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US 3,947,116 AGranted
Photocomposing machines
AssigneesLamson Paragon Limited, Firma Dirk Strobbe PVBA
InventorDaniel Camille Cornelius Dewaele
Life of this patent
Estimating the term…
Abstract
A photocomposing machine for producing an exposed sheet for use in the preparation of printing plates. An image is positioned on a sheet of sensitized material by having an object mounted on a carrier and driving the carrier until the position of the image is correctly positioned. The accurate positioning of the image is controlled by a grid line counting device which causes the carrier to be halted at a position corresponding to one of the grid lines of the grid line counting device.
Claims4
A photocomposing machine comprising:
- means to project an image corresponding to a portion of a copy form onto a sensitized material whereby image parts of the copy form are built up in steps onto the sensitized material, means for controlling the position of the image corresponding to said portion of the copy form onto said sensitized material including carrier means for supporting a representation of the images, drive means for moving said carrier means, pulse generating means to drive said drive means in two orthogonal directions, control means for generating signals to control said drive means and including counting means to count the number of pulses supplied to said drive means and means to stop said drive means at a selected position of a plurality of predetermined positions represented by said number of pulses when said counting means has counted to a predetermined number representing a respective position of said plurality of predetermined positions.
Dependencies are inferred from the claim text.