CN101520614A - Single-layer electrophotograph photoreceptor and image forming apparatus - Google Patents
Single-layer electrophotograph photoreceptor and image forming apparatus Download PDFInfo
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- CN101520614A CN101520614A CN200810180761A CN200810180761A CN101520614A CN 101520614 A CN101520614 A CN 101520614A CN 200810180761 A CN200810180761 A CN 200810180761A CN 200810180761 A CN200810180761 A CN 200810180761A CN 101520614 A CN101520614 A CN 101520614A
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Abstract
The present invention provides a single-layer electrophotograph photoreceptor and an image forming apparatus, which can effectively inhibit film forming and black dots in image formed thereby, when forming images in any use environment, therefore the excellent charge transmitting capacity of hydyne compound with specific structure can be efficiently exerted, and the photosensibility property can be stably retained. The hole-transporting agent is the hydyne compound represented by the formula (1), and the electronic transporting agent has a solubility (measuring temperature 25 DEG C) within 27 to 50% by weight, relative to tetrahydrofuran. In the formula (1), R<1> and R<2> are independent substituents, being hydrogen atom, alkyl having 1 to 6 carbon atoms, and the like, A<1> is methyl, phenyl and the like.
Description
Technical field
The present invention relates to mono-layer electronic photographic photoreceptor and image processing system, particularly under any environment for use, can both effectively suppress the generation of the lip-deep film forming of photographic layer and the formation image that causes thus in the mono-layer electronic photographic photoreceptor and the image processing system of generation of stain.
Background technology
Use at present the Organophotoreceptor that constitutes by binding resin, charge generating and charge transport agent etc. as the Electrophtography photosensor that is used for image processing system etc.Above-mentioned Organophotoreceptor is compared with inorganic photoreceptor in the past, and when making easily, the options of photoreceptor material is varied, so have the big advantage of the degree of freedom of structural design.
On the other hand, when stably forming high quality image, the organic material that is used for Organophotoreceptor requires to satisfy various conditions.
Particularly, the charge transport agent require to satisfy (i) to light and thermally stable, (ii) stable to the ozone that produces by corona discharge etc., (iii) have strong charge delivery capability, (iv) with the intermiscibility height of organic solvent and binding resin and (various conditions such as v) easy to manufacture and cheapness.
So, a kind of Electrophtography photosensor is disclosed, described Electrophtography photosensor has used the charge transport agent (for example patent documentation 1) of being satisfied so various conditions, particularly charge delivery capability excellence by the hydrazone compound conduct of following general formula (23) expression.
In the general formula (23), R
13And R
14Be low alkyl group, lower alkoxy, two elementary alkyl amido, A
2For methyl, phenyl, by the group of following formula (24) expression.
In the general formula (24), R
15Be low alkyl group, lower alkoxy.
Patent documentation 1: No. 1619157, Jap.P. (claims)
But the Electrophtography photosensor of patent documentation 1 does not carry out any consideration to hydrazone compound and the associativity between the electron transporting agent with ad hoc structure.Consequently, when constituting mono-layer electronic photographic photoreceptor, found significantly to reduce the problem of light sensitivity characteristic according to the kind of the electron transporting agent that is used in combination.
And then when the Electrophtography photosensor of patent documentation 1 constituted mono-layer electronic photographic photoreceptor, the character of surface of photographic layer reduced easily, when particularly forming image under hot and humid condition, had found the tendency in the easy film forming in the surface of photographic layer.Consequently, found to form the problem that is easy to generate stain in the image.
Thereby, require a kind of generation of the stain that can suppress film forming and cause thus, and then the mono-layer electronic photographic photoreceptor of the charge delivery capability of the excellence that can more effectively bring into play hydrazone compound and had.
Summary of the invention
So, the inventor finds: in mono-layer electronic photographic photoreceptor, the hydrazone compound that has ad hoc structure by use is as the cavity conveying agent time, make electron transporting agent to the solubleness of regulation solvent within specialized range, can improve the character of surface of photographic layer effectively.
Consequently, even when having found under any environment for use to form image, can both effectively suppress the generation of the lip-deep film forming of photographic layer and the formation image that causes thus in the generation of stain, and then also can stably keep the light sensitivity characteristic.
Promptly, even the object of the present invention is to provide the generation of the stain in the formation image that under any environment for use, can both effectively suppress the generation of the lip-deep film forming of photographic layer and cause thus, and then performance has the charge delivery capability of excellence of the hydrazone compound of ad hoc structure effectively, can stably keep the mono-layer electronic photographic photoreceptor and the image processing system of light sensitivity characteristic.
According to the present invention, provide a kind of mono-layer electronic photographic photoreceptor to address the above problem, it has photographic layer on matrix, this photographic layer contains charge generating, cavity conveying agent, electron transporting agent and binding resin in one deck, it is characterized in that, the cavity conveying agent is the hydrazone compound by following general formula (1) expression, and electron transporting agent has value in 27～50 weight % scopes with respect to the solubleness of tetrahydrofuran under measuring 25 ℃ of temperature.
In the general formula (1), R
1And R
2For the difference independent substituent, be the alkyl of hydrogen atom, carbon number 1～6, the alkoxy or the dialkyl amido of carbon number 1～6, the alkyl in the dialkyl amido is the alkyl of carbon number 1～6, A
1Be methyl, phenyl or benzyl, benzyl is by a kind of alkyl of carbon number 1～6 or the benzyl that a kind of alkoxy replaced of carbon number 1～6.
That is, use hydrazone compound the time as the cavity conveying agent with ad hoc structure, electron transporting agent to the solubleness of regulation solvent within specialized range, thereby can improve the dispersiveness of the hydrazone compound in the photographic layer effectively with ad hoc structure.
More particularly, electron transporting agent with regulation solubleness according to and have a special interaction between the hydrazone compound of ad hoc structure, bring into play the function of the dispersing aid of above-claimed cpd, can improve the dispersiveness of the hydrazone compound in the photographic layer effectively with ad hoc structure.
Consequently, can improve the character of surface of photographic layer effectively, so even under any environment for use, can both effectively suppress the generation of the lip-deep film forming of photographic layer and the formation image that causes thus in the generation of stain.
And, by improving the dispersiveness of the charge transport agent in the photographic layer, can effectively bring into play the cavity conveying ability of the excellence that specific hydrazone compound had originally, the characteristic of ozone resistance, can keep excellent light sensitivity characteristic effectively.
In addition, the electron transporting agent dosage of electron transport to greatest extent (g) that is shown under 25 ℃ of conditions, can dissolves with respect to tetrahydrofuran 100g with respect to the solubility table of tetrahydrofuran.
And, when constituting mono-layer electronic photographic photoreceptor of the present invention, preferably on following matrix, form the resin molding that contains by the hydrazone compound of general formula (1) expression, when impregnated in olein under the following conditions, be value in 1～10mg scope with respect to the elution amount of olein by the hydrazone compound of general formula (1) expression.
Resin molding is formed: relative polycarbonate resin 100 weight portions, the hydrazone compound of being represented by general formula (1) is 80 weight portions
Thick resin film: 30 μ m
Matrix external diameter: 30mm
Matrix length (steeping length): 40mm
Olein amount: 30g
Temperature: 25 ℃
Time: 20 hours
By such formation, can further improve the dispersiveness that the hydrazone compound with ad hoc structure in the photographic layer self is had.
And when constituting mono-layer electronic photographic photoreceptor of the present invention, the preferred electron agent delivery is for being selected from least a by in the compound of following general formula (2)～(4) expression:
In the general formula (2), R
3Be the aryl of the carbon number 6～30 of the alkyl of the carbon number 1～6 of halogen atom, replacement or non-replacement or replacement or non-replacement, R
4For replacing or the aryl of the carbon number 6～30 of alkyl, replacement or the non-replacement of the carbon number 1～6 of non-replacement or by-O-R
5The group of expression, wherein, R
5The aralkyl of the aryl of the carbon number 6～30 of alkyl, replacement or the non-replacement of the carbon number 1～6 of expression replacement or non-replacement or the carbon number 7～30 of replacement or non-replacement.
In the general formula (3), R
6And R
7Be the difference independent substituent, the alkyl of the carbon number 1～6 of expression replacement or non-replacement.
In the general formula (4), R
8～R
12Be the difference independent substituent, the alkyl of the carbon number 1～8 of expression hydrogen atom, halogen atom or replacement or non-replacement.
By such formation, not only can easily the solubleness of electron transporting agent to the regulation solvent be adjusted within the specialized range, can also more effectively bring into play and have the special interaction between the hydrazone compound of ad hoc structure.
And when constituting mono-layer electronic photographic photoreceptor of the present invention, relative binding resin 100 weight portions, the content of preferred electron agent delivery are the values in 10～70 weight portion scopes.
By such formation, not only can more effectively bring into play and have the special interaction between the hydrazone compound of ad hoc structure, and can improve the electron transport efficient in the photographic layer, also can further improve the light sensitivity characteristic of Electrophtography photosensor.
And when constituting mono-layer electronic photographic photoreceptor of the present invention, the external diameter of preferred substrate is the value in 10～25mm scope.
By such formation, can help the miniaturization of image processing system, simultaneously also can effectively suppress the lip-deep film forming of photographic layer and the formation image that causes thus in the generation of stain.
Another aspect of the invention is a kind of image processing system, it disposes live part, developing parts and transfer member around Electrophtography photosensor, it is characterized in that described Electrophtography photosensor is a mono-layer electronic photographic photoreceptor of the present invention.
Promptly, be equipped with the specific mono-layer electronic photographic photoreceptor of the character of surface excellence of photographic layer as Electrophtography photosensor, therefore under any environment for use, can effectively suppress the generation of the lip-deep film forming of photographic layer and the formation image that causes thus in the generation of stain.
And, because the excellent dispersion of the charge transport agent in the photographic layer, so can keep excellent light sensitivity characteristic effectively.
And when constituting image processing system of the present invention, preferred developing parts is for adopting the parts of cleaning mode simultaneously that develop.
By such formation, can help the miniaturization and the simplification of image processing system, simultaneously also can effectively suppress the lip-deep film forming of photographic layer and the formation image that causes thus in the generation of stain.
In addition, said here developing parts represents to use the developing apparatus of developer roll to the electrostatic latent image adhering toner that forms on the Electrophtography photosensor.
And the cleaning mode that develops is simultaneously represented above-mentioned developer roll when being formed on the electrostatic latent image adhering toner on the Electrophtography photosensor, and the residue toner is recovered to mode in the developing apparatus.
And when constituting image processing system of the present invention, preferred live part, developing parts contact with Electrophtography photosensor with at least one parts in the transfer member.
By such formation, can be easy to generate the lip-deep film forming of photographic layer usually, but if the present invention owing to be equipped with specific mono-layer electronic photographic photoreceptor, therefore can effectively suppress film forming and the formation image that causes thus in the generation of stain.
Description of drawings
Fig. 1 (a)～(b) is for being used to illustrate the figure of mono-layer electronic photographic photoreceptor structure of the present invention;
Fig. 2 is used to illustrate that the solubleness of electron transporting agent and stain produce the figure that concerns between the number;
Fig. 3 is used to illustrate that stain produces the figure that concerns between number and the elution amount from the cavity conveying agent of photographic layer;
Fig. 4 is used to illustrate that the content of electron transporting agent and stain produce the figure that concerns between the number;
Fig. 5 is the figure that is used to illustrate image processing system structure of the present invention.
Symbol description
10: mono-layer electronic photographic photoreceptor
12: matrix
14: photographic layer
16: the middle layer
30: compounding machine
31: image formation unit
31a: image forming part
31b: sheet feed section
32: the paper delivery unit
33: image fetching unit
33a: light source
33b: optical element
34: the original copy supply unit
34a: original copy is placed pallet
34b: original copy conveying mechanism
34c: original copy output pallet
41: photosensitive drums
42: charged device
43: exposure source
44: developer
45: transfer roll
Embodiment
[first embodiment]
First embodiment of the present invention is a kind of mono-layer electronic photographic photoreceptor, this mono-layer electronic photographic photoreceptor has photographic layer on matrix, this photographic layer contains charge generating, cavity conveying agent, electron transporting agent and binding resin in one deck, it is characterized in that, the cavity conveying agent is the hydrazone compound by general formula (1) expression, and electron transporting agent has the value in 27～50 weight % scopes with respect to the solubleness (mensuration temperature: 25 ℃) of tetrahydrofuran.
Below to the mono-layer electronic photographic photoreceptor of first embodiment, specify each constitutive requirements.
1, basic comprising
Shown in Fig. 1 (a), mono-layer electronic photographic photoreceptor 10 of the present invention is provided with single photographic layer 14 on matrix 12.
And above-mentioned photographic layer is characterised in that, contains the hydrazone compound as the cavity conveying agent time with ad hoc structure, contains the compound of solubleness in specialized range at the regulation solvent as electron transporting agent.
And, mono-layer electronic photographic photoreceptor of the present invention also can for the mono-layer electronic photographic photoreceptor 10 shown in Fig. 1 (b) ', in the scope of not damaging the photoreceptor characteristic, between matrix 12 and photographic layer 14, be formed with middle layer 16.
And matrix can use the various materials with electric conductivity, can enumerate for example metals such as iron, aluminium, copper, tin, platinum, silver, vanadium, molybdenum, chromium, cadmium, titanium, nickel, palladium, indium, stainless steel, brass; Evaporation or lamination the plastic material of above-mentioned metal; Glass with coverings such as silver iodide, tin oxide, indium oxides; Or electrically conductive microparticle such as disperse black carbon and plastic material of forming etc.
And the shape of matrix can be any one shapes such as sheet, drum type according to the structure of the image processing system that uses, and has electric conductivity as long as matrix self has the surface of electric conductivity or matrix.
And, matrix be shaped as drum type the time, preferably its external diameter is the value in 10～25mm scope.
Its reason is, the external diameter by making matrix can help the miniaturization of image processing system in above-mentioned scope, also can effectively suppress the lip-deep film forming of photographic layer simultaneously and the formation image that causes thus in the generation of stain.
In addition, though also can effectively suppress the reason that the lip-deep film forming of photographic layer produces, in one of the photographic layer of back, describe in detail for the external diameter of matrix is less relatively.
2, photographic layer
(1) cavity conveying agent
(1)-a kind
Mono-layer electronic photographic photoreceptor of the present invention is characterised in that, uses the hydrazone compound of being represented by above-mentioned general formula (1) as the cavity conveying agent.
Its reason is, if specific hydrazone compound had excellent cavity conveying ability and ozone resistance originally, what can improve Electrophtography photosensor effectively is the electrology characteristic of representative with the light sensitivity characteristic.
But, find the above-mentioned electron transporting agent of hydrazone compound by being used in combination with ad hoc structure, the light sensitivity characteristic can significantly reduce, or the character of surface of photographic layer can significantly reduce, thus the situation of the film forming of being easy to generate and the stain that causes thus.
For this point, as hereinafter described, by using the compound of solubleness in specialized range to the regulation solvent, can effectively solve the problem that stain that above-mentioned light sensitivity characteristic and film forming cause produces among the present invention as electron transporting agent.
Above-mentioned effect is considered to by the hydrazone compound with ad hoc structure and has interaction special between the electron transporting agent of regulation solubleness obtain, and describes in one of the electron transporting agent of back for concrete effect.
(1)-2 concrete example
Can enumerate compound (HTM-1～4) by the concrete example of the hydrazone compound of general formula (1) expression by following formula (5)～(8) expression.
(1)-3 synthesis example
As the synthesis example of hydrazone compound, the synthetic method by the compound (HTM-2) of above-mentioned formula (6) expression is described with ad hoc structure.
That is, by Wei Lusi Mel (Vilsmeier-Haack) reaction pair N, the amino meta-aminotoluene of N-two (4-benzyl) carries out formylation, synthetic compound by following formula (9) expression.Then, use ethanol to carry out crystallization again to the compound by formula (9) expression of separating out, and purify.
Then, with compound and the N after purifying by formula (9) expression, the N-hydrazo-benzene with etc. mole join in the ethanol, about 2 hours of reflux is separated out the yellow-white powder comprehensively.Then, filter and take out the yellow-white powder of separating out, further use ethanol to carry out crystallization again, then can obtain compound (HTM-2) with 90～96% yield by formula (6) expression.
(1)-4 elution amount
On matrix, form the resin molding contain by the hydrazone compound of general formula (1) expression, and when impregnated in olein under the following conditions, be preferably value in 1～10mg scope with respect to the elution amount of olein by the hydrazone compound of general formula (1) expression.
Resin molding is formed: relative polycarbonate resin 100 weight portions, the hydrazone compound of being represented by general formula (1) is 80 weight portions
Thick resin film: 30 μ m
Matrix external diameter: 30mm
Matrix length (steeping length): 40mm
Olein amount: 30g
Temperature: 25 ℃
Time: 20 hours
Its reason is, is above-mentioned scope by the elution amount that makes the hydrazone compound that has ad hoc structure under the rated condition, can further improve the dispersiveness that the hydrazone compound with ad hoc structure in the photographic layer self is had.
That is, be the value of not enough 1mg because if having the elution amount of the hydrazone compound of ad hoc structure, then the intermiscibility to organic material is low excessively, may be difficult to fully disperse in photographic layer.On the other hand, if the elution amount of hydrazone compound with ad hoc structure is for surpassing the value of 10mg, then because dispersed insufficient in photographic layer can be judged as from the photographic layer surface easily by the olein elution.
Thereby, have elution the amount more preferably value in 3～7mg scope, the more preferably value in 4～6mg scope of the hydrazone compound of ad hoc structure under the rated condition.
(1)-5 content
For the content of the hydrazone compound with ad hoc structure, relative binding resin 100 weight portions of photographic layer are preferably the value in the scope of 20～120 weight portions.
Its reason is, is the value of less than 20 weight portions if having the content of the hydrazone compound of ad hoc structure, and then Electrophtography photosensor may be difficult to obtain sufficient light sensitivity characteristic.On the other hand, be value, even, also may be difficult in photographic layer, fully disperse then also with having the electron transporting agent of predetermined characteristic above 120 weight portions if having the content of the hydrazone compound of ad hoc structure.
Thereby, for the content of hydrazone compound with ad hoc structure, binding resin 100 weight portions in the relative photographic layer, the more preferably value in the scope of 30～100 weight portions, the more preferably value in the scope of 50～100 weight portions.
(2) electron transporting agent
(2)-1 solubleness
Mono-layer electronic photographic photoreceptor of the present invention is characterised in that electron transporting agent has the interior value of scope of 27～50 weight % with respect to the solubleness (mensuration temperature: 25 ℃) of tetrahydrofuran.
Its reason is, uses the hydrazone compound with ad hoc structure as the cavity conveying agent time, electron transporting agent to the solubleness of regulation solvent within specialized range, thereby can improve the dispersiveness of the hydrazone compound in the photographic layer effectively with ad hoc structure.
Promptly, electron transporting agent with regulation solubleness by and have a special interaction between the hydrazone compound of ad hoc structure, bring into play the function of the dispersing aid of above-claimed cpd, can improve the dispersiveness of the hydrazone compound in the photographic layer effectively with ad hoc structure.
Consequently, can improve the character of surface of photographic layer effectively, so even under any environment for use, can both effectively suppress the generation of the lip-deep film forming of photographic layer and the formation image that causes thus in the generation of stain.
And, by improving the dispersiveness of the charge transport agent in the photographic layer, can effectively bring into play the cavity conveying ability of the excellence that specific hydrazone compound had originally, the characteristic of ozone resistance, can keep excellent light sensitivity characteristic effectively.
More particularly, because if electron transporting agent is the value of less than 27 weight % with respect to the solubleness of tetrahydrofuran, then be difficult to give full play to and have special interaction between the hydrazone compound of ad hoc structure, may be difficult to suppress film forming and the generation of the stain that causes thus.On the other hand, if electron transporting agent is the value above 50 weight % with respect to the solubleness of tetrahydrofuran, though then can improve the dispersiveness of hydrazone compound, may be difficult to guarantee the electron mobility stipulated, or the mechanicalness intensity of photographic layer be low excessively with ad hoc structure.
Thereby electron transporting agent is with respect to the solubleness of the tetrahydrofuran more preferably value in the scope of 27～40 weight %, the more preferably value in the scope of 27～35 weight %.
In addition, the electron transporting agent dosage of electron transport to greatest extent (g) that is shown under 25 ℃ of conditions, can dissolves with respect to tetrahydrofuran 100g with respect to the solubility table of tetrahydrofuran.
Then, use Fig. 2 that solubleness and the kind of cavity conveying agent and the relation stain generation number in formation image between of electron transporting agent with respect to tetrahydrofuran is described.
That is, Fig. 2 represents that transverse axis adopts the solubleness (weight %) of electron transporting agent with respect to tetrahydrofuran, and the longitudinal axis adopts the stain that forms in the image to produce the family curve of number (individual/A4 paper).
At this, family curve A for the cavity conveying agent use as by the hydrazone compound of general formula (1) expression by the compound (HTM-1) of formula (5) expression the time family curve, family curve B for the cavity conveying agent use as by the compound beyond the hydrazone compound of general formula (1) expression by the compound (HTM-5) of following formula (10) expression the time family curve.
In addition, relative binding resin 100 weight portions of the content of cavity conveying agent are 50 weight portions, and relative binding resin 100 weight portions of the content of electron transporting agent are 30 weight portions.
In addition, put down in writing in the embodiment of back for the details of the structure of Electrophtography photosensor, the condition determination that stain produces number etc.
At first, from family curve A as can be known, when the cavity conveying agent was used by the hydrazone compound of general formula (1) expression, along with the increase of the solubleness of electron transporting agent, stain produces number sharply to be reduced.
More specifically, the solubleness along with electron transporting agent is increased to 27 weight % from 20 weight % as can be known, and stain produces number at least from sharply reducing to the value about 50/A4 paper more than the 300/A4 paper.And the scope of the solubleness of electron transporting agent more than 27 weight % can make stain produce number and stably remain on about 50/A4 paper as can be known.
On the other hand, from family curve B as can be known, when the cavity conveying agent is used by the compound beyond the hydrazone compound of general formula (1) expression,, produce the also not special influence of number for stain even change the solubleness of electron transporting agent.
More particularly, no matter the solubleness of electron transporting agent how as can be known, stain produces number all can reach scope about 200/A4 paper, can't effectively suppress stain and produce number.
Thereby, from family curve A and B as can be known, when being used in combination hydrazone compound and having the electron transporting agent of regulation solubleness, compare with the situation of using combination in addition with ad hoc structure, the interaction of performance nonanticipating can suppress the generation of stain effectively.
Then, the relation between the character of surface of generation of using Fig. 3 to illustrate to form the stain in the image and photographic layer.
Here, use elution amount as the index of the character of surface of photographic layer from the cavity conveying agent of photographic layer with respect to olein.
This is because many more with respect to the elution amount from the cavity conveying agent of photographic layer of olein, the cavity conveying agent that is illustrated in the photographic layer surface disperses inhomogeneously more, and then the character of surface of expression photographic layer is inhomogeneous.
And then because, in fact by the cavity conveying agent from the surface of photographic layer by elution, represent that further the character of surface of photographic layer reduces easily.
That is, Fig. 3 represents that the stain that transverse axis adopt to form in the image produces number (individual/A4 paper), and the longitudinal axis adopts the family curve from the elution amount (mg) of the cavity conveying agent of photographic layer with respect to olein.
From this family curve as can be known, the increase that produces number along with stain increases with respect to the elution amount from the cavity conveying agent of photographic layer of olein.
The generation of the stain in this expression formation image and the character of surface of photographic layer are closely related.
Thereby, have the hydrazone compound of ad hoc structure as can be known and have special interaction between the electron transporting agent of regulation solubleness, has the effect that improves the photographic layer character of surface effectively, the result of above-mentioned effect is, can suppress the lip-deep film forming of photographic layer, and then suppress to form the generation of the stain in the image.
(2)-2 kind
Kind with electron transporting agent of regulation solubleness is not done special restriction, can use known various electron transport compounds at present, but can enumerate the compound of being represented by above-mentioned general formula (2)～(4) as particularly preferred electron transporting agent.
Its reason is, if have the electron transporting agent of these structures, then not only can easily the solubleness of electron transporting agent to the regulation solvent be adjusted within the specialized range, can also more effectively bring into play and have the special interaction between the hydrazone compound of ad hoc structure.
(2)-3 concrete example
As the concrete example of the compound of representing by general formula (2)～(4), can enumerate compound (ETM-1～3) respectively by following formula (11)～(13) expression.
(2)-4 content
For the content of electron transporting agent, binding resin 100 weight portions are preferably the interior value of scope of 10～70 weight portions relatively.
Its reason is, by the content that makes electron transporting agent is above-mentioned scope, not only can more effectively bring into play and have the special interaction between the hydrazone compound of ad hoc structure, and can improve electron transport efficient in the photographic layer, also can improve the light sensitivity characteristic of Electrophtography photosensor.
That is, because if the content of electron transporting agent is the value of less than 10 weight portions, then not only is difficult to give full play to and has special interaction between the hydrazone compound of ad hoc structure, and may excessively reduce electron transport efficient.On the other hand, if the content of electron transporting agent is for surpassing the value of 70 weight portions, then the content of electron transporting agent becomes too much, and electron transporting agent self may become the main cause of the dispersiveness that reduces the hydrazone compound with ad hoc structure.
Thereby the content of the electron transporting agent of relative binding resin 100 weight portions is the interior value of scope of 20～60 weight portions more preferably, further the value in the scope of preferred 20～50 weight portions.
Then, use Fig. 4 illustrates the relation between the content of electron transporting agent and the stain generation number in the formation image.
That is, Fig. 4 represents that transverse axis adopts the content (weight portion) of the electron transporting agent of relative binding resin 100 weight portions, and the longitudinal axis adopts the stain that forms in the image to produce the family curve of number (individual/A4 paper).
At this, family curve A be electron transporting agent use as the compound with regulation solubleness by the compound (ETM-2) of formula (12) expression the time family curve, family curve B be electron transporting agent use as the electron transporting agent that does not have regulation solubleness by the compound (ETM-4) of following formula (14) expression the time family curve.
In addition, relative binding resin 100 weight portions, contain 50 weight portions by the hydrazone compound of general formula (1) expression as the cavity conveying agent.
In addition, for the details of the structure of Electrophtography photosensor, the condition determination that stain produces number etc., in the embodiment of back, put down in writing.
At first, from family curve A as can be known, electron transporting agent is used when having the compound of regulation solubleness, even change the content of electron transporting agent significantly, also stain can be produced the number that number stably is suppressed at 50/A4 of less than paper.
In addition, though in the family curve of Fig. 4, only change the content of electron transporting agent under the value in the scope of 20～40 weight portions, even but when confirming in addition to change the content of electron transporting agent under the value in the scope of 10～70 weight portions, also stain can be produced the number that number stably is suppressed at 50/A4 of less than paper.
On the other hand, from family curve B as can be known, electron transporting agent is used when not having the compound of regulation solubleness, even change the content of electron transporting agent, stain is produced number also do not produce big influence.
More particularly, as can be known along with the content of electron transporting agent increases, stain produce number only the utmost point increase lentamente, fully can't efficiency confirmed ground reduces the effect that stain produces number.
Thereby, by family curve A and family curve B as can be known, at hydrazone compound with have the interaction of performance nonanticipating between the electron transporting agent of regulation solubleness with ad hoc structure, and be the value in the scope of 10～70 weight portions by the content that makes electron transporting agent, can more effectively bring into play above-mentioned interaction with regulation solubleness.
(3) charge generating
(3)-a kind
Employed charge generating can be used present known charge generating in the Electrophtography photosensor of the present invention.
Can enumerate for example phthualocyanine pigment, the perylene series pigments, disazo pigment, diketopyrrolo-pyrrole pigment, no metal naphthalene phthalocyanine pigment, metal naphthalene phthalocyanine pigment, side's acid color (squarainepigment), trisazo pigment, indigo pigment, azulenes pigment (azulenium pigment), phthalocyanine pigments, pyrans pigment, anthanthrone pigment, the triphenylmethane series pigments, intellectual circle's pigment, the toluidine series pigments, the pyrazoline series pigments, the organic light-guide electricity body that quinacridone pigment is such; Independent one or more the potpourri of inorganic smooth conductive agent that selenium, selenium-tellurium, selenium-arsenic, cadmium sulfide, amorphous silicon are such etc.
(3)-2 concrete example
And, specifically more preferably use among these charge generating by the phthualocyanine pigment of following formula (15)～(18) expressions (CGM-A～D).
(3)-3 content
For the content of charge generating, binding resin 100 weight portions are preferably the interior value of scope of 0.2～40 weight portion relatively.
Its reason is, if the content of charge generating is the value of less than 0.2 weight portion, the effect that then improves quantum yield is insufficient, can't improve light sensitivity characteristic, electrology characteristic, stability of Electrophtography photosensor etc.On the other hand, if the content of charge generating is for surpassing the value of 40 weight portions, then to the red area in visible light, near infrared region or have the increase effect of absorptivity of light of wavelength at region of ultra-red insufficient, possibly can't improve light sensitivity characteristic, electrology characteristic and the stability etc. of photoreceptor.
Thereby the content of charge generating is the interior value of scope of 0.5～20 weight portion more preferably.
(4) adjuvant
In the photographic layer except that above-mentioned each composition, can not bring within the dysgenic scope to the electrofax characteristic, can cooperate known various adjuvants, for example anti-deterioration agent, softening agent, plastifier, surface modifier, extender, tackifier, dispersion stabilizer, wax, acceptor, donors etc. such as antioxidant, free radical scavenger, singlet quenching medium (single quencher), ultraviolet light absorber at present.And,, also can and use for example known sensitizers such as terphenyl, naphthalene halide quinones, acenaphthene with charge generating in order to improve the light sensitivity of photographic layer.
(5) binding resin
Binding resin can be enumerated for example styrenic, Styrene-Butadiene, styrene-acrylonitrile copolymer, styrene-maleic acid copolymer, acrylic acid series polymeric compounds, styrene-propene acid based copolymer, tygon, ethylene-vinyl acetate copolymer, haloflex, Polyvinylchloride, vinyl chloride-vinyl acetate copolymer, polyester, alkyd resin, polyamide, polyurethane, polycarbonate, polyarylate, polysulfones, diallyl phthalate, ketone resin, thermoplastic resin such as polyvinyl butyral resin and polyether resin; Silicone resin, epoxy resin, phenolics, carbamide resin, melamine resin and other bridging property thermoset resins; And then also have light-cured resins such as epoxy acrylate and polyurethane-acrylate etc.These binding resins can use separately, can also merge two or more uses.
And binding resin preferably includes the hydrophobicity polycarbonate.
Its reason is, if the hydrophobicity polycarbonate, the character of surface of then regulating photographic layer easily can more effectively suppress the generation of the lip-deep film forming of photographic layer.
In addition, also preferred above-mentioned hydrophobicity polycarbonate resin is so that it contains proportional gradient mode with increase and is comprised in the photographic layer at the photographic layer near surface.
Its reason is, even more a spot of hydrophobicity polycarbonate resin also can suppress the generation of film forming effectively.
And above-mentioned hydrophobicity polycarbonate resin preferably includes the polycarbonate resin with siloxane structure.
Its reason is if having the polycarbonate resin of siloxane structure, then can more easily regulate the character of surface of photographic layer.
That is, because the siloxane structure part can be brought into play excellent hydrophobicity.
(6) thickness
The thickness of photographic layer is preferably the value in 5～100 mu m ranges.
Its reason is if the thickness of photographic layer is the value of less than 5 μ m, then to be difficult to evenly form photographic layer sometimes, or to reduce physical strength.On the other hand, if the thickness of photographic layer is for surpassing the value of 100 μ m, then photographic layer is peeled off from matrix easily sometimes.
Thereby the thickness of photographic layer is the interior value of 10～50 mu m ranges more preferably, more preferably the value in 15～45 mu m ranges.
(7) manufacture method
The manufacture method of Electrophtography photosensor is not particularly limited, can be by implementing as following step.
At first, charge generating, charge transport agent, binding resin, adjuvant etc. are contained in solvent, prepare coating fluid.Using the coating fluid that obtains so for example, rubbing methods such as dip coating, spraying process, drop rubbing method (bead coating), knife coating, rolling method are applied on the conductive substrate (aluminum pipe base).
Afterwards, under for example 100 ℃, 40 minutes condition, carry out heated-air drying, thereby can obtain having the mono-layer electronic photographic photoreceptor of regulation thickness photographic layer.
In addition, the solvent of making coating fluid can use various organic solvents, can enumerate for example alcohols such as methyl alcohol, ethanol, isopropyl alcohol, butanols; Aliphatic hydrocarbons such as normal hexane, octane, cyclohexane; Aromatic hydrocarbons such as benzene,toluene,xylene; Halogenated hydrocarbons such as methylene chloride, ethylene dichloride, methenyl choloride, phenixin, chlorobenzene; Dimethyl ether, diethyl ether, tetrahydrofuran, glycol dimethyl ether, diethylene glycol dimethyl ether, 1,3-two oxa-s penta ring, 1, ethers such as 4-diox; Ketones such as acetone, butanone, cyclohexanone; Ester such as ethyl acetate, methyl acetate class; Dimethylformaldehyde, dimethyl formamide, dimethyl sulfoxide etc.These solvents use separately or mix two or more uses.At this moment, good for the flatness on the dispersiveness that makes charge generating, photographic layer surface, also can further contain surfactant, levelling agent etc.
And, before forming this photographic layer, also preferably on matrix, form the middle layer in advance.
When forming this middle layer, for example adopt roller mill, bowl mill, vertical ball mill, coating vibrator, ultrasonic dispersing machine etc. to carry out dispersing and mixing with suitable dispersion medium according to known method the adjuvant (organic fine powder or inorganic fine powder) of binding resin and interpolation as required, the modulation coating fluid, for example knife coating, infusion process, spray-on process are coated with by known approaches with this coating fluid, implement thermal treatment afterwards, form the middle layer.
And, about adjuvant, in the scope that does not produce the problems such as sedimentation when making, prevent to cause light scattering and produce interference fringe etc., can add various adjuvants (organic fine powder or inorganic fine powder) on a small quantity.
Then, can be coated with according to known manufacture method, for example go up rubbing methods such as using dip coating, spraying process, drop rubbing method, knife coating, rolling method and be coated with in support substrate (aluminum pipe base) to the coating fluid that obtains.
Afterwards, the coating fluid on the matrix is carried out dry operation preferably under 20～200 ℃ of temperature, carry out in 5 minutes～2 hours the scope.
[second embodiment]
Second embodiment is a kind of image processing system, it has disposed live part around Electrophtography photosensor, developing parts and transfer member, it is characterized in that, Electrophtography photosensor is a mono-layer electronic photographic photoreceptor, this mono-layer electronic photographic photoreceptor has photographic layer on matrix, this photographic layer contains charge generating in one deck, the cavity conveying agent, electron transporting agent and binding resin, the cavity conveying agent is the hydrazone compound by general formula (1) expression, and electron transporting agent has the interior value of scope of 27～50 weight % with respect to the solubleness (mensuration temperature: 25 ℃) of tetrahydrofuran.
Below, be the center with the part that is different from first embodiment record content, the image processing system as second embodiment is described.
The image processing system of second embodiment can constitute compounding machine for example shown in Figure 5 30.Above-mentioned compounding machine 30 comprises image formation unit 31, paper delivery unit 32, image fetching unit 33 and original copy supply unit 34.And image formation unit 31 further comprises image forming part 31a and sheet feed section 31b.Then, in illustrated example, original copy supply unit 34 has original copy and places pallet 34a, original copy conveying mechanism 34b and original copy output pallet 34c, be placed on after original copy places original copy on the pallet 34a and deliver to image reading position P by original copy conveying mechanism 34b, be output to original copy output pallet 34c.
Like this, deliver to the stage that original copy reads position P, be used to light, read the image on the original copy from light source 33a at image fetching unit 33 at original copy.That is, use optical element 33b such as CCD, form the picture signal of the image on the corresponding original copy.
On the other hand, paper used for recording (be designated hereinafter simply as and the use paper) S that is contained in sheet feed section 31b is sent to image forming part 31a one by one.This image forming part 31a comprises the photosensitive drums 41 as image-carrier, and then the sense of rotation along photosensitive drums 41 disposes charged device 42, exposer 43, developer 44 and transfer roll 45 around this photosensitive drums 41.
Among these component parts, photosensitive drums 41 drives according to the rotation of the direction shown in the solid arrow among the figure, by charged device 42 its surperficial uniform chargeds.Afterwards,, implement exposure-processed, form electrostatic latent image on the surface of this photosensitive drums 41 by 43 pairs of photosensitive drums of exposer 41 according to above-mentioned picture signal.
According to this electrostatic latent image, develop by developer 44 adhering toner, form toner image on the surface of photosensitive drums 41.Then, this toner image as the transferred image transfer printing be transported to roll gap portion between photosensitive drums 41 and the transfer roll 45 with paper S on.Then, be transported to fixation unit 47 with paper S, carry out photographic fixing and handle what transferred image had carried out transfer printing.
In addition, photosensitive drums 41 is characterised in that, uses the Electrophtography photosensor of explanation in the first embodiment.
And, be sent to paper delivery unit 32 with paper S after the photographic fixing, when carrying out aftertreatment (for example bookbinding handle etc.), be sent to intermediate tray 32a with paper S and carry out aftertreatment afterwards.Afterwards, output to the output tray portion (not shown) that is arranged on the image processing system side with paper S.On the other hand, when not carrying out aftertreatment, output to the paper delivery pallet 32b that is arranged on intermediate tray 32a downside with paper S.In addition, intermediate tray 32a and paper delivery pallet 32b constitute so-called built-in paper delivery portion.
In addition, image processing system of the present invention comprises the Electrophtography photosensor of regulation, so even can both stably form the image of the distinctness of effective inhibition stain generation under any service condition, can keep excellent light sensitivity characteristic simultaneously effectively.
And the developing parts in the image processing system of the present invention is preferably the cleaning mode simultaneously that develops.
Its reason is, by adopting the cleaning mode simultaneously that develops, can help the miniaturization and the simplification of image processing system, can the generation of the stain in lip-deep film forming of photographic layer and the formation image that causes thus effectively be suppressed simultaneously.
That is, if the Electrophtography photosensor that uses among the present invention, its character of surface excellence then even therefore adopt the cleaning mode simultaneously that develops, also can suppress the generation of the generation of film forming and the stain that causes thus fully.
And at least one in preferred above-mentioned live part, developing parts and the transfer member contacts with Electrophtography photosensor.
Its reason is; when employing contacts the mode of Electrophtography photosensors with these parts; usually can be easy to generate the lip-deep film forming of photographic layer; but if the present invention; owing to be equipped with specific mono-layer electronic photographic photoreceptor, therefore can effectively suppress film forming and the formation image that causes thus in the generation of stain.
More particularly, preferably use transfer belt, use charged roller as live part as transfer member.
That is, when using transfer belt, charged roller, usually because oozing out of causing of transfer belt, charged roller more is easy to generate the lip-deep film forming of photographic layer.But then, if the present invention owing to be equipped with specific mono-layer electronic photographic photoreceptor, therefore can effectively suppress the generation of the stain in film forming and the formation that causes the thus image.
[embodiment]
Below, the present invention is described in detail based on embodiment.
[embodiment 1]
1, the manufacturing of mono-layer electronic photographic photoreceptor
Packing into as X type metal-free phthalocyanine (CGM-A) 4 weight portions by formula (15) expression of charge generating, as compound (HTM-1) 50 weight portions by formula (5) expression of cavity conveying agent, as compound (ETM-1) 30 weight portions by formula (11) expression of electron transporting agent, as the viscosity average molecular weigh of binding resin in container is 30,000 polycarbonate resin 100 weight portions and as tetrahydrofuran 800 weight portions of solvent.
Then, mix dispersion 50 hours, preparation photographic layer coating fluid with bowl mill.Then, go up the resulting coating fluid of coating with dip coating at the matrix (aluminum pipe base) of diameter 16mm, length 254mm, under 100 ℃, 40 minutes condition, carry out heated-air drying, obtain having the mono-layer electronic photographic photoreceptor of the single-layer type photographic layer of thickness 25 μ m.
2, the evaluation of mono-layer electronic photographic photoreceptor
(1) mensuration of the elution amount of cavity conveying agent
Mensuration is from the elution amount of the cavity conveying agent of photographic layer.
Promptly, the photographic layer coating fluid for preparing when mono-layer electronic photographic photoreceptor is made in coating on the matrix of external diameter 30mm, after forming the photographic layer of thickness 30 μ m, under 25 ℃ condition is that the mode of 40mm impregnated in the 30g olein 20 hours with this photographic layer with the steeping length with matrix, measures the cavity conveying dosage (mg) of this moment from the surperficial elution of photographic layer.
Mensuration about the cavity conveying dosage of above-mentioned elution, at first, in olein, dissolve the cavity conveying agent identical in advance to normal concentration with determination object, be determined at ultraviolet absorptance in the above-mentioned solution (wavelength: any two wavelength in 350～450nm scope), obtain the ratio between the concentration of absorptance and cavity conveying agent.
Then, the ultraviolet absorptance in the olein behind the mensuration dipping photographic layer calculates the cavity conveying dosage from the photographic layer elution.The result who obtains is illustrated in the table 1.
And, different with elution amount from the cavity conveying agent of photographic layer, prepare the resin molding that only contains the cavity conveying agent in the binding resin in addition, measured elution amount from the cavity conveying agent of above-mentioned resin molding.
Promptly, after the content that forms relative polycarbonate resin 100 weight portion cavity conveying agent on the matrix of external diameter 30mm is the resin molding of 80 weight portions, thickness 30 μ m, under 25 ℃ condition is that the mode of 40mm impregnated in the 30g olein 20 hours with this resin molding with the steeping length with matrix, measures the cavity conveying dosage (mg) of this moment from the surperficial elution of resin molding.
In addition, assay method uses and measures from the identical method of the cavity conveying dosage of photographic layer elution with above-mentioned.
(2) stain produces the mensuration of number
The mono-layer electronic photographic photoreceptor that obtains is installed in the printer (Kyocera Mita (strain) system, DP-560), under the environmental baseline of 40 ℃ of temperature, relative humidity 90%Rh, in A4 paper (the system high-quality PPC of Fuji-Xerox paper) 5,000 lettering rates of upward continuous printing is 6% original image.Afterwards, place printer after 6 hours, on A4 paper, print the blank sheet of paper original copy, when adding up the generation number of the stain that produces on this A4 paper, estimate according to following benchmark.The result who obtains is illustrated in the table 1.
◎: the stain on every A4 paper produces 50 of number less thaies.
Zero: the stain on every A4 paper produces 100 of several 50～less thaies.
*: the stain on every A4 paper produces several more than 100.
(3) mensuration of light sensitivity
Carried out mensuration under the following conditions to the light sensitivity of the mono-layer electronic photographic photoreceptor that obtains.
Promptly, use drum sensitivity test machine (GENTEC (strain) system), charged to the state of+700V at the surface potential that makes mono-layer electronic photographic photoreceptor, use monochromatic light (half range value 20nm, the light intensity 0.6 μ J/cm of the wavelength 780nm that bandpass filter takes out from the white light of halide lamp
2) to mono-layer electronic photographic photoreceptor surface irradiation 50ms.Then, measure from exposure and begin surface potential through moment of 0.35 second as light sensitivity (V).The light sensitivity that obtains and the result of light sensitivity are illustrated in the table 1.
[embodiment 2]
In embodiment 2, use compound (ETM-2), make mono-layer electronic photographic photoreceptor in addition similarly to Example 1 and estimate by formula (12) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[embodiment 3]
In embodiment 3, the content of electron transporting agent is changed into 20 weight portions, make mono-layer electronic photographic photoreceptor in addition similarly to Example 2 and estimate.The result who obtains is illustrated in the table 1.
[embodiment 4]
In embodiment 4, the content of electron transporting agent is changed into 40 weight portions, make mono-layer electronic photographic photoreceptor in addition similarly to Example 2 and estimate.The result who obtains is illustrated in the table 1.
[embodiment 5]
In embodiment 5, use compound (ETM-3), make mono-layer electronic photographic photoreceptor in addition similarly to Example 1 and estimate by formula (13) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[embodiment 6]
In embodiment 6, use compound (HTM-2), make mono-layer electronic photographic photoreceptor in addition similarly to Example 1 and estimate by formula (6) expression as the cavity conveying agent.The result who obtains is illustrated in the table 1.
[embodiment 7]
In embodiment 7, use compound (ETM-2), make mono-layer electronic photographic photoreceptor in addition similarly to Example 6 and estimate by formula (12) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[embodiment 8]
In embodiment 8, use compound (ETM-3), make mono-layer electronic photographic photoreceptor in addition similarly to Example 6 and estimate by formula (13) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[embodiment 9]
In embodiment 9, use compound (HTM-3), make mono-layer electronic photographic photoreceptor in addition similarly to Example 1 and estimate by formula (7) expression as the cavity conveying agent.The result who obtains is illustrated in the table 1.
[embodiment 10]
In embodiment 10, use compound (ETM-2), make mono-layer electronic photographic photoreceptor in addition similarly to Example 9 and estimate by formula (12) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[embodiment 11]
In embodiment 11, use compound (ETM-3), make mono-layer electronic photographic photoreceptor in addition similarly to Example 9 and estimate by formula (13) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[embodiment 12]
In embodiment 12, use compound (HTM-4), make mono-layer electronic photographic photoreceptor in addition similarly to Example 1 and estimate by formula (8) expression as the cavity conveying agent.The result who obtains is illustrated in the table 1.
[embodiment 13]
In embodiment 13, use compound (ETM-2), make mono-layer electronic photographic photoreceptor in addition similarly to Example 12 and estimate by formula (12) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[embodiment 14]
In embodiment 14, use compound (ETM-3), make mono-layer electronic photographic photoreceptor in addition similarly to Example 12 and estimate by formula (13) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[comparative example 1]
In comparative example 1, use compound (HTM-5), make mono-layer electronic photographic photoreceptor in addition similarly to Example 1 and estimate by formula (10) expression as the cavity conveying agent.The result who obtains is illustrated in the table 1.
[comparative example 2]
In comparative example 2, use compound (ETM-2), similarly make mono-layer electronic photographic photoreceptor with comparative example 1 in addition and estimate by formula (12) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[comparative example 3]
In comparative example 3, use compound (ETM-3), similarly make mono-layer electronic photographic photoreceptor with comparative example 1 in addition and estimate by formula (13) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[comparative example 4]
In comparative example 4, use compound (ETM-4), similarly make mono-layer electronic photographic photoreceptor with comparative example 1 in addition and estimate by formula (14) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[comparative example 5]
In comparative example 5, use compound (HTM-6), make mono-layer electronic photographic photoreceptor in addition similarly to Example 1 and estimate by following formula (19) expression as the cavity conveying agent.The result who obtains is illustrated in the table 1.
[comparative example 6]
In comparative example 6, use compound (ETM-2), similarly make mono-layer electronic photographic photoreceptor with comparative example 5 in addition and estimate by formula (12) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[comparative example 7]
In comparative example 7, use compound (ETM-3), similarly make mono-layer electronic photographic photoreceptor with comparative example 5 in addition and estimate by formula (13) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[comparative example 8]
In comparative example 8, use compound (ETM-4), similarly make mono-layer electronic photographic photoreceptor with comparative example 5 in addition and estimate by formula (14) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[comparative example 9]
In comparative example 9, use compound (HTM-7), make mono-layer electronic photographic photoreceptor in addition similarly to Example 1 and estimate by following formula (20) expression as the cavity conveying agent.The result who obtains is illustrated in the table 1.
[comparative example 10]
In comparative example 10, use compound (ETM-2), similarly make mono-layer electronic photographic photoreceptor with comparative example 9 in addition and estimate by formula (12) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[comparative example 11]
In comparative example 11, use compound (ETM-3), similarly make mono-layer electronic photographic photoreceptor with comparative example 9 in addition and estimate by formula (13) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[comparative example 12]
In comparative example 12, use compound (ETM-4), similarly make mono-layer electronic photographic photoreceptor with comparative example 9 in addition and estimate by formula (14) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[comparative example 13]
In comparative example 13, use compound (HTM-8), make mono-layer electronic photographic photoreceptor in addition similarly to Example 1 and estimate by following formula (21) expression as the cavity conveying agent.The result who obtains is illustrated in the table 1.
[comparative example 14]
In comparative example 14, use compound (ETM-2), similarly make mono-layer electronic photographic photoreceptor with comparative example 13 in addition and estimate by formula (12) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[comparative example 15]
In comparative example 15, use compound (ETM-3), similarly make mono-layer electronic photographic photoreceptor with comparative example 13 in addition and estimate by formula (13) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[comparative example 16]
In comparative example 16, use compound (ETM-4), make mono-layer electronic photographic photoreceptor in addition similarly to Example 1 and estimate by formula (14) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[comparative example 17]
In comparative example 17, the content of electron transporting agent is changed into 20 weight portions, similarly make mono-layer electronic photographic photoreceptor with comparative example 16 in addition and estimate.The result who obtains is illustrated in the table 1.
[comparative example 18]
In comparative example 18, the content of electron transporting agent is changed into 40 weight portions, similarly make mono-layer electronic photographic photoreceptor with comparative example 16 in addition and estimate.The result who obtains is illustrated in the table 1.
[comparative example 19]
In comparative example 19, use compound (ETM-5), similarly make mono-layer electronic photographic photoreceptor with comparative example 16 in addition and estimate by following formula (22) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[table 1]
Utilizability on the industry
If mono-layer electronic photographic photoreceptor of the present invention and image processing system have owing to use The hydrazone compound of ad hoc structure is as the cavity conveying agent time, makes molten to the regulation solvent of electron transporting agent Xie Du within prescribed limit, thereby can effectively improve the surface characteristic of photosensitive layer.
Consequently, even can both establishment photosensitive layer table when under any environment for use, forming image The generation of the stain in the generation of the film forming on the face and the formation image that causes thus, and then can effectively send out Wave the charge delivery capability of the excellence of the hydrazone compound with ad hoc structure, can stably keep speed Characteristic.
Thereby, the expectation of mono-layer electronic photographic photoreceptor of the present invention and image processing system to duplicator, High-qualityization of the various image processing systems such as printer and long lifetime etc. are made remarkable contribution.
Claims (15)
1, a kind of mono-layer electronic photographic photoreceptor, it has photographic layer on matrix, this photographic layer contains charge generating, cavity conveying agent, electron transporting agent and binding resin in one deck, it is characterized in that, described cavity conveying agent is the hydrazone compound by following general formula (1) expression, and described electron transporting agent has value in 27～50 weight % scopes with respect to the solubleness of tetrahydrofuran under measuring 25 ℃ of temperature;
In the general formula (1), R
1And R
2For the difference independent substituent, be the alkyl of hydrogen atom, carbon number 1～6, the alkoxy or the dialkyl amido of carbon number 1～6, the alkyl in the described dialkyl amido is the alkyl of carbon number 1～6, A
1Be methyl, phenyl or benzyl, described benzyl is by a kind of alkyl of carbon number 1～6 or the benzyl that a kind of alkoxy replaced of carbon number 1～6.
2, mono-layer electronic photographic photoreceptor according to claim 1, it is characterized in that, on following matrix, form the resin molding that contains by the hydrazone compound of described general formula (1) expression, when impregnated in olein under the following conditions, be value in 1～10mg scope with respect to the elution amount of olein by the hydrazone compound of described general formula (1) expression;
Resin molding is formed: relative polycarbonate resin 100 weight portions, the hydrazone compound of being represented by general formula (1) is 80 weight portions
Thick resin film: 30 μ m
Matrix external diameter: 30mm
Matrix length (steeping length): 40mm
Olein amount: 30g
Temperature: 25 ℃
Time: 20 hours.
3, mono-layer electronic photographic photoreceptor according to claim 1 and 2 is characterized in that, described electron transporting agent is for being selected from least a by in the compound of following general formula (2)～(4) expressions:
In the general formula (2), R
3Be the aryl of the carbon number 6～30 of the alkyl of the carbon number 1～6 of halogen atom, replacement or non-replacement or replacement or non-replacement, R
4For replacing or the aryl of the carbon number 6～30 of alkyl, replacement or the non-replacement of the carbon number 1～6 of non-replacement or by-O-R
5The group of expression, wherein, R
5The aralkyl of the aryl of the carbon number 6～30 of alkyl, replacement or the non-replacement of the carbon number 1～6 of expression replacement or non-replacement or the carbon number 7～30 of replacement or non-replacement;
In the general formula (3), R
6And R
7Be the difference independent substituent, the alkyl of the carbon number 1～6 of expression replacement or non-replacement;
In the general formula (4), R
8～R
12Be the difference independent substituent, the alkyl of the carbon number 1～8 of expression hydrogen atom, halogen atom or replacement or non-replacement.
4, mono-layer electronic photographic photoreceptor according to claim 1 is characterized in that, described relatively binding resin 100 weight portions, the content of described electron transporting agent are the value in 10～70 weight portion scopes.
5, mono-layer electronic photographic photoreceptor according to claim 1 is characterized in that, the external diameter of described matrix is the value in 10～25mm scope.
6, mono-layer electronic photographic photoreceptor according to claim 1 is characterized in that, described relatively binding resin 100 weight portions, the content of described hydrazone compound are the value in 20～120 weight portion scopes.
7, mono-layer electronic photographic photoreceptor according to claim 1 is characterized in that, described relatively binding resin 100 weight portions, the content of described charge generating are the value in 0.2～40 weight portion scope.
8, mono-layer electronic photographic photoreceptor according to claim 1 is characterized in that, described charge generating is for being selected from by the phthualocyanine pigment of following formula (15)～(18) expressions (at least a among the CGM-A～D).
9, mono-layer electronic photographic photoreceptor according to claim 1 is characterized in that, described hydrazone compound is for being selected from least a by in the compound (HTM-1～4) of following formula (5)～(8) expressions.
10, mono-layer electronic photographic photoreceptor according to claim 1 is characterized in that, described binding resin comprises the hydrophobicity polycarbonate resin.
11, mono-layer electronic photographic photoreceptor according to claim 10 is characterized in that, described hydrophobicity polycarbonate resin comprises the polycarbonate resin with siloxane structure.
12, a kind of image processing system, it disposes live part, developing parts and transfer member around Electrophtography photosensor, it is characterized in that described Electrophtography photosensor is any described mono-layer electronic photographic photoreceptor in the aforesaid right requirement 1～11.
13, image processing system according to claim 12 is characterized in that, described developing parts is for adopting the parts of cleaning mode simultaneously that develop.
According to claim 12 or 13 described image processing systems, it is characterized in that 14, at least one parts in described live part, developing parts and the transfer member contact with described Electrophtography photosensor.
15, image processing system according to claim 12 is characterized in that, described image processing system is a compounding machine.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008049185A JP5288835B2 (en) | 2008-02-29 | 2008-02-29 | Single layer type electrophotographic photosensitive member and image forming apparatus |
| JP2008049185 | 2008-02-29 | ||
| JP2008-049185 | 2008-02-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101520614A true CN101520614A (en) | 2009-09-02 |
| CN101520614B CN101520614B (en) | 2012-03-28 |
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|---|---|---|---|
| CN2008101807614A Expired - Fee Related CN101520614B (en) | 2008-02-29 | 2008-12-02 | Single-layer electrophotograph photoreceptor and image forming apparatus |
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|---|---|
| JP (1) | JP5288835B2 (en) |
| CN (1) | CN101520614B (en) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59223432A (en) * | 1983-06-02 | 1984-12-15 | Mitsubishi Paper Mills Ltd | Electrophotographic sensitive body |
| JPH05341544A (en) * | 1992-06-08 | 1993-12-24 | Mita Ind Co Ltd | Electrophotographic sensitive body |
| JPH05341545A (en) * | 1992-06-08 | 1993-12-24 | Mita Ind Co Ltd | Electrophotographic sensitive body |
| JP2000214611A (en) * | 1999-01-25 | 2000-08-04 | Kyocera Mita Corp | Electrophotographic photoreceptor |
| JP2000314969A (en) * | 1999-04-30 | 2000-11-14 | Fuji Denki Gazo Device Kk | Electrophotographic photoreceptor and electrophotographic device |
| JP2002040678A (en) * | 2000-07-31 | 2002-02-06 | Kyocera Mita Corp | Electrophotographic photoreceptor |
| JP4570300B2 (en) * | 2001-09-21 | 2010-10-27 | 山梨電子工業株式会社 | Electrophotographic photoreceptor |
| KR100988187B1 (en) * | 2003-03-14 | 2010-10-18 | 야마나시덴시코교 가부시키가이샤 | Electrophotographic photoreceptor |
| JP2004294589A (en) * | 2003-03-26 | 2004-10-21 | Shindengen Electric Mfg Co Ltd | Electron transfer material, photosensitive material, electrophotographic photoreceptor, and image forming apparatus |
| JP2005121727A (en) * | 2003-10-14 | 2005-05-12 | Shinichi Tamura | Electrophotographic photoreceptor |
| JP4829625B2 (en) * | 2006-01-31 | 2011-12-07 | 京セラミタ株式会社 | Electrophotographic photosensitive member and image forming apparatus |
-
2008
- 2008-02-29 JP JP2008049185A patent/JP5288835B2/en not_active Expired - Fee Related
- 2008-12-02 CN CN2008101807614A patent/CN101520614B/en not_active Expired - Fee Related
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| JP2009205037A (en) | 2009-09-10 |
| CN101520614B (en) | 2012-03-28 |
| JP5288835B2 (en) | 2013-09-11 |
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