Abstract: Preprinted duplicating masters for producing printed copies, with or without spirit duplicating fluids, comprising a foundation sheet reverse printed in a predetermined pattern with an imaging material which produces copies upon the application of pressure alone, although the spirit duplicating process can be used. The imaging material is applied as a synthetic polymeric resin disperion having an ink composition therein and is subsequently heated to gel but not fuse the resin so that the ink composition will be retained therein but will be releasable and transferable in a predetermined pattern to a substrate by at least the application of pressure alone. A protective cover sheet is placed over the printing to prevent inadvertent and accidental transfer of the ink composition.

Abstract: A heat-sensitive recording paper comprising a base paper having a hot water extraction pH of about 6 to 9 having provided thereon a heat-sensitive recording layer containing an electron donating colorless dye and an electron accepting acidic material.

Abstract: An agent for protecting the surface of a lithographic printing plate which is an emulsion comprising an oil phase containing a plasticizer having a solidifying point of 15.degree. C. or less and a surfactant, and an aqueous phase having dissolved therein a hydrophilic high molecular weight compound.

Abstract: A pre-printed spirit duplicating master. A liquid ink composition composed of 40% to 62% by weight of a dye, 40% to 65% by weight of an alcohol soluble polyamid resin having a melting point in the range of 110.degree. C. to 125.degree. C., and 12% to 25% by weight of ethylene glycol is printed in reverse image on one side of a translucent paper sheet. After printing, the ink is dried to evaporate a portion of the ethylene glycol so that the dried ink contains approximately 3.0% to 6.25% by weight of ethylene glycol. The polyamid resin is soluble in alcohol so that multiple copies can be printed from the master using conventional duplicating equipment, and as the ink does not contain oils and greases there is no tendency of the ink to bleed or smear so that the masters can be bound in booklet form without the need of separating tissue sheets.

Abstract: New yellow azo pyrazolone compounds having the structure ##STR1## wherein R is halogen and R.sub.1 and R.sub.2 are hydrogen, lower alkyl or halogen. The compounds are useful as yellow dyes in heat transfer printing of synthetic fabrics.

Abstract: 3-Aryl-3-indolylphthalides, 3-aryl-3-pyrrolylphthalides and 3-aryl-3-carbazolylphthalides prepared by interaction of the appropriate 2-(heteroaryl)carbonylbenzoic acid and the appropriate phenylamine, and 3,3-bis(indolyl)phthalides prepared by the interaction of the appropriate 2-(indolyl)carbonylbenzoic acid and the appropriate indole are useful as color formers in pressure-sensitive carbonless duplicating systems, thermal marking systems and hectographic copying systems.

Abstract: Duplicate thermoplastic plates are composed of a composition comprising a 1,2-polybutadiene having a crystallinity of about 10-30% and an intrinsic viscosity of greater than about 0.7. Matrices against which the duplicate thermoplastic plates are molded are formed of material containing said 1,2-PBD and a photoinitiator or a thermo-curable catalyst. The duplicate thermoplastic plates and matrices can give a high duration and reproducibility from an original pattern bearing design or image in relief, and they are molded with ease and in a great amount without difficulty. The use of the thermoplastic plates or matrices can provide a good releasability from the matrix against which the said plates are molded and from the original pattern against which the matrices are formed.

Abstract: A lithographic printing plate which comprises using in an ink-repellent layer a polymer of a monomer or a copolymer containing said monomer, said monomer being represented by the following general formulas: ##STR1## WHEREIN: R is hydrogen or a methyl radical; R' is hydrogen or an alkyl radical having 1 to 10 carbon atoms; Rf is a perfluoroalkyl radical having 3 to 21 carbon atoms; and n is an integer of 1 to 10.

Abstract: A low cost transfer ink coating, comprising a polyhydroxy alcohol, a non-drying oil, a wax, a kaoline-type clay, and a dye, for use on a transfer sheet which is used in making master sheets for the printing of multiple copies therefrom and a method of making such transfer ink coating.

Abstract: An improved image resolution in thermo-transfer duplicating processes is accomplished by means of dispersing a plurality of thermally conductive particles in the dye-wax layer of transfer material used in such processes and applying an electrical or magnetic field to the transfer material layer sufficient to orient and align the particles parallel to the direction of the field. In this way the improved dye-wax layer of transfer material is capable of greater thermal conductivity in the direction transverse to the layer than in the lateral direction of the layer.

Abstract: A solution for treating metal surfaces is provided which is capable of cleaning (degreasing) and hydrophilically sensitizing the metal surface. The treatment solution is a synergistic improvement over conventional silicate treating solutions obtained by the addition of the ferric chelate of ethylene diamine tetra acetic acid (Fe.sup.+.sup.3 EDTA).

Abstract: The spirit duplicating masters are pre-printed on a sheet having an oleophobic surface and utilizing, if desired, a non-bleed, non-smear ink composition. The result is a pre-printed master having no problems with bleed, smear or registry. Such pre-printed masters may be formed into booklets.

Abstract: Novel means for preparing waterless lithographic printing masters by ink jet imaging means are provided. A master is provided by depositing a silicone or other material which can be rendered ink releasing on a suitable master substrate by means of an ink jet printing apparatus, and curing the silicone to an elastomeric ink releasing condition. Alternatively, an ink jet printing apparatus can be employed to deposit in image configuration, a catalyst to an uncured silicone on a master substrate, a photopolymer to a cured silicone on a master substrate which photopolymer can be cured to combine with the silicone, or an imaging light insensitive shadow fluid to a light sensitive curable silicone coated on a master substrate whereby the background nonimaged areas can be cured and the shadow fluid and underlying silicone removed to reveal the ink accepting substrate.

Abstract: A continuous ink-transfer printing system employing a hot-melt wax imaging composition supported on a strong pressure-conforming plastic film web which is continuously recoated with fresh imaging composition to replace imaging composition which is imagewise transferred at a pressure-imaging station. The system comprises an ink-coating station, a pressure-imaging station and an ink-melting station associated with the ink-coating station.

Abstract: A pre-printed spirit duplicating master containing visible imaged material and latent imaged material for use in preparing copies for self-instructional examination or work assignments. The latent images on the copy sheet are capable of being revealed with a pen containing a chemical developer and this can be done by the student in self-examination. The use of the pre-printed masters frees the teacher from the chore of preparing exams, or work assignments, making the masters, and from grading the papers.

Abstract: A copy sheet that is capable of being printed by a reaction which requires the presence of three components. One of these components is carried by a printing master and another of these components is supplied to the copy sheet immediately prior to the printing operation. The third component is carried by the copy sheet in the form of a layer provided on one side of a carrier sheet forming part of the copy sheet. The printing master is placed on a rotating drum and the layer on the carrier sheet is moistened to supply the still missing component and is thereafter urged into contact with the printing master by means of a counter-pressure roller. If, in making a series of prints on a number of copy sheets, one copy sheet in the sequence should fail to be conveyed to the printing location, the rotating printing master will contact the counter-pressure roller and apply thereto the component carried thereby.

Abstract: The spirit duplicating masters are pre-printed utilizing a non-bleed, non-smear ink composition. Typically the ink may contain cetyl alcohol, carnauba wax, a soft wax, fillers and a small amount of dye solubilizer and/or wetting agent. Such pre-printed masters may be formed into booklets without the necessity of interleaved protective layers or tissues.

Abstract: Lactones of the benzazaxanthene series based on 4-dialkylaminobenzoic acid compounds and homophthalic acid imides. The new lactones are eminently suitable as dye-forming components in the red range for pressure-sensitive recording material.

Abstract: A pressure-sensitive copying material consisting of a sheet-like base to which has been applied a coating comprising microcapsules containing dyes. The microcapsules are filled with a solution or suspension of a salt of a dye base and an organic carboxylic acid in an organic water-immiscible solvent. The copying material is distinguished by exceptional non-smudging characteristics and is particularly suitable for the production of business forms.

Abstract: A process for hectographic duplicating, and hectographic copy paper therefor, are disclosed. The hectographic copy paper is formed by applying a coating of a film-forming vehicle and a colourless dyestuff precursor which is sodium p-carboxy phenyl leucauramine, sodium p-sulphophenyl leucauramine of Michler's hydrol methyl ether. The sheets are used to type or otherwise form an imaged hectographic master sheet, which is then contacted with hectographic copy sheets moistened with a spirit duplicating fluid, with the dyestuff precursors converted into dyestuffs on the hectographic copy sheets.

Abstract: In a lithographic printing plate comprising a base and a lithographic printing surface thereon, said printing surface comprising colloidal silica and an insolubilized hydrophilic polymer, the improvement which comprises providing a positively charged colloidal silica as said colloidal silica component and, as said hydrophilic polymer, a nonionic or cationic polymer or a mixture of the same.