JP6060787B2 - Tape cassette - Google Patents

Description

  The present invention relates to a tape cassette that stores a tape as a printing medium.

  2. Description of the Related Art Conventionally, a tape cassette that stores a tape that is a printing medium is known. The tape cassette has a tape storage area in the cassette case. The tape storage area stores a tape roll around which a tape as a printing medium is wound. The tape is pulled out from the tape roll and conveyed along the conveyance path. The conveyance path is provided with a guide portion that contacts the tape regardless of the amount of tape roll stored. A plurality of wall portions are positioned between the tape roll and the guide portion to form a tape transport path (see, for example, Patent Document 1).

JP-A-8-39908

  In the conventional tape cassette, among the plurality of wall portions positioned between the tape roll and the guide portion, the wall portions facing the same surface of the tape are arranged in a zigzag manner. For this reason, when a tape contacts a some wall part, it becomes easy to bend a tape along the position of a wall part, and the frictional force between wall parts may become large. For this reason, a tape may not be smoothly conveyed.

  The objective of this invention is providing the tape cassette which can convey a tape smoothly.

  A tape cassette according to the present invention includes a cassette case having a top surface, a bottom surface, a front surface, and a pair of front and rear side surfaces that are orthogonal to the front surface, and a tape roll on which a tape as a printing medium is wound. A tape storage area that is an area in which the tape is stored, a wall provided along an outer periphery of the tape storage area, and a first wall that forms a transport path of the tape extending from the tape roll; and A guide portion that is provided on the downstream side of the transport path with respect to the first wall portion and contacts the tape regardless of the amount of tape roll stored in the tape storage region; and the first wall portion and the guide portion. A second wall portion provided between the second wall portion and the second wall portion on the opposite side of the second wall portion with the tape interposed therebetween, and the second wall Part and the guide part A first wall portion, one end of the second wall portion and the fourth wall portion facing the tape is opposed to one surface of the tape, One end of the third wall portion facing the tape and the guide portion are opposed to the other surface of the tape, and one end of the second wall portion facing the tape is the first wall portion and the fourth wall portion. And a position along a straight line connecting one end facing the tape.

  In this case, one end of each of the first wall portion, the second wall portion, and the fourth wall portion that faces one surface of the tape faces the tape on each of the first wall portion and the fourth wall portion. Line up along a straight line connecting the ends. For this reason, even when the conveyed tape contacts the first wall portion, the second wall portion, and the fourth wall portion, the tape is difficult to bend. Therefore, the frictional force between the first wall portion, the second wall portion, and the fourth wall portion and the tape is prevented from increasing, and the tape can be smoothly conveyed.

  In the tape cassette, one end of the third wall portion facing the tape may be a column extending in the vertical direction. In this case, since the third wall portion is a cylinder, the tape is smoothly conveyed even if the tape contacts the third wall portion.

  In the tape cassette, the tape is pulled out from the tape roll behind the winding center of the tape roll in the front-rear direction, and one end of the third wall portion facing the tape is in the front-rear direction. The tape roll may be positioned behind the winding center. In this case, the distance between the third wall portion and the second wall portion is shorter than when the third wall portion is located on the front side of the winding center of the tape roll. For this reason, even when the tape roll storage amount is changed and the tape roll diameter is changed, the variation in the tape transport path is limited to the distance between the third wall portion and the second wall portion having a short distance. The Therefore, fluctuations in the tape transport path can be reduced. Therefore, even when the tape roll storage amount changes, the tape is smoothly conveyed.

  In the tape cassette, the fourth wall portion may be a cylinder. In this case, since the fourth wall portion is a cylinder, the frictional force when the tape contacts the fourth wall portion is reduced. Therefore, the tape is transported more smoothly.

  In the tape cassette, the tape may be a heat-shrinkable tube. When the tape is a heat-shrinkable tube, for example, the waist of the tape becomes stronger than a heat-sensitive tape or the like. If the tape becomes stiff, the tape will easily come into contact with the first wall, the second wall, and the fourth wall, but the tape will be bent by the first wall, the second wall, and the fourth wall. Since it is difficult to do so, the tape is transported smoothly.

  In the tape cassette, the third wall portion may be a roller that can rotate about the vertical direction as an axis. In this case, since the third wall portion is a rotatable roller, it is more smoothly conveyed when the tape comes into contact with the third wall portion than when the third wall portion does not rotate.

It is a perspective view of the tape printer 1 in the state where the cassette cover 6 is opened. It is a perspective view for demonstrating the tape cassette 30 and the cassette mounting part 8. FIG. It is a top view of the cassette mounting part 8 in which the tube type tape cassette 30 was mounted | worn. It is a state transition diagram for demonstrating the usage condition of the tube tape. FIG. 3 is a plan view of a tube type tape cassette 30 with an upper case 311 removed. It is a longitudinal cross-sectional view of the periphery of the 2nd tape support hole 66, the wall part 504, and the support shaft 584. FIG. 4 is a plan view of a lower case 312. FIG. 4 is a perspective view of a lower case 312. FIG. It is a top view of the tape cassette 32 which concerns on a modification.

  Embodiments of the present invention will be described with reference to the drawings. The tape printer 1 and the tape cassette 30 according to the present embodiment will be described. In the description of the present embodiment, the lower left side, upper right side, lower right side, upper left side, upper side, and lower side in FIG. 1 are respectively the front side, rear side, right side, left side, upper side, and lower side of the tape printer 1. . The lower right side, upper left side, upper right side, lower left side, upper side, and lower side in FIG. 2 are respectively defined as the front side, rear side, right side, left side, upper side, and lower side of the tape cassette 30.

  In the present embodiment, various tapes (for example, thermal paper tape, printing tape, double-sided adhesive tape, film tape, tube tape 57 described later) housed in the tape cassette 30 are collectively referred to as tape. The types of tapes stored in the tape cassette 30 (for example, tape width, printing mode, tape color, character color, etc.) are collectively referred to as tape types.

  The tape printer 1 will be described with reference to FIGS. For convenience of explanation, in FIG. 2 and FIG. 3, the side walls forming the periphery of the cassette mounting portion 8 are shown. However, these drawings are merely schematic diagrams, and the side walls shown in the drawings are drawn thicker than actual. It is. The gear group including the gears 91, 93, 94, 97, 98, 101 shown in FIG. 2 is actually covered with the bottom surface of the cavity 811. In order to explain these gear groups, the bottom surface of the cavity 811 is not shown in FIG. 3 and 5, the tape cassette 30 is in a state where the upper case 311 is removed.

  A schematic configuration of the tape printer 1 will be described. The tape printer 1 is a general-purpose tape printer that can use various types of tape cassettes such as a thermal type, a receptor type, a laminate type, and a tube type. Thermal type tape cassettes are equipped with thermal paper tape. The receptor type tape cassette includes a printing tape and an ink ribbon. The laminate type tape cassette includes a double-sided adhesive tape, a film tape, and an ink ribbon. A tube-type tape cassette includes a tube tape and an ink ribbon.

  As shown in FIG. 1, the tape printer 1 includes a main body cover 2 having a substantially rectangular parallelepiped shape. A keyboard 3 including character keys and function keys is disposed on the front surface of the main body cover 2. On the rear side of the keyboard 3, a display 5 capable of displaying characters (characters, numbers, figures, etc.) input with the keyboard 3 is provided. A cassette cover 6 that is opened and closed when the tape cassette 30 (see FIG. 2) is replaced is provided on the rear side of the display 5.

  The cassette cover 6 is a lid portion having a substantially rectangular shape in plan view. The cassette cover 6 is pivotally supported at both right and left ends above the back surface of the main body cover 2 and can be rotated between a closed position (not shown) and an open position shown in FIG. Inside the main body cover 2, a cassette mounting portion 8, which is an area where the tape cassette 30 can be attached and detached, is provided. The cassette mounting portion 8 is covered when the cassette cover 6 is in the closed position, and is exposed when the cassette cover 6 is in the open position.

  A discharge slit 111 is provided behind the left side surface of the main body cover 2. The discharge slit 111 discharges the printed tape from the cassette mounting portion 8. A discharge window 112 is provided on the left side surface of the cassette cover 6. The discharge window 112 exposes the discharge slit 111 to the outside when the cassette cover 6 is closed.

  The internal structure of the main body cover 2 below the cassette cover 6 will be described with reference to FIG. As shown in FIG. 2, the cassette mounting portion 8 includes a cavity 811 and a corner support portion 812. The cavity 811 is a recess having a planar bottom surface that is recessed so as to substantially correspond to the shape of the bottom surface 302 of the cassette case 31. The corner support portion 812 is a plane portion that extends horizontally from the outer edge of the cavity 811. When the tape cassette 30 is mounted on the cassette mounting portion 8, the corner support portion 812 supports the lower surface of the peripheral edge of the tape cassette 30.

  Two positioning pins 102 and 103 are provided at two positions of the corner support portion 812. Specifically, a positioning pin 102 is provided on the left side of the cavity 811. A positioning pin 103 is provided on the right side of the cavity 811. The positioning pins 102 and 103 are respectively inserted into pin holes (not shown) provided on the bottom surface 302 of the cassette case 31 when the tape cassette 30 is mounted on the cassette mounting portion 8. At this time, the positioning pins 102 and 103 position the tape cassette 30 in the front-rear and left-right directions at the left and right positions of the peripheral portion of the tape cassette 30.

  A head holder 74 is provided in front of the cassette mounting portion 8. The head holder 74 carries the thermal head 10 provided with a heating element (not shown). When the tape cassette 30 is mounted on the cassette mounting portion 8, the head holder 74 is inserted into the head insertion portion 39 (see FIG. 3). A tape drive motor 23 that is a stepping motor is disposed outside the cassette mounting portion 8 (upper right side in FIG. 2). A gear 91 is fixed to the lower end of the drive shaft of the tape drive motor 23. The gear 91 meshes with the gear 93 through the opening. The gear 93 meshes with the gear 94. The gear 94 meshes with the gear 97. The gear 97 is engaged with the gear 98. The gear 98 is engaged with the gear 101.

  A ribbon take-up shaft 95 is erected on the upper surface of the gear 94. The ribbon take-up shaft 95 is a shaft body that can be attached to and detached from the ribbon take-up spool 44. A tape drive shaft 100 is erected on the upper surface of the gear 101. The tape drive shaft 100 is a shaft body that can be attached to and detached from the hole 461 of the tape drive roller 46.

  When the tape drive motor 23 rotates and rotates the gear 91 counterclockwise with the tape cassette 30 mounted on the cassette mounting portion 8, the ribbon take-up shaft 95 rotates counterclockwise via the gear 93 and gear 94. Rotate in the direction. The ribbon take-up shaft 95 rotates the ribbon take-up spool 44 mounted on the ribbon take-up shaft 95. Further, the rotation of the gear 94 is transmitted to the tape drive shaft 100 via the gear 97, the gear 98, and the gear 101, and the tape drive shaft 100 is rotationally driven in the clockwise direction. The tape drive shaft 100 rotationally drives the tape drive roller 46 attached to the tape drive shaft 100.

  A guide shaft 120 is erected on the right rear portion of the cassette mounting portion 8. The guide shaft 120 is a shaft body that can be inserted into and removed from the guide hole 47 of the tape cassette 30. The guide shaft 120 includes two shaft portions having different diameters (a large diameter shaft portion 120A and a small diameter shaft portion 120B) and a tapered portion 120C. The large-diameter shaft portion 120 </ b> A is a shaft portion that forms the base side of the guide shaft 120, and the guide shaft 120 has the largest diameter. The small-diameter shaft portion 120B is a shaft portion that forms the distal end side of the guide shaft 120, and has a smaller diameter than the large-diameter shaft portion 120A. The tapered portion 120C is a shaft portion provided between the large diameter shaft portion 120A and the small diameter shaft portion 120B. The tapered portion 120C has a tapered surface whose shaft diameter gradually decreases from the large diameter shaft portion 120A side toward the small diameter shaft portion 120B side.

  As shown in FIG. 3, an arm-shaped platen holder 12 is provided on the front side of the head holder 74. The platen holder 12 is pivotally supported around a pivotal support 121 so that it can swing. A platen roller 15 and a movable conveyance roller 14 are rotatably supported at the front end side of the platen holder 12. The platen roller 15 can contact and separate from the thermal head 10 relative to the thermal head 10. The movable conveying roller 14 can be brought into contact with and separated from the tape driving roller 46 relative to the tape driving roller 46 mounted on the tape driving shaft 100.

  The platen holder 12 is connected to a release lever (not shown) that moves in the left-right direction in conjunction with opening and closing of the cassette cover 6. When the cassette cover 6 is opened, the release lever moves in the right direction, and the platen holder 12 moves toward the standby position shown in FIG. In the standby position shown in FIG. 3, since the platen holder 12 is separated from the cassette mounting portion 8, a person can detach the tape cassette 30 from the cassette mounting portion 8. The platen holder 12 is always elastically biased to the standby position by a winding spring (not shown).

  When the cassette cover 6 is closed, the release lever moves leftward, and the platen holder 12 moves backward toward the printing position (not shown). At the printing position, the platen holder 12 is close to the cassette mounting portion 8. Specifically, when the tube type tape cassette 30 is mounted on the cassette mounting portion 8, the platen roller 15 presses the thermal head 10 via the tube tape 57 and the ink ribbon 60. At the same time, the movable conveyance roller 14 presses the tape driving roller 46 through the tube tape 57. At the printing position, the tape printer 1 can perform printing using the tape cassette 30 mounted on the cassette mounting unit 8.

  As shown in FIG. 3, a cutting mechanism 17 for cutting the printed tape 50 at a predetermined position is provided on the right side of the discharge slit 111 (see FIG. 1). The cutting mechanism 17 has a fixed blade 18 and a moving blade 19. The movable blade 19 is movable in the front-rear direction (vertical direction in FIG. 3) facing the fixed blade 18.

  With reference to FIG. 4, the usage aspect of the tube tape 57 (that is, the printed tape 50) after printing is demonstrated. FIG. 4A shows the printed tape 50 in which two characters “Cable A” are printed on the tube tape 57, cut by the cutting mechanism 17, and discharged from the discharge slit 111. The tube tape 57 includes a surface 59 (hereinafter referred to as “shrinkable surface 59”) formed of a material that is thermally contracted by heating, and a surface 58 (hereinafter referred to as “non-shrinkable surface” formed of a material that is not contracted by heating. 58 ”), and is a cylindrical and long tape. The tube tape 57 is wound around the first tape spool 40 in a state where the tube tape 57 is crushed flat so that the non-shrink surface 58 becomes the printing surface and the shrink surface 59 becomes the back surface. The printed tube tape 57 is unloaded from the tape cassette 30 and then unfolded as shown in FIG. As shown in FIG. 4 (B), after the cable 80 which is a mounting object is inserted through the tube tape 57 developed in a cylindrical shape, the tube tape 57 is heated by a dryer or the like. As a result, the contraction surface 59 of the tube tape 57 contracts, and the tube tape 57 is fixed to the side surface 81 of the cable 80 as shown in FIG.

  Next, the tape cassette 30 will be described with reference to FIGS. 2 and 5 to 8. For convenience of explanation, FIG. 6 shows a cassette case 31 from which tapes and spools housed therein are removed.

  A schematic configuration of the tape cassette 30 will be described. The tape cassette 30 is a general-purpose cassette that can be mounted on the above-described thermal type, receptor type, laminate type, and the like by appropriately changing the type of tape accommodated therein and the presence or absence of an ink ribbon. 2 and 5 show, as an example, a tape cassette 30 mounted in a tube type.

  As shown in FIG. 2, the tape cassette 30 includes a cassette case 31 that is a casing thereof. The cassette case 31 as a whole has a substantially rectangular shape (box shape) having rounded corners in plan view. The cassette case 31 includes an upper case 311 and a lower case 312. The lower case 312 includes a bottom plate 306 that forms the bottom surface 302 of the cassette case 31. The upper case 311 includes an upper plate 305 that forms the upper surface 301 of the cassette case 31, and is fixed to the upper portion of the lower case 312.

  In the cassette case 31 of the present embodiment, the entire periphery of the upper plate 305 and the bottom plate 306 is surrounded by a peripheral wall forming a side surface, but the entire case does not necessarily have to be surrounded. For example, an opening that exposes the inside of the cassette case 31 is provided on a part of the peripheral wall (for example, the back), or a boss that connects the upper plate 305 and the bottom plate 306 is provided at a position facing the opening. May be.

  The cassette case 31 has four corners 321 to 324 formed to have the same width (the same length in the vertical direction) regardless of the tape type of the tape cassette 30. In the following description, the left rear corner is the first corner 321, the right rear corner is the second corner 322, the right front corner is the third triangle 323, and the left front corner is the fourth corner. It is called 324. The first to third triangular portions 321 to 323 protrude outward from the side surface of the cassette case 31 so as to form a right angle in plan view. The fourth corner portion 324 does not form a right angle because the discharge guide portion 49 is provided at the corner. The lower surfaces of the corner portions 321 to 324 are portions that are supported by the corner support portion 812 when the tape cassette 30 is attached to the cassette attachment portion 8.

  The cassette case 31 is provided with four support holes 65 to 68 for rotatably supporting spools mounted in the cassette case 31. In the following description, the holes provided in the left rear portion, right rear portion, and right front portion of the cassette case 31 are referred to as a first tape support hole 65, a second tape support hole 66, and a ribbon support hole 67, respectively. A hole provided between the first tape support hole 65 and the ribbon support hole 67 in plan view is referred to as a take-up spool support hole 68.

  The first tape support hole 65 rotatably supports the first tape spool 40 (see FIGS. 3 and 5). The ribbon support hole 67 rotatably supports the ribbon spool 42 (see FIGS. 3 and 5). The take-up spool support hole 68 rotatably supports the ribbon take-up spool 44 (see FIGS. 3 and 5). A clutch spring 340 (see FIGS. 3 and 5) is attached to the lower part of the ribbon take-up spool 44. The clutch spring 340 is a coil spring that prevents the ink ribbon 60 taken up by the ribbon take-up spool 44 from rotating reversely. Although not shown, for example, when the cassette case 31 is mounted on a laminate cassette, the second tape support hole 66 rotatably supports a second tape spool around which a film tape as a printing medium is wound.

  As shown in FIG. 6, the second tape support hole 66 includes an upper tape support portion 66A in which an upper plate 305 protrudes downward in a circular shape, and a lower tape support portion 66B in which a bottom plate 306 protrudes upward in a circular shape. Including. The upper tape support portion 66 </ b> A and the lower tape support portion 66 </ b> B are provided at positions corresponding to the vertical direction of the cassette case 31.

  66 A of upper tape support parts are provided with the axial hole 582 which penetrates the upper board 305 to an up-down direction in the center part in planar view. A support shaft 584 extending upward is provided upright at the center of the lower tape support 66B in plan view. When the upper end of the support shaft 584 is fitted into the shaft hole 582, the upper tape support portion 66A and the lower tape support portion 66B are connected. A cylindrical wall portion 504 (see FIGS. 6 and 8) extending upward along the periphery of the lower tape support portion 66B is provided on the upper end surface.

  As shown in FIGS. 3, 5, 7, and 8, a first tape region 400, a second tape region 410, a first ribbon region 420, and a second ribbon region 440 are provided in the cassette case 31. It has been. The first tape area 400 and the second tape area 410 are areas in which tapes can be stored, respectively. The first tape area 400 is a substantially circular area in plan view that occupies the left half of the cassette case 31 adjacent to the first corner 321. The second tape region 410 is a substantially circular region in plan view provided at the right rear portion in the cassette case 31 adjacent to the second corner portion 322.

  The first ribbon area 420 is an area in which an unused ink ribbon 60 can be stored. The first ribbon region 420 is provided at the right front portion in the cassette case 31 adjacent to the third triangular portion 323 and the head insertion portion 39. The second ribbon area 440 is an area in which the ink ribbon 60 after used for printing (hereinafter, used ink ribbon 60) can be stored. The second ribbon region 440 is provided between the first tape region 400 and the first ribbon region 420 in the cassette case 31 and is positioned between the arm portion 34 and the first tape region 400 in the front-rear direction. . The first tape region 400, the second ribbon region 440, and the first tape region 400 are a first pair of diagonal lines 521 (see FIGS. 3 and 5) that connect the first corner portion 321 and the triangular portion 323 that are a pair of corner portions. ) Located on top. The support holes 65 to 68 (see FIG. 2) are provided at substantially central portions of the first tape region 400, the second tape region 410, the first ribbon region 420, and the second ribbon region 440, respectively, in plan view.

  On the right side of the second ribbon area 440 and the front side of the second tape area 410, cassette rectangular holes 681 and 682, which are a pair of rectangular holes long in the front-rear direction in plan view, are provided. The pair of cassette rectangular holes 681 and 682 are arranged side by side at a predetermined interval. The cassette rectangular hole 681 is located on the left side of the cassette rectangular hole 682. Openings (not shown) are provided in the wall surfaces of the pair of cassette rectangular holes 681 and 682 facing each other.

  As shown in FIGS. 3 and 5, in the case of the tube type tape cassette 30, a tape roll 571 around which the tube tape 57 is wound is stored in the first tape region 400. In the second tape area 410, no tape is stored. In the first ribbon area 420, the ribbon spool 42 around which the ink ribbon 60 is wound is stored. In the second ribbon region 440, a ribbon take-up spool 44 for taking up the ink ribbon 60 after being used for printing is housed.

  The tube tape 57 is pulled out from the tape roll behind the winding center 572 of the tape roll 571 in the front-rear direction. In the tape cassette 30 shown in FIGS. 3 and 5, the tube tape 57 is drawn from the right rear portion of the tape roll 571 toward the right front. The conveyance path of the tube tape 57 is formed by at least the wall portions 501, 502, 503, and 504 and the guide portion 505. The wall portion 501 is provided along the outer periphery of the first tape region 400 and extends upward from the bottom plate 306 of the lower case 312. More specifically, the wall portion 501 is provided in an arc shape from a slightly right side of the first tape region 400 toward the right rear side. The vertical height of the right portion of the wall portion 501 gradually decreases toward the right side (see FIG. 8).

  The guide portion 505 is a right rear corner portion of the cassette rectangular hole 681 and is located downstream of the wall portion 501 in the transport path. The guide portion 505 contacts the tube tape 57 regardless of the amount of tape roll 571 stored in the first tape region 400. The wall portion 502 is provided between the wall portion 501 and the guide portion 505. More specifically, the wall portion 502 is provided in an arc shape from slightly behind the left side of the second tape region 410 to the right front side via the rear side, and the left portion of the wall portion 502 is the wall portion 501. And the guide portion 505. The vertical height of the left portion of the wall 502 is gradually reduced toward the left side (see FIG. 8). The right front end of the wall 502 is connected to the left rear portion of the cassette rectangular hole 682.

  The wall portion 503 is provided at a position along the outer periphery of the first tape region 400 and on the opposite side of the wall portion 502 with the tube tape 57 positioned in the transport path in between. The wall portion 503 includes a cylindrical portion 513 and a partition wall 516. The cylindrical portion 513 is the right end portion of the wall portion 504 and is located on the right side of the first tape region 400. The cylindrical portion 513 extends upward from the bottom plate 306 of the lower case 312.

  The partition wall 516 extends along the outer periphery of the first tape region 400 from the cylindrical portion 513, and on the second diagonal line (not shown) intersecting with the first diagonal line 521, the second corner part 322 and the fourth corner part 324 are provided. Is located. The partition wall 516 is along an imaginary line 522 that connects the hole 461 of the tape driving roller 46 provided in the fourth corner 324 and the guide hole 47 provided in the second corner 322. More specifically, the imaginary line 522 extends rearward from the hole 461 toward the guide hole 47. The partition wall 516 extends arcuately from the left end portion along the virtual line 522 to the right rear, crosses the virtual line 522 at the center of the cassette case 31, and extends right rear along the virtual line 522. The rear end portion of the partition wall 516 is integrated with the rear end portion of the wall portion 506 provided along the outer periphery of the second tape region 410. The wall portion 506 is provided in an arc shape from the left side to the front side of the second tape region 410.

  One ends of the wall portion 501, the wall portion 502, and the wall portion 504 that face the tube tape 57 that is transported along the transport path are referred to as end portions 511, 512, and 514, respectively. The end portions 511, 512, and 514 extend in the vertical direction (see FIG. 8). Further, the columnar portion 513 is one end of the wall portion 503 that faces the tube tape 57 that is conveyed along the conveyance path. The end portions 511, 512, and 514 are opposed to one surface of the tube tape 57 (the contraction surface 59 in FIG. 4). The cylindrical portion 513 and the guide portion 505 face the other surface of the tube tape 57 (the non-shrink surface 58 in FIG. 4). The end portion 512 is provided on an imaginary line 523 that connects the end portion 511 and the end portion 514. In other words, the end portions 511, 512, and 514 are arranged along the virtual line 523.

  As shown in FIGS. 3 and 5, a bent portion 533 is erected on the right front corner of the cassette case 31, that is, on the right front side of the first ribbon region 420. The conveyance path of the tube tape 57 drawn from the tape roll 571 is bent at the guide portion 505, passes between the cassette rectangular holes 681 and 682, and extends toward the bent portion 533. The bent portion 533 is a pin that bends the conveyance path of the tube tape 57 along the outer periphery of the first ribbon region 420 at an acute angle. The tape transported toward the left front corner of the cassette case 31 is transported toward the left front corner of the cassette case 31 via the bent portion 533 and guided into an arm portion 34 described later.

  As shown in FIGS. 2, 3, 5, 7, and 8, the front surface of the cassette case 31 is provided with a semicircular groove 84 that is a substantially semicircular groove portion in plan view. The semicircular groove 84 is provided across the vertical direction of the cassette case 31. The semicircular groove 84 is an escape portion provided so that the shaft support portion 121 of the platen holder 12 does not interfere with the cassette case 31 when the tape cassette 30 is mounted on the cassette mounting portion 8.

  A portion of the front wall of the cassette case 31 that extends to the left from the semicircular groove 84 is the arm front wall 35. A wall portion provided in the vertical direction at a position spaced rearward from the arm front wall 35 is an arm back wall 37. A portion extending leftward from the right front portion of the tape cassette 30, which is defined by the arm front wall 35 and the arm rear wall 37 in the front-rear direction, is the arm portion 34. The left end portion of the arm front wall 35 is bent rearward. A gap extending in the vertical direction between the arm front wall 35 and the left end of the arm back wall 37 is a discharge port 341.

  A peripheral wall extending rearward from the right end portion of the arm back wall 37 and extending in parallel with the arm back wall 37 is a head peripheral wall 36. A substantially rectangular space in plan view that passes through the tape cassette 30 in the vertical direction and is defined by the arm back wall 37 and the head peripheral wall 36 is a head insertion portion 39. The head insertion portion 39 is connected to the outside also on the front surface side of the tape cassette 30 via an exposed portion 77 provided on the front surface side of the tape cassette 30. A head holder 74 that supports the thermal head 10 is inserted into the head insertion portion 39.

  A separation unit 61 is provided on the left side of the head insertion unit 39. The separation part 61 is a part that separates the tube tape 57 and the ink ribbon 60 used for printing on the downstream side of the exposed part 77 in the tape transport direction. The separation unit 61 includes restriction members 361 and 362, a ribbon guide wall 38, and the like.

  As shown in FIGS. 2, 7, and 8, a roller support hole 64 is provided on the left side of the separation unit 61 (that is, on the downstream side in the tape transport direction). Inside the roller support hole 64, the tape drive roller 46 is rotatably supported (see FIG. 2). A front surface that is a part of the outer peripheral surface of the tape drive roller 46 is exposed to the outside of the cassette case 31 and is in contact with the tube tape 57.

  As shown in FIGS. 2, 3, 5, 7, and 8, a discharge guide portion 49 is provided on the downstream side of the roller support hole 64 in the transport direction. The discharge guide portion 49 is a plate-like member that is provided slightly spaced forward from the front end portion of the left side surface of the cassette case 31 and extends over the top surface 301 and the bottom surface 302. The discharge guide portion 49 guides the printed tape 50 conveyed via the tape drive roller 46 into a passage formed between the cassette case 31 and the front end portion on the left side surface. The printed tape 50 is discharged from the end of this passage to the outside of the tape cassette 30.

  The tape transport and printing will be described. As shown in FIG. 3, when the tube type tape cassette 30 is mounted on the cassette mounting portion 8, the tube tape 57 is pulled out from the tape roll 571 by the cooperation of the tape driving roller 46 and the movable transport roller 14. . As the tube tape 57 is pulled out, the tape roll 571 rotates clockwise in plan view. The tube tape 57 drawn out from the tape roll 571 passes between the end portion 512 and the column portion 513 and enters the second tape region 410 and travels toward the guide portion 505. The tube tape 57 is conveyed to the arm part 34 via the guide part 505 and the bent part 533. On the other hand, the ribbon take-up spool 44 rotates counterclockwise in plan view as the ribbon take-up shaft 95 is driven, and pulls out the ink ribbon 60 from the ribbon spool 42. As the ink ribbon 60 is pulled out, the ribbon spool 42 rotates counterclockwise in plan view. The ink ribbon 60 drawn from the ribbon spool 42 is conveyed toward the arm unit 34.

  Inside the arm portion 34, the tube tape 57 is guided along a conveyance path extending substantially parallel to the arm front wall 35 and discharged from the discharge port 341 to the exposed portion 77. The ink ribbon 60 is guided along a transport path different from the tape in the arm portion 34, overlapped with the tube tape 57, and discharged from the discharge port 341 to the exposed portion 77.

  In the exposed portion 77, one surface of the tube tape 57 discharged from the discharge port 341 (the contracted surface 59 in FIG. 4) is exposed forward, and the other surface (the non-contracted surface 58 in FIG. 4) faces the thermal head 10. . The thermal head 10 performs printing using the ink ribbon 60 on the tube tape 57 located at the exposed portion 77.

  The ink ribbon 60 after printing is separated from the tube tape 57 by the separation unit 61 and taken up on the ribbon take-up spool 44. The tube tape 57 after printing, that is, the printed tape 50 is guided to the downstream side in the tape conveying direction by the regulating members 361 and 362, and is discharged between the tape driving roller 46 and the movable conveying roller 14 to the discharge guide portion 49. It is conveyed toward. The printed tape 50 is discharged from the discharge guide 49 to the outside. As a result, a printed tape 50 shown in FIG. 4A is obtained.

  As described above, the tape cassette 30 in the present embodiment is configured. In the present embodiment, the end portions 511, 512, and 514 of the wall portions 501, 502, and 504 facing one surface of the tube tape 57 are arranged along a virtual line 523 that connects the end portion 511 and the end portion 514. Yes. For this reason, even when the transported tube tape 57 contacts the end portions 511, 512, and 514, the tube tape 57 is difficult to bend. Therefore, the frictional force between the end portions 511, 512, 514 and the tube tape 57 is prevented from increasing, and the tube tape 57 can be smoothly conveyed. Therefore, the print quality is improved. In particular, as in the present embodiment, when the tape that is the print medium is the heat-shrinkable tube tape 57, the tape becomes stronger than, for example, a thermal paper tape. When the tape becomes stiff, the tape easily swells rearward and easily comes into contact with the end portions 511, 512, and 514. Even in this case, the end portions 511, 512, and 514 are arranged along the virtual line 523, and the tube tape 57 is difficult to bend, so that the tube tape 57 is smoothly conveyed. That is, when the tube tape 57 is a printing medium, the effect of being smoothly conveyed is further increased.

  Moreover, since the wall part 504 is cylindrical, when the tube tape 57 contacts the wall part 504, it contacts a curved surface. For this reason, for example, compared with the case where the tube tape 57 contacts a prismatic rod, the frictional force is reduced. Therefore, the tube tape 57 is conveyed more smoothly. Therefore, the print quality is further improved.

  Moreover, since the cylindrical part 513 is provided, even if the tube tape 57 contacts the cylindrical part 513, the tube tape 57 is smoothly conveyed. Further, in the front-rear direction, the tube tape 57 is drawn from the tape roll 571 behind the winding center 572 of the tape roll 571, and the columnar part 513 is positioned behind the winding center 572 of the tape roll 571. In this case, the distance between the cylindrical portion 513 and the wall portion 502 (end portion 512) is shorter than when the cylindrical portion 513 is positioned in front of the winding center 572 of the tape roll 571. For this reason, even when the storage amount of the tape roll 571 is changed and the diameter of the tape roll 571 is changed, the fluctuation of the transport path of the tube tape 57 is caused by the short distance between the cylindrical portion 513 and the wall portion 502 (end portion 512). Limited to the distance between. Therefore, the fluctuation | variation of the conveyance path | route of the tube tape 57 can be decreased. Therefore, even when the storage amount of the tape roll 571 changes, the tube tape 57 is smoothly conveyed.

  In addition, the distance between the tube tape 57 drawn from the tape roll 571 and the columnar portion 513 is shorter than when the columnar portion 513 is positioned in front of the winding center 572 of the tape roll 571. For this reason, even when the tube tape 57 is consumed and the diameter of the tape roll 571 becomes small, the fluctuation | variation of the conveyance path | route of the tube tape 57 can be decreased. Therefore, the tube tape 57 is smoothly conveyed.

  The tape roll 571 and the ribbon take-up spool 44 are separated by a partition wall 516. For this reason, even if the winding of the tape roll 571 is loosened and the diameter of the tape roll 571 is increased, the ribbon take-up spool 44 and the tape roll 571 are prevented from contacting each other. Therefore, it is possible to prevent the tape roll 571 from coming into contact with the ribbon take-up spool 44 and becoming difficult to rotate. Therefore, the tube tape 57 is reliably pulled out and the printing quality is improved.

  In particular, when the tube tape 57 is used as in the present embodiment, the waist of the tape becomes stronger than a thermal paper tape or the like. For example, when the tape is weak, when the tape is loosened in the tape roll, the tape is pulled for transportation, so that the tape is wound again and the looseness may be eliminated to some extent. However, once the tape becomes stiff, once the tape winding in the tape roll 571 is loosened, it is difficult to eliminate the loosening even if the tape is pulled for conveyance. For this reason, when the partition 516 is not provided, the possibility that the tape roll 571 and the ribbon take-up spool 44 come into contact with each other increases. However, in this embodiment, since the partition 516 is provided, the ribbon take-up spool 44 and the tape roll 571 are prevented from contacting each other. Therefore, it is possible to prevent the tape roll 571 from becoming difficult to rotate. That is, when the tube tape 57 is a printing medium, the effect of preventing the tape roll 571 from becoming difficult to rotate is further increased. Moreover, since the tube tape 57 is reliably pulled out from the tape roll 571, it is possible to ensure the printing quality.

  The first tape region 400 and the ribbon take-up spool 44 are aligned on the first diagonal line 521. For this reason, it is easier to secure a storage space for the first tape region 400 and the ribbon take-up spool 44 than in the case where the first tape region 400 and the ribbon take-up spool 44 are arranged in the front-rear direction or the left-right direction. Therefore, the partition 516 can be disposed between the tape roll 571 and the ribbon take-up spool 44 without increasing the size of the entire cassette case 31. Further, since it is easy to secure a storage space between the first tape region 400 and the ribbon take-up spool 44, the partition 516 can be provided without reducing the diameters of the tape roll 571 and the ribbon take-up spool 44. Therefore, the capacity of the tube tape 57 and the ink ribbon 60 can be ensured.

  For example, when there is a gap between the partition wall 516 and the cylindrical portion 513, the swelled tube tape 57 contacts the end of the partition wall 516 forming the gap. For this reason, the tape roll 571 may be difficult to rotate. In the present embodiment, since the partition wall 516 extends from the cylindrical portion 513, no gap is formed. Therefore, the tape roll 571 rotates smoothly. Therefore, the print quality is improved.

  In the tape cassette 30, a hole 461 is provided in the tape driving roller 46 of the fourth corner 324, and a guide hole 47 is provided in the second corner 322. When the tape cassette 30 is mounted in the cassette mounting portion 8, the tape drive shaft 100 is inserted into the hole 461, and the guide shaft 120 is inserted into the guide hole 47 (see FIG. 3). For this reason, the tape cassette 30 is mounted on the cassette mounting portion 8 while the hole portion 461 and the guide hole 47 are guided by the tape drive shaft 100 and the guide shaft 120. Since the partition wall 516 is along a virtual line 522 connecting the hole portion 461 and the guide hole 47, the center of gravity of the tape cassette 30 is closer to the virtual line 522 compared to the case where the partition wall 516 is not provided. Therefore, the posture when the tape cassette 30 is mounted in the cassette mounting portion 8 while the hole portion 461 and the guide hole 47 are guided by the tape drive shaft 100 and the guide shaft 120 is stabilized. Therefore, when the tape cassette 30 is mounted on the cassette mounting portion 8, the possibility that the tape cassette 30 tilts can be reduced.

  In the above embodiment, the first tape area 400 is an example of the “tape storage area” in the present invention. The wall portion 501 is an example of the “first wall portion” in the present invention. The wall 502 is an example of the “second wall” in the present invention. The wall portion 503 is an example of the “third wall portion” in the present invention. The wall portion 504 is an example of the “fourth wall portion” in the present invention.

  In addition, this invention is not limited to said embodiment, A various change is possible. For example, the end portion 512 may not be positioned on the virtual line 523 that accurately connects the end portion 511 and the end portion 514. The end portion 512 may be provided at a position along the virtual line 523. For example, the end portion 512 may be positioned between a virtual line 524 (see FIG. 3) drawn leftward from the rear end 507 of the cylindrical wall portion 504 and the virtual line 523. In the case where the end portion 512 is located between the virtual line 524 and the virtual line 523, it is assumed that the tube tape 57 is disposed so as to pass through the rear end 507 of the cylindrical wall portion 504 by mistake during manufacture. . In this case, although not shown, the tube tape 57 drawn out from the tape roll 571 is bent toward the rear end 507 of the wall portion 504 at the end portion 512. For this reason, the frictional force between the end portion 512 and the tube tape 57 increases, and the force for pulling out the tube tape 57 increases. Therefore, by inspecting the pulling force of the tube tape 57, it is possible to detect that the tube tape 57 has been mistakenly arranged at the time of manufacture.

  Moreover, although the wall part 504 was cylindrical shape, another shape may be sufficient. For example, a cylinder or a prism may be provided at the same position as the end 514. In this case, the cylinder and the prism are examples of the “fourth wall” in the present invention. Moreover, although the guide hole 47 was provided, it does not need to be provided. In this case, the guide shaft 120 may not be provided. Further, the partition wall 516 may be provided with one or more vertical slits. Further, the partition wall 516 may not be provided.

  Moreover, although the site | part which forms a conveyance path | route facing the edge part 512 was the cylindrical part 513, it is not limited to this. For example, the wall part connected to the partition 516 may be used instead of the cylinder. Moreover, the roller 519 which can be rotated by making an up-down direction into an axis line like the tape cassette 32 which concerns on the modification shown in FIG. 9 may be sufficient. The roller 519 has a vertical hole at the center, and the cylinder 520 is positioned inside the hole and rotates around the cylinder 520. When the roller 519 is provided, the partition wall 516 may be close to the roller 519. When the roller 519 is provided, the frictional force with the tube tape 57 can be reduced as compared with the case where the roller 519 is not provided. Therefore, the tube tape 57 is conveyed more smoothly. Therefore, the print quality is further improved.

  The tape stored in the first tape region 400 is the tube tape 57, but is not limited to this. For example, a printing tape, a thermal paper tape, or the like may be arranged in the first tape region 400. Even in this case, the same effects as those of the tube tape 57 can be obtained. When a thermal paper tape is disposed, the ink ribbon 60 may not be provided in the cassette case 31.

DESCRIPTION OF SYMBOLS 1 Tape printer 30, 32 Tape cassette 31 Cassette case 57 Tube tape 400 1st tape area | region 501 Wall part 501,502,503,504 Wall part 505 Guide part 511,512,514 End part 513 Cylindrical part 519 Roller 522,523 , 524 Virtual line 571 Tape roll 572 Winding center

Claims (6)

A cassette case having an upper surface, a bottom surface, a front surface, and a pair of side surfaces in a front-rear direction that is a direction orthogonal to the front surface;
A tape storage area in which a tape roll around which a tape as a printing medium is wound is stored;
A wall provided along the outer periphery of the tape storage area, the first wall forming a tape transport path extending from the tape roll; and
A guide portion that is provided on the downstream side of the transport path from the first wall portion, and that contacts the tape regardless of the amount of tape roll stored in the tape storage region;
A second wall portion provided between the first wall portion and the guide portion and forming the transport path;
A third wall part provided on the opposite side of the second wall part across the tape and forming the transport path;
A fourth wall portion provided between the second wall portion and the guide portion;
One end of each of the first wall portion, the second wall portion, and the fourth wall portion that faces the tape faces one surface of the tape,
The one end of the third wall portion facing the tape and the guide portion are opposed to the other surface of the tape,
One end of the second wall portion facing the tape is provided at a position along a straight line connecting one end of the first wall portion and the fourth wall portion facing the tape. Tape cassette.   The tape cassette according to claim 1, wherein one end of the third wall portion facing the tape is a column extending in the vertical direction. The tape is pulled out from the tape roll behind the winding center of the tape roll in the front-rear direction,
3. The tape cassette according to claim 1, wherein one end of the third wall portion facing the tape is located rearward from the winding center of the tape roll in the front-rear direction.   The tape cassette according to claim 1 or 2, wherein the fourth wall portion is a cylinder.   The tape cassette according to claim 1, wherein the tape is a heat-shrinkable tube.   The tape cassette according to claim 1, wherein the third wall portion is a roller that is rotatable about the vertical direction as an axis.

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