JPH04201464A - Printer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Summary] This invention relates to a printer device that prints a print pattern on the previous line without reversing the paper or the print head, which processes the printing of characters or print patterns on the previous line at high speed. A printer device in which a print head moves at each receiving line position receiving printing commands for each line, and controls the printing of characters and print patterns extending from each receiving line position to the previous line by a backward movement amount n. For each receiving line position, the print data of the area where printing was suspended at the previous receiving line position and the printing data of the area obtained by subtracting the amount of backward movement n from the next receiving line position are output, and the areas below are output. The apparatus is configured to include a print data control means for repeating the process of suspending printing.

[Industrial application field]

TECHNICAL FIELD The present invention relates to a printer device that prints a print pattern on a previous line without requiring reverse movement of paper or a print head.

[Conventional technology]

When a print command to the printer device is issued line by line, and enlargement and other various character decorations are specified as commands, the characters in the line at the time of the print command or the character-modified print pattern extend to the print area of the previous line. Sometimes.

At this time, if the height of the print head of the printer device is less than the height of the characters and print pattern on the line preceding the line that received the print command, the print head or the paper is moved to the height of the characters and print pattern. Printing is not possible unless it is reversed at the upper limit position. As described above, in a printer device in which characters or print patterns in a print line are allowed to extend to the previous line by command specification, a printing mechanism and operation for moving the paper or the print head backwards are essential.

FIG. 3 is a diagram illustrating a conventional method for printing characters and print patterns on the previous line.

In FIG. 3(a), the position of the print head where print data is received (hereinafter referred to as "receiving line position") is the first position.
After the print data of the row is received and the characters and print pattern of the first row are printed in the print area 31, the print head moves to the receiving row position (■) of the second row. The distance between them is defined as the amount of movement of the receiving line.

Here, the print data of the second line is received, and the print area 32
The characters and print pattern of the second line are printed on the first line, but if they overlap the first line, the paper or print head is The print area 32' of the second line at this time is shown in FIG. 3('b).

[Problem to be solved by the invention]

By the way, when a print command is issued, each time a character in that line or a print pattern to be modified by a character extends to the print area of the previous line,
In a configuration in which the paper or the print head is moved backwards, the mechanical operation takes time and a decrease in printing speed is unavoidable.

SUMMARY OF THE INVENTION An object of the present invention is to provide a printer device that can print characters or print patterns on the previous line at high speed.

[Means to solve the problem]

The invention according to claim 1 provides a printer in which the print head moves for each receiving line position receiving a printing command for each line, and controls the printing of characters and print patterns extending from each receiving line position to the previous line by a backward movement amount n. The device outputs, for each reception line position, the print data of the area where printing was suspended at the previous reception line position and the print data of the area obtained by subtracting the backward movement amount n from the next reception line position, and prints the print data of the area below that area. The print data control means is configured to include a print data control means for repeating the process of holding the print of the print data.

The invention according to claim 2 is the printer apparatus according to claim 1, wherein the print data control means includes means for outputting the print data of the area whose printing is suspended at the final received line position at a predetermined timing. do.

[For production]

In the present invention, the amount of backward movement n of the print head due to the characters and print pattern on the previous line is set, and only the area obtained by subtracting this amount is first printed. Next, when the print data of the next line is finalized, the area reserved for printing of the previous line and the backward movement amount n
Print the print data in the area after subtracting the amount. By repeating this kind of control, the paper or printing
Characters and print patterns on the previous line can be printed simply by moving the paper or the print head in the forward direction, without the need for backward movement of the radar.

[Example] Hereinafter, an example of the present invention will be described in detail based on a concave surface.

FIG. 1 is a block diagram showing the configuration of an embodiment of the apparatus of the present invention. Note that the configuration of the control section is shown here, and the printing mechanism and other details are omitted.

In the figure, a control program 12, a host interface 13, a reception buffer 14, a print buffer 15, and a print interface 16 are connected to the CPU II.

Received data is stored in the reception buffer 14 via the host interface 13. The print buffer 15 is
When the printing process is confirmed by the printing command, the contents of the receiving buffer 14 are stored as printing data. Note that the reception buffer 14 that sequentially reflects commands from the host device and the print buffer 15 that corresponds to printing operations on paper operate asynchronously. Further, the print buffer 15 is subjected to ring buffer control.

The printing control operation, which is a feature of the apparatus of the present invention, will be described below based on the states of the receiving buffer and printing buffer shown in FIG.

(a) The print information corresponding to the reception line position ■ is accumulated in the reception buffer 14, and (b) it is subsequently written to the reception line position ■ of the print buffer 15 by OR processing.

(C) The print data written to the print buffer 15 is
The area obtained by subtracting the backward movement amount n from the next receiving line position (■) is output as the print area, and the areas below this are put on hold for printing.

(d) In the receiving buffer 14, printing information corresponding to the next receiving line position (■) is accumulated, and (e) printing is then performed.

In file 15, the data is written (partially overwritten) to the receiving line position ■ which corresponds to the position away from the receiving line position ■ by the amount of the receiving line movement (partially overwritten).

(f) The print data written in the print buffer 15 is the print data whose printing was suspended at the receiving line position ■, the print data corresponding to the newly written receiving line position ■, and the print data corresponding to the newly written receiving line position ■, and the print data corresponding to the newly written receiving line position ■. The area obtained by subtracting the backward movement amount n from (2) is output as the print area, and the area below that is reserved for printing.

By repeating the above operations, the characters and print patterns on the previous line can be printed in sequence without moving the paper or print head backwards.

It should be noted that the print data whose printing is suspended at the receiving line positions ■ and ■ remains being printed pending unless a print command corresponding to the next receiving line position is input. Therefore, the print data is outputted using a timer's timeout or an operator's operation as a trigger, and is printed on paper.

(Effects of the Invention) As described above, according to the present invention, the printing mechanism can be simplified because there is no need for reverse movement of the paper or print head when printing characters or print patterns on the previous line. Furthermore, the influence of positioning accuracy due to reverse action can be avoided, and printing quality can be improved.

Furthermore, the delay in printing time caused by reverse movement of the paper or the print head is eliminated, and it becomes easy to increase the speed of the printer device that can print characters or print patterns on the previous line.

Furthermore, since it is not necessary to print all the characters and print patterns included in one line by printing one line, the length of the print head in the vertical direction can be shortened.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the device of the present invention. Figure 2 is based on the status of the receive buffer and print buffer.
FIG. 3 is a diagram illustrating a print control operation that is a feature of the apparatus of the present invention. FIG. 3 is a diagram illustrating a conventional method for printing a print pattern for the previous line. 11...CPU, 12...Host interface,
13... Control program, 14... Reception buffer,
15... Printing buffer, 16 river printing interface. Fig. 1 Receive buffer 14 Ellu buffer 15 Fig. 2

Claims (2)

[Claims] (1) In a printer device in which the print head moves for each received line position that receives a print command for each line, and controls the printing of characters and print patterns from the previous line by a backward movement amount n from each received line position, each received line For each position, the print data of the area where printing was suspended at the previous receiving line position and the printing data of the area obtained by subtracting the backward movement amount n from the next receiving line position are output, and the printing of the areas below this is held. A printer device characterized by comprising repeating print data control means. (2) The printer device according to claim 1, wherein the print data control means includes means for outputting, at a predetermined timing, the print data of the area whose printing is suspended at the final received line position. .