JPH0815798B2 - Printer device - Google Patents

Description

The present invention relates to a printer device that prints a print pattern on a preceding line without performing a backward movement of paper or a print head, and processes a character or a printing pattern on the preceding line at high speed. A printer device that controls the printing of characters and print patterns on the preceding line by a backward amount n from each received line position by moving the print head for each received line position that receives a print command for each line. In each of the reception row positions, the print data of the area in which the print is reserved at the previous reception row position and the print data of the area obtained by subtracting the reverse amount n from the next reception row position are output.
A print data control unit that repeats the process of holding the print of the area below that and outputs the print data of the area of the print held at the last reception line position at a predetermined timing is configured.

[Industrial applications]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer device that prints a print pattern for the preceding line without a backward movement of paper or a print head.

[Conventional technology]

When a print command is issued to the printer device line by line and various character modifications such as enlargement are specified as commands, the characters in the line at the time of the print command or the print pattern to be modified by characters extends 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 character and print pattern on the line preceding the line where the print command is received, set the print head or paper to the height of the character and print pattern. It is impossible to print unless it is moved backwards to the upper limit position. As described above, in the printer device in which the characters or the print pattern of the print line are allowed to extend to the preceding line by the command designation, the printing mechanism and the operation for moving the paper or the print head backward are indispensable.

FIG. 3 is a diagram for explaining a conventional method for printing characters and a print pattern on the preceding line.

In FIG. 3 (a), the print data of the first line is received at the position of the print head where the print data is received (hereinafter referred to as the “reception line position”), and the characters of the first line are printed in the print area 31. After the print pattern is printed, the print head moves to the reception line position of the second line. Let the distance between them be the amount of movement L of the reception line.

Here, the print data of the second line is received, and the print area 32
The characters and the print pattern on the second line are printed on the first line, but if the line and the print pattern are on the first line, the paper or print head is moved by the distance (hereinafter referred to as "reverse amount") n to the maximum backward position. Print backwards. The printing area 32 'of the second line at this time is shown in FIG. 3 (b).

[Problems to be Solved by the Invention]

By the way, when a character or a character-modified character in the line at the time of a print command extends to the print area of the preceding line, the configuration in which the paper or the print head is moved backward causes a time-consuming mechanical operation and a decrease in the print speed. Was unavoidable.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a printer device capable of high-speed processing of printing characters or print patterns on the preceding line.

[Means for solving the problem]

According to a first aspect of the present invention, a print head is moved for each reception line position for receiving a print command for each line unit, and a printer for controlling printing of characters and a print pattern on the preceding line from each reception line position by a reverse amount n. In the device, for each reception row position, print data of the area in which printing is reserved at the previous reception row position and print data of the area obtained by subtracting the above-described amount of backward movement n from the next reception row position are output, and areas below that are output. The print data control means for outputting the print data of the print-held area at the final reception line position at a predetermined timing is repeated.

[Work]

According to the present invention, the reverse amount n of the print head is set by the characters and the print pattern in the preceding line, and only the area obtained by subtracting the amount is first printed. Next, when the print data of the next line is determined, the print data of the region reserved by the print of the previous line and the region of the area in which the amount of backward movement n is similarly subtracted are printed. By repeating such control, it is possible to print the characters and the print pattern relating to the preceding line only by moving the paper or the print head in the forward direction without performing the backward movement of the paper or the print head.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the device of the present invention. The configuration of the control unit is shown here, and the printing mechanism and others 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 a CPU 11.

Received data is accumulated in the receive buffer 14 via the host interface 13. The print buffer 15 stores the contents of the reception buffer 14 as print data at the time when the print process is confirmed by the print command. It should be noted that the reception buffer 14 that sequentially reflects the command from the host device and the print buffer 15 that corresponds to the printing operation on the paper operate asynchronously.
Further, the print buffer 15 is subjected to ring buffer control.

Hereinafter, the print control operation, which is a feature of the apparatus of the present invention, will be described based on the states of the reception buffer and the print buffer shown in FIG.

(A) The print information corresponding to the receive line position is stored in the receive buffer 14, and (b) subsequently, the print information is written in the receive line position of the print buffer 15 by the OR processing.

(C) The print data written in the print buffer 15 is
An area obtained by subtracting the backward amount n from the next receiving row position is output as a print area, and the area below that is held for printing.

(D) The print buffer 15 stores print information corresponding to the position of the next received line, and (e) the print buffer 15 subsequently stores the print information.
Then, the data is written in the reception row position corresponding to the position separated from the reception row position by the reception row movement amount L by the OR processing (partial overwriting).

(F) The print data written in the print buffer 15 is the print data held in print at the receive line position and the print data corresponding to the newly written receive line position. The area obtained by subtracting the amount n is output as the print area, and the area below that is printed.

By repeating the above operation, it is possible to sequentially print the characters and the print pattern on the preceding line without performing the backward movement of the paper or the print head.

It should be noted that the print data that has been print-held at the reception line position remains print-held unless a print command corresponding to the next reception line position is input. Therefore, the print data has a procedure to be output on the paper by being triggered by a timer timeout or operator operation.

〔The invention's effect〕

As described above, according to the present invention, it is possible to simplify the printing mechanism because the backward movement of the paper or the print head is not necessary when printing the character or the print pattern in the preceding line. Further, the influence of the positioning accuracy associated with the backward movement is avoided, and the print quality can be improved.

Further, the delay of the printing time due to the backward movement of the paper or the print head is eliminated, and it becomes easy to speed up the printer device that enables the printing of the character or the print pattern on the preceding line.

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

[Brief description of drawings]

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 state of the receive buffer and print buffer.
FIG. 6 is a diagram illustrating a print control operation that is a feature of the device of the present invention. FIG. 3 is a diagram for explaining a conventional method of printing a print pattern for the preceding line. 11 ... CPU, 12 ... Host interface, 13 ... Control program, 14 ... Receive buffer, 15 ... Print buffer, 16 ... Print interface.

Claims (1)

[Claims] 1. A printer device for controlling printing of a character and a print pattern on the preceding line by moving the print head for each receiving line position for receiving a print command for each line and moving backward from each receiving line position by a reverse amount n. For each reception line position, the print data of the region in which the print is held at the previous reception line position and the print data of the region in which the above-mentioned amount of backward movement n is subtracted from the position of the next reception line are output, and the regions below that are held in print. A printer device, comprising: print data control means for repeating processing, wherein the print data control means comprises means for outputting print data of a print-held area at a final reception line position at a predetermined timing.