JPH06162425A - Method for automatically correcting recording start position of recording medium and device for recording medium - Google Patents

Abstract

(57) [Summary] [Object] An automatic correction method for correcting the recording start position of a recording apparatus is intended to provide an automatic correction method for the recording start position of a recording medium that saves adjustment man-hours. [Structure] A detection unit 8 for detecting the leading end of the recording medium 1 conveyed by the conveying unit 40, a recording unit 9 for starting data recording on the recording medium 1 conveyed for a predetermined distance after detection, and a recording data reproducing unit 10. An automatic recording start position correction method for a recording medium of a recording device that reproduces the recorded data to check whether the recording data is correct or not, continuously records first data having a predetermined signal period from the leading end, and firstly records the first data at a position conveyed by a predetermined distance. Second data having a signal cycle different from that of the first data is recorded, the recording is reproduced, and the total number of signal cycles of the first data up to the switching position is counted by the first counting means 14, The calculation unit 15 divides the total number of signal periods by the recording density to obtain the distance to the recording start position, corrects the difference from the set distance, and sets the conveyed position as the recording start position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medium recording apparatus for recording data on a card- or ticket-shaped recording medium by magnetism or the like, and more particularly, to a feed distance from a leading end of the recording medium to a recording start position and a prescribed distance. The present invention relates to a method of automatically correcting a recording start position of a recording medium and a medium recording apparatus capable of correcting the start position by obtaining a difference.

Recently, card-shaped recording media such as credit cards and tickets are mainly magnetic recording, which is convenient for recording a limited amount of recording data. Recently, CRS has been used for airline tickets and the like. (Computer Reservation Syste
The ticket issuing device has been developed as a terminal of the ticket reservation / issuing system called m), and the issued tickets will be used mutually by airlines, so data will be recorded on these recording media. It is necessary to set the accuracy of the recording start position at the time within a certain limit, and it is defined in ISO and JIS standards.
(For example, 7.44 mm ± 1.0 mm).

Therefore, although the error in the card transport amount of the airline ticket issuing device is corrected, it takes a lot of time to develop and measure the recording medium on which the data is actually recorded, and therefore a method capable of easily correcting is desired. ing.

[0004]

2. Description of the Related Art FIG. 7 is a side sectional view showing an example of an air ticket issuing device. As shown in the figure, the air ticket issuing device is a continuous medium air ticket (hereinafter referred to as a card) 1a which is perforated before cutting. The medium accommodating portions 2a and 2b that are folded and accommodated in the medium accommodating portion 2
A pre-feed section 3 for cutting the card 1a supplied from a and 2b at perforations and making it stand by, a magnetic recording section 5 for magnetically recording data on the card 1a conveyed through a conveying path 4 composed of a belt mechanism 40a, a card 1a is composed of a printing unit 6 for printing data by a thermal printer (not shown), and an issuing port 7 for issuing the card 1a.

A card 1a supplied from the medium accommodating portions 2a and 2b
(Not shown) are individually sent to the respective units arranged in parallel on the left and right for processing. This is because the air tickets are classified and issued. Since the respective parts arranged on the left and right have exactly the same functions, only one side will be described below.

As shown in FIG. 8, the magnetic recording unit 5 has a sensor 8a for detecting the front end of the card 1a and a predetermined size from the sensor 8a.
It is composed of a recording head 9a provided at the rear of L1 and a reproducing head 10a provided at the rear of the recording head 9a, and a sensor S1 provided at the rear of the recording head 9a for detecting the rear end of the card 1a.

Further, as shown in FIG. 9, a magnetic stripe MS having a predetermined width and the same length as the card 1a is provided on the back surface of the card 1a. With such a configuration, for example, when the card 1a supplied from the medium accommodating section 2a and waiting in the pre-feed section 3 is sent out from the pre-feed section 3 by a ticket issuing command, the belt mechanism 40a sends the transport path 4 to the transport path 4. To be After the tip of the card 1a is detected by the sensor 8a, as shown in FIG. 10, boarding reservation data (departure date / time, flight number, passenger name, etc.) transmitted from an external device from a position conveyed by a predetermined distance S. Is recorded on the magnetic stripe MS by the recording head 9a.

The data recorded on the magnetic stripe MS is reproduced by the reproducing head 10a and the recorded data is checked. If the data is normal, the card 1a is sent to the printing unit 6 to print the data and sent from the issuing port 7. .

The rear end of the card 1a is detected by the sensor S1 to notify the completion of the issuing of the card 1a, and the pre-feed unit 3 of the succeeding card 1a can send the card. Here, the position of the predetermined distance S from the detection of the tip of the card 1a is the position of the distance L2 (that is, L2 = S−L1) from the tip of the magnetic stripe MS to the recording head 9a, and this distance L2 is , It is necessary to be within a certain error range for a predetermined size.

That is, if the distance L2 is too small, it becomes difficult to synchronize the signals at the time of reading and reading becomes impossible, and if it is too large, the recording area of the magnetic stripe MS is narrowed and there is a possibility that data may be leaked. To ensure stable reading and recording area, stipulated in ISO and JIS standards as mentioned above (eg 7.44mm ± 1.0mm)
Has been done.

However, even if the predetermined distance S is set accurately, there is an error in the mechanical feeding accuracy of the belt mechanism 40a, which causes an error in the distance L2. Therefore, a method of actually recording data on the card 1a, measuring the recording start position, and adjusting the error amount is used.

As the adjusting method, there are two methods A and B as follows. 1) Method A After recording data on the magnetic stripe MS of the card 1a by the above method, visualize the magnetic pattern using a developer and measure the distance L2 to the recording start position with a magnifying glass with a scale or the like. taking measurement. In the developing method in this case, when a developer in which magnetic powder is mixed with a volatile liquid is applied to the magnetic stripe MS, volatile components are volatilized and the magnetic powder remains in the data portion.

If the measurement result shows that the error is out of the specified value, the relative position between the sensor 8a and the recording head 9a is adjusted by changing the mounting position of the sensor 8a, and magnetic recording and development are performed again. Measure the recording start position. That is, accuracy is obtained by trial and error.

In this case, if the mounting position of the sensor 8a is simply shifted, a fine adjustment mechanism for the position of the sensor 8a may be provided. 2) Method B It is the same as the method A described above until the data is recorded on the magnetic stripe MS of the card 1a and developed, but from the time the sensor 4a detects the leading edge of the card 1a until the recording is started. Adjust the moving distance of the card 1a.

That is, in this method, an encoder (not shown) is provided on the drive pulley of the belt mechanism 40a for conveying the card 1a to count the moving distance of the card 1a and
Recording is started when a predetermined count value is reached after 8a detects the tip of the card 1a.

If there is an error in the recording start position after development and measurement, the count value is increased or decreased to adjust the recording start position. If a stepping motor is used to drive the drive pulley, the number of motor steps is increased or decreased instead of the encoder.

[0017]

According to the above-mentioned conventional method, in any of the methods A and B, there is a step of developing, measuring, and adjusting after recording data on the magnetic stripe of the card. There is a problem that it takes a long time.

It is an object of the present invention to provide an automatic correction method for a recording start position of a recording medium and a medium recording apparatus which can save a working time required for correcting the recording start position of a recording medium.

[0019]

1 and 2 are principle diagrams of the present invention, FIG. 1 is a principle diagram corresponding to claim 1, and FIG. 2 is a principle diagram corresponding to claim 2.

1) Means corresponding to claim 1 FIG. 1A is a configuration diagram, and FIG. 1B is a process diagram of recording start position correction. In the figure, 1 is a recording medium, 8 is a detecting means, 9 is a recording means, 10 is a reproducing means, 14 is a first counting means, 15 is a first calculating means, 40 is a conveying means, and therefore, a conveying means 40. First data having a predetermined signal period is continuously recorded by the recording means 9 from the leading end of the conveyed recording medium 1,
The recording medium 1 is switched to the second data having a signal period different from that of the first data at a position where the leading end of the recording medium 1 is conveyed by a predetermined distance after being detected by the detecting means 8 and the recording is performed by the reproducing means 10. The recording is reproduced, and the first counting means 14 counts the total number of signal periods of the first data from the tip to the position where the first data is switched to the second data.
The total number of signal periods is divided by the recording density by the calculation means 15 to obtain the distance to the recording start position, the difference from the preset distance to the recording start position is obtained, and the division is obtained. The distance to the start position is corrected by the distance corresponding to the difference, and the conveyed position is set as the recording start position.

2) Means corresponding to claim 2 In FIG. 2, 1 is a recording medium, 40 is a conveying means for conveying the recording medium 1, and 8 is detection for detecting the leading end of the recording medium 1 conveyed by the conveying means 40. Reference numeral 16 is a correction instruction means for instructing correction of a position at which recording of data on the recording medium 1 is started, and reference numeral 9 is for detecting the front end of the recording medium 1 by the detecting means 8 when recording data on the recording medium 1. The recording is started from the position conveyed by a predetermined distance from the correction instruction means 16
When the position to start recording on the recording medium 1 is adjusted on the basis of the instruction from, the first data having a predetermined signal period is continuously recorded from the front end of the recording medium 1 conveyed by the conveying means 40, and the recording is performed. Recording means for switching and recording to the second data having a signal period different from the first data at a position where the leading end of the medium 1 is conveyed for a predetermined distance after being detected by the detecting means 8, and 10 is recording of the recording medium 1. Playing means for playing
14 is for adjusting the position to start recording on the recording medium 1,
The first counting means 15 for counting the total number of signal periods of the first data from the tip of the recording medium 1 on which the recording is reproduced by the reproducing means 10 to the position at which the first data is switched to the second data, The total signal period number of the first data is divided by the recording density to obtain the distance to the recording start position, the difference from the preset distance to the recording start position is obtained, and the distance corresponding to the difference is divided. This is a first calculation means for correcting the distance to the recording start position obtained by calculation.

Therefore, when recording data on the recording medium 1, the recording medium 1 is conveyed to the position corrected by the first calculating means 15 and recording of the data is started.

[0023]

[Action]

1) Action corresponding to claim 1 After the detection means 8 detects the leading end of the recording medium 1 conveyed by the conveyance means 40, the recording means 9 continuously records the first data having a predetermined signal period, At a position where the recording medium 1 is conveyed a predetermined distance from the front end, the second data having a signal period different from the first data is switched and recorded.

Next, the first means of the recording medium 1 is reproduced by the reproducing means 10.
Data and second data are reproduced, and the first counting means 14
The total number of signal periods from the tip to the position where the first data is switched to the second data is counted.

By the first computing means 15, the first counting means
The total number of signal periods of the first data counted by 14 is divided by the recording density to obtain the distance to the recording start position, and the difference from the preset distance to the recording start position is obtained and divided. The calculated distance to the recording start position is corrected by the distance corresponding to the difference.

By setting the corrected position as the recording start position of the recording medium 1, the recording start position of the recording means 5 with respect to the recording medium 1 can be automatically corrected, and after recording the data, development and measurement are performed. Since the process of adjusting the recording start position of the recording medium is eliminated, the working time required for correcting the recording start position of the recording medium can be saved.

2) Operation corresponding to claim 2 When the correction instructing means 16 instructs the correction of the position where the recording of the data on the recording medium 1 is started and the conveying means 40 conveys the recording medium 1, the recording medium 1 The first data having a predetermined signal period is continuously recorded by the recording unit 9 after the detection unit 8 detects the leading edge, and the first data is conveyed from the leading end of the recording medium 1 by a predetermined distance, which is different from the first data. Recording is performed by switching to the second data having a signal period.

Next, the first means of the recording medium 1 is reproduced by the reproducing means 10.
Data and second data are reproduced, and the first counting means 14
The total number of signal periods from the tip to the position where the first data is switched to the second data is counted.

First counting means by the first computing means 15
The total number of signal periods of the first data counted by 14 is divided by the recording density to obtain the distance to the recording start position, and the difference from the preset distance to the recording start position is obtained and divided. The recording start position, which has been set by the distance corresponding to the difference, is corrected.

When the instruction by the correction instruction means 16 is released and the recording medium 1 is conveyed to record data, the recording is automatically performed by conveying the recording medium 1 to the corrected position and setting the recording start position of the recording medium 1. The recording start position of the recording means 9 for the medium 1 can be corrected, and the steps of developing, measuring, and adjusting after recording the data are eliminated, and the work time required for correcting the recording start position of the recording medium can be saved. Therefore, the accuracy of the recording start position can be improved.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to the air ticket issuing device described in the conventional example will be described below with reference to FIGS. The same reference numerals denote the same objects throughout the drawings.

The card 1a, the sensor 8a, and the recording head 9 shown in FIG.
a, the reproducing head 10a, the correction mode designation button 160, and the belt mechanism 40a are the recording medium 1, the detecting means 8, and the detecting means 8 shown in FIGS.
Recording means 9, reproduction means 10, correction instruction means 16 and conveyance means
40, and the main controller 11 in FIG. 3 corresponds to the first counting means 14 and the first computing means 15 in FIGS. 1 and 2.

In the block diagram of FIG. 3, 11 is a main control section, 16a is an operation panel, 17a is a clock generator, 17b is a clock counter, 18 is RAM, 19 is a data receiving section, and 20 is a data receiving section.
Is a motor driver, 21 is a sensor amplifier, and 22 is an amplifier.

The operation panel 16a is provided with a power switch of the apparatus and a correction value mode instruction button 160 for setting a correction mode for determining a correction value of the position where the recording of the card 1a is started.
The clock generator 17a transmits a clock signal of frequency F.

The clock counter 17b (corresponding to the second counting means in claim 3) is provided at the rear end of the card 1a after the sensor 8a detects the front end of the card 1a when the correction mode instruction button 160 is pressed. The number of all clock signals M sent from the clock generator 17a until the detection is released is counted. Figure 5
(b) shows the timing of the sensor detection signal and the clock signal. That is, the time required for the card 1a having the correct size to pass the sensor 8a is counted by the clock signal of the frequency F.
This is to measure the transport speed accurately.

The RAM 18 stores the value of the frequency F of the clock signal transmitted from the clock generator 17a and the recording frequency f of the data "0" generated from the correction mode data generator 13 which will be described later.

The data receiving section 19 receives data to be recorded in the card 1a sent from an external device. The main control unit 11 includes a CPU and a control program, and the CPU controls the above units according to the control program to convey the card 1a,
Predetermined recording is performed on the magnetic stripe MS, reproduction is checked to check the recording, data is printed and transmitted to the card 1a, and the value of the frequency F of the clock signal of the clock generator 17a is stored. When the button 160 is pressed, the error in the recording start position is detected by the series of control shown in FIG. 4 to automatically correct the recording start position.

That is, the main control unit 11 includes the transfer time setting unit 12
(Corresponding to the storage means of claim 5), the correction mode data generator 13, the cycle counter 14a, the calculator 15a (the first calculator 15 of claims 1 and 2 and the claim 3). Second
(Corresponding to the calculation means of) and an allowable value setting unit 34.

FIG. 4 is a block diagram showing a part of the function of the main control unit 11 (correction mode data generation unit 13) except that the cycle counting unit 14a is the peak detection unit 2 in FIG.
3. Comprised of a cycle detection unit 24 and a counter 25, the calculation unit 1
5a is a conveyance speed calculation unit 26, a recording density calculation unit 27, a recording start position calculation unit 28 (the conveyance speed calculation unit 26 and the recording density calculation unit 27 correspond to the second calculation means of claim 3), And a correction time calculation unit 31. The function of each unit will be described below.

The transport time setting unit 12 initially has a theoretical transport time t (= the distance S / to a recording start position, which will be described later) from when the sensor 8a detects the front end of the card 1a to when data recording is started. Although the conveyance speed V) is set, when the correction time Δt described later is obtained, the correction conveyance time t ′ (= t
+ Δt) and set.

The correction mode data generating section 13 stores the data "0" and "1", and when the correction mode is instructed by pressing the correction mode instruction button 160, the sensor 8a detects the tip of the card 1a. Data "0" to be recorded from the time point to the data recording start position (conveyance time t of the card 1a)
And data "1" to be recorded is generated from the recording start position of the data. FIG. 5A shows the timing of the sensor detection signal and the recording signal. The magnetic reversal period of the data "0" and the data "1" has a ratio of 2: 1, and the magnetic reversal frequency of the data "0", that is, the recording frequency is f.

The cycle counting section 14a uses the magnetic field of the data "0" reproduced by the reproducing head 10a from the tip of the card 1a on which the data "0" and the data "1" shown in FIG. 5 (c) (a) are recorded. The peak detector 23 detects the peak of the output signal corresponding to the inversion, and detects the switching from the data "0" to the data "1" as shown in FIGS. 5 (c), (b) and (c). The total number of cycles N up to is counted by the counter 25.

That is, the total number N of cycles until the cycle detecting section 24 detects the switching from the cycle of data "0" to the cycle of data "1" is counted. FIG. 5 (c) (d) is a signal in which it is detected that the period of the peak signal has become shorter due to switching from data "0" to data "1".

The carrying speed calculation unit 26 divides the clock frequency F read from the RAM 18 by the value of all clock signals M counted by the clock counter 17b to obtain a value F / M.
The length L of the card 1a is multiplied to obtain the transport speed V (= LF / M).

The recording density calculation unit 27 divides the recording frequency f read from the RAM 18 by the transport speed V to obtain the recording density f /
Find V. The recording start position calculator 28 is composed of a distance calculator 29 and a comparator 30, and the distance calculator 29 has a period counter 14
The total number of cycles N counted by a is divided by the recording density f / V calculated by the recording density calculation unit 27 to obtain the distance S (= NV / f) to the recording start position. The absolute value ΔS of the difference between S and the preset distance S ₀ to the recording start position is obtained and compared with the specified value S _L of the allowable error limit set in the allowable value setting section 34, and ΔS> S _L When ΔS ≦ S _L is judged, and when ΔS> S _L , the correction of the recording start position is “necessary”,
When ΔS ≦ S _L, the main control unit 11 is notified that the recording start position is corrected “not required”.

The correction time calculation unit 31 includes a correction data calculation unit 32.
And a correction transport time calculator 33, and a correction data calculator 32
Is a correction time Δt (= ΔS / V) calculated by dividing the difference ΔS obtained by the comparator 30 by the transport speed V according to a command from the main control unit 11 when the recording start position needs to be corrected. When the correction time Δt is obtained, the correction conveyance time calculator 33 calculates the correction time Δt based on the conveyance time t initially set in the conveyance time setting unit 12.
Correct with. That is, the corrected transport time t ′ = t ± Δt is calculated.

In addition to feeding the card 1a from the pre-feed unit 3 to the magnetic recording unit 5 described with reference to FIG. 7, the airline ticket issuing device also corrects the card 1a (correct length L from the vicinity of the front end of the transport path 4). ) Is inserted and sent to the magnetic recording unit 5, an insertion opening (not shown) is provided.

Since it has such a configuration and function, its operation will be described below with reference to the flowchart of FIG. First, the apparatus power is turned on, the correction mode instruction button 160 on the operation panel 16a is pressed to set the correction mode, and the correction card 1a is inserted from the vicinity of the front end of the conveyance path 4, and the belt mechanism 40a opens the card 1a. Convey and transport the tip to the sensor 8a
Is detected, the clock counter 17b is activated to count the number of all clock signals (frequency F) M until the detection is released at the rear end of the card 1a. Therefore, the transport speed calculator 26
Then, an accurate transport speed V is obtained from the length L of the card 1a and the entire clock signal M. That is, V = L × F / M is calculated.

Further, the recording density calculator 27 calculates the recording density f / V by dividing the recording frequency f read from the RAM 18 by the transport speed V. On the other hand, from the time when the sensor 8a detects the leading edge, recording is performed using the transportation time t that is initially set in the transportation time setting unit 12. Before the recording start time t, the data "0" is continuously output from the correction value determination data generator 13 and the magnetic head 9a
Then, the data is recorded on the magnetic stripe MS of the card 1a, and after the recording start time t, the data is switched to "1" for recording.

This time, the conveyed card 1a reproduces the data "0" from the leading end by the reproducing head 10a, and the total number N of peak cycles detected by the peak detector 23 in the cycle counter 14a.
Is counted by the counter 25 until the cycle detector 24 detects that the data “0” is switched to the data “1”.

The recording density f / V calculated with the counted total number of cycles N is sent to the recording start position calculator 15a, and the distance calculator 29 obtains the distance S to the recording start position. That is,
Calculate S = N × V / f.

Then, in the comparator 30, the absolute value ΔS (= S) of the difference between the distance S and the preset distance S ₀ to the recording start position is set.
S-S ₀ ) is calculated and compared with the specified value S _L of the allowable value setting section 34 to determine whether ΔS> S _L or ΔS ≦ S _L , and the main control of “necessary” or “unnecessary” of the correction of the distance S is made. Notify Part 11. No correction is made when unnecessary. Therefore, the subsequent recording of the card 1a is performed using the transport time t which is initially set in the transport time setting unit 12.

When the correction of the distance S is "necessary", the correction data calculator 32 of the correction time calculator 31 calculates ΔS as the transport speed calculator 26.
The correction time Δt (= ΔS /
V) is calculated.

Therefore, the recording start time t of the initial setting is read from the carrying time setting unit 12, and the corrected carrying time calculator 33 calculates the corrected carrying time t '= t + Δt by the correction time Δt. The corrected transport time t ′ is updated and set in the transport time setting unit 12 instead of the default transport time t.

Then, the card 1a is sent to the printing unit 6 where the correction value (that is, ΔS) is printed and sent from the issuing port 7. Therefore, the correction mode instruction button 160 is pressed again to cancel the correction mode, and the correction of the recording start position is completed.

When the transport time t'corrected in this way is used, the card 1a is sent to the subsequent recording start position for recording, and the reproducing head 10a reproduces the recorded data to complete the check. Data is printed on the card 1a by the printing unit 6 and sent from the issuing port 7.

Therefore, unlike the conventional correction method, the steps of developing, measuring, and adjusting after recording the data are not required, and the time for developing and measuring and the correction of the recording start position of the card 1a are not required. The work of adjusting the distance between the sensor 8a and the magnetic head 9a can also be omitted.

In the above example, when the difference ΔS is obtained, the allowable value
S_LCompared with, the difference ΔS is the allowable value S _LComplement only when crossing
The correct value was explained, but the allowable value S_LRegardless of the difference Δ
A method of correcting only the transport time Δt corresponding to S may be used.
Yes.

In the above example, the case of magnetically recording on the card 1a having a magnetic stripe has been described, but the same applies to other recording methods, for example, optical or magneto-optical card recording by light or magneto-optical. be able to.

[0060]

As described above, according to the present invention, in claims 1 and 2, when the position at which the recording means starts recording on the recording medium is corrected, recording is performed from the leading end of the conveyed recording medium. First having a predetermined signal period by means
Data is continuously recorded, and at a position conveyed by a predetermined distance from the leading end of the recording medium, the second data having a signal period different from that of the first data is switched and recorded, and the recording medium is recorded by the reproducing means. The total number of signal cycles of the first data from the tip to the position where the first data is switched to the second data is counted by the reproducing means, and the total number of signal cycles is divided by the recording density by the calculating means. To find the distance to the recording start position, find the difference from the preset distance to the recording start position, and divide by the distance corresponding to the difference to correct the distance to the recording start position By setting the above-mentioned position as the recording start position, the recording start position can be automatically corrected without the need for the work steps of development, measurement and adjustment after recording the data as in the conventional method.

According to the third aspect, the recording density is calculated based on the actually measured value, so that the accurate recording density is obtained, and the correction accuracy can be further enhanced. According to the fourth aspect, the recording start position can be corrected within the allowable error range by correcting the distance only when the difference obtained by the calculation means exceeds the preset specified value.

According to a fifth aspect of the present invention, the distance corresponding to the difference obtained by the calculating means is stored in the storage means, and when the recording means records on the recording medium, only the distance read from the storage means to the recording start position. By correcting the distance, it is not necessary to make a mechanical adjustment, and once the correction value is obtained, the automatic correction can be repeatedly performed. There is an effect.

[Brief description of drawings]

FIG. 1 is a principle diagram corresponding to claim 1 of the present invention.

FIG. 2 is a principle diagram corresponding to claim 2 of the present invention.

FIG. 3 is a block diagram showing an embodiment of the present invention.

FIG. 4 is a block diagram showing functions of a main control unit of the embodiment.

FIG. 5 is a time chart of an example.

FIG. 6 is a flowchart of an embodiment.

FIG. 7 is a side sectional view showing the ticket issuing device.

FIG. 8 is an enlarged side view showing the magnetic recording section.

[Figure 9] Illustration of the card

FIG. 10 is an explanatory diagram of a recording start position.

[Explanation of symbols]

1 is a recording medium, 1a is a card, 8
Is a detecting means, 8a is a sensor, 9 is a recording means,
9a is a recording head, 10 is a reproducing means,
10a is a reproducing head, 11 is a main control unit, 12 is a transport time setting unit, 14 is a first counting unit, 15 is a first calculating unit, 15a is a calculating unit, 16 is a correction instructing unit,
17a is a clock generator, 17b is a clock counter,
34 is an allowable value setting section, 40 is a conveying means, 40a is a belt mechanism, 160 is a correction mode instruction button,

Claims (5)

[Claims] 1. A recording means (9) is conveyed from a position where a recording medium (1) is conveyed by a conveying means (40), and a leading end of the recording medium (1) is detected by a detecting means (8) and then conveyed by a predetermined distance. A method for automatically correcting the recording start position of a recording medium of a medium recording device, in which the recorded data is reproduced by the reproducing means (10) and then the recorded data is checked for correctness by the reproducing means (10). The recording means from the tip of the recording medium (1)
First data having a predetermined signal period is continuously recorded by (9), and the first data is conveyed at the predetermined distance after the front end of the recording medium (1) is detected by the detection means (8). The second data having a signal period different from that of the data is switched and recorded, and the recording means (10) reproduces the recording of the recording medium (1),
The first counting means (14) counts the total number of signal periods of the first data from the tip to the position where the first data is switched to the second data, and the first computing means (15). The total number of signal periods is divided by the recording density to obtain the distance to the recording start position, the difference from the preset distance to the recording start position is obtained, and the distance is divided by the distance corresponding to the difference. A method for automatically correcting the recording start position of a recording medium, wherein the recording start position is a position where the recording medium is conveyed by correcting the distance to the recording start position thus obtained. 2. The position of starting the data of the recording medium (1) by the recording means (9) is corrected in advance, and the recording medium (1) conveyed by the conveying means (40) is recorded by the recording means (9). A medium recording device for recording data, checking the correctness of the recorded data by reproducing the recorded data by the reproducing means (10), and correcting the position of starting the recording of the data on the recording medium (1). Correction instruction means (16) for instructing, detection means (8) for detecting the tip of the recording medium (1) conveyed by the conveying means (40), and when recording data on the recording medium (1), The transport means (40)
The leading end of the recording medium (1) conveyed by the detecting means.
When recording is started from the position conveyed by a predetermined distance after (8) is detected and the position at which recording is started on the recording medium (1) is corrected based on the instruction from the correction instruction means (16), A first signal having a predetermined signal period from the end of the recorded recording medium (1)
Recording means (9) for continuously recording data and switching to and recording second data having a signal cycle different from that of the first data at a position conveyed by the predetermined distance from the front end of the recording medium (1). ) And when correcting the position to start recording on the recording medium (1), the first data is transferred to the second data from the tip of the recording medium (1) on which the recording is reproduced by the reproducing means (10). First counting means (13) for counting the total number of signal cycles of the first data up to the position where switching is made to the position, and all signals of the first data counted by the first counting means (14) The number of cycles is divided by the recording density to obtain the distance to the recording start position, the difference from the preset distance to the recording start position is obtained, and the distance corresponding to the difference is divided and obtained. A first calculation means (15) for correcting the distance to the recording start position, and data is recorded on the recording medium (1). When recording, the medium recording apparatus characterized by start recording data is transported to a position corrected by said first calculation means (15). 3. The recording density is counted by the second counting means for all clock signals from the detection means (8) detecting the leading edge of the recording medium (1) to the cancellation of the detection at the trailing edge,
A value obtained by dividing the clock frequency of the clock signal by the second calculating means by the second calculating means is multiplied by the length of the recording medium (1) to obtain a conveying speed, and the recording frequency is divided by the conveying speed. Claim 1 or claim 2 characterized in that
Method for automatically correcting the recording start position of the recording medium or medium recording device. 4. A recording start position obtained by dividing the distance by a distance corresponding to the difference only when the difference obtained by the first calculating means (15) exceeds a preset specified value. 4. The method for automatically correcting the recording start position of the recording medium or the medium recording apparatus according to claim 1, wherein the distance to is corrected. 5. The distance corresponding to the difference obtained by the first calculation means (15) is stored in a storage means, and when the recording means (9) records the distance on a recording medium (1), the division is performed. 5. The recording start position of the recording medium according to claim 1, claim 2, claim 3 or claim 4, wherein the calculated distance to the recording start position is corrected by the distance read from the storage means. Automatic correction method or medium recording device.