JPS60102634A - Photosensitive body - Google Patents

Abstract

PURPOSE:To provide a photosensitive body superior in photosensitive characteristics by incorporating a carrier generating material made of a specified bisazo compd. in combination with a carrier transfer material made of a specified styryl compd. CONSTITUTION:A photosensitive body has a photosensitive layer 4 composed of a carrier generating phase 2 contg. a bisazo compd. represented by general formula [ I ] (in which A is one of groups of formulae [II]-[V]), and a carrier transfer phase 3 contg. a styryl compd. represented by general formula VI. As a result, the obtained photosensitive body is stable against heat and light, superior in characteristics, such as electrostatic charge retentivity, sensitivity, and residual potential, small in fatigue change in repeated uses, and high in durability.

Description

DETAILED DESCRIPTION OF THE INVENTION 1. Industrial Application Field The present invention relates to a photoreceptor, such as an electrophotographic photoreceptor, having a photosensitive layer comprising a carrier generation phase and a carrier transport phase.

2. Prior Art Conventionally, inorganic photoreceptors having a photosensitive layer mainly composed of an inorganic photoconductive substance such as selenium, zinc oxide, or cadmium sulfide have been widely used as electrophotographic photoreceptors. However, these inorganic photoreceptors have poor sensitivity, thermal stability, moisture resistance,
The properties required for an electrophotographic photoreceptor, such as durability, are not necessarily satisfactory. For example, selenium crystallizes due to heat, the adhesion of fingerprints, etc., and therefore its properties as an electrophotographic photoreceptor tend to deteriorate. In addition, when using cadmium sulfide, moisture resistance and durability are
When zinc oxide is used, there is a problem in durability, and selenium and cadmium sulfide have significant restrictions in manufacturing and handling.

In order to overcome the drawbacks of inorganic photoreceptors as described above,
In recent years, active development and research has been conducted on the use of various organic photoconductive substances as materials for the photosensitive layer of electrophotographic photoreceptors.

For example, in Japanese Patent Publication No. 50-10496, poly-N-
Vinylcarbazole and 2.4+ 7-)-1J
4] I1 with photosensitive film containing -9-fluorenone
4'M and C are described for 1 photoreceptor. However, this photoreceptor does not necessarily have high sensitivity and durability. IV: It's not something you can do. In order to improve these shortcomings, we developed a high-sensitivity photoreceptor with high durability by assigning the carrier generation function and carrier transport function to different substances in the photosensitive layer. In such so-called function-separated type electrophotographic photoreceptors, it is possible to select materials that exhibit each function from a wide range of materials, so it is possible to select from a wide range of materials that exhibit each function. It is possible to produce a photographic photoreceptor relatively easily.

In the past, many materials have been proposed as carrier-generating materials that are effective for photosensitive materials. As described in Publication No. 43-16198, there is amorphous selenium.This is combined with an organic carrier transport substance, but the carrier generation layer made of amorphous selenium is crystallized by heat etc. as described above. It has the disadvantage that its characteristics deteriorate due to

In addition, many electrophotographic photoreceptors using organic dyes or organic pigments as carrier-generating substances have been proposed. JP-A-55-22834, JP-A-54-79632, JP-A-56-11
This is already known from Publication No. 6040 and the like.

However, electrophotographic photoreceptors using these bisazo compounds are not necessarily satisfactory in terms of sensitivity, residual potential, or even stability during repeated use (in addition, the selection of the material to be used as a carrier transport material is difficult). Due to its limited range, etc., it does not fully satisfy the wide range of requirements experienced by electrophotographic photoreceptors in the electrophotographic process.Moreover, known bisazo compounds have relatively good sensitivity in the short or medium wavelength range. However, there is no sensitivity in the long wavelength range, and for example, if a Tanges double lamp is used as a light source, the long wavelength component will be useless;
Further, long wavelength light such as a semiconductor laser cannot be used as a light source. Therefore, the usable wavelength range is limited, and it cannot be used for many purposes.

In addition, in general, in a photoreceptor, a gear transport substance that is effective for a particular carrier-generating substance is not necessarily rF+ with Qll for other carrier-generating substances; It cannot be assumed that a carrier-generating substance that is effective when applied to a certain carrier-transporting substance will also be effective against other carrier-transporting substances.If the combination of both substances is inappropriate, Not only does the electrophotographic sensitivity become low, but also the discharge efficiency is particularly poor for low electric fields, so the so-called residual potential increases, and in the worst case, it accumulates with each repeated use, making it impractical for practical use. It becomes unusable for electrophotographic purposes.

In this way, what are the constituents of the carrier generation phase and the constituents of the carrier transport phase? It is thought that there is no lawful selection method G'' for suitable combinations with j-, and it is necessary to practically determine advantageous combinations from among many nb+ quality groups.

3. Object of the invention The object of the present invention is to contain a specific carrier-generating substance, be stable against heat and light, have high carrier-generating efficiency, and have excellent photoconductivity even in a wide wavelength range. Furthermore, the object of the present invention is to provide a photoreceptor that, in combination with a specific carrier transporting substance, can maintain a stable potential history state even during repeated use, and can always form good visible images.

4. Structure of the invention and its effects: The present invention provides a photoreceptor having a photosensitive layer consisting of a carrier generation phase and a carrier transport phase, in which the carrier generation phase is a bisazo compound represented by the following general formula (1). A photoreceptor, characterized in that the carrier (1) contains at least a styryl compound represented by the following general formula (n).

General formula [■]: (However, in this general formula, A is Z: a group of atoms necessary to constitute a substituted or unsubstituted aromatic carbocycle or a substituted or unsubstituted aromatic heterocycle, Y: a hydrogen atom , hydroxyl group, carboxyl group or ester group thereof, sulfo group, substituted or unsubstituted carbamoyl group, or substituted or unsubstituted sulfamoyl group, R1: hydrogen atom, substituted or unsubstituted alkyl group, substituted or unsubstituted amine group, substituted or unsubstituted carbamoyl group, carboxyl group or ester group thereof, or cyano group, Ar: substituted or unsubstituted aryl group, Da: substituted or unsubstituted alkyl group, substituted or unsubstituted aralkyl group, or (Represents a substituted or unsubstituted oryl group.) General formula [■]: However, in this general formula, R' and R'are; Represents a group, substituted, 1. (For example, an alkyl group, an alkyl group, an alkyl group, and a -nyl group are used.

12-1 Substitution name or unjr'+1 substituted phenyl group, nanothyl group, an tolyl group, fluoro Renyl group or compound represents a bare ring group, As a substituent, a alkyl group, alco xy group, HI51gen Atomic, Hydroxyl Nokichi, SO A) using an enyl group].

R', R7,] Rf is a hydrogen atom, a halogen atom,
Represents an argyl group, an alkoxy group or an alkylamino group. ) In the present invention, the above-mentioned "phase" includes not only the case where the material forms a so-called layer, but also the case where the constituent materials form a phase in which they are in contact with each other.

According to the present invention, as is clear from the explanation of the examples to be described later, it is stable against heat and light, and has excellent characteristics such as charge retention, sensitivity, and residual potential, and can be used repeatedly. In some cases, it is possible to provide a photoreceptor with little fatigue change and high durability. In particular, in the present invention, the bisazo compound represented by the above general formula (1) has an excellent carrier generation ability, and this is combined with the carrier transport substance of the above general formula (II) to functionally separate the photosensitive layer. By using a mold configuration, a photoreceptor with even better characteristics can be obtained.

Among the bisazo compounds represented by the above general formula (1), carbazole group-containing bisazo compounds represented by the following general formula [white] are particularly effective.

General formula [■]: I0 (I and ■, 10 and 11 are) 2-alkyl group (, Al: 1 kyne group or aryl group, R1tR'', R1Nb, Iglb, 1j1 is, Hydrogen atom, haL1genrei-t8alkyl, 21sialcoquine, (, amine group, hydroxyl group, monoaryl) in total.) This general formula [The white hisazo compound has a carbazole group in the molecule that is It is thought that this contributes to the effect, and it provides excellent sensitivity especially in the long wavelength range, and in combination with the carbamoyl group moiety in the same molecule, it acts effectively as a coupler and has good sensitivity over a wide wavelength range. It exhibits excellent sensitivity characteristics and exhibits excellent characteristics as a light source for semiconductor lasers.

Specific examples of the bisazo compound represented by the general formula N) that are effective in the present invention include those represented by the following structural formula, but this does not limit the bisazo compound to be used in the present invention. It's not something you can do.

(r　-1＞ (1-3) (1-7) 0C21-15 (1-12) OCH.

(1-14) CH.

\ (1-16) (1-17) (1-18) (1-19) (1-22) (1-28) (1-37) (1-41) (+-43) In addition, the general Styrylation represented by formula (II)/″-
Kusunoki n) Specific examples include, but are not limited to, those having the following structural formulas.

Compound l) 2) 3) (U-4) (II-5) (II-6) (U-7) (II-8> (II-9) (IT-10) (II-21) (II -23> (II-24) (IT=25) (I[-26) (II-27) (II-28) (II-29) (II-30) (II-31) (■-32) ( II-33> (II-34) The styryl compound of general formula [11] above can be used alone as a charge transport substance, but it may also be used in combination with other charge transport substances. As the transport substance, an amine derivative represented by the following general formula (I[l) is preferable.

General formula [■] Ni- (However, in this general formula, Ar', Ar' represents a substituted or unsubstituted phenyl group, and a halogen atom, an alkyl group, a nitro group, or an alkoxy group is used as a substituent.

Ar': Represents a substituted or unsubstituted phenyl group, naphthyl group, 7'thryl h(, fluorenyl group, heterocyclic group, substituents include alkyl group, alkoxy!, (, halogen atom, hydroxyl group, aryloxy group) , an aryl group, an amino group, a nitro group, a piperidino group, a morpholino group, a naphthyl group, an anthryl group, and a substituted amino group.However, a nosyl group, an alkyl group, an aryl group, and an aralkyl group are used as a substituent for the substituted amino group. ) Specific examples of the amine derivative represented by the general formula (III) include those having the following structural formula, but are not limited thereto.

Exemplary compound (III-1) (m-2) (III-3) CIII-4> (I[1-5) :me) (II[-7> (III-8) (III-9) ( III-10) (III-11) (III-12) (III-13) Qn-14) (1-15) H,C (III-16) (III-17) (III-18) (I[[ -19) (III-20) (III-21) (I[l-22) (I[[-23) (III-24) (III-25) (I[l-26) (In-27) ( I[[-29) (III-30) ([-31) (lII-33) The above-mentioned bisazo compound, for example, the bisazo compound shown in (I-1) above, can be prepared by, for example, the method shown in the following synthesis example. It can be synthesized by

The f2.7-dini-LJ-9-fluorenone and malonic acid nitrile were prepared by a known method (for example, 1.1.0-rg,
Chem, Vol. 30, p. 6411 (Published in 19F35) Due to poor performance, dehydration condensation -1iU, J:1 compound (2゜7-sinitro-9-dicyanomethylidenefluorene) was mixed with tin and hydrochloric acid, J: When reduced, 2,7
-Diami2-9-dicyanomethylidenefluorene dihydrochloride was obtained. 3.31 g (0.01 mol) of it was dispersed in 100 mρ of hydrochloric acid, the dispersion 71k was cooled to a temperature of 5°C while stirring It2, and 1 mol of sodium nitrite was added.
．． 8 liters of water in which 4 g was dissolved in 20 nl of water was added dropwise. After the dropwise addition was completed, stirring was continued under cooling for an additional hour, and then filtration was performed. Add log of ammonium hexafluorophosphate to the obtained filter 11ν, collect the remaining crystals, and extract the hexanefluorobosphene of tetosidunium.
This crystal is dissolved in N,N-dimethylbormamide 2(1(in+7!), and the solution for the next Kamebring reaction is added dropwise to 1.!7k.

Next, 5.27 g (0.02 mol) of 2-hydroxy-3-naphthoic acid anilide (naphthol AS) was mixed with N,
It was dissolved in 200 mβ of N-dimethylbormamide, and 5.5 g of triethanolamine was added thereto. The solution was cooled to a temperature of 5° C., and while stirring vigorously, the above-mentioned dropping solution was added dropwise thereto. . After the dropwise addition was completed, the mixture was stirred under cooling for 1 hour, and further stirred at room temperature for 2 hours, and the resulting crystals were collected by filtration. Get this crystal! After washing twice with N,N-dimethylformamide and twice with 1β acetone and drying, a blue compound 6. '70g (Yield 83.0%
) was obtained.

This blue compound was identified as the target compound (I -1). In addition, elemental analysis results (chemical formula: C50H5
There is oNtO food. ) was as follows.

Element CHN Actual value (%) 74.61 3.70 13.67 Theoretical value (%) 74.43 3.74 13.89 The photoreceptor of the present invention, for example, electrophotography, can be prepared by using the bisazo compound represented by the general formula CI). In order to constitute the photosensitive layer of the photoreceptor, a layer obtained by dispersing the bisazo compound in binder may be provided on the conductive support.Alternatively, the bisazo compound may be used as a carrier generating substance. , a so-called functionally separated photosensitive layer of a laminated type or a dispersed type may be provided in combination with at least a carrier transporting substance of the general formula ([) having carrier transporting 11 pins.

In the composition of the photosensitive layer, not only one type of bisazo compound represented by the above general formula (1) but also a combination of two or more types may be used, and it may be used in combination with other bisazo compounds or other carrier-generating substances. You can also do it.

When the electrophotographic photoreceptor is of a functionally separated type, it is constructed as shown in FIGS. 1 to 6. The ones in Figures 1 and 3 are
A photosensitive layer 4 is provided on a conductive support l, which is made of a laminate of a gear generation layer 2 containing two series of bisazo compounds as a main component and a carrier transport layer 3 containing at least a styryl compound as a main component as described above. The configuration is as follows. 2 and 4 also have a structure in which an intermediate IW 5 is provided between the conductive support 1 and the photosensitive layer 4. The one in FIG. 5 is a conductive support using photosensitive N4, which is made by dispersing a carrier generating substance 7 made of the above-mentioned bisazo compound in a layer 6 containing at least the above-mentioned styryl compound (carrier transporting substance) as a main component. 1, the structure shown in FIG. 6 is a structure in which a photosensitive layer 4 similar to that shown in FIG. 5 is provided on the conductive support 1 via an intermediate layer 5.

In the case of forming a photosensitive layer having a two-layer structure, the carrier generation layer 2 can be provided by the following method.

(a) A method of applying a solution prepared by dissolving the above-mentioned bisazo compound in a suitable solvent, or a solution prepared by adding a binder to the solution and mixing and dissolving the same.

(b) A method in which the above-mentioned bisazo compound is made into fine particles in a dispersion medium using a ball mill, a homomixer, etc., and a binder is added as necessary to mix and disperse the obtained dispersion, and the resulting dispersion is applied.

In these methods, the superbeneficial wave f+Jll-l・i'
, ) If we distribute the children by -1, then the average part is 11 (possibly 11 pi).

The solvent or +J dispersion medium used for forming the carrier generation layer includes n-butylamine, diethylamine, ethylenediamine, isobutylamine, triethanolamine, triethylenesoamine, N,N-dimethylborumamide, acetate).・N, methyl ethyl ketone, cyclohexanone, hein, toluene, xylene, chloroform, 1,2-dichloroethane, dichloromethane, tetrahydrofuran, dioxane, methanol, nitanol, impropatol, ethyl acetate, butyl acetate, dimethyl sulfoxide, etc. can be mentioned.

When a binder is used to form a carrier generation layer or a carrier transport layer, any binder can be used, but an electrically insulating film-forming polymeric polymer that is hydrophobic to 44+ and has a high dielectric constant may be used. Combination is preferred. Examples of such polymers include, but are not limited to, the following:

a) Polycarbonate b) Polyester C) Methacrylic resin d) Acrylic resin e) Polyvinyl chloride f) Polyvinylidene chloride g) Polystyrene 11) Polyvinyl acetate i) Styrene-butadiene copolymer j) Vinylidene chloride-acrylonitrile copolymer k) Vinyl chloride-vinyl acetate copolymer β) Vinyl chloride-vinyl acetate-maleic anhydride copolymer m) Silicone resin n) Silicone-alkyd resin o) Phenol-bormaldehyde resin p) Styrene-
Alkit resin q) Poly-N-vinylcarbazole r) Polyvinyl butyral These binders can be used alone or as a mixture of two or more. 2, +111 is 0 for the carrier-originated L product V″ for the λ inder.
-100% by weight (particularly 0-10% [11%)] and 10-500 parts by weight of the carry 1' transport material.

Thus formed 1F, +, rear ℃' 1
The thickness of γ12 is preferably 0.01 to 20 μrnζJ), but preferably 0.05 to μIII. -1-Yaria・1ri・) Tsuji layer thickness: 2~100
/Ill, preferably 5 to 30/noI11.

In addition, by dispersing and reducing the μ of the bisazo compound described above (when forming a luminescent layer or a carrier light e former f1);
It is preferable that the bisazo compound is formed into a powder with an average particle size of 5 μm or less, preferably 2 μm or less, and more preferably less than 2 μm. In other words, if the particle size is too large, the fraction if& into jγ1 will be poor. At the same time, part of the particle will protrude from the surface, worsening the flatness of the surface, and in some cases, the protruding part of the particle will become eccentric. The toner filming phenomenon tends to occur when the toner particles are spread or the toner particles are spread thereon. When the carrier generating material of the present invention has a long wavelength light (~800 nm), the surface charge is neutralized by the generation of thermally excited carriers within the carrier generating material, and the surface charge of the carrier generating material is It is thought that this neutralization effect is greater when the particle size is large. Therefore, high resistance and high sensitivity can only be achieved by reducing the particle size. However, if the particle size is too small, it tends to aggregate, It is desirable to set the lower limit of the average grain size to 0.01 μm because the resistance of the layer increases, the sensitivity and repeatability decrease due to an increase in crystal defects, or there is a limit to miniaturization.

Further, the carrier-generating N (or phase) preferably contains amine in an amount of 20 times or less (preferably a trace amount) of the carrier-generating substance.

That is, amines are generally said to be effective in improving sensitivity (see JP-A No. 52-55643), but if the amount is too large, amines often have a strong irritating odor.
By using a large amount of amine, the environmental conditions at the time of coating become poor, the drying time after coating becomes long, and the surface becomes sticky even after drying. However, the amine should be 20 times less than the carrier generating substance (preferably l OK
's or less, if specified as 5 (j''1 or less), the charge generator 5!t will not be substantially dissolved by the amine during the coating formation of the carrier !: I-, IFt.
(In other words, the amine acts like a solvent.) It can be left in the coating solution for 11 minutes. As a result, coating in a dispersed state becomes possible, the crystallinity of the coated layer improves, and there is no change in absorption spectrum, resulting in improved photosensitivity. Moreover, the dark decay and decrease in acceptance potential upon repeated use, which are generally caused by using an Ab-based compound as a carrier generating substance, are effectively prevented by the following two amine content ranges. Furthermore, since the amount of amine is small, the drying time after application is shortened, the surface becomes non-sticky, and environmental protection during application is also advantageous.

In addition, the above amine-containing -1'jr11 can be used to improve optical characteristics such as photosensitivity by adding an amine. This is noticeable when it has a functional group. In addition, with the above content of amine, the amine is effectively adsorbed to the acceptor site in the carrier generation layer, decreasing the acceptor concentration and increasing the electrical resistance of the carrier generation layer, thereby increasing the acceptance potential and darkening. It is thought that this can reduce the attenuation.

The above amines added in small amounts to the carrier generation layer include primary amines such as monoethanolamine, n-butylamine, and ethylenediamine, secondary amines such as jetanolamine and diethylamine, tertiary amines such as triethanolamine and triethylamine, and pyridine. , piperidine, and the like.

Furthermore, the carrier generation layer may contain a negative electrode or two or more types of electron-accepting substances for the purpose of improving sensitivity, reducing residual potential or fatigue during repeated use, and the like. Examples of electron-accepting substances that can be used here include succinic anhydride, maleic anhydride, dibromaleic anhydride, phthalic anhydride, tetrachlorophthalic anhydride, tetrabromophthalic anhydride, 3-nitrophthalic anhydride, 4-
Nitro-phthalic anhydride, pyromerino-1-acid anhydride, jll(
water mellitic acid, tetracyanoethylene, latlanor 7
1 quinodimethane, 0-dinitrohensen, nl-dinitrohensen, 1,3.5~1·, lini l-IU nhen-I! Chlorimide, chlorimide, quinone chlorimide, chlorimide, quinone chlorimide, quinone chlorimide, anthraquinone, anthraquinone, anthraquinone, 2.7-cyan Nitrofluorenone, 2,4.7-1-linito-1'' fluorenone, 2,4.5.7-teI-lanito-U sololenon, 9-fluorenonedene [cycyanotylene malonodinitrile], Borini I-Rho 9 −Fluorenonedene−[
dicyanomenalemmaU nojini) IJ le),hi')
'J 711ia, Q -2l-LJ benzoin 1u, p
-Nitrobenzoic acid, 3,5-Sini I Lobenzo ML Pentafluorobenzoic acid, 5-2J Rosali J-Renzoic acid, 3.5
Examples include -dinitrosalicylic acid, phthalic acid, merino I-acid, and other compounds with large electron It power. In addition, when adding an electron-accepting substance, the weight ratio of 4E substance:electron-accepting substance-100:o,
o1-200 preferably 100:o, i-100.

Note that the support 1 on which the photosensitive layer described above is to be provided is a metal plate,
A conductive thin layer made of a metal drum or a conductive polymer, a conductive compound such as indium oxide, or a metal such as aluminum, palladium, or gold is applied to a substrate such as paper or plastic film by means such as coating, vapor deposition, or lamination. The following is used. As the intermediate layer which functions as an adhesive layer or a barrier layer, a binder made of a polymer such as a polymer, polyvinyl alcohol, ethyl cellulose, carboxymethyl cellulose or the like or aluminum oxide is used. It will be done.

5. Examples Hereinafter, the present invention will be explained in more detail with reference to specific examples and comparative examples.

On a conductive support made of a polyester film laminated with aluminum foil, vinyl chloride-1T, 100% vinyl chloride, and 100% polyvinyl chloride were applied.
10J CKr1 Water Chemistry Association) lj, 'lsaG
, (1."+μm intermediate layer was formed. Next, each carrier photoorganism 51'L having a predetermined particle size shown in FIG.
Apply force to 11 and disperse in a ball mill for 12 hours U7 (f
, jf (sometimes with or without addition of amine) is applied onto the intermediate layer so that the film thickness after drying is [), 5
It was coated and dried for 4J to form a carrier generation layer. Furthermore, each carrier transport object S shown in FIG. 7:
! i and the binder with 1,2-dichloro'loethane 53m
A gear transport layer was formed by applying and drying a solution dissolved in 6 to give a film thickness of 12 μl after drying, and each electrophotographic (reflector) was exploded.

The electrophotographic photoreceptor thus obtained was tested using an electrostatic paper tester rSP.
, -428 type" (Kawa 1" Electric 1] A1 Manufacturing Co., Ltd.), and conducted the following characteristic test. 1: For I discharge.The amount of exposure required to attenuate the surface potential of the photosensitive layer to 1/2 by irradiating light from a tungsten lamp with the illuminance at L being 35 II ux, that is, half-reduction exposure. The amount E1/2 was determined.In addition, the initial response to the acceptance potential (■) during charging due to the corona discharge and that after 10,000 copies were measured.Also, the dark decay rate (VA - Vt) /
VtX 100 (%) and further initial potential VI -5
5o to attenuate from 00(V) to -50(V)
.

The required exposure 1 Jo (ffux·sec) was measured. Furthermore, the sensitivity of the semiconductor laser (780 nm) was also shown (◎ mark is extremely good, ○ mark is good, Δ is slightly poor, It is shown in Figure 7. However, the carrier-generating substance and the carrier-transporting substance are indicated by the numbers of the structural formulas exemplified above.

According to this result, based on the present invention, <Example sample (No.
It can be seen that all of Samples Nos. 1 to 14) exhibit considerably better electrophotographic characteristics than Comparative Examples Nos. 1 to 5.

FIG. 8 shows a sensitivity curve a when a photoreceptor is constructed as in the same example using the bisazo compound according to the present invention (Example No. 1 in FIG. 7) as a carrier generating substance.
However, it can be seen that the light source according to the present invention exhibits excellent sensitivity in a wide wavelength range, even in a long wavelength range such as a semiconductor laser range at 11h.

[Brief explanation of drawings]

The drawings show embodiments of the present invention, and FIG. 1, FIG. 2, FIG. Figure 7 shows a comparison of changes in characteristics depending on the composition of each electrophotographic photoreceptor. , 2----Carrier generation Hzu3---Carrier・1・SA+;:Al1i4---One photosensitive layer 6- It is a mixed layer of a carrier-initiating substance and a rear transport substance. -JP Physician Hiroshi Aisaka ((Ih1 person) Figure 1 Figure 2 Diagram 3 Figure 4 Figure 5 Sieve 6I\I (Self-procedure amendment document S. 1980, 4th day 1, Incident display Showa 1958 Patent Application No. 210622 2, Name of the invention Photoreceptor 3, Relationship to the case of the person making the amendment Patent applicant address 1-26-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo Name
(127) Roku Konishi Photo Industry Co., Ltd. 4, Agent 6, Number of inventions increased by the amendment 7, Detailed explanation of the invention in the specification subject to the amendment 8, Contents of the amendment (hereinafter, the margin goes to the next page) Continued) r(II-37) (I[-38) (n-39) (11-40) (II-41) m-425 ([1-43) (H-44) (II-45) (+1 -46) (II-47) (IT-48) (II-49) (n -50) (■-51) (II-52> (II-53) (11-54) (II-55) (11 -56) (II-57) (II-58) (II-59) (II-60) (It-61) (II-62) (II-63) (I[-64> (11-65) ( n-66) Rishi 11 Sushi 11 CH2 (II-67) (II-68) (II-69) C11-70) (II-71) (n-72) (It-73) (■-74 ) (It-75) (II-76) (II-77) (If-78) (II-79) (II-80) (II-81) (II-82) (n-83) (II-84 ) (II-85) (II-86) (n-87) (II-88) (II-89) (II-90) (II-91) (II-92) (II-93) (II-94 ) (II-95) (1116) (II-97) (II-98) (■-99) (II-100) (II-1011 (II-102) (Ir2O3) (11-104) (II-105 ) ShiHa (II-106) (n-107) (II-108) (■-109) (U-110) (II-111) (n-112) (n-113) (II-114) (II -115) (IT-116) (II-119) (II-120) (11-121) (II-122) (n-123) (It'-124> (I[-125) (n-126) (n-127> (It-128) (n-129) (II-130) (n-131) (■-132) (11-133) (II-134) (Rho 135) (n-136) ( n-137) (u -138) (II-139) (II-140) (II-141) (n-142) (II-143) (II-144) (II-145) (n-146) ( ■-147) (II-148) (It-149) (II-150) (It-151) (It-152) (n-153) (II-154) (II-155) (n-156) ( n-157) (n-158) (II -, 159) CHzCHSCHzCN (II-160) (II-161) CHzCHzOCHB (II-162) CH2CH2CHxCβ (II-163) (n-164) (II-165) (II -166) II-167) (II-168) (II-169) (II-170) (II-171) (II-172) (n-173) (II-174) (It-175) Top-

Claims (1)

[Scope of Claims] 1. In a photoreceptor having a photosensitive layer consisting of a carrier generation phase and a carrier transport phase, the carrier generation phase contains a bisazo compound represented by the following general formula (1), and the carrier transport phase A photoreceptor comprising at least a styryl compound represented by the following general formula CI+). General formula [I]: (In this general formula, Δ is ○h Z: Atom J1'1 necessary to constitute a substituted or unsubstituted aromatic carbocycle or an LSI substituted or unsubstituted aromatic heterocycle , Y: hydrogen atom, hydroxyl group, carpoxole group or the like, sulfo group, substituted or unsubstituted carbamoyl group, substituted or unsubstituted sulfamoyl group, R1, hydrogen atom, substituted or unsubstituted Substituted alkyl group, substituted or unsubstituted amino group, substituted or unsubstituted carbamoyl group, carboxyl group or ester group thereof, or cyano group, Ar: substituted or unsubstituted aryl group, etc.: substituted or unsubstituted alkyl group (Represents a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryl group.) General formula [■]: (However, in this general formula, R', Baba, a substituted or unsubstituted alkyl group, or a phenyl group) , and the substituents are alkylno, (, alcoquine group, and phenyl W). As a substituent, alkyl W, an alkoxy group, a hydrogen atom, a hydroxyl group, and a phenyl group are used. R', R7, and R'r are hydrogen atoms, halogen atoms, alkyl groups, alkyl groups, or )′ru: represents a 1-ruamino groupJo)