US3185086A - Method and arrangement for reproducing an image - Google Patents

Method and arrangement for reproducing an image Download PDF

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US3185086A
US3185086A US120243A US12024361A US3185086A US 3185086 A US3185086 A US 3185086A US 120243 A US120243 A US 120243A US 12024361 A US12024361 A US 12024361A US 3185086 A US3185086 A US 3185086A
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dye
portions
sheet
image
transferable
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Ritzerfeld Wilhelm
Ritzerfeld Gerhard
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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
    • B41M5/04—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet using solvent-soluble dyestuffs on the master sheets, e.g. alcohol-soluble
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/055—Thermographic processes for producing printing formes, e.g. with a thermal print head

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  • the present invention relates to a method and arrangement for reproducing an image, particularly suitable for producing hectographic masters from an original image such as a pattern, photograph or printed sheet.
  • Hectographic masters produced in this manner will give only blurred copies with very poor detintiion and lack of sharpness. This is due to the fact that it apparently is impossible in this manner to limit the melting and the transfer of the hectographic ink layer exactly to the portions corresponding to the image which is to be reproduced.
  • the present invention includes a method of reproducing an image, comprising the steps of forming a multi-layer structure including in the indicated sequence sheet means defining an image comprising image forming and image free portions, a layer including a first d ve component and a layer including a second dye component adapted at a predetermined elevated temperature to react with said rst dye component under formation of a dye, the image forming portions of the sheet means having a greater specific heat transfer capacity than the image free portions thereof so that upon exposure of the sheet means to predetermined infrared radiation portions of the first and second dye components corresponding to the image forming portion will be heated to the predetermined elevated temperature and thus react under formation of the dye While portions 'of the 4layers of dye components corresponding to the image free portions will remain below the predetermined elevated temperature, and exposing the multi-layer structure to the predetermined infrared radiation so as to heat and react the portions of the first and second dye components corresponding to the image forming portions, whereby the dye will be formed of the re
  • the present invention also contemplates for use in an image reproducing arrangement, a composite sheet comprising, in combination, a backing sheet, a second layer of a material selected from the group consisting of gelatin, polyglycol, polyvinyl alcohol, low melting alkyd resin. polyacrylate and wax having a second dye component distributed therethrough, and a first layer of a material selected from the group consisting of gelatin, polyglycol,
  • polyvinyl alcohol, 10W melting alkyd resin, polyacrylate and Wax having distributed therethrough a first dye component adapted to react at a predetermined elevated temperature with 4the second dye component so as to form a transferable dye, the second layer being soluble in a solvent in which the first layer is substantially insoluble, and the second layer being interposed between and adhering to the backing sheet and the first layer.
  • hcctographic master sheets of great sharpness can be produced with an arrangement and by a method according to which the master sheet is formed with a layer of a rst dye component on which a layer of a second dye component is superposed, whereby the rst and second dye components are so chosen that they will react with each other at a predetermined elevated temperature under formation of a transferable dye, i.e. a dye suitable for hectographic copying.
  • the layer of .the second dye component may adhere to the backing sheet with interposition of the layer of rst dye component, or the layer of second dye component may just be placed in contact with the layer of first dye component, without adhering thereto.
  • the present invention is not limited to specific dyes and dye components for formation of such dyes, but preferably dyes will be produced by subjecting portions of the superposed dye component layers corresponding to the image forming portions of the image which is to be reproduced to a sufficiently high temperature to cause reaction between the dye components and thereby formation of the dye.
  • the hectographic master may be formed of a backing sheet covered on one face with a layer containing the leuco compound of a :triaryl methane dye, which layer in turn is covered with or contacted with a layer containing a suitable organic or inorganic oxidizing agent, for instance tetrachloroquinone or ceriuin (IV) sulfate.
  • a suitable organic or inorganic oxidizing agent for instance tetrachloroquinone or ceriuin (IV) sulfate.
  • the layer on the prospective master sheet will contain the components of an indophenol or indamine, and the second layer will contain an organic or inorganic oxidizing agent such as quinone or copper (ll) chloride.
  • the first and second dye components preferably are incorporated in layers of a substance such as gelatin, polyglycol, polyvinyl alcohol, low melting alkyd resin, poiyacrylate or wax.
  • the layer containing the iirst dye component as well as the layer containing the second dye component will adhereto the backing of the master sheet, however, it is also possible to have only the layer containing the first dye component integral with the master sheet, while the layer containing the second dye component is formed on a separate backing sheet and placed in contact with the layer containing the first dye component.
  • the layer containing the second dye component usually the oxidizin Y agent
  • the layer containing the second dye component also has certain advantages, such as the possibility of re-using the second layer provided that after the nevious use sufficient unreacted oxidizing agent remains there-
  • the backing sheets of the hectographic master and of the layer containing the second dye component preferably wiil be formed of a materiai which will not absorb infrared radiation or will absorb such radiation only to a relatively small degree.
  • the backing sheet of the master may consist of cellulose acetate and the backing sheet for the second dye component of cellulose nitrate or a pergamyn-type parchment.
  • the invention is not to be considered limited to any specific material for forming the backing sheet.
  • FIGS. 1-8 illustrate arrangements and methods for reproducing an image by heating superposed first and second dye components corresponding to the image forming portions, to a temperature suciently high to cause reaction between the first and second dye components resulting in formation of the dye, more particularly,
  • FIGS. l and 2 illustrate a method and arrangement wherein the layers containing the first and second dye component are adhered to a single backing sheet and are reacted by reflex exposure to infrared radiation',
  • FIGS. 3 and 4 illustrate an arrangement which differs from the one of FIGS. 1 and 2 by providing a separate backing sheet for the layer containing the second dye component;
  • FIGS. 5 and 6 illustrate an arrangement wherein the image which is to be reproduced appears on one face of the master backing sheet, and the layers containing the first and second dye components are arranged on the other face of the Same backing sheet;
  • FIGS. 7 and 8 illustrate an arrangement which differs from the one of FIGS. 5 and 6 by having the layer containing the second dye component formed on a separate backing sheet, and also by having the original image which is to be transferred to the master located on a separate backing sheet.
  • reference numeral 21 denotes the backing sheet of the hectographic master sheet which is to be formed, the layer containing the first dye component, for instance, the leuco compound, is indicated by reference numeral 22.
  • the layer 24 containing the second dye cornponent, such as the oxidizing agent is formed on a separate backing sheet, such separate backing sheet is indicated by reference numeral 23.
  • the original image which is to be copied may oe on a separate backing sheet 25,
  • Example I A gelatin-pol 'glycol emulsion (2:1) containing 30% leuco malachite green is applied with a thickness of layer 0.015 mm. to one face of a cellulose acetate foil with a thickness of 036 mm. and dried so as to form a layer thereon.
  • a pergamyn-type ariiicial parchment paper i.e., e grease proof, imitation parchment paper, made from sulde pulp by beating until geiatinons, of'SO gjm.2 a layer is formed consisting of a softener containing polymethacrylic acid ester having tetrachloroquinone distributed therethrough.
  • the two sheets are superposed with the two layers contacting each other. Infrared exposure is carried out by reiiex, as illustrated in FIG. 3, for a period of about 15 seconds.
  • the hectographic master sheet including the backing sheet 21 and malachite green portions 27 may be copied on a conventional alcohol duplicator.
  • Example Il The process is carried out as described in Example I, however, the leuco base of malachite green is replaced by the leuco base of crystal violet, and cerium (IV) sulfate is used as the oxidizing agent in place of tetrachloroquinone.
  • Example Ill A leuco malachite green-containing emulsion of polyglycol is applied to one face of an acetate foil with a thickness of 0.06 rnm. and dried so as to form a layer thereon.
  • a solution of polymethacrylic acid ester and 2,4-dichlorobenzoylperoxide in isobutanol is applied with a thickness of 0.91 mm. to the free face of the previously formed layer and dried so as to form a layer containing the second (oxidizing) dye component.
  • the original image including image forming portions 26 is superposed upon the second layer 24 and exposed by reiiex to infrared radiation as illustrated in FIG. l.
  • a hectographic master sheet is obtained containing transferable image portions 27 of malachite green, as illustrated in FIG. 2.
  • Example IV The process described in Example I is carried out with an intimate mixture of dimethyl-p-phenylcne diamine and m-toluylene diamine as the first dye component and benzoquinone as the second dye component.
  • a master sheet By infrared radiation, a master sheet is formed which contains the transferable dye toluylene blue as a mirror image of the original image forming portions 25.
  • a method of forming a transferable reproduction of an image comprising the steps of forming a multilayer structure including in the indicated sequence sheet means defining an image comprising image forming and image free portions, a layer including a rst dye component, a layer including a second dye component adapted at a predetermined elevated temperature to react with said rst dye component to form a transferable, alcohol soluble, colored dye, and a backing sheet, at least the layer including said first dye component adheringT to said backing sheet, said image forming portions of said sheet means having a greater specic heat transfer capacity than said image free portions thereof so that upon exposure of said sheet means to predetermined infrared radiation portions of said first and second dye components corresponding to said image forming portions will be heated to said predetermined elevated temperature and thus react so as to form said transferable, alcohol soluble dye while portions of said layers of dye components corresponding to said image free portions will remain below said predetermined elevated ternperature; exposing said multilayer structure to said predetermined infrared radiation so as to heat and
  • one of said dye components consists essentially of an oxidizing agent, and the other of said dye components of a substance adapted to be oxidized by said oxidizing agent.
  • said oxidizing agent is selected from the group consisting of tetrachloroquinone, quinone and cerium (1V) sulfate, and wherein said substance is selected from the group consisting of leuco compounds of a triaryl methane dye, indophenols and indamines.
  • said backing sheet is formed of a material having a relatively low capacity for absorbing infrared radiation.
  • ROBERT A LEIGHEY, ROBERT E, PULFREY,

Description

May 25,1965 w. RITZERFELD ETAL 3,185,086
METHOD ARRANGEMENT FOR REPRODUCING AN IMAGE Filed June 28, 1961 2 Sheets-Sheet l May 25, 1965 w. RITZERFELD ETAL 3,185,086
METHOD AND RRANGEMENT FOR REPRODUCING AN IMAGE Filed June 28. 1961 2 Sheets-Sheet 2 @I f f I fm? I I 27 n 'l x x w12" Fig. 6
w 211 m v /ma W for www di @ad m4/44 b2" zkdfffffe# AMM? llnited States Patent Otihce iti Patented May 25, i955 7 Ciaims. (Cl. itil-149.4)
The present invention relates to a method and arrangement for reproducing an image, particularly suitable for producing hectographic masters from an original image such as a pattern, photograph or printed sheet.
The present application is a continuation-impart of our copending application Serial No. 113,986 filed on or about May l5, 1961 and entitled Image Reproducing Arrangement and Method.
It has been proposed to produce transferable images on hectographic master sheets by applying infrared heat to the image-forming portions of an hectographic ink sheet so as to melt these portions of the hectographic ink layer and to transfer the molten portions from the ink sheet to an intermediate sheet or master blank interposed between the original image and the ink sheet.
However, to proceed in this manner requires the heating of'tlie image forming portion of the hectographic ink layer to above the melting point of the same since the molten portions of the hectographic ink layer are expected to adhere to corresponding portions of the master blank, thus forming a hectographic ink pattern corresponding to the image on the master blank. Hectographic masters produced in this manner will give only blurred copies with very poor detintiion and lack of sharpness. This is due to the fact that it apparently is impossible in this manner to limit the melting and the transfer of the hectographic ink layer exactly to the portions corresponding to the image which is to be reproduced. It seems to be unavoidable that adjacent portions of the ink layer which do not correspond to the desired image which is to be reproduced, will also be transferred from the hectograpliic ink sheet to the master and this in turn will result in blurring of copies made from a thus produced master.
It is therefore one of the objects of the present invention to overcome the above discussed difiiculties and disadvantages.
It is a further object of the present invention to provide a method and arrangement for reproducing an image which method and arrangement will permit the transfer of portions of a layer of coloring material onto a master or copy sheet in such a manner that the thus-transferred portion of coloring material will correspond exactly to the image which is to be reproduced.
It is another object of the present invention to provide a method and arrangement for reproducing an image, particularly for the purpose of forming a hectographic master sheet, which will result in an exact reproduction of the image on the hectographic master sheet and will allow the production of sharp copies therefrom.
Other objects and advantages of the present invention will become apparent from a further reading of the description and of the appended claims.
With the above other objects in View, the present invention includes a method of reproducing an image, comprising the steps of forming a multi-layer structure including in the indicated sequence sheet means defining an image comprising image forming and image free portions, a layer including a first d ve component and a layer including a second dye component adapted at a predetermined elevated temperature to react with said rst dye component under formation of a dye, the image forming portions of the sheet means having a greater specific heat transfer capacity than the image free portions thereof so that upon exposure of the sheet means to predetermined infrared radiation portions of the first and second dye components corresponding to the image forming portion will be heated to the predetermined elevated temperature and thus react under formation of the dye While portions 'of the 4layers of dye components corresponding to the image free portions will remain below the predetermined elevated temperature, and exposing the multi-layer structure to the predetermined infrared radiation so as to heat and react the portions of the first and second dye components corresponding to the image forming portions, whereby the dye will be formed of the reacted first and second dye component portions corresponding to the image forming portions of the sheet means.
The present invention also contemplates for use in an image reproducing arrangement, a composite sheet comprising, in combination, a backing sheet, a second layer of a material selected from the group consisting of gelatin, polyglycol, polyvinyl alcohol, low melting alkyd resin. polyacrylate and wax having a second dye component distributed therethrough, and a first layer of a material selected from the group consisting of gelatin, polyglycol,
polyvinyl alcohol, 10W melting alkyd resin, polyacrylate and Wax and having distributed therethrough a first dye component adapted to react at a predetermined elevated temperature with 4the second dye component so as to form a transferable dye, the second layer being soluble in a solvent in which the first layer is substantially insoluble, and the second layer being interposed between and adhering to the backing sheet and the first layer.
It has now been found that hcctographic master sheets of great sharpness can be produced with an arrangement and by a method according to which the master sheet is formed with a layer of a rst dye component on which a layer of a second dye component is superposed, whereby the rst and second dye components are so chosen that they will react with each other at a predetermined elevated temperature under formation of a transferable dye, i.e. a dye suitable for hectographic copying. The layer of .the second dye component may adhere to the backing sheet with interposition of the layer of rst dye component, or the layer of second dye component may just be placed in contact with the layer of first dye component, without adhering thereto.
Upon exposure of certain portions of the superposed layers of dye components to a predetermined elevated temperature, as will be described in detail below, the two dye components of these portions will react with each other under formation of the transferable dye.
Broadly, the present invention is not limited to specific dyes and dye components for formation of such dyes, but preferably dyes will be produced by subjecting portions of the superposed dye component layers corresponding to the image forming portions of the image which is to be reproduced to a sufficiently high temperature to cause reaction between the dye components and thereby formation of the dye.
The hectographic master, for instance, may be formed of a backing sheet covered on one face with a layer containing the leuco compound of a :triaryl methane dye, which layer in turn is covered with or contacted with a layer containing a suitable organic or inorganic oxidizing agent, for instance tetrachloroquinone or ceriuin (IV) sulfate.
According -to another embodiment, the layer on the prospective master sheet will contain the components of an indophenol or indamine, and the second layer will contain an organic or inorganic oxidizing agent such as quinone or copper (ll) chloride.
The first and second dye components preferably are incorporated in layers of a substance such as gelatin, polyglycol, polyvinyl alcohol, low melting alkyd resin, poiyacrylate or wax.
Preferably the layer containing the iirst dye component as well as the layer containing the second dye component will adhereto the backing of the master sheet, however, it is also possible to have only the layer containing the first dye component integral with the master sheet, while the layer containing the second dye component is formed on a separate backing sheet and placed in contact with the layer containing the first dye component.
The last mentioned arrangement, according to which the layer containing the second dye component, usually the oxidizin Y agent, is formed on a separate backing sheet, also has certain advantages, such as the possibility of re-using the second layer provided that after the nevious use sufficient unreacted oxidizing agent remains there- The backing sheets of the hectographic master and of the layer containing the second dye component (assuming that a separate backing sheet is used for the second dye component) preferably wiil be formed of a materiai which will not absorb infrared radiation or will absorb such radiation only to a relatively small degree. Thus, for instance, :the backing sheet of the master may consist of cellulose acetate and the backing sheet for the second dye component of cellulose nitrate or a pergamyn-type parchment. The invention, however, is not to be considered limited to any specific material for forming the backing sheet.
The novel features which are considered as characteristic for the invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings, in which:
FIGS. 1-8 illustrate arrangements and methods for reproducing an image by heating superposed first and second dye components corresponding to the image forming portions, to a temperature suciently high to cause reaction between the first and second dye components resulting in formation of the dye, more particularly,
FIGS. l and 2 illustrate a method and arrangement wherein the layers containing the first and second dye component are adhered to a single backing sheet and are reacted by reflex exposure to infrared radiation',
FIGS. 3 and 4 illustrate an arrangement which differs from the one of FIGS. 1 and 2 by providing a separate backing sheet for the layer containing the second dye component;
FIGS. 5 and 6 illustrate an arrangement wherein the image which is to be reproduced appears on one face of the master backing sheet, and the layers containing the first and second dye components are arranged on the other face of the Same backing sheet; and
FIGS. 7 and 8 illustrate an arrangement which differs from the one of FIGS. 5 and 6 by having the layer containing the second dye component formed on a separate backing sheet, and also by having the original image which is to be transferred to the master located on a separate backing sheet.
Referring now particularly, to FIGS. 1 8, reference numeral 21 denotes the backing sheet of the hectographic master sheet which is to be formed, the layer containing the first dye component, for instance, the leuco compound, is indicated by reference numeral 22. In such cases where the layer 24 containing the second dye cornponent, such as the oxidizing agent, is formed on a separate backing sheet, such separate backing sheet is indicated by reference numeral 23. The original image which is to be copied may oe on a separate backing sheet 25,
Example I A gelatin-pol 'glycol emulsion (2:1) containing 30% leuco malachite green is applied with a thickness of layer 0.015 mm. to one face of a cellulose acetate foil with a thickness of 036 mm. and dried so as to form a layer thereon.
On a pergamyn-type ariiicial parchment paper, i.e., e grease proof, imitation parchment paper, made from sulde pulp by beating until geiatinons, of'SO gjm.2 a layer is formed consisting of a softener containing polymethacrylic acid ester having tetrachloroquinone distributed therethrough. The two sheets are superposed with the two layers contacting each other. Infrared exposure is carried out by reiiex, as illustrated in FIG. 3, for a period of about 15 seconds. The portions of the layers corresponding to image forming portions 2e will be heated sufficiently to cause oxidation of the leuco malachite green to malachite green, while the portions of the layers corresponding to the image free portions will not react. After separation of the composite sheets as iilustrated in FIG. 4, the hectographic master sheet including the backing sheet 21 and malachite green portions 27 may be copied on a conventional alcohol duplicator.
Example Il The process is carried out as described in Example I, however, the leuco base of malachite green is replaced by the leuco base of crystal violet, and cerium (IV) sulfate is used as the oxidizing agent in place of tetrachloroquinone.
Example Ill A leuco malachite green-containing emulsion of polyglycol is applied to one face of an acetate foil with a thickness of 0.06 rnm. and dried so as to form a layer thereon. A solution of polymethacrylic acid ester and 2,4-dichlorobenzoylperoxide in isobutanol is applied with a thickness of 0.91 mm. to the free face of the previously formed layer and dried so as to form a layer containing the second (oxidizing) dye component.
The original image including image forming portions 26 is superposed upon the second layer 24 and exposed by reiiex to infrared radiation as illustrated in FIG. l.
Upon separation of the sheets, a hectographic master sheet is obtained containing transferable image portions 27 of malachite green, as illustrated in FIG. 2.
Example IV The process described in Example I is carried out with an intimate mixture of dimethyl-p-phenylcne diamine and m-toluylene diamine as the first dye component and benzoquinone as the second dye component. By infrared radiation, a master sheet is formed which contains the transferable dye toluylene blue as a mirror image of the original image forming portions 25.
It wiil be understood th .t each of the elements described above, or two or more together, may also find a useful application in other types of image reproducing arrangements ditiering from the types described above.
While the invention has been illustrated and described as embodied in an arrangement for producing hectographic master sheets, it is not int "ded to be limited to the details shown, since various me... ions and structural changes may be made without departing in any way from the spirit of the present invention.
Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can by applying current knowledge readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention and, therefore, such adaptations should and are intended to be coniprehended Within the meaning and range of equivalence of the following claims.
What is claimed as new and desired to be secured by Letters Patent is:
1. A method of forming a transferable reproduction of an image, comprising the steps of forming a multilayer structure including in the indicated sequence sheet means defining an image comprising image forming and image free portions, a layer including a rst dye component, a layer including a second dye component adapted at a predetermined elevated temperature to react with said rst dye component to form a transferable, alcohol soluble, colored dye, and a backing sheet, at least the layer including said first dye component adheringT to said backing sheet, said image forming portions of said sheet means having a greater specic heat transfer capacity than said image free portions thereof so that upon exposure of said sheet means to predetermined infrared radiation portions of said first and second dye components corresponding to said image forming portions will be heated to said predetermined elevated temperature and thus react so as to form said transferable, alcohol soluble dye while portions of said layers of dye components corresponding to said image free portions will remain below said predetermined elevated ternperature; exposing said multilayer structure to said predetermined infrared radiation so as to heat and react the portions of said first and second dye components corresponding to said image forming portions, whereby a hectographic master sheet will be produced consisting of said backing sheet with said transferable, alcohol soluble dye formed thereon of said reacted first and second dye component portions corresponding to the image forming portions of said sheet means; separating said hectographic master sheet consisting of said backing sheet with said transferable alcohol soluble dye thereon; and making duplicate copies from said thus obtained hectographic master sheet by an alcohol duplicating method.
2. A method according to claim 1 wherein one of said dye components consists essentially of an oxidizing agent, and the other of said dye components of a substance adapted to be oxidized by said oxidizing agent.
3. A method according to claim 2 wherein said oxidizing agent is selected from the group consisting of tetrachloroquinone, quinone and cerium (1V) sulfate, and wherein said substance is selected from the group consisting of leuco compounds of a triaryl methane dye, indophenols and indamines.
4. A method according to claim 1 wherein said backing sheet is formed of a material having a relatively low capacity for absorbing infrared radiation.
5. A method according to claim 4 wherein said material is cellulose acetate.
6. A method according to claim 1 wherein said multilayer structure is exposed to direct predetermined infrared radiation.
7. A method according to claim 1 wherein said multilayer structure is exposed to reflex predetermined infrared radiation.
References Cited bythe Examiner UNITED STATES PATENTS 2,755,200 7/56 Balen et al 101-426 2,755,203 7/56 Stallman 101-426 2,929,736 3/ 60 Miller et al 117-369 X 2,939,009 5/60 Tien lOl-149.4 X 2,967,785 l/61 Allen et al 117-369 WlLLIAM B. PENN, Primary Examiner.
ROBERT A. LEIGHEY, ROBERT E, PULFREY,
Examiners.

Claims (1)

1. A METHOD OF FORMING A TRANSFERABLE REPRODUCTION OF AN IMAGE, COMPRISING THE STEPS OF FORMING A MULTILAYER STRUCTURE INCLUDING IN THE INDICATED SEQUENCE SHEET MEANS DEFINING AN IMAGE COMPRISING IMAGE FORMING AND IMAGE FREE PORTIONS, A LAYER INCLUDING A FIRST DYE COMPONENT, A LAYER INCLUDING A SECOND DYE COMPONENT ADAPTED AT A PREDETERMINED ELEVATED TEMPERATURE TO REACT WITH SAID FIRST DYE COMPONENT TO FORM A TRANSFERABLE, ALCOHOL SOLUBLE, COLORED DYE, AND A BACKING SHEET, AT LEAST THE LAYER INCLUDING SAID FIRST DYE COMPONENT ADHERING TO SAID BACKING SHEET, SAID IMAGE FORMING PORTIONS OF SAID SHEET MEANS HAVING A GREATER SPECIFIC HEAT TRANSFER CAPACITY THAN SAID IMAGE FREE PORTIONS THEREOF SO THAT UPON EXPOSURE OF SAID SHEET MEANS TO PREDETERMINED INFRARED RADIATION PORTIONS OF SAID FIRST AND SECOND DYE COMPONENTS CORRESPONDING TO SAID IMAGE FORMING PORTIONS WILL BE HEATED TO SAID PREDETERMINED ELEVATED TEMPERATURE AND THUS REACT SO AS TO FORM SAID TRANSFERABLE, ALCOHOL SOLUBLE DYE WHILE PORTIONS OF SAID LAYERS OF DYE COMPONENTS CORRESPONDING TO SAID IMAGE FREE PORTIONS WILL REMAIN BELOW SAID PREDETERMINED ELEVATED TEMPERATURE; EXPOSING SAID MULTILAYER STRUCTURE TO SAID PREDETERMINED INFRARED RADIATION SO AS TO HEAT AND REACT THE PORTIONS OF SAID FIRST AND SECOND DYE COMPONENTS CORRESPONDING TO SAID IMAGE FORMING PORTIONS, WHEREBY A HECTOGRAPHIC MASTER SHEET WILL BE PRODUCED CONSISTING OF SAID BACKING SHEET WITH SAID TRANSFERABLE, ALCOHOL SOLUBLE DYE FORMED THEREON OF SAID REACTED FIRST AND SECOND DYE COMPONENT PORTIONS CORRESPONDING TO THE IMAGE FORMING PORTIONS OF SAID SHEET MEANS; SEPARATING SAID HECTOGRAPHIC MASTER SHEET CONSISTING OF SAID BACKING SHEET WITH SAID TRANSFERABLE ALCOHOL SOLUBLE DYE THEREON; AND MAKING DUPLICATE COPIES FROM SAID THUS OBTAINED HECTOGRAPHIC MASTER SHEET BY AN ALCOHOL DUPLICATING METHOD.
US120243A 1960-05-18 1961-06-28 Method and arrangement for reproducing an image Expired - Lifetime US3185086A (en)

Applications Claiming Priority (4)

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DER27980A DE1128870B (en) 1960-05-18 1960-05-18 Process for the production of copies or printing forms by photothermal means
DER27989A DE1128871B (en) 1960-05-18 1960-05-19 Process for the production of copies or printing forms by photothermal means
DER28269A DE1133740B (en) 1960-05-18 1960-07-06 Process for the production of multipurpose printing forms
DER35415A DE1232989B (en) 1960-05-18 1963-06-13 Process for the production of copies or printing forms by photothermal means

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3703143A (en) * 1970-02-16 1972-11-21 Bell & Howell Co Thermal transfer sheet and method of thermally transferring images

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL295730A (en) * 1962-07-25 1900-01-01
US3230875A (en) * 1963-01-16 1966-01-25 Columbia Ribbon & Carbon Thermographic duplication
KR950008182B1 (en) 1986-12-09 1995-07-26 폴라로이드 코오포레이션 Thermal imaging medium
US4943509A (en) * 1987-02-27 1990-07-24 Brother Kogyo Kabushiki Kaisha Recording system having a coating device for coating recording medium or photosensitive medium with developer material reacting with color precursor
JPS63236682A (en) * 1987-03-26 1988-10-03 Brother Ind Ltd Recording medium
JPH01174485A (en) * 1987-12-29 1989-07-11 Brother Ind Ltd Color developer
DE19517625A1 (en) * 1995-05-13 1996-11-14 Budenheim Rud A Oetker Chemie Laser printing esp. on glass or plastic substrate

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2755200A (en) * 1953-12-28 1956-07-17 Du Pont Stabilized coloring compositions and methods of making and using same
US2755203A (en) * 1954-02-03 1956-07-17 Du Pont Process of converting a polyamino-triarylmethane dye coating on a base from a stabilized leuco form to a colored form
US2929736A (en) * 1957-07-25 1960-03-22 Ncr Co Heat and pressure responsive record material
US2939009A (en) * 1956-02-01 1960-05-31 Jack M Tien Thermotransfer duplicating process
US2967785A (en) * 1959-08-14 1961-01-10 Eastman Kodak Co Thermographic copying material

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2808777A (en) * 1952-02-26 1957-10-08 Dick Co Ab Method for manufacturing duplicating masters
US3109367A (en) * 1955-01-03 1963-11-05 Xerox Corp Method for pattern reproduction
BE555263A (en) * 1956-02-25

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2755200A (en) * 1953-12-28 1956-07-17 Du Pont Stabilized coloring compositions and methods of making and using same
US2755203A (en) * 1954-02-03 1956-07-17 Du Pont Process of converting a polyamino-triarylmethane dye coating on a base from a stabilized leuco form to a colored form
US2939009A (en) * 1956-02-01 1960-05-31 Jack M Tien Thermotransfer duplicating process
US2929736A (en) * 1957-07-25 1960-03-22 Ncr Co Heat and pressure responsive record material
US2967785A (en) * 1959-08-14 1961-01-10 Eastman Kodak Co Thermographic copying material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3703143A (en) * 1970-02-16 1972-11-21 Bell & Howell Co Thermal transfer sheet and method of thermally transferring images

Also Published As

Publication number Publication date
CH403806A (en) 1965-12-15
GB922682A (en) 1963-04-03
GB1045026A (en) 1966-10-05
DE1128870B (en) 1962-05-03
DE1232989B (en) 1967-01-26
DE1128871B (en) 1962-05-03
CH433408A (en) 1967-04-15
GB922666A (en) 1963-04-03
GB921673A (en) 1963-03-20
DE1133740B (en) 1962-07-26
CH403807A (en) 1965-12-15
SE313736B (en) 1969-08-18

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