Abstract:
A process for diazo-type multicolor reproduction according to which it is possible to obtain multi-colored copies in which portions corresponding to predetermined portions of an original area colored selectively in different hues without substantial mingling of colors, by conducting the heat transfer at relatively low temperatures (for instance, at 60* - 80*C.), and a color former to be used in such process, which comprises a thermosublimative coupler and a thermosublimative, organic, solid transfer promotor having no coupling property in itself.
Abstract:
A process for the diazo-type multicolor reproduction which comprises (A) exposing to light a diazo-type photosensitive material having a photosensitive layer containing at least one diazonium salt (c) and a coupler (b) having a substantially lower rate of coupling with the diazonium salt (c) than that of resorcin, said coupler being present in the photosensitive material in an amount of not greater than 1 mole per mole of said diazonium salt (c), and (B) heating a layer of at least one thermovolatile or thermosublimative coupler (a) disposed in a face-to-face contact with said photosensitive material at a predetermined portion, said steps being carried out coincidentally or in the order of (A) to (B) or (B) to (A), and then developing the exposed photosensitivematerial. photosensitive material.
Abstract:
A process for the diazo-type multicolor reproduction according to which it is possible to obtain multi-colored copies in which portions corresponding to predetermined portions of an original are colored selectively in different hues without substantial mingling of colors, by conducting the heat transfer at relatively low temperatures (for instance, at 60*-80*C.), and a color former to be used in such process, which comprises a thermosublimative coupler and a thermosublimative, organic, solid transfer promotor having no coupling property in itself.
Abstract:
A transfer sheet for electrostatically transferring thereon an electrically conductive or electrically semi-conductive toner in electrostatic photography or electrostatic printing, which comprises a substrate and a toner-receiving layer formed on at least one surface of the substrate, which toner-receiving layer contains a composition comprising (A) 100 parts by weight of thermoplastic acrylic-styrene copolymer and (B) 10 to 100 parts by weight of dry method finely divided silica is disclosed. In this transfer sheet, the electric resistance can be maintained at a high level even under high humidity conditions, and a toner image can be transferred on this transfer sheet at a high transfer efficiency without broadening of contours of the image. This transfer sheet has feel and touch quite similar to those of ordinary paper and is very excellent in graphic characteristics.
Abstract:
A transfer sheet for electrostatically transferring thereon an electrically conductive or electrically semi-conductive toner in electrostatic photography or electrostatic printing, which comprises a substrate and a toner-receiving layer formed on at least one surface of the substrate, which toner-receiving layer contains a composition comprising (A) a thermoplastic acrylic polymer having a carboxyl group content of 2 to 30 % by weight and (B) a thermosetting resin reactive with the acrylic polymer (A), and a process for preparing this transfer sheet by using an aqueous coating composition are disclosed. In this transfer sheet, the electric resistance can be maintained at a high level even under high humidity conditions and a toner image can be transferred on this transfer sheet at a high transfer efficiency.
Abstract:
A transfer sheet for electrostatically transferring thereon an electrically conductive or electrically semi-conductive toner in electrostatic photography or electrostatic printing, which comprises a substrate and a toner-receiving layer formed on at least one surface of the substrate, which toner-receiving layer contains a composition comprising (A) a thermoplastic acrylic polymer having a carboxyl group content of 2 to 30% by weight and (B) a thermosetting resin reactive with the acrylic polymer (A), is produced by coating on at least one surface of the substrate an aqueous composition containing the thermoplastic acrylic polymer in the form of an aqueous emulsion and the thermosetting resin in the form of an aqueous solution and drying the coated substrate to form a toner-receiving layer on the surface of the substrate. In this transfer sheet, the electric resistance can be maintained at a high level even under high humidity conditions, and a toner image can be transferred on this transfer sheet at a high transfer efficiency.
Abstract:
1286399 Electro-photography MITA INDUSTRIAL CO Ltd 30 April 1970 20949/70 Heading G2H A liquid developer comprises a dispersion in a liquid hydro-carbon of an anthraquinone, azo or phthalocyanine colorant substituted by an alkyl, alkoxy, thioalkoxy, alkylamino, alkylcarbonyl, alkanamido, N-alkylsulphonamido, alkarylamino, alkarylcarbonylamino, N-alkaryl sulphonamido, N-alkylcarbonyl sulphonamido, alkylbenzenesulphonamido, alkoxyarylamino or alkylaminotriazinylamino group having 10-24 carbon atoms in each alkyl portion.