JPH071179B2 - Recording device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus for performing a predetermined recording on a recording sheet, and particularly to a recording apparatus for detecting an abnormality of the recording sheet such as paper end detection or paper irregular feeding detection. Regarding

[Conventional technology]

2. Description of the Related Art A recording device for detecting an abnormality of a recording paper such as paper end detection or abnormal paper feeding is known.

Abnormality detection of recording paper such as paper end detection is to stop recording when the recording paper is finished or is misaligned and to protect the recording pen, etc. or eliminate wasteful operation. Since recording becomes impossible or random even if recording is performed, recording is re-recorded after replenishing the recording paper or resetting normally.

[Problems to be solved by the invention]

As described above, the conventional apparatus has a drawback that no treatment can be performed when the recording paper becomes abnormal.

In this case, if the signal to be recorded has reproducibility, the only problem is that recording is performed again.However, if an attempt is made to record a signal that does not have reproducibility, for example, a sudden phenomenon occurs. However, there is a drawback in that the fact itself cannot be recognized and the result is extremely inconvenient.

The present invention aims to eliminate such inconvenience.

[Means for solving problems]

For this reason, in the present invention, a sensor that detects a recording paper abnormality, a memory that operates according to the recording paper abnormality detection signal of the sensor, and that sequentially stores data during recording paper abnormality occurrence, and after the abnormality is removed. Control means for sequentially sweeping out the data stored in the memory in response to the write-in command, and recording means for recording the sweep-out data of the control means.

[Action]

When no abnormalities are detected on the recording paper, normal recording is performed,
When an abnormality of the recording paper is detected, recording is interrupted, but the interrupted data is stored in the internal memory.

After removing the abnormal condition such as replenishing the recording paper, the interrupted recording is performed by the write command.

In this case, if the recording during the interruption is performed at a recording speed higher than the normal recording speed, the recording delay can be eliminated.

It should be noted that the data can be stored in the memory while the recording is suspended for a longer time as the memory has a larger capacity.
In practice, since there is no choice but to limit the size to a certain size, the alarming means is used to prompt the recognition of the abnormal state and the data is thinned out.

〔Example〕

FIG. 1 is a block diagram showing an embodiment of the present invention.
Is a preamplifier that preamplifies the input signal, 2 is an A / D converter that converts the output of this amplifier 1 into a digital value, and 3 is this A
The control means 4 which receives the output digital value from the / D converter 2 and performs a predetermined process, the RAM 4 which temporarily stores the digital value processed by the control means 3, and the digital value 5 which is output from the control means 3 D / A to convert analog to analog signal
A converter, 6 is a main amplifier that mainly amplifies the output analog signal, 7 is a pen drive motor driven by the output analog signal of the main amplifier 6, 8 is a recording pen transported by the pen drive motor 7, and 9 is control means. 3 is a paper feed driver that receives the paper feed signal output from 3; 10 is a paper feed motor driven by the output signal of the paper feed driver 9; 11 is a recording paper driven by the paper feed motor 10; A sensor for detecting the abnormal state of the paper, 13 is a photocoupler for optically converting the abnormal state detection output of the abnormal state detection sensor 12 and transmitting it to the control means 3, and 14 is for re-recording after removing the abnormal state. , A photo coupler 15 for converting the output signal of the re-recording switch 14 into an optical signal and transmitting it to the control means 3.
Reference numeral 16 is an alarm means for informing the abnormal state of the recording paper 11.

The input signal, which is the signal to be measured, is input to the control means 3 through the preamplifier 1 and the A / D converter 2. The control means 3 processes this input digital value according to preset conditions and temporarily stores it in the RAM 4. Further, the control means 3 sequentially reads out the digital values and outputs a feed signal of the recording paper 11 to the recording means which is a post-stage circuit according to a preset condition. The digital value of the signal under measurement, which is one output from the control means 3, is the D / A converter 5.
And then converted into an analog signal and then amplified by the main amplifier 6. The main amplified analog signal drives the pen drive motor 7 and transfers the recording pen 8 in the width direction of the recording paper in a size corresponding to the signal to be measured. The other output signal, the paper feed signal, is input to the paper feed driver 9 and becomes a drive signal for the paper feed motor 10. The recording paper 11 is transported in a predetermined direction by a paper feed motor 10 at a predetermined speed.

As described above, in this apparatus, the recording means records the input signal, which is the signal to be measured, in accordance with the input signal by performing the digital processing.

Now, when an abnormal state is detected by the abnormal state detection sensor 12 of the recording paper 11, this abnormal state detection signal is input to the control means 3 via the photocoupler 13. At this time, the control means 3 issues a command to the alarm means 16 and the above-mentioned recording means in accordance with a predetermined order at this time to notify the abnormal state of the recording paper 11 and interrupt recording by the recording means. In this case, the control means 3 accepts the input of the signal under measurement even in the occurrence of this abnormal state, and the input digital value to the control means 3 during the interruption of the recording is sequentially written and stored in the RAM 4. If the operator removes the abnormal state of the recording paper during this period, the output of the abnormal state detection sensor 12 is turned off, and the control means 3 recognizes that the abnormal state has been released.

When the operator connects the rerecording switch 14, the control means 3
Issues a command to the recording means to sequentially sweep out the input digital values stored in the RAM 4 and reproduce the interrupted recording. In this case, in this embodiment, reproduction of the recording during the interruption is performed at high speed. By doing this, it is possible to eliminate the recording delay and to accept the input of a new signal under measurement even when the recording device is recording the recording data at the time of interruption.

In this case, the abnormal state is removed and the rerecording switch 14
When a long time elapses before the connection of the control unit 3 and the control unit 3 of this embodiment, the control unit 3 of this embodiment has a relatively long time in order to eliminate the inconvenience that the data at the relatively late input time is lost due to the memory capacity of the RAM 4. It has a special configuration to save the data.

That is, when the digital value stored in the RAM4 exceeds the memory capacity, the control means 3 thins out the digital value stored in the RAM4 at this time by a predetermined method and shifts at the same time to newly input the measured signal. Are stored in empty memory cells by thinning out the digital values. In this case, as the thinning processing, for example, every other digital value among the stored digital values may be thinned, or the average value of consecutive digital values may be set as a new data value. Good. Further, it is possible to detect the peak value of the stored digital value and leave the peak value.

As a result, even if the memory capacity of the RAM 4 is not so large, it is possible to cope with a long-time recording interruption without impairing the recording fidelity as much as possible.

In this embodiment, the abnormal state detection sensor 12
Various types of sensors may be implemented as the sensor shown as. For example, various types of paper end detection sensors, paper feed incapability sensors, irregular paper feed sensors, and the like have been proposed. Since the present invention relates to a series of operations initiated by the output signals of these sensors, details thereof will be omitted in this specification.

〔The invention's effect〕

As described above, according to the present invention, it is possible to realize a highly reliable recording device that does not cause recording loss even when an abnormality occurs on the recording paper of the recording device.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing the construction of an embodiment of the present invention. 3 ... Control means, 4 ... RAM, 12 ... Abnormality detection sensor, 1
4 …… Re-record switch

Claims (2)

[Claims] 1. A recording device for converting a signal to be measured into a digital value, performing a predetermined process by a control means, converting the signal to an analog signal, and recording by a recording means, a sensor for detecting abnormality of a recording paper, A memory for sequentially storing data in which a recording paper abnormality has occurred under the control of the control means by the recording paper abnormality detection signal of the sensor, and a data stored in the memory by a write command after removing the abnormality. A recording apparatus having a control means for sequentially sweeping out and a recording means for recording sweeping data of the control means. 2. The control means thins out the stored digital values according to a predetermined process when a digital value in the occurrence of a recording paper abnormality is stored in the memory and the memory capacity is full, and is newly input. The recording apparatus according to claim 1, wherein the digital value is stored in the memory.