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Marginal Markings Committee Production Markings |
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Marginal markings were used as an
integral part of the production process, as well as generated by the process
itself. Many of these markings
originated when sheets were produced by manual operations. As technology advanced and printing speeds
increased, production became automated and the markings have changed.
Production Markings contains five subcategories: A. Craftsmen’s Initials: The initials of
siderographers, plate finishers and printers who made and used the plates. B. Flat Plate Production Markings: Guide
lines and arrows used to facilitate perforating and cutting sheets into
panes. C. Rotary Plate Production Markings:
Markings used to facilitate perforating and cutting sheets into panes. D. Color Controls: Marginal markings used
for the production of bi- and multi-color issues. E. Press Identification: The particular
press being used by a plate was identified on that plate.
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