Intaglio gravure printing press and method for applying at least one printing fluid onto at least one substrate

Patent metadata

Field	Value
Publication number	US-11878508-B2
Application number	US-202017787690-A
Country	US
Kind code	B2
Filing date	Oct 26, 2020
Priority date	Jan 10, 2020
Publication date	Jan 23, 2024
Grant date	Jan 23, 2024

Abstract

In some examples, an intaglio gravure printing press includes at least one gravure printing unit having at least one forme cylinder, at least one impression cylinder, at least one inking unit and/or at least one ink collecting cylinder. Additionally, at least one assigned inking unit, at least one print head, and at least one wiping device are arranged at the at least one forme cylinder. The wiping device is arranged along the direction of rotation of the forme cylinder, and downstream from the print head when the print head is arranged at the at least one forme cylinder. In addition, the wiping device is arranged along the direction of rotation of the forme cylinder, upstream from a contact region of the forme cylinder with the impression cylinder. Alternatively, in some examples, at least one print head is arranged at the at least one impression cylinder.

First claim

The invention claimed is:

1. An 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 ), at least one impression cylinder ( 01 ), and at least one inking unit ( 18 ), wherein:
the at least one inking unit ( 18 ) is arranged at the at least one forme cylinder ( 03 ) and provides ink to the at least one forme cylinder ( 03 ), or
at least one ink collecting cylinder ( 12 ) is arranged at the at least one forme cylinder ( 03 ) and the at least one inking unit ( 18 ) is arranged at the at least one ink collecting cylinder ( 12 ), the at least one ink collecting cylinder ( 12 ) providing ink from the inking unit ( 18 ) to the at least one forme cylinder ( 03 ),
the intaglio gravure printing press further comprising at least one print head ( 04 ), which is arranged at the at least one forme cylinder ( 03 ), and which is positioned with respect to the at least one forme cylinder ( 03 ) to apply a protective fluid into at least one engraving on the at least one forme cylinder ( 03 ) prior to the ink being applied into the at least one engraving on the at least one forme cylinder ( 03 ) to enable the at least one forme cylinder ( 03 ) to deposit concurrently both the ink and the protective fluid during printing onto at least one substrate ( 10 ), the protective fluid forming a protective layer and/or protective film on the ink deposited onto the at least one substrate ( 10 ), the protective fluid configured to at least one of dry, be dried, cure, or be cured more quickly than the ink,
the intaglio gravure printing press further comprising at least one wiping device ( 05 ) arranged at the at least one forme cylinder ( 03 ), wherein the at least one wiping device ( 05 ) is arranged along the direction of rotation of the at least one forme cylinder ( 03 ), downstream from the at least one print head ( 04 ), and upstream from a contact region of the at least one forme cylinder ( 03 ) with the at least one impression cylinder ( 01 ), and
the intaglio gravure printing press further comprising at least one dryer ( 07 ) arranged along a transport path of the at least one substrate ( 10 ), downstream from the at least one forme cylinder ( 03 ) and upstream from at least one collecting position of the at least one substrate ( 10 ), the at least one dryer ( 07 ) configured to dry and/or cure, at least in part, the protective fluid.

2. The intaglio gravure printing press according to claim 1 , characterized in that at least one further print head ( 04 ) is arranged at the at least one forme cylinder ( 03 ) along the direction of rotation of the at least one forme cylinder ( 03 ), downstream from the at least one print head ( 04 ).

3. The intaglio gravure printing press according to claim 1 , characterized in that the protective fluid is configured to be transparent, and/or that the protective fluid is embodied as varnish and/or as UV varnish.

4. The intaglio gravure printing press according to claim 1 , characterized in that the at least one wiping device ( 05 ) is arranged along the direction of rotation of the at least one forme cylinder ( 03 ), downstream from the at least one inking unit ( 18 ) or the at least one ink collecting cylinder ( 12 ).

5. The intaglio gravure printing press according to claim 1 , characterized in that the intaglio gravure printing press comprises at least two print heads ( 04 ), including the at least one print head ( 04 ) arranged at the at least one forme cylinder ( 03 ), and at least one other print head ( 04 ) arranged at the at least one impression cylinder ( 01 ).

6. The intaglio gravure printing press according to claim 1 , characterized in that the at least one substrate ( 10 ) having the ink and the protective fluid printed thereon is delivered onto a delivery pile at a delivery, or is rolled up at the delivery, and that the protective fluid is configured to be dry and/or cured prior to the at least one substrate ( 10 ) arriving at the delivery, and that the ink is configured to not be dry and/or cured prior to the at least one substrate ( 10 ) arriving at the delivery.

7. The intaglio gravure printing press according to claim 1 , characterized in that the protective fluid is configured to serve, at least in part, as a separating agent between the at least one engraving and the ink, and/or that, following applying the ink to the at least one engraving, the ink is layered, at least in part, on the protective fluid inside the at least one engraving.

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.

9. The method according to claim 8 , characterized in that the protective fluid is configured to be transparent, and/or that the protective fluid is embodied as varnish and/or as UV varnish.

10. The method according to claim 8 , further comprising wiping the at least one forme cylinder ( 03 ) by at least one wiping device ( 05 ), characterized in that the at least one wiping device ( 05 ) is arranged along a direction of rotation of the at least one forme cylinder ( 03 ), downstream from the at least one inking unit ( 18 ) and/or the at least one ink collecting cylinder ( 12 ), and downstream from the at least one print head ( 04 ), and/or that the at least one wiping device ( 05 ) is arranged along the direction of rotation of the at least one forme cylinder ( 03 ), upstream from a contact region of the at least one forme cylinder ( 03 ) with the at least one impression cylinder ( 01 ).

11. The method according to claim 8 , characterized in that the intaglio gravure printing press comprises at least two print heads ( 04 ), including the at least one print head ( 04 ) arranged at the at least one forme cylinder ( 03 ), and at least one other print head ( 04 ) arranged at the at least one impre

Assignees

• Koenig & Bauer Ag

Inventors

• Schaede Johannes

Classifications

• B41F9/08 Primary

  Wiping mechanisms · CPC title

• B41F9/021 Primary

  Sheet printing presses · CPC title

• B41F9/023

  Web printing presses · CPC title

• B41F9/06

  Details · CPC title

• B41F9/1018

  using a wiping cylinder · CPC title