CN103913962B - Positively charged mono-layer electronic photographic photoreceptor and image processing system - Google Patents
Positively charged mono-layer electronic photographic photoreceptor and image processing system Download PDFInfo
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- CN103913962B CN103913962B CN201310652315.XA CN201310652315A CN103913962B CN 103913962 B CN103913962 B CN 103913962B CN 201310652315 A CN201310652315 A CN 201310652315A CN 103913962 B CN103913962 B CN 103913962B
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Abstract
The present invention provides a kind of positively charged mono-layer electronic photographic photoreceptor and image processing system.Positively charged mono-layer electronic photographic photoreceptor has the photosensitive layer of the single layer structure comprising charge generating material, charge transport material, filler and binding resin on conductive base.Positively charged mono-layer electronic photographic photoreceptor is used in the image processing system for possessing the electro-mechanical part of contact band electrically as image carrier.In positively charged mono-layer electronic photographic photoreceptor, filler is contained in photosensitive layer.Within the limits prescribed, filler includes more than one the particulate selected from the group formed by silicon dioxide microparticle and resin particle to the volume average particle size of filler.
Description
Technical field
The present invention relates to positively charged mono-layer electronic photographic photoreceptor and possess positively charged mono-layer electronic photographic photoreceptor
Image processing system.
Background technology
The image processing system of existing electrofax mode possesses Electrophtography photosensor.Electrophtography photosensor whether there is
Machine photoreceptor and Organophotoreceptor.Inorganic photoreceptor possesses the photosensitive layer being made up of inorganic material such as selenium, non-crystalline silicons.Organic photo
Body possesses the main photosensitive layer being made up of organic materials such as binding resin, charge generating material, charge transport materials.With inorganic sense
Body of light is compared, Organophotoreceptor easy to manufacture.In addition, Organophotoreceptor from the material of relative broad range due to that can select photosensitive
The material of layer, the free degree of design is high.Therefore, Organophotoreceptor is used widely.
As such Organophotoreceptor, single-layer type Organophotoreceptor and cascade type Organophotoreceptor can be enumerated.Individual layer
Type Organophotoreceptor, possesses in photosensitive layer of the same layer comprising charge generating material and charge transport material.The organic sense of cascade type
Body of light, with the structure that charge generation layer and charge transport layer are laminated with conductive base, wherein, charge generation layer contains
Charge generating material, charge transport layer contains charge transport material.Single-layer type Organophotoreceptor and cascade type organic photo body phase
Compare, because being single layer structure easy to manufacture.It is also well known that be：Because single-layer type photoreceptor is positively charged, so
The oxidizing gas of ozone etc is seldom produced when powered, and the generation of holiday can be suppressed.
On the other hand, the band of Electrophtography photosensor electrically have contact band electrically with noncontact band electrically.Contact
Band electrically in, using charged roller etc. electro-mechanical part and photosensitive layer contact in the state of make photosensitive surface powered.Noncontact band
In electrically, make photosensitive surface powered in the state of electro-mechanical part and photosensitive layer separation using grid-control formula corona etc..Due to connecing
Tactile band is electrically nearly free from the oxidizing gases such as ozone, so comparatively more preferable.
Therefore, in order that service life when the surface of Electrophtography photosensor is powered not to Electrophtography photosensor or doing
Public environment produces harmful effect, preferred compositions using contact band electrically with positively charged mono-layer electronic photographic photoreceptor.
For photoreceptor, it is desirable to be ISO and the few image of flaw can be formed.In order to meet such requirement, carry
The positively charged single-layer type Organophotoreceptor of the single-layer type photosensitive layer containing metal oxide microparticle is gone out to possess.The metal oxide
Using titanium oxide or tin oxide as main component, average primary particle diameter is below 50nm.
The content of the invention
However, using existing positively charged single-layer type in the image processing system for possessing the electro-mechanical part of contact band electrically
In the case of Organophotoreceptor, due to the friction of electro-mechanical part and photosensitive surface, photosensitive layer is easier abrasion.Further, since should
Reason, existing positively charged mono-layer electronic photographic photoreceptor is difficult to make photosensitive surface be charged to desired current potential.
The present invention makes in view of the above problems, and its object is to there is provided the excellent band of wear resistance and electrical characteristics
Positive electricity mono-layer electronic photographic photoreceptor and possesses the positively charged mono-layer electronic photographic photoreceptor as image carrier
Image processing system.
Specifically, the present invention provides following technical scheme.
The first scheme of the present invention is related to a kind of positive electricity mono-layer electronic photographic photoreceptor, and it is possessing contact band electrically
Electro-mechanical part image processing system in used as image carrier.
The positively charged mono-layer electronic photographic photoreceptor has on conductive base includes charge generating material, electric charge
Convey the photosensitive layer of the single layer structure of material, filler and binding resin.
The filler includes more than one the particulate selected from the group formed by silicon dioxide microparticle and resin particle.Institute
The volume average particle size for stating filler is less than more than 5nm and 5 μm.
The alternative plan of the present invention is related to image processing system.
Described image forming apparatus possesses：Image carrier, make the powered contact in the surface of described image supporting body powered
The electro-mechanical part of mode, the surface to powered described image supporting body are exposed so as in the surface shape of described image supporting body
Exposure portion into electrostatic latent image, by the latent electrostatic image developing for the development section of toner image and by the toner image
The transfer section of transfer printing body is transferred to from described image supporting body.Described image supporting body is the positively charged involved by first scheme
Mono-layer electronic photographic photoreceptor.
In accordance with the invention it is possible to provide wear resistance and the excellent positively charged mono-layer electronic photographic photoreceptor of electrical characteristics.
It can also enough provide possesses image processing system of the positively charged mono-layer electronic photographic photoreceptor as image carrier.
Brief description of the drawings
Fig. 1 is the section for the structure for representing the positively charged mono-layer electronic photographic photoreceptor involved by embodiment of the present invention
Schematic diagram.
Fig. 2 is the image shape for representing to possess the positively charged mono-layer electronic photographic photoreceptor involved by embodiment of the present invention
Into the schematic diagram of the structure of device.
Embodiment
Embodiments of the present invention are specifically described below, but the present invention is not limited by following embodiment
It is fixed, appropriate change can be carried out in the range of the object of the invention to implement.In addition, repeating part for explanation, it is appropriate to exist
Situation about omitting the description, but therefore do not limit invention.
[first embodiment]
First embodiment be related to positively charged mono-layer electronic photographic photoreceptor (hereinafter also referred to as single-layer type photoreceptor or
Photoreceptor).Positively charged mono-layer electronic photographic photoreceptor has on conductive base to be conveyed comprising charge generating material, electric charge
The photosensitive layer of the single layer structure of material, filler and binding resin.Positively charged mono-layer electronic photographic photoreceptor, is possessing contact
In the image processing system of the electro-mechanical part of band electrically, used as image carrier.Filler, which is included, to be selected from by silica
More than one the particulate of the group of particulate and resin particle formation.The volume average particle size of filler be more than 5nm and 5 μm with
Under.
Positively charged mono-layer electronic photographic photoreceptor 10 involved by first embodiment, as shown in figure 1, possessing electric conductivity
The photosensitive layer 14 of matrix 12 and individual layer.Photosensitive layer 14 is formed on conductive base 12, contains charge generating material, cavity conveying
Material, electron transport materials and binding resin.Further, as long as positively charged mono-layer electronic photographic photoreceptor 10 possesses electric conductivity base
Body 12 and photosensitive layer 14, are not particularly limited.Specifically, positively charged mono-layer electronic photographic photoreceptor 10 can also be as
Photosensitive layer 14 is directly provided with conductive base 12 shown in Fig. 1 (a).Positively charged single layer type electrophotograph as shown in Fig. 1 (b)
Photoreceptor 10, can also possess intermediate layer 16 between conductive base 12 and photosensitive layer 14.In addition, such as Fig. 1 (a) or Fig. 1 (b)
Shown, photosensitive layer 14 can also be exposed as outermost layer.As shown in Fig. 1 (c), can also possess protection on photosensitive layer 14
Layer 18.
Hereinafter, conductive base and photosensitive layer are illustrated successively.
(conductive base)
Conductive base, as long as can act as the conductive base of positively charged mono-layer electronic photographic photoreceptor, no
It is particularly limited to.Specifically, the conductive base that surface element is at least constituted with conductive material can be enumerated.Example
Such as, it can be formed by conductive material conductive base.Conductive base can also be by conductive
The surface of material plastic covering material etc. is formed.In addition, as conductive material, for example,：Aluminium, iron, copper,
Tin, platinum, silver, vanadium, molybdenum, chromium, cadmium, titanium, nickel, palladium, indium, stainless steel or brass., can be with addition, as conductive material
A kind of conductive material is used alone, two or more conductive materials can also be combined to use, for example
Use alloy.In addition, being used as conductive base, in above-mentioned material, the conductive base preferably formed by aluminum or aluminum alloy.
By using the conductive base formed by aluminum or aluminum alloy, using the teaching of the invention it is possible to provide the positively charged single-layer type electricity of better image can be formed
Sub- electrophotographic photoconductor.Since it takes into account that migration of the electric charge from photosensitive layer to conductive base is good.
The shape of conductive base can coordinate the structure of used image processing system suitably to select.It is used as conduction
Property matrix, can preferably use the matrix of the shape such as with sheet or drum type.In addition, the thickness of conductive base can root
Suitably selected according to above-mentioned shape.
(photosensitive layer)
Possess the photosensitive layer of positively charged mono-layer electronic photographic photoreceptor, conveyed with charge generating material, electric charge is included
The single layer structure of material, filler and binding resin, as long as filler is comprising selected from by silicon dioxide microparticle and resin particle shape
Into group more than one particulate, be not particularly limited.Hereinafter, to constitute photosensitive layer composition (charge generating material,
Charge transport material, filler, binding resin and additive) and the manufacture method of positively charged mono-layer electronic photographic photoreceptor enter
Row explanation.
(charge generating material)
As charge generating material, as long as material can be produced as the electric charge of positively charged mono-layer electronic photographic photoreceptor
Expect the material used, be not particularly limited.As charge generating material, for example, it can enumerate：Phthalocyanine pigment, dinaphthyl are embedding
Benzene pigment, disazo pigment, dithione pyrrolopyrrole (dithioketo pyrrolo pyrrole) pigment, without metal naphthalene phthalein
Cyanine pigment, metal naphthalene phthalocyanine pigment, square acid color, trisazo pigment, indigo pigments, azulene pigment (azulenium
Pigment), phthalocyanine pigments；The powder of the inorganic light conductive material of selenium, selen-tellurjum, selenium arsenic, cadmium sulfide or non-crystalline silicon etc；Pyrans
Salt, fear and embedding fear quinones pigment, triphenylmethane pigment, intellectual circle's class pigment, toluene amines pigment, pyrazolines pigment or quinacridine
Ketone pigment.
In addition, in order to have absorbing wavelength in desired region, charge generating material both can be used alone, also might be used
To combine two or more use.Further, in each charge generating material, the figure particularly in digit optical system
As in forming apparatus, being preferably used in more than 700nm wavelength region has the positively charged single layer type electrophotograph sense of sensitivity
Body of light.As the image processing system of digit optical system, the laser beam using semiconductor laser etc light source can be enumerated
Printer or facsimile machine.Also, as charge generating material, preferably use the phthalocyanine of such as metal-free phthalocyanine or phthalocyanine titanium etc
Class pigment.In addition, being not specially limited to the crystal formation of above-mentioned phthalocyanine pigment, the phthalocyanine pigment of various crystal formations can be used.
In addition, for the image processing system of the simulated optical system using the electrostatic duplicators of white light source such as halide lamp etc,
Being preferably used in visible region has the positively charged mono-layer electronic photographic photoreceptor of sensitivity.It is therefore preferable that using for example
Perylene pigment or disazo pigment.
As the specific example of phthalocyanine pigment, it can enumerate：X-type metal-free phthalocyanine (the x- that following logical formula (I)s are represented
H2Pc) or the α types that represent of following logical formula (II)s or Y types etc phthalocyanine titanium.
【Chemical formula 1】
【Chemical formula 2】
In order to improve sensitivity, preferably following phthalocyanine titanium is used as charge generating material.
Meet feature (A) and the phthalocyanine titanium of (B), wherein, (A)：In CuK α characteristic X-ray difraction spectrums, Bragg angle
There is peak signal peak at 2 θ ± 0.2 °=27.2 °；(B)：In Differential Scanning Calorimeter analysis, except the gasification institute by adsorbing water
Outside the signal peak of generation, there is a signal peak more than 50 DEG C and in less than 270 DEG C of scope.
In addition to the feature of (A), the phthalocyanine titanium of feature (C) also is compliant with, wherein, (C)：In Differential Scanning Calorimeter analysis,
In addition to the signal peak produced by the gasification due to adsorbing water, there is no signal more than 50 DEG C and in less than 400 DEG C of scope
Peak.
In addition to the feature of (A), the phthalocyanine titanium of feature (D) also is compliant with, wherein, (D)：In Differential Scanning Calorimeter analysis,
In addition to the signal peak produced by the gasification due to adsorbing water, there is no signal more than 50 DEG C and in less than 270 DEG C of scope
, there is a signal peak at peak more than 270 DEG C and in less than 400 DEG C of scope.
(charge transport material)
As charge transport material used in the present invention, comprising selected from hole transporting material (HTM) and electron transport material
Expect more than one the material of (ETM).Hereinafter, hole transporting material and electron transport materials are illustrated successively.
Hole transporting material
As hole transporting material (HTM), as long as the photosensitive of positively charged mono-layer electronic photographic photoreceptor can be used as
The material that the hole transporting material that layer is included is used, is not particularly limited.As the specific example of charge generating material,
It can enumerate：Benzidine derivative, 2, the furodiazole compound of 5 two (4 methylamino phenyl) 1,3,4 oxadiazoles etc, 9 (4
Lignocaine styryl) styrene compound, the carbazole compound of PVK etc, the You Jiju that fear etc
The pyrazoline compounds of silane compound, 1- phenyl 3 (to dimethylaminophenyl) pyrazoline etc, hydrazone compounds, three
Amino benzenes compounds, Benzazole compounds, evil azole compounds, isoxazole class compound, thiazole compound, triazole type chemical combination
The nitrogenous ring type compound or condensation polycyclic compound of thing etc.In hole transporting material, preferably there is one in the molecule
Or the triphenylamine compound of multiple triphenylamine skeletons.These hole transporting materials, can be used alone, and can also combine two kinds
Use above.
Electron transport materials
As electron transport materials (ETM), as long as the photosensitive of positively charged mono-layer electronic photographic photoreceptor can be used as
The material that the electron transport materials that layer is included are used, is not particularly limited.Specifically, it can enumerate：Naphthoquinones derives
Thing, diphenoquinone, fear quinone derivative, azo quinone derivative (Azo QuinOne), nitro and fear quinone derivative, dinitro and fear
The quinone derivative of quinone derivative etc；Malononitrile derivative；Thiapyran derivative；Trinitro- thioxanthone derivates；3,4,5,7 four nitre
The fluorenone derivatives of base 9；Dinitro fears derivative；Dinitro acridine derivatives；Tetracyanoethylene；2,4,8 trinitro- thioxanthones；Dinitro
Base benzene；Dinitro is feared；Dinitro acridine；Succinic anhydride, maleic anhydride or dibromomaleic acid acid anhydride.These electron transport materials, can
To be used alone, two or more use can also be combined.
(filler)
Positively charged mono-layer electronic photographic photoreceptor involved by the first embodiment of the present invention possesses photosensitive layer.It is photosensitive
Layer includes the filler as neccessary composition.Filler includes one selected from the group formed by silicon dioxide microparticle and resin particle
Plant the particulate of the above.The volume average particle size of filler is less than more than 5nm and 5 μm.More than being included in photosensitive layer
Filler, can obtain the positively charged mono-layer electronic photographic photoreceptor of excellent in wear resistance.
The material of resin particle, is not particularly limited in the range of without prejudice to the object of the invention.It is used as appropriate resin
The example of the material of particulate, can be enumerated：The silicone resin of silicon rubber, organopolysiloxane etc；Polyphenylene sulfide is poly-
The fluorine resin of TFE etc.It is used as silicones, preferably polysilsesquioxane, more preferably poly- methyl sesquialter silicon
Oxygen alkane.
As long as silicon dioxide microparticle without prejudice to the object of the invention, can suitably it be selected from well-known silicon dioxide microparticle
Select.Silicon dioxide microparticle can also be handled with the surface conditioning agent of silane coupler or silicone oil etc.
The volume average particle size of filler be less than more than 5nm and 5 μm, preferably less than more than 5nm and 1 μm, more preferably
For less than more than 5nm and 0.1 μm.It is photosensitive due to being often difficult to make in the case where the volume average particle size of filler is more than 5 μm
The surface of body is powered well, so being difficult to obtain the excellent positively charged mono-layer electronic photographic photoreceptor of electrical characteristics.
Filler can also contain beyond silicon dioxide microparticle and resin particle in the range of without prejudice to the object of the invention
Other species particulate.The particulate of other species beyond silicon dioxide microparticle and resin particle, such as from metal oxide
In the particulate of particulate, inorganic metal salt particulate and organic metal salt particulate etc, it is considered to which obtained positively charged single-layer type electronics shines
The performance of phase photoreceptor and selected.Contain the micro- of other species beyond silicon dioxide microparticle and resin particle in filler
In the case of grain, total quality relative to filler of silicon dioxide microparticle content and resin particle content in filler,
Preferably more than 80 mass %, more preferably more than 90 mass %, particularly preferably more than 95 mass %.
(binding resin)
As binding resin, as long as can be included as the photosensitive layer of positively charged mono-layer electronic photographic photoreceptor
The material that binding resin is used, is not particularly limited.As the concrete example of preferred binding resin, it can enumerate：Poly- carbon
Acid esters resin, styrene resin, styrene-butadiene-copolymer, styrene acrylonitrile copolymer, styrene maleic acid copolymerization
Thing, styrene acrylic copolymer, acrylic copolymer, polyvinyl resin, ethylene vinyl acetate copolymer, haloflex
Resin, Corvic, acrylic resin, ionomer, vinyl chloride-vinyl acetate copolymer, alkyd resin, polyamide resin
Fat, polyurethane resin, polyarylate resin, polysulfone resin, diallyl phthalate ester resin, ketone resin, polyvinyl alcohol contracting
The thermoplastic resin of butyral resin, polyether resin or polyester resin etc；Silicone resin, epoxy resin, phenolic resin, urea tree
The thermosetting resin of fat, melmac or other bridging property thermosetting resins etc；Epocryl or amino
The light-cured resin of urethane acrylates copolymer resin etc.These binding resins, can be used alone, can also group
Close two or more use.
In order to the photosensitive layer for the excellent combination property for obtaining processability, mechanical property, optical characteristics and wear resistance,
Binding resin is preferably used：Bisphenol Z type polycarbonate resin, bisphenol Z c-type polycarbonate resin, bisphenol-c type polycarbonate resin
Or the polycarbonate resin of bisphenol A polycarbonate resin etc.
(additive)
The photosensitive layer of positively charged mono-layer electronic photographic photoreceptor, will not bring dysgenic to electrofax characteristic
In the range of, various additives (charge generating material, hole transporting material, electron transport materials and binding resin can also be included
Material in addition).As the additive of photosensitive layer can be mixed into, for example, it can enumerate：Antioxidant, radical scavenger,
The anti-deterioration agents such as singlet quencher (singlet quencher), ultra-violet absorber；Softening agent, plasticizer, surface modifier,
Extender, thickener, dispersion stabilizer, wax, acceptor, donor, surfactant or levelling agent.
(manufacture method of positively charged mono-layer electronic photographic photoreceptor)
The manufacture method of positively charged mono-layer electronic photographic photoreceptor, spy is not made in the range of without prejudice to the object of the invention
Do not limit.As the preferred example of the manufacture method of positively charged mono-layer electronic photographic photoreceptor, it can enumerate：By photosensitive layer
The method that coating solution forms photosensitive layer on conductive base.Specifically, by coating solution in electric conductivity
On matrix, wherein, the coating fluid be make charge generating material, hole transporting material, electron transport materials, binding resin and according to
Need the dissolving such as various additives of addition or scattered coating fluid in a solvent.Then, it can manufacture photosensitive by drying
Layer.As coating method, it is not specially limited, for example, applied using spin coater, deposited machine, flush coater, the scraper smeared
The method of cloth machine, dip coaterd or scraper., can be with addition, as the drying means for forming film on conductive base
Enumerate for example more than 80 DEG C and carry out heated-air drying under conditions of less than 150 DEG C and more than 15 minutes and less than 120 minutes
Method.
In positively charged mono-layer electronic photographic photoreceptor, charge generating material, hole transporting material, electron transport materials and
Each content of binding resin is suitably selected, and is not particularly limited.Specifically, the content of charge generating material is relative to viscous
The mass parts of resin 100 are tied, more than preferably 0.1 mass parts and below 50 mass parts, more than more preferably 0.5 mass parts and 30 matter
Measure below part.The content of electron transport materials is relative to the mass parts of binding resin 100, more than preferably 5 mass parts and 100 mass
Below part, more than more preferably 10 mass parts and below 80 mass parts.The content of hole transporting material is relative to binding resin 100
More than mass parts, preferably 5 mass parts and below 500 mass parts, more than more preferably 25 mass parts and below 200 mass parts.
In addition, the content of the total amount of hole transporting material and electron transport materials, i.e. charge transport material, relative to binding resin 100
More than mass parts, preferably 20 mass parts and below 500 mass parts, more than more preferably 30 mass parts and below 200 mass parts.
For the thickness of the photosensitive layer of positively charged mono-layer electronic photographic photoreceptor, as long as photosensitive layer can be played sufficiently
Effect, is not particularly limited.Specifically, the thickness of photosensitive layer, preferably more than 5 μm and less than 100 μm, more preferably
More than 10 μm and less than 50 μm.
As the solvent contained by the coating fluid of photosensitive layer, if can make composition photosensitive layer each composition dissolve or
It is scattered, it is not particularly limited.Specifically, it can enumerate：The alcohols of methanol, ethanol, isopropanol or butanol etc；Just oneself
The aliphatic hydrocarbon of alkane, octane or hexamethylene etc；The aromatic hydrocarbon of benzene, toluene or dimethylbenzene etc；Dichloromethane, two chloroethenes
The halogenated hydrocarbon of alkane, carbon tetrachloride or chlorobenzene etc；Dimethyl ether, diethyl ether, tetrahydrofuran, glycol dimethyl ether or diethylene glycol dimethyl
The ethers of ether etc；The ketone of acetone, methyl ethyl ketone, methyl iso-butyl ketone (MIBK) or cyclohexanone etc；Ethyl acetate or acetic acid first
The esters of ester etc；The aprotic polar organic solvent of dimethylformaldehyde, dimethylformamide or dimethyl sulfoxide (DMSO) etc.This
A little solvents, may be used singly or in combination of two or more to use.
The image that positively charged mono-layer electronic photographic photoreceptor is used as possessing the electro-mechanical part of following contact bands electrically is formed
The image carrier of device.In general, in the image processing system for possessing the electro-mechanical part of contact band electrically, easily occur
The abrasion of photosensitive layer.But, even if the positively charged mono-layer electronic photographic photoreceptor of first embodiment, which is used in, possesses contact band
In the image processing system of electro-mechanical part electrically, it is not easy to wear and tear.Moreover, the positively charged single-layer type of first embodiment
Electrophtography photosensor has excellent electrical characteristics.Therefore, in the image processing system for possessing the electro-mechanical part of contact band electrically
In, using the positively charged mono-layer electronic photographic photoreceptor of first embodiment as image carrier in the case of, being capable of shape
Into high-quality image.
[second embodiment]
Second embodiment is related to image processing system.Image processing system, which possesses image carrier, application voltage, makes figure
Be exposed as the powered contact band in the surface of supporting body electro-mechanical part electrically, to the surface of powered image carrier so as to
The exposure portion that forms electrostatic latent image on the surface of image carrier, the development section that electrostatic latent image develops as toner image,
And toner image is transferred to the transfer section of transfer printing body from image carrier.In the image formation dress of second embodiment
In putting, as image carrier, the positively charged mono-layer electronic photographic photoreceptor being related to using first embodiment.
In addition, the image processing system of second embodiment, can be applicable monochrome image forming apparatus and following such
Use any one in the color image forming device of the series system of multiple color toner.Here, to series system
Color image forming device is illustrated.
In addition, the color image forming device for the series system that second embodiment is related to possess multiple images supporting body and
Multiple development sections.Multiple images supporting body in order to form the toner formed respectively by the toner of different colours on each face
Image, is arranged side by side in the prescribed direction.Multiple development sections possess developer roll.Developer roll, is oppositely disposed with each image carrier,
Carry in its surface and carry toner, the toner of carrying is supplied respectively to each image carrier surface.Implement second
In mode, as each image carrier, the positively charged mono-layer electronic photographic photoreceptor being related to respectively using first embodiment.
Fig. 2 is the schematic diagram for the structure for representing the image processing system that second embodiment is related to.Here, with colour print
Exemplified by machine 1, image processing system is illustrated.Color printer 1 possesses positively charged mono-layer electronic photographic photoreceptor.
As shown in Fig. 2 color copy machine 1 has the equipment body 1a of box.Paper supply is provided with equipment body 1a
Portion 2, image forming part 3 and fixing section 4.The supply paper of sheet feed section 2 P.Image forming part 3 carries the paper P supplied by sheet feed section 2
And the toner image based on view data etc. is transferred on paper P.Fixing section 4 carries out fixing processing, will pass through image
Forming portion 3 is transferred to the unfixed toner image on paper P to paper P.In addition, in the upper of equipment body 1a
Surface is provided with paper delivery portion 5.The paper P for being subjected to fixing processing in fixing section 4 is discharged to paper delivery portion 5.
Sheet feed section 2 possesses paper feeding cassette 121, takes paper bowl 122, paper feed roller 123,124 and 125 and alignment rolls 126.Paper supply
Box 121 is arranged to can slave unit main body 1a dismounting, the paper P of storage various sizes.Paper bowl 122 is taken to be arranged on the confession shown in Fig. 2
The upper left side position of carton 121, the paper P being stored in paper feeding cassette 121 is taken out one by one.Paper feed roller 123,124 and 125
Paper transport passage for transporting will be passed out to by the paper P for taking paper bowl 122 to take out.Alignment rolls 126 make by paper feed roller 123,124 and
The 125 paper P for passing out to paper transport passage for transporting are waited for.Afterwards, paper P is supplied to image forming part in defined timing
3。
In addition, sheet feed section 2 is further equipped with manual pallet (not shown) and takes paper bowl 127.Manual pallet, installed in Fig. 2
Shown equipment body 1a left surface.This takes paper bowl 127 to take out the paper P being placed on manual pallet.By taking paper bowl 127 to take
The paper P gone out passes out to paper transport passage for transporting by paper feed roller 123 and 125, is supplied to by alignment rolls 126 in defined timing
Image forming part 3.
Image forming part 3 possesses image formation unit 7, intermediate transfer belt 31 and secondary transfer roller 32.Formed by image
Unit 7, intermediate transfer belt 31 is transferred to by the toner image based on the view data from electric transmissions such as computers
Surface (contact surface with secondary transfer roller 32).Toner image on the intermediate transfer belt 31 is secondarily transferred to from paper supply
On the paper P that box 121 is sent into.
Image formation unit 7 possesses from upstream side (being right side in Fig. 2) the black unit that side is arranged successively downstream towards
7K, yellow unit 7Y, cyan unit 7C and magenta unit 7M.In the respective central position of each unit 7K, 7Y, 7C and 7M
Put, can rotationally be configured with photosensitive as the positively charged single layer type electrophotograph of image carrier along arrow (clockwise) direction
Body 37 (hereinafter referred to as photoreceptor 37).Also, it is each configured with successively from rotation direction upstream side around each photoreceptor 37
Electro-mechanical part 39, exposure portion 38, development section 71, cleaning section (not shown) and de-power unit (not shown) as needed.In addition, conduct
Photoreceptor 37, uses the positively charged mono-layer electronic photographic photoreceptor involved by first embodiment.
Electro-mechanical part 39 makes the side face of the photoreceptor 37 rotated in the direction of the arrow equably powered.It is used as the specific of electro-mechanical part 39
Example, can enumerate the charged roller that possesses the way of contact or the electro-mechanical part with brush.The charged roller of the way of contact exists with brush
Charged roller makes the side face (surface) of photoreceptor 37 powered in the state of being contacted with brush with photoreceptor 37.Wherein, preferably use
Possesses the electro-mechanical part 39 of the charged roller of the way of contact.
The electro-mechanical part 39 for possessing the charged roller of the way of contact makes photoreceptor in the state of charged roller is contacted with photoreceptor 37
37 side face (surface) is powered.As this charged roller, for example, in the state of being contacted with photoreceptor 37, sense is followed
The rotation of body of light 37 and the charged roller rotated.In addition, as charged roller, being made up of for example, at least surface element resin
Roller.Possess the cored bar rotationally supported by axle more specifically, can enumerate, form resin bed on cored bar and right
Cored bar applies the roller of alive voltage application portion.Possess the electro-mechanical part 39 of this charged roller, by voltage application portion to band
Plug applies voltage, and the surface of photoreceptor 37 contacted via resin bed can be made powered.
The voltage for being applied to charged roller by voltage application portion is not specially limited.But, with applying alternating current to charged roller
Pressure or the structure of overlapping voltage (voltage that alternating voltage is overlapped with DC voltage) are compared, and preferred pair charged roller only applies directly
Flow the structure of voltage.Only apply the structure of DC voltage to charged roller, formed because the wear extent of photosensitive layer is easily reduced, therefore easily
Appropriate image.It is applied to the DC voltage of positively charged mono-layer electronic photographic photoreceptor, preferably more than 1000V and 2000V
Hereinafter, more preferably more than 1200V and below 1800V, particularly preferably more than 1400V and below 1600V.
Image processing system possesses for applying voltage and the electro-mechanical part with charged roller and the band as image carrier
In the case of positive electricity mono-layer electronic photographic photoreceptor, transfer residual is easily produced.But, even if in the above circumstances, leading to
Cross and use the positively charged mono-layer electronic photographic photoreceptor involved by first embodiment as image carrier, can also suppress
Transfer residual and the generation for suppressing image deflects.
In addition, the resin of the resin bed of charged roller is constituted, as long as the side face of photoreceptor 37 can be made powered well,
It is not specially limited.As the concrete example of the resin used in resin bed, silicone resin, urethane resin can be enumerated
Or Si modification resin etc..In addition, can also contain inorganic filling material in resin bed.
Exposure portion 38 is so-called laser scan unit.Exposure portion 38 is based on from the personal computer as epigyny device
(PC) view data of input, to all surface irradiation lasers of the photoreceptor 37 of uniform charged by electro-mechanical part 39, thus, in sense
The electrostatic latent image based on view data is formed in body of light 37.The week that development section 71 passes through the photoreceptor 37 to being formed with electrostatic latent image
Face supplies toner, forms the toner image based on view data, then, and the toner image is transferred to middle turn
Print band 31.Cleaning section is after the primary transfer of toner image to intermediate transfer belt 31 terminates, and cleaning remains in photoreceptor 37
The toner of side face.The side face of photoreceptor 37 is de-energized after primary transfer terminates for de-power unit.By cleaning section and de-power unit
Clean the side face of treated photoreceptor 37, in order to carry out new on-line treatment, facing electro-mechanical part 39 carry out it is new powered
Processing.In addition, cleaning section and de-power unit are not shown.
Intermediate transfer belt 31 is the banding rotor of ring-type.Intermediate transfer belt 31 be erected at multiple rollers (driven roller 33, from
Dynamic roller 34, support roller 35 and primary transfer roller 36) on, the surface (contact surface) of intermediate transfer belt 31 and the side face of each photoreceptor 37
Abut.In addition, intermediate transfer belt 31 is forced into photoreceptor 37 by the primary transfer roller 36 being oppositely disposed with each photoreceptor 37.
In intermediate transfer belt 31 in the state of photoreceptor 37 is forced into, with the rotation of multiple rollers, infinite place rotates.Driven roller
33 carry out rotation driving by driving source (for example, stepping motor), rotate the infinite place of intermediate transfer belt 31.Driven voller 34, branch
Support roller 35 and primary transfer roller 36 are configured to rotate freely, with the infinite place of the intermediate transfer belt 31 driven by driven roller 33
Rotate and driven rotation.The active rotation of these rollers 34,35 and 36 response driven roller 33 carries out driven via intermediate transfer belt 31
Rotate, while being supported to intermediate transfer belt 31.
Intermediate transfer belt 31 is (inverse by the drives edge arrow of driven roller 33 between each photoreceptor 37 and primary transfer roller 36
Hour hands) direction rotates.Applied in addition, primary transfer is biased (the powered opposite polarity polarity with toner) by primary transfer roller 36
Intermediate transfer belt 31 is added to, thus, the toner image formed on each photoreceptor 37 transfers (one successively with overlapping coating state
Secondary transfer) on intermediate transfer belt 31.Then, as needed, by by the way that the surface of each photoreceptor 37 is de-energized except electric light
De-power unit (not shown) be de-energized.Then, each photoreceptor 37 is further rotated, and is entered in next processing.
Secondary transfer roller 32 will be applied to paper P with the secondary transfer printing of toner image opposite polarity bias.By will be with
The secondary transfer printing bias of toner image opposite polarity is applied to paper P, is transferred to the toner on intermediate transfer belt 31
Image is transferred to paper P between secondary transfer roller 32 and support roller 35.Thus, colored toner image is transferred to paper
Open P.
4 pairs of transferred images for being transferred to paper P in image forming part 3 of fixing section impose fixing processing.Fixing section 4 possesses logical
The heating roller 41 of heating power body heating is crossed, is oppositely disposed with the heating roller 41 and side face is compacted and abuts to the side face of heating roller 41
Backer roll 42.
Then, paper P transferred image is transferred to by secondary transfer roller 32 in image forming part 3, by paper P by adding
The fixing processing of heating when between hot-rolling 41 and backer roll 42, is fixed to paper P.Then, the paper P of fixing processing has been imposed
It is discharged to paper delivery portion 5.In addition, in the color printer 1 of present embodiment, the appropriate portion between fixing section 4 and paper delivery portion 5
Position is equipped with transport roller 6.
Paper delivery portion 5 is formed by the equipment body 1a of color printer 1 top depression.At the bottom of the recess of the depression
Portion is formed with the paper discharging tray 51 for the paper P for receiving discharge.
Color printer 1 forms image by above-mentioned image forming operation on paper P.The image of above-mentioned series system
Forming apparatus, possesses wear resistance and the positively charged single layer type electrophotograph sense involved by the excellent first embodiment of electrical characteristics
Body of light is used as image carrier.Therefore, such image processing system, even possessing the sense of the electro-mechanical part of contact band electrically
The structure that photosphere easily weares and teares, can also suppress the abrasion of photosensitive layer and form appropriate image.
【Embodiment】
Hereinafter, the present invention is further specifically illustrated by embodiment.In addition, the present invention is not appointed by embodiment
What is limited.
In embodiment and comparative example, using following charge generating material (CGM1~3), hole transporting material (HTM-1~
4), electron transport materials (ETM-1~4), filler (F1~12) and binding resin.
＜ charge generating materials (CGM) ＞
CGM1：x-H2Pc
CGM2：y-TiOPc
In CuK α characteristic X-ray difraction spectrums, there is peak signal peak at θ ± 0.2 °=27.2 ° of Bragg angle 2, and
Phthalocyanine titanium crystallization without signal peak at 26.2 °.CGM3：k-TiOPc
In CuK α characteristic X-ray difraction spectrums, there is peak signal peak at θ ± 0.2 °=27.2 ° of Bragg angle 2, and
No signal peak at 26.2 °, and in Differential Scanning Calorimeter analysis, except the signal peak produced by the gasification due to adsorbing water
Outside, from 270 DEG C to 400 DEG C in have the phthalocyanine titanium crystallization of signal peak.
＜ hole transporting materials (HTM) ＞
HTM1
【Chemical formula 3】
【Chemical formula 4】
【Chemical formula 5】
【Chemical formula 6】
【Chemical formula 7】
【Chemical formula 8】
【Chemical formula 9】
【Chemical formula 10】
＜ fillers ＞
F1：SiO2Particulate (Japanese AEROSIL Co., Ltd. manufacture " RX200 " type, 0.012 μm of volume average particle size)
F2：SiO2Particulate (Japanese AEROSIL Co., Ltd. manufacture " RX300 " type, 0.007 μm of volume average particle size)
F3：Poly methyl silsesquioxane particulate (Nikko Rica Corp.'s manufacture " MSP-N050 " type, volume average particle size
0.6μm)
F4：Poly methyl silsesquioxane particulate (Nikko Rica Corp.'s manufacture " MSP-3500 " type, volume average particle size
5.0μm)
F5：Poly methyl silsesquioxane particulate (Nikko Rica Corp.'s manufacture " MSP-4000 " type, volume average particle size
3.0μm)
F6：(" (Le of ト レ パ mono- is registrar to the Le PPS " of ト レ パ mono- to Dongli Ltd.'s manufacture to polyphenylene sulfide particulate
Mark) type, 0.8 μm of volume average particle size)
F7：Silicone resin particulate (Shin-Etsu Chemial Co., Ltd's manufacture " X52-854 " type, the μ of volume average particle size 0.8
m)
F8：Silicone resin particulate (Shin-Etsu Chemial Co., Ltd's manufacture " MMP-594 " type, the μ of volume average particle size 0.8
m)
F9：SiO2Particulate (Japanese AEROSIL Co., Ltd. manufacture " NAX50 " type, 0.03 μm of volume average particle size)
F10：Polyflon particulate (Co., Ltd. of Xi Duo villages manufacture " KTL-8HM " type, the μ of volume average particle size 4.2
m)
F11：Titanium oxide (Japanese AEROSIL Co., Ltd. manufacture " P25 " type, 0.002 μm of volume average particle size)
F12：Antimony tin composite oxides (smelt company " ATO " type, 0.002 μm of ＜ of volume average particle size and bond by three well mining industry
Resin>
Using viscosity average molecular weigh be 40000, the polycarbonate resin that is made up of the unit from bisphenol Z is used as to bond and sets
Fat.
(embodiment 1~20 and comparative example 1~3)
By the matter of hole transporting material 50 of the species described in the charge generating material of the species described in table 1 and amount, table 1
Measure part, the mass parts of electron transport materials 50 of species described in table 1, the filler of the species described in table 1 and amount, bond tree
The mass parts of fat 100 and the mass parts of tetrahydrofuran 800 are added in ball mill.Mix decentralized processing 50 hours, prepare photosensitive layer
Coating fluid.With dip coating by obtained coating solution on conductive base, at 100 DEG C handle 40 minutes pass through apply
Film removes tetrahydrofuran, obtains the positively charged mono-layer electronic photographic photoreceptor for possessing the photosensitive layer of 25 μm of thickness.
《Evaluate》
For embodiment and the positively charged single layer electronic electrophotographic photoconductor of comparative example, as follows to wear resistance and
Electrical characteristics are evaluated.
The evaluation method of ＜ wear resistances>
Positively charged mono-layer electronic photographic photoreceptor is installed to the printer (Kyocera Mita that electro-mechanical part repacks charged roller into
Co., Ltd. manufactures " FS-5300DN " type).Test, in the environment of 30 DEG C and 80%RH, printing is covered as continuous printing
The test pattern of rate 4% is continuously printed upon in the recording medium of 5000 pieces of A4 sizes (the high-quality PPC paper of Fuji-Xerox's manufacture).
The thickness of photosensitive layer before and after continuous printing experiment is measured, the Thickness Variation of the photosensitive layer after continuous printing experiment is obtained
Amount.According to following benchmark, wear resistance is evaluated by Thickness Variation amount.
Zero (good)：Thickness Variation amount is less than 3 μm.
× (bad)：Thickness Variation amount is more than 3 μm.
The evaluation method ＞ of ＜ electrical characteristics
On the same printer of the printer used in the evaluation with wear resistance, positively charged single layer type electrophotograph is installed
Photoreceptor.Then, using the recording medium same with the evaluation of wear resistance, the test pattern of coverage rate 4% will be printed 30
DEG C and 80%RH in the environment of, be continuously printed upon 2000 pieces of A4 sizes recording medium (Fuji-Xerox manufacture high-quality PPC paper
) on.Sensitivity to the photoreceptor after continuous printing is measured, and the sensitivity for obtaining the front and rear photoreceptor of continuous printing becomes
Change amount.The sensitivity of photoreceptor is measured in the following way.That is, drum sensitivity test machine (GENTEC company systems are utilized
Make), in the state of the powered extremely+700V in surface of photoreceptor is made, by wavelength 780nm monochromatic light (the μ J/cm of light exposure 0.52)
It is radiated at photosensitive surface.Monochromatic light is to be taken out using bandpass filter from the white light of halide lamp.Then, it will be opened from exposure
Surface potential at the time of having begun to pass through 0.1 second is measured as the sensitivity of photoreceptor.According to following benchmark, by photosensitive
Degree variable quantity is evaluated electrical characteristics.
Zero (good)：Sensitivity variable quantity is less than 80V.
× (bad)：Sensitivity variable quantity is more than 80V.
【Table 1】
In embodiment 1~20, in the image processing system for possessing the electro-mechanical part of contact band electrically, it will be provided with containing spy
The positively charged mono-layer electronic photographic photoreceptor for determining the photosensitive layer of filler is used as image carrier.The body of specific filler
Product average grain diameter D50Within the limits prescribed, its include one kind selected from the group that is formed by silicon dioxide microparticle and resin particle with
On particulate.Understand in embodiment 1~20, be not susceptible to the abrasion of photosensitive layer and the change of the sensitivity of photoreceptor.
In comparative example 1, in the image processing system for possessing the electro-mechanical part of contact band electrically, it will not contained in photosensitive layer
The positively charged mono-layer electronic photographic photoreceptor of filler is used as image carrier.Understand in comparative example 1, photosensitive layer hair
Obvious abrasion is given birth to.
In comparative example 2 and 3, obtain in photosensitive layer containing other fillers beyond silicon dioxide microparticle and resin particle
Positively charged mono-layer electronic photographic photoreceptor.If understanding the photoreceptor in the image for possessing the electro-mechanical part of contact band electrically
Used in forming apparatus as image carrier, then obvious change occurs for the sensitivity of photoreceptor.
Claims (5)
1. a kind of positively charged mono-layer electronic photographic photoreceptor, it is characterised in that
The positively charged mono-layer electronic photographic photoreceptor is in the image processing system for possessing the electro-mechanical part of contact band electrically
Used as image carrier,
The positively charged mono-layer electronic photographic photoreceptor has on conductive base to be conveyed comprising charge generating material, electric charge
The photosensitive layer of the single layer structure of material, filler and binding resin,
The filler includes polyphenylene sulfide particulate,
The volume average particle size of the filler is less than more than 5nm and 5 μm.
2. positively charged mono-layer electronic photographic photoreceptor according to claim 1, it is characterised in that
The content of the filler relative to the mass parts of binding resin 100, be more than 0.5 mass parts and 30 mass parts with
Under.
3. the positively charged mono-layer electronic photographic photoreceptor according to claims 1 or 2, it is characterised in that
The filler also includes silicon dioxide microparticle,
The content of silicon dioxide microparticle described in the filler and the content of the resin particle it is total, filled out relative to described
The quality of agent is filled, is more than 80 mass %.
4. the positively charged mono-layer electronic photographic photoreceptor according to claims 1 or 2, it is characterised in that
The filler also includes silicon dioxide microparticle,
The silicon dioxide microparticle is surface-treated with silane coupler or silicone oil.
5. a kind of image processing system, it is characterised in that possess：
Image carrier；
The electro-mechanical part of band electrically is contacted, the electro-mechanical part of contact band electrically makes the surface of described image supporting body powered；
Exposure portion, the exposure portion is exposed to the surface of powered described image supporting body, so that in described image supporting body
Surface formed electrostatic latent image；
The latent electrostatic image developing is toner image by development section, the development section；And
The toner image is transferred to transfer printing body by transfer section, the transfer section from described image supporting body,
Described image supporting body is the positively charged mono-layer electronic photographic photoreceptor described in claims 1 or 2.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-288190 | 2012-12-28 | ||
| JP2012288190A JP5814222B2 (en) | 2012-12-28 | 2012-12-28 | Positively charged single layer type electrophotographic photosensitive member and image forming apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN103913962A CN103913962A (en) | 2014-07-09 |
| CN103913962B true CN103913962B (en) | 2017-08-25 |
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| CN (1) | CN103913962B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| JP2017021211A (en) * | 2015-07-10 | 2017-01-26 | 三菱化学株式会社 | Coating liquid for forming single layer type positive charge electrophotographic photoreceptor photosensitive layer, electrophotographic photoreceptor, electrophotographic photoreceptor cartridge, 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 |
| JP2016095513A (en) * | 2014-11-10 | 2016-05-26 | 三菱化学株式会社 | Electrophotographic photoreceptor and image forming apparatus |
| JP6319190B2 (en) * | 2015-05-27 | 2018-05-09 | 京セラドキュメントソリューションズ株式会社 | 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 |
| JP6551004B2 (en) * | 2015-07-24 | 2019-07-31 | 三菱ケミカル株式会社 | Electrophotographic photosensitive member, electrophotographic photosensitive member cartridge, and image forming apparatus |
| JP6443275B2 (en) * | 2015-09-09 | 2018-12-26 | 京セラドキュメントソリューションズ株式会社 | Single layer type electrophotographic photosensitive member, method for producing single layer type electrophotographic photosensitive member, process cartridge, and image forming apparatus |
| CN108700837B (en) * | 2016-02-18 | 2021-08-27 | 京瓷办公信息系统株式会社 | Electrophotographic photoreceptor, process cartridge, and image forming apparatus |
| JP6558322B2 (en) * | 2016-08-01 | 2019-08-14 | 京セラドキュメントソリューションズ株式会社 | Single layer type electrophotographic photosensitive member, image forming apparatus, and process cartridge |
| JP6617663B2 (en) * | 2016-08-26 | 2019-12-11 | 京セラドキュメントソリューションズ株式会社 | Electrophotographic photosensitive member, image forming apparatus, and process cartridge |
| JP6638612B2 (en) * | 2016-09-28 | 2020-01-29 | 京セラドキュメントソリューションズ株式会社 | Electrophotographic photosensitive member, image forming apparatus, and process cartridge |
| JP6665801B2 (en) * | 2017-01-27 | 2020-03-13 | 京セラドキュメントソリューションズ株式会社 | Electrophotographic photoreceptor, image forming apparatus and process cartridge |
| JP6680257B2 (en) * | 2017-04-06 | 2020-04-15 | 京セラドキュメントソリューションズ株式会社 | Electrophotographic photoreceptor, image forming apparatus and process cartridge |
| CN110431489B (en) * | 2017-04-28 | 2023-04-21 | 京瓷办公信息系统株式会社 | Electrophotographic photoreceptor, process cartridge, and image forming apparatus |
| JP7124629B2 (en) * | 2018-10-19 | 2022-08-24 | コニカミノルタ株式会社 | Image forming apparatus and photoreceptor lifetime monitoring method |
| JP2021071696A (en) * | 2019-11-01 | 2021-05-06 | キヤノン株式会社 | Electrophotographic photoreceptor, process cartridge, and electrophotographic device |
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| JPS60207146A (en) * | 1984-03-31 | 1985-10-18 | Minolta Camera Co Ltd | Electrophotographic sensitive body |
| JPS60256147A (en) * | 1984-05-31 | 1985-12-17 | Minolta Camera Co Ltd | Electrophotographic sensitive body |
| JPS63249152A (en) * | 1987-04-06 | 1988-10-17 | Canon Inc | Electrophotographic sensitive body |
| JPS6476057A (en) * | 1987-09-18 | 1989-03-22 | Canon Kk | Electrophotographic sensitive body |
| JPH06230590A (en) * | 1993-01-29 | 1994-08-19 | Canon Inc | Electrophotographic sensitive body and electro-photographic device with the same |
| JPH11184101A (en) * | 1997-12-18 | 1999-07-09 | Fuji Xerox Co Ltd | Electrophotographic photoreceptor and electrophotographic apparatus using same |
| JP2002107979A (en) * | 2000-09-27 | 2002-04-10 | Kyocera Mita Corp | Electrophotographic photoreceptor |
| JP2002116565A (en) * | 2000-10-11 | 2002-04-19 | Kyocera Mita Corp | Electrophotographic photoreceptor |
| JP3944072B2 (en) * | 2001-12-21 | 2007-07-11 | キヤノン株式会社 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus |
| JP2003302776A (en) * | 2002-04-08 | 2003-10-24 | Ricoh Co Ltd | Single layer electrophotographic photoconductor and process cartridge and electrophotographic apparatus having the same |
| JP2006276806A (en) * | 2005-03-03 | 2006-10-12 | Ricoh Co Ltd | Electrostatic latent image carrier, and image forming method, image forming apparatus, and process cartridge using same |
| JP4204569B2 (en) * | 2005-03-31 | 2009-01-07 | 京セラミタ株式会社 | Electrophotographic photosensitive member and image forming apparatus |
| JP5084412B2 (en) * | 2007-09-07 | 2012-11-28 | キヤノン株式会社 | Image forming apparatus and intermediate transfer belt |
| JP5106078B2 (en) * | 2007-12-12 | 2012-12-26 | キヤノン株式会社 | Method for producing electrophotographic photosensitive member |
| 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 |
| JP5151578B2 (en) * | 2008-03-14 | 2013-02-27 | 株式会社リコー | Electrophotographic photosensitive member manufacturing method, electrophotographic photosensitive member, image forming apparatus, and process cartridge |
| JP2011209500A (en) * | 2010-03-30 | 2011-10-20 | Kyocera Mita Corp | Positive charging monolayer electrophotographic photoreceptor and image forming apparatus |
-
2012
- 2012-12-28 JP JP2012288190A patent/JP5814222B2/en not_active Expired - Fee Related
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2013
- 2013-12-05 CN CN201310652315.XA patent/CN103913962B/en active Active
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| JP2014130236A (en) | 2014-07-10 |
| CN103913962A (en) | 2014-07-09 |
| JP5814222B2 (en) | 2015-11-17 |
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