JP2000118066A - Printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recorder capable of adequately recording data in a simple structure on recording sheets which are conveyed in parallel. SOLUTION: Each of top ends of at least two recording sheets P1, P2 which are conveyed by a conveying means 25 is detected by detecting means S1A, S1B, respectively. A control means determines one of the recording sheets which firstly reached a recording position based on the detected signals of the detecting means S1A, S1B. A recording means is controlled such that the data is sequentially recorded on the recording sheets by starting from one which firstly reached the recording position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus for recording data input from a personal computer, a word processor, an electronic typewriter, a facsimile apparatus, etc. on a recording sheet, and relates to at least two or more sheets fed in parallel. The present invention relates to a device capable of recording data on a recording sheet.

[0002]

2. Description of the Related Art In recent years, the performance of personal computers has been remarkably improved, and the processing speed has been considerably increased. In addition, the spread of the Internet has been remarkable, and various kinds of information have become easily available.

[0003] In such a situation, it is desired to increase the speed of the recording device as the output device, and there is a problem how to output a large amount of information quickly.

Here, as a conventional recording apparatus, a feeding means for separating and feeding stacked recording sheets one by one,
Some recording apparatuses include a recording unit that forms an image on a fed recording sheet, a conveyance unit that accurately conveys the recording sheet that is being recorded, and a discharge unit that discharges the recorded recording sheet.

[0005] In the recording apparatus having such a configuration, in order to increase the processing speed, the image recording speed of the recording means is increased, and the speed of the conveying means and the discharging means is increased. However, even if the operating speeds are increased in this way, there is a limit to increasing the total processing speed since recording is performed one by one.

Therefore, in order to dramatically improve the total processing speed, there is a printer in which at least two sheets are fed in parallel and recording is performed simultaneously. For example, in the case of a device capable of feeding up to A4 size sheets, if the width of A6 or postcards is less than half, even if two sheets are stacked in parallel, it is possible to cope without changing the device size. Some ideas have been invented.

For example, Japanese Utility Model Registration No. 1602264 proposes a paper feeder capable of feeding two small papers in parallel by one operation, and capable of directly feeding large papers as usual. I have. Also, Japanese Patent Application Laid-Open No. 5-286599
In this publication, a recording apparatus is also described in which two recording sheets are fed in parallel to perform recording.

However, when two sheets are fed in parallel, there are the following problems.

That is, when two sheets are fed in parallel, even if feeding is started at the same time, a delay due to slippage of the feeding means,
There is a case where a difference occurs in arrival at the transport roller due to a difference in timing of rush to the transport roller or the like, and two sheets may not reach the transport roller at the same time. In such a case, if the recording is directly performed on the two fed recording sheets, even if one of the recording positions is appropriate,
The recording position of the other recording sheet is not always an appropriate position.

In order to solve such a problem, Japanese Patent Application Laid-Open No. Hei 5-286599 discloses a method in which a friction clutch is attached to a feeding roller, two sheets are fed at the same time, and a sheet that arrives at a conveying roller with a delay. The feeding roller is rotated until the leading end of the feeding roller contacts the conveying roller. The paper that has reached the transport roller first is held by the friction clutch with the leading end of the paper abutting the transport roller.

[0011] In this manner, by driving the transport roller after the leading edge of the sheet that has arrived at the transport roller with a delay contacts the transport roller, it is possible to align the leading edge positions of the two sheets of paper.

[0012]

However, in such a conventional recording apparatus, when a friction clutch is provided so that the leading ends of two sheets are always aligned and then the two sheets are pushed into the conveying roller, a friction clutch or the like is required. This mechanism is required, which may lead to an increase in the size of the device and an increase in cost.

The present invention has been made in view of such circumstances, and provides a recording apparatus which has a simple structure and can appropriately record data on recording sheets fed in parallel. It is intended for.

[0014]

According to the present invention, at least two recording sheets fed in parallel by the feeding means are conveyed to the recording means by the conveying means, and the data is recorded on the recording sheets by the recording means. Detecting means for respectively detecting the leading edge of each recording sheet fed by the feeding means, and storage means for storing data to be recorded on the at least two recording sheets, respectively. Calculating a shift amount of the leading end position of each of the recording sheets based on a detection signal from the detection unit, and starts recording data stored in the storage unit for each recording sheet according to the calculated shift amount. Control means for controlling the recording means as described above.

Further, according to the present invention, when the control means determines that the recording sheets reach the recording position at the same time based on a detection signal from the detection means, The recording means is controlled so that data recording is started first on a predetermined recording sheet, and then data recording is sequentially started on another recording sheet.

Further, according to the present invention, the control means records data to be recorded on the recording sheet stored in the recording means on a recording sheet which first reaches a recording position,
Next, at a timing according to the shift amount, controlling the recording unit to record data to be recorded on the recording sheet stored in the recording unit on a recording sheet that has reached a recording position with a delay. It is a feature.

Further, according to the present invention, there is provided a recording method in which at least two recording sheets fed in parallel by a feeding means are conveyed to a recording means by a conveying means, and data is recorded on each of the recording sheets by the recording means. An apparatus for detecting a leading end of each of the recording sheets fed by the feeding unit; and a storage unit for storing data corresponding to a shift amount of a leading end position of the at least two recording sheets. Calculating a shift amount of the leading end position of each of the recording sheets based on a detection signal from the detection means, and recording the first recording position of each of the recording sheets in the storage means according to the calculated shift amount. Data from the first data recorded on the sheet to the start of data recording on the recording sheet that has reached the next recording position is stored, and the next recording position is stored. Is characterized in that and a control means for controlling said recording means so as to start recording the data stored in the storage means the recording sheet reaches.

Further, according to the present invention, the detecting means is provided between the feeding means and the conveying means, and comprises a number of detecting sensors corresponding to the number of the recording sheets fed. It is characterized by being.

In the invention, it is preferable that the detecting means comprises a sensor which moves together with the recording means in a direction orthogonal to a recording sheet feeding direction and detects the presence or absence of the recording sheet. It is a feature.

Further, the present invention comprises image reading means, and the detecting means moves the image reading means together with the recording means in a direction orthogonal to the recording sheet feeding direction, and moves the leading end of each recording sheet. It is characterized in that it is configured to detect each.

According to another aspect of the present invention, there is provided a feeding means for feeding at least two recording sheets in parallel, a recording means for performing recording on each of the recording sheets fed in parallel by the feeding means, Detecting means for respectively detecting the leading end of each recording sheet fed in parallel by the feeding means; and the position of the leading end of each recording sheet with respect to each fed recording sheet based on a detection signal from the detecting means. And control means for controlling the recording means so that recording is started from a position corresponding to the recording device.

According to the invention, the leading ends of at least two recording sheets fed by the feeding unit are respectively detected by the detecting unit, and the control unit detects the leading end of each recording sheet based on the detection signal of the detecting unit. The shift amount of the position is calculated, and the recording unit is controlled so as to sequentially start recording data on each recording sheet according to the shift amount.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing the internal configuration of the recording apparatus according to the first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a recording head which is a recording unit. In the present embodiment, an ink jet recording head is used. Reference numeral 2 denotes a carrier for supporting the recording head 1, reference numeral 3 denotes a head lever for detachably supporting the recording head 1 on the carrier 2, and reference numeral 4 denotes a guide for guiding the carrier 2 in an arrow A direction which is a direction orthogonal to the sheet conveying direction. Axis.

Reference numeral 5 denotes a guide rail as another guide member for guiding the carrier 2, and 6 denotes a timing belt stretched between two pulleys (only one pulley 7 is shown in FIG. 1). A part of the timing belt 6 is fixed to the carrier 2. Note that the illustrated pulley 7
Is directly connected to a carrier motor M1. By driving the carrier motor M1, the carrier 2 on which the recording head 1 is mounted can be scanned in the direction of arrow A.

Reference numeral 8 denotes a scale indicating the absolute position of the carrier 2 in the scanning direction. In this embodiment, a black bar printed on a transparent PET film at a required pitch is used. Is fixed to the chassis 9 and the other is supported by a leaf spring (not shown).

Reference numeral 10 denotes a recovery unit for performing an ejection recovery process for the recording head 1. The recovery unit 10 includes a cap 11 and a wiper 12.

Here, the cap 11 is formed of an elastic member such as rubber, and covers the ink discharge nozzle (not shown) in the recording head when the recording head 1 moves and faces the cap 11. It has a shape. further,
The cap 11 is connected to a pump 13 and applies a suction force to a discharge nozzle of the recording head 1 to generate air bubbles,
Dust and ink which has become unsuitable for recording due to thickening are removed.

The wiper 12 is arranged near the cap 11 and wipes ink droplets adhered to the ejection nozzle surface of the recording head 1. The cap 11 and the wiper 12 make it possible to keep the recording head 1 in a normal state.

Reference numeral 14 denotes a conveyance roller driven by a conveyance motor M2 for conveying the recording sheet. Reference numeral 15 denotes a pinch roller for bringing the recording sheet into contact with the conveyance roller 14 by a spring (not shown). It is a pinch roller holder that freely supports.

Reference numeral 17 denotes a conveying roller gear fixed to one end of the conveying roller 14;
The transport roller 14 is driven by the rotation of the transport motor M2 transmitted via the intermediate gear 18 to the transport roller 14.

Reference numeral 19 denotes a discharge roller gear fixed to a discharge roller 20 shown in FIG. 4 for discharging a recording sheet on which an image is formed by the recording head 1 to the outside of the recording apparatus. The discharge roller 20 is driven by the rotation of the transport motor M2 transmitted via the roller. Reference numeral 21 denotes a spur roller that presses the recording sheet against the discharge roller 20 by a spring (not shown), and reference numeral 22 denotes a spur holder that rotatably supports the spur roller 21.

Reference numeral 23 denotes an automatic feeding device for stacking a plurality of recording sheets and separating and feeding one by one. Here, as shown in FIG. 2, the automatic feeding device 23 includes a stacking plate 24 for supporting the stacked recording sheets, and a feeding roller 25 serving as a feeding unit for feeding the recording sheets. And first left and right side guides 2 for regulating the position in the width direction of the recording sheet
6, 27, and at least two small recording sheets, in this embodiment, when two sheets are stacked in parallel, the first left and right side guides 26, 27 and the second left and right side guides regulate the position of the recording sheet in the width direction. Guides 28 and 29 and the first
A separation claw 30 is attached to the left and right side guides 26 and 27 and separates the stacked recording sheets one by one.

The recording sheets stacked on the stacking plate 24 are pressed against the roller portion 25a of the feeding roller 25 by the spring force of the pressing spring 31, as shown in FIG. Also, the first left and right side guides 26, 27
Are supported by the stacking plate 24 so as to be movable in the direction shown by the arrow B in FIG. 2 so that the position in the width direction can be regulated according to the size of the recording sheet.

Further, the second left and right side guides 28, 29
Is mounted on the loading plate 24 so as to be undulating. When the second left and right side guides 28 and 29 are used, the loading plate 2
4 so as to be used substantially vertically.

The second left and right side guides 2
By making the sheets 8 and 29 substantially perpendicular to the stacking plate 24 as shown in FIG. 3, the widthwise positions of the two recording sheets stacked in parallel can be adjusted by the first right side guide 26 and the second right side guide 26. It can be regulated between the side guides 28 and by the first left side guide 27 and the second left side guide 29,
This makes it possible to feed two recording sheets in parallel.

FIG. 4 is a view showing a state in which the recording sheet P is stacked on the stacking plate 24. As shown in FIG. Two sheet sensors S corresponding to the number of fed recording sheets, constituting a detecting means for detecting the leading end of P
1A and S1B are attached.

Here, the sheet sensors S1A, S1B
Are recording sheets P1 and P2 having a small width as shown in FIG.
Are fed in parallel, these recording sheets P1,
It is arranged at a position where the tip position of P2 can be detected.

When a wide recording sheet is fed, only one recording sheet is fed. In this case,
The leading edge position of the recording sheet may be detected using only one of the sheet sensors S1A and S1B.
Further, an intermediate position detected by both of the sheet sensors S1A and S1B may be set as the leading end position of the recording sheet. Further, it is also possible to calculate the amount of skew of the recording sheet, that is, the amount of skew, from the difference between the detection positions of the sheet sensors S1A and S1B.

FIG. 6 is a block diagram showing the configuration of the control system of the printing apparatus.

In the figure, reference numeral 54 denotes an MPU which is a control means for controlling the entire recording apparatus, and the MPU 54 has a timer 55 for managing time for control. The MPU 54 includes sheet sensors S1A and S1B.
The detection signal from is input.

Numeral 57 stores information such as a work area when the control of the MPU 54 is executed and the speed of the carrier 2.
When data is recorded on the recording sheets P1 and P2, the RAM stores data for each recording sheet to be recorded on each recording sheet.

When one of the two recording sheets P1 and P2 precedes and the sheet sensors S1A and S1B detect the leading edge positions of the sheets P1 and P2 at different timings, the MPU 54 sets the respective sheet P1 , P2 is stored in the RAM as difference storage means.
57.

Reference numeral 56 denotes a ROM storing a control program of the MPU 54 and the like, and 58 denotes an EEPROM capable of retaining information even when the power of the recording apparatus is turned off. Reference numeral 59 denotes a print head driver for driving the print head 1 in accordance with desired print information and the like, and reference numeral 60 denotes a carrier motor driver, which drives a carrier motor M1 for scanning the carrier 2.

S2 is an HP sensor for detecting the position of the carrier 2, 61 is a transport motor driver, and the transport roller 1
This is for controlling the drive of the transport motor M2 for driving the zero. Reference numeral 62 denotes a feed motor driver, which drives and controls a feed motor M3 that drives the feed roller 25. S3 is an ASF for detecting the rotation of the feed roller 25.
It is a sensor.

Reference numeral 53 denotes a 1 / F section (interface section) for connecting the recording apparatus to an electronic device 51 such as a host computer. The recording apparatus can exchange information with the host computer or the like via the 1 / F section 53. It is configured. A printer driver 52 performs various settings related to the printing apparatus and instructs the printing apparatus according to the settings.

As described above, detection signals from the sheet sensors S1A and S1B are input to the MPU 54, and when two recording sheets P1 and P2 are fed, for example, the recording sheet P1 Is the recording sheet P
2, the MPU 54 can recognize the leading end positions of the recording sheets P1 and P2 being fed based on the detection signals from the sheet sensors S1A and S1B, and the MPU 54 detects the leading ends of the recording sheets P1 and P2. The difference between the tip positions is stored.

When the recording sheet P1 is leading, the MPU 54 sets the sheet sensors S1A, S1
It is determined that the recording sheet P1 arrives first at the recording head 1 based on the detection signal from the recording head 1B, and when the recording by the recording head 1 is started, the data for two recording sheets stored in the RAM 57 is read out. , The data of the first sheet is recorded on the preceding recording sheet P1.
The next one piece of data is recorded on the second recording sheet P2 at a timing according to the difference stored in the AM 57.

On the other hand, when the two recording sheets P1 and P2 are simultaneously conveyed, the MPU 54
Detection signals are simultaneously input from A and S1B. And
In this case, the MPU 54 determines that the two recording sheets P1 and P2 arrive at the recording head 1 at the same time, and sets the predetermined one recording sheet P1 as the preceding recording sheet P1, and transfers the data of the first one sheet. I try to record it.

Next, a recording operation and a paper discharging operation in the recording apparatus having the above-described configuration will be described with reference to a flowchart of FIG.

For example, as shown in FIG. 5 described above, when a recording command is received in a state where a plurality of recording sheets P1 and P2 having a small width are stacked on the stacking plate 24 of the automatic feeding device 23 (S01), The MPU 54 drives the feed motor M3 via the feed motor driver 62 to drive the feed roller 25 (S02). As a result, the uppermost recording sheets P1 and P2 of the plurality of stacked recording sheets are separated one by one on the left and right sides, and two sheets are fed in parallel in the direction C in the drawing.

Here, for example, when one recording sheet P1 is conveyed ahead of the other recording sheet P2, one of the two sheet sensors S1A and S1B (S1A in the figure) is used as a recording sheet. Detect the tip of P1 (O
N) (Y in S03), and in this case, since the two sheet sensors S1A and S1B do not simultaneously detect (ON) the leading ends of the recording sheets P1 and P2 (N in S11), the position is stored in the RAM 57 as T1. (S04).

Further, the feeding roller 25 is driven (S0
5) When the other sheet sensor S1B detects the leading end of the other recording sheet P2 (Y in S06), the position is set to T2, and the difference is stored in the RAM 57 (S0).
7).

After driving the feeding roller 25 by a predetermined amount from the leading edge position T1 of the recording sheet P1 stored first,
The transport motor M2 is driven via the transport motor driver 61 to start driving the transport roller 14 (S08).

Thus, the preceding recording sheet P1 is conveyed from the stored position of T1 to the recording position. After that, the MPU 54 moves the print head 1 in the scanning direction via the print head driver 59 so that the preceding print sheet P1
Starts recording for one line (S09). further,
After that, a new line is recorded for the next line.

After the line feed and the recording are repeated in this manner, when the second recording sheet P2 reaches the recording position from the stored T2 position, that is, the sheet sensors S1A, S1
When the second recording sheet P2 is transported by the difference between the leading end positions of the recording sheets P1 and P2 detected by 1B,
The second recording sheet P2 together with the preceding recording sheet P1
, One line of recording is started (S10).

By the way, if the recording is continued in this way, the recording on the preceding recording sheet P1 ends first. When the recording on the preceding recording sheet P1 is completed, the MPU 54 drives the discharge roller 20. As a result, the preceding recording sheet P1 is discharged, and thereafter,
The two recording sheets P2 on which recording has been completed are discharged.

On the other hand, when two recording sheets P1 and P2 are simultaneously conveyed and the two sheet sensors S1A and S1B simultaneously detect (ON) the leading ends of the recording sheets (S11).
Y), and the position is stored as T1 (S1).
2). Then, after driving the feeding roller 25 by a predetermined amount, the driving of the transport roller 14 is started (S13).

As a result, the recording sheets P1 and P2 are conveyed from the stored position T1 to the recording position. After this,
The MPU 54 moves the recording head 1 in the scanning direction via the recording head driver 59 to start recording the data of the first sheet as one recording sheet P1 as the preceding recording sheet P1, and starts recording the other recording sheet P2. Then, the recording of the next one sheet of data is started (S14).

After that, when the recording on these two recording sheets P1 and P2 is completed, the MPU 54
The paper discharge roller 20 is driven. Thus, the two recording sheets P1 and P2 are discharged simultaneously.

As described above, when recording by the recording head 1 is started, even if the leading end positions of the recording sheets P1 and P2 are slightly shifted, data is first recorded according to the leading end positions of the recording sheets P1 and P2. The recording sheet to be fed is recorded in a simple structure by recording the first data on the preceding recording sheet P1 and recording the second data on the next recording sheet P2. Data can be appropriately recorded in P1 and P2.

When the leading end positions are the same, the first data is recorded as the preceding recording sheet P1 with the predetermined recording sheet P1 and the second data is recorded on the other recording sheet P2, thereby simplifying the recording. With such a structure, data can be appropriately recorded on the recording sheets P1 and P2 fed in parallel.

In the above-described embodiment, the position of the leading edge of the two recording sheets P1 and P2 fed in parallel is detected by the two sheet sensors S1A and S1B mounted in the recording apparatus. As mentioned,
The present invention is not limited to this. For example, the reflection type sensor is attached to the carrier 2 and is moved together with the recording head 1 in a direction perpendicular to the feeding direction of the recording sheets P1 and P2.
The positions of the leading ends of the two recording sheets P1 and P2 may be detected.

Alternatively, when the recording device has a function as an image reading device, for example, as shown in FIG. 8, an image reading means SC, which is a so-called scanner, capable of reading image data is mounted on the carrier 2. It may be.

While the recording sheet fed from the automatic feeding device 23 is being conveyed by the conveying rollers, the carrier 2 on which the image reading means SC is mounted is moved to the position A in FIG.
The sheet is reciprocated a plurality of times in the direction, and the leading end positions of the two recording sheets P1 and P2 conveyed in parallel are detected.

After that, the recording may be performed on each of the recording sheets P1 and P2 as in the first embodiment described above.

In this configuration, not only the leading edge position of the recording sheet but also the width direction position can be detected in the same manner. Therefore, if the width direction position is corrected and recorded, more accurate recording can be performed. Becomes possible.

Further, in the above description, RA
Although the case where the data for each recording sheet to be recorded on each recording sheet is stored in M57 has been described, the present invention is not limited to this, and the data corresponding to the deviation amount, that is, the recording position is first reached in the RAM 57. The data from the first data recorded on the recording sheet to the start of recording data on the recording sheet that has reached the next recording position is stored, and the data stored in the RAM 57 is stored next. It may be configured to record on a recording sheet that has been set.

With this configuration, the RAM 57 having a small memory capacity can be used, and the cost can be reduced.

[0070]

As described above, according to the present invention, when recording data on recording sheets fed in parallel, data can be recorded sequentially from the preceding recording sheet, so that the leading edge of the recording sheet can be recorded. Even if the position is slightly shifted, data can be appropriately recorded. This makes it possible to provide a high-speed and high-performance recording apparatus with a simple structure.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the internal configuration of a recording apparatus according to a first embodiment of the present invention.

FIG. 2 is a perspective view illustrating a configuration of an automatic feeding device of the recording device.

FIG. 3 is a perspective view showing a state in which two sheets are fed by the automatic feeding device.

FIG. 4 is a main sectional view of the recording apparatus.

FIG. 5 is a top view showing a state where two sheets are being conveyed by the automatic feeding device.

FIG. 6 is a block diagram showing a control system of the printing apparatus.

FIG. 7 is a flowchart illustrating an operation of the recording apparatus.

FIG. 8 is a perspective view showing the internal configuration of a recording apparatus according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Recording head 14 Conveyance roller 20 Ejection roller 23 Automatic feeder 24 Stacking plate 25 Feeding roller 26, 27 1st right and left side guide 27, 29 2nd left and right side guide 54 MPU 57 RAM S1A, S1B Sheet sensor SC Image reading means

Claims (8)

[Claims] 1. A recording apparatus which, after conveying at least two recording sheets fed in parallel by a feeding means to a recording means by a conveying means, records data on each of the recording sheets by the recording means. Detecting means for respectively detecting the leading edge of each recording sheet fed by the feeding means; storage means for storing data to be recorded on the at least two recording sheets; and detecting from the detecting means A control for calculating a deviation amount of the leading end position of each of the recording sheets based on the signal, and controlling the recording unit to start recording data stored in the storage unit for each recording sheet according to the calculated deviation amount. Means, and a recording device. 2. When the control unit determines that the recording sheets reach the recording position at the same time based on a detection signal from the detection unit, the control unit determines a predetermined one of the recording sheets that have reached the recording position at the same time. 2. The recording apparatus according to claim 1, wherein the recording unit is controlled to start recording data on a recording sheet first, and then sequentially start recording data on another recording sheet. 3. The control means records data to be recorded on the recording sheet stored in the recording means on a recording sheet which has reached a recording position first, and then records the data according to the deviation amount. 2. The recording unit according to claim 1, wherein the recording unit controls the recording unit to record data to be recorded on the recording sheet stored in the recording unit on a recording sheet that has reached a recording position with a delay. Recording device. 4. A recording apparatus which, after conveying at least two recording sheets fed in parallel by a feeding means to a recording means by a conveying means, records data on each of the recording sheets by the recording means. Detecting means for respectively detecting the leading edge of each recording sheet fed by the feeding means; storage means for storing data corresponding to the amount of deviation of the leading edge position of the at least two recording sheets; Calculating a shift amount of the leading end position of each of the recording sheets based on a detection signal from the means, and recording the first recording sheet among the respective recording sheets in the storage means according to the calculated shift amount; The data from the first data to be recorded until the start of data recording on the recording sheet that has reached the next recording position is stored, and the data that has reached the next recording position is stored. Control means for controlling the recording means to start recording data stored in the storage means on a recording sheet. 5. The apparatus according to claim 1, wherein said detecting means is provided between said feeding means and said conveying means, and comprises a number of detecting sensors corresponding to the number of recording sheets fed. The recording apparatus according to claim 1, wherein: 6. The recording device according to claim 1, wherein the detection unit moves together with the recording unit in a direction orthogonal to a recording sheet feeding direction and includes a sensor for detecting the presence or absence of the recording sheet. The recording device according to claim 1. 7. An image reading device, wherein the detecting device moves the image reading device together with the recording device in a direction orthogonal to a feeding direction of the recording sheet to detect a leading end of each recording sheet. The recording apparatus according to claim 1, wherein the recording apparatus is configured as described above. 8. A feeding unit for feeding at least two recording sheets in parallel, a recording unit for recording on each of the recording sheets fed in parallel by the feeding unit, and a feeding unit. Detecting means for respectively detecting the leading end of each recording sheet fed in parallel; and, based on a detection signal from the detecting means, for each fed recording sheet, the position of the leading end of each recording sheet is determined. A control unit that controls the recording unit so that recording is started from a position.