JP2005008324A - Medium conveying device and recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a medium conveying device capable of accurately setting a medium in a short time, and a recording device having the medium conveying device. <P>SOLUTION: The medium conveying device comprises a plurality of detecting means 201, 202 and 203 that are disposed in the conveying direction of the medium and detect a conveyance position of the medium stopped in an arranged position, a calculating means 204 for determining a specific conveyance error based on a detection signal from the detecting means, and displaying means 205 and 170 for displaying a specific correcting command based on a calculation signal from the calculating means. A user can instantly accurately change position and direction of the medium, so that the setting of the medium can be finished by single working. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a medium conveying apparatus for conveying a medium and a recording apparatus including the medium conveying apparatus.
[0002]
[Prior art]
A printer, which is one of recording apparatuses, includes a unit that detects and responds to a setting position error of, for example, a recording sheet that is a recording medium. This means detects the width of the recording paper with a sensor, detects errors such as the recording paper insertion position deviation and insertion tilt based on the detection signal, and if an error is detected, the recording paper is discharged and the error is detected. A warning is given by display or sound (see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-8-25728 [0004]
[Problems to be solved by the invention]
Since the printer described above discharges the recording paper when it detects a recording paper setting position error, it detects specific numerical values such as an insertion position shift and an insertion inclination that are recording paper setting position errors. However, it merely detects the presence or absence of these and warns with a display or sound. Therefore, the user has to repeat the operation of appropriately changing the position and direction of the recording paper until it is received by the printer without knowing how to correct the recording paper.
[0005]
The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a medium conveying apparatus capable of setting a medium with high accuracy in a short time and a recording apparatus including the medium conveying apparatus. There is to do.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the medium conveying apparatus of the present invention is a medium conveying apparatus for conveying a medium, wherein a plurality of medium conveying positions arranged in the medium conveying direction and stopped at the arrangement position are set. And a detection means for detecting, a calculation means for obtaining a specific transport error by a detection signal from the detection means, and a display means for displaying a specific correction command by the calculation signal from the calculation means. It is said. Accordingly, the user can immediately and accurately perform the operation of changing the position and direction of the medium, so that the setting of the medium can be completed in one operation.
[0007]
Further, the detection means is arranged to be able to detect a plurality of conveyance positions on one side edge of the medium. As a result, the medium transport error can be accurately obtained by simply performing a simple arithmetic process on each detection signal. Further, the calculation means calculates a difference between a normal conveyance position and a detection conveyance position of the medium, and calculates a conveyance deviation and a conveyance curve of the medium based on the difference. As a result, the user can recognize a specific medium correction method. Further, the display means displays a message including a direction and a numerical value of the transport error of the medium. As a result, the user can reliably recognize how much the position and direction of the medium should be corrected.
[0008]
In order to achieve the above object, the recording apparatus of the present invention is a recording apparatus that sends out, records, and discharges a recording medium, and is characterized by including each of the above-described medium transport devices. Thereby, it is possible to provide a recording apparatus that exhibits the operation of each of the medium conveying apparatuses.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective view illustrating a configuration example of an ink jet printer that is one of recording apparatuses to which a medium conveying device according to an embodiment of the present invention is applied, and FIG. 2 is a main part of the ink jet printer. FIG. 3 is a cross-sectional view showing an example of the internal configuration. The ink jet printer 100 shown in FIGS. 1 to 3 is a large-sized printer capable of recording on a roll paper having a relatively large paper width, such as a JIS standard A1 size or a JIS standard B1 size. In the ink jet printer 100, a recording unit 120, a paper discharge unit 130, and a medium transport device 200 according to the present embodiment are disposed in a main body 110, and a paper feeding unit 150 is interposed between legs 140 that support the main body 110. Is arranged.
[0010]
As shown in FIGS. 1 to 3, the main body 110 includes a housing 111 made of plastic or sheet metal that covers the recording unit 120 and the paper discharge unit 130. As shown in FIGS. 1 to 3, the housing 111 is provided with an upper lid 112 and a front lid 113 made of translucent or transparent plastic or sheet metal so that the upper surface and the front surface can be opened.
[0011]
As shown in FIGS. 1 to 3, the upper portion of the upper lid 112 is rotatably supported, and the upper lid 112 is opened and closed when the user holds the front portion and pushes it up or down. Since the user can open the upper part of the recording unit 120 and the paper discharge unit 130 by opening the upper lid 112, the maintenance work of the recording head 121, the carriage 122, etc., the correction work of the roll paper set position error, and the recording It is possible to easily perform operations such as removing a paper conveyance error such as a paper jam during or during paper discharge.
[0012]
As shown in FIGS. 1 to 3, the lower part of the front lid 113 is rotatably supported, and is opened and closed when the user holds down the upper part or pushes it up or pushes it up. By opening the front lid 113, the user can largely open the lower part of the recording unit 120 and the paper discharge unit 130, so that it is possible to easily perform a paper transport error canceling operation such as a paper jam during paper feeding. it can.
[0013]
As shown in FIGS. 1 and 2, an ink cartridge holder 160 having a holder main body 161 for storing and holding the ink cartridges 10 for each color and a cover 162 for covering the front surface of the main body 110 as viewed from the front side. Is arranged. The lower portion of the cover 162 is supported so as to be rotatable with respect to the holder main body 161, and is opened and closed when the user holds down the upper portion and pushes it down or pushes it up. Since the user can open the holder main body 161 by opening the cover 162, the user can easily replace the ink cartridge 10 or the like.
[0014]
Further, as shown in FIG. 1 and FIG. 2, a book for the user to perform operations such as recording control and confirm the correction contents of the roll paper set position error, as shown in FIGS. An operation panel (display means) 170 constituting the medium transport apparatus 200 according to the embodiment is disposed. The operation panel 170 is provided with a liquid crystal screen and various buttons so that the user can operate the buttons and correct a roll paper set position error while checking the liquid crystal screen. Since the user can perform reliable operations and operations by visual recognition, it is possible to eliminate operation errors, operation errors, and the like.
[0015]
As shown in FIGS. 2 and 3, the recording unit 120 includes a carriage 122 on which the recording head 121 is mounted, a flexible flat cable (hereinafter, referred to as a flexible flat cable that electrically connects the recording head 121 and the recording execution unit in the control unit 180. FFC 123), an ink tube 124 that connects the recording head 121 and the ink cartridge 10 containing the ink, a paper feed roller 125 that conveys the roll paper and its driven roller 126, and a paper suction means (not shown) that prevents the roll paper from being lifted Etc.
[0016]
The recording head 121 includes a black ink recording head that discharges black ink and a plurality of color ink recording heads that discharge ink of each color such as dark yellow, yellow, light cyan, cyan, light magenta, and magenta. . The recording head 121 is provided with a pressure generation chamber and a nozzle opening connected to the pressure generation chamber. The size of the recording head 121 is controlled from the nozzle opening toward the roll paper by storing ink in the pressure generation chamber and pressurizing it with a predetermined pressure. Ink droplets are discharged.
[0017]
As shown in FIG. 2, the carriage 122 is mounted on a rail 127 provided in the main scanning direction via a bearing and connected to the carriage belt 128, and the carriage belt 128 is operated by a carriage driving device (not shown). Then, it is accompanied by the movement of the carriage belt 128 and is guided by the rail 127 so as to reciprocate. The FFC 123 has one end connected to the connector of the control unit 180 and the other end connected to the connector of the recording head 121, and sends a recording signal from the control unit 180 to the recording head 121. Note that first and second paper position detection sensors (detection means) 201 and 202 constituting the medium conveyance device 200 according to the present embodiment are disposed on the upstream side and the downstream side of the carriage 122.
[0018]
The ink tubes 124 are provided for the inks of the respective colors, and one end of each ink tube is connected to the corresponding ink cartridge 10 via an ink pressure supply unit (not shown), and the other end is recorded for each corresponding color. It is connected to the head 121. The ink tube 124 is configured to send ink of each color pressurized by the ink pressure supply means from the ink cartridge 10 to the recording head 121.
[0019]
The paper feed roller 125 is driven to rotate forward and backward by a driving force transmitted from a motor (not shown). The driven roller 126 is pressed against the paper feed roller 125 by an urging member such as a spring, and rotates forward and backward following the forward / reverse rotation drive of the paper feed roller 125. The paper feed roller 125 and its driven roller 126 sandwich and feed the fed roll paper.
[0020]
As shown in FIGS. 2 and 3, the paper discharge unit 130 includes a paper discharge roller 131 that conveys and discharges roll paper in the sub-scanning direction, a driven roller 132, a cutter 133 that cuts the recorded roll paper, and the like. It has. The paper discharge roller 131 is driven to rotate forward and backward by a driving force transmitted from the motor via the paper feed roller 125. The driven roller 132 is pressed against the paper discharge roller 131 by an urging member such as a spring, and rotates forward and backward following the forward / reverse rotation drive of the paper discharge roller 131. The paper discharge roller 131 and the driven roller 132 sandwich and feed the conveyed roll paper. As shown in FIG. 3, the cutter 133 is arranged to be movable in the vertical direction and the main scanning direction with the blade edge facing downward.
[0021]
As shown in FIG. 3, the medium transport apparatus 200 includes a paper feed roller 125 and its driven roller 126, a paper discharge roller 131 and its driven roller 132, a feed roller 152 and a pinch roller 153, In addition to the guide 157 (see FIG. 9) and the like, the first and second paper position detection sensors (detecting means) 201 and 202 for detecting the roll paper conveyance position and the operation for displaying the correction contents of the roll paper set position error A panel (display means) 170 and a control unit (detection means, calculation means, display means) 180 for transmitting and receiving signals between them are provided. The control unit 180 is a part that controls the entire inkjet printer 100, and a part of the control unit 180 is used to transmit and receive the signal. Details of the medium transport apparatus 200 having such a configuration will be described below with reference to FIG.
[0022]
FIG. 4 is a diagram illustrating details of the medium transport apparatus 200. The first and second paper position detection sensors 201 and 202 are, for example, sensors that use light, magnetism, capacitance, springs, and the like, and are on one side edge side of the roll paper R and have a predetermined interval in the conveyance direction of the roll paper R. It is arranged open. The first and second paper position detection sensors 201 and 202 are configured to detect the transport position of one side edge of the leading end of the roll paper R stopped at a detectable position. In this example, two sensors are provided, but a plurality of three or more sensors may be provided.
[0023]
The control unit 180 includes a detection signal input unit (detection unit) 203 connected to the first and second paper position detection sensors 201 and 202, a calculation unit (calculation unit) 204 connected to the detection signal input unit 203, and A display control unit (display unit) 205 connected to the calculation unit 204 and further connected to the operation panel 170 is provided. The detection signal input unit 203 obtains a conveyance position from the detection signals input from the first and second paper position detection sensors 201 and 202 and sends it to the calculation unit 204 as a detection conveyance position.
[0024]
The calculation unit 204 stores in advance the normal transport positions in the first and second paper position detection sensors 201 and 202 when the roll paper R has been transported with high accuracy. Then, the difference between the normal conveyance position and the detection conveyance position input from the detection signal input unit 203 is calculated, and the conveyance deviation and the conveyance bending, which are conveyance errors of the roll paper R, are calculated based on each difference. . The display control unit 205 displays on the liquid crystal screen 170a of the operation panel 170 a message including the direction and numerical value of the conveyance deviation and the conveyance bending, which are correction commands, based on the conveyance error input from the calculation unit 204. The user can recognize a specific correction method of the roll paper R by looking at a specific message displayed on the operation panel 170, so that an operation of changing the position and direction of the roll paper R can be immediately performed. Can be done accurately. Note that a voice generation unit may be provided on the operation panel 170 so that the message is transmitted to the user by voice.
[0025]
As shown in FIGS. 1 and 2, the leg portion 140 includes two support pillars 142 each having a moving roller 141. And the main-body part 110 is mounted on the upper part of the support pillar 142, and is fixed with a screw. Since the moving roller 141 is disposed on the support column 142, the heavy main body 110 can be smoothly moved to a desired position and installed.
[0026]
As shown in FIGS. 1 and 3, the sheet feeding unit 150 is disposed below the main body unit 110 and between the leg units 140, and includes a pair of support units 151 that support both ends of the roll paper, and a roll A feed roller 152 and a pinch roller 153 for feeding paper are provided. Further, a support portion 151 is fixed, and a pair of arm portions 154 are provided on which both ends of the feed roller 152 and the pinch roller 153 are pivotally supported. Details of the sheet feeding unit 150 having such a configuration will be described below with reference to FIG.
[0027]
FIG. 5 is a perspective view showing details of the paper feeding unit 150. The pair of support portions 151 are fixedly attached to the facing surfaces of the pair of arm portions 154 arranged to face each other. The pair of support portions 151 have a built-in bearing, and are pivotally supported at both ends of a spindle 155 that is inserted in the inner peripheral portion of the roll paper R shown in FIG. It is like that.
[0028]
That is, the spindle 155 has a roll paper R fitted in the center, a pair of flange-shaped roll paper pressers 156 are fitted on both sides of the roll paper R, and spanned between the pair of support portions 151. . The user can complete the loading of the roll paper simply by lifting the roll paper to which the spindle 155 is attached and fitting both ends of the spindle 155 into the pair of support portions 151. Can be reduced.
[0029]
The delivery roller 152 and the pinch roller 153 are pivotally supported on the opposing surfaces of a pair of arm portions 154 that are oppositely arranged at both ends. That is, the feed roller 152 and the pinch roller 153 are arranged so as to be bridged between the pair of arm portions 154. The both ends of the feed roller 152 are axially supported at fixed locations on the opposing surfaces of the pair of arm portions 154, but the pinch roller 153 can be brought into contact with and separated from the feed roller 152. Both end shafts are axially supported so as to be movable in, for example, grooves provided on the opposing surfaces of the pair of arm portions 154. The pinch roller 153 is locked by a lock mechanism using a locking member and a biasing member provided on the facing surface of the arm portion 154 at a position where the pinch roller 153 is in contact with and separated from the feed roller 152, for example. It has come to be.
[0030]
The user can easily pull out the leading end portion of the roll paper by the bearing built in the support portion 151, and the leading end portion of the roll paper can be moved between the feed roller 152 and the pinch roller 153 by the moving mechanism of the pinch roller 153. Since it can be easily inserted and held between them, the number of man-hours for setting the roll paper can be greatly reduced.
[0031]
The pair of arm portions 154 are attached to the opposing surfaces of the two support pillars 142 of the leg portion 140 so as to be rotatable in the direction indicated by the arrows. Then, the rotation of the pair of arm portions 154 is performed by, for example, a locking member provided on the opposing surface of the support pillar 142 at the roll paper setting position shown in FIG. 7 and the roll paper feed position shown in FIG. It is positioned by being locked by a lock mechanism using an urging member or the like.
[0032]
That is, when the pair of arm portions 154 are rotated to the roll paper setting position, the feed roller 152 and the pinch roller 153 jump out to the front side of the ink jet printer 100, and the pair of arm portions 154 feed the roll paper. When rotated to the position, the feed roller 152 and the pinch roller 153 go around the back side of the ink jet printer 100 and are connected to the roll paper transport path.
[0033]
When the user inserts and pinches the leading edge of the roll paper between the feed roller 152 and the pinch roller 153, the user does not sink into the back side of the ink jet printer 100 but does not normally stand on the front side of the ink jet printer 100. Since the work can be performed at the position, the man-hours for setting the roll paper can be greatly reduced.
[0034]
In the above-described embodiment, the pair of support portions 151 are fixedly attached to the facing surfaces of the pair of arm portions 154 arranged to face each other, and rotate with the arm portions 154. Even if it is configured to be fixedly attached to a shaft concentric with the pivot shaft of the arm portion 154 attached to the opposing surfaces of the two support pillars 142, the same effect can be obtained. That is, the support part 151 may be fixed at a fixed position regardless of the rotation of the arm part 154.
[0035]
In such a configuration, the use procedure of the ink jet printer 100 will be described with reference to FIGS. First, as shown in FIG. 6A, the user pulls out one of the pair of roll paper pressers 156 fitted in the spindle 155 from one end of the spindle 155. Then, as shown in FIG. 6B, the user inserts one end of the spindle 155 from one end of the shaft hole C of the roll paper R and allows it to penetrate.
[0036]
Further, as shown in FIG. 6C, the user fits one end of the shaft hole C of the roll paper R into the other roll paper presser 156 inserted and fixed to the other end side of the spindle 155 to be brought into contact therewith. . Subsequently, the user inserts one roll paper presser 156 from one end of the spindle 155 and fits it into the other end of the shaft hole C of the roll paper R. As a result, the roll paper R can be rotated together with the spindle 155.
[0037]
Next, for example, the user pulls the delivery roller 152 forward to swing the arm unit 154 to position the arm unit 154 in the state of being positioned at the roll paper feeding position (see FIG. 5) in FIG. ) And lock it at the setting position of the roll paper shown in Then, the user lifts the roll paper R into which the spindle 155 is inserted above the support portion 151, and inserts both ends of the spindle 155 into the recesses 151a of the support portions 151 as shown in FIG. 7B. . As described above, since the mounting of the roll paper can be completed only by fitting both ends of the spindle 155 into the pair of support portions 151, the number of man-hours for setting the roll paper can be greatly reduced.
[0038]
Next, as shown in FIG. 8A, the user lifts the pinch roller 153, separates it from the feed roller 152, and locks it. Then, the leading end of the roll paper R is pulled forward and passed between the pinch roller 153 and the feed roller 152. Subsequently, as shown in FIG. 8B, the user pushes down the pinch roller 153 to abut against the feed roller 152 and locks it, and the leading edge of the roll paper R is moved between the pinch roller 153 and the feed roller 152. Hold between them. In this way, the leading edge of the roll paper can be pulled out and held between the feed roller 152 and the pinch roller 153 at the normal standing position on the front side of the ink jet printer 100, greatly increasing the number of man-hours for setting the roll paper. Can be reduced.
[0039]
Next, as shown in FIG. 9A, for example, the user pushes the feed roller 152 to the back to swing the arm portion 154, and rolls the arm portion 154 in a state positioned at the setting position of the roll paper. Position at the paper feed position. As a result, the leading end of the roll paper R sandwiched between the pinch roller 153 and the feed roller 152 is positioned at the entrance of the paper feed guide 157.
[0040]
Here, when the user operates the operation panel 170 to activate the ink jet printer 100, the feed roller 152 starts to rotate as shown in FIG. 9B. Then, the roll paper R sandwiched between the pinch roller 153 and the feed roller 152 is guided by the paper feed guide 157 and sent to the upper recording unit 120.
[0041]
Then, as shown in FIG. 10, the roll paper R is sandwiched between the paper feed roller 125 and its driven roller 126 until one side edge of the leading edge is positioned at the first and second paper position detection sensors 201 and 202. Then transported. Then, when one side edge of the leading end portion of the roll paper R reaches the first and second paper position detection sensors 201 and 202, the rotation of the paper feed roller 125 and the feed roller 152 is stopped.
[0042]
The detection signal input unit 203 obtains the conveyance position based on the detection signal of the roll paper R input from the first and second paper position detection sensors 201 and 202, and sends them to the calculation unit 204 as the detection conveyance position. The calculation unit 204 calculates a difference between the normal conveyance position stored in advance and the detected conveyance position input from the detection signal input unit 203, and based on each difference, a specific conveyance deviation that is a conveyance error of the roll paper R is calculated. Then, the conveyance curve is calculated and sent to the display control unit 205.
[0043]
The display control unit 205 displays, on the liquid crystal screen 170a of the operation panel 170, a message including specific directions and numerical values of the conveyance shift and the conveyance bending, which are correction commands, based on the conveyance error input from the calculation unit 204. Examples of this display are “Xmm is shifted to the right.”, “Please shift Ymm to the left.”, “Please rotate X degrees to the right.”, “Please rotate Y degrees to the left.” , How the user should correct the roll paper R is displayed. The user can recognize a specific correction method of the roll paper R by looking at a specific message displayed on the operation panel 170, so that an operation of changing the position and direction of the roll paper R can be immediately performed. Can be done accurately.
[0044]
Thereafter, the roll paper R is nipped again by the paper feed roller 125 and its driven roller 126, and is also nipped by the paper discharge roller 131 and its driven roller 132, and is moved in the main scanning direction while being conveyed in the sub-scanning direction. Predetermined information is recorded by ink droplets ejected from the head 121. After the recording is completed, the roll paper R is cut by the cutter 133 and is nipped between the paper discharge roller 131 and its driven roller 132 and discharged.
[0045]
As described above, according to the ink jet printer 100 of the present embodiment, the first and second paper position detection sensors 201 and 202 and the detection signal input unit 203 set the transport positions at a plurality of locations on one side edge of the roll paper. Since a plurality of detection signals are arranged in the conveyance direction, the conveyance error of the roll paper can be accurately obtained only by performing a simple arithmetic process on each detection signal. Further, the calculation unit 204 calculates the difference between the normal conveyance position and the detection conveyance position from the detection signal input unit 203, and calculates the conveyance deviation and conveyance bending of the roll paper based on the difference. The user can recognize the paper correction method. Further, since the display control unit 205 and the operation panel 170 display a message including a specific roll paper transport error direction and a numerical value in accordance with a calculation signal from the calculation unit 204, the user can specify the position and direction of the roll paper. It is possible to surely recognize whether the correction should be made to some extent. As a result, the user can immediately and accurately perform the operation of changing the position and direction of the roll paper, so that the setting of the roll paper can be completed in one operation.
[0046]
Although the present invention has been described with reference to various embodiments, the present invention is not limited to the above embodiments, and may be applied to other embodiments within the scope of the invention described in the claims. Of course. For example, in the above-described embodiment, an ink jet printer has been described as an example of a recording apparatus. However, the present invention is not limited to this, and any recording apparatus that uses a conveyance apparatus may be a facsimile apparatus, a copying apparatus, or the like. Is applicable. Furthermore, the recording apparatus is not limited to a recording apparatus as long as the apparatus conveys a medium, and can be applied to apparatuses other than the recording apparatus. Further, not only roll paper but also cut paper can be applied.
[Brief description of the drawings]
FIG. 1 is a perspective view illustrating a configuration example of an ink jet printer that is one of recording apparatuses according to an embodiment of the present invention.
FIG. 2 is a perspective view illustrating an example of an internal configuration of a main part of the printer of FIG.
3 is a cross-sectional view of a main part of the printer of FIG.
4 is a diagram illustrating details of a medium conveying device of the printer in FIG. 1. FIG.
5 is a perspective view illustrating details of a paper feeding unit of the printer of FIG. 1. FIG.
6 is a first diagram illustrating a procedure for using the printer of FIG. 1; FIG.
7 is a second diagram showing a procedure for using the printer of FIG. 1; FIG.
FIG. 8 is a third diagram illustrating a procedure for using the printer of FIG. 1;
FIG. 9 is a fourth diagram illustrating a procedure for using the printer of FIG. 1;
FIG. 10 is a fifth diagram showing a procedure for using the printer of FIG. 1;
FIG. 11 is a sixth diagram illustrating the procedure for using the printer of FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Ink cartridge, 100 Inkjet printer, 110 Main-body part, 111 Housing, 112 Top cover, 113 Front cover, 120 Recording part, 121 Recording head, 122 Carriage, 123 FFC, 124 Ink tube, 125 Paper feed roller, 126 Following roller, 127 rail, 128 carriage belt, 129 motor, 130 paper discharge unit, 131 paper discharge roller, 132 driven roller, 140 leg, 141 roller, 142 support pillar, 150 paper feed unit, 151 support unit, 152 feed roller, 153 pinch Roller, 154 arm part, 155 spindle, 156 roll paper press, 157 paper feed guide, 160 ink cartridge holder, 161 holder body, 162 cover, 170 operation panel, 170a liquid crystal screen, 180 control part, 200 medium Conveying device, 201 first paper position detection sensor, 202 second paper position detection sensor, 203 detection signal input unit, 204 calculation unit, 205 display control unit

Claims (5)

A medium conveying apparatus for conveying a medium,
A plurality of detection means for detecting a conveyance position of the medium that is arranged in the conveyance direction of the medium and stopped at the arrangement position;
A calculation means for obtaining a specific transport error based on a detection signal from the detection means;
A medium conveying apparatus comprising: display means for displaying a specific correction command by a calculation signal from the calculation means. The medium conveying apparatus according to claim 1, wherein the detecting unit is arranged to be able to detect a plurality of conveying positions on one side edge of the medium. 3. The calculation unit according to claim 1, wherein the calculation unit calculates a difference between a normal conveyance position and a detection conveyance position of the medium, and calculates conveyance deviation and conveyance bending of the medium based on the difference. Media transport device. The medium transport apparatus according to claim 1, wherein the display unit displays a message including a direction and a numerical value of a transport error of the medium. A recording apparatus for sending, recording and discharging a recording medium,
A recording apparatus comprising the medium conveyance device according to claim 1.

Images