Printer

Abstract

The present invention provides a printer which can facilitate temperature control of a machine-plate cylinder section, can allow simple setup, and can facilitate maintenance of printing quality in continuous printing. In the printer, a machine plate is mounted on the outer circumference of a machine-plate cylinder section 12 fixedly provided on a machine-plate drive shaft 1. A fluid whose temperature is regulated is circulated in the machine-plate cylinder section 12.

Description

technical field [0001] This invention relates to printing machines. Background technique [0002] As a printing machine, there is known a printing machine in which a printing plate is attached to the outer periphery of a printing plate cylinder fixed to a printing plate drive shaft. [0003] In recent years, design requirements requiring high-speed and advanced printing techniques tend to increase. Especially in the case of waterless smooth printing and dot printing, absolute mechanical precision is required, and temperature control of each part is indispensable. However, in the actual situation, the room temperature control of the printing machine and the temperature control of the ink tank are installed in the room. , To deal with the temperature management of the ink outlet roller that constitutes the ink fountain. [0004] Originally, temperature control of the printing plate cylinder is important in actual printing, but this temperature management is relatively diffic...

AI Technical Summary

Problems solved by technology

Under the current situation, as mentioned above, although the temperature management of the ink outlet roller is sufficiently carried out, the temperature management of the plate cylinder is not sufficient, so the temperature of the ink also rises rapidly together with the temperature rise of the plate cylinder, and the ink As a result, the flow state and transferability of the ink change, and ink smears or color unevenness appear in the halftone dots, fine design parts, or non-drawing line parts.

The operator needs to stop the printing line every time, clean the printing plate, blanket, and dispose of defective products flowing out to the subsequent process, etc. These processes become a physical burden

In addition, if the operator fails to detect ink stains and color unevenness in time, due to the production of a large number of defective products, careful attention must also be paid to the inspection work, which also increases the mental burden.

[0010] In the case of printing with extremely poor ink suppression such as black matrix and a large amount of ink output, in addition to the above-mentioned problems, the problem of ink atomization caused by the temperature rise of the ink becomes obvious, and the ink supply part (Ink supply device) Stains of various parts become serious

If the contamination of each part of the ink supply unit progresses, the accumulated ink will scatter and fall, which will become the main cause of garbage generation

Images