Marks that print outside the image area of a document and are used as guides for aligning each color when printing process separations.
a marking of some sort on both layers outside the field where final cropping will occur
A mark added to a document for color printing to aid the commercial printer in lining up copies of the same page.
Marks, printed in the page margin, that show the printer where to align color overlays or separations in the publication.
A mark applied to glass and ceramic wares from 1842 to 1883. This mark and the numerals / numbers / letters incorporated in it indicated that the design had been registered with the Patent Office. An item may have carried the mark for many years after its initial registration date thus making the mark an unreliable dating method. The South African digger / collector will be fortunate to find anything bearing a diamond registration mark other thyan the "Square Top" red ink bottle pictured as diamond registration marks were replaced with registration numbers after 1884. This system is fully explained on pg 18,19 of Bottles & Bygones. click to view diamond registration
A mark printed on a material using a color that provides optical contrast to the material color. The mark is sensed as it moves past a photoelectric color sensor. Registration marks are used for cutoff controls, as in a wrapping or bagging operation, or for products positioning in a tube end crimping process.
Crosshairs or other graphic devices applied to originals prior to reproduction for positioning films in proper register (alignment).