JPH0230444B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a thermal recorder, and particularly to a display that makes input signals visible immediately after recording.

[Technical background of the invention and its problems]

With a pen recorder, the pen is placed in the front to record, so you can see the record immediately after recording, but with a thermal recorder, the thermal head is located inside and cannot be seen from the front, so it is possible to see the record immediately after recording. It was not possible to see the records for several minutes to tens of minutes until the records were brought to the front by paper feed. Even if the input signal is also input to the indicator, the indicator can only read the value at the moment of input.
I was unable to see the time from immediately after that until the record came to the fore.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a thermal recorder that allows input signals to be visually recognized immediately after recording.

[Summary of the invention]

The present invention provides a recording control unit that samples an input signal at each interval of recording paper intermittent feeding and outputs a recording pattern signal that specifies the digit position of a thermal head corresponding to the input signal, and In a thermal recorder having a head driver that drives a heating element of a thermal head based on a pattern signal, and a thermal head that records on a thermal recording paper whose drive is controlled by this head driver, a recording pattern input from the recording control section is used. A shift that sequentially shifts the signal each time it is input and holds it until the number of shifts equal to the number of inputs included in the moving length of the recording paper until the recorded pattern on the recording paper immediately after recording with the thermal head can be seen from the front of the recorder. a display matrix having a length in the recording paper feeding direction equal to the length obtained by multiplying the number of shifts of the shift register by the intermittent feed length per recording paper feed and a width equal to the recording paper width; a display placed on the front of the recorder and positioned at almost the same level as the recording area of the thermal head;
A display control unit is provided which reads the contents of the shift register each time a shift is made and displays the record pattern most recently input to the display matrix of the display device so that it is positioned at the upper end of the display matrix. The purpose has been achieved.

[Embodiments of the invention]

An embodiment of the present invention will be described with reference to FIGS. 1 to 3. 1 is a side view of a thermal head portion of a thermal recorder, FIG. 2 is a view taken along arrow A in FIG. 1, and FIG. 3 is a block diagram showing the structure of the thermal recorder. As shown in FIG. 1, the content recorded on the thermal recording paper 3 by the thermal head 1 will not appear in front of the recorder unless the recording paper 3 is moved the distance l shown in the figure by the intermittent feeding by the roller 2. Not coming. Therefore, a display 4 corresponding to this length l is provided on the front of the recorder. For example, a liquid crystal display is used as the display.

The configuration of a thermal recorder provided with a display 4 is shown in FIG. The recording control section 11 samples the input signal at every interval of intermittent feeding of the recording paper, and outputs a recording pattern signal that specifies the digit position of the thermal head corresponding to the signal value. This recording pattern signal is input to the head driver 12 and shift register 13 in parallel. Head driver 12
drives the heating element of the thermal head 1 based on the input recording pattern signal. Thermal head 1
records signals on thermal recording paper.

The shift register 13 sequentially shifts the input recording pattern signal each time it is input and holds it until the number of shifts is equal to the number of inputs included in the length l shown in FIG. The display control unit 14 reads out the contents of the shift register 13 each time a shift is performed and causes the display 4 to display it.

In the thermal recorder according to the present invention configured as described above, the input signal sampled by the recording control section 11 becomes a recording pattern signal and enters the head driver 12, and the head driver 12 drives the thermal head 1 to perform thermal recording. The recording pattern signal is recorded on the paper 3, but at the same time, the recording pattern signal is entered into the shift register 13 and held therein.
The display control section 14 reads out the contents of and displays them on the upper end of the display matrix 5 (see FIG. 2) of the display 4. When the recording pattern signal of the input signal sampled next by the recording control unit 11 is input to the shift register 13, the recording pattern signal inputted last time and held is shifted by one step and is held together with the current data. Ru. When the display control unit 14 reads out the contents of this shift register 13 and displays it on the display 4, the previous input signal is displayed on the display matrix 5 as the length of one intermittent feed of the recording paper 3 △
The current input signal is displayed at the upper end of the display matrix 5 in the figure. That is, the same pattern as the recording state recorded on the recording paper 3 is displayed on the display matrix 5 of the display 4.

In this way, the number of movements required for the first input signal recording to move by the intermittent feed length △l of the recording paper and move the length l shown in FIG. The input data of the shift register 13 is held until the number of shifts equal to the number of input signals included in the length. Therefore, on the display matrix 5 of the display 4, new input signals are added one after another while the first input signal record is sequentially moved by intermittent feeding until it reaches the lower end of the figure in the display 4. The current state will be displayed on the shift screen as it is. The input signal curve on the display matrix 5 of the display 4 is continuously connected to the input signal curve on the recording paper 3 appearing in front at the bottom of the display 4 as shown in FIG. Second
In the figure, 21 is the record of the input signal on the recording paper 3, and 22 is the display matrix 5 of the display 4 which shows the input signal record on the recording paper in the part that has not yet appeared in the front. This is the display. As described above, according to the thermal recorder according to the present invention, it is possible to visually recognize the input signal value immediately after it is recorded by the thermal head.

Note that the input signal sampled without the recording paper is stored in memory (a cassette tape may be used), and at the same time, the input signal is shifted and displayed on the display that spans the entire front of the recorder using the shift register and display control section. It is also possible to do so. In this way, a recorder without moving parts can be realized.

〔Effect of the invention〕

According to the present invention, in the thermal recorder,
A shift register is provided in parallel with the head driver to receive an output signal from a recording control section that samples an input signal and outputs it as a recording pattern signal, and the recording pattern signal is sequentially shifted each time it is input and held until a predetermined number of shifts. By providing a display control section that reads the contents of this shift register each time a shift is made and displays the shift on the display provided on the front of the thermal recorder, the recording status of the input signal on the recording paper can be sequentially changed immediately after recording with the thermal head. Since the information is displayed on the display, it becomes possible to visually check recorded data immediately after recording, which was impossible with conventional thermal recorders, and it is possible to provide a thermal recorder that also has an instruction function.

[Brief explanation of drawings]

1 to 3 show an embodiment of a thermal recorder according to the present invention, in which FIG. 1 is a side view of the thermal head portion, FIG. 2 is a view taken in the direction of arrow A in FIG. 1, and FIG. FIG. 2 is a block diagram showing the configuration of a thermal recorder. 1...Thermal head, 2...Roller, 3...
Thermal recording paper, 4... Display device, 5... Display matrix, 11... Recording control section, 12... Head driver, 13... Shift register, 14... Display control section, 21... Input signal recording, 22 ...Input signal display.

Claims (1)

[Claims] 1. A recording control unit that samples an input signal at each interval of recording paper intermittent feeding and outputs a recording pattern signal that indicates the digit position of the thermal head corresponding to the input signal, and a recording pattern signal from this recording control unit. In a thermal recorder, the thermal recorder has a head driver that drives the heating element of the thermal head, and a thermal head that is driven and controlled by the head driver to record on thermal recording paper. a shift register that sequentially shifts each time and holds the pattern until the number of shifts equal to the number of inputs included in the moving length of the recording paper until the recording pattern on the recording paper immediately after recording with the thermal head reaches a position where it can be seen from the front of the recorder; A display matrix having a length in the recording paper feeding direction equal to the length obtained by multiplying the number of shifts of the shift register by the length of intermittent feeding per recording paper and a width equal to the width of the recording paper is provided, and the upper end of this display matrix is connected to the thermal head. A display is positioned on the front of the recorder and positioned at almost the same level as the recording area, and the contents of the shift register are read each time a shift is made, and the most recently input recording pattern is displayed on the display matrix of the display at the top of the display matrix. 1. A thermal recorder comprising: a display control unit configured to display a display so as to be located at