JPS62238780A - Printer - Google Patents

Abstract

PURPOSE:To enable a setting position of a printing paper to be freely changed, by setting the first printing-starting position according to detected position information supplied from a means for detecting a set position of the printing paper. CONSTITUTION:An optical sensor 12 is used as a printing paper position detector 2, and is fitted to a carriage 13. The carriage 13 is moved leftward and rightward relative to a printing paper 11 through transmission of drive by a spacing belt 14, and when the left end of the paper 11 is detected by the sensor 12 in this movement, a printing head 15 is set to the first printing-starting position. Thus, the set position of the printing paper is detected by the detector 2, and the first printing-starting position is set according to the detected position, whereby a setting position of the printing paper can be freely changed within a spacing range of the printing head, without modifying a control code in a host device for controlling a printer.

Description

DETAILED DESCRIPTION OF THE INVENTION 3. TIH DESCRIPTION OF THE INVENTION Technical Field The present invention relates to printers, and more particularly to serial printers.

BACKGROUND ART Conventionally, in this type of printer, the setting position of printing paper was fixed with respect to the transverse feed Ia mechanism in printing position control of the transverse feed mechanism.

In this way, the cellar 1 position of the printing paper is always fixed,
To change the print paper set position, the host device that controls the serial printer must send a control code to change the print position, and the serial printer itself cannot control the print paper set position to be changed. There was a drawback.

OBJECTS OF THE INVENTION The present invention has been made to eliminate the above-mentioned drawbacks of the conventional printers, and an object of the present invention is to provide a printer in which the setting of printing paper can be freely changed.

Structure of the Invention The printer according to the present invention is characterized in that it has a detection means for detecting the set position of printing paper, and the first printing position is set based on detected position information from the detection means.

EXAMPLE Next, an example of the present invention will be explained with reference to the drawings.
Do 1.

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a timing diagram of one embodiment of the present invention.

In FIG. 1, the Kimi tS example has a print paper position detector (not shown in the figure) that is attached to the horizontal feed mechanism section 1 of the print head and the horizontal feed structure section 1 to detect the position of the set print paper. A first printing position is set using a detection signal from a VA (for example, a photo sensor, etc.) 2 and a printing paper position detector 2.
It is composed of a print position setting circuit 3, a printer control circuit 4, and a lateral feed mechanism control circuit 5.

In FIG. 2, (a) shows the horizontal feed position range of the print head, (b) shows the printing paper set position, (C) shows the printing paper detection signal, and (d) shows the first printing start timing.

In these figures, when the printing paper position detector 2 detects the position (B) of the set printing paper (see Fig. 2 (b)) by parallel movement of the horizontal feed mechanism section 1, the position of this printing paper is detected. ! A detection signal corresponding to (B) is sent to the first print position setting circuit 3.

In the first print position setting circuit 3, according to this detection signal,
A first printing start timing B1 is set and output to the printer control circuit 4. The printer control circuit 4 controls the transverse feed mechanism control circuit 5 to drive the transverse feed mechanism section 1 so that the first printing is performed in response to the first print start timing B1.

In addition, the printing paper cellar 1- (the orientation is shown in FIG. 2(b))
13) to (Δ), the printing paper position detector 2 detects this position (A>), and the first printing position setting circuit 3 changes the first printing start timing to 81 according to this detection signal. Change the settings from A1 to printer control circuit 4.
Output to. That is, the first printing start position is changed depending on the setting position of the printing paper, and the predetermined positional relationship is always maintained between the printing paper setting position and the first printing start position.

FIG. 3 is a perspective view showing a specific example of this embodiment.

In the figure, an optical photosensor 12 is used as the printing paper position detector 2 shown in FIG.
is attached to the carriage 13. Carriage 1
3 is driven by a spacing belt 14 and moves left and right with respect to the printing paper 11, and this carriage 13
When the photosensor 12 detects the left edge of the printing paper 11 by moving left and right, the print head 15 moves to the first mark. Set to starting position.

In this way, by detecting the set position of the printing paper by the printing paper position detector 2 and setting the first printing start position accordingly, the control code of the host device (not shown in the figure) that controls the printer can be controlled. The setting position of the printing paper can be freely changed without changing it, as long as it is within the range of horizontal feeding of the print head.

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, the setting position of the printing paper can be freely changed by detecting the setting position of the printing paper and setting the first printing start position accordingly. This has the advantage that it is possible to provide a printer that can

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, FIG. 2 is a timing diagram of one embodiment of the present invention, and FIG. 3 is a perspective view showing a specific example of one embodiment of the present invention. Explanation of symbols of main parts

Claims (1)

[Claims] A printer characterized in that it has a detection means for detecting a set position of printing paper, and a first printing start position is set based on detected position information from the detection means.