Patent ID: 7883826
Filing Date: 2011-02-08
Classification: B41C,G03F,Y10S

Abstract:
1. A method of making an imaged element comprising: A) imagewise exposing a negative-working imagable element having a hydrophilic substrate having thereon an imagable layer to imaging radiation having a maximum wavelength of from about 700 to about 1200 nm to form exposed and non-exposed regions in the imaged imagable layer, and B) with or without a preheat step, developing said imagewise exposed element off-press using an aqueous alkaline or organic solvent-containing developer having a pH of at least 6.5, a plate cleaner, or heated aqueous developer consisting essentially of water, to remove only said non-exposed regions of the imaged imagable layer, said negative-working imagable element being sensitive to radiation at a wavelength of from about 700 to about 1200 nm, and comprising the hydrophilic substrate having a hydrophilic surface and having thereon the imagable layer comprising: