Patent ID: 11878508
Assignee: KOENIG & BAUER AG
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 7:
8. A method for applying at ink and a protective fluid onto at least one substrate (10) by use of at least one intaglio gravure printing press comprising at least one gravure printing unit, the at least one gravure printing unit comprising at least one forme cylinder (03) and at least one impression cylinder (01), the at least one forme cylinder (03) comprising at least one printing plate (02) including at least one engraving, the at least one intaglio gravure printing press further comprising at least one inking unit (18), wherein:
the at least one inking unit (18) applies the ink into the at least one engraving of the at least one forme cylinder (03), or
at least one ink collecting cylinder (12) having the at least one inking unit (18) arranged thereat, applies the ink into the at least one engraving of the at least one forme cylinder (03),
the intaglio gravure printing press further comprising at least one print head (04) that is positioned to apply the protective fluid into the at least one engraving on the at least one forme cylinder (03), the method comprising:
applying, by the at least one print head (04), the protective fluid into the at least one engraving prior to applying the ink into the at least one engraving,
applying, by the at least one ink collecting cylinder (12) or the at least one inking unit (18), the ink into the at least one engraving having the protective fluid therein,
during printing, depositing concurrently the ink and the protective fluid from the at least one engraving onto the at least one substrate (10), the protective fluid forming at least one protective layer and/or at least one protective film on the ink deposited on the at least one substrate (10), and
subsequent to the printing, drying and/or curing, by at least one dryer (07), the protective fluid at least in part, the protective fluid configured to at least one of dry, be dried, cure, or be cured more quickly than the ink.