Flat steel plate intaglio
Flat steel plate intaglio is a completely unique technology of our postal stamp flat steel plate printing. This printing tradition of multicolor postal stamps rises the admiration of philatelists worldwide for many years due to its quality as well as printing method. Also the first day covers (FDC) and postal stationery. The quality of postal stamps printed by this method corresponds to the high mastery of printing masters and precise work of the printing machine operators. Postal stamps are printed color by color and loading of individual mini sheets is done by hand, which is very challenging method requiring high degree of skill and thoroughness in order to reach perfect color register.
To prepare a printing form for rotogravure printing in combination of rotogravure and intaglio is more complex than for modern printing machines. Reproduction of the engraving to the printing cylinder is made mechanically for intaglio and photo-mechanically for gravure, which does not guarantee the perfect color register. Another unfavorable element is that for intaglio, steel cylinders are used, and for rotogravure cylinders covered with Ballard skin (copper) are used. If you add to the group of these problematic circumstances the material on which the printing is to be done, than it is only perfect preparation and precision while printing can eliminate these circumstances to reasonable level.