Printing – Special article machines – Rotary
Patent
1997-04-24
1998-09-15
Burr, Edgar S.
Printing
Special article machines
Rotary
101 36, 101479, 101DIG35, 101183, 101216, B41F 1700
Patent
active
058064206
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a printing device for printing individual flat print substrates, preferably compact disks (CDs).
DESCRIPTION OF THE PRIOR ART
A device for multi-layer lacquering of sheet metal panels is known from DE 43 28 011 A1. Printing, in particular printing in good register, is not intended with this device and is also not possible. In addition, the distance between two directly adjoining lacquer application units is greater than the length of the sheet metal panels to be lacquered.
DE 29 38 291 B2 discloses a multi-color printing device for printing a flat plate, which is coated immediately thereafter. Multi-color printing is performed by flexographic printing, i.e. by a letter-press method. The pattern or plate cylinder is inked in several adjoining colors and its ink coating is transferred to a plate to be printed.
EP 0 581 378 A1 disclosed a printing device for printing individual flat print substrates, for example compact disks (CD) in multi-color print. The print substrates to be printed are fed by means of a feed device to a plurality of print units arranged after each other. The print positions of the plurality of print units have a distance from each other which is greater than the diameter or length of the print substrates. Short inking systems are known from EP 0 518 892 B1, for example.
SUMMARY OF THE INVENTION
The object of the present invention is directed to providing a printing device for multi-color printing of individual flat printed substrates, preferably of compact disks.
A printing device for printing individual, flat print substrates, such as compact disks or CD's, in multi-color print utilizes a feed device for the print substrate to be printed. A plurality of printing units are situated one after the other in the production direction, and receive the print substrates from the feed device. A delivery device for the print substrates receives the now printed substrates from the plurality of printing units. A distance between two print positions on two adjacent print units is less than the length or the diameter of a print substrate to be printed
The advantages which can be obtained by the present invention consist in particular in that it is possible to employ the so-called planographic printing process without dampening agents with multi-color printing. The waste at start-up can be reduced, because so-called short inking units without color zones can be used. It is possible to print several lanes of compact disks simultaneously, wherein the pattern does not need to be the same. Support devices in the movement path of the print substrates between the print units can be omitted.
BRIEF DESCRIPTION OF THE DRAWINGS
An exemplary embodiment is represented in the drawings and will be described in detail below, in which:
FIG. 1, is a front view of an exemplary embodiment of the printing device in accordance with the present invention in a schematic view, and
FIG. 2, is a section along the line II--II in FIG. 1.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The printing device 1 is used for printing plastic disks 2, in particular so-called compact disks, hereinafter called disks 2 for short. Viewed in the production direction, the printing device essentially consists of a separating device 3 for the stacked disks 2, a feed device 4 for conveying of the disks 2 to be printed from the separating device 3 to a first print unit 6, a plurality of, for example four, print units 6 to 9, and a conveying device 11 for conveying printed disks 12 to a delivery unit 13 for the printed disks 2.
Each of the print units 6 to 9 is preferably equipped for planographic printing without dampening agents using so-called UV inks and preferably does not have a unit for setting a print-zone-wide ink thickness,
Each one of the four print units 6 to 9 has a left lateral wall 21 and a right lateral wall 22, as seen in FIG. 2 whose upper and lower ends are respectively bolted to an upper transverse plate 23 or a lower transverse plate 24 to form a print unit frame 26.
REFERENCES:
patent: 1782608 (1930-11-01), Fulk
patent: 4449450 (1984-05-01), Barny et al.
patent: 4939992 (1990-07-01), Bird
patent: 5048418 (1991-09-01), Hars et al.
patent: 5528986 (1996-06-01), Andersson et al.
patent: 5676053 (1997-10-01), Schafer
Erhard Helmut
Schneider Georg
Burr Edgar S.
Colilla Daniel J.
Metronic - Geratebau GmbH & Co.
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