DE19935169A1 - Printing press - Google Patents

Abstract

The Flexographic (RTM) printing machine is designed so that the first offset printing mechanism (8) is prearranged with at least one flexoprinting stretch, consisting of the elements of a first flexoprinting mechanism (2) of a first drying plant (3). Each element (1,2) of the flexoprinting stretch is assigned a suction system (6) connecting with after burning plant (7).

Description

The invention relates to a printing press for conventional and special print jobs.

The processing of special print jobs is in most cases to a specific one Printing process bound; This is how high quality label printing is like gravure printing Reserved. However, the disadvantages of this printing process also have to be accepted be taken.

If quality label printing is to be carried out in offset printing instead of gravure printing, Advantages of this printing process include the disadvantages of purchasing quality labels be taken. The disadvantage is particularly the high cost of ver turning paper (metal-coated paper) and when using metal-coated paper Paper in the printing of opaque white, which in the offset process is not with optimal results nis is possible. When using classic label paper (bright white) the offset is inferior to gravure in metal color printing.

For offset printing are aggregate machines with one sheet feeder, several printers ken and a sheet delivery generally known, these aggregate machines around dry ner, turning devices and / or painting units can be expanded.

The object of the invention is to provide a printing press with the conventional also special print jobs, how the quality label printing can be carried out.

According to the invention the object is achieved by the features of the patent claim; expedient configurations are disclosed in the subclaims.

Due to the new machine design, it is usually only possible to use the low reserved quality label printing with conventional offset printing machines and in the integrated flexographic printing units in which metallic colors are printed.

This makes it possible to do this inexpensively instead of the costly metal-coated paper to use bright white label paper.

Furthermore, when the flexographic printing units are taken out of service, this machine is also a übli che offset printing machine to use.

Ultimately, metal-coated paper can also be used in the flexographic printing units Opaque white layer are provided and then printed using the offset process.

The invention is described in more detail below using an exemplary embodiment.  

The drawing shows the printing machine for conventional and special print jobs.

The printing press shown contains a sheet feeder 1 , a first flexographic printing unit 2 designed as a system printing unit, a first dryer 3 , a second flexographic printing unit 4 and a second dryer 5 .

The elements of the first flexographic printing unit 2 , first dryer 3 , second flexographic printing unit 4 and second dryer 5 form a flexographic printing section, which can contain both a flexographic printing unit and a dryer and also more than two flexographic printing units.

Each element of the flexographic printing section is a suction 6 , which is in operative connection with a post-combustion system 7 , downstream.

The flexographic printing line is a number of offset printing units 8 , five in the exemplary embodiment, and a coating unit 9 arranged downstream; wherein the coating unit 9 is followed by a sheet delivery 10 . A flexographic printing night dryer 11 , which is connected to the post-combustion system 7 via the suction, is integrated into the sheet delivery 10 .

There is also the possibility to arrange a conventional dryer 12 instead of the flexographic night dryer 11 ; in the suction of this dryer 10 ; 12 , a flap 13 is arranged, which optionally enables the interposition of the afterburning system.

It is also possible to arrange an offset printing unit for water offset in front of the flexographic printing line. In this case, the suction 6 is not led to the afterburning system 7 but to the afterburning system 7 .

List of reference symbols

1

Sheet feeder

2nd

first flexographic printing unit

3rd

first dryer

4th

second flexographic printing unit

5

second dryer

6

Suction

7

Afterburner

8th

Offset printing unit

9

Coating unit

10th

Sheet delivery

11

Flexographic printing night dryer

12th

dryer

13

flap

Claims (9)

1. Printing machine for conventional and special print jobs with a sheet feeder, at least one offset printing unit and a sheet delivery, characterized in that the first offset printing unit ( 8 ) is preceded by at least one flexographic printing line consisting of the elements of the first flexographic printing unit ( 2 ) and the first drying unit ( 3 ) . 2. Printing machine for conventional and special print jobs according to claim 1, characterized in that each element ( 1 ; 2 ) of the flexographic printing section is assigned a suction device ( 6 ) connected to a post-combustion system ( 7 ). 3. Printing machine for conventional and special print jobs according to claim 1, characterized in that in the sheet delivery ( 10 ) with a suction, which is connected to the post-combustion system ( 7 ), operatively connected Flexo pressure night dryer ( 11 ) is arranged. 4. Printing machine for conventional and special print jobs according to claim 1, characterized in that at least one printing element ( 1 ) of the flexographic printing route is designed as a metal-printing element. 5. Printing machine for conventional and special print jobs according to claim 1, characterized in that at least one printing element ( 1 ) of the flexographic stretch is designed as opaque white on the printing sheet applying element. 6. Printing machine for conventional and special print jobs according to claim 1, characterized in that the last offset printing unit ( 8 ) is arranged a coating unit ( 9 ). 7. Printing machine for conventional and special print jobs according to claim 1, characterized in that in the sheet delivery ( 10 ) with a suction in operative connection dryer ( 12 ) is arranged. 8. Printing machine for conventional and special print jobs according to claim 3 or 7, characterized in that the suction of the dryer ( 12 ) or the flexographic post-dryer ( 11 ) can optionally be connected to the afterburning system ( 7 ). 9. Printing machine for conventional and special print jobs according to claim 1, there characterized in that a printing unit for water offset in front of the flexographic printing line.