transferred on paper P of the toner image that develops of one pack system mode and implement will be in the image shape
The unfixed toner image being transferred into portion 3 on paper P is fixed to the fixing section 4 of the fixing processing on paper P.Further,
The paper discharge unit 5 that discharge implements the paper P of fixing processing in fixing section 4 is provided with equipment body 1a upper surface.
Sheet feed section 2 possesses paper feeding cassette 121, takes paper bowl 122, paper feed roller 123,124,125 and resistance roller 126.Paper feeding cassette
121 are configured to plug off at equipment body 1a, for storing the paper P of various sizes.Paper bowl 122 is taken to be arranged on paper supply
Upper left side position shown in Fig. 2 of box 121, for taking out the paper P being stored in paper feeding cassette 121 one by one.Paper feed roller 123,
124th, 125 sheet conveying passage will be passed out to by the paper P for taking paper bowl 122 to take out.Resistance roller 126 make by paper feed roller 123,
124th, 125 pass out to sheet conveying passage paper P temporarily it is standby after, image forming part 3 is supplied to defined timing.
In addition, sheet feed section 2 is further equipped with the (not shown) manual of the left surface shown in Fig. 2 installed in equipment body 1a
Pallet and take paper bowl 127.This takes paper bowl 127 to take out the paper P being placed in manual pallet.Pass through the paper for taking paper bowl 127 to take out
Open P and sheet conveying passage is sent to by paper feed roller 123,125, and be fed into by resistance roller 126 with defined timing
Image forming part 3.
Image forming part 3 possesses image formation unit 7, by the image formation unit 7 on its surface（Contact surface）Upper quilt
The intermediate transfer belt 31 of toner image of the primary transfer based on the view data from transmission such as computers and for making in this
Between toner image in transfer belt 31 be secondarily transferred to secondary transfer roller 32 on the paper P being sent into from paper feeding cassette 121.
Image formation unit 7 possesses from upstream side（It is right side in fig. 2）The black unit that downstream side arranges successively
7K, yellow unit 7Y, indigo unit 7C and magenta unit 7M.Each unit 7K, 7Y, 7C and 7M are configured as
Respective middle position is along arrow（Clockwise）Direction can rotatably be configured with the single-layer type electronics photograph as image carrier
Phase photoreceptor 37（" photoreceptor 37 " below）.Moreover, distinguish in order from direction of rotation upstream side around each photoreceptor 37
It is configured with electro-mechanical part 39, exposure portion 38, development section 71.In the present invention, due to without based on removing electric unit except electrical equipment
Image can be formed well, therefore can realize space saving.In addition, as photoreceptor 37, preferably using single-layer type electronics
Electrophotographic photoconductor.
Electro-mechanical part 39 makes the side face of the Electrophtography photosensor 37 rotated in the direction of the arrow equably powered.Electro-mechanical part 39
The side face of Electrophtography photosensor 37 can be made equably powered, be not specially limited, can be cordless, can also
It is the way of contact.As the concrete example of electro-mechanical part, corona charging device, charged roller, band brush etc., more preferably band can be enumerated
Electric roller, the Charging system with ways of contact such as brushes.By using the electro-mechanical part 39 of the way of contact, can suppress by electro-mechanical part 39
The discharge of caused ozone and nitrogen oxides isoreactivity gas, can prevent the Electrophtography photosensor as caused by active gases
The deterioration of photosensitive layer, and the design of working environment etc. can have been accounted for.
In the electro-mechanical part 39 for the charged roller for possessing the way of contact, charged roller makes sense in the state of being contacted with photoreceptor 37
The side face of body of light 37（Surface）It is powered.It as this charged roller, such as can enumerate in the case where being contacted with photoreceptor 37, be subordinated to sense
The rotation of body of light 37 and roller for rotating etc..In addition, as charged roller, such as the roller that at least surface element is made up of resin can be enumerated
Deng.More specifically, for example, can enumerate possess can rotatably by the plug of axle support, formed resin bed on plug with
And the roller of alive voltage application portion is applied to plug etc..Possesses the electro-mechanical part 39 of this charged roller by voltage application portion to core
Rod applies voltage, so as to make the surface of the photoreceptor 37 via resin bed contact powered.
Preferably, it is only DC voltage to be applied to the voltage of charged roller by voltage application portion.It is applied to by charged roller
The DC voltage of Electrophtography photosensor is preferably 1000~2000V, more preferably 1200~1800V, and particularly preferably 1400
~1600V.With being superimposed alternating voltage or to DC voltage the superimposed voltage of alternating voltage and being applied to the situation phase of charged roller
Than in the case of only applying DC voltage to charged roller, the tendency of the wear extent reduction of photosensitive layer be present.
In addition, forming the resin of the resin bed of charged roller as long as the side face of photoreceptor 37 can be made powered well, then not
It is particularly limited to.As the concrete example of the resin for resin bed, silicone resin, polyurethane resin, silicone modified tree can be enumerated
Fat etc..Furthermore it is also possible to make to contain inorganic filling material in resin bed.
Exposure portion 38 is so-called laser scan unit, to the side face of the photoreceptor 37 by the uniform charged of electro-mechanical part 39,
Irradiation is based on from the personal computer as epigyny device（PC）The laser of the view data of input, base is formed on photoreceptor 37
In the electrostatic latent image of view data.Development section 71 by supplying toner to the side face of the photoreceptor 37 formed with electrostatic latent image,
Form the toner image based on view data.As visualization way, preferably it is applicable cheap and forms high image quality but easily cause into
The non-magnetic mono-component development of film.Moreover, the toner image is transferred on intermediate transfer belt 31.
Intermediate transfer belt 31 is the banding rotary body of ring-shaped, with surface（Contact surface）Side and the side face point of each photoreceptor 37
The mode not abutted is erected on multiple rollers such as driven roller 33, driven voller 34, support roller 35 and primary transfer roller 36.Separately
Outside, intermediate transfer belt 31 is configured to be pressed against photoreceptor in the primary transfer roller 36 by being oppositely disposed with each photoreceptor 37
In the state of 37, pass through multiple roller ring rotations.Driven roller 33 is applied and is used for by the driving source rotation driving such as stepping motor
Make the driving force of the ring rotation of intermediate transfer belt 31.Driven voller 34, support roller 35 and primary transfer roller 36 are arranged to rotate
Freely, and with the ring rotation of the intermediate transfer belt 31 as caused by driven roller 33 driven rotation is carried out.These rollers 34,35,
36 support intermediate transfer belt 31 while carrying out driven rotation via intermediate transfer belt 31 according to the active rotation of driven roller 33.
Primary transfer roller 36 applies primary transfer bias to intermediate transfer belt 31（It is opposite with the powered polarity of toner
Polarity）.Consequently, it is possible to the toner image on each photoreceptor 37 is formed between each photoreceptor 37 and primary transfer roller 36,
Transferred successively with the state of recoating（Primary transfer）To the drives edge arrow by driven roller 33（Counterclockwise）What direction rotated
On intermediate transfer belt 31.
Secondary transfer roller 32 applies to paper P to be biased with the secondary transfer printing of toner image opposite polarity.So, by once
The toner image being transferred on intermediate transfer belt 31 is transferred between secondary transfer roller 32 and support roller 35 on paper P,
Thus the transferred image of colour is transferred on paper P（Unfixed toner image）.
Fixing section 4 is to implement the part of fixing processing for the transferred image being transferred in image forming part 3 on paper P,
Possess the heating roller 41 heated by heating power body and be oppositely disposed with heating roller 41 and side face be pressed abut to plus
The backer roll 42 of the side face of hot-rolling 41.
Moreover, being transferred to by secondary transfer roller 32 transferred image on paper P in image forming part 3, pass through the paper
The fixing processing carried out by heating when opening P by between heating roller 41 and backer roll 42 is fixed on paper P.It is moreover, real
The paper P of fixing processing has been applied to the ADF of paper discharge unit 5.In addition, in the color printer 1 of present embodiment, fixing section 4 with
Appropriate location between paper discharge unit 5 is equipped with transport roller 6.
The equipment body 1a that paper discharge unit 5 passes through color printer 1 top depression is formed, in the bottom of the recess of depression
Formed with reception by the paper P of ADF discharge tray 51.
Color printer 1 is acted by image formation as described above, and image is carried out on paper P and is formed.Moreover, such as
In the image processing system of upper described series system, due to possessing the single layer type electrophotograph sense involved by first embodiment
Body of light can suppress exposure storage and the generation of stain as image carrier.
【Embodiment】
Hereinafter, more specific description is carried out to the present invention by embodiment.In addition, the present invention is not carried out example and limited.
<Photoreceptor makes>
Charge generating material for research, hole transporting material, electron transport materials, makrolon are shown in table 1,2
Resin and its content.When manufacturing photoreceptor, by the content described in the mass parts of charge generating material 2 and table 1（Mass parts）'s
Hole transporting material and electron transport materials, the mass parts of polycarbonate resin 100 of viscosity average molecular weigh 30000 and tetrahydrochysene furan
800 mass parts of muttering are added in ball mill, carry out 50 hours mixing, decentralized processings, are prepared for the coating fluid of photosensitive layer.Connect
, obtained coating fluid is coated on conductive board by dip coating, processing in 40 minutes is carried out so as to by film with 100 DEG C
Tetrahydrofuran is removed, obtains the single layer electronic electrophotographic photoconductor for possessing the photosensitive layer of 30 μm of thickness.
In addition, in table 1, " resin 1 " is polycarbonate resin, " resin 2 " is other resins beyond polycarbonate resin,
" contain than " described in the column of resin 1 is relative to the quality % of the resin 1 of the quality of binding resin, repeat unit（1）Column
" than " be relative to resin 1 it is quality, by foregoing formula（1）The ratio of the quality of the repeat unit of expression（Quality %）.
【Table 1】
【Table 2】
In addition, the mark and chemical constitution of each material shown in table 1,2 are as follows.
<Charge generating material（CGM）>
CG1：（A）In CuK α characteristic X-ray difraction spectrums, θ ± 0.2 °=27.2 ° of Bragg angle 2 have maximum peak,
And do not have peak at 26.2 °,（B）In Differential Scanning Calorimetry analysis, except the peak of the gasification along with absorption water is with external
There is the crystallization of the TiOPc of the following chemical formula record at a peak in the range of 50~270 DEG C.
CG2：（A）In CuK α characteristic X-ray difraction spectrums, θ ± 0.2 °=27.2 ° of Bragg angle 2 have maximum peak,
And do not have peak at 26.2 °,（C）In Differential Scanning Calorimetry analysis, in addition to along with the peak of the gasification of absorption water,
The crystallization for the TiOPc that following chemical formula without peak is recorded in the range of 50~400 DEG C.
CG3：（A）In CuK α characteristic X-ray difraction spectrums, θ ± 0.2 °=27.2 ° of Bragg angle 2 have maximum peak,
And do not have peak at 26.2 °,（D）In Differential Scanning Calorimetry analysis, in addition to along with the peak of the gasification of absorption water,
The crystallization of the TiOPc of 270 DEG C to the 400 DEG C following chemical formula records with a peak.
CG4：In CuK α characteristic X-ray difraction spectrums, θ ± 0.2 ° of Bragg angle 2 at least has master in 7.6 °, 28.6 °
The crystallization for the TiOPc that the following chemical formula for the diffraction maximum wanted is recorded.
【Chemical formula 5】
<Hole transporting material（HTM）>
HT1：
【Chemical formula 6】
HT2：
【Chemical formula 7】
HT3：
【Chemical formula 8】
HT4：
【Chemical formula 9】
HT5：
【Chemical formula 10】
HT6：
【Chemical formula 11】
HT7：
【Chemical formula 12】
HT8：
【Chemical formula 13】
<Electron transport materials（ETM）>
ET1：
【Chemical formula 14】
ET2：
【Chemical formula 15】
ET3：
【Chemical formula 16】
ET4：
【Chemical formula 17】
ET5：
【Chemical formula 18】
ET6：
【Chemical formula 19】
ET7：
【Chemical formula 20】
<The repeat unit of binding resin>
R1：
【Chemical formula 21】
R2：
【Chemical formula 22】
R3：
【Chemical formula 23】
R4：
【Chemical formula 24】
R5：
【Chemical formula 25】
R6：
【Chemical formula 26】
R7：
【Chemical formula 27】
R8：
【Chemical formula 28】
R9：
【Chemical formula 29】
R10：Japan is spun（Strain）Company（TOYOBO CO.,LTD）バ イ ロ Application 200 processed
R11：Polyvinyl chloride（ナカライテスク（nacalai tesque）（Strain）System, numbering 36305-65）
R12：
【Chemical formula 30】
R13：
【Chemical formula 31】
<The evaluating characteristics of photoreceptor>
The mono-layer electronic photographic photoreceptor obtained by embodiment and comparative example is installed to eliminate scraper plate cleaner with
Except electric light and it transform peripheral speed 160mm/s printer as（FS-5300DN transformation apparatus, KYOCERA's office information system（Strain）
System）, transfer storage, stain have rated by following methods.Result is remembered in table 3,4.
（The measure of number occurs for stain）
Under 40 DEG C, 90%Rh environmental condition, continuous printing A4 paper（The high-quality PPC paper of Fuji-Xerox's system）10000.
Then, after placing 24 hours, the blank sheet of paper original copy of A4 paper is printed, the generation number of the black color dots occurred on the A4 paper is counted, presses
Evaluated according to following benchmark.
○：The generation of black color dots is less than 45 on every 1 A4 paper.
×：Black color dots occurs as more than 45 on every 1 A4 paper.
Under 25 DEG C, 50%Rh environmental condition, with continuous 1 hour printing A4 paper of the durable pattern of 5% lettering（Fuji-Xerox's system
High-quality PPC paper）, following evaluation has been carried out afterwards.
（Transfer storage）
The difference of blank sheet of paper portion current potential when blank sheet of paper portion current potential when closing transfer bias and opening transfer bias is evaluated as turning
Print storage current potential.
○：Less than 35V, ×：More than 35V
（Image）
Storage image evaluation shown in Fig. 3 is subjected to common printed, the generation of confirmation transfer storage with original copy on A paper
The presence or absence of.
○：Without or have but be hardly visible, ×：Have
（Sensitometry method）
Make surface potential powered to+800V, to photoreceptor using GENTEC company systems drum sensitivity test machine
The wavelength 780nm taken out from the white light of Halogen lamp LED using bandpass filter monochromatic light is irradiated on surface（The μ J/ of luminous intensity 0.5
cm2）, the surface potential detection by the time point for beginning to pass through 0.1 second from exposure is sensitivity.
○：Less than 150V, ×：More than 150V
【Table 3】
【Table 4】
Research more than can confirm that the charge generating material for meeting the present invention, electron transport materials, cavity conveying
The photoreceptor of the embodiment of the condition of material and binding resin is all sensitivity height, and can lower suppress stain and storage
Occur.On the other hand, the generation of stain and storage can be seen in the photoreceptor of comparative example, or can not say and fill in terms of sensitivity
Point.
And then according to the comparison of embodiment 1 and comparative example 1 and embodiment 11 and comparative example 2 and then according to comparative example 3
~4 result of study is understood, when including the binding resin of repetitive structure with specific ratio, is effectively suppressed using the present invention
The generation of stain.In addition, the content for confirming hole transporting material and electron transport materials according to comparative example 5~9 is less than this
Problem is produced in terms of storing with sensitivity during the scope of invention, hole transporting material and electricity are confirmed according to comparative example 10~11
Hole transporting material and electron transport materials crystallization when the content of son conveying material exceedes the scope of the present invention.
Claims (5)
1. a kind of mono-layer electronic photographic photoreceptor, possess on conductive base and electric charge generation material is comprised at least in same layer
Material, electron transport materials, the photosensitive layer of hole transporting material and binding resin, it is characterised in that the thickness of the photosensitive layer is
10~40 μm, the charge generating material includes TiOPc pigment, relative to the mass parts of binding resin 100, contains respectively
There are the mass parts of hole transporting material 50~120, the mass parts of electron transport materials 55~90, the binding resin is poly-
Carbonate resin,
When the polycarbonate resin is the copolymer being made up of following chemical formula 30 and following chemical formula 21, relative to described
The quality of chemical formula 21 contains 30 mass % or 50 mass the % chemical formula 30；When the polycarbonate resin is by following
During the copolymer that chemical formula 30 and following chemical formula 23 are formed, 30 mass % institute is contained relative to the quality of the chemical formula 23
State chemical formula 30；When the polycarbonate resin is the copolymer being made up of following chemical formula 30 and following chemical formula 24, phase
Contain the 30 mass % chemical formula 30 for the quality of the chemical formula 24；When the polycarbonate resin is by followingization
During the copolymer that formula 31 and following chemical formula 21 are formed, contain relative to the quality of the chemical formula 21 described in 15 mass %
Chemical formula 31,
R1:Chemical formula 21
R3:Chemical formula 23
R4:Chemical formula 24
R12:Chemical formula 30
R13:Chemical formula 31
2. mono-layer electronic photographic photoreceptor according to claim 1, it is characterised in that the polycarbonate resin glues
Average molecular weight is more than 25000.
3. mono-layer electronic photographic photoreceptor according to claim 1, it is characterised in that when the polycarbonate resin is
During the copolymer being made up of the chemical formula 30 and the chemical formula 21, the hole transporting material is following chemical formula 6, described
Electron transport materials are one in following chemical formula 14, chemical formula 17 or chemical formula 18；When the polycarbonate resin
For be made up of the chemical formula 30 and the chemical formula 23 copolymer when, the hole transporting material is following chemical formula 6, institute
It is following chemical formula 14 to state electron transport materials；When the polycarbonate resin is by the chemical formula 30 and the chemical formula 24
During the copolymer of composition, the hole transporting material is following chemical formula 6, and the electron transport materials are following chemical formula 14；
When the polycarbonate resin is the copolymer being made up of the chemical formula 31 and the chemical formula 21, the cavity conveying material
Expect that for following chemical formula 6, the electron transport materials be following chemical formula 14,
HT1：Chemical formula 6
ET1：Chemical formula 14
ET4：Chemical formula 17
ET5：Chemical formula 18
4. a kind of image processing system, it is characterised in that possess：Image carrier；Electro-mechanical part, for making described image supporting body
Surface it is powered；Exposure portion, for exposing the surface of powered described image supporting body, so as in described image supporting body
Electrostatic latent image is formed on surface；Development section, for being toner image by the latent electrostatic image developing；And transfer section, it is used for
The toner image is transferred to transfer printing body from described image supporting body, described image supporting body possesses claims 1 to 3
Any one of described in mono-layer electronic photographic photoreceptor.
5. image processing system according to claim 4, it is characterised in that described image forming apparatus does not have except electricity is single
Member and scraper plate cleaning unit, the development section use non-magnetic mono-component mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012241393A JP5696124B2 (en) | 2012-10-31 | 2012-10-31 | Electrophotographic photosensitive member and image forming apparatus |
| JP2012-241393 | 2012-10-31 |
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| CN103792802A CN103792802A (en) | 2014-05-14 |
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| JP6308100B2 (en) * | 2014-10-29 | 2018-04-11 | 京セラドキュメントソリューションズ株式会社 | Positively charged single layer type electrophotographic photosensitive member and image forming apparatus |
| CN113625534B (en) * | 2014-11-10 | 2024-04-02 | 三菱化学株式会社 | Electrophotographic photoreceptor, image forming apparatus, and coating liquid for forming photosensitive layer |
| JP6464863B2 (en) * | 2015-03-24 | 2019-02-06 | 富士ゼロックス株式会社 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus |
| JP6354668B2 (en) * | 2015-06-08 | 2018-07-11 | 京セラドキュメントソリューションズ株式会社 | Positively charged single layer type electrophotographic photosensitive member, process cartridge, and image forming apparatus |
| JP6354669B2 (en) * | 2015-06-08 | 2018-07-11 | 京セラドキュメントソリューションズ株式会社 | Positively charged single layer type electrophotographic photosensitive member, process cartridge, and image forming apparatus |
| CN106478529B (en) * | 2015-08-24 | 2019-04-02 | 郑建鸿 | Carrier generation materials and Organic Light Emitting Diode |
| EP3451064B1 (en) * | 2016-04-25 | 2021-06-23 | Kyocera Document Solutions Inc. | Electrophotographic photoreceptor, process cartridge and image-forming device |
| JP6565824B2 (en) * | 2016-08-10 | 2019-08-28 | 京セラドキュメントソリューションズ株式会社 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus |
| JP6729157B2 (en) * | 2016-08-10 | 2020-07-22 | 京セラドキュメントソリューションズ株式会社 | Electrophotographic photoreceptor, process cartridge, and image forming apparatus |
| JP6631721B2 (en) * | 2016-10-28 | 2020-01-15 | 京セラドキュメントソリューションズ株式会社 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus |
| JPWO2018154739A1 (en) | 2017-02-24 | 2019-03-07 | 富士電機株式会社 | Electrophotographic photoreceptor, method for producing the same, and electrophotographic apparatus using the same |
| CN108885417B (en) | 2017-02-24 | 2021-11-02 | 富士电机株式会社 | Photoreceptor for electrophotography, method for producing the same, and electrophotographic apparatus using the photoreceptor |
| WO2019017160A1 (en) * | 2017-07-21 | 2019-01-24 | 京セラドキュメントソリューションズ株式会社 | Electrophotographic photoreceptor, process cartridge, and image-forming apparatus |
| JP6760240B2 (en) * | 2017-09-28 | 2020-09-23 | 京セラドキュメントソリューションズ株式会社 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus |
| JP7004011B2 (en) * | 2018-01-19 | 2022-01-21 | 富士電機株式会社 | Photoreceptor for electrophotographic, its manufacturing method and electrophotographic equipment |
| JP6825586B2 (en) * | 2018-01-31 | 2021-02-03 | 京セラドキュメントソリューションズ株式会社 | Electrophotographic photosensitive member, process cartridge and image forming apparatus |
| JP6825584B2 (en) * | 2018-01-31 | 2021-02-03 | 京セラドキュメントソリューションズ株式会社 | Electrophotographic photosensitive member, process cartridge and image forming apparatus |
| JP6825585B2 (en) * | 2018-01-31 | 2021-02-03 | 京セラドキュメントソリューションズ株式会社 | Electrophotographic photosensitive member, process cartridge and image forming apparatus |
| WO2019159342A1 (en) | 2018-02-16 | 2019-08-22 | 富士電機株式会社 | Electrophotographic photoreceptor, method for manufacturing same, and electrophotographic device |
| JP6859968B2 (en) * | 2018-02-23 | 2021-04-14 | 京セラドキュメントソリューションズ株式会社 | Electrophotographic photosensitive member and image forming apparatus |
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| JP5696124B2 (en) | 2015-04-08 |
| CN103792802A (en) | 2014-05-14 |
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