Peking University

Beijing Founder Electronics Co., Ltd.

Yanman Ma

Haifeng Li

Yuying Bai

Jinghua Shen

The present invention relates to a method and system for closed-loop color correction based on a multidimensional table, and belongs to printing device correction methods in the field of image hardcopy. The method comprises a step of performing loop color correction for color conversion based on a multidimensional look-up table, wherein a mapping relationship is established between a set of input dots and a set of output dots using a multidimensional look-up table in the color conversion. With the method and system of this invention, for different combinations of papers, printing inks and devices, a color conversion may be corrected to a more accurate extent, getting a chromatic aberration and a visual appearance closer to that of a target color, so as to achieve the purpose of color consistency management.

Method and system for closed-loop color correction based on a multidimensional table

The present invention provides a method, an apparatus and a printing equipment for printing documents, comprising: obtaining the name of the color document; retrieving the printing step information for the color document, according to the name of the color document, and determining if the printing step information for the color document is complete; printing the color document, according to the printing step information, in the case that the printing step information for the color document is complete. Thus, it is possible to avoid the problem of consuming a large amount of time caused by processing the color document at each time of printing it, so as to greatly increase the speed and efficiency of cyclic printing documents.

Method, an apparatus and a printing equipment for printing documents

The application discloses a method for measuring the total amount of ink of an inkjet printing device. The method may include: printing a sampling figure (S); measuring the color of the sampling figure by a measuring device (S); and determining the total amount of ink according to the measurements (S). The application also discloses an apparatus for measuring the total amount of ink of an inkjet printing device. The apparatus may include a printing module () configured to print a sampling figure; a measuring device () configured to measure the color of the sampling figure by a measuring device; and a determining module () configured to determine the total amount of ink according to the measurements. The method and the apparatus can improve the inkjet printing quality.

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Beijing, China

Yanman Ma