Notes from the Past

Photo-Litho or Photo-Lithography

A true 'surface' or planographic printing process, a method intermediate to photo-engraving and photogravure.  Again the original drawing is photographed and printed down on sensitised zinc or aluminium plates or foil, and, by the 'step and repeat' camera or printing frame, printed down as many times as are required to print a sheet of stamps.  The images are developed up, hardened, and inked up, the resultant design having now an affinity for the greasy ink used.  The grained surface of the plate is kept damp and thus the clear parts repel ink.  It is a process especially suited for multi-coloured printing.  See also 'Lithography', 'Printing', and allied subjects.
 
 
 
- R. J. Sutton 6th edition revised by K. W. Anthony
The Stamp Collector's Encyclopaedia
Published 1966
 Posted March 7, 2000

Index of 508 Notes from the Past

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