Single-channel ink quantity limiting method for color ink jet printer

Abstract

The invention discloses a single-channel ink quantity limiting method for a color ink jet printer. The method comprises the steps that firstly, output color targets of a cyan channel, a pinkish redchannel, a yellow channel and a black channel are designed; secondly, the color control function and the ink quantity limiting function of the color ink jet printer are closed, and the output color targets are printed; thirdly, the chromaticity and brightness of all color lumps of the output color targets are measured, and the saturability of each color lump is obtained according to the chromaticity; fourthly, maximum ink quantity thresholds of all the channels are obtained according to the rule of change between dot percentage and brightness and saturability; fifthly, output ink quantities corresponding to all the channels are controlled according to the input dot percentage and the maximum ink quantity thresholds of all the channels. By means of the single-channel ink quantity limiting method, while the output ink quantities are controlled accurately, the output color gamut of the printer can be maximized, the problems of wrinkling, ink piling, overflow and the like caused by an over-limit ink quantity are solved, and therefore the color output capability of the printer is improved.

Description

Technical field [0001] The invention belongs to the technical field of ink-jet printer color duplication control, and in particular relates to a single-channel ink volume limitation method for a color ink-jet printer. Background technique [0002] Inkjet printing is a process in which a printer ejects pigment ink droplets onto a printing medium through a print nozzle to achieve color reproduction. It mainly controls the amount of ink ejected by the nozzle to achieve the printing effect of the same ink with different levels. Multi-color inkjet printers have many advantages such as rich printing image levels, clear details, wide printing color gamut, and diverse substrates. However, affected by the properties of the printing medium and the ink itself, there is an upper limit for the maximum amount of ink in a single channel that the substrate can carry. When the amount of ink exceeds this upper limit, the range of print color reproduction will not increase. On the contrary, excessi...

AI Technical Summary

Problems solved by technology

However, when the color block with the ink volume exceeds the limit, there are problems such as ink overflow, the color difference may increase, so this method is no longer applicable in this case

In order to ensure the accuracy of the judgment, it is usually necessary to determine the maximum ink volume threshold through human eye observation, but this method cannot meet the fast and efficient requirements in the industry

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