CS209636B1 - Spot printer wiring to print characters of various sizes and shapes - Google Patents

Abstract

The connection of a dot printer for printing characters of various sizes and shapes relates to computing and automation technology. The purpose is to print a large set of alphanumeric characters and graphic symbols of various sizes and shapes in a dot-by-dot manner. The connection of a dot printer includes a microprocessor unit, a line memory, a memory of character part samples and a dot printer. Characters are gradually constructed from character part samples and simultaneously printed. Characters of smaller dimensions are printed from shortened character part samples. The invention can be used in computing technology, automation technology, administration and elsewhere. The essence of the invention is shown in Fig. 2.

Description

(54) Point dot printer for printing characters of different sizes and shapes

The involvement of a dot-matrix printer for printing characters of various sizes and shapes relates to computing and automation technology. The purpose is to print a large set of alphabetic characters and graphic symbols of various sizes and shapes in a dot-like manner. The point printer wiring includes a microprocessor unit, line memory, character portion memory, and a point printer. Samples of character parts are gradually constructed and simultaneously printed characters. Smaller characters are printed from truncated patterns of character portions.

The invention can be used in computing, automation, administration and elsewhere.

The essence of the invention is shown in FIG. 2.

GIANT. 2

BACKGROUND OF THE INVENTION The present invention relates to the use of a dot-matrix printer for printing characters of different sizes and shapes, in particular a large set of alphanumeric characters and graphic symbols of different sizes and shapes, in which samples of parts of characters are permanently stored. .

Spot printers are designed for character matrices of different sizes. The most common character matrix is 7x5, but character matrices of 9x7, 11 x 9 and others are used. Characters that exceed the dimensions of the character matrix are scaled down or shifted to fit within the character matrix. However, this leads to their distortion and impaired readability. Characters that contain commas and hooks above letters and thus exceed the matrix dimension do not print at all on dot-matrix printers. A disadvantage of the current dot-matrix printing devices is also the poor quality of the printed characters, in particular the lower-case characters, the characters with arcs and oblique lines. As the character matrix dimensions increase, the quality of the printed characters improves somewhat, but it is still apparent from the characters that they are formed from dots. Only in the dot printing method, which uses the possibility of displacing points 0 with a fraction of the dot pitch in both dimensions of the character matrix when printing arcs and oblique lines, the curves of the characters are almost continuous and continuous when the diameters of the imprinted images are increased.

However, this method requires large memory capacities. Large memory capacities are also required for standard character matrices of large dimensions, and especially for large character sets. Contemporary dot printers allow you to print a certain, limited number of characters of a single size.

The drawbacks of the prior art are eliminated by the use of a point printer for printing characters of different sizes and shapes according to the invention, which consists of a point printer, a single-line character memory or a column according to the invention, which further comprises a sample memory and a microprocessor unit. the microprocessor input is connected to a data input from a computer, data transfer device, or memory device, the first microprocessor output is connected to a row / column memory input, and the second microprocessor unit output is to a second dot printer input, row / column memory output, respectively is connected to the character portion memory input and the character portion memory output is connected to the first dot printer input.

The advantage of the dot-matrix printer according to the invention is, in particular, that from a relatively small number of samples of a part of the characters it is possible to assemble graphical figures of a large set of alphabetic characters, various symbols, marks and signs. Moreover, it allows to select different character sizes, different character shapes, characters with reinforced sections, characters exceeding the dimensions of the matrix of characters from the top and bottom and oblique characters. Samples of character parts can be used to construct characters of different alphabets. The memory of the character portion samples is very small compared to the extensive memory of the character matrices used in the prior art.

In the accompanying drawings, Fig. 1 shows the layout of a dot printed character on the character samples shown in Table 1, Fig. 2 shows a block diagram of the connected dot printer, Fig. 3 shows three different sizes of figure 2, Figs. Fig. 4 shows features with reinforced sections, Fig. 5 shows features exceeding the dimension of the matrix of the feature from above and below, and Fig. 6 shows features with a certain inclination.

In FIG. 1, a dot 2 is depicted in accordance with a novel dot-printer connection of the invention. This allows you to print points shifted by half a point pitch in both dimensions of the character matrix. Displaced points are used especially when printing arcs and oblique lines. However, no points in the line are printed with a distance of one half of the dot pitch, which does not reduce the character speed compared to conventional methods. Fig. 1 depicts a character matrix of 9x7 base dimensions, which corresponds to a memory matrix of a 17x13 character. This is written in Table 1, where each 13-bit line forms samples of the character parts. Rows 4, 6, 8 and 16 are empty, so the number 2 is made up of 13 different character patterns. The samples shown in Table 1 can be used to generate a variety of other features. For example, samples no. 15a can be formed with the letter L, samples no. 12 and 17 have the letter T, samples 6, 1, 2, 3 and 5 are used to create any character with arcs. Character patterns can be used to create characters that exceed the basic dimension of the matrix from above and below, especially when printing hooks and dashes above letters. '

Character patterns for one character matrix dimension can also be used for another, smaller character matrix dimension. For example, for the basic dimension of the 7x5 matrix, abbreviated samples 5 and 17 can be used from Table 1 to form the letter L. One character pattern can be used to construct a number, a lowercase and a large alphabetic character, a sign or a mark. The same character patterns can be used to construct Cyrillic characters, the Greek alphabet, or completely arbitrary alphabets.

FIG. 2 is a simplified block diagram of a dot-matrix printer according to the invention, indicating a 1-microprocessor unit, a 2-line data memory, a 3-character sample memory, and a 4-point printer. The blocks are connected such that the input data to be printed is input to the input 10 of the microprocessor unit 11, the first output 11 of which is connected to the input 21 of the line 2 memory and the second output 12 is connected to the second input 42 of the dot printer. The output 22 of the line 2 memory is connected to the input 31 of the sample memory 2, whose output 32 is connected to the first input 41 of the point printer.

In Fig. 3, three different sizes of number 2 are drawn in a new point way. The basic dimensions of the character matrix were chosen 7x5, 9x7, 12x9. A series of character patterns for a 12x9 matrix can also be used for both smaller character matrices.

Fig. 4 shows the numeral 2 and the character R with reinforced sections for better readability.

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FIG. 5 shows the features U, p that exceed the basic dimension of the feature matrix.

In FIG. 6, the numeral 2 and the character Ě are plotted.

The point printer connection according to the invention can advantageously be used for arranging the printing elements in a row or column, respectively.

A printing device for spot printing characters and graphics, in which a series or columns of printing elements have an electromagnetic device for shifting these elements and thereby shifting the printed dots in the horizontal or vertical direction by a fraction of one pitch to the recording medium which is stationary during printing and is displaceable by a step electric motor by a fraction of one pitch when the printing elements are at right / left and bottom / top dead center respectively.

An advantageous connection of the point printer according to the invention is furthermore provided in the microprocessor unit with a counter for shortening the pattern of the character parts and thus for reducing the matrix of printed characters or for printing the pattern of the character parts in fractions of point spacing. creating oblique characters.

The advantage of the new point printer connection is that a relatively small number of samples can be used to construct a large set of alphabetic characters, not only Latin characters, but also Cyrillic, Greek alphabets, graphic symbols, signs and a variety of signs. In addition, it is possible to select different character sizes, different character shapes, oblique characters, hook and comma characters, characters exceeding the matrix dimensions from above and below. «

The dot-matrix printer according to the invention can be advantageously used in particular in the Unified Electronic Computer System for the printing of large and small Latin characters, as well as in Cyrillic ^{in the} Small Electronic Computer System and wherever a large set of characters of various shapes needs to be printed. .

Claims (4)

SUBJECT OF THE INVENTION 1. A dot printer receptacle for printing characters of various sizes and shapes, comprising a dot printer, a single line or column character memory, characterized in that it further comprises a memory of sample character portions (3) and a microprocessor unit, the microprocessor input (10). the first output (11) of the microprocessor unit (1) is connected to the memory input (21) of the row (2), respectively the columns and the second output (12) the microprocessor unit (1) is connected to the second input (42) of the dot printer (4), the output (22) of the memory (2) row, respectively the column is connected to the input (31) of the memory (3) a memory portion (3) of the character portion samples is connected to the first input (41) of the dot printer (4). 2. A dot-printer connection according to claim 1, characterized in that a counter is provided in the microprocessor unit (1) for shortening samples of the character portions and thereby reducing the matrix of printed characters. A side printer connection as claimed in claim 1, characterized in that a counter is provided in the microprocessor unit (1) for printing samples of character portions in fractional pitch spacing. A dot-printer connection according to claim 1, characterized in that a counter is provided in the microprocessor unit (1) for the successive printing of samples of the character portions and thus for the formation of oblique characters.