JP2012187879A - Printing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printing apparatus that can accurately detect jamming.SOLUTION: The printing apparatus includes: a paper feed roller 208 that performs feeding and carrying back the paper; a print head 207 that prints the paper; and a cutter part that puts the notch to the printed paper to enable cutting it as a piece of paper, and exhausts the printed paper in the state where the pieces of the paper are connected from the outlet. The printing apparatus includes: a paper detection sensor 203 that detects whether the paper exists neighborhood the outlet; a paper returning prevention part that prevents returning of paper at a position forward the position where the paper detection sensor 203 detects the paper; and a control part that performs printing by the print head 207 and paper feeding by the paper feed roller 208 after a first paper returning control to control the paper feed roller 208 to return the paper, and detects paper jamming when the paper feeding amount by the paper feed roller 208 reaches a predetermined amount and the paper detection sensor 203 detects out of the paper.

Description

  The present invention relates to a printing apparatus.

  In restaurants and other restaurants, a slip output device (printing device) that prints a slip for transmitting a cooking instruction to a kitchen is used. FIG. 11 shows how the slip output device 900 prints and outputs a slip. As shown in the figure, the slip is output from the discharge port 902 of the slip output device 900 in the form of a single item slip 901 corresponding to each ordered dish. Each of the single item slips 901-1, 901-2, and 901-3 is partially cut and connected to the preceding and following single item slips. Partial cut is a method of cutting only a part (the center in the figure) without cutting and separating a single item slip completely. The store clerk cuts out the single item slip 901 from the slips connected in this way, and cooks the dish specified in the single item slip.

  The cutter for partially cutting the slip is installed inside the slip output device that is separated from the discharge port 902 by a predetermined distance (for example, about 10 mm). Therefore, as shown in FIG. 11A, the single printed slip 901-3 printed at the end is only partially discharged from the discharge port 902, and the printed content is difficult to see and difficult to grasp when cutting. ing. Therefore, by printing the last single item slip 901-3 and performing partial cut, the slip sheet is fed, so that the content of the last single item slip 901-3 can be read as shown in FIG. It is performed to come out of the discharge port 902 to a certain position. However, if the next single item slip is printed in this state, the amount of paper feed will become the margin for printing, so reducing the margin by printing after returning the paper. A printer that can be used has been proposed (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 3-92371

In general, slips that have been partially cut tend to get kinked when the paper is fed or returned, or the cut portion can easily get caught on parts in the slip output device, causing paper jams in the slip output device. Cheap.
When a paper jam occurs in the slip output device described above, the printed slip is not discharged from the discharge port. For this reason, when detecting a paper jam of a slip in the slip output device, it is conceivable to provide a reflective optical sensor or the like in the vicinity of the discharge port and detect the presence or absence of a slip in the vicinity of the discharge port after printing the slip. That is, when a slip is not detected before slip printing and a slip is not detected after printing, it is determined that a paper jam has occurred inside the slip output device.
However, after the slip is fed as shown in FIG. 11B, for example, when a restaurant is crowded and many cooking instructions are issued to the kitchen, the cook becomes busy, and the slip is output from the slip output device. There may be a situation in which the single item slip is not cut for a while and is hung from the discharge port 902. In this situation, when paper is returned and printed, it is not possible to determine whether the already discharged single item slip is not cut out and remains in the discharge port or whether a newly printed single item slip is discharged to the discharge port. . For this reason, the conventional slip output device has a problem that it is difficult to detect a paper jam.

  The present invention has been made in view of the above points, and an object thereof is to provide a printing apparatus capable of detecting a paper jam with high accuracy.

  SUMMARY An advantage of some aspects of the invention is that a sheet feeding unit that feeds and returns a sheet, a printing unit that prints on the sheet, and a small piece are cut out. And a cutter unit for cutting the printed sheet so that the printed sheet is discharged in a state in which small pieces are connected from the discharge port, in the paper feeding direction of the sheet. A sensor for detecting whether or not the sheet is present at a position in front of a position where the cutter unit cuts into the printed sheet and a position behind the discharge port; and the sensor in the sheet feeding direction of the sheet After the first paper return control for controlling the non-returning portion for preventing the paper from returning and the paper feeding portion for returning the paper at a position in front of the position where the paper is detected, the printing is performed. And a control unit that detects paper jam when the sensor detects the absence of paper when the paper feed amount by the paper feed unit reaches a predetermined amount. This is a printing apparatus.

  Further, according to one aspect of the present invention, in the above-described printing apparatus, when the control unit detects the presence of paper when the first paper return control is performed, printing by the printing unit and paper feeding are performed. The paper feeding unit performs paper feeding by a unit, and after the cutter unit has made a cut into the paper, the paper is fed so that the position of the cut is in front of the check part, and then the paper is returned to the paper. The second paper return control is performed to control.

  In one embodiment of the present invention, in the above-described printing apparatus, the control unit detects the paper by the sensor every time the second paper return control is performed, and the sensor continuously detects the paper more than a predetermined threshold. A paper jam is detected when the presence is detected.

  According to another aspect of the present invention, in the above-described printing apparatus, when the sensor detects the presence of paper when the second paper return control is performed, the control unit detects the amount of paper that has been returned. The paper feeding unit is controlled to feed and return the paper again.

  Further, according to one aspect of the present invention, in the above-described printing apparatus, the non-return portion may be configured to hook the small piece of the paper outside the discharge port when the paper is returned, thereby discharging the paper. The paper outside the exit is prevented from returning, and the control unit controls the paper feeding unit to return the paper by a predetermined distance and immediately after the sensor detects no paper, the paper is not jammed. It is characterized by determining.

  Another embodiment of the present invention is a paper feeding unit that feeds and returns paper, a printing unit that prints on the paper, and a cutter that cuts the printed paper so that it can be cut out as a small piece. A printing device that discharges printed paper in a state in which small pieces are connected from a discharge port, wherein the cutter portion cuts the printed paper in the paper feeding direction of the paper A sensor for detecting whether or not the sheet is present at a position further forward and rearward from the discharge port; and a position in front of the position at which the sensor detects the sheet in the sheet feeding direction of the sheet, When the paper is returned, a non-return portion for preventing paper return of the paper outside the discharge port by hooking a small piece of the paper outside the discharge port; A control unit that determines that the paper is not jammed when the sensor detects that there is no paper immediately after controlling the paper feeding unit to return the paper printed without paper jam until a predetermined distance is reached. It is a printing apparatus characterized by comprising.

  According to the present invention, since the check portion is provided in front of the position where the sensor detects the paper, even if the printed paper discharged from the discharge port remains without being cut out, the paper is returned. When the (back feed) processing is performed, the discharged paper does not return to the position where the sensor detects the paper. That is, the sensor does not detect paper that has already been discharged from the discharge port. As a result, the sensor can detect only newly printed paper, and by using this mechanism, it is possible to accurately detect a paper jam during paper printing.

1 is a configuration diagram of an order management system to which a slip output apparatus according to an embodiment of the present invention is applied. It is a perspective view which shows the external appearance structure of the slip output apparatus by this embodiment. It is the schematic which shows the positional relationship of the paper detection sensor and roll paper non-return by this embodiment. It is a figure which shows an example of the slip which the slip output device by this embodiment prints and outputs. It is sectional drawing which shows a part of internal structure of the slip output apparatus by this embodiment. It is a block diagram which shows the electrical structure of the slip output apparatus by this embodiment. It is the schematic which shows a mode that the slip output device by this embodiment printed the slip. It is the schematic which shows the state of the roll paper in the discharge port of the slip output apparatus by this embodiment. 5 is a flowchart illustrating a procedure of slip output processing according to the first embodiment. It is a flowchart which shows the procedure of the slip | voice output process by Example 2. It is a figure which shows a mode that the conventional slip output apparatus printed and output the slip.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a configuration diagram of an order management system to which a slip output apparatus 2 according to an embodiment of the present invention is applied. This order management system includes an order management device 1, a transfer order input device 3, and a slip output device (printing device) 2. For example, the order management system is introduced and used in a restaurant such as a restaurant.
In FIG. 1, one slip output device 2 and one order input device 3 are shown, but a plurality of devices are appropriately installed according to the restaurant where the order management system is installed and operated. It is also possible to do.
Further, a relay device (not shown) may be prepared according to the scale of the restaurant, and the communication between the order management device 1 and the slip output device 2 or the order input device 3 may be relayed.

  The order input device 3 is a portable terminal device used by a store clerk to input an order. The order input device 3 includes an input function for inputting an order, a display function for displaying the input content, and order data. It has a transmission function to transmit. The order data includes a table No. described later. And responsible No. And data such as the name and quantity of the ordered food. When the clerk inputs an order, the order input device 3 generates order data and transmits the generated order data to the order management device 1 wirelessly.

  The order management device 1 is a server device that manages restaurant orders. The order management device 1 receives the order data transmitted from the transmission order input device 3, and stores the received order data. The order management device 1 stores output setting data in advance, generates slip data from the order data using the output setting data, and transmits the generated slip data to the slip output device 2 wirelessly or by wire. To do.

The slip output device 2 is a printer that prints a slip for transmitting a cooking instruction to the kitchen. The slip output device 2 receives the slip data transmitted from the order management device 1 and prints the slip based on the received slip data.
In addition, the slip output device 2 prints a customer slip that is handed over to customers who come to the restaurant at the time of serving food and brought at the time of accounting.

FIG. 2 is a perspective view showing an external configuration of the slip output apparatus 2 according to the present embodiment.
As shown in the figure, the slip output device 2 includes a front door 201 and a paper jam notification unit 202 on the front, and a discharge port 210 for discharging the slip is provided above the front door 201. The paper jam notification unit 202 includes, for example, an LED (Light Emitting Diode) or the like, and notifies the paper jam in the slip output device 2 by blinking. The front door is a door that can be opened and closed.

FIG. 3 is a schematic diagram showing the positional relationship between the paper detection sensor 203 and the roll paper check 204 according to the present embodiment.
The slip output device 2 includes a paper detection sensor 203 above the discharge port 210. The paper detection sensor 203 is a sensor that detects whether or not a slip (paper) is present at a point X (a position at which the sensor detects paper) of the front door 201 that forms the discharge port 210. It is an optical sensor or a reflective optical sensor. This point X is in the vicinity of the discharge opening 210 and is a position in front of the position where the slip is partially cut and behind the discharge opening 210 in the paper feed direction of the slip. The paper detection sensor 203 is not limited to this as long as it can detect whether or not a slip sheet is present, and may be a CCD (Charge Coupled Device) camera, for example.
A hook-shaped roll paper non-return (non-return part) 204 is provided in front of the X point at the top of the front door 201. The roll paper check 204 is such that when the slip remains in the discharge opening 210, the partially cut portion of the discharged slip is caught under the nail when the slip is returned for printing. Configured to prevent the slip of the slip in front of the point X. That is, the roll paper check 204 prevents the slip of the slip outside the discharge port 210 from returning by hooking the single slip located outside the discharge port 210 when the slip (paper) is returned. Here, the paper feed direction L0 of the slip is defined as the front, and the reverse direction (paper return direction) L1 of the paper feed direction L0 is defined as the rear. The paper feeding direction L0 is a direction in which a slip is printed and fed to the discharge port 210.

  FIG. 4 is a diagram illustrating an example of a slip that is printed out and output by the slip output device 2 according to the present embodiment. In this example, the slip is configured as a set of three single item slips, that is, a single item slip TD1, a single item slip TD2, and a single item slip TD3. A single item slip is a small piece of a slip corresponding to each ordered dish. Each single slip has a slip No. based on the slip data. And table no. And responsible No. And time are printed. In addition, the name and quantity of the ordered food are printed on each single item slip. Furthermore, a partial cut is applied between the single item slip TD1 and the single item slip TD2 and between the single item slip TD2 and the single item slip TD3 (the portion between each single slip is cut leaving only a part of the center. ) Hereinafter, the part where the partial cut between the single item slip TD1 and the next single item slip TD2 is performed is referred to as a cut portion CT of the single item slip TD1.

FIG. 5 is a sectional view showing a part of the internal structure of the slip output device 2 according to the present embodiment.
Inside the slip output device 2, a paper detection sensor 203, a roll paper check 204, a cutter movable blade 205, a fixed blade 206, a print head 207, a paper feed roller 208, and a paper break detection sensor 209 are provided. Is provided.

  The paper feed roller 208 is a mechanical component that feeds and returns the roll paper R. Specifically, the roll paper R is held between the paper feed roller 208 and the print head 207, and the roll paper R is fed or returned by rotating the paper feed roller 208. Note that the paper feeding in the present embodiment is to feed the roll paper R in the paper feeding direction L0, and the paper return is to feed the roll paper R in the paper returning direction L1.

The print head 207 is a component that performs printing on the roll paper R. In the present embodiment, thermal paper that changes color when heat is applied is used as the roll paper R, and a heating type print head that performs printing by applying heat to the roll paper R is applied as the print head 207. .
The out-of-paper detection sensor 209 is a sensor that detects whether or not the roll paper R has run out, and is provided in the vicinity of the print head 207.

The cutter movable blade 205 and the fixed blade 206 are cutter units that cut (partial cut) the rolled paper R (slip) printed so as to be cut out as small pieces. The cutter movable blade 205 is movable in the vertical direction in the figure. When the cutter movable blade 205 moves downward and the roll paper R is sandwiched between the fixed blade 206 and the cutter movable blade 205, the roll paper R Is partially cut to form a slip.
The discharge port 210 is an opening through which a partially cut slip (printed paper) that is partially cut (in a state where small pieces are connected) is discharged.

Further, a paper detection sensor 203 is provided in the vicinity of the discharge port 210 (inside the discharge port 210). The paper detection sensor 203 is a sensor that detects whether a slip exists at the point X. Further, a roll paper check 204 is provided in front of the point X to prevent the single item slip from returning backward.
Further, the point B shown in this figure is a position ahead of the end of the hook-shaped pawl of the roll paper check 204. The point C is a position behind the point X and ahead of the cut position. The cutting position is a position where the cutter movable blade 205 and the fixed blade 206 partially cut the roll paper R in the slip output device 2.

  FIG. 6 is a block diagram showing an electrical configuration of the slip output apparatus 2 according to the present embodiment. The slip output device 2 includes a control device 200 that controls the slip output device 2 in an integrated manner. The control device 200 includes a communication processing unit 21, a data storage unit 22, a print / cutter control unit 23, a roll paper detection unit 24, and a control unit 25.

The communication processing unit 21 receives the slip data transmitted from the order management apparatus 1.
The data storage unit 22 stores the slip data received by the communication processing unit 21. The data storage unit 22 stores in advance a threshold value n for the control unit 25 to perform a paper jam determination described later. The threshold value n is a preset value. The threshold value n can be input from an operation unit (not shown) and stored in the storage unit 22.
The print / cutter control unit 23 controls the print head 207 and the paper feed roller 208 to print a slip. Further, the printing / cutter control unit 23 controls the cutter movable blade 205 and the paper feed roller 208 to perform partial cutting of the slip.
The roll paper detection unit 24 controls the paper detection sensor 203 and the paper breakage detection sensor 209 and receives detection signals from the paper detection sensor 203 and the paper breakage detection sensor 209.

  Based on the slip data stored in the data storage unit 22, the control unit 25 instructs the print / cutter control unit 23 to print a slip and a partial cut of the slip. The control unit 25 detects a paper jam based on the detection result of the paper detection sensor 203 in the roll paper detection unit 24. Details of the paper jam detection process will be described later.

FIG. 7 is a schematic diagram illustrating a state in which the slip output apparatus 2 according to the present embodiment prints a slip.
FIG. 7A shows a state in which after the unit slip TD3 is printed, the cut portion CT of the single slip TD3 is controlled to be returned to the point C (hereinafter referred to as back feed). The print / cutter controller 23 determines the position of the cut portion CT based on the rotation amount of the paper feed roller 208. The rotation amount of the paper feed roller 208 is calculated from the number of execution steps of the paper feed roller 208, for example. In this state, the cut portion CT of the single item slip TD3 is caught by the roll paper check 204, and the unit slip TD3 is maintained in front of the roll paper check 204. Thereby, since the gap of the cut part CT is made at the point X, the paper detection sensor 203 does not detect the roll paper R (detects no roll paper R). That is, the paper detection sensor 203 does not detect a slip that has already been discharged from the discharge port 210 even when the roll paper R is back-fed.
FIG. 7B shows a state where printing of the next slip is started from the state shown in FIG. In this state, since the next slip is fed to the point X, the paper detection sensor 203 detects the roll paper R (detects the presence of the roll paper R).

Next, a paper jam detection process performed by the slip output device 2 will be described with reference to FIG. FIG. 8 is a schematic diagram showing the state of the roll paper R in the vicinity of the discharge port 210 of the slip output device 2 according to the present embodiment.
FIG. 8A shows the state of the roll paper R before slip printing. In this state, since there is no slip at point X, the paper detection sensor 203 detects the absence of roll paper R.
FIG. 8B shows a state where printing of the single item slip TD1 is started from the state shown in FIG. In this state, since the newly printed single item slip TD1 is fed to the point X, the paper detection sensor 203 detects the presence of the roll paper R.
FIG. 8C shows a state when the printed single item slip TD1 is partially cut. In this state, since the printed single item slip TD1 exists at the point X, the paper detection sensor 203 detects the presence of the roll paper R.

FIG. 8D shows a state where the cut portion CT of the single item slip TD1 is fed to the point B. In this state, since the roll paper R behind the single item slip TD1 is fed to the point X, the paper detection sensor 203 detects the presence of the roll paper R.
FIG. 8 (e) shows a state in which control is performed to back-feed the cut portion CT of the single item slip TD1 to the point C from the state shown in FIG. 8 (d). In FIG. 8D, the single item slip TD1 is in a state of being lowered below the claw of the roll paper check 204 due to gravity. For this reason, when the single item slip TD1 is back-fed from the state shown in FIG. 8D, the cut portion CT of the single item slip TD1 is caught by the roll paper check 204, and a gap is formed at the point X. Therefore, in this state, the paper detection sensor 203 detects the absence of the roll paper R.

FIG. 8F shows a state where the roll paper R is jammed in the vicinity of the discharge port 210 when there is no slip ahead of the roll paper check 204. In this state, since there is no slip at point X, the paper detection sensor 203 detects the absence of roll paper R.
FIG. 8G shows a state in which the roll paper R is jammed in the vicinity of the discharge port 210 when the cut portion CT of the single-item slip TD1 that has already been discharged is caught by the roll paper check 204. In this state, the cut portion CT of the single-item slip TD1 is caught by the roll paper check 204, and a gap is formed at the point X. Therefore, the paper detection sensor 203 detects the absence of the roll paper R. In other words, even when the already discharged single item slip has been cut out or when the already discharged single item slip remains without being cut out, the paper detection sensor 203 causes the roll paper to be detected when a paper jam occurs. No R is detected.
FIG. 8H shows a state where the roll paper R is jammed in the vicinity of the discharge port 210 without the cut portion CT of the already printed single-item slip TD1 being caught by the roll paper check 204. FIG. In this state, since the single item slip TD1 exists at the point X, the paper detection sensor 203 detects the presence of the roll paper R.

Hereinafter, a case where the slip data D1 is printed in a situation where the single slip TD0 of the slip data D0 has already been printed and is not cut off and remains hanging from the discharge port 210 (see FIG. 8D) will be described. The paper jam detection process will be described. The slip data D1 includes a single item slip TD1, a single item slip TD2, and a single item slip TD3.
First, the print / cutter controller 23 controls the paper feed roller 208 to back-feed the paper so that the cut part CT of the single-item slip TD0 is at the point C (see FIG. 8E). Then, the printing / cutter control unit 23 starts printing the slip data D1. The printing process is to print the slip data on the roll paper R and feed the roll paper R. When the paper feed amount by the printing process reaches a predetermined amount, the roll paper detection unit 24 detects the presence or absence of the roll paper R at the point X by the paper detection sensor 203. This predetermined amount is, for example, the paper feed amount until the cut part CT of the single item slip TD0 reaches the point B. At this time, the control unit 25 detects a paper jam when the roll paper detection unit 24 detects the absence of the roll paper R (determined that the roll paper R that should be is jammed behind the point B. FIG. g)). When the control unit 25 detects a paper jam, the control unit 25 notifies the paper jam by blinking the paper jam notification unit 202. On the other hand, when the roll paper detection unit 24 detects the presence of the roll paper R, the control unit 25 determines that there is no paper jam and continues the printing process of the slip data D1.

  As described above, according to this embodiment, the roll paper check 204 is provided in front of the paper detection sensor 203, so that the roll paper R is removed when the slip discharged from the discharge port 210 remains without being cut off. Even when backfeeding is performed, the discharged slip does not return to the position X where the paper detection sensor 203 detects the slip. That is, the paper detection sensor 203 does not detect a slip that has already been discharged from the discharge port 210. As a result, the paper detection sensor 203 can detect only a newly printed slip, and therefore can detect a paper jam with high accuracy.

  Further, when the cut portion CT of the single item slip TD0 is back-fed to the point C, the cut portion CT is not caught by the roll paper check 204, and the paper detection sensor 203 detects the presence of the roll paper R (FIG. 8B). ) And (c)), the printing / cutter control unit 23 starts printing the slip data D1. When the single item slip TD1 of the slip data D1 is partially cut and the cut part CT of the single item slip TD1 is fed to the point B, the printing / cutter control unit 23 moves the cut part CT of the single item slip TD1 to the point C. The paper feed roller 208 is controlled so as to perform the back feed (see FIG. 8E). As a result, if the cut portion CT of the single-item slip TD1 is caught by the roll paper check 204, it can be determined that the roll paper R has been normally printed (no paper jam), and the subsequent printing is the same as described above. In addition, the paper detection sensor 203 can detect a paper jam.

  Here, when the cut portion CT of the single-item slip TD1 is controlled to be fed back to the point C, the cut portion CT is not caught by the roll paper check 204, and the paper detection sensor 203 detects the presence of the roll paper R. There is a possibility that a paper jam has occurred due to the state of FIG. Therefore, in this case, the control unit 25 repeats paper feed and back feed of the roll paper R, and counts the number of times the paper detection sensor 203 detects the presence of the roll paper R during back feed. And the control part 25 detects a paper jam, when the frequency | count counted becomes more than the threshold value n (refer FIG.8 (h)). Thereby, even when a paper jam occurs due to the state of FIG. 8H, the paper jam can be detected.

  Hereinafter, specific operations of the slip output apparatus 2 according to the present embodiment will be described with reference to examples.

FIG. 9 is a flowchart showing the procedure of the slip output process according to the present embodiment.
Here, a case where slip data D1 (including single product slip TD1, single product slip TD2, and single product slip TD3) is printed after printing slip data D0 (including single product slip TD0) will be described as an example.
First, the control unit 25 determines whether or not the cut part CT of the single item slip TD0 is fed to the point B after the partial cut of the single item slip TD0 of the slip data D0. (Step S101). Specifically, the printing / cutter control unit 23 determines the position of the cut portion CT of the single item slip TD0 based on the rotation amount of the paper feed roller 208, and the control unit 25 determines the position of the cut portion CT of the single item slip TD0. Output to. Based on the input position of the cut part CT, the control unit 25 determines whether or not the cut part CT of the single item slip TD0 has been fed to the point B.
If the cut portion CT of the single item slip TD0 is not fed to the point B (step S101: No), the process proceeds to step S103. On the other hand, when the cut portion CT of the single item slip TD0 is fed to the point B (step S101: Yes) (see FIG. 8D), the printing / cutter control unit 23 causes the cut portion of the single item slip TD0 to be cut. The paper feed roller 208 is controlled so as to back-feed the CT to the point C (step S102) (see FIG. 8E).

Next, the roll paper detection unit 24 detects the presence or absence of the roll paper R at the point X by the paper detection sensor 203 (step S103). When there is no roll paper R at the point X (see FIGS. 8A and 8E), the control unit 25 sets the paper detection counter to “0” (step S104). That is, when the paper detection sensor 203 detects the absence of the roll paper R immediately after back feeding the slip for a predetermined distance, the control unit 25 determines that the slip is printed normally (no paper jam).
Next, the print / cutter controller 23 prints the slip data D1 (step S105). Then, the control unit 25 determines whether or not all the single item slips TD1 to TD3 of the slip data D1 have been printed (step S106). When all the single item slips TD1 to TD3 of the slip data D1 are printed (step S106: Yes), the process proceeds to step S111.

On the other hand, when all the unit slips TD1 to TD3 of the slip data D1 are not printed (step S106: No), the control unit 25 cuts the CT of the single slip TD0 based on the rotation amount of the paper feed roller 208. It is determined whether or not the paper has been fed to the point B (step S107). If the cut portion CT of the single item slip TD0 is not fed to the point B (step S107: No), the process returns to step S105.
On the other hand, when the cut portion CT of the single item slip TD0 is fed to the point B (step S107: Yes), the roll paper detection unit 24 detects the presence or absence of the roll paper R at the point X by the paper detection sensor 203. (Step S108). When there is no roll paper R at the point X, the roll paper R that should have been printed cannot be detected, so it is determined that the paper jam has occurred (see FIGS. 8F and 8G).

On the other hand, when the roll paper R exists at the point X (see FIG. 8B), the slip data D1 is printed and the roll paper R is partially cut (step S109). Then, the control unit 25 determines whether or not all the single item slips TD1 to TD3 of the slip data D1 have been printed (step S110).
If all the unit slips TD1 to TD3 of the slip data D1 are not printed (step S110: No), the process returns to step S109. On the other hand, when all the single-item slips TD1 to TD3 of the slip data D1 are printed (step S110: Yes) (see FIG. 8C), the cut portion CT of the last single-item slip TD3 in the slip data D1 is up to point B. The paper is fed, and the slip output process in the slip data D1 is completed (step S111) (see FIG. 8D).

On the other hand, if the roll paper R is present at the point X in step S103 described above, the printing / cutter control unit 23 performs the printing process of the slip data D1 (step S113). Then, the control unit 25 determines whether or not all the single item slips TD1 to TD3 of the slip data D1 have been printed (step S114).
When all the single item slips TD1 to TD3 of the slip data D1 are printed (step S114: Yes), the process proceeds to step S111.

On the other hand, when all the unit slips TD1 to TD3 of the slip data D1 are not printed (step S114: No), the control unit 25 cuts the CT portion of the single slip TD1 based on the rotation amount of the paper feed roller 208. It is determined whether or not the paper has been fed to the cut position (step S115).
When the cut portion CT of the single item slip TD1 is not fed to the cut position (step S115: No), the process returns to step S113. On the other hand, when the cut portion CT of the single-item slip TD1 is fed to the cut position (step S115: Yes), the printing / cutter control unit 23 drives the movable cutter blade 205 to partially cut the roll paper R. (Step S116). Then, the print / cutter control unit 23 continues to print the slip data D1 (step S117).

Then, the control unit 25 determines whether or not all the single item slips TD1 to TD3 of the slip data D1 have been printed (step S118). When all the single item slips TD1 to TD3 of the slip data D1 are printed (step S118: Yes), the process proceeds to step S111. On the other hand, when all the unit slips TD1 to TD3 of the slip data D1 are not printed (step S118: No), the control unit 25 cuts the CT portion of the single slip TD1 based on the rotation amount of the paper feed roller 208. It is determined whether or not the paper has been fed to the point B (step S119).
If the cut portion CT of the single item slip TD1 is not fed to the point B (step S119: No), the process returns to step S117. On the other hand, when the cut portion CT of the single item slip TD1 is fed to the point B (step S119: Yes), the printing / cutter control unit 23 back-feeds the cut portion CT of the single item slip TD1 to the point C. The paper feed roller 208 is controlled (step S120). Then, the roll paper detection unit 24 detects the presence or absence of the roll paper R at the point X by the paper detection sensor 203 (step S121).
When there is no roll paper R at the X point (see FIG. 8E), the printing / cutter control unit 23 feeds the cut portion CT of the single-item slip TD1 to the B point (step S112), and step S104. Migrate to That is, when the paper detection sensor 203 detects that there is no roll paper R immediately after backfeeding the slip for a predetermined distance, the control unit 25 prints the roll paper at the point X in step S103 without paper jam, It is determined that the slip is normally printed by the subsequent printing process (no paper jam).

  On the other hand, when the roll paper R is present at the point X (there is the possibility of FIG. 8H), the control unit 25 adds 1 to the paper detection counter (step S122). And the control part 25 determines whether a paper detection counter is more than the threshold value n (step S123). If the paper detection counter is greater than or equal to the threshold value n, it is determined that a paper jam has occurred (FIG. 8 (h)). On the other hand, if the paper detection counter is less than the threshold value n, the process returns to step S113.

The roll paper detection unit 24 detects the presence or absence of the roll paper R by the paper breakage detection sensor 209 during the printing process (for example, steps S105, S109, S113, and S117), and the detection result is sent to the control unit 25. Output. The control unit 25 detects a roll of the roll paper R based on the detection result by the paper break detection sensor 209. When the roll paper R runs out, the control unit 25 interrupts the printing process and waits until the roll paper R is replaced.
When the roll paper R is replaced, the printing / cutter control unit 23 feeds the roll paper R by a certain amount and performs partial cutting. Then, the control unit 25 sets the paper detection counter to “0”. That is, when a paper break occurs, the control unit 25 initializes the paper detection counter to “0”.

As described above, according to this embodiment, even when the slip discharged from the discharge port 210 remains without being cut out, the discharged slip does not return to the X point at the time of back feed. As a result, the paper detection sensor 203 can detect only a newly printed slip, and therefore can detect a paper jam with high accuracy.
Even when there is paper at the point X, it is possible to recognize the possibility that a paper jam has occurred by appropriately setting the threshold value n of the paper jam counter.

Next, another example 2 of this embodiment will be described.
FIG. 10 is a flowchart showing the procedure of the slip output process according to the present embodiment.
The processing from S201 to S223 shown in this figure is the same as the processing from S101 to S123 in FIG.
In this embodiment, if the paper detection counter is less than the threshold value n in step S223, the printing / cutter control unit 23 feeds the cut portion CT of the single item slip TD1 to the point B (step S224). The process returns to step S220. That is, the presence of the roll paper R at the point X is detected by repeating the paper feed and the back feed.

  As described above, in this embodiment, when the paper detection sensor 203 detects the presence of the roll paper R at the time of back feed, since the printing process is not performed, when a paper jam as shown in FIG. A paper jam can be detected earlier than in the first embodiment.

Further, the slip output process may be performed by recording a program for realizing each step shown in FIG. 9 or 10 on a computer-readable recording medium. Here, the “computer system” may include an OS and hardware such as peripheral devices.
The “computer-readable recording medium” means a flexible disk, a magneto-optical disk, a ROM, a writable nonvolatile memory such as a flash memory, a portable medium such as a CD-ROM, a hard disk built in a computer system, etc. This is a storage device.

Further, the “computer-readable recording medium” refers to a volatile memory (for example, DRAM (Dynamic) in a computer system serving as a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. Random Access Memory)) that holds a program for a certain period of time is also included.
The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.
The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.

As described above, the embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to the above, and various design changes and the like can be made without departing from the scope of the present invention. It is possible to
For example, in this embodiment, the non-return portion is the roll paper non-return 204, but when back-feeding is performed using a material such as a brush whose friction in the paper return direction L1 is greater than that in the paper feed direction L0, A gap may be formed between the slip and the single slip.

  DESCRIPTION OF SYMBOLS 1 ... Order management apparatus 2 ... Voucher output apparatus 3 ... Order input apparatus 21 ... Communication processing part 22 ... Data storage part 23 ... Printing / cutter control part 24 ... Roll paper detection part 25 ... Control part 200 ... Control apparatus 201 ... Front door 202: Paper jam notification unit 203 ... Paper detection sensor 203 ... Roll paper reverse check 205 ... Cutter movable blade 206 ... Fixed blade 207 ... Print head 208 ... Paper feed roller 209 ... Paper out sensor 210 ... Discharge port

Claims (6)

A paper feed section for feeding and returning paper, and
A printing section for printing on the paper;
A cutter unit for cutting the printed paper so that it can be cut as a small piece;
A printing apparatus for discharging printed paper in a state where small pieces are connected from a discharge port,
A sensor that detects whether or not the sheet is present at a position in front of the cut portion of the printed sheet and a position behind the discharge port in the paper feeding direction of the sheet;
In the paper feeding direction of the paper, at a position in front of the position where the sensor detects the paper, a check portion for preventing the paper from returning,
After performing the first paper return control for controlling the paper feed unit to return the paper, printing by the printing unit and paper feed by the paper feed unit are performed, and a paper feed amount by the paper feed unit is determined. A control unit that detects a paper jam when the sensor detects no paper when the quantity is reached;
A printing apparatus comprising: The control unit performs printing by the printing unit and paper feeding by the paper feeding unit when the sensor detects the presence of paper when performing the first paper return control, and the cutter unit cuts into the paper. A second paper return control is performed to control the paper feed unit so that the paper is returned after the paper is fed so that the position of the cut is in front of the non-return portion. The printing apparatus according to claim 1. The control unit detects the paper by the sensor for each second paper return control, and detects a paper jam when the sensor detects the presence of paper continuously for a predetermined threshold or more. The printing apparatus according to claim 2. If the sensor detects the presence of paper when performing the second paper return control, the control unit feeds the paper by the amount that the paper has been returned, and refeeds the paper again. The printing apparatus according to claim 3, wherein the printing apparatus is controlled. The non-return portion prevents the paper outside the discharge port from returning by hooking a small piece of the paper outside the discharge port when the paper is returned.
The control unit determines that there is no paper jam when the sensor detects no paper immediately after controlling the paper feeding unit to return the paper by a predetermined distance. 5. The printing apparatus according to any one of the above. A paper feed section for feeding and returning paper, and
A printing section for printing on the paper;
A cutter unit for cutting the printed paper so that it can be cut as a small piece;
A printing apparatus for discharging printed paper in a state where small pieces are connected from a discharge port,
A sensor that detects whether or not the sheet is present at a position in front of the cut portion of the printed sheet and a position behind the discharge port in the paper feeding direction of the sheet;
The sensor is provided at a position in front of the position where the sensor detects the paper in the paper feed direction, and when the paper is returned, the small piece of the paper outside the discharge port is hooked. A non-return portion for preventing the paper from returning from the discharge port;
Immediately after controlling the paper feed unit to return the paper printed without paper jam until a predetermined distance until it reaches the outside of the discharge port, it is determined that there is no paper jam when the sensor detects no paper. And a control unit.

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