JPS63112186A - Control of printing by detection of printing paper - Google Patents

Abstract

PURPOSE:To correct an error in setting a printing paper and enhance operability, by detecting the presence or absence of the printing paper by a sensor, and controlling a printing-starting position for a printing paper and the number of printing positions on the basis of the width of the paper. CONSTITUTION:Before starting printing, a carrier 106 provided with a printing head 108 and a paper sensor 107 in a body is moved from the left end to the right end. An output from the paper sensor 107 is inputted to a right end detecting circuit 204 and a left end detecting circuit 205 for a printing paper, thereby detecting the right and left ends of the paper, and detection signal are outputted to a left end position calculating circuit 207 and a left end position calculating circuit 208. An output from a reference sensor 110 is inputted to a reference detecting circuit 206, an edge of a shielding plate 112 is detected, and a detection signal is outputted to a reference position calculating circuit 209. An output from an encoder 103 is inputted to the calculating circuits 207, 208, 209, and calculated positions are outputted to a controlling part 210. The controlling part 210 calculates the difference between the reference position and the left end position, thereby correcting a printing-starting position corresponding to the first character. The controlling part 210 also calculates the difference between the left end position and the right end position, and prevents printing from being performed on a space outside the printing paper.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for controlling printing based on information about the condition and width of printing paper used in a printing apparatus.

2. Description of the Related Art Conventionally, data transferred from a higher-level device was printed regardless of the position and width of printing paper loaded in a printing device.

Problems to be Solved by the Invention In the past, since the position and width of the printing paper were not controlled when it was loaded, there were the following drawbacks.

(1) When the printing paper is mounted, if it is mounted with a deviation in the horizontal direction, the printing device for the printing paper will be misaligned.

(2) Even if the printout extends beyond the printing paper, the printing operation ends normally, so it was unclear whether the printing was correctly printed on the printing paper until after the printing was completed.

The present invention has been made in view of the above-mentioned conventional situation,
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to eliminate the above-mentioned drawbacks inherent in the conventional technology and to provide a novel print control method that detects the presence or absence of printing paper and controls printing.

Means for Solving the Problems In order to achieve the above object, the printing control method according to the present invention includes: providing a printing paper detection sensor in the carrier section of the printing device;
This detection sensor detects the left end and right end of the printing paper and corrects the print start position of the line from these. It is also characterized in that it calculates the width of the printing paper and performs printing control based on control data such as the printing paper width that is transferred in advance from a higher level.

Embodiment Next, a preferred embodiment of the present invention will be specifically described with reference to the drawings.

FIG. 1 is a perspective view for explaining one embodiment of the present invention.

In FIG. 1, the printing paper 102 is loaded by the operator, and at this time, as shown in FIG.
11.

Before starting printing, the print head 108. Paper detection sensor 107
The integrated carrier 106 is connected to the timing belt 10.
Carrier shaft 1 by carrier motor 105 via 4
09 from the leftmost end to the rightmost end. During this movement, the reference sensor 110 detects the shield plate 112 which indicates the position where the printing paper 102 should be properly loaded. Paper detection sensor 107 detects the presence or absence of printing paper 102, and encoder 103 detects the amount of movement of the carrier.

The output from the paper detection sensor 107 is sent to the print paper right edge detection circuit 204. and is input to the left edge detection circuit 205, and the right edge and left edge are detected based on the difference in light reflectance between the platen 101 and the printing paper 102, and the right edge position calculation circuit 20 respectively
7, output to the left end position calculation circuit 208.

The output from the reference sensor 110 is sent to a reference detection circuit 206, which detects the edge of the shielding plate 112, and output to the reference position calculation circuit 209. The output from the encoder 103 is sent to the right end position calculation circuit 207. Left end position calculation circuit 2
08. It is input to the reference position calculation circuit 209.

The reference position calculation circuit 209 calculates the position of the carrier 106 by detecting the reference and inputting the encoder signal, and outputs the calculated position to the control unit 210 as the reference device position of the printing paper. The right edge position calculation circuit 207 calculates the position of the carrier 106 by detecting the right edge and inputting an encoder signal, and outputs the calculated position to the control unit 210 as the right edge position of the printing paper. Similarly, the left edge position calculation circuit 208 calculates the position of the carrier 106 based on left edge detection and encoder signal input, and outputs it to the control unit 210 as the left edge position of the printing paper.

The control unit 210 can obtain the amount of deviation when the printing paper 102 is installed by calculating the difference between the reference position and the left end position. By correcting the printing start position of the first character based on this amount of deviation, it is possible to eliminate printing deviation.

Also, by calculating the difference between the left end position and right end position,
The width of the printing paper 102 can be obtained, thereby -
Since it is possible to know the number of characters that can be printed in a line, it is possible to prevent printing from extending beyond the printing paper. In other words, - If data exceeding the number of characters that can be printed in a line is transferred from a higher-level host, it can be printed on the next line with a new line, or it can be printed out of the printing paper by notifying the higher-level unit that there is an abnormality. Prevent printing.

Note that the decision as to whether to notify the higher level as an abnormality or to print on the next line with a line break is based on control data that is transferred in advance as control data from the higher level.

DETAILED DESCRIPTION OF THE INVENTION As described in detail, according to the present invention, it is possible to correct misalignment of the printing paper when loading the printing paper into the printing device, so it is possible to facilitate the loading of the printing paper. , the effect of improving operability can be obtained. at the same time,
Since printing that protrudes from the printing paper can be prevented, it has the effect of preventing wear of the print head and platen due to color printing.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of a printing device for explaining one embodiment of the present invention, and FIG. 2 is a block diagram for explaining the present invention in detail. 101, , platen, 102. , ,Printing paper, 10301. encoder, 104. , , timing belt, 105, , , carrier motor, 106
．． , ,Carrier, 107, ,Paper detection sensor, 108. , , print head. 109, , , carrier axis, 110. , ,Reference sensor.

Claims (1)

[Claims] A printing control method using printing paper detection, characterized in that the presence or absence of printing paper installed in a printing device is detected by a sensor, and the printing start position on the printing paper and the number of prints are controlled according to the width of the printing paper.