Piano keyboard type device for segmental adjustment and control and quantitative supply of printing ink

Abstract

The invention relates to a piano keyboard type device for the segmental adjustment and control and the quantitative supply of a printing ink. Two ends of an ink duct roller are provided with a symmetrical baffle plate respectively; a plurality of piano keyboard type ink knives are arranged between the baffle plates; the middle part of the lower end face of each piano keyboard type ink knife is provided with a limiting shaft sleeve; an adjust and control limiting main shaft is inserted in the limiting shaft sleeve; a plurality of the piano keyboard type ink knives form an ink knife board; eachtwo piano keyboard type ink knives are in sealed connection and the piano keyboard type ink knives and the symmetrical baffle plates are in sealed connection respectively; and two sides of the limiting shaft sleeve are provided with a screw adjusting and actuating mechanism and a reset spring respectively. The piano keyboard type device has the advantages of simple structure, reasonable design, good universality, high control accuracy, and convenient mounting and operation.

Description

technical field [0001] The invention belongs to printing machinery equipment, and in particular relates to a device for segmentally regulating and on-demand quantitative supply of printing ink with a piano-key structure. Background technique [0002] At present, color patterns or color photographs have thousands of colors on the screen. It is almost impossible to print these thousands of colors in one color. Therefore, four-color printing is usually used in the printing industry. That is, the original manuscript is firstly decomposed into four-color plates of cyan (C), magenta (M), yellow (Y), and black (K), and then the colors are synthesized during printing. The so-called "color separation" is based on the principle of subtractive color method, using the red, green and blue color filters to selectively absorb the color light of different wavelengths, and decompose the original into yellow, magenta and cyan primary colors. In the color separation process, the color light...

AI Technical Summary

Problems solved by technology

Although this method has been used for many years, its disadvantages are very obvious: the thin steel sheet is pressed to extrude the ink in a surface-to-face contact. When the ink overflows to the back of the thin steel sheet, it will accumulate and form extreme Difficult to remove pollution

In addition, since the thin steel sheet is a continuous whole, when one of the corresponding positions is adjusted, the left and right adjacent or even farther areas will be affected and implicated, and the effect is not ideal

The overall continuity of the thin steel sheet determines the mutual influence of the segment and the edge of the segment. It is impossible to completely distinguish, and the control effect will be as continuous and entangled as the relationship between the adjacent intervals of the continuous function image.

For printing machinery and equipment manufactured with such a structure, the supply of ink cannot be adapted to the actual demand. In the slightest, the ink stains will be light or heavy, which will affect the product quality, and in severe cases, the product will be scrapped due to discoloration or stickiness. The loss is self-evident. Complex structure, difficult manufacturing and processing, low precision

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