CN108693720A - Electrophtography photosensor, image forming apparatus and handle box - Google Patents
Electrophtography photosensor, image forming apparatus and handle box Download PDFInfo
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- CN108693720A CN108693720A CN201810274715.4A CN201810274715A CN108693720A CN 108693720 A CN108693720 A CN 108693720A CN 201810274715 A CN201810274715 A CN 201810274715A CN 108693720 A CN108693720 A CN 108693720A
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- photosensitive layer
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- supporting body
- image forming
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
Abstract
The present invention provides Electrophtography photosensor, image forming apparatus and handle box.Electrophtography photosensor has conductive base and photosensitive layer.Photosensitive layer is single layer, and includes charge producing agent, cavity conveying agent, electron transporting agent, binding resin and fluorinated resin particle.Charge producing agent includes titanyl phthalocyanine, and 27.2 ° of Bragg angle (2 θ ± 0.2 °) of the titanyl phthalocyanine in CuK α characteristic X-ray difraction spectrums has main peak.If photosensitive layer is A to the absorbance of the light of wavelength 780nm, the thickness of photosensitive layer is T (μm), when a concentration of W (quality %) of the titanyl phthalocyanine in photosensitive layer, meets following formula (1):0.018≤A/(T·W)≤0.061(1).
Description
Technical field
The present invention relates to Electrophtography photosensor, image forming apparatus and handle boxes.
Background technology
Electrophtography photosensor (is filled as the image forming apparatus as supporting body for electrofax mode for example, printing
Set and all-in-one multifunctional machine) in.Electrophtography photosensor has photosensitive layer.Electrophtography photosensor such as laminated electronic is taken a picture
Photoreceptor and mono-layer electronic photographic photoreceptor.Laminated electronic electrophotographic photoconductor has photosensitive layer, which includes to have
Charge generates the charge generation layer of function and the charge transport layer with charge conveying function.Mono-layer electronic photographic photoreceptor has
The standby photosensitive layer with charge generation and charge conveying function.
In one example of Electrophtography photosensor, titanyl phthalocyanine is contained in photosensitive layer.
Invention content
However, the Electrophtography photosensor of above-mentioned example is not only difficult to inhibit the generation of Exposure memory, but also it is difficult to improve
Reactance voltage and filming resistance.
The present invention is in view of above-mentioned technical problem, and it is an object of the present invention to provide a kind of Electrophtography photosensor, can not only inhibit to expose
The generation of light memory, and reactance voltage and filming resistance can be improved.In addition, another object of the present invention is to provide one kind
It can inhibit to generate the undesirable image forming apparatus of image and handle box.
The Electrophtography photosensor of the present invention has conductive base and photosensitive layer.The photosensitive layer is single layer, and includes
Charge producing agent, cavity conveying agent, electron transporting agent, binding resin and fluorinated resin particle.The charge producing agent includes oxygen titanium
Phthalocyanine, 27.2 ° of Bragg angle (2 θ ± 0.2 °) of the titanyl phthalocyanine in CuK α characteristic X-ray difraction spectrums have main peak.If
The photosensitive layer is A to the absorbance of the light of wavelength 780nm, and the thickness of the photosensitive layer is T (μm), and the titanyl phthalocyanine is in institute
When stating a concentration of W (the quality %) in photosensitive layer, meet following formula (1):
0.018≤A/(T·W)≤0.061 (1)
The image forming apparatus of the present invention has:As supporting body, electro-mechanical part, exposure portion, development section and transfer section.The picture
Supporting body is above-mentioned Electrophtography photosensor.The electro-mechanical part makes the surface as supporting body charge.The electro-mechanical part
Electrification polarity is positive polarity.The exposure portion exposes the surface as supporting body charged, described as carrying
The surface of body forms electrostatic latent image.The latent electrostatic image developing is toner image with developer by the development section.It is described
Transfer section is by the toner image from described as supporting body is transferred to transfer printing body.
The handle box of the present invention has above-mentioned Electrophtography photosensor.
The Electrophtography photosensor of the present invention can not only inhibit the generation of Exposure memory, and can improve reactance voltage
And filming resistance.In addition, the image forming apparatus and handle box of the present invention can inhibit the undesirable generation of image.
Description of the drawings
Fig. 1 is the partial cross of an example of the structure of the Electrophtography photosensor involved by the first embodiment of the present invention
Figure.
Fig. 2 is the partial cross of an example of the structure of the Electrophtography photosensor involved by the first embodiment of the present invention
Figure.
Fig. 3 is the partial cross of an example of the structure of the Electrophtography photosensor involved by the first embodiment of the present invention
Figure.
Fig. 4 is an illustration of the image forming apparatus involved by second embodiment of the present invention.
Fig. 5 indicates to produce the image of afterimage of image.
Fig. 6 indicates the designed image of evaluation image.
Specific implementation mode
Hereinafter, detailed description of embodiments of the present invention, but the present invention is not by any of the following embodiments and the accompanying drawings
It limits, within the scope of the purpose of the present invention, is implemented again after can suitably changing.Also, exists and repetition is suitably omitted
The case where illustrating place, but therefore do not limit the main idea of invention.In addition, in this specification, sometimes after compound name
In addition " class " is referred to as the compound and its derivative.After compound name the feelings of polymer name are indicated plus " class "
Under condition, indicate that the repetitive unit of polymer is originated from the compound or its derivative.
Hereinafter, C1-C6 alkyl is straight-chain or branched, and it is unsubstituted.C1-C6 alkyl is for example:Methyl, second
Base, propyl, isopropyl, normal-butyl, sec-butyl, tertiary butyl, amyl, isopentyl, neopentyl and hexyl.
Hereinafter, fluorinated resin particle refers to the filler particles (resin particle) for including the resin with fluorine atom.In addition, sometimes
Resin with fluorine atom is recorded as fluororesin.
< first embodiments:Electrophtography photosensor >
To the Electrophtography photosensor involved by first embodiment of the invention (hereinafter, sometimes referred to as photoreceptor)
Structure illustrates.Fig. 1, Fig. 2 and Fig. 3 are an example i.e. phantoms of the structure of photoreceptor 1 of first embodiment.Such as figure
Shown in 1, photoreceptor 1 has conductive base 2 and photosensitive layer 3.Photosensitive layer 3 is the photosensitive layer of single layer.As shown in Figure 1, photosensitive layer 3
It can be directly arranged on conductive base 2.In addition, as shown in Fig. 2, photoreceptor 1 can for example have:Conductive base 2, in
Interbed 4 (such as priming coat) and photosensitive layer 3.In example shown in Fig. 2, photosensitive layer 3 is set to electric conductivity indirectly across middle layer 4
On matrix 2.In addition, as shown in figure 3, photoreceptor 1, which can have protective layer 5, is used as most surface layer.
Photosensitive layer 3 contains:Charge producing agent, cavity conveying agent, electron transporting agent, binding resin and fluorinated resin particle.Electricity
Lotus producing agent is included in 27.2 ° of oxygen titaniums with main peak of the Bragg angle (2 θ ± 0.2 °) in CuK α characteristic X-ray difraction spectrums
Phthalocyanine (hereinafter, sometimes referred to as Y-shaped oxygen titanium phthalocyanines).
In addition, setting photosensitive layer 3 to the absorbance of the light of wavelength 780nm as A, the thickness of photosensitive layer 3 is T (μm), Y-shaped oxygen titanium
When phthalocyanine a concentration of W (quality %) in the photosensitive layer at 3, meet following formula (1).
0.018≤A/(T·W)≤0.061 (1)
Here, the A/ (TW) of formula (1) can be regarded as according to Lambert-Beer's law and be indicated Y-shaped oxygen titanium phthalocyanines photosensitive
The index of dispersibility in layer 3.That is, the thickness T of photosensitive layer 3 and the concentration W of Y-shaped oxygen titanium phthalocyanines are certain situation
Under, when the dispersibility of Y-shaped oxygen titanium phthalocyanines is insufficient, incident light is difficult to be absorbed, suction of the photosensitive layer 3 to the light of wavelength 780nm
The value of luminosity A is in the trend to become smaller.On the other hand, if the favorable dispersibility of Y-shaped oxygen titanium phthalocyanines in the photosensitive layer at 3, incident light
It is easy to be absorbed, to which photosensitive layer 3 is in the trend to become larger to the value of the absorbance A of the light of wavelength 780nm.Therefore, according to formula (1)
A/ (TW) value, the dispersibility of Y-shaped oxygen titanium phthalocyanines in the photosensitive layer at 3 can be evaluated.
Photoreceptor 1 can inhibit the generation of Exposure memory.Its reason is presumed as follows.
It is 0.018 or more to make the index of the dispersibility of expression Y-shaped oxygen titanium phthalocyanines, the i.e. A/ (TW) of formula (1), is felt as a result,
The dispersibility of Y-shaped oxygen titanium phthalocyanines in photosphere 3 improves, and can efficiently convey the charge of Y-shaped oxygen titanium phthalocyanines generation.As a result, may be used
To think, the generation of residual charge in photosensitive layer 3 can be inhibited.
And it is possible to think, when forming photosensitive layer 3, in photosensitive layer coating fluid, fluorinated resin particle inhibits Y-shaped oxygen titanium
The agglutination of phthalocyanine.Accordingly, it is believed that photosensitive layer is improved with the dispersion stabilization of the Y-shaped oxygen titanium phthalocyanines in coating fluid,
As a result, it is possible to make the index of the dispersibility of the Y-shaped oxygen titanium phthalocyanines in obtained expression photosensitive layer 3, i.e. A/ (TW) is above-mentioned
In range.
As a result, since photoreceptor 1 contains Y-shaped oxygen titanium phthalocyanines and fluorinated resin particle, point of Y-shaped oxygen titanium phthalocyanines can will be indicated
The index of property is dissipated, i.e. A/ (TW) controls are in the preferred range that residual charge can be inhibited to generate, it is therefore contemplated that can
Inhibit the generation of Exposure memory.
In addition, photoreceptor 1 can improve reactance voltage.Its reason is presumed as follows.
For photoreceptor 1, due to containing fluorinated resin particle in photosensitive layer 3, the generation to leak electricity in photosensitive layer 3 is in drop
Low trend.And it is possible to think, the A/ (TW) by formula (1) is 0.061 hereinafter, can inhibit due to excess charges
Generation caused by leak electricity.Accordingly, it is believed that photoreceptor 1 can improve reactance voltage.
In addition, photoreceptor 1 can improve filming resistance.Its reason is presumed as follows.
The fluorinated resin particle contained in photosensitive layer 3 forms bumps on the surface of photoreceptor 1.As a result, leading to membranaceous attachment
The contact area of ingredient (more specifically, toner components, paper powder etc.) between photoreceptor 1 become smaller.Thus, it is possible to think,
The attachment of the ingredient of membranaceous attachment is caused to be inhibited, to which photoreceptor 1 can improve filming resistance.
From the aspect of the generation for further suppressing Exposure memory, the A/ (TW) of formula (1) is preferably 0.030 or more
0.061 hereinafter, more preferably 0.040 or more 0.061 hereinafter, further preferably 0.046 or more 0.061 or less.
Hereinafter, the element (conductive base, photosensitive layer and middle layer) to the photoreceptor involved by present embodiment carries out
Explanation.Also the manufacturing method of photoreceptor is illustrated.
[1. Dao electricity Xing Jiti ]
As long as conductive base can be used as the conductive base of photoreceptor, it is not particularly limited.Conductive base
The conductive base that at least surface element is made of conductive material can be used.Conductive base is for example:By conductive
The conductive base that material (conductive material) is constituted and the conductive base coated by conductive material.Conductive material example
Such as:Aluminium, iron, copper, tin, platinum, silver, vanadium, molybdenum, chromium, cadmium, titanium, nickel, palladium and indium.These conductive materials can be used alone,
Two or more use can also be combined.Two or more combinations such as alloy is (more specifically, aluminium alloy, stainless steel, brass
Deng).Be preferably from the aspect of mobility from charge from from photosensitive layer to conductive base is good, in these conductive materials aluminium and
Aluminium alloy.
The shape of conductive base can suitably be selected according to the structure of used image forming apparatus.Electric conductivity base
The shape of body is, for example, sheet and drum type.In addition, the thickness of conductive base can be fitted according to the shape of conductive base
Work as selection.
[2. Gan Guangceng ]
Photosensitive layer contains:Charge producing agent, cavity conveying agent, electron transporting agent, binding resin and fluorinated resin particle.It is photosensitive
Layer can also contain additive.The thickness T of photosensitive layer is for example at 5.0 μm or more 100.0 μm hereinafter, in order to easily by formula (1)
Within the above range, the thickness T of photosensitive layer is preferably 10.0 μm or more 50.0 μm hereinafter, being more preferably for the value control of A/ (TW)
20.0 μm or more 40.0 μm or less.
In order to easily by the control of the value of formula (1) A/ (TW) within the above range, photosensitive layer is to the light of wavelength 780nm
Absorbance A is preferably 1.20 or more 2.70 hereinafter, more preferably 1.30 or more 2.60 or less.Also, absorbance A can be by right
Concentration W of the Y-shaped oxygen titanium phthalocyanines in photosensitive layer and the type and the additive amount that add fluorinated resin particle in photosensitive layer etc. into
Row adjusts to control.
Hereinafter, to charge producing agent, cavity conveying agent, electron transporting agent, binding resin, fluorinated resin particle and as arbitrary
The additive of ingredient illustrates.
(charge producing agent)
Charge producing agent includes titanyl phthalocyanine (Y-shaped oxygen titanium phthalocyanines), and the titanyl phthalocyanine is in CuK α characteristic X-ray difraction spectrums
In 27.2 ° of Bragg angle (2 θ ± 0.2 °) there is main peak.Also, the main peak in CuK α characteristic X-ray difraction spectrums refers to:Phase
For wavelengthCuK α characteristic X-rays, be to have in 3 ° or more 40 ° or less of range in Bragg angle (2 θ ± 0.2 °)
There is the peak of the first big or second largest intensity.Y-shaped oxygen titanium phthalocyanines can also have other than Bragg angle (2 θ ± 0.2 °)=27.2 °
There is peak value.Titanyl phthalocyanine can be indicated by following chemical formula (CG1).Hereinafter, sometimes by the Y represented by following chemical formula (CG1)
Type titanyl phthalocyanine is recorded as charge producing agent (CG1).
[Change 1]
One example of the measurement method of CuK α characteristic X-ray difraction spectrums is illustrated.By sample (titanyl phthalocyanine)
It is filled into the sample of X-ray diffraction device (for example, Rigaku Corporation manufactures " RINT (Japan registration trade mark) 1100 ")
On product holder, in X-ray tube Cu, tube voltage 40kV, tube current 30mA and CuK α characteristic x-ray wavelengthsUnder conditions of,
Measure X-ray diffraction spectra.Measurement range (2 θ) is, for example, 3 ° or more 40 ° or less (initial angles:3°;Angular stop:40 °), scanning
Speed is, for example, 10 °/point.Main peak is determined according to obtained X-ray diffraction spectra, and reads the Bragg angle of main peak.
Y-shaped oxygen titanium phthalocyanines are for example manufactured by following process (a)~(g).
(a) thick oxytitanium phthalocyanine crystal is made to be dissolved in acid, the process for obtaining titanyl phthalocyanine solution
(b) titanyl phthalocyanine solution is added drop-wise in lean solvent, the process for obtaining the first wet cake
(c) process cleaned with the first wet cake of alcohol pair
(d) the first wet cake after cleaning is made to be dissolved in acid, the process for obtaining titanyl phthalocyanine solution
(e) the titanyl phthalocyanine solution of (d) is added drop-wise in lean solvent, the process for obtaining the second wet cake
(f) process cleaned with the second wet cake of water pair
(g) the second wet cake after cleaning is stirred in non-aqueous class solvent while heating, obtains the Y of titanyl phthalocyanine
The process of type crystal (Y-shaped oxygen titanium phthalocyanines)
In process (c), from from the aspect of improving dispersibility of the Y-shaped oxygen titanium phthalocyanines in photosensitive layer, it to be used for the first wet cake
The alcohol of cleaning be preferably at least one that is selected from the group that methanol, ethyl alcohol and isopropanol are constituted, more preferably methanol.
Charge producing agent preferably substantially contains only Y-shaped oxygen titanium phthalocyanines.But it is also possible to containing Y-shaped oxygen titanium phthalocyanines with
Outer photoreceptor charge producing agent.Such charge producing agent is for example:Phthalocyanine pigment, face other than Y-shaped oxygen titanium phthalocyanines
Material, disazo pigment, dithione pyrrolopyrrole (dithioketo-pyrrolopyrrole) pigment, without metal naphthalene phthalocyanine face
Material, metal naphthalene phthalocyanine pigment, square acid color, trisazo pigment, indigo pigments, azulene pigment, cyanine pigment, inorganic light-guide material
The powder of (for example, selenium, selenium-tellurium, selenium-arsenic, cadmium sulfide and non-crystalline silicon), pyralium salt, anthanthrene quinones pigment, triphenylmethane face
Material, intellectual circle's class pigment, toluene amines pigment, pyrazolines pigment and quinacridone-type pigments.Phthalocyanine other than Y-shaped oxygen titanium phthalocyanines
Class pigment is for example:Metal-free phthalocyanine is (for example, X-type metal-free phthalocyanine (X-H2)) and the titanyl phthalocyanine other than Y-shaped oxygen titanium phthalocyanines Pc
(more specifically, α types titanyl phthalocyanine, β type titanyl phthalocyanines etc.).Charge producing agent can be used alone, and can also combine two
Kind or more use.
X-type metal-free phthalocyanine can be indicated by following chemical formula (CG2).
[Change 2]
Relative to the total amount of charge producing agent, the contents of Y-shaped oxygen titanium phthalocyanines is preferably 80 mass % or more, and more preferably 90
Quality % or more, especially preferably 100 mass %.
In addition, from while further suppressing Exposure memory generation, from the aspect of further increasing reactance voltage, Y-shaped oxygen
Concentration W of the titanium phthalocyanines in photosensitive layer is preferably 0.50 mass % or more, 4.00 mass % hereinafter, more preferably 0.80 mass %
The above 3.50 mass % is hereinafter, further preferably 0.80 mass % or more, 1.80 mass % are hereinafter, especially preferably 1.00 matter
Measure % or more 1.80 mass % or less.
From the aspect of efficiently producing charge, relative to 100 mass parts of binding resin, the content of charge producing agent is preferred
Below mass part for more than 0.1 mass parts 50, more than more preferably 0.5 mass parts 30 is below mass part, especially preferably 0.5 matter
It is below mass part to measure part or more 4.5.
(cavity conveying agent)
Cavity conveying agent for example, diamine derivative (more specifically, N, N, N ', N '-tetraphenyls phenylenediamine derivative, N, N,
N ', N '-tetraphenyl naphthylenediamine derivative, N, N, N ', N '-tetraphenyl phenanthrylene diamines (N, N, N ', N '-tetraphenyl
Phenanthrylene diamine) derivative etc.);Furodiazole compound is (more specifically, 2,5- bis- (4- methyl amino phenyls
Base) -1,3,4- oxadiazoles etc.);Styrene compound (more specifically, 9- (4- lignocaines styryl) anthracene etc.);Carbazole
Class compound (more specifically, polyvinyl carbazole etc.);Organopolysilane compound;Pyrazoline compounds are (more specifically, 1-
Phenyl -3- (to dimethylaminophenyl) pyrazoline etc.);Hydrazone compounds;Benzazole compounds;Dislike azole compounds;Different evil
Azole compounds;Thiazole compound;Thiadiazole compound;Glyoxaline compound;Pyrazole compound;Triazole type chemical combination
Object.These cavity conveying agent can be used alone, and can also combine two or more use.
From the aspect of efficiently conveying hole, general formula (HT1) institute preferably as shown below in these cavity conveying agent
Compound represented by the compound and general formula (HT2) of expression.
[Change 3]
In general formula (HT1), R22,R23And R24It is respectively independent, indicate C1-C6 alkyl.D1, d2 and d3 are respectively independent, indicate 0
Above 5 integer below.In the case that d1 indicates 2 or more 5 or less integers, several R22It may be the same or different.D2 tables
In the case of showing 2 or more 5 or less integers, several R23It may be the same or different.D3 indicates the feelings of 2 or more 5 or less integers
Under condition, several R24It may be the same or different.R25Indicate C1-C6 alkyl or hydrogen atom.
[Change 4]
In general formula (HT2), R5,R6,R7And R8It is respectively independent, indicate C1-C6 alkyl or hydrogen atom.
The compound represented by compound chemical formula (HT1-1) for example below represented by general formula (HT1) is (hereinafter, have
When be recorded as cavity conveying agent (HT1-1)).
[Change 5]
The compound represented by compound chemical formula (HT2-1) for example below represented by general formula (HT2) is (hereinafter, have
When be recorded as cavity conveying agent (HT2-1)).
[Change 6]
Relative to 100 mass parts of binding resin, the content of cavity conveying agent be preferably 10 mass parts or more, 200 mass parts with
Under, it is more than more preferably 10 mass parts that 100 is below mass part.
(electron transporting agent)
Electron transporting agent is for example:Quinones, diimide compounds, hydrazone compounds, malononitrile derivative,
Thiapyran class compound, trinitro- thioxanthene ketone class compound, 3,4,5,7- tetranitros -9-Fluorenone class compound, dinitro anthracene class
Close object, dinitro acridine compound, tetracyanoethylene, 2,4,8- trinitro- thioxanthones, dinitrobenzene, dinitro acridine, amber
Acid anhydrides, maleic anhydride and dibromomaleic acid acid anhydride.Quinones is for example:Biphenyl quinones, azo quinones, anthraquinone
Class compound, naphthoquinone compound, nitroanthracene quinones and dinitroanthraquinone class compound.These electron transporting agents can be with
One kind is used alone, two or more can also combine to use.
From the aspect of efficiently conveying electronics, general formula (ET1) institute preferably as shown below in these electron transporting agents
The compound of expression.
[Change 7]
In general formula (ET1), R11With R12It is respectively independent, indicate C1-C6 alkyl.
The compound represented by compound chemical formula (ET1-1) for example below represented by general formula (ET1) is (hereinafter, have
When be recorded as electron transporting agent (ET1-1)).
[Change 8]
Relative to 100 mass parts of binding resin, the content of electron transporting agent be preferably 5 mass parts or more, 100 mass parts with
Under, more than more preferably 10 mass parts 80 is below mass part, and more than especially preferably 30 mass parts 60 is below mass part.
(binding resin)
Binding resin is for example:Thermoplastic resin, thermosetting resin and light-cured resin.Thermoplastic resin is for example:Poly- carbonic acid
Ester resin, polyarylate resin, styrene-butadiene copolymer, styrene-acrylonitrile copolymer, Styrene maleic acid are total
Polymers, acrylate copolymer, Styrene-acrylic copolymer, polyvinyl resin, ethylene-vinyl acetate copolymer, chlorination are poly-
Vinyl, Corvic, acrylic resin, ionomer resin, vinyl chloride-vinyl acetate copolymer, alkyd resin,
Polyamide, polyurethane resin, polysulfone resin, diallyl phthalate resin, ketone resin, polyvinyl alcohol contracting
Butyral resin, polyester resin and polyether resin.Thermosetting resin is for example:Silicone resin, epoxy resin, phenolic resin, ureaformaldehyde tree
Fat and melmac.Light-cured resin is for example:Epoxy-acrylic resinoid (acrylic acid adduct of epoxide) and
Polyurethane-acrylate analog copolymer (acrylic acid adducts of urethanes).These binding resins can be used alone one
Kind, it two or more can also combine to use.
It is excellent photosensitive from the harmony for obtaining processability, mechanical performance, optical property and wear resistance in these resins
From the aspect of layer, preferably polycarbonate resin.Polycarbonate resin is for example:The poly- carbon of bisphenol Z type represented by following chemical formula
Sour fat resin, bisphenol Z c-type polycarbonate resin, bisphenol-c type polycarbonate resin and bisphenol A polycarbonate resin.
[Change 9]
The viscosity average molecular weigh of binding resin is preferably 30,000 or more, more preferably 35, and 000 or more 55,000 or less.If
The viscosity average molecular weigh of binding resin is 35,000 or more, then is easy to improve the wear resistance of photosensitive layer.If binding resin is viscous equal
Molecular weight is 55,000 hereinafter, when then forming photosensitive layer, and binding resin is easily soluble in solvent, and the viscosity of photosensitive layer coating fluid is not
It can become excessively high.To be easy to form photosensitive layer.
(fluorinated resin particle)
It constitutes the fluororesin such as polyflon (hereinafter, sometimes referred to as PTFE resin) of fluorinated resin particle, gather
Trifluorochlorethylene resin, polyvinylidene fluoride resin and polyfluoroethylene resin.Fluorinated resin particle can be only by these fluororesin
A kind of composition can also be made of two kinds or more of fluororesin.In addition, photosensitive layer can contain one or two or more kinds of fluorine trees
Fat particle.
Relative to the binding resin of 100.0 mass parts, the content of fluorinated resin particle is preferably 0.5 mass parts or more, 30.0 matter
Part is measured hereinafter, more than more preferably 5.0 mass parts 15.0 below mass part.If the content of fluorinated resin particle is relative to 100.0 matter
The binding resin for measuring part is 0.5 mass parts or more, then can further increase filming resistance.If the content of fluorinated resin particle is opposite
It is 30.0 below mass part in the binding resin of 100.0 mass parts, then can inhibits the generation of solid foreign materials in photosensitive layer, from
And the bad order of photoreceptor can be inhibited.
From the aspect of further increasing filming resistance, the average primary particle diameter of fluorinated resin particle is preferably 0.1 μm or more
10.0 μm hereinafter, more preferably 0.5 μm or more 8.5 μm or less.
The average primary particle diameter of fluorinated resin particle is for example measured by following methods.It measures sample and uses several fluorine trees
Fat particle (powder).To measuring N of the sample at -196 DEG C2Adsorption isotherm measures.According to Brunauer, Emmett and
The method of Teller, and according to the t curve methods based on De Boer to obtained N2Adsorption isotherm is evaluated.It calculates as a result,
Measure the specific surface area of sample.It calculates according to formula " d=6/pS " according to the specific surface area of obtained measurement sample and measures sample
The grain size of product.In formula, d indicates to measure the grain size of sample, and ρ indicates to measure the density of sample, and S indicates to measure the specific surface of sample
Product.Using the grain size of the measurement sample calculated as the average primary particle diameter of fluorinated resin particle.In addition, measuring fluorinated resin particle
The other methods of average primary particle diameter for example have calculates the method measured based on image.Specifically, it is clapped with transmission electron microscope
The image of a considerable amount of fluorinated resin particles is taken the photograph, the primary particle size of each fluorinated resin particle in image is measured.By that will measure
The number of the sum of primary particle size gone out divided by the fluorinated resin particle measured, to calculate the average primary particle diameter of fluorinated resin particle.
Photosensitive layer can contain the filler particles other than fluorinated resin particle as needed.Filler other than fluorinated resin particle
Grain is for example:Silica dioxide granule, the particle comprising silicone resin, comprising polyphenylene sulfide (hereinafter, sometimes referred to as PPS trees
Fat) particle and metal oxide particle.Photosensitive layer can be individually containing the filler particles other than these fluorinated resin particles one
Kind, two kinds or more can also be contained.Relative to the total amount of filler particles, the content of fluorinated resin particle be preferably 80 mass % with
On, more preferably 90 mass % or more, especially preferably 100 mass %.
(additive)
Photosensitive layer is as needed, can also contain various additives.Additive is for example:Degradation inhibitor is (for example, anti-oxidant
Agent, radical scavenger, singlet state quencher and ultra-violet absorber), softening agent, surface modifier, incremental agent, thickener,
Dispersion stabilizer, wax, receptor, donor, surfactant, plasticizer, sensitizer and levelling agent.Antioxidant is for example:Hindered phenol
(for example, di-tert-butyl p-cresol), hindered amine, p-phenylenediamine, aromatic yl paraffin, hydroquinone, spiral shell benzodihydropyran
(spirochroman), spiral shell indone (spiroindanone) and their derivative, organosulfur compound and organophosphor chemical combination
Object.
(combination of material)
In order to inhibit the generation of Exposure memory, and further increase reactance voltage and filming resistance, it is preferred that hole is defeated
It is at least one party of cavity conveying agent (HT1-1) and cavity conveying agent (HT2-1) to send agent, constitutes the fluororesin of fluorinated resin particle and is
PTFE resin.Similarly, it is further preferred that cavity conveying agent be cavity conveying agent (HT1-1) and cavity conveying agent (HT2-1) extremely
A few side, the fluororesin for constituting fluorinated resin particle is PTFE resin, and electron transporting agent is electron transporting agent (ET1-1).
[3. Zhong Jianceng ]
As described above, photoreceptor can have middle layer (for example, priming coat).Middle layer for example containing:Inorganic particle and
Resin (middle layer resin) for middle layer.The presence of middle layer can maintain to can inhibit this degree of electric leakage generation
While state of insulation, keep the electric current flowing generated when exposure photoreceptor smooth, so as to inhibit the rising of resistance.
Inorganic particle is for example:The particle of metal (more specifically, aluminium, iron, copper etc.), metal oxide are (more specifically, dioxy
Change titanium, aluminium oxide, zirconium oxide, tin oxide, zinc oxide etc.) particle and nonmetal oxide (more specifically, silica etc.)
Particle.These inorganic particles can be used alone, and two or more can also combine to use.In addition, inorganic particle
It can implement to be surface-treated.
As long as middle layer resin can be used in forming middle layer, it is not particularly limited.
[4. the Zhi Zaofangfa ] of photoreceptor;
The manufacturing method of photoreceptor is illustrated.The manufacturing method of photoreceptor is for example with photosensitive layer formation process.Sense
In photosphere formation process, the photosensitive layer coating fluid for being used to form photosensitive layer is prepared.Then, by photosensitive layer coating solution in
On conductive base.Then, it is dried by method appropriate, the solvent that will contain in the photosensitive layer coating fluid being coated with
At least part removal, to form photosensitive layer.Photosensitive layer with coating fluid for example comprising:Charge producing agent, cavity conveying agent, electricity
Sub- agent delivery, binding resin, fluorinated resin particle and solvent.Such photosensitive layer coating fluid is by by charge producing agent, hole
Agent delivery, electron transporting agent, binding resin and fluorinated resin particle are dissolved or dispersed in solvent to prepare.Photosensitive layer coating fluid root
According to needs, various additives can also be added.
Hereinafter, photosensitive layer formation process is described in detail.As long as the solvent contained in photosensitive layer coating fluid can
So that each ingredient contained in photosensitive layer coating fluid is dissolved or is disperseed, is not particularly limited.Solvent is for example:Alcohol is (more
Body, methanol, ethyl alcohol, isopropanol, butanol etc.), aliphatic hydrocarbon (more specifically, n-hexane, octane, hexamethylene etc.), aromatic hydrocarbon
(more specifically, benzene,toluene,xylene etc.), halogenated hydrocarbon are (more specifically, dichloromethane, dichloroethanes, carbon tetrachloride, chlorobenzene
Deng), ether (more specifically, dimethyl ether, diethyl ether, tetrahydrofuran, glycol dimethyl ether, diethylene glycol dimethyl ether etc.), ketone it is (more specific
Ground, acetone, methyl ethyl ketone, cyclohexanone etc.), ester (more specifically, ethyl acetate, methyl acetate etc.), dimethylformaldehyde, diformazan
Base formamide and dimethyl sulfoxide (DMSO).These solvents may be used singly or in combination of two or more to use.These solvents
In, it is preferable to use halogen-free solvent.
Photosensitive layer, by mixing each ingredient, and is scattered in solvent to prepare with coating fluid.Mixing or dispersion for example may be used
With with ball mill, roller mill, ball mill, grater, paint shaker or ultrasonic disperser.
In order to improve the dispersibility of each ingredient, for example, surfactant can also be contained in photosensitive layer coating fluid.
As long as the method being coated with coating fluid to photosensitive layer is capable of the side of equably photosensitive coated layer coating fluid
Method is not particularly limited.Coating method is for example:Dip coating, spray coating method, spin-coating method and stick coating method.
As long as at least part of method of the solvent contained in removal photosensitive layer coating fluid makes photosensitive layer be coated with
The method of at least part evaporation of solvent in liquid, is not particularly limited.Minimizing technology for example has:Heating, decompression and
Heating is used in combination with decompression.More specifically, such as the side for being heat-treated (heated-air drying) with high-temperature drier, pressure Reduction Dryer
Method.It is 40 DEG C or more 150 DEG C or less and the time is 120 minutes 3 minutes or more or less that heat treatment condition, which is, for example, temperature,.
In addition, the manufacturing method of photoreceptor is as needed, there can also be the process etc. for forming middle layer.Form middle layer
Process can suitably select known method.
The photoreceptor of present embodiment described above can not only inhibit to generate Exposure memory, and can improve anti-electricity
Pressure property and filming resistance, therefore, it is possible to be preferably used for various image forming apparatuses.
< second embodiments:Image forming apparatus >
Hereinafter, for color image forming device in a series arrangement, the image involved by second embodiment is formed
One mode of device illustrates.Fig. 4 is an illustration of the image forming apparatus involved by second embodiment.Second embodiment party
Image forming apparatus 100 involved by formula has:As supporting body 30, electro-mechanical part 42, exposure portion 44, development section 46 and transfer section
48.As supporting body 30 is the photoreceptor involved by first embodiment.Electro-mechanical part 42 makes the surface as supporting body 30 charge.Electrification
The electrification polarity in portion 42 is positive polarity.Exposure portion 44 make to have charged as the surface of supporting body 30 exposes, as supporting body 30
Surface formed electrostatic latent image.Latent electrostatic image developing is toner image by the developer of development section 46.Transfer section 48 makes toner
As being transferred to transfer printing body, i.e. recording medium P from as supporting body 30.More than, the image involved by second embodiment is formed
The summary of device 100 is illustrated.
Image forming apparatus 100 involved by second embodiment can inhibit due to Exposure memory, electric leakage and membranaceous attached
It and causes the image generated bad.Its reason is presumed as follows.Image forming apparatus 100 involved by second embodiment has
Photoreceptor involved by first embodiment is used as supporting body 30.Photoreceptor involved by first embodiment can not only
Enough inhibit the generation of Exposure memory, and reactance voltage and filming resistance can be improved.Therefore, involved by second embodiment
Image forming apparatus 100 can inhibit the image caused by Exposure memory, electric leakage and film forming bad.Hereinafter, remembering to exposure
Image is bad caused by recalling illustrates.
In image forming course generate Exposure memory when, as supporting body 30 surface on circle of origin (be formed continuously image
In the case of it is arbitrary 1 circle) one circle exposure area compared with the non-exposed areas that circle of origin one encloses, next circle band of circle of origin
Current potential when electric has the tendency that in reduction.Therefore, the exposure area of circle of origin is in the developing procedure of next circle, than it is normal when more
It is easy to attract positively charged toner.As a result, in next circle of circle of origin, it is easy to form the image portion (exposure for reflecting circle of origin
Light region) image.It is by exposing that image is bad as the image for the image portion that next circle formation reflects circle of origin
Image is bad (hereinafter, sometimes referred to as afterimage of image) caused by memory.
With reference to Fig. 5, afterimage of image is illustrated.Fig. 5 indicates to produce the image 60 of afterimage of image.Image 60 includes area
Domain 62 and region 64.Region 62 is comparable to the region as the circle of supporting body 1 (1 circle of circle of origin), and region 64 is also comparable to picture
The region of the circle of supporting body 1 (lower 1 circle of circle of origin).Region 62 includes image 66.Image 66 is made of the solid image of square.
Region 64 includes image 68 and image 69.Image 68 is the half tone image of square.Image 69 is to remove image in region 64
The half tone image in 68 region.In addition, the designed image in region 64 is comprehensive half tone image.As shown in figure 5, image 68 with
Image 69 is compared, and image color is denseer.Image 68 reflects the exposure area in region 62, produces denseer than designed image concentration
Image it is bad (afterimage of image).
Hereinafter, with reference to Fig. 4, each portion of image forming apparatus 100 is described in detail.
Image forming apparatus 100 uses direct transfer modes.That is, in image forming apparatus 100, transfer section 48 1
While the surface as supporting body 30 is made to be contacted with recording medium P, toner image is transferred to recording medium P on one side.In general, using straight
It connects in the image forming apparatus of transfer modes, due to being contacted with recording medium as supporting body, subtle ingredient is easy to be attached to as holding
The surface of carrier, to easy to produce membranaceous attachment.However, the image forming apparatus 100 involved by second embodiment has
Photoreceptor involved by first embodiment is used as supporting body 30.Photoreceptor involved by first embodiment it is resistance at
Film property is excellent.Therefore, have the photoreceptor involved by first embodiment to be used as supporting body 30, even with directly turning
The image forming apparatus 100 of India side formula can also inhibit the image caused by membranaceous attachment bad.
Image forming apparatus 100 has image forming unit 40a, 40b, 40c and 40d, transfer belt 50 and fixing section 54.With
Under, in the case where needing not distinguish between, image forming unit 40a, 40b, 40c and 40d are recorded as image forming unit 40.
Image forming unit 40 has:As supporting body 30, electro-mechanical part 42, exposure portion 44, development section 46, transfer section 48 and
Clean the cleaning part 52 as 30 surface of supporting body.Cleaning part 52 is cleaning scraper.In general, the image for having cleaning scraper forms dress
In setting, by being contacted with cleaning scraper as supporting body, as supporting body is easy to be charged by friction.Therefore, has the image of cleaning scraper
In forming apparatus, the charge residue generated due to being charged by friction easy tos produce Exposure memory in as supporting body.However, the
Image forming apparatus 100 involved by two embodiments has the photoreceptor involved by first embodiment, is used as carrying
Body 30.Photoreceptor involved by first embodiment can inhibit the generation of Exposure memory.Therefore, has first embodiment institute
The photoreceptor being related to is used as supporting body 30 can also inhibit to expose even having the image forming apparatus 100 of cleaning scraper
Image caused by light memory is bad.
As supporting body 30 is set as (counter clockwise direction) to revolve in the direction of the arrow in the middle position of image forming unit 40
Turn.Around as supporting body 30, since the upstream side as the direction of rotation of supporting body 30 on the basis of electro-mechanical part 42 according to
Secondary setting electro-mechanical part 42, exposure portion 44, development section 46, transfer section 48 and cleaning part 52.In addition, may be used also in image forming unit 40
To have de-power unit (not shown).
Respectively by image forming unit 40a~40d, the recording medium P in transfer belt 50 is overlapped several face successively
The toner image of color (for example, black, cyan, magenta and yellow these four colors).
Electro-mechanical part 42 is charged roller.Charged roller is contacted with the surface as supporting body 30 on one side, is made on one side as supporting body 30
Surface is charged.In general, having in the image forming apparatus of the electro-mechanical part of the contacts such as charged roller electrification mode, easy to produce due to exposing
Image is bad caused by light is remembered and leaks electricity.However, the image forming apparatus 100 involved by second embodiment has first
Photoreceptor involved by embodiment is used as supporting body 30.Photoreceptor involved by first embodiment can either inhibit
The generation of Exposure memory, and reactance voltage can be improved.Therefore, even if the electro-mechanical part 42 that image forming apparatus 100 has is band
Electric roller can also inhibit the image caused by Exposure memory and electric leakage bad.In addition, the electrification of other contact electrification modes
For example there is band brush in portion.In addition, electro-mechanical part can also be cordless.The electro-mechanical part of cordless is for example:Without grid electricity
Polar form electro-mechanical part (Corotron) and there is grid electrode type electro-mechanical part (Scorotron)。
The voltage that electro-mechanical part 42 is applied is not particularly limited.The voltage that electro-mechanical part 42 is applied such as DC voltage is handed over
Galvanic electricity is pressed and overlapping voltage (voltage that alternating voltage has been overlapped on DC voltage), more preferably DC voltage.DC voltage with
Alternating voltage and overlapping voltage are compared, and have superiority as shown below.When electro-mechanical part 42 applies DC voltage, due to applying
It is certain in the voltage value as supporting body 30, therefore be easy to make uniformly to be charged to certain potentials as supporting body 30.Also,
When electro-mechanical part 42 applies DC voltage, trend that the wear extent of photosensitive layer is reduced.As a result, it is possible to form preferable figure
Picture.
Exposure portion 44 make to have charged as the surface of supporting body 30 exposes.It is formed as a result, on the surface as supporting body 30 quiet
Electric sub-image.Electrostatic latent image is formed based on the image data being input in image forming apparatus 100.
Latent electrostatic image developing is toner image by the developer of development section 46.Developer can be monocomponent toner,
It can be two-component developing agent.Developer can contain polymerization toner.In general, when developer includes polymerization toner, residual
It is difficult to remove by cleaning part (for example, cleaning scraper) as the polymerization toner on supporting body surface after image is formed.The feelings
Under condition, subtle ingredient is easy to be attached to the surface as supporting body, and generates membranaceous attachment.However, involved by second embodiment
Image forming apparatus 100 have the photoreceptor involved by first embodiment, be used as supporting body 30.Due to the first implementation
The filming resistance of photoreceptor involved by mode is excellent, therefore, even if in the case that developer includes polymerization toner, second is real
The generation of film forming can be inhibited by applying the image forming apparatus 100 involved by mode also.
Transfer belt 50 is as conveying recording medium P between supporting body 30 and transfer section 48.Transfer belt 50 is endless belt.Transfer
Band 50 is set as (clockwise direction) rotating in the direction of arrows.
Transfer section 48 is by the toner image to be developed by development section 46 from the surface transfer as supporting body 30 to recording medium
P.When toner image as supporting body 30 from when being transferred to recording medium P, as supporting body 30 is contacted with recording medium P.Transfer section 48
E.g. transfer roll.
Fixing section 54 by the unfixed toner image that recording medium P is transferred to by transfer section 48 carry out heating and/or
Pressurization.Fixing section 54 is, for example, heating roller and/or pressure roller.By being heated and/or being pressurizeed to toner image, toner image
It is fixed in recording medium P.As a result, image is formed in recording medium P.
More than, an example of the image forming apparatus involved by second embodiment is illustrated, second embodiment
Involved image forming apparatus is not limited to above-mentioned image forming apparatus 100.For example, above-mentioned image forming apparatus 100 is
The image forming apparatus of series system, but the image forming apparatus involved by second embodiment is without being limited thereto, can also use
Revolution mode (Rotary modes) etc..It is formed in addition, image forming apparatus involved by second embodiment can be monochrome image
Device.In this case, image forming apparatus for example can only have 1 image forming unit.In addition, involved by second embodiment
And image forming apparatus intermediate transfer mode may be used.Image forming apparatus involved by second embodiment is using intermediate
In the case of transfer modes, intermediate transfer belt is equivalent to transfer printing body.
< third embodiments:Handle box >
Handle box involved by third embodiment has the photoreceptor involved by first embodiment.Then, with reference to figure
4, the handle box involved by third embodiment is illustrated.
Handle box includes the part of blocking.The part of blocking includes as supporting body 30.The part of blocking is in addition to containing
Have as that other than supporting body 30, can also contain from electro-mechanical part 42, exposure portion 44,52 structure of development section 46, transfer section 48 and cleaning part
At group at least one for selecting.Handle box is for example equivalent to each image forming unit 40a~40d.Handle box can also have
Standby de-power unit (not shown).Handle box is for example designed as relative to 100 disassembly ease of image forming apparatus.The handle box of the situation
It is easily processed, in the case of the deteriorations such as sensitivity characteristic as supporting body 30, including as supporting body 30 inside can be easily
And it is promptly replaced.
More than, the handle box involved by third embodiment is illustrated.Processing involved by third embodiment
Box is used as by having the photoreceptor involved by first embodiment as supporting body, can be inhibited due to Exposure memory, electric leakage
And image is bad caused by membranaceous attachment.
[Embodiment]
Hereinafter, by embodiment, the present invention will be described in more detail.Also, the present invention is not by following embodiments
It limits.
The material > used in < Examples and Comparative Examples
Prepare following charge producing agent, cavity conveying agent, electron transporting agent and filler particles, is used as photosensitive for manufacturing
The material of layer.
[Charge Chan Shengji ]
Prepare the charge producing agent (CG1) described in first embodiment, is used as charge producing agent.Real by first
Apply in the CuK α characteristic X-ray difraction spectrums that method described in mode measures, charge producing agent (CG1) Bragg angle (2 θ ±
0.2 °) 27.2 ° have main peak.In addition, charge producing agent (CG1) be by the process (a) described in first embodiment~
(g) the Y-shaped oxygen titanium phthalocyanines manufactured.Also, in the process (c) of the manufacturing process of charge producing agent (CG1), first is cleaned with methanol
Wet cake.
[Cavity conveying Ji ]
Prepare the cavity conveying agent (HT1-1) described in first embodiment and cavity conveying agent (HT2-1), is used as sky
Cave agent delivery.
[Electricity Zi Shusongji ]
Prepare the electron transporting agent (ET1-1) described in first embodiment, is used as electron transporting agent.
[Tian Liaokeli ]
Prepare filler particles (F1)~(F14) shown in table 1.Table 1 shows filler particles (the F1)~type of (F14), material
Matter, average primary particle diameter, kind and manufacturer.In addition, " AEROSIL ", " Toray Pearl " in " kind " column of table 1
And " Ruburon " is Japan registration trade mark.
The manufacture > of < photoreceptors
Photoreceptor (A-1)~(A-13) and (B-1)~(B-9) is manufactured by method as shown below.[Photoreceptor (A-
1) Zhi Zao ]
It is added into container:Charge producing agent (CG1) (3.0 mass parts), cavity conveying agent (HT1-1) (60.0 mass
Part), electron transporting agent (ET1-1) (40.0 mass parts), filler particles (F7) (5.0 mass parts), as the bisphenol Z of binding resin
Type polycarbonate resin (Mitsubishi Gas Chemical Co., Ltd manufactures " PCZ500 ", viscosity average molecular weigh 50,000) (100.0 mass
Part) and as solvent tetrahydrofuran (800.0 mass parts).With rodlike ultrasonic disperser, by the material and solvent in container
Mixing 2 minutes, makes material be scattered in solvent.Ball mill is used again, and material and solvent are mixed 50 hours, so that material is scattered in molten
Agent.Photosensitive layer coating fluid is obtained as a result,.Using dip coating, use coating solution in as conductive base the photosensitive layer
Aluminum drum type supporting mass on.At 100 DEG C, by the photosensitive layer being coated with coating fluid heated-air drying 40 minutes.It is leading as a result,
Photosensitive layer (30 μm of thickness) is formed on electrical matrix, obtains single-layer type photoreceptor, i.e. photoreceptor (A-1).The sense of photoreceptor (A-1)
The concentration W of charge producing agent (CG1) in photosphere is 1.44 mass %.
[The Zhi Zao ] of photoreceptor (A-2)~(A-13) and (B-1)~(B-9);
Other than following aspects have altered, photoreceptor (A- is manufactured by the identical method with manufacture photoreceptor (A-1)
2)~(A-13) and (B-1)~(B-9).
(change place)
The concentration W of charge producing agent (CG1) used is changed to concentration shown in table 2 when manufacturing photoreceptor (A-1).Manufacture sense
Cavity conveying agent (HT1-1) used is changed to cavity conveying agent shown in table 2 when body of light (A-1).Manufacture photoreceptor (A-1) when institute
Filler particles (F7) and its content are changed to filler particles and its content shown in table 2.In addition, in table 2, " filler particles " one
F1~the F14 of " type " on column indicates filler particles (F1)~(F14) respectively.
[Table 2]
The measurement > of < absorbance As
By following methods, to photoreceptor (A-1)~(A-13) and the respective photosensitive layers of (B-1)~(B-9) to wavelength
The absorbance A of the light of 780nm measures.Preparation forms the photosensitive layer of photoreceptor (A-1)~(A-13) and (B-1)~(B-9)
The photosensitive layer coating fluid of Shi Suoyong.By each photosensitive layer coating solution after on lens type projection sheet material (OHP sheet materials),
Heated-air drying 40 minutes at 100 DEG C.The membranaceous sample that photosensitive layer is provided on OHP sheet materials is obtained as a result,.Also, it is applying
After each photosensitive layer coating fluid of cloth, each photosensitive layer is adjusted with wire bar so that the thickness after heated-air drying is 30 ± 0.8
μm.In addition, the thickness T of the photosensitive layer of each membranaceous sample is measured by eddy current type film thickness gauge.For obtained membranaceous sample
Product measure the extinction of the light relative to wavelength 780nm with spectrophotometer (Hitachi Co., Ltd manufactures " U-3000 ")
Spend A.Also, when measuring, the absorbance spectrum of above-mentioned OHP sheet materials is measured in advance, the absorbance spectrum of obtained OHP sheet materials is used
Make baseline.The measurement result of the absorbance A of each photosensitive layer together with the thickness T of the photosensitive layer of each membranaceous sample such as table 3 and
Shown in table 4.
The evaluation > of < photoreceptors
Evaluate 1 (the evaluation) ] about Exposure memory;
For evaluation 1, photoreceptor (A-1)~(A-13) and (B-1)~(B-9) is evaluated respectively with image forming apparatus
Image caused by Exposure memory is bad.Image forming apparatus uses Kyocera Document Solutions Inc. to manufacture " FS-
The modified machine of C5350DN ".The image forming apparatus uses direct transfer modes.In addition, the image forming apparatus has contact
The charged roller and cleaning scraper of mode.In addition, developer uses the monocomponent toner comprising polymerization toner, (kyocera is done
Common information system Co., Ltd. manufacture trial production sample).Recording medium uses Kyocera Document Solutions Inc. to sell
It sells " kyocera office information system brand paper VM-A4 " (A4 sizes).
First, each photoreceptor is installed to image forming apparatus, adjusts the electrified voltage of electro-mechanical part, when will be non-exposed with
The electric potential of the corresponding photoreceptor in development section position is set as+570V ± 10V.Then, in 10 DEG C of temperature and humidity 20%RH
In the environment of, carry out printing test, that is, with 15 seconds intervals by printed patterns (image color 4%) to 1,000 recording medium
On.1 evaluation image is printed under conditions of not irradiating except electric light at once after printing test.
With reference to Fig. 6, the designed image of evaluation image is illustrated.Fig. 6 is the designed image 70 of evaluation image.If
Count 70 inclusion region 72 of image and region 74.Region 72 is comparable to the region as 1 circle of supporting body (photoreceptor).Region 72 includes
Image 76.Image 76 is made of the solid image (image color 100%) of square.Region 74 is comparable to enclose as supporting body 1
Region.Region 74 includes image 78.Image 78 is made of whole face half tone image (image color 40%).Image 76 is suitable
In the image enclosed as supporting body 1, image 78 is comparable to the image of lower 1 circle on the basis of the circle for forming image 76.
Printed evaluation image is observed by estimating, and confirms the image portion whether generated in region 74 with region 72
Corresponding image is bad (afterimage of image).Based on following benchmark, evaluate whether to generate afterimage of image.Obtained result (evaluation
1) as shown in table 3 and table 4.
(evaluation criteria of evaluation 1)
Evaluate A:Afterimage of image is not observed.
Evaluate B:Only observe a little afterimage of image.
Evaluate C:Although observing afterimage of image, the level of practical application is not influenced.
Evaluate D:It clearly observes afterimage of image, is the level for influencing practical application.
[Evaluate 2 (the evaluation) ] about reactance voltage;
For evaluation 2, photoreceptor (A-1)~(A-13) and (B-1)~(B-9) is evaluated respectively with image forming apparatus
Image caused by electric leakage is bad.Image forming apparatus, developer and recording medium used is identical as in evaluation 1.
First, each photoreceptor is installed to image forming apparatus, adjusts the electrified voltage of electro-mechanical part, when will be non-exposed with
The electric potential of the corresponding photoreceptor in development section position is set as+570V ± 10V.Then, in 30 DEG C of temperature and humidity 80%RH
In the environment of, apply the DC voltage of 2.0kV to electro-mechanical part on one side, is printed on one side with 15 seconds be spaced in 100 recording mediums
White paper image.The quantity of stain in printed recording medium is counted, the number of the stain of 1 recording medium is calculated
The average value of amount is evaluated based on following benchmark.Obtained result (evaluation 2) is as shown in table 3.Also, stain is photosensitive
It is generated when generating electric leakage in layer.
(evaluation criteria of evaluation 2)
Evaluate A:The quantity of the stain of average 1 recording medium is 0.
Evaluate B:The quantity of the stain of average 1 recording medium is more than 0 and is less than 5.
Evaluate C:The quantity of the stain of average 1 recording medium is 5 less than 10.
Evaluate D:The quantity of the stain of average 1 recording medium is 10 or more.
[Evaluate 3 (the evaluation) ] about filming resistance;
For evaluation 3, photoreceptor (A-1)~(A-13) and (B-1)~(B-9) is evaluated respectively with image forming apparatus
Image caused by membranaceous attachment is bad.Image forming apparatus, developer and recording medium used and the phase used in evaluation 1
Together.
First, each photoreceptor is installed to image forming apparatus, adjusts the electrified voltage of electro-mechanical part, when will be non-exposed with
The electric potential of the corresponding photoreceptor in development section position is set as+570V ± 10V.Then, in 30 DEG C of temperature and humidity 80%RH
In the environment of, printing test is carried out, pattern printing (image color was carried out with 15 seconds be spaced in 5,000 recording medium
1%).Printing test terminated after 1 hour, printed 1 half tone image (image color 25%), and use as evaluation
Image.The evaluation image is observed by estimating, confirms that whether there is or not the image caused by membranaceous attachment bad (striped and hyphens
Line).It is lines that striped, which is parallel with print direction,.Strigula refers to the point or short-term arranged in parallel with print direction.It is based on down
State benchmark evaluation image it is undesirable whether there is or not.Obtained result (evaluation 3) is as shown in table 3 and table 4.
(evaluation criteria of evaluation 3)
Evaluate A:Striped and strigula is not observed.
Evaluate B:Only observe a little striped and strigula.
Evaluate C:It observes part striped and strigula, but does not influence the degree of practical application.
Evaluate D:Striped and strigula are clearly observed on the whole, are the degree for influencing practical application.
[Zong Hepingjia ]
Based on following benchmark, the overall merit of photoreceptor is carried out according to the result of evaluation 1, evaluation 2 and evaluation 3.Synthesis is commented
Valence is that the photoreceptor of A, B or C are evaluated as well.In addition, overall merit be D photoreceptor be evaluated as it is bad.
(evaluation criteria of overall merit)
Evaluate A:Evaluation 1~3 is evaluation A or B, and it is evaluation A to evaluate at least one in 1~3.
Evaluate B:Evaluation 1~3 is all evaluation B.
Evaluate C:Evaluation 1~3 is evaluation A, B or C, and it is evaluation C to evaluate at least one in 1~3.
Evaluate D:At least one in evaluation 1~3 is evaluation D.
As shown in table 2, in photoreceptor (A-1)~(A-13), photosensitive layer contains the charge producing agent of Y-shaped oxygen titanium phthalocyanines
(CG1).In photoreceptor (A-1)~(A-13), photosensitive layer contains one of filler particles (F7)~(F12) of fluorinated resin particle.
In addition, as shown in table 3, in photoreceptor (A-1)~(A-13), the value of the A/ (TW) of formula (1) is 0.020 or more 0.060 or less.
As shown in table 3, in photoreceptor (A-1)~(A-13), Exposure memory, reactance voltage and filming resistance overall merit
As a result it is one in A (good) and C (good).
As shown in table 2, in photoreceptor (B-1)~(B-8), photosensitive layer contains the filler particles different from fluorinated resin particle
(F1) one in~(F6), (F13) and (F14).In photoreceptor (B-9), photosensitive layer is free of filler particles.In addition, such as 4 institute of table
Show, in photoreceptor (B-1) and (B-2), the value of the A/ (TW) of formula (1) is more than 0.061.In photoreceptor (B-3)~(B-8), formula
(1) value of A/ (TW) is less than 0.018.
As shown in table 4, in photoreceptor (B-1)~(B-9), Exposure memory, reactance voltage and filming resistance overall merit
As a result all D (bad).
From the above it is known that photoreceptor (A-1)~(A-13) not only presses down compared with photoreceptor (B-1)~(B-9)
The generation of Exposure memory is made, and reactance voltage and filming resistance are excellent.
Claims (10)
1. a kind of Electrophtography photosensor has conductive base and photosensitive layer, which is characterized in that
The photosensitive layer is single layer, and contains charge producing agent, cavity conveying agent, electron transporting agent, binding resin and fluorine tree
Fat particle,
The charge producing agent contains titanyl phthalocyanine, Bragg angle of the titanyl phthalocyanine in CuK α characteristic X-ray difraction spectrums
27.2 ° of (2 θ ± 0.2 °) has main peak,
If the photosensitive layer is A to the absorbance of the light of wavelength 780nm, the thickness of the photosensitive layer is T (μm), the oxygen titanium phthalein
Cyanines meet following formula (1) in a concentration of W (the quality %) of the photosensitive layer,
0.018≤A/(T·W)≤0.061 (1)。
2. Electrophtography photosensor according to claim 1, which is characterized in that
Relative to 100.0 mass parts of the binding resin, the content of the fluorinated resin particle is 0.5 mass parts or more, 30.0 mass
Part or less.
3. Electrophtography photosensor according to claim 1 or 2, which is characterized in that
The photosensitive layer is 1.20 or more 2.70 or less to the absorbance of the light of wavelength 780nm.
4. Electrophtography photosensor according to claim 1 or 2, which is characterized in that
The thickness of the photosensitive layer is 10.0 μm or more 50.0 μm or less.
5. Electrophtography photosensor according to claim 1 or 2, which is characterized in that
A concentration of 0.50 mass % or more, the 4.00 mass % or less of titanyl phthalocyanine described in the photosensitive layer.
6. Electrophtography photosensor according to claim 1 or 2, which is characterized in that
The average primary particle diameter of the fluorinated resin particle is 0.1 μm or more 10.0 μm or less.
7. a kind of image forming apparatus, has,
As supporting body;
Electro-mechanical part makes the surface as supporting body charge;
Exposure portion makes the surface as supporting body charged be exposed, on the surface as supporting body
Form electrostatic latent image;
The latent electrostatic image developing is toner image with developer by development section;And
Transfer section, by the toner image from described as supporting body is transferred to transfer printing body,
Described image forming apparatus is characterized in that,
It is described as supporting body is Electrophtography photosensor as claimed in claim 1 or 2,
The electrification polarity of the electro-mechanical part is positive polarity.
8. image forming apparatus according to claim 7, which is characterized in that
The transfer printing body is recording medium,
The transfer section is while so that the surface as supporting body is contacted with the recording medium, by the toner
As being transferred to the recording medium.
9. image forming apparatus according to claim 7, which is characterized in that
The electro-mechanical part makes the surface band as supporting body while being contacted with the surface as supporting body
Electricity.
10. a kind of handle box,
Has Electrophtography photosensor as claimed in claim 1 or 2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-075928 | 2017-04-06 | ||
| JP2017075928A JP6680257B2 (en) | 2017-04-06 | 2017-04-06 | Electrophotographic photoreceptor, image forming apparatus and process cartridge |
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| CN108693720A true CN108693720A (en) | 2018-10-23 |
| CN108693720B CN108693720B (en) | 2022-04-12 |
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| JP7330836B2 (en) | 2019-09-26 | 2023-08-22 | キヤノン株式会社 | Electrophotographic photoreceptor, process cartridge and electrophotographic apparatus |
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| CN1495543A (en) * | 2002-09-24 | 2004-05-12 | 京瓷美达株式会社 | Electronic photographic photoreceptor |
| CN102778823A (en) * | 2011-05-10 | 2012-11-14 | 柯尼卡美能达商用科技株式会社 | Electrophotographic photoconductor, process cartridge including the same, and image forming apparatus |
| WO2014021341A1 (en) * | 2012-07-31 | 2014-02-06 | 三菱化学株式会社 | Electrophotographic photo-receptor, electrophotographic photo-receptor cartridge, image-forming device, and triarylamine compound |
| CN103913962A (en) * | 2012-12-28 | 2014-07-09 | 京瓷办公信息系统株式会社 | Positively Charged Single Layer-type Electrophotographic Photoreceptor And Image Forming Device |
| JP2014189500A (en) * | 2013-03-26 | 2014-10-06 | Fuji Xerox Co Ltd | Charge-transport compound, electrophotographic photoreceptor, process cartridge, image-forming device and image-forming method |
| JP2016148766A (en) * | 2015-02-12 | 2016-08-18 | シャープ株式会社 | Electrophotographic photoreceptor, inspection method of the same, and image forming apparatus including electrophotographic photoreceptor |
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| JP2008286909A (en) * | 2007-05-16 | 2008-11-27 | Kyocera Mita Corp | Single layer type electrophotographic photoreceptor and image forming apparatus |
| JP5157438B2 (en) * | 2007-12-28 | 2013-03-06 | 三菱化学株式会社 | Electrophotographic photosensitive member, electrophotographic cartridge, and image forming apparatus |
| JP6528596B2 (en) * | 2015-08-19 | 2019-06-12 | 富士ゼロックス株式会社 | Electrophotographic photosensitive member, process cartridge, image forming apparatus |
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- 2017-04-06 JP JP2017075928A patent/JP6680257B2/en not_active Expired - Fee Related
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| CN1495543A (en) * | 2002-09-24 | 2004-05-12 | 京瓷美达株式会社 | Electronic photographic photoreceptor |
| CN102778823A (en) * | 2011-05-10 | 2012-11-14 | 柯尼卡美能达商用科技株式会社 | Electrophotographic photoconductor, process cartridge including the same, and image forming apparatus |
| WO2014021341A1 (en) * | 2012-07-31 | 2014-02-06 | 三菱化学株式会社 | Electrophotographic photo-receptor, electrophotographic photo-receptor cartridge, image-forming device, and triarylamine compound |
| CN103913962A (en) * | 2012-12-28 | 2014-07-09 | 京瓷办公信息系统株式会社 | Positively Charged Single Layer-type Electrophotographic Photoreceptor And Image Forming Device |
| JP2014189500A (en) * | 2013-03-26 | 2014-10-06 | Fuji Xerox Co Ltd | Charge-transport compound, electrophotographic photoreceptor, process cartridge, image-forming device and image-forming method |
| JP2016148766A (en) * | 2015-02-12 | 2016-08-18 | シャープ株式会社 | Electrophotographic photoreceptor, inspection method of the same, and image forming apparatus including electrophotographic photoreceptor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108693720B (en) | 2022-04-12 |
| JP6680257B2 (en) | 2020-04-15 |
| JP2018180108A (en) | 2018-11-15 |
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