Needle printer and character printing method and device thereof

Abstract

The invention provides a needle printer and a character printing method and device thereof. The method comprises the following steps that a printing request in a predetermined format is received, wherein the printing request comprises table information and character information; the printing request is analyzed, and a node tree structure is generated according to an analysis result; a character and table line coordinate linked list is generated according to the node tree structure, wherein the character and table line coordinate linked list comprises coordinate information and table line symbol information of a plurality of horizontal line bodies, coordinate information and table line symbol information of a plurality of horizontal line tail parts, coordinate information and table line symbol information of a plurality of vertical line bodies, and coordinate information and table line symbol information of vertical line tail parts; and a character and table line coordinate linked listis traversed, and a table and a character indicated in the printing request are printed. According to the method, table parameters can be arbitrarily adjusted, and meanwhile, table lines and charactercontents are independently positioned and do not influence each other, so that the method can adapt to the printing requirements of a complex table.

Description

Technical field [0001] The present invention relates to the technical field of dot matrix printers, in particular to a dot matrix printer and its character printing method and device. Background technique [0002] In banking, financial affairs and other business processes, needle printers are widely used to process complex vouchers, passbooks, carbon paper, etc. Dot matrix printers generally use character printing mode to improve printing accuracy. Many businesses cannot pre-set the size of the voucher, and need to dynamically generate forms that need to be printed according to the actual situation. Complicated situations such as: generate tables based on content, with multiple tables and large tables; generate several table columns according to business needs, and the width of each column is evenly distributed; generate several table columns according to business needs, and the width of each column is distributed according to content; press line typing, such as comments , Comm...

AI Technical Summary

Problems solved by technology

The existing printing method based on character rows and columns cannot adjust the width and height of the table arbitrarily, and cannot control the positional relationship between the table lines and the content. Wrong line spacing and column spacing will lead to broken lines, and the content before and after the table will cause the overall position of the table to shift. , if the local content exceeds the fixed amount of space, the form will be destroyed, which cannot meet the printing needs of complex forms such as banking and financial affairs

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