CN101526762B - Mono-layer type electronic photographic photoreceptor and image forming device - Google Patents
Mono-layer type electronic photographic photoreceptor and image forming device Download PDFInfo
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- CN101526762B CN101526762B CN2009100051676A CN200910005167A CN101526762B CN 101526762 B CN101526762 B CN 101526762B CN 2009100051676 A CN2009100051676 A CN 2009100051676A CN 200910005167 A CN200910005167 A CN 200910005167A CN 101526762 B CN101526762 B CN 101526762B
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Abstract
The invention relates to a mono-layer type electronic photographic photoreceptor and an image forming device comprising the same. For the mono-layer type electronic photographic photoreceptor, a hole transport agent is the hydrazone compound shown in the following general formula (1), and an electron transport agent has a value within a range of 27-50 wt.% as solubility (measured temperature: 25 DEG C) in tetrahydrofuran. In the general formula (1), R<1> and R<2> are independent substituent groups of hydrogen atom, alkyl with 1-6 carbon atoms, alkoxyl group with 1-6 carbon atoms or dialkylamino; the alkyl in the dialkylamino contains 1-6 carbon atoms; R<3> and R<4> are independent substituent groups of alkyl with 1-6 carbon atoms, aralkyl group with 6-20 carbon atoms or aromatic group with 6-20 carbon atoms and m represents 0 or 1.
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 charge transport agent such as binding resin, charge generating and cavity conveying agent or electron transporting 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, photoreceptor material chosen item 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) high and (various conditions such as v) easy to manufacture and cheapness with the intermiscibility of organic solvent and binding resin.
So, a kind of Electrophtography photosensor is disclosed, said Electrophtography photosensor has used by the hydrazone compound conduct of formula (30) expression and has satisfied the excellent cavity conveying agent (for example patent documentation 1) of so various conditions, particularly cavity conveying ability.
In the general formula (30), Ra and Rb represent to have substituent alkyl, aralkyl or aryl independently, and X and Y represent hydrogen atom, alkyl, alkoxy or dialkyl amido independently, and k representes 0 or 1.
Patent documentation 1: special fair 5-33392 (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 the remarkable problem that reduces the light sensitivity characteristic of kind meeting according to the electron transporting agent of combination use.
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 under hot and humid condition, forming image, 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 cavity conveying ability 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 through 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.
One side of the present invention is 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, the cavity conveying agent is the hydrazone compound by formula (1) expression; And electron transporting agent solubleness with respect to tetrahydrofuran under measuring 25 ℃ of temperature has the value in 27～50 weight % scopes.
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 said dialkyl amido is the alkyl of carbon number 1～6.R
3And R
4For the difference independent substituent, be the alkyl of carbon number 1～6, the aralkyl of carbon number 6～20 or the aryl of carbon number 6～20.M representes 0 or 1.
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; Have the electron transporting agent basis of regulation solubleness and have the 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, through 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 matrix, form the resin molding that contains by the hydrazone compound of general formula (1) expression; When under following condition, impregnated in olein, be the 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
Through 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 by the compound shown at least a in the compound of formula (2)～(4) expression.
In the general formula (2), R
7Be the alkyl of halogen atom, replacement or non-substituted carbon number 1～6 or the aryl of replacement or non-substituted carbon number 6～30, R
8For replacing or the aryl of alkyl, replacement or the non-substituted carbon number 6～30 of non-substituted carbon number 1～6 or by-O-R
9The group of expression, wherein, R
9The aryl of alkyl, replacement or the non-substituted carbon number 6～30 of expression replacement or non-substituted carbon number 1～6 or the aralkyl of replacement or non-substituted carbon number 7～30.
In the general formula (3), R
10And R
11Be the difference independent substituent, the alkyl of expression replacement or non-substituted carbon number 1～6.
In the general formula (4), R
12～R
16Be the difference independent substituent, the alkyl of expression hydrogen atom, halogen atom or replacement or non-substituted carbon number 1～8.
Through 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.
Through 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.
Through 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.
And when constituting mono-layer electronic photographic photoreceptor of the present invention, with respect to said binding resin 100 weight portions, the content of preferred said hydrazone compound is the value in 20～120 weight portion scopes.
Through such formation, can, Electrophtography photosensor in photographic layer, disperse said hydrazone compound fully when obtaining sufficient light sensitivity characteristic.
And when constituting mono-layer electronic photographic photoreceptor of the present invention, said hydrazone compound is preferably and is selected from least a by in the compound (HTM-1～3) of following formula (5)～(7) expression.
Through such formation, because excellent cavity conveying ability, ozone resistance, what can improve Electrophtography photosensor effectively is the electrical characteristics of representative with the light sensitivity characteristic.
And when constituting mono-layer electronic photographic photoreceptor of the present invention, preferred said binding resin comprises the hydrophobicity polycarbonate resin.
Through such formation, regulate the character of surface of photographic layer easily, can more effectively be suppressed at the generation of the film forming on photographic layer surface.
And when constituting mono-layer electronic photographic photoreceptor of the present invention, preferred said hydrophobicity polycarbonate resin comprises the polycarbonate resin with siloxane structure.
Through such formation, siloxane structure is partly brought into play excellent hydrophobicity, can more easily regulate the character of surface of photographic layer.
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 Electrophtography photosensor is a mono-layer electronic photographic photoreceptor of the present invention.
Promptly; Be equipped with the excellent specific mono-layer electronic photographic photoreceptor of character of surface 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 when constituting image processing system of the present invention, preferred developing parts is for adopting the parts of cleaning mode simultaneously that develop.
Through 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 representes 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 simultaneously representes that above-mentioned developer roll when being formed on the electrostatic latent image adhering toner on the Electrophtography photosensor, is recovered to the mode in the developing apparatus with the residue toner.
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.
Through 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 explain the figure of mono-layer electronic photographic photoreceptor structure of the present invention;
Fig. 2 is used to explain that the solubleness of electron transporting agent and stain produce the figure that concerns between the number;
Fig. 3 is used to explain 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 explain 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 explain 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: duplicating 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 to 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; Vapor deposition 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 through 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, 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, ozone resistance originally, what can improve Electrophtography photosensor effectively is the electrical characteristics of representative with the light sensitivity characteristic.
But, find the electron transporting agent that above-mentioned hydrazone compound with ad hoc structure uses through combination, 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, through using the compound of solubleness in specialized range to the regulation solvent, can effectively solve the problem of the stain generation that above-mentioned light sensitivity characteristic and film forming cause among the present invention as electron transporting agent.
Above-mentioned effect is considered to through 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
Concrete example by the hydrazone compound of general formula (1) expression can be enumerated the compound (HTM-1～3) by following formula (5)～(7) expression.
(1)-3 elution amount
On matrix, form the resin molding contain by the hydrazone compound of general formula (1) expression, and when under following condition, impregnated in olein, be preferably the value in 1～10mg scope by the elution amount of 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 through 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, if because having the elution amount of the hydrazone compound of ad hoc structure is the value of not enough 1mg, then the intermiscibility to organic material is low excessively, may be difficult in photographic layer, fully disperse.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 the elution amount value in 3～8mg scope more preferably of the hydrazone compound of ad hoc structure under the rated condition, further be preferably the value in 4～7mg scope.
(1)-4 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, relative binding resin 100 weight portions in the photographic layer, the value in the scope of 30～100 weight portions more preferably further is preferably the 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 through 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, through 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 the 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 value in the scope of 27～40 weight % more preferably, further is preferably the 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 representes 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-2) of formula (6) 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-4) of following formula (8) 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, can know that 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 from family curve A.
More specifically, can know that the solubleness along with electron transporting agent is increased to 27 weight % from 20 weight %, stain produces number and sharply reduces to from about about 200/A4 paper near the 50/A4 paper.And, can know the scope of solubleness more than 27 weight % of electron transporting agent, can make stain produce number and stably remain near the 50/A4 paper.
On the other hand, can know that when the cavity conveying agent was used by the compound beyond the hydrazone compound of general formula (1) expression, even change the solubleness of electron transporting agent, stain produces number not to be reduced yet from family curve B.
More particularly, no matter the solubleness that can know electron transporting agent how, stain produces number all can reach the scope about 200/A4 paper, can't effectively suppress stain and produce number.
Thereby; Can know from family curve A and B, when combination is used the hydrazone compound with ad hoc structure and had the electron transporting agent of regulation solubleness, compare with the situation of using combination in addition; The interaction of performance nonanticipating property can suppress the generation of stain effectively.
Then, the relation between the generation of using Fig. 3 to explain to form the stain in the image and the character of surface of 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.
That is, 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 through 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 representes 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.
Can know that from this family curve 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; Can know hydrazone compound and have the special interaction between the electron transporting agent of regulation solubleness with ad hoc structure; 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 property compounds at present, but be preferably the compound by above-mentioned general formula (2)～(4) expression as 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 (9)～(11) 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; Through 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 the electron transport efficient in the photographic layer, also can improve the light sensitivity characteristic of Electrophtography photosensor.
That is, if because 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 the 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 possibly 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 to explain that the content of electron transporting agent and the stain that forms in the image produce the relation between the number.
That is, Fig. 4 representes 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 (10) 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 (12) 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, can know that electron transporting agent is used when having the compound of regulation solubleness,, also can stain be produced number and stably be suppressed near the number of 50/A4 paper even change the content of electron transporting agent significantly from family curve A.
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 can stain be produced number and stably be suppressed near the number the 50/A4 paper.
On the other hand, can know that electron transporting agent is used when not having the compound of regulation solubleness,, stain produced number also do not produce big influence even change the content of electron transporting agent from family curve B.
More particularly, can know 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; Through characteristic curve A and family curve B can know; In hydrazone compound with ad hoc structure and interaction with performance nonanticipating property between the electron transporting agent of regulation solubleness; And be the value in the scope of 10～70 weight portions through 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, perylene series pigments, disazo pigment, no metal naphthalene phthalocyanine pigment, metal naphthalene phthalocyanine pigment, side's sour inner salt series pigments (squarylium series pigment), trisazo pigment, indigo pigment, azulenes pigment (azulenium pigment), phthalocyanine pigments, pyrans pigment, anthanthrone pigment, triphenylmethane series pigments, toluidine series pigments, pyrazoline series pigments, the such organic light-guide electricity body of quinacridone pigment; 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 (13)～(16) 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, electrical characteristics, 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, electrical characteristics 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 anti-oxidant, free radical scavenger, singlet quencher (singlet quencher), ultraviolet light absorber at present.And, in order to improve the light sensitivity of photographic layer, also can be with charge generating and with for example known sensitizers such as terphenyl, naphthalene halide quinones, acenaphthene.
(5) binding resin
Binding resin can be enumerated for example styrenic; SB; Styrene-acrylonitrile copolymer; Styrene-maleic acid copolymer; Acrylic acid series polymeric compounds; Styrene-propene acid based copolymer; Tygon; Ethylene-vinyl acetate copolymer; Haloflex; PVC; Polypropylene; Vinyl chloride-vinyl acetate copolymer; Polyester; Alkyd resin; Polyamide; Polyurethane; Polycarbonate; Polyarylate; Polysulfones; Diallyl phthalate ester resin; 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 resin.
Its reason is, if the hydrophobicity polycarbonate resin, 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, further is preferably the value in 15～45 mu m ranges.
(7) manufacturing approach
The not special restriction of the manufacturing approach of Electrophtography photosensor can be through implementing like 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-dioxa 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 that the dispersiveness, the photographic layer that make charge generating are surperficial, 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; With this coating fluid through known approaches for example knife coating, dip coating, spraying process be coated with, 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 manufacturing approach, 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, developing parts and transfer member around Electrophtography photosensor; 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, cavity conveying agent, electron transporting agent and binding resin in one deck; 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 duplicating machine for example shown in Figure 5 30.Above-mentioned duplicating 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 through original copy conveying mechanism 34b, outputed 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 around this photosensitive drums 41, disposes charged device 42, exposer 43, developer 44 and transfer roll 45 along the sense of rotation of 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, through charged device 42 its surperficial uniform chargeds.Afterwards,, implement exposure-processed, form electrostatic latent image on the surface of this photosensitive drums 41 through 43 pairs of photosensitive drums of exposer 41 according to above-mentioned picture signal.
According to this electrostatic latent image, develop through 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 under any service condition, can both stably form the image of the distinctness of effective inhibition stain generation, 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, through 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, then its character of surface is excellent, even therefore adopt the cleaning mode simultaneously that develops, also can the generation of the generation of film forming and the stain that causes thus be suppressed 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 owing to more be easy to generate the lip-deep film forming of photographic layer transfer belt, oozing out of charged roller generation.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, based on embodiment the present invention is elaborated.
[embodiment 1]
1, the manufacturing of mono-layer electronic photographic photoreceptor
In container, packing into as X type metal-free phthalocyanine (CGM-A) 4 weight portions by formula (13) 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 (9) expression of electron transporting agent, as the viscosity average molecular weigh of binding resin is 30,000 polycarbonate resin 100 weight portions and as tetrahydrofuran 800 weight portions of solvent.
Then, with bowl mill mixed and dispersed 50 hours, the preparation photographic layer was used coating fluid.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 for preparing when mono-layer electronic photographic photoreceptor is made in coating on the matrix of external diameter 30mm is used coating fluid; 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 closes and reaches (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 uses 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
Under following condition, carried out mensuration 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 BPF. 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 result of the light sensitivity that obtains is illustrated in the table 1.
[embodiment 2]
In embodiment 2, use compound (ETM-2), likewise make mono-layer electronic photographic photoreceptor with embodiment 1 in addition and estimate by formula (10) 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, likewise make mono-layer electronic photographic photoreceptor with embodiment 2 in addition 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, likewise make mono-layer electronic photographic photoreceptor with embodiment 2 in addition and estimate.The result who obtains is illustrated in the table 1.
[embodiment 5]
In embodiment 5, use compound (ETM-3), likewise make mono-layer electronic photographic photoreceptor with embodiment 1 in addition and estimate by formula (11) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[embodiment 6]
In embodiment 6, use compound (HTM-2), likewise make mono-layer electronic photographic photoreceptor with embodiment 1 in addition 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), likewise make mono-layer electronic photographic photoreceptor with embodiment 6 in addition and estimate by formula (10) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[embodiment 8]
In embodiment 8, use compound (ETM-3), likewise make mono-layer electronic photographic photoreceptor with embodiment 6 in addition and estimate by formula (11) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[embodiment 9]
In embodiment 9, use compound (HTM-3), likewise make mono-layer electronic photographic photoreceptor with embodiment 1 in addition 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), likewise make mono-layer electronic photographic photoreceptor with embodiment 9 in addition and estimate by formula (10) expression as electron transporting agent.The result who obtains is illustrated in the table 1.
[embodiment 11]
In embodiment 11, use compound (ETM-3), likewise make mono-layer electronic photographic photoreceptor with embodiment 9 in addition and estimate by formula (11) 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-4), likewise make mono-layer electronic photographic photoreceptor with embodiment 1 in addition and estimate by formula (8) 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), likewise make mono-layer electronic photographic photoreceptor with comparative example 1 in addition and estimate by formula (10) 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), likewise make mono-layer electronic photographic photoreceptor with comparative example 1 in addition and estimate by formula (11) 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), likewise 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 5]
In comparative example 5, use compound (HTM-5), likewise make mono-layer electronic photographic photoreceptor with embodiment 1 in addition and estimate by following formula (17) 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), likewise make mono-layer electronic photographic photoreceptor with comparative example 5 in addition and estimate by formula (10) 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), likewise make mono-layer electronic photographic photoreceptor with comparative example 5 in addition and estimate by formula (11) 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), likewise 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 9]
In comparative example 9, use compound (HTM-6), likewise make mono-layer electronic photographic photoreceptor with embodiment 1 in addition and estimate by following formula (18) 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), likewise make mono-layer electronic photographic photoreceptor with comparative example 9 in addition and estimate by formula (10) 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), likewise make mono-layer electronic photographic photoreceptor with comparative example 9 in addition and estimate by formula (11) 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), likewise 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 13]
In comparative example 13, use compound (ETM-4), likewise make mono-layer electronic photographic photoreceptor with embodiment 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 14]
In comparative example 14, the content of electron transporting agent is changed into 20 weight portions, likewise make mono-layer electronic photographic photoreceptor with comparative example 13 in addition and estimate.The result who obtains is illustrated in the table 1.
[comparative example 15]
In comparative example 15, the content of electron transporting agent is changed into 40 weight portions, likewise make mono-layer electronic photographic photoreceptor with comparative example 13 in addition and estimate.The result who obtains is illustrated in the table 1.
[comparative example 16]
In comparative example 16, use compound (ETM-5), likewise make mono-layer electronic photographic photoreceptor with comparative example 13 in addition and estimate by following formula (19) 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; Owing to use hydrazone compound the time as the cavity conveying agent with ad hoc structure; Make electron transporting agent to the solubleness of regulation solvent within specialized range, thereby can improve the character of surface of photographic layer effectively.
Consequently; Even the generation of the stain in the formation image that can both effectively suppress the generation of the lip-deep film forming of photographic layer when under any environment for use, forming image and cause thus; And then can effectively bring into play the charge delivery capability of the excellence of hydrazone compound with ad hoc structure, can stably keep the light sensitivity characteristic.
Thereby mono-layer electronic photographic photoreceptor of the present invention and image processing system are expected high-qualityization of various image processing systems such as duplicating machine, printer and long lifetime etc. are made remarkable contribution.
Claims (8)
1. 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 said cavity conveying agent is the hydrazone compound by following formula (6)～(7) expression, and; Said electron transporting agent solubleness with respect to tetrahydrofuran under measuring 25 ℃ of temperature has the value in 27～50 weight % scopes, for being selected from by at least a compound in the compound of formula (2)～(4) expression;
In the general formula (2), R
7Be the alkyl of halogen atom, replacement or non-substituted carbon number 1～6 or the aryl of replacement or non-substituted carbon number 6～30, R
8For replacing or the aryl of alkyl, replacement or the non-substituted carbon number 6～30 of non-substituted carbon number 1～6 or by-O-R
9The group of expression, wherein, R
9The aryl of alkyl, replacement or the non-substituted carbon number 6～30 of expression replacement or non-substituted carbon number 1～6 or the aralkyl of replacement or non-substituted carbon number 7～30;
In the general formula (3), R
10And R
11Be the difference independent substituent, the alkyl of expression replacement or non-substituted carbon number 1～6;
In the general formula (4), R
12～R
16Be independent substituent respectively, the expression hydrogen atom, or replace or the alkyl of non-substituted carbon number 1～8.
2. mono-layer electronic photographic photoreceptor according to claim 1; It is characterized in that;, following elution forms the resin molding that contains said hydrazone compound on testing with matrix; When under following condition, impregnated in olein, said hydrazone compound is the value in 1～10mg scope with respect to the elution amount of olein;
Resin molding is formed: relative polycarbonate resin 100 weight portions, said hydrazone compound is 80 weight portions
Thick resin film: 30 μ m
Matrix external diameter: 30mm is used in the elution test
Matrix length: 40mm is used in the elution test
Olein amount: 30g
Temperature: 25 ℃
Time: 20 hours.
3. mono-layer electronic photographic photoreceptor according to claim 1 is characterized in that, said relatively binding resin 100 weight portions, the content of said electron transporting agent are the value in 10～70 weight portion scopes.
4. mono-layer electronic photographic photoreceptor according to claim 1 is characterized in that, the external diameter of said matrix is the value in 10～25mm scope.
5. mono-layer electronic photographic photoreceptor according to claim 1 is characterized in that, said relatively binding resin 100 weight portions, the content of said hydrazone compound are the value in 20～120 weight portion scopes.
6. image processing system; It disposes live part, developing parts and transfer member around Electrophtography photosensor; It is characterized in that said Electrophtography photosensor is any described mono-layer electronic photographic photoreceptor in the aforesaid right requirement 1～5.
7. image processing system according to claim 6 is characterized in that, said developing parts is for adopting the parts of cleaning mode simultaneously that develop.
8. according to claim 6 or 7 described image processing systems, it is characterized in that at least one parts in said live part, developing parts and the transfer member contact with said Electrophtography photosensor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008051683 | 2008-03-03 | ||
| JP2008051683A JP2009210676A (en) | 2008-03-03 | 2008-03-03 | Monolayer type electrophotographic photoreceptor and image forming device |
| JP2008-051683 | 2008-03-03 |
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| CN101526762A CN101526762A (en) | 2009-09-09 |
| CN101526762B true CN101526762B (en) | 2012-03-21 |
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| JP5663296B2 (en) * | 2010-06-04 | 2015-02-04 | 京セラドキュメントソリューションズ株式会社 | Image forming apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005062221A (en) * | 2003-08-11 | 2005-03-10 | Fuji Denki Gazo Device Kk | Single layer type positive charge electrophotographic photoreceptor |
| JP2006076894A (en) * | 2004-09-07 | 2006-03-23 | Sharp Corp | Hydrazone compound and electrophotographic photo-sensitive body using the hydrazone compound, and image forming apparatus equipped with the electrophotographic photo-sensitive body |
| CN1808288A (en) * | 2005-01-18 | 2006-07-26 | 京瓷美达株式会社 | Single layer type electrophotographic photoconductor and image forming device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05150491A (en) * | 1991-11-29 | 1993-06-18 | Mita Ind Co 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 |
| JPH0611862A (en) * | 1992-06-25 | 1994-01-21 | Mita Ind Co Ltd | Electrophotographic sensitive body |
| JPH0611857A (en) * | 1992-06-25 | 1994-01-21 | Mita Ind Co Ltd | Electrophotographic sensitive body |
| JPH0611863A (en) * | 1992-06-25 | 1994-01-21 | Mita Ind Co Ltd | Electrophotographic sensitive body |
| JP3121143B2 (en) * | 1992-10-08 | 2000-12-25 | 京セラミタ株式会社 | Electrophotographic photoreceptor |
| JP2000214612A (en) * | 1999-01-25 | 2000-08-04 | Kyocera Mita Corp | Electrophotographic photoreceptor |
-
2008
- 2008-03-03 JP JP2008051683A patent/JP2009210676A/en active Pending
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005062221A (en) * | 2003-08-11 | 2005-03-10 | Fuji Denki Gazo Device Kk | Single layer type positive charge electrophotographic photoreceptor |
| JP2006076894A (en) * | 2004-09-07 | 2006-03-23 | Sharp Corp | Hydrazone compound and electrophotographic photo-sensitive body using the hydrazone compound, and image forming apparatus equipped with the electrophotographic photo-sensitive body |
| CN1808288A (en) * | 2005-01-18 | 2006-07-26 | 京瓷美达株式会社 | Single layer type electrophotographic photoconductor and image forming device |
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| CN101526762A (en) | 2009-09-09 |
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