Printing machine comprising an embossing device
The present invention provides a device for transferring image-forming layers from a transfer foil to printing sheets. The device includes a coating device for applying the image-forming layer of the transfer foil to an image area on the printing sheet that has been provided with an adhesive patter such that the image-forming layer is separated from a carrier layer of the transfer foil.
1. A sheet fed offset printing machine for printing and processing sheets comprising:
a plurality of sheet fed offset printing units each including an arrangement of a plate cylinder adapted for carrying a printing plate, a blanket or press cylinder in adjacent contacting relation to the plate cylinder, and an impression cylinder free of contact with the plate cylinder in adjacent contacting relation to the blanket or press cylinder for defining a sheet passage nip therebetween,
one of said printing units being a coating printing unit having a supply of adhesive material and the plate cylinder and blanket cylinder of said coating printing unit being operable for applying an image forming adhesive coating onto sheets passing through the sheet passage nip of the one printing unit, and
one of said printing units having an integrated transfer foil apparatus comprising a structural unit that includes a transfer foil supply apparatus, a consumed transfer foil removal apparatus, and guide elements for guiding the transfer foil to and away from sheets passing through a sheet passage nip defined in part by the impression cylinder of the printing unit with which the transfer foil apparatus is integrated whereby a film image is applied on the sheets by the transfer of at least parts of an image forming layer of the transfer film onto the sheets.
2. The sheet fed offset printing machine according to claim 1 wherein the transfer foil supply apparatus comprises a foil supply roller having an associated rotary drive and the consumed foil removal apparatus comprises a foil collection roller having an associated rotary drive.
3. The sheet fed offset printing machine according to claim 2 in which a plurality of said printing units are operable for producing a colored imprint.
4. The sheet fed offset printing machine according to claim 3 in which said coating printing unit and said transfer foil apparatus comprise a coating module.
5. The sheet fed offset printing machine according to claim 4 wherein the coating module is connected downstream of the plurality of printing units so as to be able to perform a lamination on the colored imprint.
6. The sheet fed offset printing machine according to claim 4 wherein the coating module is connected upstream of the plurality of printing units.
7. The sheet fed offset printing machine according to claim 4 wherein the plurality of printing units are arranged one after the other with a turning unit being arranged between one adjacent pair of printing units for turning over printing sheets in order to print the a front side and a back side, the coating module being arranged downstream of the turning unit.
8. The sheet fed offset printing machine according to claim 4 wherein the coating module is one a plurality of coating modules arranged one after the other within the sheet-processing apparatus.
9. The sheet fed offset printing machine according to claim 8 wherein at least two adjacent coating modules are configured as an integrated operating unit.
10. The sheet fed offset printing machine according to claim 9 including a plurality of said coating modules.
11. The sheet fed offset printing machine according to claim 4 wherein the coating module is a varnishing coating module.
12. The sheet fed offset printing machine according to claim 4 wherein the coating module is configured as a printing sheet lifting apparatus.
13. The sheet fed offset printing machine according to claim 1 in which the printing unit with which said transfer foil apparatus is integrated is different from said coating printing unit.
14. The sheet fed offset printing machine according to claim 13 in which a press cylinder of said printing unit with which said transfer foil apparatus is integrated and the impression cylinder of said printing unit define the sheet passage nip within which the film image is supplied to sheets by the transfer foil.
15. The sheet fed offset printing machine according to claim 1 in which said integrated transfer foil apparatus is a part of said coating printing unit and is operable for causing the film image to be applied on sheets after the application of the image forming adhesive coating on the sheets by said coating printing unit.
16. The sheet fed offset printing machine according to claim 15 in which said transfer foil apparatus includes a press cylinder that defines a nip with the impression cylinder of the coating printing unit with which the transfer foil is integrated through which the transfer foil and sheets pass in contacting relation to each other.
17. The sheet fed offset printing machine according to claim 15 in which said coating module is a structural unit that is transportable and selectively connectable between selected printing units of the printing machine.