Hoechst Aktiengesellschaft

Fritz Uhlig

Gerhard Sprintschnik

Ine Gramm

Kurt A Wehlmnn

Gunter Berghauser

This invention relates to an improvement in a light-sensitive recording material comprising a support and a light-sensitive layer including a diazonium salt polycondensation product composed of recurrent units of the general types

Process for the preparation of relief-type recordings using diazonium

This invention relates to a light-sensitive copying material comprising a coating support and an optically homogeneous light-hardenable coating which contains a condensation product of an aromatic diazonium salt and a water-insoluble macromolecular polymer, wherein the coating is applied from a stable dispersion of the water-insoluble polymer under conditions such that after drying an optically homogeneous coating is formed. The invention also relates to a process for the manufacture of a light-sensitive copying material containing the optically homogeneous light-hardenable coating.

Process of manufacturing light-sensitive copying material based on

This invention relates to a process for the manufacture of an imaged article which comprises:

Process for the manufacture of imaged articles

This invention relates to an aluminum base material for presensitized printing plates. The aluminum has an anodically produced oxide layer on the surface thereof, which layer is at least 0.0002 mm. thick, and the oxide layer is reacted with polyvinyl phosphonic acid.

Layer support for light-sensitive material adapted to be converted into

This invention relates to an improvement in the process for the preparation of a planographic printing form in which a recording material comprising a support of anodically oxidized aluminum and a recording layer thereon is imagewise irradiated with a laser beam, thereby rendering the irradiated portions of the recording layer oleophilic and/or insoluble, and the non-irradiated portions of the recording layer are then removed, where necessary, by washing with a developer liquid, the improvement comprising an oxide layer on said support weighing at least 3 grams per square meter.

Process for the preparation of planographic printing forms using laser

This invention relates to an improvement in the process for the production of a planographic printing form in which a carrier coated with a hydrophilic layer composed of a non-light-sensitive compound is imagewise exposed, the improvement comprising imagewise exposing the layer to laser radiation, whereby the material obtained may be used for printing in a planographic printing machine without further treatment.

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Wiesbaden, Germany

Fritz Uhlig