Kodak Polychrome Graphics, Gmbh

Lee Korionoff

Kevin Barry Ray

Paul R West

Ting Tao

Negative working imageable compositions and imageable elements comprising a layer of the imageable composition over a support are disclosed. The imageable compositions comprise a free-radical polymerizable system and an effective amount of curcumin. The curcumin is effective as an antihalation agent, but does not substantially reduce the photospeed of the imageable composition.

Antihalation dye for negative-working printing plates

Infrared absorbing compounds that absorb at 800 nm&#xb1;50 nm and at 1050 nm&#xb1;50 nm, the two different regions of the infrared spectrum typically used for imaging, are disclosed. Thermally imageable elements that comprise these infrared absorbing compounds can be imaged with radiation in either of these two regions of the infrared spectrum. The elements are especially useful as lithographic printing plate precursors.

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Fort Collins, CO, United States of America

Lee Korionoff