US2748024A - Transfer sheet for use in a hectograph duplicating process - Google Patents
Transfer sheet for use in a hectograph duplicating process Download PDFInfo
- Publication number
- US2748024A US2748024A US287616A US28761652A US2748024A US 2748024 A US2748024 A US 2748024A US 287616 A US287616 A US 287616A US 28761652 A US28761652 A US 28761652A US 2748024 A US2748024 A US 2748024A
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- US
- United States
- Prior art keywords
- sheet
- copy
- master
- diazo
- dye
- 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.)
- Expired - Lifetime
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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
- B41M5/0253—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet using a chemical colour-forming ink, e.g. chemical hectography
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S101/00—Printing
- Y10S101/29—Printing involving a color-forming phenomenon
Definitions
- gelatin system reproduction processes of the type described have been eifected by systems generally referred to in the art as the gelatin system and as the spirit duplicating system.
- a master sheet is imaged by typing, writing or drawing with an ink composition containing a Water soluble dye, usually crystal violet.
- the image is transferred in reverse by absorption during contact into a gelatin compound disposed in a pan or on the surface of a transfer sheet which then forms the printing medium.
- the water soluble dyestuff transfers from the moist printing medium to form copy upon contact with impression medium.
- the image is formed in reverse on a master by transfer from a carbon type sheet coated With a composition containing a high proportion of a water soluble dye such as crystal violet, Victoria green, Victoria blue and the like.
- the image transfers from the master to copy sheets, the surfaces of which have been wetted with an alcohol or alcohol and water combination upon contact, as between a compression cylinder and a printing plate mounted in a rotary duplicating machine.
- the highly volatile solvents permit the production of a larger number of copies and provide for more rapid drying of the copy sheet to reduce setoif and smear.
- the dyestui is preferably contained in a coating such as in a carbon sheet for transfer in mirror image onto the printing master by the application of force or the like.
- Another object is to provide a spirit duplicating system free of compounds capable of coloring or dirtying ones hands, clothing, the atmosphere or'the environment during the manufacture and use of the elements ernployed.
- a further object is to provide a spirit duplicating system in which permanent copy of good quality is produced.
- a still further object is to provide a new and improved spirit duplicating process including compositions and elements used therein.
- Another object is to provide a spirit duplicating system in which the color of the copy can be varied over a fairly wide range and includes the production of intense black copy of good quality.
- 'A further object is to provide a spirit duplicating system wherein the copy is formed of a Water and alcohol insoluble coloring compound incapable of removal, smearing or smudging even under high humidity conditions.
- a still further object is to provide a new and im.- proved hectograph'duplicating system capable of producing copy of various colorsfrom a single prepared master.
- Figure 2 is a sectional elevational View similar to that of Figure l showing a modification in a transfer sheet embodying features of this invention
- Figure 3 is a sectional elevational view similarto that of Figures l and 2 embodying a still further modification
- Figure 4 is an enlarged perspective view in section illustrating an arrangement of the transfer sheet of the type illustrated in Figures 1-3 in contacting relation with a master sheet for purposes of imaging responsive to the application of force;
- Figure 5 is a perspective view in section having the image thereon formed by transfer of coating from a transfer sheet of the type illustrated in Figures 1-3, and
- Figure 6 is a perspective view in section illustrating the production of copy responsive to contact of the imaged master with a copy sheet having its surface wetted with a spirit solvent and a reactive base.
- the image herein is formed on the master of a water or alcohol soluble component of a water insoluble dye and which has no objectionable color transfer value in the state in which it exists in the master or in the ink composition, inking ribbon or carbon sheet with which the master is formed but which upon transfer to the copy sheet forms a water insoluble dye by chemical reaction with other dye forming components contained in non-reactive state in the imaged master, or contained in the tluid with which the copy sheet is wetted for effecting transfer of the imaging component upon contact, or in the copy sheet or contained in a fluid applied to the copy sheet subsequent to transfer of the imaging material from the master.
- Example 1 A carbon type transfer sheet is formed by coating a thin iibrous sheet with a composition compounded of the following materials:
- composition is reduced to molten state at a temperature of about 80-85 C. for application as a hot melt onto the surface of the base sheet in concentrations ranging from l520 pounds per 3000 square feet.
- Example for preparation of the imaged master the coated sheet manufactured in accordance with Example l is positioned with the coated side in surface contact with the prepared surface of a suitable master sheet whereby materiali-s displaced frorn the coating to the surface of the master to form the mirror image of forces applied against the uncoated side of the coated sheet as by a stylus, writing pen or pencil, typewriter key. rdie impression or the like.
- the active ingredient in the coating composition for development of the image inthe copy sheet comprises the paradiazo diethyl aniline zinc chloride which is a water and alcohol soluble component of an azo dye and which has no objectionable color transfer value thereby to provide for a clean process in the manufacture of the coated sheet and the imaged master.
- the coating composition o-r the imaging composition with a minute amount of some coloring component selected of any one of the common pigments, dyestutfs or other coloring agents.
- Example 3 For the production of multiple copies, the imaged master prepared in accordance with Example 2 is mounted on a cylinder of a rotary duplicating machine of the conventional type for hectograph duplication.
- the uid applied to the surface of the copy sheet in advance of contact with the master may be formulated to contain the following:
- the number of copies secured depends greatly upon the thickness of the coating of which the image is formed, the amount of dye forming component contained in the coating composition and the character and quantity of solvent applied to the copy sheet for effecting transfer of the dye component from the imaged master for coupling reaction to develop color. It will be apparent, however, that the intensity of color capable of being developed by azo dye systems of the type described permits the production of readable copy with minimum corcentration of dye forming component with the result that by proper control, up to l0() to 50G copies may easily be securedfrom a single master.
- the amount of spirit solvent present on the copy sheet during contact with the master is sufficient to cause transfer of an innitestimal proportio'n of the azo dye forming component. present and that a minute portion of the carrier or wax base in which the dye component is contained is also removed to the copy sheet, otherwise the dye forming component in the master sheet would be converted into a water insoluble dyestuff incapable of being transferred to form copy in accordance with the concepts of this invention.
- the invention herein differs baiscally from the gelatin or the spirit processes which have heretofore been employed in the reproduction of copy.
- Example 4 in the event that it is desired to produce red copy instead of purple from the master prepared in accordance with Example 2, the copy sheet is wetted with a solution formulated of the following:
- Example 5 For the production of blue copy from the master prepared in accordance with Example 2, the copy sheet may be wetted in conventional manner with the following Example 6
- a suitable transfer sheet or a suitable imaging composition in aqueous dispersion or solvent solution for use in the practice of this invention may be compounded of the following cornposition:
- coatings having a weight of about 20 pounds per 3000 square feet of surface area are made from a hot melt onto a suitable base sheet by conventional coating technique, such as by a roller coater, knife coater, spray coater, dip-squeeze process or the like.
- the coating composition is incapable of free iiow when cooled to room conditions but is capable of transfer responsive to applied force from the opposite side of the base sheet to form the mirror image on the surface of a suitable master sheet positioned in surface contact therewith.
- Example 7 Dark purple copy may be produced from the master sheet imaged in accordance with Example 6 by use of a fluid corresponding to the composition of Example 3 for wetting out the surface of the copy sheet in advance of contact with the master. As many as 100 to 500 copies can be made before the dye forming diazo component is exhausted from the imaged master sheet. Red copy can be produced by use of the fluid of Exmaple 4 for wetting out the surface of the copy sheet and the same master can be used to produce blue copy when the copy sheets are wetted with a uid of Example 5.
- composition of the base in which the diazo dye forming component is embodied in the manufacture of a coated carbon sheet is unimportant and other conventional compositions used in the manufacture of coated carbons may be used.
- compositions are formulated of waxy materials in various combinations including carnauba wax, microcrystalline wax, paraffin wax, ozokerite and the like, alone or in combination with softening agents such as mineral oils, fatty acids and the like.
- Modication to improve strength vand film forming characteristics may include the addition of small amounts of polyethylene, polybutylene and other polymeric compounds formed of unsaturated aliphatics and other rnaterials capable of compatability with the waxy substances to form a stable composition.
- composition of the base in which the dye component is contained should provide for a continuous layer capable of transfer to surfaces in contact therewith upon impression but it is preferred to formulate the composition of materials which have slight solubility in the spirit solvents so as continuouslyto cleanse the surface of the imaged master during production of copy.
- carbon type coating composition as a hot melt in the manner described iri Examples 1 and 6, it is possible to achieve the desired coating of the base sheet by application of the materials fro-m solvent solutions or aqueous emulsions. However more than one coating will usually be required to achieve the desired coating weights on the base sheet.
- compositions of Examples 1 or 6 may be dissolved in ethyl acetate, trichloroethylene and the like, alone or in combination with toluene or benzene diluents to form a 20-40 percent solution or the compositions of the type described may be dispersed in aqueous medium with a small amount of surface active agent to form a 40-60 percent aqueous emulsion. From the solvent solution of lower solids content more than one coating will be necessary to achieve the desired coating weight but generally one, or at most two coatings will be suicient when coatings are prepared by the high solids content dispersions of the type described. Where high temperatures are not used to eliminate the diluents, almost any stable diazo dye forming component may be used, but where temperatures in excess of 80 C. are used for drying, the diazo component is limited because the great majority are unstable at such temperature levels.
- the amount of the dye forming component introduced as an vingredient in the coating composition depends on the ability to maintain sufficient fluidity under the condition of coating to achieve the desired application and coverage. For the production of a number of copies of sufficient intensity, it is advisable to maintain the concentration of dye component in excess of 20 percent by weight and preferably in excess of 50 percent by weight. In general, fluidity of the desired character falls oi when the concentration reaches percent by Weight but more may be used with the introduction of fluidizing agents.
- Such compounds are limited to aromatics in the form of amines, such as aniline and substituted anilines like dimethyl aniline, phenolic compounds such as phenol, resorcinol, phloroglucinol, 2,3-dihydroxy naphthalene, 6,sulf ⁇ onic acid or water soluble salts thereof, and the like, thio compounds such as tliio-barbituric acid and cyano cornpounds such as cyanoacetamide.
- the coupler is embodied in the fluid or as a component in the copy sheet, as will hereinafter be illustrated, it is desirable that the coupler be stable and incapable of developing background color because of the presence thereof over the entire surface of the copy sheet. It is also desirable to make use of a coupler which is readily available and inexpensive. Where the coupler is combined as a component of the carbon sheet or imaging composition, such limitations as to color development and cost are minimized.
- Compounds preferably dissolved in the fluid for adjusting the pH to a level for coupling may include the organic amines such as described in Examples 3-5, amongst others including monoethanol amine, triethanol amine and other organic amines, ammonium hydroxide, ammonia gas, or inorganic bases such as sodium hydroxide, potassium hydroxide, zinc hydroxide or other water soluble hydroxides or salts formed of strong bases and weak acids.
- organic amines such as described in Examples 3-5, amongst others including monoethanol amine, triethanol amine and other organic amines, ammonium hydroxide, ammonia gas, or inorganic bases such as sodium hydroxide, potassium hydroxide, zinc hydroxide or other water soluble hydroxides or salts formed of strong bases and weak acids.
- compositions may be used for preparing a carbon sheet or imaging composition containing the diazo dye 'forming component for coupling on the copy sheet to develop the visible image:
- Example 8 Percent Carnauba wax 12.5 Microcrystalline wax 10.5 Petrolatum 12.0 Mineral oil 15.0 p-Diazo dimethyl aniline zinc chloride 50.0
- Example 9 Percent Carnauba wax 19.0 Cetyl alcohol 25.0 Mineral oil 14.0
- the concepts of this invention may be achieved when the coupler is compounded as a component of the carbon coating or imaging composition and the diazo dye form ing component is contained in the wetting out uid in combination with the base substance for adjusting the pH, or else in the copy sheet wetted out with the solution of the base for adjusting the pH to the point where coupling can take place.
- a coating composition for the preparation of a transfer sheet may be formulated of the following:
- Application onto a vsuitable. base sheet may be made in weights of about 20 pounds per 3000 square feet from a hot melt raised to a temperature of about -90 C.
- the fluid for wetting out the copy sheet for purposes of extracting a proportion of the phloroglucinol from the imaged master whereby the dyestuif is developed by reaction in the copy sheet may be formulated of the following:
- the copy sheet is adapted to have been treated to contain a diazo dye intermediate such Vas p-diazo benzyl aniline vsulfonate for reaction with the coupler transferred from the imaged master.
- a diazo dye intermediate such Vas p-diazo benzyl aniline vsulfonate for reaction with the coupler transferred from the imaged master.
- the coupler and the alkali may be compounded in the carbon sheet and the diazo dye forming component placed in the fluid, as illustrated by 4the following examples:
- the combination described may be processed in the usual manner for spirit duplication to form a dark purple water insoluble dye in the imaged areas of the copy sheet.
- the diazo component is provided as an ingredient in the iluid or as a component of the copy sheet introduced, as by impregnation, it is imperative that the dye intermediate be relatively free of color and suiiiciently stable to prevent the development of background color in the copy sheet.
- the fluid is formulated to contain the solvent for transfer of the colorless materials from the imaged master and also to contain the alkali for adjusting the pH to the level Where coupling reaction can take place on the copy sheet between the components in the imaged master to form the insoluble dye on the copy sheet.
- Example I7 Fluid composition A fluid for use with an imaged master prepared with the composition of Example 16 may be formulated of the following:
- the coupler and the diazo intermediate in the coating composition remain separate sufliciently to prevent coupling reaction to form the color dyestutf.
- a composition of the type described it becomes unnecessary to make use of an alkali to adjust the pH to the level desired for coupling heretofore described so that the fluid with which the copy sheets are'wetted out to effect transfer of the components from the imaged master to the copy sheet for development of the image kthereon may be composed essentially of pure solvents such as methanol, ethanol, or combinations thereof.
- a water insoluble permanent clean dye s formed in the imaged areas of the copy sheet.
- the coupler or the diazo dye forming compound may be contained in the carbon coating composition, as illustratedin Examples 1 and 6,
- the coupler for use with cotip-l sitions of the type set forth in Examples 1 and 6 or the diazo component for use with compositions of Examples 1l and 12 may be disposed in the base sheet, but, in any event, at least one of the components for developing the dye must be contained in the imaging material transferred by carbon or by typewriter or by writing ink to the master.
- such dye forming components may be incorporated by conventional coating or impregnating systems or by incorporating the component as an ingredient in thc ber containing slurry from which the copy sheet is formed. Under these circumstances and under circumstances where the component is applied as a part of the uid over the entire surface of the copy sheet, it is desirable that the components n combination with the alkali be sufficiently stable to avoid the development of background color on the copy sheet.
- V The concepts of this invention may also be adapted for use Vin a gelatin process wherein the imaging composition is fonnulated of the following:
- the master imaged with the diazo containing composition is placed and impressed on a gelatin bed.
- the moist master sheet is then removed.
- a copy sheet previously coated with the solution of Example 20 is pressed into surface contact with the imaged gelatin bed. Coupling results in the copy sheet to form the water insoluble diazo dyestutf.
- dye systems such as the lenco dyes separable into substantially colorless dye forming components which are water and alcohol soluble and one of which may be embodied as a component in the imaging or carbon coating material to form the imaged master and the other in the fluid or in the copy sheet for reaction with the component in the imaging material may be used to form the dye upon transfer in the copy sheet.
- the lenco dyes separable into substantially colorless dye forming components which are water and alcohol soluble and one of which may be embodied as a component in the imaging or carbon coating material to form the imaged master and the other in the fluid or in the copy sheet for reaction with the component in the imaging material may be used to form the dye upon transfer in the copy sheet.
- Example 23 Percent Carnauba wax 12.0 Microcrystalline wax 10.0 Petrolatum 12.0 Mineral oil 15.0 Leuco base of malachite green 51.0
- a uid for use in combination with the above to develop the malachite green dye in the copy Sheet may be formulated of the following:
- a iluid for use in combination with the composition of Example 25 and with which the copy sheet may be wetted to form'the dye color therein is formulated of the following:
- a fluid composition for use in wetting a copy sheet to develop a dye therein by reaction with the active ingredient in the imaging composition of Example 27 may contain the following:
- Example 28 Percent Aniline 20 Glacial acetic acid It will be further understood that the concepts of this invention may be practiced by the use of imaging materials in the form of typewriter ribbons, writing ink, drawing crayon or the like embodying one of more of the substantially colorless dye forming components of the type described for preparation of the imaged master and that other components for completing the reaction to form the dyestui may be placed in the uid or in the copy sheet for reaction to develop the dyestuff as an incidence to the transfer of the dye forming component from the imaged master to the copy sheet.
- the composition kof such inking materials or crayons may be formulated with a conventional base containing the dye forming component in relatively high proportion.
- the master sheet being free of color, may be handled in the normal manner without dirtying ones hands or clothing and that it may be led away for subsequent use to produce additional copies without loss of definition or quality of the copy produced.
- hectograph is intended to include gelatin systems and spirit duplicating systems of the types described.
- a transfer sheet for the preparation of an imaged duplicating master comprising a base sheet and a composition, the major proportion of which exists as a coating on the surface of the base sheet to permit substantially complete transfer therefrom, said composition containing a dye forming component consisting essentially of from 2O to 75 percent by weight of a water and alcohol soluble diazo dye intermediate substantially free of color.
- a transfer sheet for the preparation of an imaged duplicating master comprising a base sheet and a composition, themajor proportion of which exists as a coating on the surface of the base sheet to permit substantially complete transfer therefrom, said composition containing a dye forming component consisting essentially of from 20 to 75 percent by weight of a coupler soluble in a medium selected from the group consisting of water and alcohol and mixtures thereof and capable of reaction with a diazo vdye intermediate at a pH above 3.5 in the development of an azo dyestul.
- a transfer sheet for the preparation of an imaged duplicating master comprising a base sheet and a composition, the major proportion of which exists as a coating (inthe surface of the base sheet to permit substantially complete transfer therefrom, said composition containing a substantially colorless water and alcohol soluble diazo intermediate stabilized against coupling reaction to form the dyestutf at a pH below 3.5 and a water and alcohol soluble coupler capable of reaction with the intermediate at a pH above 3.5 inthe formation ofan azo dyestui.
- a transfer sheet for the preparation of an imaged duplicating master comprising a base sheet and a composition, the major proportion of which exists as a coating on the surface of the base sheet to permit substantially complete transfer therefrom, said composition containing aromatic phenol capable of coupling with diazo compounds to form azo dyestuffs.
- a transfer sheet for the preparation of an imaged duplicating master comprising a base sheet and a composition, themajor proportion of which exists as a coating on the surface of the base sheet to permit substantially complete' transfer therefrom, said composition containing from to 75 percent by weight of a water and alcohol soluble stabilized salt of a diazo intermediate selected from the group of compounds having the general formula C Ha and
- a transfer sheet for the preparation of an imaged duplicating master comprising a flexible base sheet and a continuous coating having its major proportion existing as a coating on the surface of the base sheet with minimum penetration into the sheet thereby to permit substantially complete transfer from the surface thereof, said coating containing a substantially colorless soluble diazo, a soluble coupler capable of reaction with the diazo to form a substantially water insoluble azo dyestulf at a pH above 3.5 and an acidic medium to adjust the pH of the coating below 3.5.
- a transfer sheet for the preparation of an imaged duplicating master comprising a paper base sheet and a continuous coating on the base sheet capable of transfer from the base sheet to a master sheet upon the application of force on the uncoated side comprising a wax base containing a water and alcohol soluble diazo, a water and alcohol soluble coupler capable of reaction with the diazo to form a substantially water insoluble azo dyestuff at a pH above 3.5 and an acidic medium to adjust the pH of the coating below 3.5.
- a transfer sheet for use in the manufacture of an imaged duplicating master free of color transfer value comprising a paper base sheet, a continuous transfer coating on the base sheet formed of a Wax base containing a 'lil substantially colorless-stabilized water' and alcoli'oll soluble'- diazo having the general formula a water and alcohol soluble coupler capable of reaction with the diazo at a pH above 3.5 to form an azo dye, and an acidic substance to maintain the pH of the coating composition below a pH of 3.5.
- a transfer sheet for use in the preparation of an imagedy duplicating master free of color transfer value comprising a paper base sheet, a continuous transfer coating on the base sheet formed of a wax base containing 20-75 percent by weight of a stabilized substantially colorless stabilized soluble diazo having the general formula in which the group is selected from the group consisting of 10.
- a transfer sheet for use in the preparation of an imaged duplicating master free of color transfer value comprising a paper base sheet and a continuous coating on the base sheet capable of substantially complete displacement in imaging areas onto the master and formed of a wax base containing from 20-75 per cent by weight of a water and alcohol soluble phenol coupler capable of reaction with a diazo under alkaline conditions to form an azo dyestuif.
- a transfer sheet for use in the preparation of an imaged duplicating master comprising a paper base sheet a composition forming a continuous coating on the base sheet with the major proportion thereof existing as a coating on the surface of the base sheet with minimum penetration therein whereby the coating is capable of substantially complete transfer to the master in imaging areas and in which the coating composition is formed of a wax base composition containing from 20-75 percent by weight of a water and alcohol soluble diazo dye intermediate substantially free of color.
- a transfer sheet for use'in the preparation of an imaged duplicating master comprising a paper base sheet, a continuous transfer coating on the base sheet formed of a wax base containing 20-75 percent by weight of a water and alcohol soluble coupler capable of reaction with a diazo under alkaline conditions to form an azo dyestuff.
- a transfer sheet for use in the preparation of an imaged duplicating master from which copies may be produced on copy sheets comprising a paper base sheet and a continuous releasable coating on the base sheet containing a high concentration of dye forming components consisting essentially of a substantially colorless and soluble diazo dye intermediate, and a substantially colorless coupler capable of ⁇ reaction with the dye at pH above 3.5 to form an azo dyestufr on the copy sheet, the coating composition having a pH below 3.5 to prevent coupling.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Color Printing (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
- Coloring (AREA)
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL94963D NL94963C (fr) | 1952-05-13 | ||
NLAANVRAGE7301580,A NL178293B (nl) | 1952-05-13 | Kolom voor het met elkaar in aanraking brengen van vloeistof en damp. | |
BE519125D BE519125A (fr) | 1952-05-13 | ||
US287616A US2748024A (en) | 1952-05-13 | 1952-05-13 | Transfer sheet for use in a hectograph duplicating process |
US297568A US2634677A (en) | 1952-05-13 | 1952-07-07 | Azo dye duplicating process |
US304207A US2743191A (en) | 1952-05-13 | 1952-08-13 | Method for manufacturing transfer sheets for spirit duplication |
GB8950/53A GB737605A (en) | 1952-05-13 | 1953-03-31 | Improvements in or relating to planographic systems of reproducing multiple copies |
CH320777D CH320777A (de) | 1952-05-13 | 1953-04-07 | Vervielfältigungsverfahren |
US348124A US2798427A (en) | 1952-05-13 | 1953-04-10 | Duplicating process |
FR1077244D FR1077244A (fr) | 1952-05-13 | 1953-04-13 | Procédé de reproduction de copies et matières utilisées dans ce procédé |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US287616A US2748024A (en) | 1952-05-13 | 1952-05-13 | Transfer sheet for use in a hectograph duplicating process |
US297568A US2634677A (en) | 1952-05-13 | 1952-07-07 | Azo dye duplicating process |
US348124A US2798427A (en) | 1952-05-13 | 1953-04-10 | Duplicating process |
Publications (1)
Publication Number | Publication Date |
---|---|
US2748024A true US2748024A (en) | 1956-05-29 |
Family
ID=27403731
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US287616A Expired - Lifetime US2748024A (en) | 1952-05-13 | 1952-05-13 | Transfer sheet for use in a hectograph duplicating process |
US297568A Expired - Lifetime US2634677A (en) | 1952-05-13 | 1952-07-07 | Azo dye duplicating process |
US348124A Expired - Lifetime US2798427A (en) | 1952-05-13 | 1953-04-10 | Duplicating process |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US297568A Expired - Lifetime US2634677A (en) | 1952-05-13 | 1952-07-07 | Azo dye duplicating process |
US348124A Expired - Lifetime US2798427A (en) | 1952-05-13 | 1953-04-10 | Duplicating process |
Country Status (6)
Country | Link |
---|---|
US (3) | US2748024A (fr) |
BE (1) | BE519125A (fr) |
CH (1) | CH320777A (fr) |
FR (1) | FR1077244A (fr) |
GB (1) | GB737605A (fr) |
NL (2) | NL94963C (fr) |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
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US2855280A (en) * | 1956-06-15 | 1958-10-07 | Mine Safety Appliances Co | Colorimetric determination |
US2862832A (en) * | 1956-01-09 | 1958-12-02 | Dennison Mfg Co | Heat transfer |
US2873671A (en) * | 1955-05-11 | 1959-02-17 | Dick Co Ab | Copy process and materials for use in same |
US2950213A (en) * | 1956-08-31 | 1960-08-23 | Gen Aniline & Film Corp | Hectograph carbon paper |
US2974585A (en) * | 1958-07-07 | 1961-03-14 | Columbia Ribbon & Carbon | Duplicating |
US2995466A (en) * | 1959-08-07 | 1961-08-08 | Minnesota Mining & Mfg | Heat-sensitive copy-sheet |
US2995465A (en) * | 1959-08-07 | 1961-08-08 | Minnesota Mining & Mfg | Copy-sheet |
US3011905A (en) * | 1959-09-09 | 1961-12-05 | Columbia Ribbon & Carbon | Manifold system comprising reactant donor and receptor sheets |
US3035935A (en) * | 1958-12-01 | 1962-05-22 | Wagner Guenter | Hectographic coloring paper having a transfer coat containing lower alkyl mercapto triphenyl carbinol |
US3076406A (en) * | 1954-09-28 | 1963-02-05 | Dick Co Ab | Duplicating method and element for use therein |
US3100702A (en) * | 1960-03-30 | 1963-08-13 | Eastman Kodak Co | Dry processed photothermographic printing plate and process |
US3220859A (en) * | 1960-11-21 | 1965-11-30 | Itek Corp | Data processing materials |
US3262386A (en) * | 1959-11-23 | 1966-07-26 | Little Inc A | Duplicating method |
US3355295A (en) * | 1964-02-11 | 1967-11-28 | Eastman Kodak Co | Nucleated vesicular film |
US3446683A (en) * | 1965-08-11 | 1969-05-27 | Lloyd L Dean | Method of transferring and firing visible designs |
US3453112A (en) * | 1959-11-23 | 1969-07-01 | Bauchet & Cie Ets | Heat-developable diazotype material |
US3957495A (en) * | 1973-05-26 | 1976-05-18 | Pilot Man-Nen-Hitsu Kabushiki Kaisha | Solid writing material |
US3962526A (en) * | 1974-07-23 | 1976-06-08 | The Mazer Corporation | Tissueless pre-printed spirit duplicating masters |
US3979550A (en) * | 1974-01-18 | 1976-09-07 | The Mazer Corporation | Pre-printed latent image spirit duplicating masters |
US4005237A (en) * | 1974-07-23 | 1977-01-25 | The Mazer Corporation | Non-bleed pre-printed spirit duplicating masters |
US4050945A (en) * | 1974-07-08 | 1977-09-27 | Yoshio Suzuki | Heat-sensitive color-producing compositions and articles using same |
US4111702A (en) * | 1969-05-06 | 1978-09-05 | Minnesota Mining And Manufacturing Company | Hidden entry or latent image methods and systems |
US4964910A (en) * | 1989-05-30 | 1990-10-23 | Repeat-O-Type Manufacturing Corporation | Transfer fluid for spirit duplicating systems |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2733154A (en) * | 1956-01-31 | Polishing compositions | ||
US2770534A (en) * | 1949-03-16 | 1956-11-13 | Printing Arts Res Lab Inc | Method and material for making overlay masks |
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NL178293B (nl) * | 1952-05-13 | Shell Int Research | Kolom voor het met elkaar in aanraking brengen van vloeistof en damp. | |
US2807545A (en) * | 1952-07-18 | 1957-09-24 | Dick Co Ab | Process of applying a diazotype photoprinting material to a base and the resultant article |
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US2748013A (en) * | 1953-06-05 | 1956-05-29 | Sinclair Refining Co | Petroleum microcrystalline wax coating comoposition |
US2969015A (en) * | 1953-07-14 | 1961-01-24 | Dick Co Ab | Method of producing a spirit master from a positive and a duplicating process with same |
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US2872863A (en) * | 1954-12-02 | 1959-02-10 | Columbia Ribbon & Carbon | Hectograph duplicating |
US2903964A (en) * | 1955-01-24 | 1959-09-15 | Eastman Kodak Co | Photographic spirit duplicating process |
US2861515A (en) * | 1955-02-02 | 1958-11-25 | Timefax Corp | Method of making duplicating master |
GB795869A (en) * | 1955-04-22 | 1958-06-04 | Denis Joseph O Sullivan | Improvements in or relating to methods of copy production or reproduction |
US3000298A (en) * | 1956-01-03 | 1961-09-19 | Sherman | Printing by diazotization |
US2939009A (en) * | 1956-02-01 | 1960-05-31 | Jack M Tien | Thermotransfer duplicating process |
US2935938A (en) * | 1956-04-17 | 1960-05-10 | Eugene Lefebure | Methods of copy reproduction |
US2856283A (en) * | 1956-05-07 | 1958-10-14 | Eastman Kodak Co | Photographic emulsion |
US2972547A (en) * | 1957-08-05 | 1961-02-21 | Antioch College | Acyl hydrazine compositions and methods of producing color therewith |
DE1116970B (de) * | 1958-04-19 | 1961-11-09 | Wilhelm Ritzerfeld | Behandlungsgeraet fuer belichtete Flachdruckformen mit einer Gelatineschicht |
US2967784A (en) * | 1958-05-02 | 1961-01-10 | Columbia Ribbon Carbon Mfg | Thermographic copying paper |
US3077831A (en) * | 1958-05-20 | 1963-02-19 | Ritzerfeld Wilhelm | Apparatus for printing with ink requiring activation |
US3096189A (en) * | 1958-12-10 | 1963-07-02 | Allied Chemical Comporation | Duplicating sheet and colored coating compositions therefor |
IT631615A (fr) * | 1960-02-26 | |||
US3181462A (en) * | 1961-02-27 | 1965-05-04 | Columbia Ribbon & Carbon | Photohectographic duplicating |
US3202510A (en) * | 1961-07-11 | 1965-08-24 | Frederick Post Co | Production of encapsulated light-sensitive diazotype compositions and coatings |
US4057388A (en) * | 1972-12-01 | 1977-11-08 | Ciba-Geigy Ag | Dry heat process for dyeing and printing organic material which can be dyed with cationic dyestuffs |
USRE30797E (en) * | 1977-11-09 | 1981-11-17 | Scott Paper Company | Associated dye salts and method of forming colored indicia therewith |
USRE30803E (en) * | 1977-11-09 | 1981-11-24 | Scott Paper Company | Colorless recording paper |
US4304183A (en) * | 1978-06-26 | 1981-12-08 | A. B. Dick Company | Latent image-multiple copy process |
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US3076406A (en) * | 1954-09-28 | 1963-02-05 | Dick Co Ab | Duplicating method and element for use therein |
US2873671A (en) * | 1955-05-11 | 1959-02-17 | Dick Co Ab | Copy process and materials for use in same |
US2862832A (en) * | 1956-01-09 | 1958-12-02 | Dennison Mfg Co | Heat transfer |
US2855280A (en) * | 1956-06-15 | 1958-10-07 | Mine Safety Appliances Co | Colorimetric determination |
US2950213A (en) * | 1956-08-31 | 1960-08-23 | Gen Aniline & Film Corp | Hectograph carbon paper |
US2974585A (en) * | 1958-07-07 | 1961-03-14 | Columbia Ribbon & Carbon | Duplicating |
US3035935A (en) * | 1958-12-01 | 1962-05-22 | Wagner Guenter | Hectographic coloring paper having a transfer coat containing lower alkyl mercapto triphenyl carbinol |
US2995466A (en) * | 1959-08-07 | 1961-08-08 | Minnesota Mining & Mfg | Heat-sensitive copy-sheet |
US2995465A (en) * | 1959-08-07 | 1961-08-08 | Minnesota Mining & Mfg | Copy-sheet |
US3011905A (en) * | 1959-09-09 | 1961-12-05 | Columbia Ribbon & Carbon | Manifold system comprising reactant donor and receptor sheets |
US3453112A (en) * | 1959-11-23 | 1969-07-01 | Bauchet & Cie Ets | Heat-developable diazotype material |
US3262386A (en) * | 1959-11-23 | 1966-07-26 | Little Inc A | Duplicating method |
US3100702A (en) * | 1960-03-30 | 1963-08-13 | Eastman Kodak Co | Dry processed photothermographic printing plate and process |
US3220859A (en) * | 1960-11-21 | 1965-11-30 | Itek Corp | Data processing materials |
US3355295A (en) * | 1964-02-11 | 1967-11-28 | Eastman Kodak Co | Nucleated vesicular film |
US3446683A (en) * | 1965-08-11 | 1969-05-27 | Lloyd L Dean | Method of transferring and firing visible designs |
US4111702A (en) * | 1969-05-06 | 1978-09-05 | Minnesota Mining And Manufacturing Company | Hidden entry or latent image methods and systems |
US3957495A (en) * | 1973-05-26 | 1976-05-18 | Pilot Man-Nen-Hitsu Kabushiki Kaisha | Solid writing material |
US3979550A (en) * | 1974-01-18 | 1976-09-07 | The Mazer Corporation | Pre-printed latent image spirit duplicating masters |
US4050945A (en) * | 1974-07-08 | 1977-09-27 | Yoshio Suzuki | Heat-sensitive color-producing compositions and articles using same |
US3962526A (en) * | 1974-07-23 | 1976-06-08 | The Mazer Corporation | Tissueless pre-printed spirit duplicating masters |
US4005237A (en) * | 1974-07-23 | 1977-01-25 | The Mazer Corporation | Non-bleed pre-printed spirit duplicating masters |
US4964910A (en) * | 1989-05-30 | 1990-10-23 | Repeat-O-Type Manufacturing Corporation | Transfer fluid for spirit duplicating systems |
Also Published As
Publication number | Publication date |
---|---|
GB737605A (en) | 1955-09-28 |
BE519125A (fr) | |
NL178293B (nl) | |
US2634677A (en) | 1953-04-14 |
US2798427A (en) | 1957-07-09 |
NL94963C (fr) | |
CH320777A (de) | 1957-04-15 |
FR1077244A (fr) | 1954-11-05 |
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