JPH0222057A - Duplex multicolor offset sammeldruck press - Google Patents

Abstract

PURPOSE:To perform the shading printing to paper moneys by one printing press and to reduce a printing time, printing cost and the generation rate of paper loss by constituting such a structure that a Sammeldruck gathering plate cylinder is connected to a gathering rubber cylinder to perform Sammeldruck simultaneously with duplex multicolor offset printing. CONSTITUTION:The image elements formed to the plate surfaces of respective Sammeldruck pattern plate cylinders 13 are transferred to a pair of gathering rubber cylinders 6, 7, wherein offset plate cylinders 8 are in contact therewith through a Sammeldruck gathering rubber cylinder 12 and a Sammeldruck gathering plate cylinder 11, to be integrated therewith. Next, paper moneys pass between a pair of the gathering rubber cylinders 6, 7 to receive duplex multicolor offset printing and, at this time, the integrated picture elements are transferred to the paper moneys along with the picture elements of multicolor offset printing. That is, duplex multicolor offset printing and Sammeldruck are simultaneously applied to the paper moneys.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a printing machine that simultaneously performs double-sided multicolor offset printing and Zammel printing, and is intended to reduce printing costs in tint pattern printing of banknotes, etc.

<Conventional technology> Intaglio printing and letterpress printing are used to print banknotes and securities (hereinafter referred to as banknotes) for purposes such as preventing forgery.

Various lithographic printing methods are used in complex combinations. Intaglio printing is used to produce delicate and sharp lines for portraits and foreheads, letterpress printing is used to print sharp, easy-to-read characters for serial numbers, and offset printing is used for background patterns, which is suitable for multicolor printing. .

Furthermore, a special printing method, Zammel printing, is used for some of the background patterns.

Sammel printing is a printing method in which ink of different colors is applied to multiple partial plate cylinders, and then the lines on each partial cylinder are collected on a collecting cylinder via a rubber cylinder, and then transferred to the paper surface. It is the law. Zammel printing has the characteristic that no misalignment occurs even when the color is changed in the middle of the printing line, so it is highly effective in preventing counterfeiting.

What is shown in FIGS. 3 and 4 is a double-sided multicolor offset printing machine (hereinafter referred to as an offset printing machine) and a Sammel printing machine, which are used for printing background patterns, respectively.

The offset printing machine shown in FIG. 3 includes a pair of blanket cylinders 01,
It has four plate cylinders 02 each connected to each blanket cylinder 01, and image lines of four colors are transferred from each plate cylinder 02 to both sides of the paper fed between the blanket cylinders 01. printing is performed.

On the other hand, the Sammel printing press shown in Fig. 4 has three partial plate cylinders (Zammel pattern plate cylinders) 04 and a collective blanket cylinder (Zammel collective blanket cylinder) 05. Set plate cylinder (Zammel set plate cylinder) 06. A rubber cylinder 07 and an impression cylinder 08 are connected in this order. The printing lines on each partial plate cylinder 04 are transferred to the collective plate cylinder 06 via the collective blanket cylinder 05.
The transfer is integrated into the rubber cylinder 07 via the rubber cylinder 07.
The image is printed on the paper fed between the image cylinder 08 and the impression cylinder 08.

<Problem to be solved by the invention> As mentioned above, offset printing machines and Sammel printing machines are used in combination to print background patterns, but both printing machines are coarse and large in size, so the production and installation costs are low. There were many drawbacks. Furthermore, in order to print the tint pattern, the paper must be passed through two printing machines for printing, which increases the printing cost 1- and increases the occurrence of wasted paper.

Means for Solving the Problems> Accordingly, the present invention provides a printing machine that performs double-sided multicolor offset printing by feeding paper between a pair of collecting blanket cylinders, in which a Zammel collecting plate connected to the collecting blanket cylinders is provided. The present invention includes a drum, a Zammel collecting rubber cylinder connected to the Zammel collecting blanket cylinder, and a plurality of Zammel pattern plate cylinders connected to the Zammel collecting blanket cylinder, so that double-sided multicolor offset printing and Zammel printing can be performed simultaneously. This paper proposes a double-sided multi-color offset printing machine featuring the following features.

Function> The drawing lines formed on the printing surface of each ZAMMER pattern plate cylinder are transferred and integrated to the collecting blanket cylinder via the ZAMMER collecting blanket cylinder and the ZAMMER collecting plate cylinder, and the paper passes between the collecting blanket cylinders. At the same time, this integrated image is transferred to the paper together with the image for multicolor offset printing.

<Embodiment> Hereinafter, one embodiment of the double-sided multicolor offset Sammel printing machine according to the present invention will be specifically described based on the drawings.

FIG. 1 shows the entire printing press of this embodiment, and FIG. 2 shows details of section A in FIG.

As shown in Fig. 1, a paper feed device 2 is provided in the upper right corner of the printing press body 1, and a registration device 3 is provided directly above it, and each sheet of paper is separated and positioned one by one for printing. Supplied to machine body 1. Further, a paper discharge chain 4 is disposed at the lower left of the printing press body 1, and a delivery 5 is disposed at the left side, and sheets printed by the printing press body 1 are sequentially conveyed and stacked in a pile.

As shown in FIG. 2, in the printing press main body 1, a pair of collecting blanket cylinders 6 and 7 are connected by a printing unit IC located between the left and right ink units IL and IR that move as shown by two-dot chain lines. It is supported horizontally in the state. Four plate cylinders 8 held in the left ink unit IL are connected to the left side of the left collective blanket cylinder 6, and four-color offset printing can be performed on one side (hereinafter referred to as the front side) of the paper. It looks like this.

In the figure, reference numeral 9 denotes a transfer cylinder, which transfers sheets between the register device 3 and the collecting blanket cylinder 6, and between the collecting blanket cylinder 6 and the paper discharge chain 4. Further, 1o is an ink roller at the end of an inking device (not shown).

On the other hand, two plate cylinders 8 held in the right ink unit IR are connected to the upper right of the right blanket cylinder 7, and one sammel cylinder 8 held in the right ink unit 18 is connected to the lower right. The collecting plate cylinders 11 are connected. A Zammel collecting blanket cylinder 12 held in the printing unit 1c is connected below the Zammel collecting plate cylinder 11.
Three Zammel pattern plate cylinders 13 held by an ink unit IR on the right side are further connected to the right side of 2. The plate cylinder 8 and the Sammel collecting plate cylinder 11 held by the right ink unit JR are arranged on the right side of the line connecting the centers of the collecting blanket cylinder 7 and the Sammel collecting blanket cylinder 12, and the ink unit JR is By moving to the right side, these plates can be easily cleaned and replaced from one side. In addition, the angles formed by the centers of the Zammel collecting plate cylinder 11°, the Zammel collecting rubber cylinder 12, and the lower Zammel pattern printing cylinder 13 are also within 180°,
Cleaning and replacement of these plates can be easily performed from one side by moving the ink unit 18.

Due to the above configuration, when this printing machine is operated, four-color offset printing is performed on the front side of the paper like the printing machine described above, but on the back side, two-color offset printing and three-color Zammel printing are simultaneously performed. will be held. In addition, in this printing machine, if a so-called solid plate (a plate with a surface treatment that makes it easy for ink to adhere to the entire surface) is attached to the Sammel collecting plate cylinder 11, it is possible to perform five-color offset printing on the back side of the paper. Become.

As mentioned above, in the printing machine of this embodiment, 4
Although two-color offset printing and three-color sammel printing can be performed on the back side, for example, multicolor offset printing and sammel printing may be performed on both sides. Alternatively, only multicolor offset printing may be performed on one side, and only Zammel printing may be performed on the other side.

<Effects of the Invention> In the double-sided multicolor offset Zammel printing machine according to the present invention,
By connecting the Zammel collecting plate cylinder to the collecting rubber cylinder, it is possible to perform Zammel printing at the same time as double-sided multicolor offset printing, so printing of background patterns on banknotes, which was conventionally done using two printing machines, can now be done with one printing machine. This will dramatically reduce the production and installation costs of printing machines, as well as reduce printing time, printing costs, and the rate of paper waste. Further, in the embodiment, since the cylinders are arranged as described above, cleaning and replacement of all the plate cylinders 8, 11, 13 can be performed by moving the ink units IL and IR left and right to the respective ink units IL, 1. can now be easily performed from one side.

[Brief explanation of the drawing]

FIG. 1 is an overall view of a double-sided multicolor offset Sammel printing machine according to the present invention, and FIG. 2 is a detailed view of section A in FIG. In addition, in FIGS. 3 and 4, 11 is a Sammel collecting plate cylinder, 12 is a Sammel collecting rubber cylinder, and 13 is a Sammel pattern printing cylinder.

Claims (1)

[Claims] A printing machine that performs double-sided multicolor offset printing by feeding paper between a pair of collecting blanket cylinders each having a plurality of offset plate cylinders connected to each other, the printing machine comprising: a Sammel collecting plate cylinder connected to the collecting blanket cylinder; It is characterized by comprising a Zammel collecting rubber cylinder connected to a Zammel collecting blanket cylinder and a plurality of Zammel pattern plate cylinders connected to the Zammel collecting blanket cylinder, so that double-sided multicolor offset printing and Zammel printing can be performed simultaneously. Double-sided multicolor offset sammel printing machine.