Medium processing device

Abstract

To provide a medium processing device capable of appropriately processing a medium even when a sensor flickers due to an edge of the medium.SOLUTION: A medium processing device 1 transports an inserted medium to a first position on an insertion / ejection transport path 9b, which is an insertion transport path, and then transports the medium to a second position advanced by a predetermined distance from the first position toward a rear of the device, and when a first sensor S1 detects the medium at the second position, transports the medium toward the rear of the device, and when the first sensor S1 does not detect the medium at the second position, transports the medium toward a front side of the device until the first sensor S1 detects the medium, and then transports the medium toward the rear of the device.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a media processing device. [Background technology]

[0002] Regarding detection of the medium length, a technique is known in which a plurality of sensors are used to detect the length in the transport direction (see, for example, Patent Document 1). There are also passbook slip printers that print on passbooks and slips, which are media. These passbook slip printers are installed in financial institutions, for example. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-020283 A Summary of the Invention [Problem to be solved by the invention]

[0004] In general, a passbook slip printer processes media of different lengths. Therefore, in a conventional passbook slip printer, when a medium is inserted, the printer first performs control to detect the length of the medium (medium length detection control). The medium length detection control in a conventional passbook slip printer will be described with reference to Fig. 8. The conventional passbook slip printer 101 shown in Fig. 8 has an insertion slot 106 through which the medium B9 is inserted, and an insertion conveying path 109b that is continuous with the insertion slot 106 and through which the inserted medium B9 is conveyed. A first sensor S101 and a second sensor S102 are installed on the insertion conveying path 109b.

[0005] In conventional medium length detection control, medium B9 inserted from insertion slot 106 is transported to the first position shown in Fig. 8, and in the process, second sensor S102 detects the leading end of medium B9. Next, first sensor S101 detects the presence of medium B9 at the first position, and if first sensor S101 detects medium B9 (i.e., if the trailing end of medium B9 is closer to the front of the device than first sensor S101 (position indicated by symbol P1)), medium B9 is transported to the rear of the device and first sensor S101 detects the trailing end of medium B9. This control is for long medium B9.

[0006] On the other hand, if the first sensor S101 detects the presence of medium B9 at the first position but the first sensor S101 cannot detect medium B9 (i.e., the trailing end of medium B9 is further back than the first sensor S101 (position indicated by reference symbol P2)), medium B9 is transported to the rear of the device and the first sensor S101 cannot detect the trailing end position of medium B9. In that case, medium B is transported to the front of the device until the first sensor S101 detects medium B9, and then medium B is transported to the rear of the device, and the trailing end of medium B9 is detected by the first sensor S101. This control is for short medium B9.

[0007] However, when the rear end of medium B9 in the first position is at the position of the first sensor S101 (position indicated by reference symbol P3), a phenomenon occurs in which the detection result of the first sensor S101 changes over time (flickering). When this flickering occurs, it is not possible to determine from the detection result of the first sensor S101 whether medium B9 should be transported from the first position to the rear side of the device as a long medium B9, or whether medium B9 should be transported once to the front side of the device as a short medium B9.

[0008] The present invention has been made in consideration of the above problems, and provides a media processing device that can properly process a medium even if the edge of the medium causes the sensor to flicker. [Means for solving the problem]

[0009] In order to solve the above problem, a media processing device according to one embodiment of the present invention comprises an insertion port through which a medium is inserted, an insertion transport path along which the inserted medium is transported, a sensor installed on the insertion transport path for detecting the presence of the medium, and a control unit for controlling the transport of the medium, wherein the control unit transports the inserted medium to a first position on the insertion transport path, and then to a second position a predetermined distance away from the first position toward the rear of the device, and if the sensor detects the medium at the second position, transports the medium toward the rear of the device, and if the sensor does not detect the medium at the second position, transports the medium toward the front of the device until the sensor detects the medium, and then transports the medium to the rear of the device. Effect of the Invention

[0010] According to the present invention, even if the edge of the medium causes the sensor to flicker, the medium can be properly processed. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a schematic configuration diagram of a passbook slip printer (media processing device) according to first and second embodiments of the present invention. [Diagram 2] 1A and 1B are image diagrams for explaining the positional relationship between the medium at the first position and the first and second sensors, where (a) shows the positional relationship at the first medium, (b) shows the positional relationship at the second medium, and (c) shows the positional relationship at the third medium. [Diagram 3] 1A to 1C are image diagrams for explaining the positional relationship between the medium and the first and second sensors at the second position, where (a) shows the positional relationship at the first medium, (b) shows the positional relationship at the second medium, and (c) shows the positional relationship at the third medium. [Figure 4] 5A to 5C are diagrams for explaining control from a second position, where (a) shows control in a first medium, (b) shows control in a second medium, and (c) shows control in a third medium. [Diagram 5]5A to 5C are diagrams for explaining control from a second position, where (a) shows control in a first medium, (b) shows control in a second medium, and (c) shows control in a third medium. [Figure 6] 11 is an image diagram for explaining the positional relationship between the medium and the third sensor at the first position, where (a) shows the positional relationship at the fourth medium, (b) shows the positional relationship at the fifth medium, and (c) shows the positional relationship at the sixth medium. [Figure 7] 11 is an image diagram for explaining the positional relationship between the medium and the third sensor at the second position, where (a) shows the positional relationship at the fourth medium, (b) shows the positional relationship at the fifth medium, and (c) shows the positional relationship at the sixth medium. [Figure 8] 11A and 11B are diagrams for explaining medium length detection control performed in a conventional bankbook slip printer. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Each drawing is merely a schematic illustration to the extent that the present invention can be fully understood. Therefore, the present invention is not limited to only the illustrated examples. In addition, in the drawings to which reference is made, the dimensions of the members constituting the present invention may be exaggerated or otherwise expressed in order to clarify the explanation. In addition, in each drawing, the same reference numerals are given to common or similar components, and their repeated explanations are omitted.

[0013] [First embodiment] <Configuration of the media processing device according to the first embodiment> The configuration of a media processing device 1 according to a first embodiment will be described with reference to FIG. 1. FIG. 1 is a schematic diagram of the media processing device 1. In the description of the media processing device 1, "up and down" and "front and back" refer to the arrows in FIG. 1. These directions are defined for the sake of convenience and do not limit the invention. Note that the front side in FIG. 1 is an example of the "front side of the device" and the rear side is an example of the "rear side of the device."

[0014] The media processing device 1 is a device that processes media. Media include, for example, bankbooks, slips, cards, and tickets. In this embodiment, the media processing device 1 will be described as a bankbook slip printer. A bankbook slip printer is a device that prints on different types of media, namely bankbooks and slips. A bankbook slip printer is operated, for example, by a person (operator) in charge of counter operations at a financial institution.

[0015] The media processing device 1 shown in Figure 1 (which in this embodiment is assumed to be a passbook slip printer) mainly comprises an inserter unit 2, a printing unit 3, and an auto-turn page (ATP) unit 4. These units are installed side by side in the front-to-back direction inside a housing 1a. The media processing device 1 also comprises a control unit 20 that controls the operation of the inserter unit 2, printing unit 3, and auto-turn page unit 4. The control performed by the control unit 20 includes control over media transport.

[0016] The media processing device 1 includes a transport path 9 along which the media is transported, and multiple sensors S are installed on the transport path 9 to detect the presence of media. The sensors S are, for example, photoelectric sensors, and are capable of detecting the presence of media from changes in the amount of light. The sensors S detect the "presence / absence" of media, for example, from light / dark states. In this embodiment, the sensors S are ON when they detect the presence of media, and OFF when they do not detect the presence of media. The sensors S send a signal corresponding to the ON / OFF state to the control unit 20. The conveying path 9 is made up of upper and lower guide portions 12 that guide the medium, conveying feed rollers 10 that convey the medium, conveying pressure rollers 11 that press the medium against the conveying feed rollers 10, and the like.

[0017] The conveying feed rollers 10 are connected to a conveying pulse motor (not shown) and rotate by the driving force of the conveying pulse motor. The conveying pressure rollers 11 are disposed opposite the conveying feed rollers 10. A transport path 9 is provided across the inserter unit 2, the printing unit 3, and the auto-turn page unit 4, and the medium can be moved between the units via the transport path 9.

[0018] The inserter unit 2 shown in Fig. 1 is mounted on the front side of the media processing device 1. The inserter unit 2 has the function of receiving media such as bankbooks and slips set by the operator, taking in the set media, and ejecting media after printing has been completed. The inserter unit 2 has an upper inserter section 2a and a lower inserter section 2b. The upper inserter section 2a and the lower inserter section 2b are arranged next to each other in the vertical direction.

[0019] The upper inserter section 2a is configured to accept slips and has a slip stage (not shown) for setting the slip, and a slip insertion and ejection port 5 for inserting slips into the device and ejecting them out of the device. The lower inserter section 2b is configured to receive passbooks, and has a passbook stage (not shown) for setting the passbook, and a passbook insertion and ejection port 6 for inserting the passbook into the device and ejecting it from the device.

[0020] The transport path 9 that continues from the document insertion and discharge port 5 and transports media inserted from the document insertion and discharge port 5 and discharged to the document insertion and discharge port 5 will be referred to as the "insertion and discharge transport path 9a." The insertion and discharge transport path 9a is, for example, the section between the document insertion and discharge port 5 and the printing unit 3. The conveying path 9, which is continuous with the passbook insertion and ejection opening 6 and conveys the medium to be inserted into and ejected from the passbook insertion and ejection opening 6, will be referred to as the "insertion and ejection conveying path 9b." The insertion and ejection conveying path 9b is, for example, the portion between the passbook insertion and ejection opening 6 and the printing unit 3.

[0021] As shown in Fig. 1, the insertion and discharge conveying path 9a and the insertion and discharge conveying path 9b join together in front of (upstream of) the reading section 7 of the printing unit 3. As a result, a slip inserted through the slip insertion and discharge port 5 and a passbook inserted through the passbook insertion and discharge port 6 are inserted at different locations but pass through the same conveying path 9 behind the device (downstream) from the point where the conveying paths join. Note that the insertion and discharge conveying path 9b is shorter than the insertion and discharge conveying path 9a. The insertion and discharge conveying path 9a and the insertion and discharge conveying path 9b are examples of an "insertion conveying path" and a "discharge conveying path".

[0022] As shown in Fig. 1, a first sensor S1 and a second sensor S2 are installed on the insertion / ejection transport path 9b. The first sensor S1 is used to detect the rear end of the medium when detecting the length of the medium in the transport direction (front-rear direction) (referred to as "medium length"). The second sensor S2 is used to detect the front end of the medium when detecting the medium length. The second sensor S2 is installed further back (rear) of the device than the first sensor S1. A third sensor S3 is also provided on the insertion / ejection transport path 9a. When detecting the medium length, the third sensor S3 operates as a leading end detection sensor that determines the leading end of the medium and a trailing end detection sensor that determines the trailing end of the medium. The medium length is detected when a medium is inserted into the media processing device 1. Details of the medium length detection control will be described later.

[0023] The printing unit 3 shown in Fig. 1 is mounted behind the inserter unit 2. The printing unit 3 has a function of printing on media (slips and passbooks) and a function of detecting printed lines for printing. Specifically, the printing unit 3 has a reading unit 7 and a print head 8. The reading unit 7 reads page marks and printed lines of a passbook, which is a medium, and print lines of a slip. The print head 8 prints on the passbook and slip, which are media.

[0024] The auto-turn page unit 4 shown in Fig. 1 is mounted behind the printing unit 3. The auto-turn page unit 4 has a function for turning the pages of a passbook. When it is determined that a page needs to be turned, the passbook is transported from the printing unit 3 to the auto-turn page unit 4, which then turns the page and sends the passbook back to the printing unit 3.

[0025] (Regarding medium feed control (including "medium length detection control") according to the first embodiment) The medium feed control in the first embodiment will be described with reference to Figures 2 to 5 (and Figure 1 as appropriate). In the first embodiment, attention is focused on the feed of a passbook via the passbook insertion and ejection port 6 (i.e., the feed operation in the lower inserter unit 2b). The feed of a slip via the slip insertion and ejection port 5 (i.e., the feed operation in the upper inserter unit 2a) will be described in the second embodiment. The media processing device 1 is capable of processing bankbooks and slips of different media lengths, and the first embodiment illustrates control of bankbooks of different media lengths. When a bankbook is inserted, the control unit 20 first performs control to detect the media length.

[0026] As shown in Fig. 2, the control unit 20 (see Fig. 1) performs a line feed (LF) to transport the medium B inserted from the passbook insertion and ejection opening 6 to a first position on the insertion and ejection transport path 9b. Fig. 2 is an image diagram for explaining the positional relationship between the medium B and the first and second sensors S1 and S2 at the first position, where (a) shows the positional relationship for the first medium B1, (b) shows the positional relationship for the second medium B2, and (c) shows the positional relationship for the third medium B3.

[0027] 2 is the initial position for detecting the medium length LB, and is sometimes called the "clamp position", etc. In the first position, the front end of the medium B in the insertion direction slightly exceeds the second sensor S2 (for example, by a few mm). 2(a) is a long medium, and its dimension is longer than the sensor distance LS12 between the first sensor S1 and the second sensor S2. The rear end of the first medium B1 in the insertion direction at the first position is closer to the device than the first sensor S1. 2B is a short medium, and its dimension is shorter than the sensor distance LS12 between the first sensor S1 and the second sensor S2. The rear end of the second medium B2 at the first position is located deeper in the device than the first sensor S1. 2(c) has the same dimensions as the inter-sensor distance LS12 between the first sensor S1 and the second sensor S2 (or slightly longer than the inter-sensor distance LS12). As a result, the relationship between the medium lengths LB of the first medium B1, the second medium B2, and the third medium B3 is "medium length LB2<medium length LB3<medium length LB1."

[0028] The second sensor S2 detects the leading end of the medium B being transported to the first position. For example, the second sensor S2 detects the "OFF state (no medium)" before the leading end of the medium B passes by, and switches to the "ON state (medium present)" when the leading end of the medium B passes by. The second sensor S2 transmits the detection result (ON / OFF state) to the control unit 20, and the control unit 20 determines the leading end position of the medium B based on the detection result of the second sensor S2. For example, the control unit 20 determines the leading end position of the medium B based on the timing of switching from the OFF state to the ON state and the number of pulses of a transport pulse motor (not shown). The first position may be a position corresponding to the stopping distance from when the second sensor S2 detects the ON state (medium present) to when the medium B is stopped.

[0029] Note that when medium B is transported to the first position, the control unit 20 only monitors the second sensor S2, and does not monitor the first sensor S1. In other words, the media processing device 1 envisioned in this embodiment is premised on a simple control scheme in which multiple sensors S are monitored by one mechanical control task, without having an independent task for each sensor S. Therefore, even if the trailing end of the second medium B2 passes the first sensor S1 when medium B is transported to the first position, the control unit 20 does not determine the trailing end position of the second medium B2. After medium B is transported to the first position, the control unit 20 changes the monitoring target from the second sensor S2 to the first sensor S1.

[0030] In the case of the first medium B1 shown in FIG. 2(a), the first sensor S1 detects the ON state (medium present). In the case of the second medium B2 shown in FIG. 2(b), the first sensor S1 detects the OFF state (no medium present). In the case of the third medium B3 shown in FIG. 2(c), the rear end of the third medium B3 overlaps with the first sensor S1, causing the first sensor S1 to repeatedly detect the ON state (medium present) and the OFF state (no medium present) over time. In other words, a phenomenon (flickering) occurs in which the ON state (medium present) and the OFF state (no medium present) switch between each other.

[0031] Next, as shown in Fig. 3, the control unit 20 (see Fig. 1) performs a line feed (LF) to transport medium B from the first position to a second position that is a predetermined distance toward the back of the device. Transport from the first position to the second position is performed for all media B regardless of the media length LB. Fig. 3 is an image diagram for explaining the positional relationship between medium B and the first sensor S1 and second sensor S2 at the second position, where (a) shows the positional relationship for the first medium B1, (b) shows the positional relationship for the second medium B2, and (c) shows the positional relationship for the third medium B3.

[0032] As a result, the rear end of the third medium B3 shown in Fig. 3(c) is positioned at the rear side of the first sensor S1, eliminating flickering. Therefore, the control unit 20 obtains an OFF state (no medium) signal from the first sensor S1. The distance from the first position to the second position may be a distance (e.g., 2 to 3 mm) that allows the first sensor S1 to eliminate flickering. In the first medium B1 shown in Fig. 3(a), the first sensor S1 remains in the ON state, and in the second medium B2 shown in Fig. 3(b), the first sensor S1 remains in the OFF state.

[0033] The subsequent control differs depending on the detection result of the first sensor S1 at the second position. The transport of medium B from the second position will be described with reference to Figures 4 and 5. Figures 4 and 5 are diagrams for explaining the control from the second position, where (a) shows the control for the first medium B1, (b) shows the control for the second medium B2, and (c) shows the control for the third medium B3.

[0034] (When the first sensor S1 is in the OFF state (no media) at the second position) In the case of the second medium B2 and the third medium B3 shown in FIGS. 4(b) and (c), the control unit 20 performs a reverse line feed (BLF) to transport the medium B toward the front side of the device, and transports the medium B to the third position where the first sensor S1 turns ON (medium present). At the third position, the rear end of the medium B slightly exceeds the first sensor S1 (for example, by a few mm). The third position may be a position corresponding to the stopping distance from when the first sensor S1 detects the ON state (medium present) to when the medium B is stopped. As a result, the first sensor S1 turns ON (medium present) in the same way as the first medium B1 at the second position (see FIG. 3(a)), and the same transport control is possible for all media B.

[0035] (When the first sensor S1 is ON (medium present) at the second position) In the case of the first medium B1 shown in Fig. 4(a), the medium is not transported to the front side of the device by reverse line feeding (BLF). In other words, unlike the second medium B2 and the third medium B3, the first medium B1 is not transported and is kept at the second position (see Fig. 4(a)).

[0036] Next, as shown in Fig. 5, the control unit 20 line feeds (LF) the medium B and transports it toward the back of the device until the first sensor S1 turns OFF (no medium). This control is performed for all media B regardless of the medium length LB. The first sensor S1 transmits its detection result (ON / OFF state) to the control unit 20, and the control unit 20 determines the position of the rear end of the medium B based on the detection result of the first sensor S1. For example, the control unit 20 determines the position of the rear end of the medium B based on the timing of switching from the ON state to the OFF state and the number of pulses of a transport pulse motor (not shown).

[0037] Then, the control unit 20 calculates the medium length LB of the medium B based on the determined leading end position and trailing end position. For example, the medium length LB is calculated by "medium length LB = leading end position - trailing end position". After the medium length detection control is completed, the control unit 20 transports the medium B to the rear side of the device and performs processing by the printing unit 3 and the auto turn page unit 4.

[0038] As described above, in the first embodiment, medium B is transported from the first position on the insertion / ejection transport path 9b to the second position, which is a predetermined distance toward the back of the device, and medium B at the second position is detected by the first sensor S1. Therefore, as shown in FIG. 2(c), even if the rear end of third medium B3 overlaps with the first sensor S1 at the first position, this condition can be eliminated at the second position. As a result, third medium B3 can be appropriately processed.

[0039] In the first embodiment, if the medium B to be handled by the media processing device 1 is predetermined, the second position can be set taking into consideration the medium length LB of the medium B to be handled, thereby preventing the rear end of medium B, which did not overlap the first sensor S1 at the first position, from overlapping at the second position. In the first embodiment, when the first medium B1 is transported a predetermined distance from the first position to the second position, the rear side of the first medium B1 may cause the first sensor S1 to flicker. In that case, the medium B1 can be transported a further predetermined distance toward the back of the device to eliminate the flicker. After the flicker is eliminated, the sensor S1 is in the OFF state, so the medium can be transported in the same way as the media B2 and B3, which have the sensor S1 in the OFF state at the second position.

[0040] Furthermore, situations may arise where a medium of a size not originally anticipated in the device configuration of the media processing device is to be handled. In such cases, if flickering occurs when the rear edge of the newly handled medium overlaps the sensor, applying the first embodiment to the media processing device makes it possible to eliminate flickering of the newly handled medium by only changing part of the media transport control, without making major changes to the device configuration or control.

[0041] [Second embodiment] In the first embodiment, the description focuses on the insertion of a passbook via the passbook insertion and ejection port 6 (i.e., the description focuses on the insertion operation in the lower inserter unit 2b). In the second embodiment, the description focuses on the insertion of a slip via the slip insertion and ejection port 5 (i.e., the description focuses on the insertion operation in the upper inserter unit 2a).

[0042] (Regarding medium feed control (including "medium length detection control") according to the second embodiment) As shown in FIG. 6, the control unit 20 (see FIG. 1) performs a line feed (LF) to transport the medium B inserted from the slip insertion and ejection port 5 to a first position on the insertion and ejection transport path 9a. FIG. 6 is an image diagram for explaining the positional relationship between the medium B and the third sensor S3 at the first position, where (a) shows the positional relationship for the fourth medium B4, (b) shows the positional relationship for the fifth medium B5, and (c) shows the positional relationship for the sixth medium B6. The relationship between the medium length LB4 of the fourth medium B4, the medium length LB5 of the fifth medium B5, and the medium length LB6 of the sixth medium B6 is the same as the relationship between the medium length LB1 of the first medium B1, the medium length LB2 of the second medium B2, and the medium length LB3 of the third medium B3 in the first embodiment. In other words, "medium length LB5<medium length LB6<medium length LB4".

[0043] The first position shown in FIG. 6 is the initial position for detecting the medium length LB, and may be called the "clamp position." In the first position shown in FIG. 6, the front end of medium B passes beyond the junction of the insertion / ejection transport paths 9a, 9b. A blade for switching the transport path is provided at the junction (branch) of the insertion / ejection transport paths 9a, 9b. Note that the first position in FIG. 6 is merely an example, and for example, the front end of medium B may be located on the front side of the junction of the insertion / ejection transport paths 9a, 9b.

[0044] The third sensor S3 detects the leading end of medium B being transported to the first position. For example, the third sensor S3 detects the "OFF state (no medium)" before the leading end of medium B passes by, and switches to the "ON state (medium present)" when the leading end of medium B passes by. The third sensor S3 transmits the detection result (ON / OFF state) to the control unit 20, and the control unit 20 determines the leading end position of medium B based on the detection result of the third sensor S3. For example, the leading end position of medium B is determined based on the timing of switching from the OFF state to the ON state and the number of pulses of a transport pulse motor (not shown).

[0045] Note that when medium B is transported to the first position, the control unit 20 monitors only the detection of the leading end by the third sensor S3, and does not monitor the detection of the trailing end by the third sensor S3. Therefore, even if the trailing end of second medium B2 passes the third sensor S3 when medium B is transported to the first position, the control unit 20 does not determine the trailing end position of second medium B2. After medium B is transported to the first position, the control unit 20 changes the monitoring target of the third sensor S3 to the detection of the trailing end.

[0046] In the case of the fourth medium B4 shown in Fig. 6(a), the third sensor S3 detects the ON state (medium present). In the case of the fifth medium B5 shown in Fig. 6(b), the third sensor S3 detects the OFF state (no medium present). In the case of the sixth medium B6 shown in Fig. 6(c), the rear end of the sixth medium B6 overlaps with the third sensor S3, causing the third sensor S3 to repeatedly detect the ON state (medium present) and the OFF state (no medium present) over time. In other words, a phenomenon (flickering) occurs in which the ON state (medium present) and the OFF state (no medium present) switch.

[0047] Next, as shown in Fig. 7, the control unit 20 (see Fig. 1) performs a line feed (LF) to transport medium B from the first position to a second position that is a predetermined distance toward the back of the device. Transport from the first position to the second position is performed for all media B regardless of the media length LB. Fig. 7 is an image diagram for explaining the positional relationship between medium B and the third sensor S3 at the second position, where (a) shows the positional relationship for the fourth medium B4, (b) shows the positional relationship for the fifth medium B5, and (c) shows the positional relationship for the sixth medium B6.

[0048] As a result, the rear end of the sixth medium B6 shown in Fig. 7(c) is positioned at the rear side of the third sensor S3, eliminating flickering. Therefore, the control unit 20 obtains an OFF state (no medium) signal from the third sensor S3. The distance from the first position to the second position may be a distance (e.g., 2 to 3 mm) that allows the third sensor S3 to eliminate flickering. In addition, in the fourth medium B4 shown in Fig. 7(a), the third sensor S3 remains in the ON state, and in the fifth medium B5 shown in Fig. 7(b), the third sensor S3 remains in the OFF state.

[0049] The subsequent control is the same as in the first embodiment. That is, the control differs depending on the detection result of the third sensor S3 at the second position. (When the third sensor S3 is OFF (no media) at the second position) In the case of the fifth medium B5 and the sixth medium B6, the control unit 20 performs a reverse line feed (BLF) to transport the medium toward the front of the device, transports it to the third position where the third sensor S3 is ON (media present), and then transports it toward the back of the device. (When the third sensor S3 is ON (medium present) at the second position) In the case of the fourth medium B4, it is not transported to the front side of the device, but is transported from the second position to the rear side of the device.

[0050] The third sensor S3 transmits the detection result (ON / OFF state) to the control unit 20, and the control unit 20 determines the rear end position of medium B based on the detection result of the third sensor S3. For example, the control unit 20 determines the rear end position of medium B based on the timing of switching from the ON state to the OFF state and the number of pulses of a transport pulse motor (not shown). Then, the control unit 20 calculates the medium length LB of medium B based on the determined front end position and rear end position.

[0051] The second embodiment described above can achieve the same effect as the first embodiment. That is, medium B is transported from the first position on the insertion / ejection transport path 9a to a second position that is a predetermined distance toward the back of the device, and medium B at the second position is detected by the third sensor S3. Therefore, as shown in FIG. 6(c), even if the rear end of the sixth medium B6 overlaps with the third sensor S3 at the first position, this state can be eliminated at the second position. As a result, the sixth medium B6 can be appropriately processed.

[0052] [Variations] In each embodiment, the medium processing device 1 has been described as being a bankbook slip printer, but the present invention can be applied to any device that processes medium B, not just a bankbook slip printer.

[0053] In addition, in each embodiment, the description assumes that the trailing end position is determined by media length detection control, but the present invention can be similarly applied to any control that requires determining the trailing end position of the media, not limited to media length detection control.

[0054] In each embodiment and the above-mentioned modified example, the description is based on the assumption that the insertion port and ejection port are integrated (document insertion and ejection port 5, passbook insertion and ejection port 6), but the present invention can also be applied to a device that has separate insertion and ejection ports. In other words, the document insertion and ejection port 5 and the passbook insertion and ejection port 6 are examples of the "insertion port" and "ejection port." In each embodiment, the upper inserter unit 2a is configured to receive slips, and the lower inserter unit 2b is configured to receive passbooks, but this is not limited, and for example, the upper inserter unit 2a may be configured to receive passbooks, and the lower inserter unit 2b may be configured to receive slips. Also, the media inserted into the upper and lower inserter units are not limited to passbooks and slips, and other media may be inserted. [Explanation of symbols]

[0055] 1 Media Processing Device 1a Housing 2 Inserter Unit 2a Upper inserter part 2b Lower inserter part 3 Printing unit 4 Auto Turn Page Unit 5. Slip insertion and ejection port (insertion port, ejection port) 6 Passbook insertion and ejection slot (insertion slot, ejection slot) 7 Reading section 8 Print Head 9 Transport Path 9a Insertion / Discharge Conveyor Path (Insertion / Discharge Conveyor Path, Discharge Conveyor Path) 9b Insertion / Discharge Conveyor Path (Insertion / Discharge Conveyor Path, Discharge Conveyor Path) 10 Conveyor feed roller 11 Transport pressure roller 12 Guide section 20 Control section S Sensor B Medium

Claims

1. an insertion port into which a medium is inserted; an insertion conveying path along which the inserted medium is conveyed; a sensor disposed on the insertion conveying path for detecting the presence of the medium; A control unit that controls the transport of the medium, the control unit causes the inserted medium to be transported to a first position on the insertion transport path, and then causes the medium to be transported to a second position a predetermined distance from the first position toward the rear side of the device, and when the sensor detects the medium at the second position, causes the medium to be transported toward the rear side of the device, and when the sensor does not detect the medium at the second position, causes the medium to be transported toward the front side of the device until the sensor detects the medium, and then causes the medium to be transported toward the rear side of the device.

23. A media processing device comprising:

2. the sensor is a first sensor that detects the trailing end of the medium when calculating the medium length, a second sensor that is disposed on the inner side of the device relative to the first sensor and detects the leading edge of the medium when calculating the medium length; The control unit is First, the medium is transported to the first position where the leading end of the medium passes over the second sensor, and the leading end is detected by the second sensor; Next, the medium is transported to the second position, which is a predetermined distance from the first position toward the rear side of the device, When the first sensor detects the medium at the second position, the medium is conveyed toward the rear side of the device, and the rear end is detected by the first sensor; When the first sensor does not detect the medium at the second position, the medium is transported toward the front side of the device until the first sensor detects the medium, and then the medium is transported toward the rear side of the device, and the rear end of the medium is detected by the first sensor. The media processing device according to claim 1 .

3. the control unit does not monitor the first sensor when the medium is inserted, and starts monitoring the first sensor after the medium is transported to the first position. The media processing device according to claim 2 .

4. the sensor operates as a leading end detection sensor that detects the leading end of the medium and a trailing end detection sensor that detects the trailing end of the medium when calculating the medium length; The control unit is First, the inserted medium is transported to a first position on the insertion transport path, and the leading end of the medium is detected by the sensor; Next, the medium is transported to the second position, which is a predetermined distance from the first position toward the rear side of the device, When the sensor detects the medium at the second position, the medium is conveyed toward the rear side of the device and the rear end is detected by the sensor; If the sensor does not detect the medium at the second position, the medium is transported toward the front side of the device until the sensor detects the medium, and then the medium is transported toward the rear side of the device, and the rear end is detected by the sensor. The media processing device according to claim 1 .

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