JP2000344413A - Paper sheet carrier and paper sheet carrying method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper sheet carrier capable of certainly delivering and carrying a paper sheet between two units apart from each other. SOLUTION: This carrier has a pair of feeding rollers 3, 4 and a pair of carrying rollers 6, 7 disposed along a carrying direction (a) of a passbook T at a prescribed distance from each other. A timing sensor 9 (9a, 9b) for detecting the passbook T to acquire switching timing of the carrying rollers 6 is disposed on the carrying nip upstream side of the carrying rollers 6, 7. With the tip detection by the timing sensor 9 as a trigger, a peripheral speed of the carrying roller 6 is switched from a high speed to a low speed to deliver and carry the passbook T.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet conveying apparatus for transferring and transferring sheets between two units, and to a sheet conveying method.

[0002]

2. Description of the Related Art Generally, when a sheet is transferred between two units separated from each other and conveyed, the sheet conveying speed of a unit on the downstream side is higher than the conveying speed of the sheet on the upstream unit in the conveying direction. Control is performed to slightly increase the transport speed. As a result, the sheets are conveyed while being pulled between the units, and the conveyance skew and deformation are corrected.

[0003] More specifically, the leading end in the transport direction of a sheet nipped and transported by a pair of transport rollers disposed in an upstream unit is disposed in a downstream unit. It is sent between a pair of transport rollers and is delivered and transported. In this case, the peripheral speed of the transport roller of the downstream unit is controlled to be slightly higher than the peripheral speed of the transport roller of the upstream unit.

[0004]

However, if the leading end of the paper sheet sent from the upstream unit is undesirably curled, the leading end of the paper sheet may be undesirably curled. In some cases, the transfer is not smoothly performed between the pair of transport rollers of the unit, and the unit may come into contact with the downstream transport roller or run on the transport roller. In such a case, problems such as corner folding, center folding, and bending occur in the conveyed paper sheet, and this trouble causes the conveyance failure of the paper sheet.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to provide a paper sheet conveying apparatus capable of reliably transferring and conveying paper sheets between two units separated from each other.

[0006]

In order to achieve the above object, the present invention provides a paper sheet transport apparatus for transporting a paper sheet at a first speed in a predetermined direction, and a paper sheet being transported by the transport means. A pair of transport rollers that receive the leading end of the paper sheet in the transport direction and further transport the paper sheet in the predetermined direction at a second speed higher than the first speed, and transport of the paper sheet being transported by the transport means The peripheral speed of the pair of transport rollers is changed between the second speed and the third speed higher than the second speed until the leading end in the direction side is fed into the transport nip between the pair of transport rollers. Control means for switching control.

Further, according to the above-described paper sheet transport apparatus, the third speed is four to five times as fast as the first speed.

Further, according to the paper sheet transport apparatus, a deformation sensor for detecting the degree of deformation of the paper sheet transported by the transport means toward the pair of transport rollers is provided by the transport means of the pair of transport rollers. It is provided on the upstream side in the direction, and the conveyance of the paper sheet is stopped based on detecting that the degree of deformation of the paper sheet exceeds a predetermined level by the deformation sensor.

Further, the paper sheet transport device of the present invention is a transport means for transporting the paper sheet at a first speed in a predetermined direction, and receives the leading end of the paper sheet being transported by the transport means in the transport direction. A pair of transport rollers for further transporting in the predetermined direction at a second speed higher than the first speed, a timing sensor for detecting the transport direction side of the paper being transported by the transport means, Control means for switching the peripheral speed of at least one of the pair of transport rollers between a third speed higher than the second speed and the second speed based on a detection result by the sensor; It has.

Further, the paper sheet transport device of the present invention is arranged so as to face a transport path for transporting the paper sheet in a predetermined direction, with the transport path being interposed therebetween, and a first circumferential path having the paper sheet interposed therebetween. By rotating at a high speed, a pair of feed rollers for transporting the paper sheet in the predetermined direction along the transport path, and opposed to each other across the transport path on the downstream side in the transport direction from the pair of feed rollers. The paper sheet, which is arranged and conveyed by the pair of feed rollers, is rotated at a second peripheral speed higher than the first peripheral speed by sandwiching the leading end in the transport direction of the paper sheet, and thereby a predetermined number of paper sheets are provided. A pair of transport rollers for transporting the paper sheet in the predetermined direction along the transport path while applying tension to the paper sheet, and at least a pair of transport rollers of the pair of transport rollers opposed to the transport surface side of the transport path. The third peripheral speed higher than the second peripheral speed And a, and control means for switching control between the second circumferential speed.

According to the above-mentioned sheet transport apparatus, the timing sensor for detecting the leading end of the sheet transported by the pair of feed rollers is further provided. The peripheral speed of at least one of the transport rollers is switched based on the result.

Further, according to the paper sheet transport apparatus, the third peripheral speed is four to five times the first peripheral speed.

According to the above-described paper sheet transport apparatus, the degree of deformation of the paper sheets disposed on the transport surface side of the transport path and transported toward the pair of transport rollers by the pair of feed rollers is described. Is further provided, and when the deformation sensor detects that the degree of deformation of the sheet exceeds a predetermined level, the conveyance of the sheet is stopped.

Further, the paper sheet transport apparatus of the present invention transports a booklet in which a plurality of paper sheets are bound on one side thereof in a direction substantially orthogonal to the one side while a predetermined page is opened. Path, and at least one opening disposed downstream of the booklet in the direction of conveyance of the booklet.
A pair of feed rollers that rotate at a first peripheral speed while sandwiching the other side of the sheet that is not bound and convey the booklet along the conveyance path; and a pair of feed rollers downstream from the pair of feed rollers. Side of the at least one sheet of the booklet being nipped and conveyed by the pair of feed rollers while being opposed to each other with the conveyance path interposed therebetween, and faster than the first peripheral speed by interposing the other side of the at least one sheet. A pair of transport rollers that rotate at a second peripheral speed and transport the booklet along the transport path while applying a predetermined tension to the booklet between the pair of feed rollers; By the time the other side of the at least one sheet of the booklet being conveyed is fed into the conveying nip between the pair of conveying rollers, at least the conveying surface side of the conveying path of the pair of conveying rollers Transport row Circumferential speed of the are and a control means for switching control between a peripheral speed of the third faster than the second peripheral speed and said second peripheral speed.

According to the above-mentioned paper sheet transport apparatus, the other side of the at least one sheet of the booklet being transported by the pair of feed rollers is fed into the transport nip between the pair of transport rollers. A timing sensor for detecting the other side before the control is performed, wherein the control means switches the peripheral speed of at least one of the transport rollers based on a result detected by the timing sensor.

According to the paper sheet transport method of the present invention, the paper sheet is transported at a first speed in a predetermined direction, and the leading end of the paper sheet being transported in the transport direction is moved between a pair of transport rollers. The paper sheet that has been received and further conveyed in the predetermined direction at a second speed higher than the first speed is transferred between the pair of conveying rollers. The peripheral speed of the pair of transport rollers is switched between the second speed and a third speed higher than the second speed until the rollers are fed into the transport nip.

Further, according to the sheet transport method of the present invention, the pair of feed rollers are sandwiched between a pair of feed rollers disposed opposite to each other with a transport path extending in a predetermined direction therebetween. Rotating at a first peripheral speed, the sheet is conveyed in the predetermined direction along the conveyance path, and the leading end of the sheet in the conveyance direction, which is nipped and conveyed by the pair of feed rollers,
The pair of transport rollers are sandwiched between a pair of transport rollers disposed opposite to each other across the transport path on the downstream side in the transport direction with respect to the pair of feed rollers.
Rotate at a peripheral speed of, and convey the sheet in the predetermined direction along the conveyance path while applying a predetermined tension to the sheet,
Switching control of a peripheral speed of a transport roller facing at least a transport surface side of the transport path of the pair of transport rollers between a third peripheral speed higher than the second peripheral speed and the second peripheral speed It is characterized by doing.

Further, according to the paper sheet conveying method of the present invention, a booklet in which a plurality of paper sheets are bound on one side thereof is extended in a direction substantially orthogonal to the one side while a predetermined page is opened. Between the pair of feed rollers disposed opposite to each other with the conveyance path interposed therebetween, and binding at least one sheet opened at a downstream side in the conveyance direction of the booklet. The pair of feed rollers are rotated at a first peripheral speed to convey the booklet along the conveyance path, and the conveyance path is downstream from the pair of feed rollers in the conveyance direction. Between the pair of transport rollers disposed to face each other with the pair sandwiching the other side of the at least one sheet of the booklet being nipped and transported by the pair of feed rollers, the pair of transport rollers Rotating at a second peripheral speed higher than the first peripheral speed. While applying a predetermined tension to the booklet between the pair of feed rollers and the pair of transport rollers, the booklet is transported along the transport path, and at least the booklet being transported by the pair of transport rollers. Until the other side of one sheet is fed into the transport nip between the pair of transport rollers, the peripheral speed of at least the transport roller on the transport surface side of the transport path among the pair of transport rollers is set to Switching control is performed between a second peripheral speed and a third peripheral speed higher than the second peripheral speed.

[0019]

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

FIG. 1 shows a schematic configuration of a transport apparatus 1 for transporting a passbook as a transaction medium in a financial institution such as a bank as a paper sheet transport apparatus of the present invention. A passbook (not shown) is transported on the transport path 2 in a direction indicated by an arrow a in the figure while a predetermined page among a plurality of pages is opened, and is delivered and transported from the transport unit A to the transport unit B.
The passbook is transported in a posture in which one side on which a plurality of pages are bound is substantially orthogonal to the transport direction.

The transport device 1 is disposed at a predetermined distance from the transport unit A disposed on the upstream side (left side in the figure) of the passbook in the transport direction, and a predetermined distance downstream from the transport unit A (right side in the figure). Transfer unit B. A transport path 2 is provided between the two transport units A and B which are separated from each other.
There is no guide member that guides the conveyance in contact with the side along the conveyance direction of the passbook in order to guide the passbook along.

The upstream transport unit A includes a pair of feed rollers 3, which are opposed to each other with the transport path 2 vertically interposed therebetween,
4, and a transport guide 5 arranged on the upper side along the transport path 2. A pair of feed rollers 3 and 4
The rolled sheets are rolled to each other via a transport nip having a predetermined width, rotate at the first peripheral speed (VA) in the direction of the arrow in the drawing, and pass the passbook passing through the transport nip between the two at the first speed on the transport path 2. (V
In A), the sheet is conveyed in the direction of arrow a.

The downstream transport unit B includes a pair of transport rollers 6, 7 opposed to each other with the transport path 2 sandwiched from above and below, a transport guide 8 disposed above and along the transport path 2. And a timing sensor 9 for detecting a passbook conveyed toward the pair of conveying rollers 6 and 7. The outer diameter of the upper conveying roller 6 disposed opposite to the conveying path 2 is larger than the outer diameter of the lower conveying roller 7.

The timing sensor 9 has a light receiving portion 9a provided on the side of the transport roller 6 on the upper side of the transport path 2 and a light emitting portion 9b provided opposite thereto, the optical axis of which is a pair of the transport rollers. It is positioned and arranged so as to pass through a position separated by a distance L downstream from the transport nip between 6 and 7. In other words, the timing sensor 9 is positioned such that the position where the optical axis of the timing sensor 9 intersects the outer periphery of the upper transport roller 6 forms an angle α from the center of the transport roller 6 with respect to the vertical direction. At this time, the angle α
And the distance L is L = rsinθ, where r is the radius of the transport roller 6. In the present embodiment, the timing sensor 9 is set so that the angle α is about 45 °.
Was positioned and arranged.

The pair of transport rollers 6 and 7 have a second peripheral speed (VB) higher than the peripheral speed (VA) of the feed rollers 3 and 4 described above.
In 1), each pass rotates in the direction of the arrow in the figure, and the passbook sent to the transport nip between the two is transported along the transport path 2 at the second speed (VB1). The distance from the transport nip of the feed rollers 3 and 4 to the transport nip of the transport rollers 6 and 7 is the length along the transport direction of the passbook (the length from the leading end to the rear end of the passbook in the transport direction with the passbook open). Since the length of the passbook is set shorter, the leading end of the passbook being conveyed in the conveyance direction is transferred to the conveyance rollers 6 and 7 of the conveyance unit B by the feed rollers 3 and 4 of the conveyance unit A. Is delivered and conveyed in the state given.

FIG. 2 is a block diagram of a control system for controlling the transfer operation of the transfer device 1 described above. A timing sensor 9, a motor 12 for driving a pair of feed rollers 3 and 4, and a motor 14 for driving a pair of transport rollers 6 and 7 are connected to a control unit 10 of the transport device 1.
A clutch or the like (not shown) is provided between the transport rollers 6, 7 and the motor 14, and each of the transport rollers 6, 7 can rotate independently and at a variable speed.

Next, the operation of transporting the passbook T by the transport device 1 will be described with reference to FIGS.
Here, the transport operation of the passbook T when the leading end of at least one page opened on the downstream side in the transport direction of the passbook T is curled upward in the direction away from the transport path 2, that is, in the case where it is curled upward.

First, as shown in FIG. 3, a pair of feed rollers 3, 4 provided in the upstream transport unit A
The banknote T rotates in the direction indicated by the arrow A in the figure, and is conveyed at a speed VA in the direction indicated by the arrow a along the conveyance path 2 through the conveyance nip between the pair of feed rollers 3, 4. At this time, at least the upper transport roller 6 of the pair of transport rollers 6, 7 provided in the downstream transport unit B, to which the passbook T has not yet reached, is rotated at a high peripheral speed VB2. In the present embodiment, the peripheral speed VB2 of the transport rollers 6 is higher than the peripheral speed VB1 when the bankbook T is transported,
A was set to such an extent that the relationship of 4VA ≦ VB2 ≦ 5VA was satisfied.

In this state, as shown in FIG.
When the curled leading end of the passbook T sent in step (1) comes into contact with the outer peripheral surface of the transport roller 6 rotating at high speed at a contact angle θ,
The curled tip of the passbook T is urged downward in the tangential direction of the transport roller 6 at the contact portion, and the tip of the passbook T is transported between the pair of transport rollers 6 and 7 as shown in FIGS. You are forcibly guided toward the nip. In addition, passbook T
The contact angle θ of the leading end with respect to the transport roller 6 refers to an angle formed by a portion where the leading end of the passbook T contacts a line extending vertically downward from the center of the transport roller 6.

At this time, the leading end of the passbook T guided toward the transport nip is detected by the timing sensor 9 (see FIG. 5). When the leading edge detection by the timing sensor 9 is a trigger, the peripheral speed of the transport roller 6 is changed to the normal transport speed after a predetermined time has elapsed or when the leading edge of the passbook T has reached a position immediately before reaching the transport nip. Switch to VB1 (see FIG. 6).

As described above, in the transport apparatus 1 that transfers and conveys the passbook T between the two units A and B, the tip of the passbook T is applied while the downstream conveying roller 6 that receives the passbook T is rotated at a high speed. By bringing the passbook T into contact, even when the tip of the passbook T is undesirably curled, the tip can be reliably guided to the transport nip, and the passbook T can be reliably delivered and transported. In this embodiment, the transport roller 6 at the tip of the passbook T is used.
When the contact angle θ with respect to was approximately in the range of 45 ° ≦ θ ≦ 80 °, the passbook T could be reliably delivered and transported without causing transport failure.

Further, the rotation speed of the transport roller 6 is reduced to a normal speed immediately before the leading end of the passbook T reaches the transport nip, so that the upstream feed rollers 3 and 4 and the downstream transport rollers 6 and 7 are reduced. It is possible to prevent an excessive tension from being applied to the passbook T conveyed in a stretched state.

The present invention is not limited to the above-described embodiment, but can be variously modified within the scope of the present invention. For example, in the above-described embodiment, a case has been described in which the booklet-shaped passbook T in which a plurality of pages are bound is transported in an open state, but the present invention is not limited to this. The present invention can also be applied. In addition, passbook T
Page may be opened any number of times.

In the above-described embodiment, the case where the front end of the passbook T is curled has been described. However, the speed control of the present invention can be applied to the case where a passbook whose front end is not curled is conveyed. For example, as shown in FIG. 7, when the contact angle of the leading end of the passbook T with respect to the transport roller 6 is 40 °,
It is not necessary to rotate the transport roller 6 at high speed before the passbook T arrives, but the peripheral speed of the transport roller 6 may be switched as in the above-described embodiment.

Further, a sensor for detecting the contact angle θ of the leading end of the passbook T with respect to the transport roller 6 may be further provided, and the peripheral speed of the transport roller 6 may be switched according to the detected contact angle θ. That is, before the leading end of the passbook T contacts the outer peripheral surface of the transport roller 6, the degree of deformation of the leading end of the passbook, that is, the contact angle θ is detected, and if the contact angle θ is less than 45 °, the transport roller 6 May be controlled to a normal transport speed without rotating the.

As shown in FIG. 8, a deformation sensor 20 for detecting the limit of the curl of the passbook T, that is, the contact angle .theta. Is detected, error processing may be performed to stop the conveyance of the passbook T.

[0037]

As described above, the paper sheet transporting apparatus of the present invention has the above-described structure and operation, and thus reliably transfers paper sheets between the two units separated from each other. Can be transported.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a transport device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a control system for controlling a transfer operation by the transfer device of FIG. 1;

FIG. 3 is an operation explanatory diagram for explaining a passbook transport operation by the transport device of FIG. 1;

FIG. 4 is an operation explanatory diagram for explaining a passbook transport operation by the transport device of FIG. 1;

FIG. 5 is an operation explanatory diagram for explaining a passbook transport operation by the transport device of FIG. 1;

FIG. 6 is an operation explanatory diagram for explaining a passbook transport operation by the transport device of FIG. 1;

FIG. 7 is an operation explanatory diagram for explaining a transport operation when a contact angle is 40 °.

FIG. 8 is an operation explanatory diagram for explaining a transport operation when a contact angle is 80 °.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Conveying apparatus, 2 ... Conveying path, 3, 4 ... Feeding roller, 5, 8 ... Conveying guide, 6, 7 ... Conveying roller, 9 ... Timing sensor, 10 ... Control part, 12, 14 ... Motor, 20 ... Deformation Sensors, A, B: transport unit, T: passbook.

Claims (13)

[Claims] A transport unit configured to transport a sheet in a predetermined direction at a first speed; and a second unit that receives a leading end of the sheet being transported in the transport direction by the transport unit and is higher than the first speed. A pair of transport rollers for further transporting in the predetermined direction at the speed described above, and a period until the leading end in the transport direction of the paper sheet transported by the transport unit is fed into a transport nip between the pair of transport rollers. Control means for controlling the peripheral speed of the pair of conveying rollers between the second speed and a third speed higher than the second speed. . 2. The method according to claim 1, wherein the third speed is four times the first speed.
2. The sheet conveying apparatus according to claim 1, wherein the speed is double to five times. 3. A deformation sensor for detecting the degree of deformation of a sheet conveyed toward the pair of conveyance rollers by the conveyance means is provided upstream of the pair of conveyance rollers in the conveyance direction. 2. The sheet transport apparatus according to claim 1, wherein the transport of the sheet is stopped based on detecting that the degree of deformation of the sheet exceeds a predetermined level. 4. A transport means for transporting paper sheets in a predetermined direction at a first speed, and a second means which receives a leading end of the paper sheet being transported in the transport direction by the transport means and is higher than the first speed. A pair of transport rollers for further transporting the sheet in the predetermined direction at a speed of; a timing sensor for detecting the transport direction side of the sheet being transported by the transport unit; and a pair of the pair of transport rollers based on a detection result by the timing sensor. Control means for switching control of the peripheral speed of at least one of the transport rollers between a third speed higher than the second speed and the second speed. Leaf transport device. 5. A transport path for transporting paper sheets in a predetermined direction, the paper path being disposed opposite to the transport path, and rotating at a first peripheral speed across the paper sheets, A pair of feed rollers for transporting the same in the predetermined direction along the transport path; and a pair of feed rollers disposed downstream of the pair of feed rollers in the transport direction with the transport path interposed therebetween, and pinched by the pair of feed rollers. By rotating at a second peripheral speed higher than the first peripheral speed with the transport direction side end of the paper sheet being transported interposed therebetween, the paper sheet is given a predetermined tension while being given a predetermined tension. A pair of transport rollers for transporting in the predetermined direction along the transport path, and a peripheral speed of at least a transport roller of the pair of transport rollers opposed to a transport surface side of the transport path is faster than the second peripheral speed. Switching control between the third peripheral speed and the second peripheral speed A sheet transport device, comprising: control means; 6. A timing sensor for detecting a leading end of a sheet conveyed by the pair of feed rollers, wherein the control means detects at least the conveying roller based on a detection result by the timing sensor. The paper sheet transport device according to claim 5, wherein the peripheral speed of one roller is switched. 7. The third peripheral speed is four times the first peripheral speed.
7. The sheet conveying apparatus according to claim 5, wherein the speed is double to five times. 8. A deformation sensor disposed on a conveyance surface side of the conveyance path, the deformation sensor detecting a degree of deformation of a sheet conveyed by the pair of feed rollers toward the pair of conveyance rollers, 7. The paper sheet transport apparatus according to claim 6, wherein the transport of the paper sheets is stopped based on the fact that the degree of deformation of the paper sheets exceeds a predetermined level by the deformation sensor. . 9. A transport path for transporting a booklet in which a plurality of sheets are bound on one side thereof in a direction substantially orthogonal to the one side with a predetermined page opened, The booklet is disposed to face each other and opened at the downstream side in the transport direction of the booklet. A pair of feed rollers for transporting along the transport path, and a booklet that is disposed opposite to each other across the transport path on the downstream side in the transport direction from the pair of feed rollers and is nipped and transported by the pair of feed rollers. At least one of the above
The booklet is rotated at a second peripheral speed higher than the first peripheral speed by sandwiching the other side of the sheet, and while applying a predetermined tension to the booklet with the pair of feed rollers, the booklet is A pair of transport rollers for transporting along the transport path, and the other side of the at least one sheet of the booklet being transported by the pair of feed rollers is fed into a transport nip between the pair of transport rollers. Between the second peripheral speed and the third peripheral speed, which is higher than the second peripheral speed, between the peripheral speeds of the transport rollers on the transport surface side of the transport path of the pair of transport rollers. A sheet transport device, comprising: control means for performing switching control by: 10. A timing for detecting the other side of the at least one sheet of the booklet being conveyed by the pair of feed rollers before the other side of the at least one sheet is fed to a conveyance nip between the pair of conveyance rollers. The sheet transport apparatus according to claim 9, further comprising a sensor, wherein the control means switches a peripheral speed of at least one of the transport rollers based on a detection result by the timing sensor. . 11. A paper sheet is conveyed in a predetermined direction at a first speed, and a leading end of the paper sheet being conveyed in the conveyance direction is received between a pair of conveyance rollers, and a second sheet faster than the first speed is received. The paper is further transported in the predetermined direction at the speed of the above, and the paper sheet being transported toward the space between the pair of transport rollers is transported to the transport nip between the pair of transport rollers. A sheet conveying method, wherein the peripheral speed of a pair of conveying rollers is controlled to be switched between the second speed and a third speed higher than the second speed. 12. A pair of feed rollers, which are arranged opposite to each other with a conveyance path extending in a predetermined direction therebetween, and rotate the pair of feed rollers at a first peripheral speed with paper sheets interposed therebetween. The leaves are transported in the predetermined direction along the transport path, and the transport direction end of the paper sheet being nipped and transported by the pair of feed rollers is transported downstream of the pair of transport rollers in the transport direction. The pair of transport rollers is rotated at a second peripheral speed higher than the first peripheral speed, sandwiched between a pair of transport rollers disposed to face each other across the path, and a predetermined tension is applied to the paper sheet. The paper sheet is conveyed in the predetermined direction along the conveyance path while giving the sheet speed, and the peripheral speed of at least the conveyance roller of the pair of conveyance rollers opposed to the conveyance surface side of the conveyance path is set to the second circumference. Switching control between a third peripheral speed higher than the first speed and the second peripheral speed. Conveying paper sheets wherein. 13. A booklet in which a plurality of paper sheets are bound on one side thereof is transported through a transport path extending in a direction substantially orthogonal to the one side with a predetermined page opened. A pair of unrolled other sides of at least one sheet opened to the downstream side in the transport direction of the booklet are sandwiched between a pair of feed rollers arranged to face each other with the path therebetween, and the pair of A feed roller is rotated at a first peripheral speed, and the booklet is transported along the transport path. A pair of the feed rollers are disposed on the downstream side in the transport direction of the pair of feed rollers and opposed to each other with the transport path interposed therebetween. The other side of the at least one sheet of the booklet being nipped and transported by the pair of feed rollers is sandwiched between the transport rollers, and the pair of transport rollers is rotated by a second speed higher than the first peripheral speed.
The booklet is rotated along the peripheral speed, and while applying a predetermined tension to the booklet between the pair of feed rollers and the pair of transport rollers, the booklet is transported along the transport path, and is transported by the pair of feed rollers. Until the other side of the at least one sheet of the booklet is sent to the transport nip between the pair of transport rollers, at least one of the pair of transport rollers is on the transport surface side of the transport path. A sheet conveying method, wherein the peripheral speed of a conveying roller is controlled to be switched between the second peripheral speed and a third peripheral speed higher than the second peripheral speed.