Variable printer

A printing press, variable technology, applied in printing presses, rotary presses, printing and other directions, can solve the problems of short printing action time, slowing down printing speed, decreased production efficiency, etc., to shorten the replacement time and expand the product range.

Active Publication Date: 2013-08-21
MIYAKOSHI PRINTING MACHINERY
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AI Technical Summary

Problems solved by technology

[0008] Therefore, when the printing operation time before plate replacement (depending on the number of printed sheets) is shorter than the above-mentioned printing plate replacement time, it is necessary to reduce the printing speed before printing plate replacement to make the printing operation time equal to the printing plate above. The situation that the replacement timing is the same causes the production efficiency to drop
[0009] For

Method used

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Example Embodiment

[0041] In order to implement the preferred way of invention

[0042] (Overview of variable printing machine)

[0043] Such as figure 1 As shown, the paper (roll paper) 2 supplied from the paper feeding unit 1 is forwarded and reversed synchronously by the intermittent conveying device 3a on the upstream side and the intermittent conveying device 3b on the downstream side. In reverse conveyance, on the paper running line between the upstream intermittent conveying device 3a and the downstream intermittent conveying device 3b, a plurality of printing units are arranged at intervals in the paper running direction, such as the first and the second 2. The third and fourth printing units 4a, 4b, 4c, 4d.

[0044] In addition, on the upstream side of the intermittent conveying device 3a on the upstream side and the downstream side of the intermittent conveying device 3b on the downstream side, ring portions 5a and 5b for absorbing the slack of the intermittently conveyed paper 2 are respect...

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PUM

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Abstract

Provided is a variable printer which enables a printing plate of a printing unit to be replaced in a short time during printing. Moreover, blanket rollers 12 of a plurality of printing units (4a-4d) can be moved to be in positions of printing, so as to be in rotatable contact with a printing plate roller (11) and a pressing roller (13), and also to be in withdrawl positions, between the pressing roller (13) and the blanket rollers (12), of running gaps for paper, so as to be separated from the printing plate roller (11) and the pressing roller (13), such that the blanket rollers (12) of the printing units, used for replacement of printing plates, can become the withdrawl positions, and the blanket rollers (12) of other printing units can become the printing positions.

Description

technical field [0001] The invention relates to a variable printing press with a plurality of printing units. Background technique [0002] Conventionally, as a variable printing machine, as disclosed in Japanese Patent No. 4447873, a variable printing machine has been proposed. A plurality of printing units are arranged on the paper running line between each other, so that the pattern can be printed on continuous paper without leaving an unnecessary space between the mutual printing patterns. [0003] In such a variable printing machine, sometimes the printing plate of one of the printing units of a plurality of printing units is replaced for the next printed pattern, because if all the printing units are stopped for this printing plate replacement, the production efficiency will decrease. Therefore, a variable printing machine has been proposed that can print with one printing unit while the printing units other than the printing unit performing plate replacement are prin...

Claims

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Application Information

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IPC IPC(8): B41F13/04
Inventor 藤原铃司
Owner MIYAKOSHI PRINTING MACHINERY
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