EP0516505A1 - Paper for application of a coloured design to a substrate - Google Patents
Paper for application of a coloured design to a substrate Download PDFInfo
- Publication number
- EP0516505A1 EP0516505A1 EP92401367A EP92401367A EP0516505A1 EP 0516505 A1 EP0516505 A1 EP 0516505A1 EP 92401367 A EP92401367 A EP 92401367A EP 92401367 A EP92401367 A EP 92401367A EP 0516505 A1 EP0516505 A1 EP 0516505A1
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- EP
- European Patent Office
- Prior art keywords
- flexible support
- printing
- support
- seconds
- flexible
- Prior art date
- 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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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
- B41M5/035—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
- B41M5/035—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic
- B41M5/0355—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic characterised by the macromolecular coating or impregnation used to obtain dye receptive properties
Definitions
- the invention relates to a flexible printable support usable in particular as a flexible auxiliary support for applying by transfer a colored decoration on a receiving substrate; this substrate may be of a diverse nature (mineral, metallic, natural, synthetic, etc.), for example made of thermoplastic synthetic material.
- the substrate can also be a layer of synthetic material applied in the form of a varnish.
- Document EP-A-0 014 615 filed by ESSILOR, describes a method consisting in applying a flexible support (for example paper) comprising an impression produced from sublimable inks, on a spectacle frame placed in a vacuum chamber. It is heated, while maintaining the vacuum, which has the effect that the flexible support intimately follows the shape of the frame of the glasses.
- a flexible support for example paper
- the flexible support intimately follows the shape of the frame of the glasses.
- the printed support must be breathable. This porosity is necessary to allow a vacuum to be created between the printed support and the substrate to be decorated, thus avoiding the formation of folds in the support and eliminating gaseous inclusions between the printed support and the substrate before and during the sublimation operation.
- a problem which therefore arises for such a method is to manufacture a flexible support, for example a paper, which satisfactorily receives the impression constituted by sublimable inks which must be transferred to the substrate.
- Another problem which arises is to manufacture a flexible printable support in particular by an offset process with sublimable inks.
- Another problem which arises is to manufacture a flexible printable support in particular by a gravure process, with sublimable inks.
- a fourth problem which arises is to manufacture a flexible printable support either by an offset process or by a heliographic process, with sublimable inks adapted to each of the processes; this is to facilitate the transition from one process to another depending on the unit areas and the volumes of paper to be printed.
- a fifth problem which arises is to have a flexible support the constituents of which do not interfere during the transfer operation, either by action on the sublimable inks, or by parasitic gassing during sublimation.
- Another problem is also to have a flexible support which is sufficiently resistant during the plating of the sheet, in particular on the edges and the corners of the contact zones.
- Another problem which arises is to have good contact between the flexible support and the receiving substrate by creating an electrostatic charge either on the support, or on the substrate, or on both.
- Another problem which arises is to have a flexible support having the property of accepting and retaining this charge without adverse side effects.
- the invention therefore aims to provide such a flexible printable support which makes it possible to solve the problems mentioned above.
- the invention provides a flexible printable support, intended to be used for carrying out a substrate printing process by hot transfer of a print of sublimable inks, with the creation of a vacuum between the flexible support and the substrate.
- the flexible support is both an energy receiver and an energy transmitter.
- the flexible support will receive the energy supplied by heating by infrared radiation, limiting as much as possible the reflection effects which could be generating energy losses and heterogeneous distribution on the treated surface.
- the energy supplied by heating by infrared radiation on the back of the flexible support is retransmitted on its opposite face, namely the face which comprises printing by sublimable ink.
- the flexible support is such that its constituents are inert with respect to the sublimable inks used.
- the flexible support according to the invention is such that its constituents do not have harmful effects during the sublimation operation.
- the flexible support according to the invention is such that its face intended to receive the impression is smooth, namely the level of smoothness expressed in seconds BEKK is greater than 80.
- the measurement of the smoothness BEKK is carried out according to ISO standard 5627.
- the flexible support according to the invention is also such that its constituents allow treatment of electrostatic charges.
- the flexible support according to the invention is also characterized in that its weight, expressed in grams per square meter, is between approximately 30 and approximately 120 g / m2, preferably between 50 and 70 g / m2.
- the flexible support according to the invention is also characterized by the fact that its air permeability, expressed in Gurley seconds according to ISO standard 5636-5, is between approximately 40 seconds and approximately 200 seconds.
- Another characteristic of the flexible support according to the invention is that its mechanical resistance, expressed in bursting strength according to the Mullen test is greater than or equal to about 250 kPa.
- the Mullen test is defined by ISO standard 2758.
- the flexible support according to the invention is characterized in that its rougher face comprises a layer of non-conductive black pigments, deposited by heliographic printing, energy sensors, for example generated by infrared rays.
- This type of printing makes it possible on the one hand to regulate the deposited layer and on the other hand to affect the air permeability of the support as little as possible.
- the ink for black printing is an ink in a nonaqueous medium in order to keep a good solid color of the paper either during the subsequent printing by the sublimable inks, or on the finished product.
- An ink is preferably used in a methlethylketone medium.
- the black printing ink should not alter the air permeability of the paper, it is preferable that the layer printed with this ink is not film-forming, that is to say that it does not completely cover the surface of the paper.
- a fibrous dispersion of bleached cellulose comprising approximately one third of long resinous fibers and two thirds of short fibers of a mixture for half of eucalyptus fibers and beech fibers, and refined to 50 degrees Sho ⁇ pper, after addition of 25% of precipitated calcium carbonate, for example the product Hydrocarb 90 from the company OMYA.
- This dispersion is introduced at the head of the case of a paper table machine of the Fourdrinier type, it is wrung and dried. A sheet of paper is obtained which is smoothed using a calender on or off the machine.
- a sheet is obtained having the following characteristics: Weight per square meter: 70 Thickness in micrometers: 75 BEKK smoothing in seconds 120 Air permeability in seconds: 40 Bursting resistance in kPa: 300
- the sheet is printed by a heliographic process using suitable sublimable inks.
- the impression is good and allows in particular to reproduce decorative effects used in interior decoration, such as faux wood for furniture, natural stone effect, abstract and fancy decorations.
- a transfer is carried out on a thermoplastic polymer plate according to the technique described in application EP-A-90 108 66.7.
- a printed plate is obtained after a transfer time of between 30 seconds and 1 min approximately for a temperature in the region of 140 ° C.
- the paper does not tear and does not break on the edges and angles of contact with the plate during the application of the vacuum.
- Example 1 We use the support of Example 1 and deposit on the rougher side a black ink by heliographic printing two passes to obtain color uniformity and good surface coverage by selecting the wefts and the depths of etched cells .
- Ink black is based on conductive carbon black and nitrocellulose varnish.
- a decoration is printed on the other side of the sheet by offset printing with sublimable inks and the transfer is carried out as described in Example 1.
- the transfer is carried out at the same temperatures, but in about 5 to 20 s, obtaining deeper and more intense shades.
- the electrical conductivity measurements carried out according to standard ASTM D267 with the KEYTHLEY device give a surface conductivity of 1.3 106 ohms for an initial conductivity of the support not coated with carbon black of 3 1012 ohms.
- Example 2 The same operations are carried out as in Example 2, but the printing is carried out with an ink consisting of a non-conductive black pigment and a binder.
- the ink is obtained by mixing red, blue and yellow organic pigments with the binder and a dark brown is obtained, to which black, either organic, or based on iron oxide, or even black, is added. carbon, but in the latter case the maximum amount of carbon black will be a maximum of 10% by dry weight of the total amount of pigments.
- Printing is carried out in such a way that it is not film-forming, that is to say that by selecting the screens and depths of etchings, the printing does not entirely cover the surface of the paper in order to keep it its initial porosity.
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- Printing Methods (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
Description
L'invention concerne un support flexible imprimable utilisable notamment comme support auxiliaire flexible pour appliquer par transfert un décor coloré sur un substrat récepteur; ce substrat pouvant être de nature diverse (minérale, métallique, naturelle, de synthése, etc.), par exemple en matière synthétique thermoplastique. Le substrat peut être également un couche de matière synthétique appliquée sous forme de vernis.The invention relates to a flexible printable support usable in particular as a flexible auxiliary support for applying by transfer a colored decoration on a receiving substrate; this substrate may be of a diverse nature (mineral, metallic, natural, synthetic, etc.), for example made of thermoplastic synthetic material. The substrate can also be a layer of synthetic material applied in the form of a varnish.
On a décrit dans le document EP-A-0 014 615, déposé par ESSILOR, un procédé consistant à appliquer un support flexible (par exemple papier) comportant une impression réalisée à partir d'encres sublimables, sur une monture de lunettes placée dans une chambre à vide. On chauffe, tout en maintenant le vide, ce qui a pour effet que le support flexible épouse intimement la forme de la monture des lunettes.Document EP-A-0 014 615, filed by ESSILOR, describes a method consisting in applying a flexible support (for example paper) comprising an impression produced from sublimable inks, on a spectacle frame placed in a vacuum chamber. It is heated, while maintaining the vacuum, which has the effect that the flexible support intimately follows the shape of the frame of the glasses.
On a décrit dans la demande de brevet EP 90 108 663.7 un procédé permettant de décorer par transfert d'impressions sublimables portées sur un support flexible, cette décoration étant possible pour des substrats en matières synthétiques y compris des substrats thermoplastiques qui peuvent présenter une résistance à la chaleur qui ne dépasse pas 100 °C. Un tel procédé pour appliquer un décor coloré sur un substrat selon lequel on applique un support imprimé à l'aide d'encre sublimable sur ce substrat, on transfère l'encre par chauffage au dos du support imprimé par un rayonnement infrarouge tel que l'on chauffe le support imprimé à des températures inférieures à 170 °C. De préférence le support est noirçi sur sa face dorsale.There has been described in patent application EP 90 108 663.7 a process making it possible to decorate by transfer of sublimable prints carried on a flexible support, this decoration being possible for substrates made of synthetic materials including thermoplastic substrates which may have resistance to heat which does not exceed 100 ° C. Such a method for applying a colored decoration on a substrate according to which a printed support is applied using sublimable ink on this substrate, the ink is transferred by heating to the back of the printed support by infrared radiation such as the printed support is heated to temperatures below 170 ° C. Preferably the support is blackened on its dorsal face.
Selon ce procédé, le support imprimé doit être perméable à l'air. Cette porosité est nécessaire pour permettre de faire le vide entre le support imprimé et le substrat à décorer, évitant ainsi la formation de plis du support et éliminant les inclusions gazeuses entre le support imprimé et le substrat avant et pendant l'opération de sublimation.According to this process, the printed support must be breathable. This porosity is necessary to allow a vacuum to be created between the printed support and the substrate to be decorated, thus avoiding the formation of folds in the support and eliminating gaseous inclusions between the printed support and the substrate before and during the sublimation operation.
Un problème qui se pose donc pour un tel procédé est de fabriquer un support flexible, par exemple un papier, qui reçoit de façon satisfaisante l'impression constituée par des encres sublimables qui doit être transférée sur le substrat.A problem which therefore arises for such a method is to manufacture a flexible support, for example a paper, which satisfactorily receives the impression constituted by sublimable inks which must be transferred to the substrate.
Un autre problème qui se pose est de fabriquer un support flexible imprimable notamment par un procédé offset avec des encres sublimables.Another problem which arises is to manufacture a flexible printable support in particular by an offset process with sublimable inks.
Un autre problème qui se pose est de fabriquer un support flexible imprimable notamment par un procédé par héliogravure, avec des encres sublimables.Another problem which arises is to manufacture a flexible printable support in particular by a gravure process, with sublimable inks.
Un quatrième problème qui se pose est de fabriquer un support flexible imprimable soit par un procédé offset ,soit par un procédé héliographique, avec des encres sublimables adaptées à chacun des procédés; ceci pour faciliter le passage d'un procédé à l'autre en fonction des surfaces unitaires et des volumes de papier à imprimer.A fourth problem which arises is to manufacture a flexible printable support either by an offset process or by a heliographic process, with sublimable inks adapted to each of the processes; this is to facilitate the transition from one process to another depending on the unit areas and the volumes of paper to be printed.
Un cinquième problème qui se pose est d'avoir un support flexible dont les constituants n'interfèrent pas lors de l'opération de transfert,soit par action sur les encres sublimables, soit par dégagements gazeux parasites lors de la sublimation.A fifth problem which arises is to have a flexible support the constituents of which do not interfere during the transfer operation, either by action on the sublimable inks, or by parasitic gassing during sublimation.
Encore un autre problème qui se pose est d'avoir un bon contact entre le support flexible imprimé et le substrat récepteur par création d'une dépression entre les deux surfaces par aspiration de l'air à travers le support imprimé.Yet another problem which arises is to have good contact between the flexible printed support and the receiving substrate by creating a vacuum between the two surfaces by sucking air through the printed support.
Un autre problème est aussi d'avoir un support flexible qui soit suffisamment résistant lors du placage de la feuille, notamment sur les arètes et les coins des zones de contact.Another problem is also to have a flexible support which is sufficiently resistant during the plating of the sheet, in particular on the edges and the corners of the contact zones.
Un autre problème qui se pose est d'avoir un bon contact entre le support flexible et le substrat récepteur par création d'une charge électrostatique soit sur le support, soit sur le substrat, soit sur les deux.Another problem which arises is to have good contact between the flexible support and the receiving substrate by creating an electrostatic charge either on the support, or on the substrate, or on both.
Un autre problème qui se pose est d'avoir un support flexible ayant la propriété d'accepter et de conserver cette charge sans effets néfastes secondaires.Another problem which arises is to have a flexible support having the property of accepting and retaining this charge without adverse side effects.
Encore un autre problème qui se pose est de fabriquer un support flexible qui permette effectivement la sublimation des encres et ce en chauffant le support à des températures inférieures à 170 °C.Yet another problem which arises is to manufacture a flexible support which effectively allows the sublimation of the inks and this by heating the support to temperatures below 170 ° C.
L'invention vise donc à fournir un tel support flexible imprimable qui permette de résoudre les problèmes mentionnés ci-dessus.The invention therefore aims to provide such a flexible printable support which makes it possible to solve the problems mentioned above.
A cet effet, l'invention fournit un support flexible imprimable, destiné à être utilisé pour effectuer un procédé d'impression de substrat par transfert à chaud d'une impression d'encres sublimables, avec réalisation du vide entre le support flexible et le substrat, caractérisé par le fait que le support flexible est à la fois récepteur d'énergie et transmetteur d'énergie.To this end, the invention provides a flexible printable support, intended to be used for carrying out a substrate printing process by hot transfer of a print of sublimable inks, with the creation of a vacuum between the flexible support and the substrate. , characterized in that the flexible support is both an energy receiver and an energy transmitter.
De cette manière, le support flexible sera récepteur de l'énergie fournie par chauffage par rayonnement infra-rouge, en limitant le plus possible les effets de réflexion qui pourraient être générateurs de pertes d'énergie et de répartition hétérogène sur la surface traitée.In this way, the flexible support will receive the energy supplied by heating by infrared radiation, limiting as much as possible the reflection effects which could be generating energy losses and heterogeneous distribution on the treated surface.
Ainsi, l'énergie fournie par chauffage par rayonnement infra-rouge sur le dos du support flexible est retransmise sur sa face opposée, à savoir la face qui comporte l'impression par encre sublimable.Thus, the energy supplied by heating by infrared radiation on the back of the flexible support is retransmitted on its opposite face, namely the face which comprises printing by sublimable ink.
Selon un mode de réalisation préféré de l'invention, le support flexible est tel que ses constituants sont inertes vis-à-vis des encres sublimables utilisées. De plus, le support flexible selon l'invention est tel que ses constituants ne présentent pas d'effets néfastes lors de l'opération de sublimation.According to a preferred embodiment of the invention, the flexible support is such that its constituents are inert with respect to the sublimable inks used. In addition, the flexible support according to the invention is such that its constituents do not have harmful effects during the sublimation operation.
De préférence, le support flexible selon l'invention est tel que sa face destinée à recevoir l'impression est lisse, à savoir le niveau de lissage exprimé en secondes BEKK est supérieur à 80. La mesure du lissé BEKK est effectuée selon la norme ISO 5627.Preferably, the flexible support according to the invention is such that its face intended to receive the impression is smooth, namely the level of smoothness expressed in seconds BEKK is greater than 80. The measurement of the smoothness BEKK is carried out according to ISO standard 5627.
Le support flexible selon l'invention est en outre tel que ses constituants permettent un traitement de charges électrostatiques.The flexible support according to the invention is also such that its constituents allow treatment of electrostatic charges.
Le support flexible selon l'invention se caractérise aussi en ce que son poids exprimé en gramme par mètre carré est compris entre environ 30 et environ 120 g/m², de préférence entre 50 et 70 g/m².The flexible support according to the invention is also characterized in that its weight, expressed in grams per square meter, is between approximately 30 and approximately 120 g / m², preferably between 50 and 70 g / m².
Le support flexible selon l'invention se caractérise aussi par le fait que sa perméabilité à l'air, exprimée en secondes Gurley selon la norme ISO 5636-5 , est comprise entre environ 40 secondes et environ 200 secondes.The flexible support according to the invention is also characterized by the fact that its air permeability, expressed in Gurley seconds according to ISO standard 5636-5, is between approximately 40 seconds and approximately 200 seconds.
Une autre caractéristique du support flexible selon l'invention est que sa résistance mécanique, exprimée en résistance à l'éclatement selon le test Mullen est supérieure ou égale à environ 250 kPa. Le test Mullen est défini par la norme ISO 2758.Another characteristic of the flexible support according to the invention is that its mechanical resistance, expressed in bursting strength according to the Mullen test is greater than or equal to about 250 kPa. The Mullen test is defined by ISO standard 2758.
De plus, le support flexible selon l'invention est caractérisé en ce que sa face la plus rugueuse comporte une couche de pigments noirs non conducteurs, déposés par impression héliographique, capteurs d'énergie, par exemple générée par les rayons infra-rouges.In addition, the flexible support according to the invention is characterized in that its rougher face comprises a layer of non-conductive black pigments, deposited by heliographic printing, energy sensors, for example generated by infrared rays.
Ce type d'impression permet d'une part de réguler la couche déposée et d'autre part d'affecter le moins possible la perméabilité à l'air du support.This type of printing makes it possible on the one hand to regulate the deposited layer and on the other hand to affect the air permeability of the support as little as possible.
Plus préférentiellement, l'encre pour impression noire est une encre en milieu non aqueux afin de conserver un bon aplat du papier soit lors de l'impression ultérieure par les encres sublimables, soit sur le produit fini. On utilise de préférence une encre en milieu méthléthylcétone.More preferably, the ink for black printing is an ink in a nonaqueous medium in order to keep a good solid color of the paper either during the subsequent printing by the sublimable inks, or on the finished product. An ink is preferably used in a methlethylketone medium.
De plus, l'encre pour impression noire ne devant pas altérer la perméabilité à l'air du papier, il est préférable que la couche imprimée avec cette encre ne soit pas filmogène, c'est-àdire qu'elle ne recouvre pas totalement la surface du papier.In addition, since the black printing ink should not alter the air permeability of the paper, it is preferable that the layer printed with this ink is not film-forming, that is to say that it does not completely cover the surface of the paper.
La description suivante, en regard des exemples annexés à titre non limitatif, peremettra de comprendre comment l'invention peut être mise en pratique.The following description, with reference to the non-limiting examples appended, will make it possible to understand how the invention can be put into practice.
On réalise une dispersion fibreuse de cellulose blanchie comportant environ un tiers de fibres longues de résineux et deux tiers de fibres courtes d'un mélange pour moitié de fibres d'eucalyptus et de fibres de hétre, et raffinée à 50 degré Shoëpper, aprés ajout de 25 % de carbonate de calcium précipité ,par exemple le produit Hydrocarb 90 de la société OMYA. On introduit cette dispersion en tête de caisse d'une machine à papier à table plate du type Fourdrinier, on essore et on sèche. On obtient une feuille de papier que l'on lisse à l'aide d'une calandre sur ou hors machine.A fibrous dispersion of bleached cellulose is produced comprising approximately one third of long resinous fibers and two thirds of short fibers of a mixture for half of eucalyptus fibers and beech fibers, and refined to 50 degrees Shoëpper, after addition of 25% of precipitated calcium carbonate, for example the product Hydrocarb 90 from the company OMYA. This dispersion is introduced at the head of the case of a paper table machine of the Fourdrinier type, it is wrung and dried. A sheet of paper is obtained which is smoothed using a calender on or off the machine.
On obtient une feuille ayant les caractéristiques suivantes:
On imprime la feuille par un procédé héliographique à l'aide d'encres sublimables adéquates. L'impression est bonne et permet notamment de reproduire des effets décoratifs utilisés dans la décoration intéreure, tels que faux bois pour mobilier, effet pierres naturelles, décors abstraits et de fantaisie. On réalise un transfert sur une plaque de polymère thermoplastique selon la technique décrite dans la demande EP-A-90 108 66.7.The sheet is printed by a heliographic process using suitable sublimable inks. The impression is good and allows in particular to reproduce decorative effects used in interior decoration, such as faux wood for furniture, natural stone effect, abstract and fancy decorations. A transfer is carried out on a thermoplastic polymer plate according to the technique described in application EP-A-90 108 66.7.
On obtient une plaque imprimée après un temps de transfert compris entre 30 secondes et 1 min environ pour une température voisine de 140 °C.A printed plate is obtained after a transfer time of between 30 seconds and 1 min approximately for a temperature in the region of 140 ° C.
On constate que la plus grande partie des encres sublimables s'est transférée de manière homogène sur la plaque.It is found that most of the sublimable inks are transferred homogeneously on the plate.
de plus, le papier ne se déchire pas et ne casse pas sur les arêtes et les angles de contact avec la plaque lors de l'application du vide.moreover, the paper does not tear and does not break on the edges and angles of contact with the plate during the application of the vacuum.
On reprend le support de l'exemple 1 et on dépose sur la face la plus rugueuse une encre noire par impression héliographique deux passes pour obtenir une uniformité de couleur et un bon recouvrement de la surface en sélectionnant les trames et les profondeurs d'alvéoles gravées. L'encre noire est à base de noir de carbone conducteur et de vernis nitrocellulosique. On imprime, par impression offset, sur l'autre face de la feuille un décor avec des encres sublimables et on effectue le transfert comme décrit dans l'exemple 1.We use the support of Example 1 and deposit on the rougher side a black ink by heliographic printing two passes to obtain color uniformity and good surface coverage by selecting the wefts and the depths of etched cells . Ink black is based on conductive carbon black and nitrocellulose varnish. A decoration is printed on the other side of the sheet by offset printing with sublimable inks and the transfer is carried out as described in Example 1.
On effectue le transfert aux mêmes températures, mais dans un temps de 5 à 20 s environ, en obtenant des teintes plus profondes et plus intenses. On constate deux inconvénients principaux: En premier lieu, la présence de points d'étincellage lors de l'opération de charges électrostatiques du papier, conduit au fait que le papier s'enflamme et brûle. En second lieu, l'utilisation d'un vernis ou liant filmogène nitrocellulosique conduit à une chute de perméabilité à l'air ne permettant pas un bon placage par le vide de la feuille de papier sur le substrat à imprimer. L'impression obtenue sur le substrat présente des zones floues.The transfer is carried out at the same temperatures, but in about 5 to 20 s, obtaining deeper and more intense shades. There are two main drawbacks: First, the presence of spark points during the operation of electrostatic charges of the paper, leads to the fact that the paper ignites and burns. Secondly, the use of a nitrocellulosic film-forming varnish or binder leads to a drop in air permeability which does not allow good vacuum plating of the paper sheet on the substrate to be printed. The print obtained on the substrate has blurred areas.
Les mesures de conductivité électriques effectuées selon la norme ASTM D267 avec l'appareil KEYTHLEY donnent une conductivité de surface de 1,3 10⁶ ohms pour une conductivité initiale du support non revêtu de noir de carbone de 3 10¹² ohms.The electrical conductivity measurements carried out according to standard ASTM D267 with the KEYTHLEY device give a surface conductivity of 1.3 10⁶ ohms for an initial conductivity of the support not coated with carbon black of 3 10¹² ohms.
On effectue les mêmes opérations que précedemment mais on effectue l'impression par le noir de carbone après impression du décor par les encres sublimables.The same operations are carried out as above but the printing is carried out with carbon black after the decoration has been printed with sublimable inks.
On constate que le papier a les mêmes propriétés que celui de l'exemple 2.It is found that the paper has the same properties as that of Example 2.
On effectue les mêmes opérations que dans l'exemple 2, mais on effectue l'impression avec une encre constituée d'un pigment noir non conducteur et un liant.The same operations are carried out as in Example 2, but the printing is carried out with an ink consisting of a non-conductive black pigment and a binder.
L'encre est obtenue en effectuant un mélange de pigments organiques rouge, bleu et jaune avec le liant et on obtient un brun foncé auquel on rajoute du noir, soit organique, soit à base d'oxyde de fer, soit même du noir de carbone, mais dans ce dernier cas la quantité maximale du noir de carbone sera au maximum de 10 % en poids en sec de la quantité totale des pigments.The ink is obtained by mixing red, blue and yellow organic pigments with the binder and a dark brown is obtained, to which black, either organic, or based on iron oxide, or even black, is added. carbon, but in the latter case the maximum amount of carbon black will be a maximum of 10% by dry weight of the total amount of pigments.
On effectue l'impression de façon qu'elle ne soit pas filmogène, c'est-àdire que par sélection des trames et des profondeurs de gravures, l'impression ne recouvre pas entièrement la surface du papier pour lui garder sa porosité initiale.Printing is carried out in such a way that it is not film-forming, that is to say that by selecting the screens and depths of etchings, the printing does not entirely cover the surface of the paper in order to keep it its initial porosity.
On constate qu'on obtient, dans les mêmes conditions de température et de temps de transfert que celles de l'exemple 2, un rendu d'impression qui ne comporte pas de zones floues. En outre il n'y a pas d' effet d'étincelage et donc de combustion du papier, ni de diminution importante de la perméabilité à l'air du papier permettant ainsi un bon placage de la feuille sur le substrat à imprimer.It can be seen that, under the same conditions of temperature and transfer time as those of Example 2, a printing result is obtained which does not include blurred zones. In addition there is no sparking effect and therefore combustion of the paper, nor a significant reduction in the air permeability of the paper thus allowing good plating of the sheet on the substrate to be printed.
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9106384A FR2676965A1 (en) | 1991-05-28 | 1991-05-28 | PAPER FOR APPLYING A COLORED DECORATION ON A SUBSTRATE. |
| FR9106384 | 1991-05-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0516505A1 true EP0516505A1 (en) | 1992-12-02 |
Family
ID=9413186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92401367A Withdrawn EP0516505A1 (en) | 1991-05-28 | 1992-05-20 | Paper for application of a coloured design to a substrate |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0516505A1 (en) |
| FR (1) | FR2676965A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2743091A1 (en) * | 2012-12-17 | 2014-06-18 | Martinovic Zvonimir | Improved transfer medium |
| US10953682B2 (en) | 2018-11-19 | 2021-03-23 | Kaspar Papir Pte Ltd | Light-stabilizing transfer medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2104798A1 (en) * | 1970-07-22 | 1972-04-21 | Toppan Printing Co Ltd | |
| FR2200786A5 (en) * | 1972-09-21 | 1974-04-19 | Sublistatic Holding Sa | |
| DE2809185A1 (en) * | 1978-03-03 | 1979-09-13 | Werner Lammers | Hot printing process economical for small editions - uses coloured foil with cliche foil having IR-absorbing printing elements, produced e.g. by toner transfer |
| US4245003A (en) * | 1979-08-17 | 1981-01-13 | James River Graphics, Inc. | Coated transparent film for laser imaging |
| GB2083726A (en) * | 1980-09-09 | 1982-03-24 | Minnesota Mining & Mfg | Preparation of multi-colour prints by laser irradiation and materials for use therein |
-
1991
- 1991-05-28 FR FR9106384A patent/FR2676965A1/en not_active Withdrawn
-
1992
- 1992-05-20 EP EP92401367A patent/EP0516505A1/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2104798A1 (en) * | 1970-07-22 | 1972-04-21 | Toppan Printing Co Ltd | |
| FR2200786A5 (en) * | 1972-09-21 | 1974-04-19 | Sublistatic Holding Sa | |
| DE2809185A1 (en) * | 1978-03-03 | 1979-09-13 | Werner Lammers | Hot printing process economical for small editions - uses coloured foil with cliche foil having IR-absorbing printing elements, produced e.g. by toner transfer |
| US4245003A (en) * | 1979-08-17 | 1981-01-13 | James River Graphics, Inc. | Coated transparent film for laser imaging |
| GB2083726A (en) * | 1980-09-09 | 1982-03-24 | Minnesota Mining & Mfg | Preparation of multi-colour prints by laser irradiation and materials for use therein |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2743091A1 (en) * | 2012-12-17 | 2014-06-18 | Martinovic Zvonimir | Improved transfer medium |
| WO2014095762A1 (en) * | 2012-12-17 | 2014-06-26 | Zvonimir Martinovic | Improved transfer medium |
| CN105026170A (en) * | 2012-12-17 | 2015-11-04 | 兹沃尼米尔·马丁诺维奇 | Improved Transfer Media |
| CN105026170B (en) * | 2012-12-17 | 2018-07-10 | 卡斯帕尔帕皮尔有限公司 | Improved offset medium |
| US10513138B2 (en) | 2012-12-17 | 2019-12-24 | Kaspar Papir Pte Ltd | Transfer medium |
| US10953682B2 (en) | 2018-11-19 | 2021-03-23 | Kaspar Papir Pte Ltd | Light-stabilizing transfer medium |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2676965A1 (en) | 1992-12-04 |
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