Patent ID: 6645681
Filing Date: 2003-11-11
Classification: B41M,G02B,G02F

Abstract:
A color filter made by a process for adjusting the focus of an imaging laser for imaging a thermally imageable element having a thermally imageable layer comprising the steps of:(a) providing an imaging unit having a non-imaging laser and an imaging laser, the non-imaging laser having a light detector which is in communication with the imaging laser; (b) contacting a receiver element with the thermally imageable element in the imaging unit, the thermally imageable element comprising a light attenuated layer; (c) actuating the non-imaging laser to expose the thennally imageable element and the receiver element to an amount of light energy sufficient for the light detector to detect the amount of light reflected from the light attenuated layer of the thermally imageable element and the receiver element; (d) actuating the imaging laser to focus the imaging laser in order to imagewise expose the thermally imageable element to an amount of light energy sufficient for imagewise transfer of the thermally imageable layer to the receiver element, the focus of light energy being determined by the amount of light reflected from the light attenuated layer of the thermally imageable element and communicated to the imaging laser by the light detector; and (e) separating the thermally imageable element from the receiver element to form a color filter comprising the receiver element with the imagewise exposed areas of the thermally imageable layer transferred thereto.