KR940006538B1 - Printing method for dot printer - Google Patents

Abstract

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Description

Printing method of dot printer

1 is a block diagram showing one configuration example of a printer using the present invention;

2 is a flowchart for explaining an example of the operation of FIG.

3 is an explanatory diagram for explaining an example of the operation of FIG.

4 is an explanatory diagram showing an example of printing by one dot pattern;

5 is an explanatory diagram showing an example of printing by a secondary dot pattern;

6 is an explanatory diagram for explaining an operation example of FIG.

7 is a flowchart for explaining another example of operation of FIG.

8 is an explanatory diagram for explaining another example of operation of FIG.

9 is an explanatory diagram showing an example of printing by a circle dot pattern and a secondary dot pattern;

10 is an explanatory diagram showing an example of printing by one dot pattern and a second dot pattern;

11 is an explanatory diagram showing an example of printing according to another embodiment;

12 is an explanatory diagram for explaining another operation example of FIG. 1;

[Industrial use]

The present invention relates to a printing method of a dot printer.

[Prior art]

Conventionally, for example, in a wire dot printer, in order to realize a high speed factor, a one-dot pattern representing a character or a graphic is deleted every other dot in each dot line, and the one-dot pattern printing is performed based on this dot pattern. There is a method of scanning by printing a printing head at twice the speed of time and increasing the printing speed (for example, Japanese Patent Laid-Open No. 60-73852).

[Problems that the invention tries to solve]

As described above, the printing speed is doubled in the method in which the one-dot pattern is deleted by crossing each dot in each dot line, but the printing pattern is significantly collapsed in comparison with the one-dot pattern. In other words, there is a drawback that the print quality is poor.

An object of the present invention is to provide a printing method of a dot printer capable of speeding up a printing speed at an arbitrary speed, in particular a printing method of a dot printer capable of realizing a high printing speed without substantially reducing printing quality. .

[Means for solving the problem]

In the present invention, n (n 2) 2nd dot data and m (m) when 2n or more 2nd dot data are continuous. The above-mentioned problem is solved by creating a secondary dot pattern by selecting secondary dot data every n) and performing printing at a higher speed than the one dot pattern factor based on the secondary dot pattern. Each of the one-dot data of the one-dot pattern is converted into n second dot data, and this is continuously developed at a position corresponding to 1 / n dot spacing of the minimum dot spacing of the one-dot pattern, and every m The secondary dot data of is selected, and the secondary dot pattern is printed by the selected secondary dot data.

In addition, the present invention represents a character or a graphic, and the like, and converts a dot pattern of D1 having a minimum dot spacing in the row direction into a secondary dot pattern having a minimum dot spacing in the row direction D2 (D1> D2), and this secondary dot In the printing method of the dot printer which prints at a higher speed than the one-dot pattern factor based on a pattern, each of the one-dot data of the said one-dot pattern is converted into n secondary dot data, and each said secondary dot data Is developed at a position corresponding to the dot interval of D1 / n, and the secondary dot data of the position corresponding to the dot interval D2 is selected among the secondary dot data, and the secondary dot pattern is selected based on the selected secondary dot data. In particular, the one-dot pattern prints while scanning the printing element at a speed v1, and the secondary dot pattern scans the printing device at a speed v2 (v2 = v1 × D2 / Dl). While printing .

EXAMPLE

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment of this invention is described based on drawing.

In FIG. 1, 1 is a one-dot pattern storage comprising a font ROM which stores one-dot character designation means such as a personal computer, and two is one-dot data constituting one-dot patterns of plural kinds of characters, numbers, symbols, and the like. Circuit 3 temporarily stores the one-dot data constituting the one-dot pattern read from the one-dot pattern memory circuit 2 and the second-dot data constituting the second-dot pattern in which the one-dot pattern is converted based on a predetermined algorithm. RAM, 4 is a control circuit for reading the one-dot data from the one-dot pattern memory circuit 2, pattern conversion of the dot pattern, printing, and the like, and 5 is the second dot stored in the RAM 3 It is a printing means composed of a printing head or the like that performs printing based on data.

In the case of performing the high speed factor, first, the mode character is switched to the high speed factor mode by a mode switch (not shown), and the print character designation means 1 designates the print character. If the print character is specified, the one-dot data of the one-dot pattern corresponding to this is read from the one-dot pattern memory circuit 2, and this one-dot pattern is second-dotted by the control circuit 4 based on a predetermined algorithm. The pattern is converted into and stored in the RAM 3. Subsequently, printing is performed to the printing means 5 based on the secondary dot pattern stored in the RAM 3.

Next, one embodiment of the pattern conversion method of the one-dot pattern by the control circuit 4 will be described according to the flowchart of FIG.

Now, it is assumed that one dot data of one dot line of the one dot pattern is developed in the RAM 3 as shown in FIG. 3 (a). First, each of these original dot data is converted into four consecutive secondary dot data continuous in the row direction as shown in FIG. 3 (b) (step A).

Next, select only the secondary dot data developed from the first dot position of the one dot pattern corresponding to the dot interval 1.5 times the minimum dot interval of the one dot pattern, that is, the secondary dot data every five crossings. Delete other secondary dot data. In this way, of the dot data for the dot lines shown in FIG. 3 (a), continuous one dot data is 1.5 times the minimum dot spacing of the one dot pattern as in FIG. 3 (c). To the corresponding position (step B).

When the pattern conversion is completed for all the dot lines, the print head is scanned at a speed 1.5 times that of the one-dot pattern printing based on the pattern-converted secondary dot data, and the printing elements such as the printing wires are printed with one-dot pattern printing. The driving is performed at the highest response frequency (shortest driving cycle) in the city and the printing is performed (step C).

In this way, the characters or the like designated by the print character specifying means 1 are printed at a speed 1.5 times that of the printing of the one-dot pattern.

Fig. 5 shows an example of printing by the second dot pattern in which the one-dot pattern shown in Fig. 4 is pattern-converted by the above method.

Further, in the above embodiment, the secondary dot data at the position corresponding to the dot interval 1.5 times the minimum dot interval of the original dot pattern is selected, but as shown in FIG. 6, the secondary dot data is disconnected. In this case, the second dot data at the head position of the subsequent second dot data is selected, and the second dot data developed at every dot interval 1.5 times the minimum dot interval of the one dot pattern from this head position again. It is also possible to select.

In FIG. 3 and FIG. 6, the second dot data developed at every dot interval 1.5 times the minimum dot spacing of the one dot pattern was selected. However, this is not limited to this, and it is 1.25 of the minimum dot spacing of the one dot pattern. It is also possible to select second-dot data which is expanded at every dot interval of 1.75 times or 1.75 times.

For example, instead of selecting the seventh secondary dot data in FIG. 3, the sixth secondary dot data is selected, and the scanning speed of the printing head is set to 1.25 times that of the one dot pattern printing. Printing is possible at a speed of 1.25 times the hour, and instead of selecting the seventh second dot data, the eighth second dot data is selected, and the scanning speed of the print head is again 1.75 times that of the one-dot pattern printing. A factor of 1.75 times that of the one-dot pattern printing becomes possible.

Further, in the above embodiment, one dot dot is converted into four secondary dot data, but this is random n (n) by setting the storage capacity of the RAM 3. 2) can be converted into secondary dot data. In this case, m (m 2) By selecting secondary dot data for each piece, and again, the scanning speed of the printing head is set to k (k <1) times that of the printing of the one-dot pattern, thereby enabling a high-speed factor of k times that of printing the one-dot pattern. .

Next, another embodiment of the pattern conversion method of the one-dot pattern by the control circuit 4 will be described according to the flowchart of FIG.

Usually, a printing element such as a wire pin symbolizes the case of printing one row continuously and its maximum response frequency is determined. The scanning speed of the printing head at the time of one-dot pattern printing drives the printing element at this maximum response frequency. When set, the argument character is determined to be optimal.

By the way, in fact, the printing element can be driven at a response frequency higher than the maximum response frequency as long as the dot element is about 2 to 3 dots continuous printing.

In the present example, the printing means 5 can apply the last one of the continuous dots, that is, the two consecutive speeds, at a normal response frequency of 1.5 times, and the printing quality can be improved by using this characteristic. will be.

Now, it is assumed that one dot data of one dot line of the one dot pattern is developed at dot intervals as shown in RAM 3 to 8 (a). First, this angular dot data is converted into two consecutive second dot data as in the eighth (b) (step A ').

Next, the first secondary dot data is first selected, and then the secondary dot data (x) consecutive after the selected secondary dot data is n. x It is determined whether or not it is within the range of 2n-1 (n is the number of secondary dot data developed for one dot data, in this example n = 2.).

When it is within this range, that is, when there is only one secondary dot data that is continuously selected, it is possible to print at a response frequency of 1.5 times the maximum response frequency at the time of printing the one-dot pattern. Secondary dot data (dot data dl in FIG. 8 (c)) developed at dot positions at intervals equal to the minimum dot interval of the original dot pattern are selected.

X When 2n, that is, when there are two or more second dot data continuously selected, the driving is performed at the response frequency at the time of printing the one dot pattern, which corresponds to the dot interval 1.5 times the minimum dot spacing of the one dot pattern. The second dot data transmitted every position, that is, the second dot data (dot data d2 in FIG.

By deleting secondary dot data other than the selected second dot data in this manner, the original dot data for one dot line in FIG. 8 (a) is converted as shown in FIG. 8 (c) (step B ').

When the pattern conversion is completed for all the dot lines, the printing head is scanned at a speed 1.5 times as large as the one dot pattern printing based on the pattern-converted secondary dot data. The driving is performed at the highest response frequency at or at 1.5 times its response frequency (step C ').

In this way, the characters or the like designated by the print character specifying means 1 are printed at a speed 1.5 times that of printing the one-dot pattern. Here, as an example, the one-dot pattern in Fig. 9 (a) and the one-dot pattern in (a) are pattern-converted secondary dot pattern rates by the conventional pattern conversion method, and (c) Shows a second dot pattern in which the one-dot pattern of (a) is pattern-converted according to another embodiment.

The second dot pattern of (b) is slightly thicker (since the dot spacing is 1.5 times) compared to the original dot pattern, and at the same time, the pattern is slightly collapsed in the upper right and lower parts, but the point is improved in (c). It is closer to the one-dot pattern.

In addition, the second dot pattern in which the dot pattern of (a) and the dot pattern of (a) are pattern-converted according to the above embodiment are shown in FIG. 10 (a), and (c) shows the circle of (a). A second dot pattern in which a dot pattern is pattern-converted according to another embodiment is shown.

In the second dot pattern of (b), the inclined back surface is collapsing compared to the original dot pattern. However, in (c), this point is improved, resulting in a smooth inclination line closer to the one dot pattern.

11 shows an example of a secondary dot pattern in which the original dot pattern shown in FIG. 4 is pattern-converted according to another embodiment.

Further, in the above embodiment, each of the one-dot data of the one-dot pattern is converted into two secondary dot data. However, as shown in Figs. 12A and 12B, one one-dot data is It may be converted to four secondary dots.

In this case, 1.25 (or 1.75) of the one-dot pattern from the dot position of each leading dot of the continuous secondary dot data as shown in the same drawing (c) according to the maximum response frequency of the printing element at the short dot continuous factor location. ) Select the secondary dot data at the dot position at every dot interval, and the number of consecutive secondary dot data x after the dot position of the selected secondary dot data is n. x In the case of 2n-1 (in this case, n = 4), the secondary dot data at the dot position of the dot interval equivalent to the one dot pattern is selected from the dot position, and the scanning speed of the printing head is set again to the original dot pattern factor. By multiplying 1.25 (or 1 75) times, printing becomes possible at a rate of 1.25 (or 1 75) times that of the one-dot pattern printing.

In the above embodiment, the printing means 5 can hit two consecutive dots at a response frequency higher than the maximum response frequency at the time of printing the one dot pattern. However, this is not limited to this. The response frequency may be higher than the maximum response frequency at the time of pattern printing, and second dot data may be selected according to this characteristic.

In the above embodiment, the one-dot data for one row is developed in the RAM 3, but not limited to this, the one-dot data may be developed for each character.

Incidentally, in the above embodiment, pattern conversion was performed after the one-dot data was developed in the RAM 3, but not limited to this, and the pattern conversion was performed when the one-dot data was read from the one-dot pattern memory circuit 2; The pattern-converted secondary dot data may be developed in the RAM 3.

[Effects of the Invention]

According to the present invention, the printing speed can be increased at an arbitrary speed with little damage to the printing quality. In particular, since a single dot pattern is converted into n second dot patterns and every second dot pattern is selected, it is possible to easily realize a high factor of non-integer times of printing speed such as 1.25 times or 1.75 times one dot pattern. .

Claims (4)

Each of the one dot data of the one dot pattern representing the character, graphic, or the like is n (n 2) m (m) when two or more secondary dot data are converted into two secondary dot data and contiguous. n) A method of printing a dot printer, characterized in that a secondary dot pattern is created by selecting secondary dot data for every row, and printing is performed at a higher speed than the one dot pattern factor based on the secondary dot pattern. The method according to claim 1, wherein each of the one-dot data of the one-dot pattern is converted into n secondary dot data, which is successively located at a position corresponding to 1 / n dot spacing of the minimum dot spacing of the one-dot pattern. Developing, selecting secondary dot data every m pieces, and printing the secondary dot pattern by the selected secondary dot data. Character or graphic, and converts a dot pattern having a minimum dot spacing of D1 into a secondary dot pattern having a minimum dot spacing of D2 (D1 < D2) in accordance with the second dot pattern. In the printing method of a dot printer which prints at a higher speed than printing the one-dot pattern, each of the one-dot data of the one-dot pattern is converted into n secondary dot data, and each of the secondary dot data is D1 / n. At a position corresponding to the dot spacing, selects the secondary dot data at the position corresponding to the dot interval D2 from among the secondary dot data, and selects the secondary dot pattern by the selected secondary dot data. A printing method of a dot printer, characterized in that for printing. 4. The method of claim 3, wherein the one-dot pattern prints while scanning the print element at a speed v1, and the secondary dot pattern prints while scanning the print element at a speed v2 (V2 = v1 x D2 / D1). The printing method of the dot printer characterized by the above-mentioned.