PRINTING ASSEMBLY, PRINTING PRODUCT AND ITS PROTECTION METHOD Russian patent published in 2018 - IPC B42D25/00 B41F13/00 

FIELD: printing industry.

SUBSTANCE: invention relates to production of the protected printed products. Printing unit comprises at least two ink sections, installed with possibility of adjustment in two planes relative to the numbering device and ink sequential application onto the numbering device numbering head. Ink section consists of inking element with single ink and three transmitting the ink shafts located above each other, wherein the two shafts have the rubber coating, and the middle one is the rilsan one, one of the shafts is configured to translationally move along its axis during rotation. Printing product protection method involves performance of numbering using the letterpress printing method, with the printing characters prints production with at least two inks with the border across or along the printed characters arrangement axis. Numbered printed product with the forgery protection element, printing method and individual features of at least two inks.

EFFECT: invention allows to increase the printing products protection degree.

8 cl, 7 dwg