CN102902171B - Electrophotographic photoreceptor using bis (triphenylamine) derivatives and imaging forming apparatus - Google Patents
Electrophotographic photoreceptor using bis (triphenylamine) derivatives and imaging forming apparatus Download PDFInfo
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- CN102902171B CN102902171B CN201210258142.9A CN201210258142A CN102902171B CN 102902171 B CN102902171 B CN 102902171B CN 201210258142 A CN201210258142 A CN 201210258142A CN 102902171 B CN102902171 B CN 102902171B
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- triphenylamine
- photoreceptor
- electrophtography photosensor
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- SJHHDDDGXWOYOE-UHFFFAOYSA-N oxytitamium phthalocyanine Chemical compound [Ti+2]=O.C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 SJHHDDDGXWOYOE-UHFFFAOYSA-N 0.000 description 1
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- 229910052763 palladium Inorganic materials 0.000 description 1
- AZQWKYJCGOJGHM-UHFFFAOYSA-N para-benzoquinone Natural products O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000013404 process transfer Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- DNXIASIHZYFFRO-UHFFFAOYSA-N pyrazoline Chemical compound C1CN=NC1 DNXIASIHZYFFRO-UHFFFAOYSA-N 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- RQGPLDBZHMVWCH-UHFFFAOYSA-N pyrrolo[3,2-b]pyrrole Chemical compound C1=NC2=CC=NC2=C1 RQGPLDBZHMVWCH-UHFFFAOYSA-N 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
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- RINCXYDBBGOEEQ-UHFFFAOYSA-N succinic anhydride Chemical class O=C1CCC(=O)O1 RINCXYDBBGOEEQ-UHFFFAOYSA-N 0.000 description 1
- XIUROWKZWPIAIB-UHFFFAOYSA-N sulfotep Chemical compound CCOP(=S)(OCC)OP(=S)(OCC)OCC XIUROWKZWPIAIB-UHFFFAOYSA-N 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
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- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium(II) oxide Chemical compound [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000005945 translocation Effects 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- AAAQKTZKLRYKHR-UHFFFAOYSA-N triphenylmethane Chemical compound C1=CC=CC=C1C(C=1C=CC=CC=1)C1=CC=CC=C1 AAAQKTZKLRYKHR-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
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Landscapes
- Photoreceptors In Electrophotography (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Cleaning In Electrography (AREA)
Abstract
The invention provides an electrophotographic photoreceptor using bis (triphenylamine) derivatives and an imaging forming apparatus provided with a DC voltage application type electrification portion having a contact charging manner. The electrophotographic photoreceptor is of positively charged single-layer type of the bis (triphenylamine) derivatives represented in the formula (1). By using the bis (triphenylamine) derivatives, the electrophotographic photoreceptor producing no transfer memories is provided. Furthermore, the image forming apparatus can continuously provide good images because of being provided with such an electrophotographic photoreceptor to serve as an image bearing body.
Description
Technical field
The present invention relates to contain double（Triphenylamine）The positively charged mono-layer electronic photographic photoreceptor of derivant and possess above-mentioned
Image processing system of the Electrophtography photosensor as image carrier.
Background technology
The Electrophtography photosensor that the image processing system of electrofax mode possesses has inorganic photoreceptor and organic sense
Body of light, inorganic photoreceptor possess the photosensitive layer being made up of inorganic material such as selenium, amorphous silicons, and Organophotoreceptor possesses main by gluing
The photosensitive layer that the organic materials such as knot agent resin, charge generating, electric charge agent delivery are constituted.And, among these photoreceptors, by
In the Organophotoreceptor easy to manufacture compared with inorganic photoreceptor, the material of photosensitive layer can be selected from the material of relative broad range, be set
The degree of freedom of meter is high and be used widely.
First, as Organophotoreceptor, it is known that possess the sense comprising charge generating and electric charge agent delivery in same layer
The single-layer type Organophotoreceptor of photosphere.It is known to press charge generating layer with conductive base upper strata（Containing charge generating）And electricity
Lotus transfer layer（Containing electric charge agent delivery）Laminated-type Organophotoreceptor compare, the letter of the Rotating fields of above-mentioned single-layer type Organophotoreceptor
List and easy to manufacture, while the generation of paint film defect can be suppressed.
In the image processing system using this Electrophtography photosensor, implement comprising following 1）～5）The image of operation
Formation process.
1）The operation for making the surface of Electrophtography photosensor powered
2）Expose powered Electrophtography photosensor surface, so as to form the operation of electrostatic latent image
3）The operation of toner development is carried out in the state of developing bias are applied to electrostatic latent image
4）The toner image of formation is transferred to by discharged-area development mode for the operation of transfer printing body
5）Toner image to being transferred on transfer printing body carries out heating fixing operation
Find in this image formation process, use due to making Electrophtography photosensor rotation, therefore follow previous
The current potential of the part being exposed in ring（Bright current potential）Residual, even across the powered operation of subsequent cycle, in above-mentioned part also not
Desired hot-line electrical potential can be obtained（Dark potential）Phenomenon（Transfer storage（Translocation write メ モ リ-））.Then, produce transfer storage
Part is changed with the image color of the part for not producing transfer storage, there is a problem of being difficult to obtain good image.
On the other hand, mono-layer electronic photographic photoreceptor has positively charged type and negatively charged type, the band of Electrophtography photosensor
Electrically there is contact band electrically with noncontact band electrically, when the surface for making Electrophtography photosensor is powered, from hardly
Can produce from the aspect of bringing the oxidizing gas such as dysgenic ozone to Electrophtography photosensor life-span and office environment,
It is preferred that contact band electrically is combined to use with positively charged mono-layer electronic photographic photoreceptor.
However, contact band electrically in, due to region of discharge it is narrow therefore powered with the noncontact using charger etc.
Mode is compared, and chargeability is poor, it is difficult to make Electrophtography photosensor uniformly powered.Therefore, in band is contacted electrically,
In order to improve the charging uniformity on Electrophtography photosensor surface, alternating voltage or alternating voltage are applied to Electrophtography photosensor
The overlapping voltage Chong Die with DC voltage.However, in this case, although the problem of charging uniformity can be eliminated, but
The hot-line electrical potential that there is Electrophtography photosensor surface due to the negative composition of alternating voltage is reduced.
Therefore, from from the viewpoint of making powered to the desired current potential in Electrophtography photosensor surface, contacting powered side
In formula, apply DC voltage more.However, in above-mentioned charged method, although Electrophtography photosensor surface can be made powered extremely
Desired current potential, but as the current potential on Electrophtography photosensor surface is still unstable, exist
Topic.
Consider from this reason, form dress by contacting the image of the electro-mechanical part that band electrically applies DC voltage possessing
In putting, during using positively charged mono-layer electronic photographic photoreceptor, it is very easy to produce transfer storage, easily produces transfer storage
Produce the images such as brought ghost image bad.
In order to suppress to transfer the generation of storage, the use of the excellent electric charge agent delivery of charge delivery capability is effective.As
The concrete example of the excellent electric charge agent delivery of above-mentioned charge delivery capability, patent documentation 1（Japanese Unexamined Patent Publication 07-244390）Middle public affairs
Open double（Triphenylamine）Derivant, even if but using this pair（Triphenylamine）Derivant is also difficult to the product for completely inhibiting transfer storage
It is raw.
The content of the invention
It is an object of the present invention to provide can suppress possessing contact band DC voltage application type electro-mechanical part electrically
Image processing system in produce transfer storage, containing double（Triphenylamine）The positively charged single layer type electrophotograph of derivant is photosensitive
Body.Additionally, present invention offer possesses above-mentioned positively charged mono-layer electronic photographic photoreceptor and is formed as the image of image carrier
Device.
The mono-layer electronic photographic photoreceptor that one scheme of the present invention is related to is characterised by that photosensitive layer contains following formulas
（1）What is represented is double（Triphenylamine）Derivant.
[formula（1）In, R1～R6Can be alkyl that carbon number is 1～4 with identical or different, m, n, l, p, q and r are 0
～3 integer].
By using containing this pair（Triphenylamine）The mono-layer electronic photographic photoreceptor of derivant, can suppress possess contact
The generation of the transfer storage in the image processing system of band electro-mechanical part electrically.
The image processing system that one scheme of the present invention is related to is characterised by possessing：
Image carrier；
Electro-mechanical part, the electro-mechanical part make the surface of described image supporting body powered；
Exposure portion, the exposure portion expose the surface of powered described image supporting body, so as to carry in described image
Electrostatic latent image is formed on the surface of body；
The latent electrostatic image developing is toner image by development section, the development section；With
The toner image is transferred to transfer printing body from described image supporting body by transfer section, the transfer section,
Described image supporting body is using described double（Triphenylamine）The mono-layer electronic photographic photoreceptor of derivant.
According to the technical scheme, discovery can obtain the stable image processing system of the generation that can suppress to transfer storage.
The present invention further other purposes, the specific advantage obtained according to the present invention can be by the reality of following explanation
Apply mode and definitely.
Description of the drawings
Fig. 1 is the figure of the structure of the positively charged mono-layer electronic photographic photoreceptor for representing the present invention.
Fig. 2 is the structure diagram of of the image processing system for representing the present invention.
Fig. 3 is the relation between the absolute value of the dipole moment of the cavity conveying agent for representing the present invention and transfer storage current potential
Figure.
Specific embodiment
Hereinafter, embodiments of the present invention are illustrated, but the invention is not restricted to these embodiments.
[first embodiment]
First embodiment is related to photosensitive layer and contains following formulas（1）What is represented is double（Triphenylamine）Derivant is defeated as hole
Send the positively charged mono-layer electronic photographic photoreceptor of agent.
（Formula（1）In, R1～R6Can be alkyl that carbon number is 1～4 with identical or different, m, n, l, p, q and r are 0
～3 integer）.
As shown in figure 1, the positively charged mono-layer electronic photographic photoreceptor of first embodiment possess conductive base 12 with
And the list containing charge generating, cavity conveying agent, electron transporting agent and resin glue formed on conductive base 12
The photosensitive layer 14 of layer.And, if positively charged mono-layer electronic photographic photoreceptor possesses conductive base 12 and photosensitive layer 14, no
It is particularly limited to.Specifically, for example such as Fig. 1（a）Shown positively charged mono-layer electronic photographic photoreceptor 10 like that, can led
Electrically photosensitive layer 14 is directly provided with matrix 12, it is also possible to such as Fig. 1（b）Shown positively charged mono-layer electronic photographic photoreceptor
10 ' like that, possess intermediate layer 16 between conductive base 12 and photosensitive layer 14.Additionally, such as Fig. 1（a）Or Fig. 1（b）Institute
Show, photosensitive layer 14 can become outermost layer and expose, it is also possible to such as Fig. 1（c）Shown positively charged single layer type electrophotograph sense
Body of light 10 " like that, possesses protective layer 18 on photosensitive layer 14.
Hereinafter, for positively charged mono-layer electronic photographic photoreceptor, successively conductive base and photosensitive layer are illustrated.
[conductive base]
It is for conductive base, if can be used as the conductive base of positively charged mono-layer electronic photographic photoreceptor, not special
Do not limit.Specifically, the conductive material of apparatus can be enumerated and at least constitutes conductive base of surface element etc..That is, have
Say can for example be the conductive base formed by the material with electric conductivity body, or the material plastic covering that apparatus is conductive
The conductive base on the surface of material etc..Additionally, the material with electric conductivity can enumerate for example aluminum, ferrum, copper, stannum, platinum,
Silver, vanadium, molybdenum, chromium, cadmium, titanium, nickel, palladium, indium, rustless steel, pyrite etc..Additionally, as the material with electric conductivity, can be using one kind
The two or more combinations of materials with electric conductivity can also be used, such as with alloy etc. by material with electric conductivity in addition
Mode is used.Additionally, as conductive base, in the example above, preferably being formed by aluminum or aluminum alloy.Thus, it is possible to provide can
Form the positively charged mono-layer electronic photographic photoreceptor of more preferable image.It is thought that as electric charge is from photosensitive layer to conductive base
Migration it is well caused.
The shape of conductive base can be suitably selected according to the structure of the image processing system for using, for example can be preferred
Using the matrix of lamellar, drum type etc..Additionally, the thickness of conductive base can be suitably selected according to above-mentioned shape.
[photosensitive layer]
As the photosensitive layer that positively charged mono-layer electronic photographic photoreceptor possesses, if including at least charge generating, sky
The photosensitive layer of the single layer structure of cave agent delivery and resin glue, and cavity conveying agent is following formulas（1）What is represented is double（Triphen
Amine）Derivant, then be not particularly limited.
（Formula（1）In, R1～R6Can be alkyl that carbon number is 1～4 with identical or different, m, n, l, p, q and r are 0
～3 integer）.
The photosensitive layer of the positively charged mono-layer electronic photographic photoreceptor of first embodiment, due to excellent in charge delivery capability
Contain formula in the middle of different cavity conveying agent（1）What is represented is double（Triphenylamine）Derivant is used as cavity conveying agent, therefore can press down
Make the transfer storage produced in the transfer printing process of image formation process.
Hereinafter, the transfer storage to producing in image formation process is illustrated.
Generally, using electrofax mode image formation process comprising powered operation, exposure process, developing procedure, turn
Print operation, except electrician's sequence etc..In initial operation, i.e. powered operation, by making the positively charged list as image carrier surface
Stratotype Electrophtography photosensor it is uniformly powered to certain potentials, so as to positive electric charge.Then, in exposure process
In, the surface of the powered positively charged mono-layer electronic photographic photoreceptor to certain potentials is exposed, and is consequently formed electrostatic latent image.
Further, in developing procedure, toner is given by the part to above-mentioned exposure, thus, it is possible to form toner
Image, electrostatic latent image are visualized.And, in transfer printing process, it is formed in the table of positively charged mono-layer electronic photographic photoreceptor
The toner image in face is transferred to middle transfer body.Here, above-mentioned toner image is transferred to above-mentioned middle transfer body
In operation, the middle transfer body is applied and the negative polarity of the opposite charge polarity of positively charged mono-layer electronic photographic photoreceptor
Bias.
To above-mentioned middle transfer body apply negative polarity bias when, above-mentioned exposure partially due to its surface have constitute
The toner of toner image, even if therefore applying the polarity when bias of above-mentioned negative polarity also can remain powered（Positive polarity）.
However, unexposed partially due to do not have the toner for constituting toner image on its surface therefore inclined due to negative polarity
Pressure can with powered opposite polarity（Negative polarity）Electric charge.As a result the exposure on positively charged mono-layer electronic photographic photoreceptor
Transfer storage when image after partly there is with unexposed part the current potential of opposed polarity, the potential difference to become is formed is produced
The reason for.
Therefore, in the present invention, the electric charge of the negative polarity of the above-mentioned unexposed portion of the reason for becoming transfer storage passes through
The formula that photosensitive layer contains（1）The effect of the cavity conveying agent of expression, makes above-mentioned potential difference disappear, and produces in suppressing transfer printing process
Transfer storage.
Hereinafter, to the charge generating as the composition for constituting photosensitive layer, cavity conveying agent, electron transporting agent, binding agent
Resin and additive and positively charged mono-layer electronic photographic photoreceptor and its manufacture method are illustrated.
（Charge generating）
If charge generating can be used then not as the charge generating of positively charged mono-layer electronic photographic photoreceptor
It is particularly limited to.Specifically, such as following formula can be enumerated（I）The X-type metal-free phthalocyanine of expression（X-H2Pc）, Y-shaped oxygen titanium phthalocyanines
（Y-TiOPc）, perylene pigment, disazo pigment, dithione pyrrolopyrrole（dithioketo-pyrrolopyrrole）
Pigment, without metal naphthalene phthalocyanine pigment, metal naphthalene phthalocyanine pigment, square acid color, trisazo pigment, indigo pigments, azulenesFace
Material（azulenium pigment）, phthalocyanine pigments, the inorganic light conductive material such as selenium, selenium-tellurium, selenium-arsenic, cadmium sulfide, non-crystalline silicon
Powder, pyransSalt, anthanthrene quinones pigment, triphenylmethane pigment, intellectual circle's class pigment, toluene amines pigment, pyrazolines
Pigment and quinacridone-type pigments etc..
Additionally, charge generating may be used alone or in combination it is two or more using, to have in desired region
Absorbing wavelength.Further, especially for numerals such as the laser beam printers or facsimile machine using light sources such as semiconductor lasers
The image processing system of optical system, needs the wavelength region in more than 700nm to have the positively charged single-layer type electronics of light sensitivitys
Electrophotographic photoconductor, so such as phthalocyanines face such as metal-free phthalocyanine, titanyl phthalocyanine is preferably used in above-mentioned each charge generating
Material.And, the crystal formation of above-mentioned phthalocyanine pigment is not particularly limited, it is possible to use the phthalocyanine pigment of various crystal formations.Additionally, right
In the image processing system of the simulated optical systems such as the electrostatic photocopier using white light sources such as halide lamps, need in visual field
Domain has the positively charged mono-layer electronic photographic photoreceptor of light sensitivitys, therefore preferably uses such as perylene pigment, bisazo
Pigment etc..
（Cavity conveying agent）
Cavity conveying agent is following formulas（1）What is represented is double（Triphenylamine）Derivant.
（Formula（1）In, R1～R6Can be alkyl that carbon number is 1～4 with identical or different, m, n, l, p, q and r are 0
～3 integer）.
Formula（1）In R1~R6Concrete example be methyl, ethyl, n-pro-pyl, isopropyl, normal-butyl, isobutyl group, Zhong Ding
Base, the tert-butyl group.In formula（1）In, equivalent to double（Triphenylamine）M, n, l, p, q and r sum of the alkyl groups that derivant has
Preferably less than 10 integer, more preferably 1 ~ 4 integer.Formula（1）What is represented is double（Triphenylamine）Derivant has above-mentioned model
When enclosing interior alkyl groups, by the number and species that select alkyl, it is easily adjusted described later double（Triphenylamine）The idol of derivant
The value of polar moment.Additionally, when alkyl groups are excessive, it is double（Triphenylamine）The molecule quantitative change of derivant is big, in order to obtain desired effect
Really, it is sometimes desirable to substantial amounts of double（Triphenylamine）Derivant.
Structural optimization calculating calculation that cavity conveying agent preferably uses PM3 parameters, being calculated using semiempirical molecular orbital
The value of the dipole moment for going out is less than 1.20.Formula（1）What is represented is double（Triphenylamine）In derivant, using the dipole moment of above-mentioned value
During compound, easily suppress the generation of transfer storage.
Additionally, the value of the more preferably above-mentioned dipole moment of cavity conveying agent is less than 1.00 cavity conveying agent.Formula（1）Represent
It is double（Triphenylamine）In derivant, using the dipole moment of above-mentioned value compound when, particularly good can suppress transfer storage
Generation, therefore, easily form the good image for not having the images such as ghost image bad.
Using PM3 parameters, the structural optimization calculating using semiempirical molecular orbital calculating can for example pass through
MOPAC97 programs etc. are carrying out.
Formula（1）In the triphenylamine derivative of expression, as the concrete example of preferred compound, can enumerate following
HTM-1~HTM-5.And, the numerical value for being attached to the bottom right of structural formula of compound is that the use MOPAC97 programs of each compound are obtained
Dipole moment value of calculation.
These compounds due to dipole moment value of calculation be less than 1.00, from particularly good can suppress transfer storage
It is preferred compound from the aspect of generation.
Mutual-through type（1）The preparation method of the compound of expression is not particularly limited.As formula（1）The system of the compound of expression
Preparation Method, can enumerate for example makes formula（2）1,2- xylylene two banks tetra-ethyl esters and formula（3）The triphenylamine of expression
Derivatives reaction is preparing formula（4）The compound of expression, then, makes formula（4）The compound and formula of expression（5）Represent
Following methods of triphenylamine derivative reaction.And, for formula（3）~（5）, R1~R6, m, n, l, p, q and r and formula（1）Phase
Together.
If cavity conveying agent is not being hindered in the range of the object of the invention, except formula（1）What is represented is double（Triphenylamine）
Outside derivant, the various compounds for being used as cavity conveying agent all the time in Electrophtography photosensor can also be contained.Make
For can be with formula（1）The cavity conveying agent that the compound of expression is used together, can enumerate for example benzidine derivative, 2,5-
Two（4- methylamino phenyl）-1,3,4-Diazole etc.Diazoles compound, 9-（4- diethylamino styryls）Anthracene etc.
The carbazole compounds such as styrene compound, Polyvinyl carbazole, organopolysilane compound, 1- phenyl -3-（To dimethyl
Aminophenyl）The pyrazoline compounds such as pyrazoline, hydrazone compounds, formula（1）Triphen amine outside the compound of expression
Compound, Benzazole compounds,It is azole compounds, differentAzole compounds, thiazole compound, thiadiazole compound,
The nitrogenous ring type compound such as glyoxaline compound, pyrazole compound, triazole class compounds, fused-polycyclic compounds etc..
（Electron transporting agent）
If electron transporting agent is not hindering, in the range of the object of the invention, to be not particularly limited, can exist from all the time
It is appropriate in electron transporting agent used in the photosensitive layer of positively charged mono-layer electronic photographic photoreceptor to select to use.As preferred
Electron transporting agent concrete example, naphthoquinone derivatives, diphenoquinone, anthraquinone derivative, azo quinone can be enumerated
（azoquinone）The quinone derivatives such as derivant, nitroanthraquinone derivant, dinitroanthraquinone derivant, Cyanoacetyl-Cyacetazid derivant, thiophene
Mutter derivant, trinitro- thioxanthone derivates, 3,4,5,7- tetranitros -9-Fluorenone derivant, dinitro anthracene derivant, dinitro
Acridine derivatives, 1,1,2,2-tetracyanoethene, 2,4,8- trinitro- thiaxanthones, dinitro benzene, dinitro anthracene, dinitro acridine, succinic anhydrides,
Maleic anhydride and dibromomaleic acid acid anhydride etc..Among them, more preferably quinone derivative.
（Resin glue）
If the binding agent that resin glue contains in can serve as the photosensitive layer of positively charged mono-layer electronic photographic photoreceptor
Resin is then not particularly limited.As the concrete example of the resin for being preferably used as resin glue, polycarbonate resin, benzene can be enumerated
Vinyl resins, SB, SAN, styrene-maleic acid copolymer, benzene second
Alkene-acrylic copolymer, acrylic copolymer, polyvinyl resin, vinyl-vinyl acetate copolymer, chlorinated polyethylene resin,
It is Corvic, acrylic resin, ionomer, vinyl chloride vinyl acetate copolymer, alkyd resin, polyamide, poly-
Urethane resin, polyarylate resin, polysulfone resin, diallyl phthalate resin, ketone resin, polyvinyl butyral resin tree
The thermoplastic resins such as fat, polyether resin, polyester resin, organic siliconresin, epoxy resin, phenolic resin, carbamide resin, tripolycyanamide
The thermosetting resins such as resin, other bridging property thermosetting resins, Epocryl, polyurethane acrylic emulsion copolymerization tree
The light-cured resins such as fat.These resins can be used alone, and two or more uses also can be combined.
Among these resins, from the sense for obtaining processability, mechanical characteristic, optical characteristic, the balancing good of wear resistance
From the viewpoint of photosphere, more preferably bisphenol z-polycarbonate resin, bisphenol Z c-type polycarbonate resin, the poly- carbonic acid of bisphenol-c type
The polycarbonate resin such as ester resin and bisphenol A polycarbonate resin.
（Additive）
Harmful effect will not brought to electrofax characteristic in the photosensitive layer of positively charged mono-layer electronic photographic photoreceptor
In the range of, in addition to charge generating, cavity conveying agent, electron transporting agent and resin glue, can also add comprising various
Plus agent.The additive that can be coupled in photosensitive layer can enumerate such as antioxidant, radical scavenger, singlet quencher
（singlet quencher）, anti-deterioration agent, softening agent, plasticizer, surface modifier, extender, the increasing such as UV absorbent
Thick dose, dispersion stabilizer, wax, receptor, donor, surfactant and levelling agent etc..
（The manufacture method of positively charged mono-layer electronic photographic photoreceptor）
If the manufacture method of positively charged mono-layer electronic photographic photoreceptor is not being hindered in the range of the object of the invention, no
It is particularly limited to.The preference of the manufacture method of positively charged mono-layer electronic photographic photoreceptor can be enumerated and be applied on conductive base
The method that the coating fluid of cloth photosensitive layer forms photosensitive layer.Specifically, by charge generating, cavity conveying agent, electron transport
The coating solution that agent, resin glue and the various additives that add as needed etc. are dissolved or dispersed in solvent
On conductive base, it is dried, thus can manufactures photosensitive layer.Coating process is not particularly limited, can enumerate for example makes
With spin coater, the deposited method for smearing machine, flush coater, wire rod coating, dip coated machine, dip coater, scraper etc..Additionally, being formed in electric conductivity
The drying meanss of the film on matrix can be enumerated for example carries out hot air drying under conditions of 80～150 DEG C, 15～120 minutes
Method etc..
In positively charged mono-layer electronic photographic photoreceptor, charge generating, cavity conveying agent, electron transporting agent and bonding
Each content of agent resin suitably can be selected, and be not particularly limited.Specifically, the content of such as charge generating is relative to binding agent
100 mass parts of resin, preferably 0.1～50 mass parts, more preferably 0.5～30 mass parts.The content of electron transporting agent is relative
In 100 mass parts of resin glue, more preferably preferably 5～100 mass parts, 10～80 mass parts.Cavity conveying agent contains
Amount is relative to 100 mass parts of resin glue, more preferably preferably 5～500 mass parts, 25～200 mass parts.Additionally, empty
The content of the total amount of cave agent delivery and electron transporting agent, i.e. electric charge agent delivery relative to 100 mass parts of resin glue, preferably
20～500 mass parts, more preferably 30～200 mass parts.
The photosensitive layer thickness of positively charged mono-layer electronic photographic photoreceptor, as long as photosensitive layer can fully be played a part of, then
It is not particularly limited.Specifically, such as preferably 5～100 μm, more preferably 10～50 μm.
As long as the solvent contained by the coating fluid of photosensitive layer can dissolve or disperse each composition of composition photosensitive layer, then not special
Do not limit.Specifically, the alcohols such as methanol, ethanol, isopropanol, butanol can be enumerated；The fat such as normal hexane, octane, hexamethylene
Race's hydrocarbon；The aromatic hydrocarbons such as benzene,toluene,xylene；The halogenated hydrocarbons such as dichloromethane, dichloroethanes, carbon tetrachloride, chlorobenzene；Dimethyl ether,
The ethers such as diethyl ether, tetrahydrofuran, glycol dimethyl ether, diethylene glycol dimethyl ether；Acetone, butanone, methylisobutylketone, Ketohexamethylene
Deng ketone；The esters such as ethyl acetate, methyl acetate；The aprotic polars such as dimethylformaldehyde, dimethylformamide, dimethyl sulfoxide
Organic solvent.These solvents can be used alone, and two or more uses also can be combined.
Positively charged mono-layer electronic photographic photoreceptor can be used as the DC voltage applying for possessing contact band electrically described later
The image carrier of the image processing system of type electro-mechanical part.Thus, even if in the powered polarity of mono-layer electronic photographic photoreceptor
For positively charged, band electrically to apply the easy generation transfer storage electrically of the contact band of DC voltage under conditions of, also can
Suppress transfer storage, it is possible thereby to the generation for suppressing image bad.
[second embodiment]
Second embodiment is related to image processing system, possesses image carrier；Electro-mechanical part, the electro-mechanical part carry image
The surface of body is powered；Exposure portion, the exposure portion expose the surface of powered image carrier, so as to the table in image carrier
Electrostatic latent image is formed on face；Latent electrostatic image developing is toner image by development section, the development section；And transfer section, the transfer section
Toner image is transferred to into transfer printing body from image carrier, just band in first embodiment is being used as image carrier
Band mono-layer electronic photographic photoreceptor.
Additionally, the image processing system of the present invention is applicable to monochrome image forms device, color image forming device
Any one, but color image forming device of the series system using multiple color toner is illustrated at this.
And, in order to form toner image by the toner of different colours respectively on each face, the tool for below illustrating
The standby band just image processing system with mono-layer electronic photographic photoreceptor possesses multiple images supporting body and multiple development sections, and this is more
Individual image carrier in the prescribed direction and sets, and the plurality of development section is with oppositely disposed with each image carrier, on the surface
Carry and transport toner, the toner of transport is supplied respectively to the developer roll on each image carrier surface, each image carrier
Respectively using the just band mono-layer electronic photographic photoreceptor of the band in first embodiment.
Fig. 2 is to represent the color image forming device knot for possessing the band just series system with mono-layer electronic photographic photoreceptor
The schematic diagram of structure.Here, as image processing system, illustrating by taking color printer 1 as an example.
As shown in Fig. 2 the color printer 1 has the equipment body 1a of box, confession is provided with equipment body 1a
To the sheet feed section 2 with paper P, the use paper P that supplied by the sheet feed section 2 of transport and the toner image based on view data etc. transferred
At this with the image forming part 3 on paper P, and to being transferred in the unfixed toner image on paper P using the image forming part 3
Enforcement is fixed on the fixing section 4 with the fixing process on paper P.Further, it is provided with above equipment body 1a and exports profit
The paper delivery portion 5 of the use paper P of fixing process is implemented with fixing section 4.
Sheet feed section 2 includes paper feeding cassette 121, takes paper bowl 122, paper feed roller 123,124,125 and resistance roller 126.Paper feeding cassette
121 are arranged to dismount from equipment body 1a, and store various sizes uses paper P.Take paper bowl 122 and be arranged on the paper supply shown in Fig. 2
The upper left side position of box 121, takes out to be stored in one by one and uses paper P in paper feeding cassette 121.Paper feed roller 123,124,125 will be logical
Cross and take being passed out to paper P and using paper-delivering path for the taking-up of paper bowl 122.Resistance roller 126 makes to send by paper feed roller 123,124,125
To after being waited for paper-delivering path paper P, image forming part 3 is supplied to the timing for specifying.
Additionally, sheet feed section 2 further includes the manual pallet of the left surface installed in the equipment body 1a shown in Fig. 2（Not
Diagram）With take paper bowl 127.This takes paper bowl 127 and takes out to be positioned in uses paper P on manual pallet.Using the use for taking the taking-up of paper bowl 127
Paper P is passed out to by paper feed roller 123,125 and is used paper-delivering path, is supplied to image shape with the timing for specifying by resistance roller 126
Into portion 3.
Image forming part 3 includes image formation unit 7；Intermediate transfer belt 31, based on the figure from electric transmissions such as computers
As the toner image of data is transferred to its surface by the image formation unit 7（Contact surface）；With secondary transfer roller 32,
Toner image on the intermediate transfer belt 31 is secondarily transferred to paper P is used from what paper feeding cassette 121 was sent into.
Image formation unit 7 is included from upstream side（It is right side in Fig. 2）The black unit that side arranges 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 and be equipped with along arrow（Clockwise）The positively charged single layer type electrophotograph as image carrier that direction rotates is photosensitive
Body 37（It is below photoreceptor 37）.And, band is each configured with successively from rotation direction upstream side around each photoreceptor 37
Electric portion 39, exposure portion 38, development section 71, cleaning section（It is not shown）De-power unit as needed（It is not shown）.And, photoreceptor
The 37 positively charged mono-layer electronic photographic photoreceptors for using the Electrophtography photosensor being related to as first embodiment.
Electro-mechanical part 39 makes the side face of the photoreceptor 37 for rotating in the direction of the arrow equably powered.As the concrete of electro-mechanical part 39
Example, can enumerate makes the side face of photoreceptor 37 in charged roller or in the state of contacting with photoreceptor 37 with brush etc.（Surface）It is powered
, the charged roller for possessing the way of contact and the electro-mechanical part with brush etc., preferably use the electro-mechanical part for possessing charged roller.
Possess the electro-mechanical part of the charged roller of the way of contact, in the state of charged roller is contacted with photoreceptor 37, turn drivenly
It is dynamic, make the side face of photoreceptor 37（Surface）It is powered.
As this charged roller, roller that for example, at least surface element is made up of resin etc. can be enumerated.Specifically, Ke Yiju
Go out in the state of contacting with photoreceptor 37, be subordinated to the rotation of photoreceptor 37 and rotate, possess what is rotationally supported by axle
Cored bar, the resin bed being formed on cored bar and the charged roller of voltage application portion to cored bar applied voltage etc..Possesses this
The electro-mechanical part for planting charged roller can make the photoreceptor 37 contacted by resin bed by by voltage application portion to cored bar applied voltage
Surface it is powered.
To being not particularly limited to the voltage that charged roller applies by voltage application portion, but with apply alternating voltage or alternating current
Compared with pressing when the overlapping voltage that DC voltage is overlapped, DC voltage is preferably only.DC voltage is only applied to charged roller
When, the trend that the wear extent with photosensitive layer is reduced can form suitable image.
1000～2000V is preferably to the DC voltage that positively charged mono-layer electronic photographic photoreceptor applies, more preferably
1200～1800V, particularly preferably 1400～1600V.
Image processing system includes the electro-mechanical part and the band as image carrier of the applying DC voltage for possessing charged roller
During positive electricity mono-layer electronic photographic photoreceptor, there is the trend for being particularly easy to produce transfer storage, but use the first embodiment party
When the positively charged mono-layer electronic photographic photoreceptor that formula is related to is as image carrier, transfer storage can be suppressed, suppress image
Bad generation.
Additionally, the resin of the resin bed of charged roller is constituted, it is if the side face of photoreceptor 37 can be made powered well, not special
Do not limit.The concrete example of the resin used in resin bed can enumerate organic siliconresin, polyurethane resin, Si modification resin etc..
Additionally, inorganic filling material can be contained in resin bed.
Exposure portion 38 is so-called laser scan unit, and the side face by the photoreceptor 37 of 39 uniform charged of electro-mechanical part is shone
Penetrate based on the personal computer from epigyny device（PC）The laser of the view data of input, is based on view data on photoreceptor 37
Form electrostatic latent image.Development section 71 supplies toner by the side face of the photoreceptor 37 to being formed with electrostatic latent image, based on image
Data form toner image.Then, the toner image is transferred to into intermediate transfer belt 31.Cleaning section is in toning
After agent image terminates to the primary transfer of intermediate transfer belt 31, the toner for remaining in the side face of photoreceptor 37 is cleaned.Remove
Electric portion is de-energized to the side face of photoreceptor 37 after primary transfer terminates.Cleaned by cleaning section and de-power unit
The side face of the photoreceptor 37 of process, in order to implement new on-line treatment, carries out new on-line treatment towards electro-mechanical part.
Intermediate transfer belt 31 is the banding rotor of non junction ring-type, is erected at driven roller 33, driven voller 34, support roller
Multiple rollers such as 35 and primary transfer roller 36 are so that surface（Contact surface）Side is abutted with the side face of each photoreceptor 37 respectively.Additionally, in
Between transfer belt 31 in the state of photoreceptor 37 is expressed to by the primary transfer roller 36 oppositely disposed with each photoreceptor 37, by many
Individual roller carries out non junction rotation.
Driven roller 33 carries out rotation driving by driving sources such as stepping motors, there is provided for making intermediate transfer belt 31 without connecing
The driving force that head is rotated, driven voller 34, support roller 35 and primary transfer roller 36 are rotated arranging freely, with by driven roller
The non junction of 33 intermediate transfer belts 31 for carrying out is rotated and driven rotation.The active of these response driven rollers 33 of roller 34,35,36 turns
It is dynamic that driven rotation is carried out by intermediate transfer belt 31, and intermediate transfer belt 31 is supported.
Primary transfer is biased by primary transfer roller 36（With the powered opposite polarity polarity of toner）It is applied to middle turning
Print band 31.By so process, the toner image being formed on each photoreceptor 37 is transferred successively with repeating coating state（Once
Transfer）To intermediate transfer belt 31, the intermediate transfer belt 31 between each photoreceptor 37 and primary transfer roller 36, by driven roller 33
Drives edge arrow（Counterclockwise）Direction rotates.Then, carry out as needed by except electric light enters to the surface of each photoreceptor 37
Row is except the de-power unit of electricity（It is not shown）Except electricity after, each photoreceptor 37 is further rotated, into next technique.Now, it is more excellent
Choosing does not de-energize operation.When not de-energizing operation, as color printer 1 can form the not composition with de-power unit,
The manufacturing cost that the miniaturization of color printer 1, the reduction of part number of packages bring can therefore reduced.Do not possess de-power unit
When, although it is more prone to transfer storage, but the photoreceptor being related to by using first embodiment is used as photoreceptor 37, i.e.,
Make the color printer 1 not possess de-power unit, it is also possible to suppress transfer storage.
Secondary transfer printing bias with toner image opposite polarity is applied to and uses paper P by secondary transfer roller 32.By so
Process, the toner image being transferred on intermediate transfer belt 31 is transferred to use between secondary transfer roller 32 and support roller 35
Paper P, thus, colored transferred image（Unfixed toner image）It is transferred to and uses paper P.
Fixing section 4 is to implement the fixing part that process, bag with the transferred image of paper P to being transferred in by image forming part 3
Include heating roller 41 and backer roll 42, wherein, heating roller 41 is heated by heating power body, backer roll 42 and the heating roller 41 pairs to
Configure and side face is extruded the side face for abutting to heating roller 41.
And, it is transferred to using secondary transfer roller 32 by image forming part 3 and is led to paper P by this with the transferred image of paper P
The fixing process that heating when crossing between heating roller 41 and backer roll 42 is carried out, is fixed to and uses paper P.And, implement fixing
The use paper P outputs of process are to paper delivery portion 5.Additionally, in the color printer 1 of present embodiment, fixing section 4 and paper delivery portion 5 it
Between suitable position be equipped with transport roller 6.
Paper delivery portion 5 is formed by the top of the equipment body 1a of the color printer 1 that is recessed, at the bottom of the recess of the depression
Portion is formed with the paper discharging tray 51 of the use paper P for receiving output.
By above-mentioned image forming operation, color printer 1 is with forming image, the image of above-mentioned series system on paper P
Device is formed due to possessing the positively charged mono-layer electronic photographic photoreceptor in first embodiment as image carrier, even if
Apply the contact band band electrically of DC voltage electrically, image carrier be positively charged mono-layer electronic photographic photoreceptor
Easy generation transfer storage condition when, be not easy to produce transfer storage, therefore can obtain forming the figure of suitable images
As forming device.
[embodiment]
More specific description is carried out to the present invention by the following examples.And, the present invention is not carried out example and is limited.
In embodiment and comparative example, using following cavity conveying agent（HTM-1~HTM-9）And electron transporting agent（ETM-
1~ETM-4）.And, the numerical value of the bottom right of cavity conveying agent is the value by the calculated dipole moment of MOPAC97 programs.
<HTM-1~HTM-9>
<ETM-1~ETM-4>
[embodiment 1]
By 5 mass parts of metal-free phthalocyanine, cavity conveying agent（HTM-1）50 mass parts, electron transporting agent（ETM-1）35 mass
Part, 100 mass parts of bisphenol z-polycarbonate resin of viscosity-average molecular weight 50,000 and 800 mass parts of tetrahydrofuran are added to ball
Mixing, the decentralized processing of 50 hours in grinding machine, are carried out, the coating fluid of photosensitive layer is prepared.With dip coating by the coating fluid for obtaining
It is coated on conductive substrate, and process removes tetrahydrofuran by film in 40 minutes at 100 DEG C, so as to obtains possessing 30 μm of films
The positively charged mono-layer electronic photographic photoreceptor of thick photosensitive layer.
[embodiment 2 ~ 8 and comparative example 1 ~ 7]
By cavity conveying agent（HTM）And electron transporting agent（ETM）The species of the record of table 1 is changed into, in addition with enforcement
Example 1 is similarly carried out, and obtains positively charged mono-layer electronic photographic photoreceptor.
The positively charged mono-layer electronic photographic photoreceptor obtained in embodiment and comparative example is assembled to electro-mechanical part is changed
Fill the printer of the charged roller for applying DC voltage（FS-5300DN, Kyoji, Meida K.K's system）On, it is inclined by transfer is closed
Blank sheet of paper portion current potential during pressure is evaluated as transfer storage with blank sheet of paper portion difference in voltage when opening transfer bias.Additionally, entering
After row durable printing in 1 hour, observation printing image is evaluated to whetheing there is the bad generation of image.In the evaluation of image, will not
It was observed that the bad situation of image is used as ◎, by the physical control block of one side 10mm（ベタパツチ）In halftoning portion with ghost image
, used as zero, while above-mentioned physical control block is occurred in ghost image mode, the letter of 3mm is with ghost image for the state that mode occurs
But there is, can not be unambiguously read the state of its word as △ in mode, and above-mentioned physical control block is occurred in ghost image mode
While one side 3mm letter using ghost image mode occur, be unambiguously read the state of its word as ×.Transfer storage and image
Evaluation result it is as shown in table 1.
[table 1]
According to 1 ~ embodiment of embodiment 8, if using possessing containing formula（1）What is represented is double（Triphenylamine）Derivant
（HTM-1~HTM-5）As the positively charged mono-layer electronic photographic photoreceptor of the photosensitive layer of cavity conveying agent, even if applying to possess
Plus DC voltage contact band electro-mechanical part electrically, possess positively charged mono-layer electronic photographic photoreceptor as image carrier
Easy generation transfer storage image processing system, it is also possible to suppress transfer storage, form suitable image.
Additionally, the value of calculation of the dipole moment of HTM-1 ~ HTM-5 is all less than 1.00, therefore in 1 ~ embodiment of embodiment 8,
Transfer storage current potential can be suppressed well, can be formed.
On the other hand, according to 1 ~ comparative example of comparative example 7, using containing formula（1）What is represented is double（Triphenylamine）It is derivative
When the positively charged mono-layer electronic photographic photoreceptor of the cavity conveying agent outside thing is as image carrier, possessing applying direct current
The contact band electro-mechanical part electrically of voltage, possess image of the positively charged mono-layer electronic photographic photoreceptor as image carrier
Formed in device, it is impossible to suppress transfer storage, easily produce image bad.
For between the absolute value of 1 ~ embodiment of embodiment 8 and 1 ~ comparative example of comparative example 7, dipole moment and transfer storage current potential
Relation it is as shown in Figure 3.Additionally, for the data of 1 ~ embodiment of embodiment 8, comparative example 1 and 3 ~ comparative example of comparative example 7, carrying out
The near linear that linearisation is obtained is as shown in Figure 3.In the case that the dipole moment of cavity conveying agent is more than 2, due to transfer storage electricity
The absolute value of position is 90 or so value, therefore for the data of 1 ~ embodiment of embodiment 8, comparative example 1 and 3 ~ comparative example of comparative example 7
Carry out linearisation.
According to Fig. 3, the value of calculation of the dipole moment of cavity conveying agent is lower, and the inhibition for transferring storage is higher.This
Outward, according to Fig. 3, for double（Triphenylamine）Derivant, the value of calculation of dipole moment more than 1.00 and for less than 1.20 when, transfer
The absolute value of storage current potential is about 50 ~ 60V.Now, although due to the product that transfer storage is inhibited and image can be suppressed bad
It is raw, but as the absolute value of transfer storage current potential is slightly higher, easily produce ghost image.
Further, according to Fig. 3, for double（Triphenylamine）Derivant, when the value of calculation of dipole moment is less than 1.00,
The absolute value of transfer storage current potential is below 50V.Now, as the absolute value of transfer storage current potential is substantially low, therefore will not produce
Raw ghost image, the picture appraisal carried out in embodiment are judged to " ◎ ".
Claims (6)
1. a kind of Electrophtography photosensor, it is characterised in that formed including at least charge generating, electric charge on conductive base
The photosensitive layer of the single-layer type of agent delivery and resin glue, the photosensitive layer contain any one in following HTM-2～HTM-5
Double (triphenylamine) derivants for representing as the cavity conveying agent and following ETM-1～ETM-4 of the electric charge agent delivery in appoint
One electron transporting agent as the electric charge agent delivery of meaning,
2. Electrophtography photosensor according to claim 1, it is characterised in that the cavity conveying agent is HTM-2, described
Electron transporting agent is ETM-2.
3. Electrophtography photosensor according to claim 1, using PM3 parameters, calculated using semiempirical molecular orbital
The value of the dipole moment of the cavity conveying agent that is calculated by of structural optimization be more than 0.94 and less than 0.98.
4. Electrophtography photosensor according to claim 3, the value of the dipole moment of the cavity conveying agent is 0.97.
5. a kind of image processing system, it is characterised in that possess：
Image carrier；
Electro-mechanical part, the electro-mechanical part make the surface of described image supporting body powered；
Exposure portion, the exposure portion expose the surface of powered described image supporting body, so as in described image supporting body
Surface forms electrostatic latent image；
The latent electrostatic image developing is toner image by development section, the development section；With
The toner image is transferred to transfer printing body from described image supporting body by transfer section, the transfer section,
Electrophtography photosensor of the described image supporting body described in any one in Claims 1 to 4.
6. image processing system according to claim 5, it is characterised in that described image supporting body is to possess single-layer type sense
The positively charged Electrophtography photosensor of photosphere, the electro-mechanical part are contact band DC voltage application type electrically.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-166039 | 2011-07-28 | ||
| JP2011166039A JP5538323B2 (en) | 2011-07-28 | 2011-07-28 | Positively charged single layer type electrophotographic photosensitive member and image forming apparatus |
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| CN102902171B true CN102902171B (en) | 2017-05-03 |
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|---|---|---|---|---|
| JPH07244390A (en) * | 1994-03-03 | 1995-09-19 | Fuji Electric Co Ltd | Electrophotographic photoreceptor |
| CN101021695A (en) * | 2006-02-16 | 2007-08-22 | 三星电子株式会社 | Electrophotographic photoreceptor and electrophotographic imaging apparatus employing the photoreceptor |
| WO2008153105A1 (en) * | 2007-06-12 | 2008-12-18 | Mitsubishi Chemical Corporation | Image-forming apparatus and cartridge |
| EP2078988A3 (en) * | 2008-01-10 | 2009-12-09 | Ricoh Company, Ltd. | Image forming apparatus and image forming method |
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|---|---|---|---|---|
| JPH0683249A (en) * | 1992-09-01 | 1994-03-25 | Canon Inc | Image forming device |
| JPH11344816A (en) * | 1998-06-02 | 1999-12-14 | Fuji Electric Co Ltd | Electrophotographic photoreceptor |
| JP4010739B2 (en) * | 2000-04-19 | 2007-11-21 | 三菱化学株式会社 | Electrophotographic photosensitive member and electrophotographic method |
| JP3638500B2 (en) * | 2000-04-26 | 2005-04-13 | 京セラミタ株式会社 | Single layer type electrophotographic photosensitive member and image forming apparatus using the same |
| JP2003295487A (en) * | 2002-03-29 | 2003-10-15 | Kyocera Mita Corp | Method for forming image by using positive charge type organic photoreceptor |
| JP5062997B2 (en) * | 2005-12-27 | 2012-10-31 | 京セラドキュメントソリューションズ株式会社 | Image forming apparatus and image forming method |
| US7879519B2 (en) * | 2007-02-15 | 2011-02-01 | Ricoh Company Limited | Image bearing member and image forming apparatus using the same |
| JP5477683B2 (en) * | 2008-12-11 | 2014-04-23 | 株式会社リコー | Electrophotographic photosensitive member, method for producing the same, and image forming apparatus |
| JP5266037B2 (en) * | 2008-12-24 | 2013-08-21 | 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 and image forming apparatus |
| US20100233602A1 (en) * | 2009-03-11 | 2010-09-16 | Ricoh Company, Ltd. | Electrophotographic Photoconductor |
-
2011
- 2011-07-28 JP JP2011166039A patent/JP5538323B2/en not_active Expired - Fee Related
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2012
- 2012-07-24 CN CN201210258142.9A patent/CN102902171B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07244390A (en) * | 1994-03-03 | 1995-09-19 | Fuji Electric Co Ltd | Electrophotographic photoreceptor |
| CN101021695A (en) * | 2006-02-16 | 2007-08-22 | 三星电子株式会社 | Electrophotographic photoreceptor and electrophotographic imaging apparatus employing the photoreceptor |
| WO2008153105A1 (en) * | 2007-06-12 | 2008-12-18 | Mitsubishi Chemical Corporation | Image-forming apparatus and cartridge |
| EP2078988A3 (en) * | 2008-01-10 | 2009-12-09 | Ricoh Company, Ltd. | Image forming apparatus and image forming method |
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| JP2013029688A (en) | 2013-02-07 |
| JP5538323B2 (en) | 2014-07-02 |
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