Abstract: A thermally-sensitive color-forming composition is disclosed which comprises chromogenic material and certain acidic developer material. Record material comprising this color-forming composition exhibits improved color-forming efficiency and/or image density.

Abstract: A record member comprising a developer composition comprising an addition product of a phenol and a diolefinic alkylated or alkenylated cyclic hydrocarbon is disclosed. These addition products are particularly useful as color developers for basic chromogenic material.

Abstract: A process is disclosed for performing encapsulation, en masse, by an in situ polymerization reaction to yield capsule wall material. The reaction comprises the polymerization of urea and formaldehyde, or monomeric or low molecular weight polymers of dimethylol urea or methylated dimethylol urea, melamine and formaldehyde, monomeric or low molecular weight polymers of methylol melamine or methylated methylol melamine, in an aqueous vehicle and the reaction is conducted in the presence of certain acrylic acid copolymers. The disclosed encapsulation process provides improved resistance of the emulsion of intended capsule core material to destabilization and permits the manufacture of microcapsules with improved drop size distribution, improved resistance to frictional smudge damage and enhanced impermeability.

Abstract: A record member comprising a developer composition comprising 2,2-bis(4-hydroxyphenyl)-5-methylhexane is disclosed. This compound is particularly useful as a color developer for basic chromogenic material.

Abstract: An apparatus and process are disclosed for an efficient decurling system wherein a web material is introduced into a steam environment such that the distance between the web and the steam source is maintained substantially constant.

Abstract: A record member comprising a developer composition comprising a glass comprising a biphenol color developer and a resinous material is disclosed. These compositions are particularly useful as color developers for basic chromogenic material.

Abstract: A record member comprising a developer composition comprising a zinc-modified addition product of a phenol and a diolefinic alkylated or alkenylated cyclic hydrocarbon is disclosed. These addition products are particularly useful as color developers for basic chromogenic material.

Abstract: A thermally-sensitive color-forming composition is disclosed which comprises chromogenic material, acidic developer material and a hydroxyanilide compound. Record material comprising this color-forming composition exhibits an absence of image bloom and improved color-forming efficiency and/or image density.

Abstract: An improved gas knife wherein a coating which is generally uniform across the width of a paper web can be applied thereto. The gas knife contains a flexible gas flow modification member located adjacent to the inside of the nozzle of the gas knife for modifying the flow of gas whereby the coating weight can be adjusted differentially across a web being coated.

Abstract: A thermally-sensitive color-forming composition is disclosed which comprises chromogenic material and certain acidic developer material. Record material comprising this color-forming composition exhibits substantially improved performance in certain Group 3 facsimile equipment.

Abstract: A process is disclosed for performing encapsulation, en masse, by an in situ polymerization reaction to yield capsule wall material. The reaction comprises the polymerization of urea and formaldehyde, monomeric or low molecular weight polymers of dimethylol urea or methylated dimethylol urea, melamine and formaldehyde, monomeric or low molecular weight polymers of methylol melamine or methylated methylol melamine, in an aqueous vehicle and the reaction is conducted in the presence of mixtures of poly-electrolyte material, esp. poly(acrylic acid), and polystyrene sulfonic acid and/or salts thereof in certain critical proportions. The disclosed encapsulation process provides improved resistance of the emulsion of intended capsule core material to destabilization and permits the manufacture of micro-capsules with improved drop size distribution.

Abstract: A two-coat record sheet material is disclosed. This record sheet material comprises a base coat comprising an oil-soluble phenol-formaldehyde novolak resin and a topcoat comprising substantially nonreactant pigment material, but no color developer material. The nonreactive topcoat eliminates the accumulation of contaminants on the fuser roll of copier/duplicators produced by prior art record sheet material.

Abstract: A thermally-sensitive color-forming composition is disclosed which comprises chromogenic material, acidic developer material and a phenylhydroxynaphthoate compound. Record material comprising this color-forming composition exhibits improved color-forming efficiency and/or image density.

Abstract: A process is disclosed for continuously manufacturing minute capsules in a closed conduit under conditions of non-turbulent flow. The continuous microencapsulation process comprises in-line emulsification of intended capsule core material in a liquid manufacturing vehicle comprising negatively-charged polyelectrolyte material and methylol melamine or etherified methylol melamine followed by conduction of the emulsion, under non-turbulent flow conditions, through a tubular reactor maintained at a single, elevated temperature.

Abstract: A process for recovering pulp from pressure-sensitive carbonless copying paper waste is disclosed. This process includes defibrating the waste without substantial rupture of the microcapsules, treating the defibrated waste with an enzyme for starch saccharification and separating the fibers from the released microcapsules by means of a sidehill screen equipped with a washing shower.

Abstract: A process is disclosed for performing encapsulation, en masse, by an in situ polymerization reaction to yield capsule wall material. The polymerization comprises a reaction between melamine and formaldehyde and/or polycondensation of monomeric methylol melamine or etherified methylol melamine, or a low molecular weight polymer thereof, in an aqueous vehicle and the reaction is conducted in the presence of negatively-charged, carboxyl-substituted polyelectrolyte material and certain salts, both dissolved in the vehicle. The disclosed encapsulation process permits the manufacture of microcapsules with more impermeable walls and/or lower capsule batch viscosities.

Abstract: A slitter apparatus for cutting a continuous web is disclosed comprising a slitter blade and a slitter mounting bracket. The bracket comprises a threaded depth-post assembly, a spring unit for maintaining the desired tension at the cutting surface, and a dove-tail spring-loaded base.

Abstract: A thermally-responsive transparent film is disclosed which comprises certain chromogenic material and certain color developer material. With this film marks are developed in response to the application of heat to form an image. These images can be erased by the action of certain liquids or vapors. The imaged and erased states are fixed under a range of environmental conditions. This film finds particular utility as a reusable projection transparency.

Abstract: Heated clothing includes:(a) multiple clothing sections adapted to cover different portions of the human body,(b) electrical wires carried by such sections and including bus wires and heater wires, and(c) circuitry for controlling battery powered electrical current flow to such wires, and including switch structure connected in series with one or more of the heater wires for interrupting current flow thereto without requiring disconnection of bus wires.

Abstract: A reactive dielectric record material is disclosed which comprises certain chromogenic material and certain phenolic material. This record material produces images by means of a dielectric process wherein two color-forming agents contained within a reactive image-bearing surface are brought into reactive, color-producing contact by means of colorless toner material.