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US 6,270,194 B1Granted
Printing method and printing device for realizing the same
OwnerSergei Nikolaevich Maximovsky, Grigory Avramovich Radutskyinventors
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OwnerSergei Nikolaevich Maximovsky, Grigory Avramovich Radutskyinventors
Estimating the term…
The method for printing is carried out by creating pressure pulses at individual points of an ink layer which has been applied onto the surface of a continuous smooth plate, focusing a light beam of a laser on those points from the side of the opposite surface of the plate. Pressure pulses are developed due to the light hydraulic effect at the border of the surface of a plate, made of transparent material, and a layer of ink applied thereon, or due to the conversion of light radiation into acoustic when the light beam of the laser is absorbed by material which is not transparent for its wavelength. The printer has a device for deflecting the light beam over the surface of the plate to excite pressure pulses in the ink layer at points predetermined by a program.
A method for printing which comprises placing a carrier before a printing plate, applying a layer of ink onto the surface of the plate and selectively transferring the ink from predetermined points on the surface of the plate to the carrier, characterized in that the surface of the plate is continuous and smooth, the layer of ink is applied onto the surface facing the carrier, and from the side of the opposite surface a light beam from a laser is focused on the predetermined points of the layer of ink which are to be transferred onto the carrier so as to generate pressure pulses in the ink causing the ejection of a drop of the ink therefrom,
A printer comprising a printing plate, a first applicator adapted to apply a layer of ink onto the plate and a second applicator adapted to transfer ink from the plate onto a carrier, characterized in that the surfaces of the plate are continuous and smooth, the first applicator is disposed so as to apply ink onto a plate surface facing the carrier, and the second applicator comprises a light beam laser, a laser light beam focuser adapted to focus the beam on predetermined points of the ink layer from the surface side of the plate opposite to that facing the carrier, and a deflector adapted to deflect the beam over the surface of the plate, wherein the printing plate is an electrically non-conductive material which is transparent for the wavelength radiated by the laser, and wherein the surface of the plate facing the carrier comprises a material having areas which are not transparent for the wavelength radiated by the laser.
Dependencies are inferred from the claim text.