DE19953020B4 - Method and device for generating a multicolor print - Google Patents

Abstract

Method for producing a multi-color print on a sheet (10) in printing machines, in which the sheet (10) lies over two revolutions of a printing cylinder (6) on the same and in a gripper closure by a respective printing forme cylinder (2), two inking units (5) and an offset cylinder (9) exhibiting first and second and a printing form cylinder (2), an inking unit (5) and an offset cylinder (9) exhibiting third printing unit (30.1, 30.2, 30.3) is successively provided with five colors, the impression cylinder (6) a triple-size diameter with three active surfaces (4), which is associated with a delivery chain circuit (17) and a stop drum (14) formed sheet feeding system, wherein
The first and second colors on the sheet (10) through the first and second printing units (30.1, 30.2.),
- The third color through the printing form cylinder (2) of the third printing unit (30.3) on the stop drum (14),
From the stop drum (14) to the sheet (10),
- the fourth and fifth color on the bow ...

Description

The The invention relates to a method and a device for generating a multicolor print.

A device for generating a multicolor print is known ( DE 195 23 378 A1 ). In this device, the printing cylinder has a triple-size diameter with three active surfaces; the printing cylinder is associated with a first and a second structure identical printing unit; the impression cylinder is preceded by a delivery chain circuit and a sheet feed system designed as a stop drum.

These Facility is for the generation of a five-color print not suitable.

Out WO 00/13903 A2 are furthermore a method and a device for producing a multi-color printing, wherein the printing cylinder a triple-large Diameter with three active surfaces having. The printing cylinder is assigned three printing units in such a way that a first and second and a fourth and fifth color be applied by a first and second printing unit. A third and a sixth color is from a third inking unit via a transfer drum applied. Thereafter, the printed sheet is taken over by a second transfer drum and over a delivery chain circuit fed to the delivery pile. adversely is the required for the realization of multi-color printing structural Effort.

task The invention is a method and apparatus for generating to create a multi-color print where in a machine run five colors be applied to the bow.

According to the invention Task by the claims 1 and 2 solved.

following is the means for generating a multi-color print on a embodiment explained in more detail.

The Drawing shows a device designed as a printing press for generating a multicolor print.

The printing machine according to the drawing has the following structure. It is a writing device 1 from on a printing form cylinder 2 clamped printing forms 3 intended. The printing plate cylinder 2 is with two active surfaces 4 equipped, each one a pressure form 3 wear. The printing form cylinder 2 are still two alternately on and Abstellbare inking 5 assigned.

The printing plate cylinder 2 is about an offset cylinder 9 with two offset surfaces 16 with a printing cylinder 6 in active connection.

The printing cylinder 6 has three pressure surfaces 7 and accordingly three gripper rows 8th for detecting sheets to be printed 10 , The impression cylinder 6 are two formations of offset cylinders 9 , Compression cylinders 2 , Inking units 5 and facilities for describing 1 assigned.

The printing cylinder 6 has a threefold diameter. Plate cylinder 2 and offset cylinders 9 have a diameter twice the diameter. offset cylinder 9 , Printing forme cylinder 2 and the two inking units 5 each form a printing unit 30.1 and 30.2 that the impression cylinder 6 as first and second printing unit 30.1 ; 30.2 are assigned directly.

For the promotion of sheets to be printed 10 from a investor sheet pile 11 to a landing line 13 is below a feed table 15 an element for promotion 12 arranged. For the supply of the sheets to be printed 10 from the landing line 13 to the printing cylinder 6 is a stop drum 14 trained feed mechanism provided.

The stop drum 14 is with a gripper system 32 provided for the sheet promotion. The diameter of the stop drum 14 corresponds to the diameter of Druckform- and offset cylinder 2 ; 9 ie it is double size.

The stop drum 14 has a closed surface, is over half the circumference on a blanket surface 19 with a blanket 24 covered and thus acts over half the circumference as quasi offsetting cylinder of a third printing unit 30.3 ,

The third printing unit 30.3 also contains one with the stop drum 14 operatively connected plate cylinder 26 , which in contrast to the plate cylinders 2 is covered over half the circumference with a printing plate. The printing form is an inking unit 5 and an imaging device 1 assigned.

The stop drum 14 indicates except the blanket surface 19 over half the circumference also a feed surface 18 for sheet promotion.

The impression cylinder 6 is a sheet delivery for sheet removal 25 downstream. The bow boom 25 consists of a delivery chain circuit 17 and one below the delivery chain circle 17 arranged delivery sheet stack 21 ,

The delivery chain circle 17 Includes front derailleur wheels 22 and Rear Kettenumlenkräder not shown, being passed over the Kettenumlenkräder equipped with gripper outfeed conveyor chain.

following the mode of operation of the device is described.

The from the investor sheet pile 11 isolated bows 10 is conveyed by means of the elements 12 to the landing line 13 promoted from the printing press and from the stop drum 14 to one of the gripper rows 8th of the printing cylinder 6 to hand over. Only every second is the stop drum 14 passing gripper row 8th a bow 10 fed.

The print image is written by the means for writing 1 on the on the plate cylinder 2 clamped printing form 3 applied. The print image is through the inking unit 5 colored and on the offset cylinder 9 transferring the printed image to that on the printing cylinder 6 lying bow 10 passes.

The first and second color is through the first and second printing unit 30.1 ; 30.2 on the bow 10 applied. Thereafter, the printed image of the on the plate cylinder 26 spanned, by the institution to describe 1 described and the inking unit 5 colored printing form on the blanket 24 the stop drum 14 transfer. From the blanket 24 the stop drum 14 the print image is now with a third color on the sheet 10 that continues from the gripper row 8th of the printing cylinder 6 held, transferred.

After that, the on the printing cylinder 6 lying arch 10 passed again at the first and second printing unit, so that the first and second printing unit 30.1 ; 30.2 the fourth and fifth color can be applied.

After that, the sheet leading edge reaches the tangent point of impression cylinder 6 and display chain circle 17 is the already provided with five color orders bow 10 from the printing cylinder 6 to a gripper system of the delivery chain circuit 17 to hand over.

After that, the bow becomes 10 over the delivery chain circle 17 on the delivery sheet pile 21 stored.

1

Facility to describe

2

Plate cylinder

3

printing form

4

effective area

5

inking

6

pressure cylinder

7

print area

8th

gripper row

9

offset cylinder

10

bow

11

Investors sheet pile

12

element to promote

13

Anleglinie

14

stop drum

15

feed table

16

offset surface

17

Delivery chain circle

18

feed surface

19

Blanket area

20

-

21

Display sheet pile

22

front chain reversing wheel

23

-

24

blanket

25

sheet delivery

26

plate cylinder

27

-

28

-

29

-

30.1

first printing unit

30.2

second printing unit

30.3

third printing unit

31

-

32

gripper system

Claims (2)

Method for producing a multicolor print on a sheet ( 10 ) in printing presses in which the sheet ( 10 ) over two revolutions of a printing cylinder ( 6 ) lies on the same and in a gripper closure by a respective printing forme cylinder ( 2 ), two inking units ( 5 ) and an offset cylinder ( 9 ) exhibiting first and second and a printing forme cylinder ( 2 ), an inking unit ( 5 ) and an offset cylinder ( 9 ) third printing unit ( 30.1 . 30.2 . 30.3 ) is successively provided with five colors, the impression cylinder ( 6 ) a triple-size diameter with three active surfaces ( 4 ), to which a delivery chain circuit ( 17 ) and a stop drum ( 14 ) is associated with a trained sheet feeding system, wherein - the first and second color on the sheet ( 10 ) through the first and second printing units ( 30.1 . 30.2 .), - the third color through the printing plate cylinder ( 2 ) of the third printing unit ( 30.3 ) on the stop drum ( 14 ), - from the stop drum ( 14 ) on the bow ( 10 ) - the fourth and fifth color on the sheet ( 10 ) through the first and second printing units ( 30.1 . 30.2 ) - and the bow ( 10 ) on a delivery pile ( 21 ) is stored. Device for generating a multicolor print on a sheet ( 10 ) in printing presses according to a method according to claim 1, in which the sheet ( 10 ) over two revolutions of a printing cylinder ( 6 ) lies on the same and in a gripper closure by a respective printing forme cylinder ( 2 ), two inking units ( 5 ) and an offset cylinder ( 9 ) exhibiting first and second and a printing forme cylinder ( 2 ), an inking unit ( 5 ) and an offset cylinder ( 9 ) third printing unit ( 30.1 . 30.2 . 30.3 ) can be provided successively with five colors, the impression cylinder ( 6 ) a triple-size diameter with three active surfaces ( 4 ), to which a delivery chain circuit ( 17 ) and a stop drum ( 14 ) is associated with a trained Bogenzuführsystem, wherein the stop drum ( 14 ) Part of the third printing unit ( 30.3 ), a double-sized diameter and a gripper system ( 32 ), each over half the circumference with a rubber blanket ( 24 ) covered blanket surface ( 19 ) and a feed surface ( 18 ) and the blanket surface ( 19 ) with an inking unit ( 5 ) cooperating plate cylinders ( 26 ), the third printing unit ( 30.3 ) forming, is assigned.