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Grayscale printing method of thermosensitive printer

A technology of thermal printer and gray scale, applied in the direction of digital output to printing unit, instrument, electronic digital data processing, etc., can solve the problems of inflexibility, poor printing effect of pictures, etc., and achieve the effect of improving flexibility and printing efficiency

Active Publication Date: 2017-05-17
FUJIAN CENTM INFORMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thermal printers currently on the market can only print binary images, that is to say, either the blackest or the whitest, and the printing effect is poor and inflexible

Method used

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  • Grayscale printing method of thermosensitive printer
  • Grayscale printing method of thermosensitive printer
  • Grayscale printing method of thermosensitive printer

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Experimental program
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Embodiment Construction

[0021] see Figure 1 to Figure 2 As shown, in a grayscale printing method of a thermal printer of the present invention, in order to realize grayscale printing, the energy of the heating head to the paper can be controlled by controlling the heating time and the number of times of heating, because the amount of image data is relatively large, and the resources of the single-chip microcomputer and The data transmission speed is limited, so the host computer needs to preprocess the image, and the gray scale is required to convert the image to a thermal printer, so as to improve the printing quality and printing speed. The printer side converts one line of grayscale data of the host computer into a multi-line binary image, and then prints the multi-line binary image into a line of grayscale image by controlling the heating level and thermal printer motor paper feeding.

[0022] The method is further specifically as follows: the host computer is responsible for reading the 256-lev...

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PUM

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Abstract

The invention provides a grayscale printing method of thermosensitive printer. The grayscale printing method includes: preprocessing an image through an upper computer, converting the image into grayscale data required by the thermosensitive printer, converting the one-line grayscale data of the upper computer into a multi-line binary image by the aid of the thermosensitive printer, and printing the multi-line binary image into a one-line grayscale image by means of controlling a heating level ad a tissue feeding speed of the thermosensitive printer. The grayscale printing method of the thermosensitive printer has the advantages that sensitivity of the thermosensitive printer is increased, and the problem that a grayscale image is difficult to analyze is solved by the aids of a reasonable data processing compression algorithm and a double-buffer mechanism of the printer.

Description

technical field [0001] The invention relates to the technical field of printers, in particular to a grayscale printing method of a thermal printer. Background technique [0002] A printer is nothing more than a machine that presents people's thoughts in a certain form of expression (including text, images, shapes, etc.) with a specific medium. For example, a thermal printer is to present the graphics and text that people want to express through thermal paper. [0003] Receipt printers can be divided into thermal, thermal transfer, and dot matrix printers according to the printing method. [0004] The working principle of a thermal printer is that a semiconductor heating element is installed on the print head. After the print head is heated and contacts the thermal printing paper, the desired pattern can be printed out. The principle is similar to that of a thermal fax machine. The image is generated by heating and producing a chemical reaction in the film of the thermal pa...

Claims

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Application Information

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IPC IPC(8): G06F3/12
CPCG06F3/1205G06F3/1211
Inventor 卓春春庄毅民王鹏张登峰
Owner FUJIAN CENTM INFORMATION