Patent Number: 6,165,685

Title: Thermally recordable material insensitive to white light

Abstract: The invention relates to a recording material having a substrate and a radiation-sensitive, water-insoluble layer which contains a component absorbing IR radiation and which, after the action of infrared radiation, becomes soluble or at least swellable in an aqueous alkaline developer. A top layer which is opaque to white light but transparent to radiation in the IR range and can be removed with water or an aqueous solution is present on the radiation-sensitive layer. The recording material is substantially insensitive to daylight. By imagewise exposure to IR radiation and subsequent development with an aqueous alkaline developer, it is possible to produce a printing plate for offset printing from the recording material. If the top layer is washed off beforehand, the recording can also be carried out using conventional UV radiation.

Inventors: Maerz; Karin (Gross-Gerau, DE), Haberhauer; Helmut (Taunusstein, DE), Elsaesser; Andreas (Idstein, DE), Schlosser; Hans-Joachim (Wiesbaden, DE), Grabley; Fritz-Feo (Kelkheim, DE)

Assignee: Agfa-Gevaert N.V.

International Classification: B41C 1/10 (20060101); G03C 001/76 ()

Expiration Date: 12/26/2017