Electrophotographic image bearing material
Abstract
This invention describes an image carrier material for electrophotographic processes which provides images similar to photographs and is built up from at least five layers. A base paper is coated on both sides with thermoplastic materials and in addition bears an antistatic layer on the reverse side and a receiving layer for the toner image on the front side.
Term
Term ended
Expired 8 September 2015, 11 years ago.
- Priority
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- Today
8 claims: 8 independent, 0 dependent
- 1An image carrier material for electrophotographic processes containing a base paper as core material having applied on both sides of the base paper layers on a thermoplastic resin and an antistatic layer of one of the thermoplastic layers, characterized in that on the resin layer not covered with the antistatic layer, a receiving layer for the toner image is provided and that the receiving layer contains a polymer with a interfacial tension of > 32 mN/m and a film formation temperature according to DIN 53787 of < 100°C. Bildträgermaterial für elektrofotografische Verfahren, das ein Basispapier als Kernmaterial mit beidseitig auf dem Basispapier angeordneten Kunststoffschichten aus Thermoplasten und eine Antistatikschicht auf einer der Kunststoffschichten enthält, dadurch gekennzeichnet, daß auf der nicht mit einer Antistatikschicht versehenen Kunststoffschicht eine Empfangsschicht für das Tonerbild angeordnet ist und die Empfangsschicht ein Polymer mit einer Grenzflächenspannung von > 32 mN/m und einer Filmbildungstemperatur nach DIN 53787 von < 100°C enthält. Support d'image pour procédé électrophotographique, qui contient un papier de base comme matériau central, avec des couches en une matière thermoplastique, disposées sur les deux faces du papier de base, et une couche antistatique sur l'une des couches de matière plastique, caractérisé en ce que sur la couche de matière plastique non munie d'une couche antistatique, est disposée une couche réceptrice pour l'image au toner et en ce que la couche réceptrice contient un polymère avec une tension superficielle > 32 mN/m et une température de formation de film d'après DIN 53 787 < 100°C.
- 2An image carrier material according to claim 1, characterized in that the polymer of the receiving layer is polystyrene, polyacrylate, polyalkyl (meth)acrylate, ionomer, polyvinylidene chloride, cellulose ester and/or copolymer of two or more of the monomers butadiene, styrene, acrylonitrile, acrylic ester or alkyl acrylic ester. Bildträgermaterial nach Anspruch 1, dadurch gekennzeichnet, daß das Polymer der Empfangsschicht Polystyrol, Polyacrylat, Polyalkyl(meth)acrylat, Ionomer, Polyvinylidenchlorid, Celluloseester und/oder Copolymer aus zwei oder mehreren der Monomere Butadien, Styrol, Acrylnitril, Acrylester, Alkylacrylester ist. Support d'image suivant la revendication 1, caractérisé en ce que le polymère de la couche réceptrice est un polystyrène, un polyacrylate, un poly[(méth)acrylate d'alcoyle], un ionomère, un poly(chlorure de vinylidène), un ester de cellulose et/ou un copolymère de deux ou plusieurs parmi les monomères butadiène, styrène, acrylonitrile, acrylate, acrylate d'alcoyle.
- 3An image carrier material according to claim 1, characterized in that the receiving layer additionally contains finely divided or colloidal silica. Bildträgermaterial nach Anspruch 1, dadurch gekennzeichnet, daß die Empfangsschicht zusätzlich feinteilige oder kolloidale Kieselsäure enthält. Support d'image suivant la revendication 1, caractérisé en ce que la couche réceptrice contient en outre, de l'acide silicique fin ou colloïdal.
- 4An image carrier material according to claim 1, characterized in that the thermoplastic materials of the plastic layers are polyolefine, polystyrene, polycarbonate, polyvinyl derivate, polyacrylate, polyurethane and/or copolymer of two or more of the monomers ethylene, propylene, other α-olefins, vinyl acetate or (meth)acrylic acid ester. Bildträgermaterial nach Anspruch 1, dadurch gekennzeichnet, daß die Thermoplaste der Kunststoffschichten Polyolefin, Polystyrol, Polycarbonat, Polyvinylderivat, Polyacrylat, Polyurethan und/oder Copolymer aus zwei oder mehreren der Monomere Ethylen, Propylen, andere α-Olefine, Vinylacetat, (Meth)Acrylsäureester ist. Support d'image suivant la revendication 1, caractérisé en ce que le thermoplastique des couches plastiques est une polyoléfine, un polystyrène, un polycarbonate, un poly(dérivé de vinyle), un polyacrylate, un polyuréthanne et/ou un copolymère de deux ou plusieurs parmi les monomères éthylène, propylène, autre α-oléfine, acétate de vinyle, (méth)acrylate.
- 5An image carrier material according to claim 1, characterized in that the plastic layer which is situated under the receiving layer additionally contains white pigments such as titanium dioxide and/or calcium carbonate, optical brighteners and/or toning dyes, and antioxidants. Bildträgermaterial nach Anspruch 1, dadurch gekennzeichnet, daß die Kunststoffschicht, die sich unter der Empfangsschicht befindet, zusätzlich Weißpigmente wie Titandioxid und/oder Calciumcarbonat enthält, optische Aufheller und/oder Nuancierfarbstoffe sowie Antioxidantien. Support d'image suivant la revendication 1, caractérisé en ce que la couche plastique, qui se trouve sous la couche réceptrice, contient en outre un pigment blanc comme le dioxyde de titane et/ou le carbonate de calcium, un agent de blanchiment optique et/ou un colorant de nuançage, ainsi que des antioxydants.
- 6An image material according to claim 1, characterized in that the base paper has an additional size press coating. Bildträgermaterial nach Anspruch 1, dadurch gekennzeichnet, daß das Basispapier eine zusätzliche Leimpressenbeschichtung hat. Support d'image suivant la revendication 1, caractérisé en ce que le papier de base a un revêtement supplémentaire d'encollage
- 7An image carrier material according to claim 1, characterized in that the antistatic layer contains inorganic salts, alkali salts of organic carboxylic acids or sulfonic acids, or metal oxides. Bildträgermaterial nach Anspruch 1, dadurch gekennzeichnet, daß die Antistatikschicht anorganische Salze, Alkalisalze von organischen Carbonsäuren oder Sulfonsäuren oder Metalloxide enthält. Support d'image suivant la revendication 1, caractérisé en ce que la couche antistatique contient des sels inorganiques, des sels alcalins d'acides carboxyliques ou d'acides sulfoniques organiques ou des oxydes métalliques.
- 8An image carrier material according to claim 1, characterized in that the antistatic layer additionally contains silicas. Bildträgermaterial nach Anspruch 1, dadurch gekennzeichnet, daß die Antistatikschicht zusätzlich Kieselsäuren enthält. Support d'image suivant la revendication 1, caractérisé en ce que la couche antistatique contient en outre, de l'acide silicique.
Independent claims8
51 paragraphs, as filed
The invention describes an image carrier material for electrophotographic process.
Electrophotographic processes produce a template on a semiconductor material of a latent electrostatic image, that is made or developed visualized by toners. The End product may be the semiconductor material itself either (For example, zinc oxide paper) or an image carrier material to which the toner image of the semiconductor material (eg, selenium drum) Gets transferred. The latter method is now considered copying process in all office complexes prior art.
In recent years, more and more so-called color copiers have enforced, but according to the same procedure, with colored toners work.
While reproduced with the usual office copiers mainly texts are, for the low-cost carrier material (eg "Plain paper") is sufficient to be the color copiers mainly reproduced images, for higher image carriers be overwhelmed.
The US 51 12 717 patent describes an image carrier color electrophotographic process, in which surface after Tonerbebilderung a texture is impressed to the image to convey a photographic paper-like surface. The image carrier material consists of a core or Base paper having a front side and a back coat, both made of plastics. The front coating is preferably polystyrene, the backcoat layer is preferably polyolefin. The image support material of this patent has to both sides pure plastic layers and can the Consumer do not convey the feeling that it is a Photo paper conveys. There him missing properties as high whiteness, antistatic, writability the back.
EP 0496037 A1 describes a coating composition for the back of a photographic layer carrier. These Backcoat is printability with thermal printers with low dirt pick-up and discoloration by developing baths, good abrasion resistance and bath resistance guarantee and good antistatic properties.
The object of the invention is to provide an image carrier material for to provide electrophotographic method available, which has the character of a photographic paper and a Image quality that comes close to a photograph.
This object is achieved by an image carrier for electrophotographic process, the base paper arranged as a core material having both sides of the base paper Plastic layers of thermoplastics and a containing antistatic layer on one of the plastic layers, where on the not with an antistatic layer provided plastic layer a receiving layer for the Toner image is arranged and the reception layer comprises a polymer with a interfacial tension of> 32 mN / m and a film formation temperature according to DIN 53787 of <100 ° C contains.
The base paper can basically every paper used be prepared from bleached cellulose.
The base papers can white pigments such as titanium dioxide or calcium carbonate, they can be neutral or alkaline eg by means of reactive sizing agents such Alkylketendimern glued or derivatives of Dialkylbernsteinsäureanhydrids be, they can be glued acidic, eg with resin size (Kopophonium-resin size) and aluminum sulfate, they can wet strength be equipped, for example with melamine-formaldehyde resins or Polyamidaminepichlorhydrinharzen, and / or they may additional Leimpressenbeschichtungen wear. The both sides or applied unilaterally by size press in the paper machine Coatings serve, for example, the further Solidification of the fiber structure or give the paper surfaces Property improvements such as higher brightness by Addition of eg optical brighteners, or antistatic by Addition of for example alkali salts or improved adhesion of later layers to be applied. Liability or Improved gefügeverfestigende additives are polymers such as starch, cellulose derivatives, Alginates, polyvinyl alcohol, polyacrylate, water-soluble polyacrylic acids, styrene copolymers and like compounds. All these quality-improving additives to the stock are for use in the invention, however, not mandatory.
The base paper described above is on both sides with thermoplastic plastic layers provided. These thermoplastics, preferably by a melt extrusion coating be applied, preferably polyolefins such as polyethylene, polypropylene, or olefin copolymers, for example, composed of ethylene with other α-olefins or with vinyl acetate or acrylic acid esters with (meth).
Polyethylene LDPE (low density polyethylene), HDPE and LLDPE (high density polyethylene) (linear polyethylene understood low density). As inventive However, thermoplastics are also polystyrene, polycarbonate, Polyvinyl and polyacrylic compounds and polyurethanes suitable.
The coating weight of the plastic coatings on both Side of the base approximately equal, even if the Thermoplastics are the same. This guarantees a good flatness of the final product. When different thermoplastics Front and back have different tensile stresses by matched different coating weight be compensated.
While the rear applied plastic layer as Such meets the requirements, the plastic layer is on the front to good optical properties adjusted, ie, it has a high light reflection, high brightness, and high whiteness. You can also by the addition of shading dyes be adapted aesthetic or fashionable color preferences. High light reflectance and high brightness are by admixture white pigments, preferably titanium dioxide, and reaches optical brighteners. The amount of white pigments is for processing reasons usually between 10 wt.% And 25 wt.%, It can but up to 50 wt.% to accomplish.
The receiving layer on the front, which on the Plastic layer, contains as an essential component a polymer which is to be transmitted, a good adhesion of the Toner image guaranteed. Studies have shown that Polymers with a interfacial tension of> 32 mN / m and a Film formation temperature according to DIN 53787 of <100 ° C particularly are well suited. Such polymers are polystyrenes, Polyacrylates, polyalkyl, ionomers, polyvinylidene, Cellulose esters and copolymers of two or more of the monomers butadiene, styrene, acrylonitrile, acrylic esters, Alkyl acrylic.
In addition, the receiving layers may advantageously be used as anti-blocking agent finely divided silicas such as colloidal aluminum modified contain silica or shading dyes, optical brighteners or wetting agents or defoamers. For the Operability of the image support material, these additives but not required.
The antistatic layer on the back, on the Plastic layer, contains in a binder as Antistatic agent, inorganic salts, preferably alkali metal salts or organic sulfonic acids or carboxylic acids or alkali metal salts thereof or metal oxides. The antistatic effect is, measured as surface resistance of the layer between values 10<sup>9</sup> Ω / cm and 10<sup>13</sup> Ω / cm own. In addition, this Antistatic layer by selecting the binder and other additives good printability and writability are awarded. For the printability with non-aqueous or non-polar printing inks must the binder also have hydrophobic character; it come copolymers of two or more of the monomers selected from butadiene, styrene, Acrylonitrile, acrylic acid esters and vinyl acetate are suitable. For a writability with pencils are added silicas, which provide the necessary abrasion.
As application units for receiving layers and antistatic layers are all typical systems via Scoop roll, anilox rollers or nozzles, the coating composition antragen directly or indirectly to the material to be coated and dosed with squeegees, scraper or air knife.
The individual layers of the image carrier material according to the invention following basis weight ranges:<tables><table><tgroup cols="3"><tbody><row><entry align="right">1</entry><entry align="left">receiving layer</entry><entry align="right">0.1 g / m<sup>2</sup> to 1 g / m<sup>2</sup></entry></row><row><entry align="right">2</entry><entry align="left">Plastic layer</entry><entry align="right">10 g / m<sup>2</sup> to 50 g / m<sup>2</sup></entry></row><row><entry align="right">3</entry><entry align="left">base paper</entry><entry align="right">60 g / m<sup>2</sup> to 200 g / m<sup>2</sup></entry></row><row><entry align="right">4</entry><entry align="left">Plastic layer</entry><entry align="right">10 g / m<sup>2</sup> to 50 g / m<sup>2</sup></entry></row><row><entry align="right">5</entry><entry align="left">Antistatic layer</entry><entry align="right">0.05 g / m<sup>2</sup> to 2 g / m<sup>2</sup></entry></row></tbody></tgroup></table></tables>
Through the construction of the image carrier material according to the invention the following properties are achieved or improved:
The receptive layer for receiving the toner image from the Semiconductor material has a good temperature resistance and high toner receiving ability, so that on the Semiconductor material only a little residual toner remains. After fixation is a very good toner adhesion reached.
The plastics layer on the face are the later Image good substrate whiteness and brightness. It paves the unevenness of the surface of base paper and gives the whole front coating a certain compressibility. Thereby, an improved more complete contact between transfer paper and Toner image obtained on the semiconductor material, thereby the toner transfer is complete, no missing parts (Missing dots) appear in the image and the image sharpness is improved.
The base paper is the general substrate of Image support material, there are the necessary strength and stiffness.
The plastic layer on the back gives the composite a very good flatness and seals the porous base paper decreases so that the copier between toner transfer and toner fusing the paper guide to the station applied vacuum remains fully effective and characterized exact paper guide, an optimal plan entertainment of the paper and intimate contact between Image support material and heating plates or heating roller is guaranteed.
In connection with the plastic layer on the front the base paper is sealed on both sides. This keeps the moisture content of base paper relatively constant, even with strongly fluctuating ambient humidity. The paper moisture of not with plastics coated paper has a very large influence on the electrical surface and volume resistivity this paper, so that with fluctuating ambient humidity also fluctuating quality image transfer would occur.
The antistatic layer on the back side improves the Stackability of the image carrier material, ie the Removing single sheets of paper from a stack and the Disconnection of individual sheets of paper successively happens trouble-free, because an electrostatic charge is avoided. The antistatic treatment of Rear side of the image support material must not, however, to be pronounced as it would otherwise influence Toner transfer and toner adhesion on the front would take.
The additional adjustable printability and Writability is a possibility for identifying or, for information entries.
The entire image support material thus constructed permits a high-quality imaging and has the Character of a photographic paper.
This structure also enables the production of high-gloss images by subsequent treatment of the finished Image by pressure and temperature. All it takes is for example an ironed or run through a high-gloss heat roller at about 10bar pressure and 180 ° C temperature. This Effect is not possible without thermoplastic intermediate layer.
The following examples illustrate image carrier materials thus constructed.
Examples
A mixture of 70 wt.% Bleached hardwood kraft pulp was at a consistency of 4% to a freeness ground of 35 ° SR.
The pulp suspension was then following the sizing agent added: <sl><li>0.5 wt.% Cationic starch</li><li>1.0 wt.% Amphoteric polyacrylamide</li><li>0.6 wt.% Alkylketene</li><li>1.0 wt.% Polyamide-polyamine-epichlorohydrin</li><li>0.1.% Epoxidized fatty acid amide</li></sl>
On a Fourdrinier machine with glazing unit has a Base paper of 170 g / m<sup>2</sup> generated.
This base paper was in a tandem extruder with the following two layers of plastic coated with each time after a corona pretreatment first the back and then the front side were coated.
Back layer:<sl><li>70 wt.% HDPE (g = 0.950 g / cm<sup>3</sup>)</li><li>30 wt.% LDPE (g = 0.924 g / cm<sup>3</sup>)</li></sl>
Obverse layer:<sl><li>58.0 wt.% LDPE (g = 0.924 g / cm<sup>3</sup>)</li><li>27.73 wt.% LLDPE (g = 0.935 g / cm<sup>3</sup>)</li><li>17.73 wt.% Titanium dioxide, rutile</li><li>0.2 wt.% Of ultramarine blue</li><li>0.2 wt.% Antioxidant</li><li>0.07 wt.% Metal stearate</li><li>0.07 wt.% Cobalt violet</li></sl>
The extrusion coating was performed at 110 m / min. machine speed and melting temperature of 290 ° C. The coating weights were<sl><li>26 g / m<sup>2</sup> for the back layer and</li><li>30 g / m<sup>2</sup> for the front layer.</li></sl>
In a coater the following antistatic layers were and then generates the following receiving layers, each time after a preceding corona treatment of corresponding plastic layer. The respective aqueous were coating compositions with a scoop roller to the to plotted coated material, metered with a metering rod and dried in a hot air duct at 90 ° C air temperature. <tables><table><tgroup cols="2"><tbody><row><entry align="center">Antistatic layer A1</entry><entry align="center">%. Weight t</entry></row><row><entry align="left">carboxylated styrene-acrylic ester copolymer</entry><entry align="center">43.5</entry></row><row><entry align="left">carboxylated styrene-butyl acrylate copolymer</entry><entry align="center">10.4</entry></row><row><entry align="left">Metal oxide, acicular titanium dioxide, surface-treated with tin oxide and antimony-doped</entry><entry align="center">43.5</entry></row><row><entry align="left">wetting agent</entry><entry align="center">1.7</entry></row><row><entry align="left">trifunctional aziridine</entry><entry align="center">0.9</entry></row></tbody></tgroup></table></tables><tables><table><tgroup cols="2"><tbody><row><entry align="center">Antistatic layer A2</entry><entry align="center">. Wt%</entry></row><row><entry align="left">Styrene-butadiene copolymer</entry><entry align="center">64.6</entry></row><row><entry align="left">Silica 3-6 micron particle size</entry><entry align="center">7.8</entry></row><row><entry align="left">Colloidal aluminum modified silica</entry><entry align="center">20.7</entry></row><row><entry align="left">Polystyrenesulfonic acid sodium salt</entry><entry align="center">5.2</entry></row><row><entry align="left">wetting agent</entry><entry align="center">1.7</entry></row></tbody></tgroup></table></tables><tables><table><tgroup cols="2"><tbody><row><entry align="center">Receiving layer E 1</entry><entry align="center">. Wt%</entry></row><row><entry align="left">carboxylated styrene-butadiene copolymer</entry><entry align="right">100</entry></row></tbody></tgroup></table></tables><tables><table><tgroup cols="2"><tbody><row><entry align="center">Receiving layer E2</entry><entry align="center">. Wt%</entry></row><row><entry align="left">Acrylic acid ester-vinyl acetate-vinyl chloride copolymer</entry><entry align="center">45.4</entry></row><row><entry align="left">colloidal aluminum modified silica</entry><entry align="center">27.3</entry></row><row><entry align="left">fumed silica</entry><entry align="center">27.3</entry></row></tbody></tgroup></table></tables>
The substrate coated with the two layers of plastic paper was mixed with various combinations of receiving layers and antistatic layers provided and led to the following examples:<tables><table><tgroup cols="5"><tbody><row><entry namest="1" align="center">example</entry><entry namest="2" nameend="3" align="center">Antistatic layer g / m<sup>2</sup></entry><entry namest="4" nameend="5" align="center">Receiving layer g / m<sup>2</sup></entry></row><row><entry align="center" /><entry align="right">A1</entry><entry align="right">A2</entry><entry align="left">E1</entry><entry align="left">E2</entry></row><row><entry align="right">1</entry><entry align="center">0.2</entry><entry align="right" /><entry align="center">0.4</entry></row><row><entry align="right">2</entry><entry align="center">0.2</entry><entry align="right" /><entry align="right" /><entry align="center">0.9</entry></row><row><entry align="right">3</entry><entry align="right" /><entry align="center">0.7</entry><entry align="center">0.4</entry></row><row><entry align="right">4</entry><entry align="right" /><entry align="center">0.7</entry><entry align="right" /><entry align="center">0.9</entry></row></tbody></tgroup></table></tables>
As <u>Comparative Examples</u> were used:<dl tsize="3"><dt>V1</dt><dd>the above-described both sides with plastics coated paper <u>without</u> Receiving layer and <u>without</u>Antistatic layer.</dd><dt>V2</dt><dd>A commercially available "plain paper", ie, a paper, which is used for text copies.</dd></dl>
Test Methods
<b>Photo Character:</b> The imaged final product was independent of the image quality judged by whether it subjective after Feeling when touching or grasping or manipulating the examiner gives the feeling of a photographic Image to hold in your hand.
<b>writability:</b> With a date stamp, a pen and a pencil hardness of HB was the back the fine end product in. The assessment carried out as an average of the three individual results.
<b>Focus:</b> The final image was compared with the Original assessed visually.
<b>Collection from the stack:</b> The collection of individual sheets from the stack in the copying machine was monitored for faults.
<b>Scratch resistance:</b> The final image was a rake pulled through the 6 individual prongs differently carry heavy weights (up to 100 g). The drawing speed was 0.8 cm / s.
The assessment of all 5 Tests carried out according to the marks "Good - medium - poor".
test results
<tables><table><tgroup cols="6"><tbody><row><entry align="center" /><entry align="center">Photo character</entry><entry align="center">describability</entry><entry align="center">definition</entry><entry align="center">collection v.Stapel</entry><entry align="center">scratch resistance ability</entry></row><row><entry align="right">Example 1</entry><entry align="center">Good</entry><entry align="center">Good</entry><entry align="center">Good</entry><entry align="center">Good</entry><entry align="center">Good</entry></row><row><entry align="right">2</entry><entry align="center">Good</entry><entry align="center">Good</entry><entry align="center">Good</entry><entry align="center">Good</entry><entry align="center">Good</entry></row><row><entry align="right">3</entry><entry align="center">Good</entry><entry align="center">Good</entry><entry align="center">Good</entry><entry align="center">Good</entry><entry align="center">Good</entry></row><row><entry align="right">4</entry><entry align="center">Good</entry><entry align="center">Good</entry><entry align="center">Good</entry><entry align="center">Good</entry><entry align="center">Good</entry></row><row><entry align="right">comparison</entry></row><row><entry align="right">V1</entry><entry align="center">medium</entry><entry align="center">badly</entry><entry align="center">medium</entry><entry align="center">badly</entry><entry align="center">badly</entry></row><row><entry align="right">V2</entry><entry align="center">badly</entry><entry align="center">Good</entry><entry align="center">badly</entry><entry align="center">Good</entry><entry align="center">Good</entry></row></tbody></tgroup></table></tables>
The good results of Examples 1 to 4 were also in other Experiments confirmed according to the invention, in which, for example an acidic sizing of the base paper, an additional Leimpressenstrich on the base paper, others mentioned in the text Thermoplastics or other receiving or antistatic layers were elected.
17 members in 11 offices
Priority claims5
| Document | Office | Kind | Date |
|---|---|---|---|
| 4435350 | Germany | A | |
| 4435350 | Germany | A | |
| 4435350 | Germany | – | |
| 4435350 | – | – | – |
| DE19944435350 | – | – | – |
Members17
| Document | Office | Kind | |
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| DE4435350A1 | Germany | A1 | |
| AU3061795A | Australia | A | |
| EP0713151A1 | European Patent Office (EPO) | A1 | |
| JPH08211645A | Japan | A | |
| US5658677A | United States of America | A | |
| AU688081B2 | Australia | B2 | |
| DE4435350C2 | Germany | C2 | |
| EP0713151B1This record | European Patent Office (EPO) | B1 | |
| AT202219T | Austria | T | |
| ATE202219T1 | Austria | T1 | |
| DE59509336D1 | Germany | D1 | |
| DK0713151T3 | Denmark | T3 | |
| ES2159590T3 | Spain | T3 | |
| PT713151E | Portugal | E | |
| RO117950B1 | Romania | B1 | |
| CA2158321C | Canada | C |
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| European patent in force as of 2002-01-01IF02 | IF02 | GB | |
| Translation is availableAVAILABILITY OF NATIONAL TRANSLATIONSC4A | SC4A | PT | |
| Fr: translation filedET | ET | EP | |
| Definitive protectionFG2A | FG2A | ES | |
| Ep patent with danish claimsT3 | T3 | DK | |
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Numbers
- Publication
- 0713151
- Publication, DOCDB
- 0713151
- Publication, EPODOC
- EP0713151
- Application
- 95114077
- Application, DOCDB
- 95114077
- Application, EPODOC
- EP19950114077
Titles3
- German
- Bildträgermaterial für elektrofotografische Verfahren
- English
- Electrophotographic image bearing material
- French
- Support d'image électrophotographique
Classification
- CPC, 8
- G03G7/0026
- G03G7/0013
- G03G7/0033
- G03G7/004
- G03G7/0053
- G03G7/0086
- Y10T428/24802
- Y10T428/31993
- IPC, 2
- G03C1 76
- G03G7 00
Designated states13
- Contracting states, 13
- Austria
- Belgium
- Switzerland
- Germany
- Denmark
- Spain
- France
- United Kingdom
- Italy
- Liechtenstein
- Netherlands (Kingdom of the)
- Portugal
- Sweden