EP0061094A1 - Electrophotographic recording material - Google Patents
Electrophotographic recording material Download PDFInfo
- Publication number
- EP0061094A1 EP0061094A1 EP82102008A EP82102008A EP0061094A1 EP 0061094 A1 EP0061094 A1 EP 0061094A1 EP 82102008 A EP82102008 A EP 82102008A EP 82102008 A EP82102008 A EP 82102008A EP 0061094 A1 EP0061094 A1 EP 0061094A1
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- European Patent Office
- Prior art keywords
- alkyl
- phenyl
- thiazolyl
- charge
- electrophotographic recording
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 0 C*C(C(C(C)=*)=C1C(**)=*)=C(*)C(C)C1=* Chemical compound C*C(C(C(C)=*)=C1C(**)=*)=C(*)C(C)C1=* 0.000 description 3
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0622—Heterocyclic compounds
- G03G5/0624—Heterocyclic compounds containing one hetero ring
- G03G5/0627—Heterocyclic compounds containing one hetero ring being five-membered
- G03G5/0629—Heterocyclic compounds containing one hetero ring being five-membered containing one hetero atom
Definitions
- the invention relates to an electrophotographic recording material consisting of an electrically conductive carrier material and a photoconductive double layer made of organic materials, as well as a method for producing these electrophotographic recording materials and their use for reprographic purposes.
- the surface of an electrophotographic element which contains a photo-semiconducting layer is first uniformly charged electrostatically for image formation.
- the photo semiconductor layer becomes electrically conductive on the irradiated surfaces, as a result of which the electrostatic surface charge flows off at these points if the electrically conductive carrier material is grounded.
- the unexposed areas retain their surface charge, so that a charge image corresponding to the original remains after the exposure.
- this charge image is treated with fine pigment pigment particles which have previously been charged in the opposite way to the surface charge of the electrophotographic element, these color pigment particles are deposited in the unexposed areas of the electrophotographic element and thus develop the invisible charge image into a visible image of the original.
- the image created in this way is then transferred to another surface, for example on paper, and fixed on it.
- the electrophotographic element can either be composed of a homogeneous layer of a photo semiconductor on an electrically conductive carrier material or of several layers arranged one above the other on the carrier.
- DE-OS 22 20 408 discloses materials of this type consisting of a conductive carrier, a first layer which contains charge carrier-producing compounds and a second layer with charge carrier transporting substances which is arranged in addition.
- Another group of charge-generating photoconductive organic materials is dispersed in the form of pigment particles in a matrix binder and applied to a support in a layer which contains the individual photoconductive particles.
- These are the electrophotographic elements described in the literature, which contain monoazo, disazo and squaric acid dye derivatives as coloring materials (e.g. US Pat. No. 3,775,105, US Pat. No. 3,824,099, US Pat. No. 3,898,084).
- the object of the invention was therefore to create extremely light-sensitive electrophotographic layers by means of organic photo semiconductors, which can be produced as simply as possible from a dye dispersion.
- the electrophotographic element should continue to be flexible, elastic and abrasion-resistant, the surface of which should be smooth and free of scoring, if possible without aftertreatment.
- the invention accordingly relates to dyes which are active in the first layer of the electrophotographic recording material as components which generate charge carriers.
- Dyes of the general formula I are suitable for this in which R 1 to R 4 are hydrogen, halogen, methyl and / or phenylthio, one or two of the radicals R 1 to R 4 are C 2 -C 6 -alkyl, cyclohexyl, phenyl, 2-naphthyl, hydroxy, C - to C 6 -alkoxy allyloxy, phenoxy, methylthio, benzylthio, C - to C 4 - alkylsulfonyl phenoxysulfonyl, trimethylsilyl, trifluoromethyl, cyano, nitro, amino, N, NC - to C 4 -dialkylamino, a radical of the formula a radical of the formula NH.CO.R 5 , where R 5 is C 1 to C 6 alkyl
- R 7 and R 8 which may be the same or different, are C 1 -C 4 -alkyl, cyclohexyl or phenyl or R and R together represent a tetramethylene group, an aromatic heterocyclic or heterocyclically saturated 5- or 6-ring and X , Y and Z have the meaning given above, and, compounds of the formulas III, IV and V in which X, Y and Z have the meaning given above.
- R 9 and R 10 which may be the same or different, cyano, nitro, 4-halophenyl, 4-cyanophenyl, 4-nitrophenyl, C 1 - to C 8 -alkoxycarbonyl, phenoxycarbonyl, a radical of the formula -CONH-R 11 , in which R 11 is hydrogen, C 1 - to C 9 -alkyl or a phenyl optionally substituted by phenoxy, cyano, nitro or CF 3 , up to three halogen, C 1 - to C 4 -alkyl or for the rest one.
- heterocyclic amine Sulfamoyl; Phenylsulfonyl with up to three halogens and / or C 1 - to C 4 -alkyl in the phenyl nucleus; a remainder of the formula in which A represents -0-, -S- or ⁇ NR, R represents hydrogen or C 1 - to C 4 -alkyl and R 12 and R 13 represents hydrogen or halogen, C 1 - to C 4 -alkyl or C 1 - are C 4 alkoxy; 1H-Naphth-2,3-d-imidazolyl, pyridyl, 4-thiazolyl, 2-methyl-4-thiazolyl, 2-phenyl-1,3,4-thiadiazolyl- (5), 2-quinolinyl, 3-indolyl or 3-benzothiazolyl.
- R 14 and R 15 which may be the same or different, cyano, methylcarbonyl, phenylcarbonyl, 4-nitrophenyl, 4-cyanophenyl, C 1 - to C6-alkoxycarbonyl, phenoxycarbonyl, phenylsulfonyl, a radical of the formula in which A , R 12 and R 13 have the meaning given above.
- R 16 and R 17 which may be the same or different, cyano, 4-nitrophenyl, 4-cyanophenyl, C 1 - to C 4 -alkoxycarbonyl, phenylsulfonyl, a radical of the formula in which R 12 and R 13 are hydrogen or halogen, C 1 - to C 4 -alkyl or C 1 - to C 4 -alkoxy and R 19 is hydrogen or C 1 - to C 4 -alkyl; 1H-Naphth-2,3-d-imidazolyl, pyridyl, 4-thiazolyl, 2-methyl-4-thiazolyl, 2-phenyl-1,3,4-thiadiazolyl- (5), 2-quinolinyl, 3-indolyl or 3-benzothiazolyl.
- R 9 has the meaning given above and R 6 'represents the residue of an aromatic or heterocyclic amine or hydrazine.
- R 14 has the meaning given above and R 18 phenyl, p- t olyl, 2- or 4-anisidyl, 2- or 4-chlorophenyl, 4-carbethoxyphenyl, 2-oxazolyl, 2-thiazolyl, 2- Imidazolyl, 2- (4-phenylthiazclyl), 2- (4-methyl-5-carboethoxythiazolyl), 2-benzthiazolyl.
- 2- (6-Ethoxybenzthiazolyl) 2-benzimidazolyl, 2- (1-methylbenzimidazolyl), 2- (5 - phenyl-1,3,4-thiadiazolyl) or 3-indazolyl.
- the first charge carrier-producing layer is applied to the electrically conductive layer carrier in the form of a dispersion.
- the dispersion for the first layer is produced by rolling together about 20 to 85 percent by weight of the solids content of the dispersion in one or more of the dyes suitable according to the invention and 80 to 15 percent by weight in a binder which is customary for this purpose and which may have barrier properties, in the form of a Solution in an organic, easily evaporable solvent.
- the first layer is cast in a thickness of approximately 0.005 to 5 / ⁇ m, preferably 0.05 to 2.0 / ⁇ m, which is to be understood as the solid layer thickness.
- An adhesive layer with a thickness of about 0.05 to 5 / ⁇ m, preferably 0.1 to 0.8 / ⁇ m, can be arranged between the carrier and the first layer.
- the transparent second layer is also arranged over the first layer by casting from a solution.
- the thickness of the second layer is preferably between 2 and 40 / um. It consists of 30 to 60 percent by weight, one or more charge carrier transporting compounds, 65 to 35 percent by weight of one or more binders customary for this, 0.1 to 4 percent by weight of additives that improve the mechanical properties and optionally up to 5 percent by weight of sensitizing or activating connections together.
- the casting process is carried out from a low-boiling solvent.
- a barrier layer of about 0.05 to 1.5 / ⁇ m, preferably 0.1 to 0.5 / ⁇ m is optionally arranged between the first and the second layer, while depending on the intended use of the electrophotographic recording material it may be appropriate to use a To apply the top and protective layer acting inactive layer on the charge transport layer.
- Aluminum foils, aluminum foils, nickel foils or plastic foils coated with aluminum, tin, lead, bismuth or similar metals, preferably polyester foils, are suitable as the electrically conductive carrier material. The selection is determined by the area of application of the electrophotographic element.
- the barrier layers between the conductive substrate and the first layer or between the same and the second layer usually consist of metal oxide layers, e.g. Alumina layers, polymers such as e.g. Polyamide, polyvinyl alcohol, polyacrylates, polystyrene or similar systems.
- the binder of the first layer can also serve as a barrier layer material at the same time.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photoreceptors In Electrophotography (AREA)
Abstract
Die Erfindung betrifft electrophotographische Aufzeichnungsmaterialien im wesentlichen bestehend aus einem elektrisch leitfähigen Trägermaterial und einer photohalbleitenden Doppelschicht aus einer ersten Ladungsträger erzeugende Farbstoffe enthaltenden Schicht und einer zweiten, mindestens eine im Licht Ladungen transportierenden Verbindung aufweisenden Schicht, wobei die Ladungsträger erzeugenden Farbstoffe solche der allgemeinen Formel I <IMAGE> sind, in der R¹ bis R<4> Wasserstoff und/oder nichtionische Substituenten, =X und =Y Reste von methylenaktiven Verbindungen, von aliphatischen, cycloaliphatischen, araliphatischen, aromatischen oder heterocyclischen Aminen oder Hydrazinen und Z Wasserstoff, Methyl oder Phenyl bedeuten sowie die Herstellung dieser Aufzeichnungsmaterialien und ihre Verwendung für reprographische Zecke.The invention relates to electrophotographic recording materials consisting essentially of an electrically conductive carrier material and a photoconductive double layer consisting of a first layer containing charge carrier-producing dyes and a second layer having at least one compound which transports charges in light, the charge carrier producing dyes being those of the general formula I < IMAGE> are in which R¹ to R <4> are hydrogen and / or nonionic substituents, = X and = Y are residues of methylene-active compounds, of aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic amines or hydrazines and Z is hydrogen, methyl or phenyl and the production of these recording materials and their use for reprographic ticks.
Description
Die Erfindung betrifft ein elektrophotographisches Aufzeichnungsmaterial bestehend aus einem elektrisch leitfähigen Trägermaterial und einer photohalbleitenden Doppelschicht aus organischen Materialien sowie ein Verfahren zur Herstellung dieser elektrophotographischen Aufzeichnungsmaterialien und ihre Verwendung für reprographische Zwecke.The invention relates to an electrophotographic recording material consisting of an electrically conductive carrier material and a photoconductive double layer made of organic materials, as well as a method for producing these electrophotographic recording materials and their use for reprographic purposes.
In der Elektrophotographie wird zur Bilderzeugung die Oberfläche eines elektrophotographischen Elements, das eine photohalbleitende Schicht enthält, zuerst uniform elektrostatisch aufgeladen. Bei der bildmäßigen Belichtung mit einer aktinischen, also die Photohalbleitung induzierenden Strahlung wird an den bestrahlten Flächen die photohalbleitende Schicht elektrisch leitend, wodurch an diesen Stellen die elektrostatische Oberfläcnenladung abfließt, falls das elektrisch leitende Trägermaterial geerdet ist. Die unbelichteten Stellen behalten dagegen ihre Oberflächenladung, so daß nach der Belichtung ein der Vorlage entsprechendes Ladungsbild verbleibt. Behandelt man dieses Ladungsbild mit Farbstoffpigmentteilchen feinster Form, die zuvor der Oberflächenladung des elektrophotographischen Elementes entgegengesetzt aufgeladen worden sind, so lagern sich diese Farbpigmentteilchen an den unbelichteten Stellen des elektrophotographischen Elements ab und entwickeln damit das unsichtbare Ladungsbild zu einem sichtbaren Abbild der Vorlage. Das auf diese Weise entstandene Bild wird anschließend auf eine andere Oberfläche, beispielsweise auf Papier übertragen und darauf fixiert.In electrophotography, the surface of an electrophotographic element which contains a photo-semiconducting layer is first uniformly charged electrostatically for image formation. In the imagewise exposure to actinic radiation, that is to say the photo semiconductor, the photo semiconductor layer becomes electrically conductive on the irradiated surfaces, as a result of which the electrostatic surface charge flows off at these points if the electrically conductive carrier material is grounded. The unexposed areas, on the other hand, retain their surface charge, so that a charge image corresponding to the original remains after the exposure. If this charge image is treated with fine pigment pigment particles which have previously been charged in the opposite way to the surface charge of the electrophotographic element, these color pigment particles are deposited in the unexposed areas of the electrophotographic element and thus develop the invisible charge image into a visible image of the original. The image created in this way is then transferred to another surface, for example on paper, and fixed on it.
Das elektrophotographische Element kann entweder aus einer homogenen Schicht eines Photohalbleiters auf einem elektrisch leitenden Trägermaterial oder aus mehreren, übereinander angeordneten Schichten auf dem Träger aufgebaut sein. Elektrophotographische Aufzeichnungsmaterialien mit einer mehrschichtigen, sogenannten Kompositstruktur sind beschrieben. So werden in der DE-OS 22 20 408 solche Mate- ' rialien aus einem leitfähigen Träger, einer ersten Schicht, die Ladungsträger erzeugende Verbindungen enthält, und einer darüber hinaus angeordneten zweiten Schicht mit Ladungsträger transportierenden Stoffen offenbart.The electrophotographic element can either be composed of a homogeneous layer of a photo semiconductor on an electrically conductive carrier material or of several layers arranged one above the other on the carrier. Electrophotographic recording materials with a multilayer, so-called composite structure described. For example, DE-OS 22 20 408 discloses materials of this type consisting of a conductive carrier, a first layer which contains charge carrier-producing compounds and a second layer with charge carrier transporting substances which is arranged in addition.
Für die Ladungsträger erzeugende Schichten sind neben den meist auf der Basis von Selen aufgebauten anorganischen Photohalbleitern auch eine Reihe von organischen Photohalbleitern bekannt. Eine Vielzahl von beschriebenen organischen Farbstoffen, welche bei Bestrahlung mit aktinischem Licht zur Ladungsträgererzeugung geeignet sind, müssen jedoch im Hochvakuum und bei Temperaturen über 300°C durch Verdampfung ober Sublimation auf dem Trägermaterial niedergeschlagen werden (z.B. DE-OS 22 20 408, 22 39 924). Solche Verfahren sind jedoch wenig wirtschaftlich und häufig wenig reproduzierbar. Außerdem kommen dafür nur thermisch äußerst stabile Farbstoffe infrage. Auf dem Gebiet der Elektrophotographie ist es aber wünschenswert, möglichst viele Farbstoffe als wirksame Bestandteile zur Verfügung zu haben.In addition to the inorganic photo semiconductors, which are mostly based on selenium, a number of organic photo semiconductors are also known for the layers which generate charge carriers. However, a large number of the described organic dyes, which are suitable for generating charge carriers when irradiated with actinic light, must be deposited on the carrier material by evaporation or sublimation in a high vacuum and at temperatures above 300 ° C (e.g. DE-OS 22 20 408, 22 39 924 ). However, such methods are not very economical and often not very reproducible. In addition, only thermally extremely stable dyes can be used. In the field of electrophotography, however, it is desirable to have as many dyes as effective components available.
Eine andere Gruppe ladungserzeugender photoleitfähiger organischer Materialien wird in Form von Pigmentteilchen in einem Matrixbindemittel dispergiert und in einer Schicht, welche die einzelnen photoleitfähigen Teilchen enthält, auf eine Unterlage aufgetragen. Dies sind die in der Literatur beschriebenen elektrophotographischen Elemente, welche als farbgebende Materialien Monoazo-, Disazo- und Quadratsäure-Farbstoffderivate enthalten (u.a. US-PS 3 775 105, US-PS 3 824 099, US-OS 3 898 084).Another group of charge-generating photoconductive organic materials is dispersed in the form of pigment particles in a matrix binder and applied to a support in a layer which contains the individual photoconductive particles. These are the electrophotographic elements described in the literature, which contain monoazo, disazo and squaric acid dye derivatives as coloring materials (e.g. US Pat. No. 3,775,105, US Pat. No. 3,824,099, US Pat. No. 3,898,084).
Es wurde auch schon vorgeschlagen, Monoazo- oder Disazofarbstoffe oder auch die Farbstoffderivate der Quadrat- säure in einem primäre organische Amine enthaltenden Lösungsmittel zu lösen und die ladungserzeugende Schicht aus der Lösung aufzutragen (DE-OS 26 35 887). Nachteilig an diesem Vorgehen ist jedoch, daß Amine sowohl stark umweltbelastend als auch lästig für den Verarbeiter sind.It has also been proposed to use monoazo or disazo dyes or the dye derivatives of the square to dissolve acid in a solvent containing primary organic amines and to apply the charge-generating layer from the solution (DE-OS 26 35 887). A disadvantage of this procedure, however, is that amines are both extremely polluting and troublesome for the processor.
Es hat daher nicht an Versuchen gefehlt, die Herstellung der einzelnen Schichten der Kompositstruktur eines elektrophotographischen Elements möglichst einfach zu erreichen. Hierfür bedarf es aber des Einsatzes neuer Farbstoffe als ladungserzeugende Komponenten.There has therefore been no lack of attempts to achieve the production of the individual layers of the composite structure of an electrophotographic element as simply as possible. However, this requires the use of new dyes as charge-generating components.
'Aufgabe der Erfindung war es daher äußerst lichtempfindliche elektrophotographische Schichten mittels organischen Photohalbleitern zu schaffen, die möglichst einfach aus einer Farbstoffdispersion hergestellt werden können. Das elektrophotographische-Element sollte weiterhin biegsam, elastisch und abriebfest sein, dessen Oberfläche möglichst ohne Nachbehandlung glatt und riefenfrei.The object of the invention was therefore to create extremely light-sensitive electrophotographic layers by means of organic photo semiconductors, which can be produced as simply as possible from a dye dispersion. The electrophotographic element should continue to be flexible, elastic and abrasion-resistant, the surface of which should be smooth and free of scoring, if possible without aftertreatment.
Die Lösung der Aufgabe geht von einem elektrophotographischen Aufzeichnungsmaterial aus, das sich
- a) aus einem elektrisch leitfähigen Trägermaterial,
- b) einer ersten Schicht, die Ladungsträger erzeugende Farbstoffe bestimmter Art enthält, mit einer Dicke von 0,005 bis 5 /um und
- c) einer zweiten, für das aktinische Licht weitgehend transparenten Schicht aus isolierenden organischen Materialien mit mindestens einer, im Licht Ladungen transportierenden Verbindung zusammensetzt.
- a) made of an electrically conductive carrier material,
- b) a first layer, which contains charge-generating dyes of a certain type, with a thickness of 0.005 to 5 / um and
- c) a second layer, which is largely transparent to actinic light, is composed of insulating organic materials with at least one compound which transports charges in the light.
Gegenstand der Erfindung sind demnach Farbstoffe, die in der ersten Schicht des elektrophotographischen Aufzeichnungsmaterials als Ladungsträger erzeugende Komponenten wirksam sind.The invention accordingly relates to dyes which are active in the first layer of the electrophotographic recording material as components which generate charge carriers.
Es war überraschend, daß als farblich abdeckende, Ladungsträger erzeugende Schichten für die elektrophotographischen Aufzeichnungsmaterialien Schichten mit Farbstoffen der im folgenden erläuterten Farbstoffklasse die gestellten Anforderungen erfüllen. Geeignet sind hierfür Farbstoffe der allgemeinen Formel I
Ebenfalls geeignet sind Verbindungen der Formel II
Bevorzugt sind Verbindungen der Formel VI
Besonders bevorzugt sind Verbindungen der Formel VII
Ganz besonders bevorzugt sind Verbindungen der Formel VIII
Weitere bevorzugte Verbindungen sind solche der Formel IX
Ebenfalls bevorzugt sind außerdem Verbindungen der Formel XI
Gleichfalls bevorzugt sind Verbindungen der Formel XIII
Besonders bevorzugt sind Verbindungen der Formel XIV
Auch Verbindungen der Formel XV.
Die erwähnten Verbindungen sind in der Literatur beschrieben. Sie können nach den in den DE-OSen 16 70 748, 21 21 524, 21 42 245 oder 28 30 501 beschriebenen Verfahren hergestellt werden, beispielsweise nach fol- gendem Schema: i
Zur Herstellung der erfindungsgemäßen elektrophotographischen Aufzeichnungsmaterialien wird die erste, Ladungsträger erzeugende Schicht in Form einer Dispersion auf den elektrisch leitfähigen Schichtträger aufgebracht. Die Herstellung der Dispersion für die erste Schicht erfolgt durch gemeinsames Rollen von etwa 20 bis 85 Gewichtsprozent des Feststoffgehaltes der Dispersion an einem oder mehreren der erfindungsgemäß geeigneten Farbstoffe und 80 bis 15 Gewichtsprozent an einem hierfür üblichen Bindemittel, das gegebenenfalls Sperrschichteigenschaften aufweisen kann, in Form einer Lösung in einem organischen leicht verdampfbaren Lösungsmittel.To produce the electrophotographic recording materials according to the invention, the first charge carrier-producing layer is applied to the electrically conductive layer carrier in the form of a dispersion. The dispersion for the first layer is produced by rolling together about 20 to 85 percent by weight of the solids content of the dispersion in one or more of the dyes suitable according to the invention and 80 to 15 percent by weight in a binder which is customary for this purpose and which may have barrier properties, in the form of a Solution in an organic, easily evaporable solvent.
Die erste Schicht wird in einer Dicke von etwa 0,005 bis 5 /um, vorzugsweise 0,05 bis 2,0 /um gegossen, wobei hierunter die Feststoffschichtdicke verstanden werden soll. Zwischen dem Träger und der ersten Schicht kann eine Haftschicht in einer Dicke von etwa 0,05 bis 5 /um, vorzugsweise 0,1 bis 0,8 /um angeordnet werden.The first layer is cast in a thickness of approximately 0.005 to 5 / µm, preferably 0.05 to 2.0 / µm, which is to be understood as the solid layer thickness. An adhesive layer with a thickness of about 0.05 to 5 / µm, preferably 0.1 to 0.8 / µm, can be arranged between the carrier and the first layer.
über der ersten Schicht wird die transparente zweite Schicht ebenfalls durch Gießen aus einer Lösung angeordnet. Die Dicke der zweiten Schicht liegt vorzugsweise zwischen 2 und 40 /um. Sie setzt sich aus 30 bis 60 Gewichtsprozent, einer oder mehrerer ladungsträgertransportierenden Verbindungen, 65 bis 35 Gewichtsprozent an einem oder mehreren hierfür üblichen Bindemitteln, 0,1 bis 4 Gewichtsprozent an Zusätzen, die die mechanischen Eigenschaften verbessern und gegebenenfalls bis zu 5 Gewichtsprozent an sensibilisierenden oder aktivierenden Verbindungen zusammen. Der Gießprozeß erfolgt aus einem niedrigsiedenden Lösungsmittel.The transparent second layer is also arranged over the first layer by casting from a solution. The thickness of the second layer is preferably between 2 and 40 / um. It consists of 30 to 60 percent by weight, one or more charge carrier transporting compounds, 65 to 35 percent by weight of one or more binders customary for this, 0.1 to 4 percent by weight of additives that improve the mechanical properties and optionally up to 5 percent by weight of sensitizing or activating connections together. The casting process is carried out from a low-boiling solvent.
Zwischen der ersten und der zweiten Schicht ist gegebenenfalls eine Sperrschicht von etwa 0,05 bis 1,5 /um, vorzugsweise 0,1 bis 0,5 /um angeordnet, während es je nach vorgesehener Verwendung des elektrophotographischen Aufzeichnungsmaterials angemessen sein kann, eine als Deck- und Schutzschicht wirkende inaktive Schicht auf die Ladungsträger transportierende Schicht aufzubringen.A barrier layer of about 0.05 to 1.5 / µm, preferably 0.1 to 0.5 / µm is optionally arranged between the first and the second layer, while depending on the intended use of the electrophotographic recording material it may be appropriate to use a To apply the top and protective layer acting inactive layer on the charge transport layer.
Als elektrisch leitfähiges Trägermaterial sind Aluminiumfolien, Aluminiumbleche, Nickelbleche, oder mit Aluminium, Zinn, Blei, Wismut oder ähnlichen Metallen bedampfte Kunststoffolien, vorzugsweise Polyesterfolien geeignet. Die Auswahl wird durch das Einsatzgebiet des elektrophotographischen Elements bestimmt.Aluminum foils, aluminum foils, nickel foils or plastic foils coated with aluminum, tin, lead, bismuth or similar metals, preferably polyester foils, are suitable as the electrically conductive carrier material. The selection is determined by the area of application of the electrophotographic element.
Die Sperrschichten zwischen dem leitfähigen Trägermaterial und der ersten Schicht oder zwischen derselben und der zweiten Schicht bestehen üblicherweise aus Metalloxidschichten, z.B. Aluminiumoxidschichten, Polymeren, wie z.B. Polyamid, Polyvinylalkohol, Polyacrylate, Polystyrol oder ähnliche Systeme. Gegebenenfalls kann aber auch das Bindemittel der ersten Schicht gleichzeitig als Sperrschichtmaterial dienen.The barrier layers between the conductive substrate and the first layer or between the same and the second layer usually consist of metal oxide layers, e.g. Alumina layers, polymers such as e.g. Polyamide, polyvinyl alcohol, polyacrylates, polystyrene or similar systems. Optionally, however, the binder of the first layer can also serve as a barrier layer material at the same time.
Claims (19)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3110953 | 1981-03-20 | ||
DE19813110953 DE3110953A1 (en) | 1981-03-20 | 1981-03-20 | ELECTROPHOTOGRAPHIC RECORDING MATERIAL |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0061094A1 true EP0061094A1 (en) | 1982-09-29 |
EP0061094B1 EP0061094B1 (en) | 1985-10-02 |
Family
ID=6127837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82102008A Expired EP0061094B1 (en) | 1981-03-20 | 1982-03-12 | Electrophotographic recording material |
Country Status (5)
Country | Link |
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US (1) | US4481272A (en) |
EP (1) | EP0061094B1 (en) |
JP (1) | JPS57181552A (en) |
DE (2) | DE3110953A1 (en) |
DK (1) | DK162126C (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0318759A1 (en) * | 1987-11-28 | 1989-06-07 | BASF Aktiengesellschaft | Multilayered electrophotographical recording material |
US5112725A (en) * | 1986-09-06 | 1992-05-12 | Basf Aktiengesellschaft | Preparation of recording layers and their use for the production of flexographic printing plates |
EP0537808A1 (en) * | 1991-09-24 | 1993-04-21 | Agfa-Gevaert N.V. | Photosensitive recording material |
EP0568497A1 (en) * | 1992-04-30 | 1993-11-03 | Ciba-Geigy Ag | Chromogene methylenepyrrolins |
EP0684289A1 (en) | 1994-05-25 | 1995-11-29 | Bayer Ag | Thiazol isoindolenine dyes |
EP0686673A1 (en) * | 1994-06-07 | 1995-12-13 | Hoechst Aktiengesellschaft | Isoindolin pigments |
CN107024834A (en) * | 2016-02-01 | 2017-08-08 | 住友化学株式会社 | Compound and coloured composition |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0347960B1 (en) * | 1988-06-23 | 1994-07-06 | Agfa-Gevaert N.V. | Photosensitive recording material suited for use in electrophotography |
CN107586469B (en) * | 2016-07-07 | 2021-04-06 | 住友化学株式会社 | Pigment composition, coloring composition, and coloring curable composition |
CN114149431B (en) * | 2021-07-29 | 2023-08-25 | 广东工业大学 | Narrow-emission quinacridone derivative as well as preparation method and application thereof |
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- 1982-03-12 DE DE8282102008T patent/DE3266612D1/en not_active Expired
- 1982-03-19 JP JP57043024A patent/JPS57181552A/en active Granted
- 1982-03-19 DK DK123882A patent/DK162126C/en not_active IP Right Cessation
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Cited By (10)
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US5112725A (en) * | 1986-09-06 | 1992-05-12 | Basf Aktiengesellschaft | Preparation of recording layers and their use for the production of flexographic printing plates |
EP0318759A1 (en) * | 1987-11-28 | 1989-06-07 | BASF Aktiengesellschaft | Multilayered electrophotographical recording material |
EP0537808A1 (en) * | 1991-09-24 | 1993-04-21 | Agfa-Gevaert N.V. | Photosensitive recording material |
EP0568497A1 (en) * | 1992-04-30 | 1993-11-03 | Ciba-Geigy Ag | Chromogene methylenepyrrolins |
US5387694A (en) * | 1992-04-30 | 1995-02-07 | Ciba-Geigy Corporation | Chromogenic methylenepyrrolines |
EP0684289A1 (en) | 1994-05-25 | 1995-11-29 | Bayer Ag | Thiazol isoindolenine dyes |
US5646290A (en) * | 1994-05-25 | 1997-07-08 | Bayer Aktiengesellschaft | Thiazolylisoindolenine dyestuffs |
EP0686673A1 (en) * | 1994-06-07 | 1995-12-13 | Hoechst Aktiengesellschaft | Isoindolin pigments |
CN107024834A (en) * | 2016-02-01 | 2017-08-08 | 住友化学株式会社 | Compound and coloured composition |
CN107024834B (en) * | 2016-02-01 | 2021-11-23 | 住友化学株式会社 | Compound and coloring composition |
Also Published As
Publication number | Publication date |
---|---|
DK123882A (en) | 1982-09-21 |
DK162126B (en) | 1991-09-16 |
DE3266612D1 (en) | 1985-11-07 |
DK162126C (en) | 1992-02-17 |
DE3110953A1 (en) | 1982-09-30 |
JPH0221576B2 (en) | 1990-05-15 |
US4481272A (en) | 1984-11-06 |
JPS57181552A (en) | 1982-11-09 |
EP0061094B1 (en) | 1985-10-02 |
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