JP2002249262A - Medium alignment device and recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of sensors for detecting the completion alignment of mediums to reduce the cost. SOLUTION: In a sheet alignment device 17 for pressing the tip of a sheet against an alignment shutter unit 27 provided protrusively and retreatably provided on a sheet guide to align the sheet, a first alignment shutter 31 having a plurality of alignment teeth 34 and a second alignment shutter 32 having a plurality of alignment teeth 35 are arranged so that the respective alignment teeth are alternately located. A first alignment sensor 36 and a second alignment sensor 37 for detecting the rocking about a support shaft 39 in the first and second alignment shutters are arranged one each in conformation to the first and second alignment shutters, and constituted so as to detect the completion of alignment of the sheet when the alignment teeth of the first alignment shutter and the alignment teeth of the second alignment shutter are pressed against the tip of the sheet and located in substantially in the same position to the carrying direction of the sheet.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medium aligning apparatus for aligning a medium such as a sheet, and a recording apparatus provided with the medium aligning apparatus.

[0002]

2. Description of the Related Art A recording apparatus records an image on a medium (recording medium) while a carriage having a recording head is running. Such a recording apparatus is disclosed in
As disclosed in JP-A-39322 and JP-A-5-9953, there is an apparatus having a medium aligning device for aligning a medium supplied obliquely with respect to a conveying roller for conveying the medium.

[0003] In such a medium alignment device, an alignment shutter is disposed so as to be able to advance and retreat in an alignment path of the medium, and orthogonal to the transport direction of the medium. It aligns the media. A plurality of sensors are provided near the alignment shutter along the longitudinal direction of the alignment shutter. When at least two of these sensors detect the leading end of the medium, the completion of the alignment of the medium is detected. Thereafter, the alignment shutter is retracted from the transport path, and the aligned medium is transported to the recording head position by the transport roller.

[0004]

However, in the above-described conventional medium aligning apparatus, the sensor for detecting the completion of the alignment of the medium accurately detects the completion of the alignment of all the media supplied to the medium aligning apparatus.の of the minimum width of the medium supplied to the medium aligning apparatus.
They must be arranged in the width direction of the transport path at intervals equal to or less than the pitch. For this reason, especially when the width of the transport path is wide, the number of the sensors for detecting the completion of the alignment of the medium increases, and the cost of the medium alignment apparatus and the cost of the recording apparatus increase.

As a means for reducing the number of sensors, a prism or the like is used when the sensor is an optical sensor. However, the number of sensors is limited because the optical path length of the sensor is limited. .

[0006] Further, since the sensor for detecting the completion of the alignment of the medium is disposed on the medium transport path, it is easily affected by dust (eg, paper dust) generated from the medium. For this reason,
Erroneous detection is likely to occur in the sensor, and the reliability of the sensor that detects the completion of the alignment of the medium may be reduced.

SUMMARY OF THE INVENTION An object of the present invention is to provide a medium aligning apparatus and a recording apparatus capable of reducing costs by reducing the number of sensors for detecting completion of alignment of a medium. It is in.

[0008]

According to a first aspect of the present invention, there is provided a medium aligning apparatus for aligning a medium by abutting a leading end of the medium on an alignment shutter provided to be able to advance and retreat on a medium transport path. A plurality of the alignment shutters having a plurality of alignment teeth are arranged so as to alternately position the respective alignment teeth, and a sensor for detecting the operation of these alignment shutters corresponds to each of the alignment shutters. When the alignment teeth of each of the plurality of alignment shutters are abutted against the leading end of the medium and are located at substantially the same position in the transport direction of the medium, completion of alignment of the medium is detected. It is characterized by having been done.

According to a second aspect of the present invention, in the first aspect of the present invention, among the aligning teeth of the different aligning shutters, adjacently positioned aligning teeth simultaneously contact the leading end of the medium having the minimum width. It is characterized by being constituted so that it can do.

According to a third aspect of the present invention, in the first aspect of the present invention, among the alignment teeth of the different alignment shutters, the adjacently positioned alignment teeth are located at arbitrary positions in the width direction of the transport path. It is characterized in that it is configured to be able to simultaneously contact the leading ends of the transported minimum width media.

[0011] The invention according to claim 4 is the invention according to claims 1 to 3.
In the invention described in any one of the above, a plurality of the alignment shutters are arranged so as to be swingable around the same axis.

[0012] The invention according to claim 5 provides the invention according to claims 1 to 4.
In the invention described in any one of the above, the sensor is installed at a position distant from a medium transport path.

According to a sixth aspect of the present invention, a recording head mounted on a carriage records an image on a medium on a transport path, and aligns the medium on the transport path upstream of the recording head. In a recording apparatus provided with a device, the medium alignment device is configured to abut the leading end of a medium against an alignment shutter provided to be able to advance and retreat on the transport path, thereby aligning the medium, and further comprising a plurality of alignment devices. A plurality of the alignment shutters with teeth are arranged so as to alternately position each of the alignment teeth,
Sensors for detecting the operation of these alignment shutters are arranged corresponding to the respective alignment shutters, and the alignment teeth of each of the plurality of alignment shutters are abutted against the leading edge of the medium, and the medium is transported in the transport direction. Is arranged to detect the completion of the alignment of the medium when the positions are substantially the same.

According to a seventh aspect of the present invention, in the medium according to the sixth aspect, the medium aligning device is configured such that, among the aligning teeth in the different aligning shutters, the aligning teeth positioned adjacently have the minimum width. Are arranged so as to be able to simultaneously contact the tips.

According to an eighth aspect of the present invention, in the medium alignment apparatus according to the sixth aspect, among the alignment teeth in the different alignment shutters, the alignment teeth positioned adjacent to each other have a width of the transport path. It is characterized in that it is configured to be able to simultaneously contact the leading ends of the media of the minimum width conveyed to an arbitrary position in the direction.

According to the ninth aspect of the present invention, there is provided the sixth to eighth aspects.
In the invention according to any one of the above, the medium alignment device is characterized in that a plurality of alignment shutters are arranged so as to be swingable around the same axis.

According to a tenth aspect of the present invention, in the invention of any of the sixth to ninth aspects, the sensor in the medium alignment device is installed at a position distant from a medium transport path. Is what you do.

The first, second, third, fourth, sixth, seventh, eighth or ninth invention has the following effects.

Sensors for detecting the operation of a plurality of aligning shutters having a plurality of aligning teeth are arranged corresponding to the respective aligning shutters, and the aligning teeth of the plurality of aligning shutters are provided at the leading end of the medium. It is configured to detect the completion of the alignment of the medium when it is abutted and substantially at the same position in the transport direction of the medium. Minute number is sufficient, and is 1 /
With a pitch of 2, it is not necessary to arrange in the width direction of the medium transport path. Therefore, even if the width of the medium transport path is wide, the number of sensors for detecting the completion of the alignment of the medium can be reduced, and the cost can be reduced.

The invention according to claim 5 or 10 has the following operation.

Since the sensor for detecting the operation of the alignment shutter is provided at a position distant from the medium transport path, the sensor is not affected by dust generated from the medium, for example, paper dust. Detection does not occur, and reliability can be improved.

[0022]

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

FIG. 1 is a schematic sectional side view showing an embodiment of the recording apparatus according to the present invention. 2A and 2B show a medium aligning device of the recording apparatus of FIG. 1, wherein FIG. 2A is a front view and FIG.

The printer 10 shown in FIG. 1 records dots by striking a large number of recording wires of a recording head 13 onto a sheet as a medium via an ink ribbon (both not shown). Is a dot impact printer that records an image including characters on a sheet.

The sheet is a cut sheet or a film cut to a predetermined length, or a copy sheet or a passbook in which a plurality of sheets are overlapped.

The printer body 11 of the above-described printer 10
Are a main body frame 12 (FIG. 2), a recording head 13 and a carriage 14 as a recording mechanism, a platen 15, a sheet guide 16, a first conveyance roller 21, a second conveyance roller 22, 3 transport rollers 23,
The fourth transport roller 24, the fifth transport roller 25, the sixth transport roller 26, and the sheet alignment device 1 as a medium alignment device
7 are provided.

A platen 15 is rotatably supported by the body frame 12, and a sheet guide 16 and a sheet guide 18 (FIG. 3) are fixed to the body frame 12.

The sheet guide 16 is formed on a flat surface, and forms a sheet conveying surface as a medium conveying path for conveying a sheet. The sheet guide 18 is disposed above the sheet guide 16 and guides the conveyance of the sheet together with the sheet guide 16.

The sheet transport mechanism including the platen 15 includes a first transport roller 21 and a second transport roller 22, and a third transport roller 23 and a fourth transport roller 24 disposed on the front side of the printer body 11 with respect to the platen 15. , A fifth transport roller 25 and a sixth transport roller 26 are arranged on the rear side of the printer main body 11 with respect to the platen 15. These first transport roller 21 and second transport roller 2
2, a third transport roller 23 and a fourth transport roller 24 are arranged vertically, and a fifth transport roller 25 and a sixth transport roller 26 are arranged vertically to form a pair.

The first transport roller 21, the third transport roller 23, and the fifth transport roller 25 are disposed below the sheet guide 16 together with the platen 15, and the second transport roller 22, the fourth transport roller 24, and the The six transport rollers 26
It is arranged above the sheet guide 16. The upper portions of the platen 15, the first transport roller 21, the third transport roller 23, and the fifth transport roller 25 project above the sheet guide 16.

A pair of a first transport roller 21 and a second transport roller 22, a third transport roller 23 and a fourth transport roller 24,
One of the fifth transport roller 25 and the sixth transport roller 26 may be a drive roller, and the other may be a driven roller that rotates in contact with the drive roller, or both may be drive rollers. You may. Further, the pair of the first transport roller 21 and the second transport roller 22, the third transport roller 23 and the fourth transport roller 24, the fifth transport roller 25 and the sixth transport roller 26 are formed at the same speed in the same direction. The sheet can be conveyed.

As shown in FIG. 1, the sheet is automatically or manually fed from the front side of the printer main body 11, and is then paired with a first transport roller 21, a second transport roller 22, and a third transport roller. The roller 23 and the fourth transport roller 24, and the fifth transport roller 25 and the sixth transport roller 26 are respectively nipped and transported, and transported from the front to the rear of the printer main body 11 in the arrow A direction.
From the rear to the front in the direction of arrow B. Thus, the sheet is conveyed between the recording head 13 and the platen 15 in a sub-scanning direction orthogonal to a main scanning direction of the carriage 14 described later.

The carriage 14 is mounted on the main body frame 12.
The recording head 13 is mounted while being slidably inserted through a carriage shaft 19 fixed to the recording head 13. The carriage shaft 19 is provided with a platen 15, a first transport roller 21, a second transport roller 22, a third transport roller 23, and a fourth transport roller 2.
4, the carriage 14 is disposed in parallel with the fifth transport roller 25 and the sixth transport roller 26, and therefore, the carriage 14 is moved in the main scanning direction which coincides with the axial direction of the carriage shaft 19, the platen 15, the first transport roller 21, and the like. Is run (scanned).

The recording head 13 has a large number of recording wires (not shown), and while traveling in the main scanning direction by the carriage 14, makes the recording wires protrude and strikes an ink ribbon (not shown). Remove the ink from the ink ribbon
An image including characters is recorded on the sheet on the sheet guide 16 conveyed between the platen 15 and the recording head 13.

The recording operation by the recording head 13 is such that one line of recording is performed by the recording wire of the recording head 13 while the carriage 14 is traveling leftward or rightward in the main scanning direction. The platen 15, the first transport roller 21, the second transport roller 22, the third
The conveyance roller 23, the fourth conveyance roller 24, the fifth conveyance roller 25, and the sixth conveyance roller 26 convey the sheet by a predetermined length (normal line spacing), and the operation is repeated.

When a sheet is manually supplied to the printer 10, the leading edge of the sheet is fed by the platen 15, the first transport roller 21, the second transport roller 22, the third transport roller 23, the fourth transport roller 24, and the fourth transport roller 24. In some cases, the paper is supplied obliquely to the fifth transport roller 25 and the sixth transport roller 26. When the recording head 13 performs a recording operation on this sheet in a state where the sheet is supplied obliquely, an image recorded on the sheet is skewed. The sheet aligning device 17 aligns the sheets supplied obliquely as described above.

The sheet aligning device 17 includes an aligning shutter unit 27 and a pair of the first shutters for moving a sheet toward the aligning shutter unit 27 and allowing the leading end of the sheet to abut against the aligning shutter unit 27. It has a transport roller 21 and a second transport roller 22.

First transport roller 21 and second transport roller 2
Reference numeral 2 functions as a conveying roller for conveying the sheet as described above, and also functions as an alignment roller for aligning the sheet. The first transport roller 21 and the second transport roller 22 move in the transport direction of the sheet toward the recording head 13 (the direction of arrow A).
When the sheet detection sensor 28 installed upstream of the first and second transport rollers 22 detects the leading edge of the sheet, it functions as an alignment roller.

The above-mentioned alignment shutter unit 27 is similar to that shown in FIG.
3, an upstream side of the recording head 13 in the sheet conveyance direction (the direction of the arrow A) toward the recording head 13,
That is, the pair is disposed between the pair of the third transport roller 23 and the fourth transport roller 24 and the pair of the first transport roller 21 and the second transport roller 22. Further, the alignment shutter unit 27 extends as shown in FIG. 2 in a direction (main scanning direction) orthogonal to the transport direction (sub-scanning direction) of the recording head 13 shown by arrows A and B, as shown in FIG. 29
Is configured to be able to advance and retreat with respect to the sheet guide 16.
That is, the alignment shutter unit 27 is
, The alignment teeth 33 of the alignment shutter unit 27,
34 and 35 (described later) are configured to protrude above the sheet guide 16 and advance, or retract to a position below the sheet guide 16 or flush with the sheet guide 16.

As shown in FIG. 7, the alignment shutter unit 27 has a configuration frame 30 having a plurality of alignment teeth 33 at the upper end and having a substantially U-shaped cross section, as shown in FIG.
A flat plate-shaped first alignment shutter 31 having a plurality of alignment teeth 34 at an upper end portion, and a substantially plate-shaped second alignment shutter 32 having a plurality of alignment teeth 35 at an upper end portion, as shown in FIG. And a first alignment sensor 36 and a second alignment sensor 37 shown in FIG.

As shown in FIGS. 2 and 7, a support shaft 39 extending in the longitudinal direction of the alignment shutter unit 27 is rotatably supported on both side surfaces 38 of the component frame 30.
The support shaft 39 is loosely fitted in a vertically extending guide groove 40 shown in FIG. As shown in FIG. 7A, both side pieces 41 of the first alignment shutter 31 and both side pieces 42 of the second alignment shutter 32 are rotatably supported by the support shaft 39, and these The first alignment shutter 31 and the second alignment shutter 32 of FIG.
It is configured to be swingable in the direction.

First alignment shutter 31 and component frame 3
As shown in FIG. 5B, a tension coil spring 43 is interposed between the first alignment shutter 31 and the flag piece 47 of the first alignment shutter 31 that can swing around the support shaft 39.
Held close to zero. Similarly, a tension coil spring 44 is interposed between the second alignment shutter 32 and the component frame 30 as shown in FIG. Is held close to the component frame 30.

As shown in FIG. 7A, a plurality of (for example, four) alignment teeth 34 of the first alignment shutter 31 and a second
Plural (for example, three) alignment teeth 3 of the alignment shutter 32
5, the first alignment shutter 31 and the second alignment shutter 32 are alternately positioned in the longitudinal direction of the alignment shutter unit 27 in a state where the first alignment shutter 31 and the second alignment shutter 32 are pivotally supported by the component frame 30 via the support shaft 39. Among the alignment teeth 34 of the first alignment shutter 31 and the alignment teeth 35 of the second alignment shutter 32, the interval between the alignment teeth 34 and the alignment teeth 35 positioned adjacent to each other is supplied to the sheet alignment device 17 of the printer 10. ,
Among the sheets conveyed to an arbitrary position in the width direction of the sheet guide 16 as the conveyance path, when the sheet having the minimum width is conveyed by the first conveyance roller 21 and the second conveyance roller 22 as the alignment rollers, the leading end thereof Are set to dimensions that can be abutted at the same time.

The alignment teeth 34 of the first alignment shutter 31 and the alignment teeth 35 of the second alignment shutter 32
Are the first alignment shutter 31 and the second alignment shutter 3
When the assembly 2 is assembled to the component frame 30, it is not superimposed on the alignment teeth 33 of the component frame 30, and is located at a position different from the alignment teeth 33 along the longitudinal direction of the sheet aligning device 17.

The first alignment sensor 36 detects the swing of the first alignment shutter 31 around the support shaft 39 as shown in FIG. It is installed individually. The second alignment sensor 37 detects the swing of the second alignment shutter 32 around the support shaft 39 as shown in FIG. 6, and one of the second alignment sensor 37 is installed on the component frame 30 corresponding to the second alignment shutter 32. Is done. These first alignment sensor 36 and second alignment sensor 37
The sheet is separated from the sheet guide 16 on which the sheet is conveyed, and is installed below the component frame 30.

First alignment sensor 36 and second alignment sensor 3
7, a light emitting unit 45 and a light receiving unit 46 are provided integrally,
For example, it is an optical sensor such as a photo interrupter. Although the first transport roller 21 and the second transport roller 22 shown in FIG. 2 function as an alignment roller, when the sheets are not yet aligned, as shown in FIG. Because it is pulled by 43,
The flag piece 47 of the first alignment shutter 31 blocks the light emitting unit 45 and the light receiving unit 46 of the first alignment sensor 36, and FIG.
Since the second alignment shutter 32 is pulled by the extension coil spring 44, as shown in FIG.
Flag piece 48 blocks the light emitting unit 45 and the light receiving unit 46 of the second alignment sensor 37.

On the other hand, the first transport roller 2 shown in FIG.
The first and second transport rollers 22 function as alignment rollers, and the alignment teeth 34 of the first alignment shutter 31 and the alignment teeth 35 of the second alignment shutter 32 abut against the leading edge of the sheet, and the first alignment shutter 31 is pulled. The second aligning shutter 32 swings against the tensile force of the coil spring 43, and the second aligning shutter 32 swings against the tensile force of the tensile coil spring 44, so that the alignment teeth 34 and the second When the alignment teeth 35 of the alignment shutter 32 are substantially at the same position as the alignment teeth 33 of the component frame 30 in the sheet conveyance direction, the alignment of the sheet is completed. At this time, the flag piece 47 of the first alignment shutter 31 separates from the light emitting unit 45 and the light receiving unit 46 of the first alignment sensor 36, and the light emitting unit 4
5 and the light receiving portion 46, light is passed between the light emitting portion 45 and the light receiving portion 46 of the second alignment sensor 37.
Light is passed between the light receiving section 5 and the light receiving section 46. In this manner, the completion of the sheet alignment is detected by the first alignment sensor 36 and the second alignment sensor 37.

First alignment sensor 36 and second alignment sensor 3
7, when the sheet alignment is completed, the lifting mechanism 2
9, the alignment shutter unit 27 retreats with respect to the sheet guide 16, and the alignment shutter unit 27
Are positioned below the sheet guide 16,
Alternatively, it is positioned at the same position as the sheet guide 16.

As shown in FIGS. 2 and 4, the lifting mechanism 29 includes a lifting motor 49, a gear train 50, an eccentric cam 5 and the like.
1, a pin 52 and a suspension coil spring 53 for raising and lowering the alignment shutter unit 27.

The elevating motor 49 is installed on the main body frame 12 (for example, a side frame) of the printer 10, and the motor pinion 54 is fixed to the motor shaft so as to rotate integrally therewith.

The gear train 50 includes gears 55, 56 and 57 that mesh with each other. These gears 5
5, 56 and 57 are rotatably disposed on the main body frame 12. The gear 55 among these is the motor pinion 5
Engage with 4. The gears 56 and 57 are provided so as to rotate integrally with each other, and are rotatably supported by one of the left and right pins 52 implanted in the main body frame 12.

The gear 57 of the gear train 50 is
At the same time, it engages with one of the left and right eccentric gears 58 fixed to the support shaft 39 integrally with the support shaft 39. Further, the component frame 30 is suspended on the main body frame 12 of the printer 10 by the left and right suspension coil springs 53, and the left and right eccentric cams 51 are constantly pressed by the left and right pins 52, respectively.

Therefore, by driving the elevating motor 49, power is transmitted to the motor pinion 54, the gear train 50, and the eccentric gear 58, and the eccentric cam 51 rotates.
1 and the pin 52, the support shaft 39 is guided in the guide groove 40, and the alignment shutter unit 27 is
It moves up and down with respect to the sheet guide 16 of 0. Thereby, the alignment teeth 33, 34 and 35 of the alignment shutter unit 27 advance and retreat with respect to the sheet guide 16.

With the configuration described above, the following effects are obtained according to the above embodiment.

In the alignment shutter unit 27,
A first alignment sensor 36 for detecting the swing of the first alignment shutter 31 having a plurality of alignment teeth 34, and a second alignment for detecting the swing of the second alignment shutter 32 having a plurality of alignment teeth 35. Each of the sensors 37 is a first alignment shutter 3
1. While being arranged corresponding to the second alignment shutter 32, the alignment teeth 34 of the first alignment shutter 31 and the alignment teeth 35 of the second alignment shutter 32 abut against the leading edge of the sheet, and the sheet is conveyed. Configuration frame 30 for direction
When it is almost at the same position as the alignment teeth 33, the completion of the alignment of the sheet is detected. Therefore, the sensor for detecting the completion of sheet alignment is the first alignment shutter 3.
1, the number of the second alignment shutters 32 (that is, 2
) Is sufficient, and it is not necessary to arrange them in the width direction of the medium transport path at a pitch of の of the width direction size of the minimum width medium as in the related art. For this reason, even if the width of the sheet guide 16 is wide, the first alignment for detecting the completion of the alignment of the sheet, so that the sheet can be manually fed to an arbitrary position in the width direction of the sheet guide 16 as the medium transport path. The cost can be reduced by reducing the number of the sensors 36 and the second alignment sensors 37.

In the alignment shutter unit 27,
Since the first alignment sensor 36 and the second alignment sensor 37 for detecting the swing of the first alignment shutter 31 and the second alignment shutter 32, respectively, are installed at positions away from the sheet guide 16 as a medium transport path. Since the first alignment sensor 36 and the second alignment sensor 37 are not affected by dust generated from the sheet, for example, paper dust, erroneous detection does not occur and reliability can be improved.

In the alignment shutter unit 27,
Since the first alignment sensor 36 and the second alignment sensor 37 for detecting the completion of the alignment of the sheet are installed at positions away from the sheet guide 16, each of the first alignment sensor 36 and the second alignment sensor 37 is used. Since the first alignment sensor 36 and the second alignment sensor 37 can be arranged upside down and each of the first alignment sensor 36 and the second alignment sensor 37 can be covered with a cover, the degree of freedom in the arrangement of the first alignment sensor 36 and the second alignment sensor 37 is increased. be able to.

In the alignment shutter unit 27,
First alignment sensor 36 for detecting completion of sheet alignment, second alignment sensor 36
Since the alignment sensor 37 detects the flag piece 47 of the first alignment shutter 31 and the flag piece 48 of the second alignment shutter 32, respectively, and does not directly detect the sheet, the first alignment sensor 36, which is an optical sensor, Since the second alignment sensor 37 is not affected by the color and thickness of the sheet, stable detection accuracy can be ensured.

Although the present invention has been described based on the above embodiment, the present invention is not limited to this.

For example, in the above embodiment, the case where the number of the alignment shutters having the alignment teeth is two (for example, the first alignment shutter 31 and the second alignment shutter 32) has been described.
These alignment shutters may be three or more.

In the above embodiment, the printer 10
Described the case of a dot impact printer, but other printers such as an ink jet printer and a page printer may be used.

[0062]

According to the medium alignment apparatus according to the first aspect of the present invention, the number of sensors for detecting the completion of the alignment of the medium can be reduced to reduce the cost.

According to the recording apparatus of the present invention, the number of sensors of the medium alignment device for detecting the completion of the alignment of the medium can be reduced to reduce the cost.

[Brief description of the drawings]

FIG. 1 is a schematic side sectional view showing an embodiment of a recording apparatus according to the present invention.

FIG. 2 shows a medium alignment device of the recording device of FIG.
Is a front view, and (B) is a plan view.

FIG. 3 is a view taken in the direction of the arrow III in FIG.

FIG. 4 is a view as viewed from an arrow IV in FIG. 2 (A).

5A and 5B show a first alignment shutter and the like in FIG. 2, wherein FIG. 5A is a front view and FIG. 5B is a view taken in the direction of arrow V in FIG. 5A.

6A and 6B show a second alignment shutter and the like in FIG. 2, wherein FIG. 6A is a front view and FIG. 6B is a view taken in the direction of arrow VI in FIG. 6A.

7 shows a state in which the first alignment shutter of FIG. 5 and the second alignment shutter of FIG. 6 are assembled, and FIG. 7A is a front view,
(B) is a view on arrow VII of FIG. 7 (A).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Printer (recording apparatus) 13 Recording head 14 Carriage 16 Sheet guide (medium conveyance path) 17 Sheet alignment apparatus (medium alignment apparatus) 21 1st conveyance roller 22 2nd conveyance roller 27 Alignment shutter unit 29 Elevating mechanism 30 Construction frame 31 Section 1 alignment shutter 32 second alignment shutter 34 alignment teeth of first alignment shutter 35 alignment teeth of second alignment shutter 36 first alignment sensor 37 second alignment sensor 39 support shaft

Claims (10)

[Claims] 1. A medium aligning apparatus for aligning a medium by abutting a leading end of the medium on an aligning shutter provided to be able to advance and retreat on a medium transport path. The shutters are arranged so as to alternately position the respective alignment teeth. Sensors for detecting the operation of these alignment shutters are arranged corresponding to the respective alignment shutters, and the sensors of the plurality of alignment shutters are arranged. A medium alignment device configured to detect completion of alignment of a medium when the alignment teeth are abutted against the leading end of the medium and are substantially at the same position in the transport direction of the medium. 2. The apparatus according to claim 1, wherein, among the aligning teeth of the different aligning shutters, adjacently positioned aligning teeth are configured to be able to simultaneously contact the leading edge of a medium having a minimum width. Media alignment device. 3. The alignment teeth positioned adjacent to each other among the alignment teeth in the different alignment shutters are configured to be able to simultaneously contact the leading end of the medium having the minimum width conveyed to an arbitrary position in the width direction of the conveyance path. 2. The medium aligning apparatus according to claim 1, wherein: 4. The apparatus according to claim 1, wherein the plurality of alignment shutters are arranged so as to be swingable about the same axis.
4. The medium alignment device according to any one of claims 1 to 3. 5. The medium alignment apparatus according to claim 1, wherein the sensor is installed at a position distant from a medium transport path. 6. A recording head mounted on a carriage,
A recording apparatus that records an image on a medium on a transport path and includes a medium aligning apparatus that aligns a medium on the upstream side of the recording head in the transport path, wherein the medium aligning apparatus is capable of moving back and forth on the transport path. The medium is aligned by contacting the leading end of the medium with a provided alignment shutter, and the plurality of alignment shutters having a plurality of alignment teeth alternately position the alignment teeth. The sensors for detecting the operation of these alignment shutters are arranged corresponding to the respective alignment shutters, and the alignment teeth of the plurality of alignment shutters are abutted against the leading end of the medium, A recording apparatus configured to detect completion of alignment of a medium when the medium is substantially at the same position in the transport direction of the medium. 7. The medium aligning device according to claim 1, wherein, among the aligning teeth of the different aligning shutters, adjacently positioned aligning teeth can simultaneously contact the leading end of the medium having the smallest width. The recording device according to claim 6. 8. The medium aligning device according to claim 1, wherein, among the aligning teeth of the different aligning shutters, adjacently positioned aligning teeth are simultaneously placed on the leading end of the medium having the smallest width conveyed to an arbitrary position in the width direction of the conveying path. The recording device according to claim 6, wherein the recording device is configured to be able to contact. 9. The recording apparatus according to claim 6, wherein in the medium alignment device, a plurality of alignment shutters are arranged so as to be swingable around the same axis. 10. The sensor in the medium alignment device,
The recording apparatus according to any one of claims 6 to 9, wherein the recording apparatus is installed at a position distant from a medium transport path.