JP2013212678A - Paper discharge mechanism and printer apparatus using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper discharge mechanism that can secure a space to keep the paper in loop without upsizing and a printer apparatus.SOLUTION: A paper discharge mechanism is provided with a paper guide 22 that makes paper 11b cut by a cutter device 13 after drawn out from a roll paper 11, and is printed by a printer 12, contact to an outer peripheral surface of a feed roller 21 and guides the paper 11b along with the rotation; and a pressing member to make the paper 11b pressure contact the outer peripheral surface of feed roller 21. A control part positively rotates a feed roller 21 for the set up carrying distance before cutting the paper by the cutter device 13 and stops it. In addition, in order to form a space for loop divergent to a bottom surface side for a conveyance path reaching to a feed roller 21 from a cutter device 13, there are provided: a first guide member 311 to communicate to a low end part of the space for the loop and an extension space that also forms the extension space along the bottom surface; and a second guide member 312 that inclines to form an obtuse angle to the bottom surface that forms the extension space.

Description

  Embodiments described herein relate generally to a paper discharge mechanism that discharges a paper that has been drawn from a roll paper, printed, and cut from a predetermined discharge unit, and a printer apparatus using the paper discharge mechanism.

  In printer devices used for issuing receipts, tickets, etc., after printing predetermined items on long paper drawn from roll paper, it is cut to a length corresponding to the printed part and discharged from a predetermined discharge unit. ing.

  In this case, there is a possibility that the sheet recipient may interfere with the sheet discharge by grasping the sheet to be discharged or holding the discharge unit by hand. As a measure to avoid such an unpredictable jam, a measure is taken to store the paper to be discharged inside the discharge section until the printing and cutting of the paper is completed, and discharge it to the recipient side after the paper is cut. It has been.

  If the printed paper is stored in the device until it is cut to a predetermined length in this way, storing the printed paper in a straight line will require a large storage space, and the device will be enlarged. A paper having a storage space reduced by curving a used paper in a loop shape inside the apparatus has been proposed.

JP-A-8-169149 JP-A-11-123850

  In the above-described apparatus, a loop is formed by conveying a sheet, and a space for temporarily storing the released sheet is required. In addition, since a space for reliably looping is required at the initial stage of loop formation, a relatively large space must be secured in the apparatus. Furthermore, when the printing target is a receipt, the printed receipt may be long depending on the shopping amount.

  Until now, the force to loop the printed paper used gravity, and the paper was slacked by its own weight, so the space for loop formation was perpendicular to the paper transport direction. Was formed. For this reason, in order to loop a long sheet of paper like a receipt and temporarily store it in the looped state, a space with a large vertical dimension is required.

  However, the height dimension of such a device is naturally limited, and in order to secure a space with a large vertical dimension, for example, an opening must be opened on the installation surface of the table on which the device is mounted. In practice, it is necessary to take measures that are difficult to adopt. Therefore, although it is more compact than the one that stores paper without a loop, there is a limit to downsizing the apparatus, and it has been difficult to reduce the size sufficiently.

  An object of the present invention is to provide a paper discharge mechanism that can secure a large space for storing paper in a loop shape without enlarging the entire apparatus, and a printer apparatus using the same.

  A paper discharge mechanism according to an embodiment of the present invention is a paper discharge mechanism that discharges a paper cut out by a cutter device after being drawn from a roll paper and printed by a printing device from a predetermined discharge unit, A feed roller that conveys the paper fed from the printing device in the discharging direction by forward rotation, a front end of the paper is brought into contact with an outer peripheral surface of the feed roller, and the paper is caused to rotate along with the rotation of the feed roller. A paper guide that guides along the outer peripheral surface of the feed roller, a pressure member that is provided on the paper guide and presses the paper against the outer peripheral surface of the feed roller, and before the paper is cut by the cutter device, the feed A controller that rotates the roller forward by a predetermined conveyance distance and stops it, and the cutter device leads to the feed roller. A first guide member for forming a loop space branched to the bottom surface side with respect to the paper conveyance path, and a second guide member facing the first guide member, wherein the first guide member includes the loop space. The second guide member is inclined at an angle that forms an obtuse angle with the bottom surface that forms the extension space.

  A sheet discharge mechanism according to another embodiment of the present invention includes a feed roller that has an outer peripheral surface disposed at a position that blocks a conveyance path of the sheet fed from the printing apparatus, and that conveys the sheet in a discharge direction by forward rotation. A paper guide that abuts the front end of the paper on the outer peripheral surface of the feed roller and guides the paper along the outer peripheral surface of the feed roller as the feed roller rotates, and is provided on the paper guide. A pressure member that presses the paper against the outer peripheral surface of the feed roller; and before cutting the paper by the cutter, the feed roller is configured to prevent the leading end of the paper that is in contact with the outer surface from protruding from the discharge portion. And a controller that rotates the feed roller forward by the transport distance and reversely rotates the feed roller by a preset second transport distance after the forward rotation. And features.

1 is a main part configuration diagram of a printer apparatus according to an embodiment of the present invention; FIG. FIG. 2 is a main part configuration diagram illustrating a sheet accommodation function of the printer apparatus illustrated in FIG. 1. It is explanatory drawing of the state which conveys a sheet | seat with the feed roller in one embodiment of this invention, a paper guide, and a pressurizing member. FIG. 3 is a block diagram illustrating a control circuit configuration of a printer device according to an embodiment of the present invention. It is a figure explaining embodiment using a pinch roller as a pressurization member. It is a principal part block diagram of the printer apparatus which concerns on other embodiment of this invention. It is a figure explaining the loop formation state in the space for loops of the printer apparatus which concerns on other embodiment of this invention. It is a figure explaining the loop formation state in the extension part of the printer apparatus which concerns on other embodiment of this invention. It is a figure explaining the loop formation state at the time of removing the edge part cover in the extension part of the printer apparatus which concerns on other embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a configuration of a main part of a printer device integrated with a paper discharge mechanism. The printer device 10 includes a roll paper 11 obtained by winding a long paper in a roll shape. The printer 11 performs printing on the paper 11a that is unwound from the roll paper 11 and pulled out. The sheet is cut by the cutter device 13 and discharged from the predetermined discharge portion 15 by the paper discharge mechanism 14.

  In the roll paper 11, a cylindrical core 16 provided at the center thereof is rotatably supported by a frame 10a of the apparatus main body so that the long paper 11a can be drawn rightward in the drawing by the rotation. It is configured. The printing device 12 includes a print head 17 and a platen 18 disposed to face the print head 17, and performs predetermined printing on the paper 11 a drawn from the roll paper 11. In this embodiment, the platen 18 also serves as a transport roller that pulls out and transports the paper 11a from the roll paper 11, and although not shown, a motor as drive means is connected via a gear mechanism.

  The cutter device 13 is provided at the exit portion of the printing device 12, and cuts the printed paper 11a into a length corresponding to the printing portion to form a receipt or a ticket. The cutter device 13 has cutter blades 13a and 13b that relatively move forward and backward in the cutter case 131, and the printed paper 11a passing between the cutter blades 13a and 13b is moved by the relative forward and backward motion. Disconnect. The cutter blades 13a and 13b are advanced and retracted by driving means such as a motor (not shown).

  The paper discharge mechanism 14 includes a feed roller 21, a paper guide 22, and a guide member 31. The feed roller 21 is driven so as to be reversibly rotated by a motor (not shown), and has an outer peripheral surface disposed at a position that closes the conveyance path of the paper 11a fed from the printing device 12 and passed between the cutter blades 13a and 13b. Yes. The paper guide 22 has a flat first guide portion 22a and a second guide portion 22b formed in an arc shape. The first guide portion 22a guides the front end of the paper 11a that has passed between the cutter blades 13a and 13b to abut the outer peripheral surface of the feed roller 21 by the inclined lower surface. The second guide portion 22b is integrally formed continuously with the rear end (the right end in the drawing) of the first guide portion 22a, and the arc-shaped inner surface covers the upper outer periphery of the feed roller 21 with a space therebetween, 11a is guided along the upper outer periphery of the feed roller 21.

  Here, the feed roller 21 conveys the paper 11a in contact with the outer peripheral surface by the normal rotation (right rotation in the drawing) in the discharge direction (rightward in the drawing) by the guide function of the paper guide 22. In order to reliably perform this conveyance, it is necessary to press the paper 11 a against the outer peripheral surface of the feed roller 21. Therefore, the second guide portion 22 b of the paper guide 22 is provided with a pressure member that presses the paper 11 a against the outer peripheral surface of the feed roller 21.

  As this pressure member, for example, as shown in FIG. 3, a portion 23A formed by bending the inner surface of the second guide portion 22b of the paper guide 22 is used. Here, the feed roller 21 is composed of a plurality of rollers attached to a rotating shaft 24 in a direction orthogonal to the conveying direction, and the paper guide surface of the paper guide 22 protrudes between the plurality of rollers (hereinafter, referred to as “feed roller 21”). 23A is also used as a pressure member. By forming the protruding pressure part 23A in this way, the sheet 11a that moves in the gap with the second guide part 22b by the rotation of the feed roller 21 is placed on the outer peripheral surface of the feed roller 21 by the protruding pressure part 23A. It is press-contacted and moves reliably by the rotation of the feed roller 21.

  The guide member 31 is a loop space 33 branched to the bottom surface 32 (or the top surface of the table on which the printer device 10 is supported) of the printer device 10 with respect to the sheet conveyance path from the cutter device 13 to the feed roller 21. The first guide member 311 and the second guide member 312 are formed.

  The first guide member 311 is provided on the cutter device 13 side. In the illustrated embodiment, the outer surface of the cutter case 131 forms a part of the first guide member 311. The first guide member 311 is bent to the left in the figure, and an extended space 34 along the bottom surface 32 is also formed between the first guide member 311 and the bottom surface 32. The right end of the extension space 34 is communicated with the lower end of the loop space 33.

  The second guide member 312 is provided on the feed roller 21 side, and faces the part of the first guide member 311 to form the loop space 33 described above. Further, the second guide member 312 is inclined at an angle that forms an obtuse angle with the bottom surface 32 that forms the extension space 34.

  Further, the extension space 34 described above gradually expands from the right end portion shown in the drawing, which is a communicating portion with the loop space 33, toward the extension end, which is the left end portion shown in the drawing, as shown in the drawing. Is formed.

  As described above, the feed roller 21 conveys the paper 11a in the discharge direction along the paper guide 22 by its forward rotation. Before the cutting of the paper 11a by the cutter device 13, the leading end of the paper 11a is discharged to the discharge unit. It is fed out to the extent that it does not protrude from 15 or cannot be caught from the outside even if it protrudes. For this reason, it is rotated forward by a preset first transport distance by a control unit described later. Further, after the above-described normal rotation, the control unit rotates the feed roller 21 in the reverse direction by a preset second conveyance distance.

  FIG. 4 shows a control device of the printer device 10 including the control unit described above. In this control apparatus, the control unit 100 described above is installed as means for performing control of paper conveyance, printing, paper cutting, and paper discharge. In this embodiment, paper printing and paper discharge are controlled by a single control unit 100, but these controls may be configured separately.

  The control unit 100 includes, for example, a microcomputer in order to link with the host computer 102 and perform various controls. A central processing unit (MPU) 104 of the control unit 100 performs various controls and operations such as paper conveyance control, printing control, paper cutting control, and paper discharge control according to a program. The MPU 104 includes a timer 106 as means for performing time setting and time control.

  A ROM 108 and a RAM 110 are installed as main storage means for storing a control program to be executed by the MPU 104, data in the process of control or calculation, and the like. A ROM 108 is a read-only memory having a control program, a table, and the like, and a RAM 110 is an occasional write memory for storing data in the middle of calculation.

  Further, the control unit 100 is provided with an input / output unit (I / O) 112 that takes in various input data from the host computer 102 and takes out the control output of the control unit 100 to the host computer 102. The I / O 112 is linked to the MPU 104, the ROM 108, and the RAM 110 through a bus.

  The I / O 112 is connected with first, second, third, and fourth drivers 114, 116, 118, and 120 as means for extracting a control output. The driver 114 supplies necessary drive output to the printing apparatus 12. The driver 116 supplies drive output to the cutter device 13. The driver 118 takes out the drive output of the motor 21M that drives the feed roller 21. In addition, the driver 120 takes out a display drive output that causes the display 122 to perform various displays.

  The printing apparatus 12 includes the print head (for example, thermal print head) 17 and the platen 18 described in FIG. The platen 18 is formed in a roller shape, and as described above, transports the paper 11a to be printed and supports the paper 11a being printed. The platen 18 is rotationally driven in synchronization with the printing operation by a motor (not shown) based on the control of the MPU 104 (control function as a print command means). The thermal print head 17 performs printing on the paper 11 a based on print data from the host computer 102.

  Further, the MPU 104 of the control unit 100 reversibly operates the motor 21M via the driver 118, and controls the operation of the feed roller 21 in the forward and reverse rotation directions as described above. That is, before the cutting of the paper 11a by the cutter device 13, the feed roller 21 is grasped from the outside even if the leading end of the paper 11a in contact with the outer surface does not protrude from the discharge portion 15 described in FIG. It is rotated forward by a preset first transport distance so that it is fed out to the extent possible. Further, after this forward rotation, the feed roller 21 is rotated in reverse by a preset second transport distance.

  Here, the second transport distance due to the reverse rotation of the feed roller 21 is set shorter than the first transport distance due to the forward rotation of the feed roller 21. This is to prevent the leading end of the paper 11 a from coming off the outer peripheral surface of the feed roller 21 due to the reverse rotation of the feed roller 21 as will be described later.

  Next, the operation of the printer apparatus 10 will be described. After power is supplied to the control unit 100 and initial setting is performed on the control unit 100, a printing operation is performed along with paper conveyance.

  First, the roll paper 11 is rewound, and the paper 11 a is pulled out and set so that the leading end portion is positioned between the print head 17 and the platen 18 of the printer 12. In this state, when a print request is input from the host computer 102 shown in FIG. 4, the control unit 100 operates the printing device 12 in response to the print request, and print data sent from the host computer 102 is displayed. Printing is performed on the paper 11a. This printing is performed by the print head 17, and the printed paper 11 a is conveyed in the discharge direction (right direction in the drawing) by the rotation of the platen 18.

  The paper 11a printed by the printing device 12 passes between the cutter blades 13a and 13b of the cutter device 13, and is then guided to the lower surface of the first guide portion 22a of the paper guide 22, and its leading end is on the conveyance path of the paper 11a. It abuts on the outer peripheral surface of the feed roller 21 disposed on the surface. The contact of the sheet 11a with the outer peripheral surface of the feed roller 21 is detected by counting drive pulses of a motor (not shown) that drives the platen 18 to rotate. Instead of counting drive pulses, a sensor may be provided to detect the leading end position of the paper 11a.

  When the leading end of the printed paper 11 a comes into contact with the outer peripheral surface of the feed roller 21, the control unit 100 controls the motor 21 </ b> M to rotate the feed roller 21 in the forward direction in accordance with the conveyance speed of the printing device 12. For this reason, the sheet 11 a moves in an arc shape between the outer peripheral surface of the feed roller 21 and the arc inner surface of the second guide portion 22 b of the paper roller 22. At this time, since the sheet 11a is pressed against the outer peripheral surface of the feed roller 21 as shown in FIG. 3 by the protruding pressure part 23A functioning as a pressure member, the sheet 11a is reliably conveyed in the discharge direction by the normal rotation. At this time, the feed roller 21 feeds the paper 11a by a preset first transport distance. The first transport distance is set such that the leading edge of the sheet does not protrude from the discharge unit 15 or cannot be grasped from the outside even if it protrudes. The control unit 100 controls the motor 21M to stop the forward rotation of the feed roller 21 when the transport distance of the paper 11a by the feed roller 21 reaches a preset first transport distance.

  Next, the control unit 100 controls the motor 21M to reversely rotate the feed roller 21 by a preset second conveyance distance. The sheet 11 a is loosely V-shaped at the connection portion between the first guide portion 22 a inclined to the upper left in the drawing with respect to the outer periphery of the feed roller 21 and the second guide portion 22 b along the outer peripheral surface of the feed roller 21. It is guided to. Therefore, when the feed roller 21 rotates in the reverse direction as shown in FIG. 2, the printed paper 11 a is curved and formed in a loop shape from the loosely guided portion described above in the V-shape. Housed as shown. At this time, the second transport distance by reverse rotation is set to be smaller than the first transport distance by forward rotation, so that the leading edge of the paper 11 a does not fall off the outer peripheral surface of the feed roller 21.

  In this way, predetermined printing is performed on the paper 11a, and when printing is completed, the control unit 100 operates the cutter device 13 to cut the paper 11a. Thereafter, the control unit 100 controls the motor 21M to rotate the feed roller 21 forward. Due to the forward rotation of the feed roller 21, the cut sheet 11 a which is curved and formed in a loop shape with the cutter device 13 and is temporarily stored is conveyed again in the discharge direction (right direction in the drawing), and the discharge unit 15 is discharged.

  In this embodiment, when the printed paper 11a is curved in a loop shape and temporarily stored in the apparatus, the paper 11a once transported in the discharge direction by the forward rotation of the feed roller 21 is fed to the feed roller 21. The paper 11a is forcibly bent in a loop shape by being conveyed in the reverse direction by the reverse rotation of. For this reason, the space | interval with the cutter apparatus 13 which accommodates a loop-shaped part can be narrowed, and size reduction of the whole apparatus can be promoted further. That is, in the conventional device of the above-described known example, the printed paper is looped by its own weight by transporting the paper in the paper discharge direction, so it is necessary to secure a sufficient space for looping the paper. . In contrast, in this embodiment, as described above, the paper 11a is forcibly bent into a loop shape by the reverse rotation of the feed roller 21, so that the space for forming the loop may be smaller than that of the conventional apparatus. As a result, the entire apparatus can be further miniaturized.

  Here, when the object to be printed is a receipt, the printed paper portion, that is, the looped portion may be long depending on the shopping amount. Even in such a case, since the lower end portion of the loop space 33 communicates with the extension portion 34 extending in the lateral direction, the loop forming portion including the loop space 33 and the extension portion 34 is accommodated. can do. Therefore, since the space for the loop is vertical as in the prior art, it is not necessary to take an unrealistic measure such as opening an opening in the mounting table in order to secure a vertical space, and a large storage space is required. It can be secured. Furthermore, if the cover of the extended end portion of the extension space 34 at the left end in the figure is opened, the loop-shaped portion can be made infinitely long.

  The second guide member 312 that forms the loop space 33 is inclined so as to form an obtuse angle with respect to the bottom surface 32 that forms the extension portion 34, so that the paper portion formed in the loop shape is used for the loop. It is possible to smoothly move from the space 33 to the extending portion 34 formed sideways, and it is possible to effectively prevent the jamming due to the stagnation at this portion. Further, since the extension portion 34 is formed so that the space height gradually increases toward the extension end on the left side of the drawing, the transition of the paper portion formed in a loop shape in the extension portion 34 is also smooth. It can be carried out.

  The extension 34 is formed below the roll paper 11 supported by the main body frame 10a. Since this portion has conventionally been a dead space, the formation of the extension portion 34 according to this embodiment uses this dead space. That is, with a rational arrangement configuration, it is possible to make a large temporary accommodation space for the loop-shaped portion without increasing the size of the entire apparatus.

  Here, the width of the space 33 for looping the paper 11a differs depending on the quality and thickness of the paper. For example, when the paper 11a is thick, the width of the space 33 for looping is smaller than that of the thin paper. The width increases. For this reason, when a wide range of paper types is to be printed, the distance from the cutter device 13 may be determined according to the paper quality that is most difficult to form in a loop. When a wide range of paper types is not used, the distance from the cutter device 13 can be narrowed according to the ease of bending of the paper to be used.

  Further, the distance from the cutter device 13 to the outer peripheral surface of the feed roller 21 with which the leading end of the printed paper 11 a abuts is set smaller than the outer diameter of the core core 16 of the roll paper 11. This is to eliminate an unstable operation state due to curling of the paper 11a. That is, the curl associated with the winding is formed on the paper 11 a rewound from the roll paper 11. The curvature of the curl has a small curvature at the portion where the radius of the roll paper 11 is small, and there is no particular problem, but the curvature becomes large at a portion near the core core 16 of the roll paper 11 and is drawn from the nearest portion of the core core 16. In the paper 11a, a curl having the same curvature as the outer periphery of the core may be formed. Even if such a tight curl is formed, if the distance from the cutter device 13 to the outer peripheral surface of the feed roller 21 is set to be smaller than the outer diameter of the core core 16 of the roll paper 11, printing is performed. The leading edge of the paper 11a sent out through the head can surely come into contact with the outer peripheral surface of the feed roller 21, so that the paper 11a can be discharged reliably and stably.

  In the above embodiment, the protruding pressurizing portion 23A formed on the second guide portion 22b of the paper guide 22 shown in FIG. 3 is exemplified as the pressurizing member that presses the printed paper 11a against the feed roller 21. As shown in FIG. 5, a pinch roller 23 </ b> B that is slidably in contact with the outer peripheral surface of the feed roller 21 through an opening (not shown) formed in the second guide portion 22 b of the paper guide 22 may be used as a pressure member. .

  Moreover, although the case where the thermal print head which prints on a thermal paper was used was demonstrated in the said embodiment, the case where a print head of another type is used can be implemented similarly.

  Furthermore, in the above-described embodiment, the printed paper 11a is stopped after the first transport distance feeding operation set in advance by the forward rotation of the feed roller 21, and then the feed roller 21 is reversely rotated. The printed sheet 11a is curved in a loop shape in the loop space 33 and accommodated in the loop space 33, but the feed roller does not necessarily have to be rotated in reverse.

  For example, the printed paper 11a is a relatively weak paper, and as shown in FIG. 6, the distance A between the first guide member 311 and the second guide member 312 forming the loop space 33 is relatively large. When set, the reverse rotation after the forward rotation of the feed roller 21 described above becomes unnecessary.

  Also in this case, the printed paper 11 a is sent in the conveyance distance discharge direction set in advance by the forward rotation of the feed roller 21. The transport distance at this time is set such that the front end of the printed paper 11a does not protrude from the discharge portion 15 or cannot be grasped from the outside even if it protrudes. After the conveyance, the feed roller 21 is stopped so that the front half portion of the printed paper 11a is nipped and held by the feed roller 21 and the protruding pressure unit 23A or the pinch roller 23B.

  If printing by the printing device 12 is not completed in a state where the leading portion of the paper 11a is stopped, printing continues, and the printed paper 11a continues to be sent out from the printing device 12 through the cutter device 13.

  At this time, an interval A between the first guide member 311 and the second guide member 312 that forms the loop space 33 is such that a loop can be formed on the paper 11a and the paper 11a sent out by the platen 18 is not broken. If it is set relatively wide, the second half of the paper 11a sent out by the printing device 12 hangs down by its own weight in the loop space 33 having the interval A, and is curved in a loop shape as shown in FIG. Enter while.

  When the object to be printed is a receipt, the amount of printing for one receipt may be extremely large, and the portion curved in a loop shape becomes long. Even in such a case, the second guide member 312 that forms the loop space 33 is inclined so as to form an obtuse angle with respect to the bottom surface 32 that forms the extension portion 34. Therefore, as shown in FIG. The sheet portion formed in the shape can smoothly move from the loop space 33 to the extension portion 34 formed in the horizontal direction. The interval B of the communication portion between the extension portion 34 and the loop space 33 may be set equal to or larger than the interval A.

  Further, since the extension portion 34 is formed so that the space height gradually increases toward the extension end on the left side of the drawing, the transition of the paper portion formed in a loop shape in the extension portion 34 is also smooth. It can be carried out. Furthermore, as shown in FIG. 9, if the cover at the left end of the extension space 34 is opened, the loop-shaped portion can be made infinitely long.

  After printing on the paper 11a is completed in this way, the cutter device 13 is operated to cut the paper 11a. Thereafter, the feed roller 22 is rotated forward. By the forward rotation of the feed roller 22, the cut paper 11 a temporarily stored in the loop space 33 (and the extension space 34) is discharged from the discharge unit 15.

  Although several embodiments of the present invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 ... Printer apparatus 11 ... Roll paper 11a ... Paper 12 ... Printing apparatus 13 ... Cutter apparatus 14 ... Paper discharge mechanism 16 ... Core core 17 ... Print head 18.・ ・ Platen 21 ... Feed roller 22 ... Paper guide 22a ... First guide part 22b ... Second guide part 23 ... Pressure member 23A ... Protruding pressure part 23B .. Pinch roller 25 ... discharge portion 31 ... guide member 311 ... first guide member 312 ... second guide member 32 ... bottom surface 33 ... loop space 34 ... extension portion 100 ... control portion

Claims (7)

A paper discharge mechanism that discharges paper that has been pulled out from roll paper and printed by a printing device and then cut by a cutter device from a predetermined discharge unit,
A feed roller that conveys the paper fed from the printing device in a discharge direction by forward rotation;
A paper guide that abuts the front end of the paper on the outer peripheral surface of the feed roller and guides the paper along the outer peripheral surface of the feed roller as the feed roller rotates;
A pressure member provided in the paper guide and press-contacting the paper against the outer peripheral surface of the feed roller;
Before cutting the paper by the cutter device, the control unit that stops the feed roller by rotating it forward for a preset transport distance;
A first guide member for forming a loop space branched to the bottom surface side with respect to a paper conveyance path from the cutter device to the feed roller, and a second guide member facing the first guide member,
The first guide member communicates with a lower end portion of the loop space and also forms an extension space along the bottom surface, and the second guide member is inclined at an angle forming an obtuse angle with the bottom surface forming the extension space. doing,
A paper discharge mechanism characterized by that.   The paper discharge mechanism according to claim 1, wherein the extension space gradually increases in height from the communicating portion with the loop space toward the extension end. A paper discharge mechanism that pulls out a roll paper wound in a roll shape and prints it by a printing device and then cuts the paper cut by a cutter device from a predetermined discharge portion,
A feed roller that has an outer peripheral surface disposed at a position that closes a conveyance path of the paper that is sent out from the printing apparatus, and that conveys the paper in a discharge direction by forward rotation;
A paper guide that abuts the front end of the paper on the outer peripheral surface of the feed roller and guides the paper along the outer peripheral surface of the feed roller as the feed roller rotates;
A pressure member provided in the paper guide and press-contacting the paper against the outer peripheral surface of the feed roller;
Before the paper is cut by the cutter, the feed roller is rotated forward by a preset first transport distance, and after the forward rotation, the feed roller is set to a preset first shorter than the first transport distance. A control unit that rotates in reverse by two transport distances;
A paper discharge mechanism characterized by comprising:   The feed roller is composed of a plurality of rollers arranged in a direction perpendicular to the conveying direction, and the pressure member is formed by a portion of the paper guide surface of the paper guide that protrudes between the plurality of rollers. The paper discharge mechanism according to claim 1 or 3, wherein the paper discharge mechanism is provided.   4. The paper discharge mechanism according to claim 1, wherein the pressure member is a pinch roller press-fitted on an outer peripheral surface of the feed roller through an opening formed in the paper guide. .   The distance from the cutter device provided at the exit portion of the printing unit to the outer peripheral surface of the feed roller with which the leading edge of the printed paper abuts is set smaller than the outer diameter of the core core of the roll paper. The paper discharge mechanism according to any one of claims 3 to 5, wherein the paper discharge mechanism is provided. Print command means for giving an arbitrary print command to the print unit;
The paper discharge mechanism according to any one of claims 1 to 6, wherein paper discharged from a roll paper and printed by the printing unit and then cut by a cutter device is discharged from a predetermined discharge unit;
A printer apparatus comprising:

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