Patent ID: 6766764
Filing Date: 2004-07-27
Classification: B01J,B41M,C23C,C40B,H05K

Abstract:
An apparatus for depositing a transfer material onto a receiving substrate, the apparatus comprising:a source of pulsed laser energy with an energy density from 0.05 to 7.5 J/cm2, a receiving substrate, and a target substrate comprising a laser-transparent support having a back surface and a front surface, wherein the front surface has a coating that comprises a mixture of the transfer material to be deposited and a matrix material, wherein the matrix material has the property of being or becoming more volatile than the transfer material when exposed to pulsed laser energy, means for positioning the source of pulsed laser energy in relation to the target substrate such that in operation pulsed laser energy is directed through the back surface of the target substrate and through the laser-transparent support to strike the coating at a defined location with sufficient energy to volatilize the matrix material causing the coating to desorb from the location and be lifted from the surface of the support without damaging the transfer material, means for positioning the receiving substrate in a spaced relation to the target substrate such that in operation the matrix material, or decomposition products thereof, in the desorbed coating migrate from the space between the receiving substrate and the target substrate, and the transfer material in the desorbed coating is deposited at a defined location on the receiving substrate.