JP4534646B2 - Roll cassette and tape printer - Google Patents

Description

  The present invention is used in a tape printer provided with a conveying means for conveying a long roll sheet and a printing means for printing on the roll sheet. In particular, the present invention relates to a roll cassette that is supported in a detachable manner in a printing apparatus, and in particular, a substantially flat sliding member that can slide in the axial direction of the core on one end face of a roll sheet wound around the core. Is attached with an adhesive sheet or the like, so that the side end face of the roll sheet is held in a wound state while absorbing a change in dimension of the roll sheet in the tape width direction due to a change in humidity or the like, thereby preventing the roll sheet from being scattered. It relates to a roll cassette that can be used. Further, the present invention relates to a tape printing apparatus capable of repeatedly drawing a roll sheet by a certain length accurately because the roll cassette is detachably supported in the tape printing apparatus.

  2. Description of the Related Art Conventionally, a tape printer that prints characters and the like on a long sheet in which a release sheet is bonded to an adhesive sheet via a thermal head is known. In such a tape printing apparatus, a roll sheet wound around a core, a roll sheet holder to which the core is rotatably mounted, and a support mechanism that detachably supports the roll sheet holder in the tape printer. And a conveyance means for pulling out and conveying the roll sheet from the roll sheet holder. In such a tape printer, usually, as a long roll sheet, a transparent film sheet formed in a predetermined width, a roll sheet having a release sheet attached to one side of the film sheet via an adhesive, and self There is a heat-sensitive sheet (so-called thermal paper) having coloring properties, and any of these roll sheets is rotatably supported in the tape printing apparatus while being wound around a core, and is drawn out through a conveying means. Printed by the thermal head.

  In addition, when full-color printing is performed on this roll sheet (excluding the thermal sheet) via a thermal head, generally a plurality of inks composed of cyan (C), magenta (M), yellow (Y), and the like are sequentially added to a fixed length. A ribbon cassette containing an ink ribbon applied in the length direction is installed. Then, a thermal head is pressed on the roll sheet or the like via this ink ribbon, and any one of magenta (M), cyan (C), yellow (Y), etc. is printed for a certain length, Again, the roll sheet is drawn by the predetermined length, and any one of the other colors is printed. Then, by repeating this, full-color printing is performed on the roll sheet by a certain length.

  However, after the roll sheet holder is mounted on the tape printing device in a high humidity environment, if the tape printing device is placed in a low humidity environment, the tape width direction of the roll sheet wound around the core Because the size of the roll sheet shrinks, the pressing force of the roll sheet holder that presses the side end surface of the roll sheet becomes weak or disappears, and the roll sheet is scattered by the elastic restoring force of the roll sheet wound around the core, In the case of full-color printing or the like, there is a problem that the roll sheet cannot be repeatedly drawn accurately for a certain length.

Therefore, the present invention has been made to solve the above-described problems, and has a substantially flat plate-like shape that is slidable in the axial direction of the core on one end surface of the roll sheet wound around the core. By attaching the sliding member with an adhesive sheet or the like, the side end face of the roll sheet is held in a wound state while absorbing the dimensional change in the tape width direction of the roll sheet due to a change in humidity, etc. An object of the present invention is to provide a roll cassette that can prevent the above-described problem. Also,
Since the roll cassette is detachably supported in the tape printing apparatus, an object of the present invention is to provide a tape printing apparatus that can repeatedly draw a roll sheet accurately for a certain length.

The roll cassette according to claim 1 includes a conveying unit for conveying a long roll sheet, a printing unit for printing on the roll sheet , and a plunger type switch for specifying the type of the roll sheet. In a roll cassette that is used in a tape printing apparatus having a sensor and a flat portion on which the sensor is arranged , the roll sheet is wound and supported in a removable state in the tape printing apparatus The roll cassette has a cylindrical core around which the roll sheet is wound, and a support shaft that is fitted into one end of the core and is rotatably supported inside the core. A unit holder, and the first unit holder has a flange portion formed on an outer periphery of an outer end surface portion of the support shaft, and a vertical direction at a substantially central portion in a left-right direction of the outer end surface portion of the flange portion. To a mounting member to be projected, said with the lower attachment member are formed so as to protrude from the flange portion, a plate-shaped protruding portion to which the the lower surface flat portion corresponds, in the plate-shaped protrusions And a detected portion made of a through hole or a notch formed at a position facing the sensor, and the mounting member is fitted into a groove provided in the tape printer from above, whereby the first with the unit holder is supported detachably being positioned so as not to rotate in the tape printing apparatus, the lower surface of the projecting portion and said flat portion is facing, the presence or absence of contact between the sensor and the projecting portion The type of roll sheet is specified.

  A roll cassette according to a second aspect of the present invention is the roll cassette according to the first aspect, wherein the second unit holder is engaged with the other end side of the core and is brought into contact with one end surface of the roll sheet. It is characterized by having.

Furthermore, the tape printing apparatus according to claim 3 is provided with a conveying means for conveying a roll sheet wound around a cylindrical core, a printing means for printing on the roll sheet, and the roll sheet being wound. And a support mechanism for supporting the roll cassette in a detachable state inside the roll cassette, wherein the roll cassette is the roll cassette according to claim 1 or 2, wherein the roll cassette includes the roll cassette. A flat portion on which a sensor comprising a plunger type switch corresponding to the lower surface of the protruding portion and having a type of roll sheet specified by the presence or absence of contact with the protruding portion is disposed, and the support mechanism includes the roll cassette The mounting member has a groove portion to be fitted from above.

In the roll cassette according to claim 1, the first unit holder is positioned so as not to rotate and is detachably supported by fitting the mounting member of the first unit holder into a groove provided in the tape printer from above. Has been. A support shaft of the first unit holder is rotatably fitted to one end of a cylindrical core around which the roll sheet is wound.
As a result, the mounting member of the first unit holder is guided by the groove portion of the tape printer, so that it functions as a guide member when the roll cassette is mounted on the tape printer, and the roll cassette can be easily mounted on the tape printer. can do. Moreover, since the attachment member of a 1st unit holder functions so that this 1st unit holder may be positioned and fixed at the time of conveyance of a roll sheet, the positioning to the roll sheet conveyance direction of a core can be performed reliably. In addition, since the roll cassette is detachably supported in the tape printer via the first unit holder, it is possible to easily and quickly perform the replacement mounting operation of a plurality of types of roll cassettes.

  In addition, since the first unit holder is positioned and fixed via the mounting member, it is possible to position the detected part in the sensor means side direction by providing the detected part in the first unit holder. The type of roll sheet can be reliably detected via the detected portion.

  In the roll cassette according to claim 2, since the second unit holder engaged with the other end side of the winding core is brought into contact with one end surface of the roll sheet, the winding core is rotated by pulling out the roll sheet. At the same time, the second unit holder also rotates to guide the width direction of the roll sheet, and it is possible to prevent the roll sheet from skewing outward in the second unit holder side.

  Further, in the tape printer according to claim 3, the support mechanism for supporting the roll cassette around which the roll sheet is wound in a state where the roll sheet is detachable is fitted from above the mounting member of the first unit holder of the roll cassette. Therefore, the roll cassette can be easily mounted on the tape printing apparatus, and a plurality of types of roll cassettes can be replaced and mounted easily and quickly.

  Hereinafter, an embodiment embodying a tape printer according to the present invention will be described in detail with reference to the drawings. First, a schematic configuration of the main body housing of the tape printer according to the present embodiment will be described with reference to FIGS. FIG. 1 is a perspective view showing a schematic configuration of a main body housing of the tape printer according to the present embodiment. FIG. 2 is a plan view showing a schematic configuration of the main body housing of the tape printer according to the present embodiment. In both figures, the upper cover attached to the main body housing of the tape printing apparatus via the upper frame 3 (see FIG. 3 etc.) so as to be freely opened and closed is removed. 3A and 3B show the internal structure of the tape printer according to this embodiment. FIG. 3A is a perspective view from the second gear train side, and FIG. 3B is a side view of the second gear train side. 4A and 4B show the internal structure of the tape printer according to the present embodiment, in which FIG. 4A is a perspective view from the first gear train side, and FIG. 4B is a side view of the first gear train side. FIG. 5 shows the internal structure when the upper frame of the tape printer according to the present embodiment is removed, (A) is a perspective view from the first gear train side, and (B) is a side view of the first gear train side. It is. FIG. 6 is a perspective view from the second gear train showing a case where the upper frame of the tape printer according to the present embodiment is removed and a ribbon cassette is mounted.

  As shown in FIGS. 1 and 2, the main body housing 2 of the tape printer 1 has a roll sheet 10 wound around a winding core 11A (see FIG. 1) in a lower frame 7 having side walls 5 and 6 disposed on both left and right sides. 13), the roll sheet unit 11 rotatably supported in a wound state, the transport mechanism unit 15 as a transport unit capable of transporting the roll sheet 10 in both forward and reverse directions, and the transport mechanism unit 15. And a cutting mechanism unit 16 for cutting the roll sheet 10. Further, the upper frame 3 (see FIG. 3 and the like) is disposed on the upstream side of the cutting mechanism 16 in the forward conveyance of the roll sheet 10 and forms an image for forming a predetermined image on the roll sheet 10. An image forming mechanism 17 (see FIG. 3) is provided as a means. A control circuit unit (not shown) that drives and controls each of the mechanism units 15, 16, 17 and the like according to a command from an external personal computer or the like is provided below the lower frame 7.

The roll sheet unit 11 is detachably attached to one end in the lower frame 7. That is, in the lower frame 7, a pair of unit support portions 16A and 16B in which mounting members 14A and 14B projecting outward from the unit holders 12 and 13 constituting the roll sheet unit 11 are detachably fitted. Is provided. The roll sheet unit 11 is detachably mounted in the lower frame 7 by fitting the mounting members 14A and 14B of the roll sheet unit 11 into the unit support portions 16A and 16B.

  As shown in FIGS. 4 and 5, the transport mechanism unit 15 includes a platen roller 21 that is also a component of the image forming mechanism unit 17 and a grip roller 22 disposed on the upstream side of the platen roller 21. I have. A pair of driven rollers 23 and 23 are disposed on the upper frame 3 at positions facing the grip roller 22 and the roll sheet 10. Each of the driven rollers 23, 23 is urged by a spring or the like so as to be pressed toward the grip roller 22, and is rotatably supported. The platen roller 21 and the discharge roller 22 are moved through the first gear train 25 by the forward / reverse drive of the first drive motor 24 including a stepping motor disposed on the side wall 5 of the lower frame 7. The sheet 10 is rotated so as to be conveyed in the forward direction (discharge direction) and in the reverse direction (retraction direction). Further, a roll sheet take-up gear 13A is provided on the outer peripheral surface of the unit holder 13 of the roll sheet unit 11, and the roll sheet 10 can be taken up by being connected to the first gear train 25 of the transport mechanism unit 15 as will be described later. It is configured.

As shown in FIG. 6, when performing color printing on the roll sheet 10, a ribbon cassette 71 is mounted on the lower frame 7 so that the platen roller 21 is covered with the ink ribbon. Further, a ribbon take-up spool (not shown) for taking up the ink ribbon incorporated in the ribbon cassette 71 is taken up via the first gear train 25 as well as being conveyed in the discharge direction of the roll sheet 10 as will be described later. Is rotated in the direction (see FIG. 13).
A thermal head 27 constituting the image forming mechanism 17 is disposed on the upper frame 3 at a position facing the platen roller 21 and the roll sheet 10 as described later (see FIG. 7). The thermal head 27 is urged and supported so as to be pressed toward the platen roller 21 by a spring or the like as will be described later. Further, the thermal head 27 causes the roll sheet 10 to move forward through the second gear train 28 by the forward rotation drive of the second drive motor 30 configured by a DC motor or the like disposed on the side wall 6 of the lower frame 7. When the roll sheet 10 is conveyed in the reverse direction by the reverse rotation drive of the second drive motor 30, the platen roller 21 resists the pressing force of a spring or the like. It is lifted away. Therefore, the roll sheet 10 is conveyed in the forward direction (the direction in which it is pulled out) by the rotation of the platen roller 21 and the grip roller 22, and is conveyed in the reverse direction (the direction in which it is pulled in) by the reverse rotation of the grip roller 22.

  As shown in FIGS. 1 and 2, a pair of resin guide members 4A and 4B to which an adhesive such as polyacetal is difficult to attach is attached and detached by screws or the like on the upstream side of the left and right edges of the platen roller 21. It is attached as possible. On the upper surface of each of the guide members 4A and 4B, outer pressing portions 4C and 4D that are in contact with the side surface in the width direction of the roll sheet 10 and are guided in the conveying direction are formed to protrude upward by a predetermined height. . Thus, the roll sheet 10 is guided along the transport path by the upper surfaces of the guide members 4A and 4B and the opposing surfaces of the outer pressing portions 4C and 4D, and is guided to the upper side of the platen roller 21.

A paper discharge roller unit 37 is disposed immediately above the downstream edge of the cutter plate 35 (see FIG. 9 and the like) constituting the cutting mechanism 16. As will be described later, the paper discharge roller unit 37 is provided with a pair of paper discharge rollers 38 and 38 (see FIG. 12). The paper discharge roller unit 37 cooperates with the cutter plate 35 to sandwich the roll sheet 10 and has a first gear train. When the roll sheet 10 is conveyed in the reverse direction, it is configured to stop and slide while applying a predetermined pressing force. The roll sheet 10 conveyed between the paper discharge roller unit 37 and the cutter plate 35 is adjusted to a predetermined length from the sheet discharge port 2A formed on the front surface of the main body housing 2 by the cutting mechanism 16. After cutting, the paper is discharged (see FIG. 1).

Next, the pressure release mechanism of the image forming mechanism 17 will be described with reference to FIGS. FIG. 7 is a front view showing a state in which the thermal head 27 constituting the image forming mechanism unit 17 of the tape printer 1 according to the present embodiment is released from the platen roller 21. FIG. 8 is an enlarged front view showing the configuration of the second gear train 28 of the tape printer 1 according to the present embodiment.
As shown in FIG. 7, the image forming mechanism 17 includes a line-type thermal head 27 as a printing unit having a length substantially equal to the maximum width dimension of the roll sheet 10 that can be mounted on the roll sheet unit 11, and A thermal head 27 and a platen roller 21 facing each other with the roll sheet 10 interposed therebetween are provided. Further, the thermal head 27 is supported in a substantially U-shape so as to be movable up and down with respect to a rotation shaft 43 that is pivotally supported by the side walls 41 and 42 of the upper frame 3, and the platen roller 21 is rotated at the outer tip. Each support member 44 and 44 in which the recessed part inserted by a shaft is formed is attached. Further, eccentric cams 45, 45 having a predetermined diameter are attached to positions of the rotating shaft 43 facing the support members 44. The thermal head 27 rotates the cam gear 57 attached to one end of the rotating shaft 43 constituting the second gear train 28, so that the eccentric cams 45, 45 rotate every 180 degrees, and the support members 44, 44 moves up and down and is brought into contact with or separated from the platen roller 21. When the thermal head 27 comes into contact with the platen roller 21, the eccentric cams 45, 45 are configured to be separated from the support members 44, 44 by a predetermined distance.

  Further, the upper side of the rotary shaft 43 and the thermal head 27 is covered with a top plate 46 that is horizontally mounted between the side walls 41 and 42. Further, between the thermal head 27 and the top plate 46, head springs 48, 48 are mounted at a predetermined interval, and the thermal head 27 is configured to be pressed against the platen roller 21 with a predetermined pressing force.

On the other hand, as shown in FIG. 8, the configuration of the second gear train 28 includes a motor drive gear 51 attached to the shaft of the second drive motor 30, a first cam double gear 52 that meshes with the motor drive gear 51, A pair of first and second planetary gears 53A and 53B that are pivotally supported by the rotation shaft of the first cam double gear 52 and mesh with the first cam double gear 52, and a second that meshes with the first planetary gear 53A. The cam double gear 54, a third cam double gear 55 that meshes with the second cam double gear 54, a cam idle gear 56 that meshes with the third cam double gear 55, and a cam gear 57 that meshes with the cam idle gear 56. Yes. On the inner side surface of the cam gear 57, the cam portion 57A protrudes inward in an arc shape at an angle of about 180 degrees, and the center position of the arc is formed to face the short diameter portion of the eccentric cam 45. Yes. Further, a switch SW1 that is turned ON / OFF by rotating and contacting the cam portion 57A is provided on the side wall 42. The switch SW1 is connected to a control circuit unit (not shown).
The other second planetary gear 53B meshes with a lead screw gear 58 attached to one end of a lead screw (see FIG. 10) described later.

Next, the operation of the second gear train 28 will be described with reference to FIG. When printing is started, it is necessary to press the thermal head 27 against the platen roller 21 with a predetermined pressing force. Therefore, first, the second drive motor 30 is rotated counterclockwise, and the first cam double gear 52 and the first planetary gear are rotated. The gear 53A, the second cam double gear 54, the third cam double gear 55, the cam idle gear 56, and the cam gear 57 are rotated in this order. Accordingly, since the cam gear 57 rotates counterclockwise, the eccentric cams 45 and 45 simultaneously rotate counterclockwise. Then, after the cam portion 57A formed on the inner side surface of the cam gear 57 comes into contact with the switch SW1 and outputs an ON signal, the rotation of the second drive motor 30 is stopped so that the short diameter of each eccentric cam 45 is directly above. The thermal head 27 is pressed against the platen roller 21 with a predetermined pressing force via the head springs 48, 48.

  When printing is completed, the thermal head 27 needs to be separated from the platen roller 21. Therefore, first, the second drive motor 30 is rotated counterclockwise so that the first cam double gear 52 and the first planetary gear 53A are rotated. The second cam double gear 54, the third cam double gear 55, the cam idle gear 56, and the cam gear 57 are rotated in this order. Thereby, since the cam gear 57 rotates again counterclockwise, the eccentric cams 45 and 45 simultaneously rotate counterclockwise. Then, the cam portion 57A formed on the inner side surface of the cam gear 57 is separated from the switch SW1 and an OFF signal is output, and the control circuit portion that receives this OFF signal stops after rotating the second drive motor 30 by a predetermined amount. Let As a result, the long diameters of the eccentric cams 45, 45 are positioned directly above, and the thermal head 27 is lifted against the pressing force of the head springs 48, 48 and is separated from the platen roller 21.

  Next, the mechanism of the cutting mechanism 16 will be described with reference to FIGS. 9A and 9B are views showing the cutting mechanism unit 16 with the paper discharge roller unit 37 of the tape printing apparatus 1 according to the present embodiment removed, where FIG. 9A is a plan view and FIG. 9B is a cross-sectional view along line BB in FIG. (C) is a C arrow view in (A). FIG. 10 is a front sectional view showing the carriage mechanism of the cutting mechanism unit 16 of the tape printer 1 according to this embodiment. FIG. 11 is a diagram showing driving by the second gear train 28 of the cutting mechanism unit 16 of the tape printer 1 according to this embodiment, and FIG. 11A is a partially enlarged front view showing driving when the roll sheet 10 is cut. (B) is a partially enlarged front view showing driving at the time of home position movement.

As shown in FIGS. 9 and 10, the cutting mechanism unit 16 includes a cutter plate 35 having a substantially horizontal L-shaped cross section that receives the roll sheet 10 and is placed on the side walls 5 and 6 on the downstream side of the platen roller 10. A cutter unit 60 that cuts the roll sheet 10 perpendicularly to the traveling direction while moving along the upstream end surface of the cutter plate 35, and the cutter unit 60 in the cutting direction (left and right direction in FIG. 9A). And a cutter transport mechanism that reciprocates.
When the roll sheet 10 is being printed or conveyed, the cutter unit 60 stands by at a home position that avoids the path of the roll sheet 10 as shown in FIG. The cutter unit 60 includes a cutter carriage 61, a cutter blade 62 whose blade tip is attached to the upper side of the cutter carriage 61 with a predetermined angle inclined in the cutting direction (arrow D direction), and an upper portion of the cutter blade 62. The cutter cap 63 is attached.

  As shown in FIGS. 9B and 9C, the cutter cap 63 has a lower end portion on the cutting edge side of the cutter blade 62 that covers the upper surface of the end edge portion on the upstream side of the conveyance path of the cutter plate 35, and the cutter cap 63. The upstream end surface portion of the cutter plate 35 is extended downward so as to be located below the upper surface of the cutter plate 35 by a predetermined dimension (about 1 mm in this embodiment). Thereby, when the cutter unit 60 is moved in the cutting direction, the lower end portion of the cutter cap 63 rides on the roll sheet 10 and pushes it downward, so that tension is applied to the roll sheet 10 and the cutter blade 62 is rolled. The sheet 10 can be reliably pressed at a right angle, and can be smoothly cut while suppressing the occurrence of jam or the like. In addition, since the cutting edge of the cutter blade 62 is pressed obliquely downward from the printing surface side of the roll sheet 10, fluffing and the like appear in the back surface side direction of the roll sheet 10, so that a good printing surface can be formed. it can.

As shown in FIG. 10, the cutter carriage 61 is slidably inserted into the guide shaft 65 supported by the both side walls 5 and 6 of the lower frame 7, and the both side walls 5 are substantially parallel to the guide shaft 65.
, 6 are screwed into a lead screw 66 that is rotatably supported. A lead screw gear 58 constituting the second gear train 28 is attached to the outer edge of the side wall 6 of the lead screw 66 via a lead screw clutch spring 67. Further, a switch SW2 that contacts the cutter carriage 61 and outputs an ON signal when the cutter carriage 61 is located at the home position is attached to the side wall 5. Further, a switch SW3 that abuts against the cutter carriage 61 and outputs an ON signal when attached to the cut end position is attached to the side wall 6. The switches SW2 and SW3 are connected to the control circuit unit.

As shown in FIG. 11A, the cutter unit 60 is driven when the roll sheet 10 is cut. First, the second drive motor 30 is rotated in the clockwise direction, the first cam double gear 52, the first planetary gear 53A, and the lead screw. The gear 58 is rotated in this order. When the second drive motor 30 is rotated in the clockwise direction, the second planetary gear 53B and the second cam double gear 54 do not mesh with each other.
Then, the lead screw gear 58 rotates counterclockwise, and the lead screw 66 connected via the lead screw clutch spring 67 is rotated counterclockwise. Subsequently, the cutter carriage 61 screwed to the lead screw 66 is cut along the guide shaft 65 and the lead screw 66 by the counterclockwise rotation of the lead screw 66 (FIGS. 9A and 10). When the cutting end position is reached, the lead screw clutch spring 67 comes to the tightening side, so that the cutter carriage 61 is pressed against the switch SW3 and an ON signal is sent from the switch SW3. It is output to the control circuit unit.

On the other hand, as shown in FIG. 11B, the control circuit unit that has received the ON signal from the switch SW3 determines that the cutter carriage 61 has reached the cutting end position, that is, determines that the cutting of the roll sheet 10 has ended. Thus, the second drive motor 30 is rotated in the reverse rotation direction (counterclockwise), and the first cam double gear 52, the second planetary gear 53B, and the lead screw gear 58 are rotated in this order. When the second drive motor 30 is rotated in the counterclockwise direction, the first planetary gear 53A and the second cam double gear 54 mesh with each other as described above to transmit the drive (see FIG. 8).
Then, the lead screw gear 58 rotates clockwise, and the lead screw 66 connected via the lead screw clutch spring 67 is rotated clockwise. Subsequently, the cutter carriage 61 screwed to the lead screw 66 is rotated in the clockwise direction of the lead screw 66 along the guide shaft 65 and the lead screw 66 in the home position direction (FIG. 9A and FIG. 10). When the home position is reached, the cutter carriage 61 contacts the switch SW2, and an ON signal is output from the switch SW2 to the control circuit unit. When the second drive motor 30 rotates in the clockwise direction with the cutter carriage 61 in contact with the switch SW2, the lead screw clutch spring 67 is on the loose side, so the rotational driving force of the lead screw gear 58 is The lead screw 66 is not transmitted, and the lead screw 66 does not rotate.
On the other hand, the control circuit unit that has received the ON signal from the switch SW2 determines that the cutter carriage 61 has reached the home position, stops the second drive motor 30, and ends the cutting process of the roll sheet 10 by the cutter unit 60. To do.

  Next, the configuration of the transport roller unit 37 constituting the transport mechanism unit 15 will be described with reference to FIG. 12A and 12B show the paper discharge roller unit 37 of the tape printer 1 according to the present embodiment, where FIG. 12A is a front view and FIG. 12B is a cross-sectional view taken along line AA in FIG.

As shown in FIG. 12, the gear shaft 81 </ b> A of the paper discharge roller gear 81 that constitutes the first gear train 25 is rotatably supported on the side wall 5 of the lower frame 7. In addition, the discharge roller unit 37 has one end side rotatably supported on the side wall 6 via the first clutch spring 81 and the other end side connected to the gear shaft 81A of the discharge roller gear 81 via the second clutch spring 82. It is rotatably supported.
The first clutch spring 82 becomes a tightening side when the paper discharge roller unit 37 rotates in the direction in which the roll sheet 10 is pulled in (counterclockwise in FIG. 12B), and the paper discharge roller unit 37. Actuate to stop. Further, the first clutch spring 82 becomes a loose side when the discharge roller unit 37 rotates in the direction of discharging the roll sheet 10 (clockwise in FIG. 12B), and the discharge roller unit 37 becomes the loose side. It operates so as not to prevent the rotation of the unit 37.

  The drive of the paper discharge roller gear 81 is transmitted to the paper discharge roller unit 37 via the second clutch spring 83. The second clutch spring 83 is on the loose side when the paper discharge roller gear 81 rotates the paper discharge roller unit 37 in the pulling direction of the roll sheet 10 (counterclockwise in FIG. 12B), and Since the first clutch spring 82 is on the tightening side, when the paper discharge roller unit 37 is stopped by the first clutch spring 82, the paper discharge roller gear 81 is idled. On the other hand, the second clutch spring 83 is on the tightening side when the discharge roller gear 81 rotates the discharge roller unit 37 in the discharge direction of the roll sheet 10 (clockwise in FIG. 12B), and Since the first clutch spring 82 is on the loose side, the paper discharge roller unit 37 rotates in the same direction as the paper discharge roller gear 81 (clockwise in FIG. 12B).

  The paper discharge roller unit 37 has a pair of substantially cylindrical paper discharge rollers 84 and 84 attached coaxially. The cutter plate 35 having a substantially L-shaped cross section has the outer surface on the upper side and the outer surface on the front side, and the central portions of the discharge rollers 84 and 84 and the maximum thickness of the roll sheet 10. It is supported by the side walls 5 and 6 so as to form a gap slightly larger than the dimension. Further, through holes 86, 86, 86, 86 are formed at positions facing the left and right end surfaces of the respective discharge rollers 84, 84 of the cutter plate 35. Further, a substantially flat sheet pressing portion 84A extending obliquely outward and reaching into each of the through holes 86, 86, 86, 86 is provided at predetermined center angles on both left and right end surface portions of the respective discharge rollers 84, 84. (In this embodiment, it is formed every approximately 36 degrees). Accordingly, each sheet pressing portion 84A presses the roll sheet 10 against the upper surface of the cutter plate 35 with a predetermined pressing force, and thus a nip force necessary for discharging the roll sheet 10 is generated.

  Further, guide members 87A and 87B that are in contact with the side surface in the width direction of the roll sheet 10 and are guided in the transport direction are detachably attached to the upper surface of the cutter plate 35 facing the paper discharge roller unit 37. Each of the guide members 87A and 87B is a resin molded product such as polyacetal to which an adhesive is difficult to adhere. Further, the end surface of each guide member 87A, 87B on the side of the roll sheet 10 extends upward by a predetermined height, and is formed so as to surely abut on the side surface in the width direction of the roll sheet 10. In addition, substantially disc-shaped discharge side rollers 88A and 88B for pressing the upper surface of the roll sheet 10 from the upper side are coaxially positioned at positions slightly inside the inner end surfaces of the guide members 87A and 87B of the discharge roller unit 37. Is provided. Thus, the roll sheet 10 is guided in the transport direction by the guide members 87A and 87B and the paper discharge side rollers 88A and 88B.

  Further, a switch SW4 that is turned on / off when the leading end of the roll sheet 10 abuts at a position corresponding to the center position in the width direction of the roll sheet 10 is provided on the front surface of the cutter plate 35. The switch SW4 is connected to a control circuit unit (not shown). Thereby, the leading end position of the roll sheet 10 discharged by the paper discharge rollers 84 and 84 can be detected.

Next, the configuration and driving operation of the first gear train 25 will be described with reference to FIG. 13A and 13B are diagrams showing the configuration of the first gear train 25 of the tape printer 1 according to the present embodiment. FIG. 13A is an enlarged front view showing the roll sheet 10 during rewinding operation, and FIG. 13B is a roll sheet. It is an enlarged front view which shows the time of 10 discharge | emission operations.
As shown in FIG. 13, first, the configuration of the first gear train 25 that drives the grip roller 22 and the roll sheet take-up gear 13A (see FIG. 5) includes a motor gear 91 attached to the shaft of the first drive motor 24, A first roller double gear 92 that meshes with the motor gear 91, a substantially flat delay arm 93 that is pivotally supported by the rotation shaft of the first roller double gear 92, and a predetermined peripheral edge of the delay arm 93. A pair of first and second planetary gears 94A and 94B that are pivotally supported at a central angle and mesh with the first roller double gear 92, and one of the first and second planetary gears 94A and 94B. A second roller double gear 95 that meshes, a roller gear 96 that meshes with the second roller double gear 95 and is attached to one end of the grip roller 22, and the roller A planetary gear arm 97 that is rotatably supported on the shaft center of the gear 96 by a predetermined angle, a third planetary gear 98 that is supported on one end side of the planetary gear arm 97 and meshes with the roller gear 96, and A first clutch gear 99A that meshes with the third planetary gear 98 only when rewinding the tape, and a clutch spring (this clutch spring is used when the first clutch gear 99A rotates counterclockwise). A second clutch gear 99B that is rotationally driven via a loose side and transmits a predetermined constant torque), and a roll sheet take-up gear 13A that meshes with the second clutch gear 99B. Yes.

  On the other hand, as shown in FIG. 13, the configuration of the first gear train 25 that drives the platen roller 21, the paper discharge roller unit 37, and the ribbon take-up spool (not shown) of the ribbon cassette 71 is the same as that of the first drive motor 24. A motor gear 91 attached to the shaft, a first roller double gear 92 that meshes with the motor gear 91, a roller idle gear 101 that meshes with the first roller double gear 92, and a rotational axis of the roller idle gear 101 A substantially flat planetary gear stopper 102 mounted to face the delay arm 93, a third roller double gear 103 meshed with the roller idle gear 101, and a platen roller meshed with the third roller double gear 103 A platen gear 104 attached to one end of the plate 21 and teeth on the platen gear 104 A paper discharge roller gear 81 (see FIG. 12), a paper discharge roller gear arm 105 rotatably supported on a shaft center of the paper discharge roller gear 81 by a predetermined angle, and one end side of the paper discharge roller gear arm 105 A fourth planetary gear 106 that is pivotally supported on the paper discharge roller gear 81 and meshed with the paper discharge roller gear 81; a ribbon clutch gear 107A that meshes with the fourth planetary gear 106 only during tape printing; and a clutch spring coupled to the ribbon clutch gear 107A. (This clutch spring becomes a loose side when the ribbon clutch gear 107A rotates counterclockwise and transmits a predetermined constant torque.) And the ribbon clutch gear 107B that is rotationally driven via the ribbon clutch gear 107A. Ribbon winding that meshes with the gear 107B and is attached to one end of the ribbon winding spool of the ribbon cassette 71 And a gear 108..

Next, the schematic operation of the first gear train 25 will be described with reference to FIG. First, the rewinding operation of the roll sheet 10 will be described with reference to FIG. The thermal head 27 is separated from the platen roller 21 by a predetermined distance via the second gear train 28 by driving the second drive motor 30 in advance as described above.
The roll sheet 10 is rewound by rotating the first drive motor 24 counterclockwise, the first roller double gear 92, the second planetary gear 94B, the second roller double gear 95, the roller gear 96, the third planetary gear 98, The first clutch gear 99A, the second clutch gear 99B, and the roll sheet take-up gear 13A are rotated in this order. At the same time, the first roller double gear 92, the roller idle gear 101, the third roller double gear 103, the platen gear 104, the paper discharge roller gear 81, and the fourth planetary gear 106 are rotated in this order. Further, the paper discharge roller gear arm 105 is pushed downward, and the rotational drive of the fourth planetary gear 106 is not transmitted to the ribbon clutch gears 107A and 107B and the ribbon take-up gear 108.

As a result, the roller gear 96 rotates counterclockwise, and the grip roller 22 to which the roller gear 96 is attached rotates counterclockwise at a predetermined rotational speed. Therefore, the roll sheet 10 that is pressed against the grip roller 22 through the driven rollers 23 and 23 with a predetermined pressing force is pulled toward the roll sheet unit 11 by the counterclockwise rotation of the grip roller 22 (in the direction of arrow J). .
Further, the roll sheet take-up gear 13A of the roll sheet unit 11 rotates in the clockwise direction, and the roll core 10A of the roll sheet 10 rotates in the clockwise direction through the roll sheet take-up gear 13A to rotate the grip roller 22. The roll sheet 10 drawn in by is rolled into the roll sheet unit 11. In addition, since the gear ratio is set so that the winding speed of the roll sheet 10 by the rotation of the roll sheet winding gear 13A is larger than the pulling speed of the roll sheet 10 by the grip roller 22, the grip roller 22 is set. An appropriate tension is applied to the roll sheet 10 between the roll sheet unit 11 and the roll sheet 10 can be wound up neatly.

The platen gear 104 rotates counterclockwise, and the platen roller 21 attached to the platen gear 104 rotates counterclockwise. However, since the thermal head 27 is separated, almost no pulling force acts on the roll sheet 10. Absent.
The paper discharge roller gear 81 that meshes with the platen gear 104 rotates clockwise. As described above, the paper discharge roller unit 37 is interposed between the first clutch spring 82 and the second clutch spring 83 (FIG. 12). (Reference) Since the roll sheet 10 is stopped, an appropriate tension is applied to the roll sheet 10 between the paper discharge roller unit 37 and the grip roller 22, and the roll sheet 10 can be wound up neatly.

Next, the discharge operation of the roll sheet 10 by the first gear train 25 during printing and paper discharge processing will be described with reference to FIG. The second drive motor 30 is driven in advance as described above, and the thermal head 27 is pressed against the platen roller 21 via the second gear train 28.
The roll sheet 10 is ejected by rotating the first drive motor 24 in the clockwise direction to rotate the first roller double gear 92, the first planetary gear 94A, the second roller double gear 95, the roller gear 96, and the third planetary gear 98. Rotate in order. Further, the planetary gear arm 97 is pushed upward, and the rotational drive of the third planetary gear 98 is not transmitted to the first and second clutch gears 99A and 99B and the roll sheet take-up gear 13A. At the same time, the first roller double gear 92, the roller idle gear 101, the third roller double gear 103, the platen gear 104, the discharge roller gear 81, the fourth planetary gear 106, the ribbon clutch gear 107A, the ribbon clutch gear 107B, and the ribbon winding The take gear 108 is rotated in this order.

As a result, the roller gear 96 rotates clockwise, and the grip roller 22 to which the roller gear 96 is attached rotates clockwise at a predetermined rotational speed. Therefore, the roll sheet 10 pressed against the grip roller 22 through the driven rollers 23, 23 with a predetermined pressing force is pulled out in the discharge side direction (right side in FIG. 13) by the clockwise rotation of the grip roller 22. At the same time (in the direction of arrow K), the core 11A of the roll sheet unit 11 rotates counterclockwise.
Since the platen gear 104 rotates clockwise and the platen roller 21 attached to the platen gear 104 rotates clockwise, the roll sheet 10 pressed against the platen roller 21 by the thermal head 27 via the head springs 48, 48. Is pulled out in the discharge direction (right side direction in FIG. 13) (arrow K direction). The gear ratio is set so that the pulling speed of the roll sheet 10 by the rotation of the platen roller 21 is larger than the pulling speed of the roll sheet 10 by the grip roller 22, and therefore the platen roller 21 and the grip roller 22. Appropriate tension is applied to the intermediate roll sheet 10 so that clean printing can be performed on the roll sheet 10.

Further, the paper discharge roller gear 81 meshing with the platen gear 104 rotates counterclockwise, and the paper discharge roller unit 37 is interposed via the first clutch spring 82 and the second clutch spring 83 as described above (FIG. 12). Reference) Since the sheet rotates in the counterclockwise direction, the roll sheet 10 is pulled out in the discharge direction (arrow K direction) by the cooperation of the discharge rollers 84 and 84 of the discharge roller unit 37 and the cutter plate 35. Note that the gear ratio is set so that the drawing speed of the roll sheet 10 by the rotation of the respective discharge rollers 84 and 84 of the discharge roller unit 37 is larger than the drawing speed of the roll sheet 10 by the platen roller 21. Therefore, an appropriate tension is applied to the roll sheet 10 between the platen roller 21 and each of the paper discharge rollers 84 and 84, so that clean printing can be performed on the roll sheet 10.
Further, the sheet discharge roller gear arm 106 is lifted upward by the counterclockwise rotation of the sheet discharge roller gear 81, and the ribbon take-up gear 108 rotates clockwise through the fourth planetary gear 106 and the ribbon clutch gears 107A and 107B. Then, an ink ribbon (not shown) is taken up on a ribbon take-up spool (not shown).

Next, operations of the delay arm 93 and the planetary gear stopper 102 at the start of printing and at the time of printing will be described with reference to FIG. FIG. 14 is a diagram illustrating a configuration of a portion that drives the platen roller 21 and the grip roller 22 of the first gear train 25 during printing of the tape printer 1 according to the present embodiment, and FIG. 14A is an enlarged view illustrating when printing is started. It is a partial front view, (B) is an enlarged partial front view showing a printing operation. The second drive motor 30 is driven in advance as described above, and the thermal head 27 is pressed against the platen roller 21 via the second gear train 28.
As shown in FIG. 14A, first, the substantially flat delay arm 93 has a long and narrow extension extending outward from the outer peripheral surface on the opposite side of the first planetary gear 94A with respect to the rotation axis. A protruding portion 93A is provided. Further, at a position facing the extending portion 93A of the substantially semicircular flat plate-like planetary gear stopper 102 (a position on the lower left side of the planetary gear stopper 102 in FIG. 14A), a substantially C-shape opening outward is formed. A recessed portion 102A to be formed is provided.

  Then, when printing is started, the delay arm 93 passes through the first roller double gear 92 in the clockwise direction so that the second planetary gear 94B meshes with the second roller double gear 95, as shown in FIG. Has been rotated. At the same time, the planetary gear stopper 102 is rotated counterclockwise via the roller idle gear 101. Accordingly, the extension portion 93A of the delay arm 93 and the concave portion 102A of the planetary gear stopper 102 are separated from each other. In the case where the roll sheet 10 is pulled in, the extension portion 93A of the delay arm 93 and the concave portion 102A of the planetary gear stopper 102 are similarly separated (see FIG. 13A).

  Subsequently, when printing is started, as shown in FIG. 14B, the motor gear 91 rotates clockwise to discharge the roll sheet, and the first roller double gear 92 rotates counterclockwise. Since the roller idle gear 101 rotates in the clockwise direction, the planetary gear stopper 102 rotates in the clockwise direction. At the same time, after the first roller double gear 92 rotates counterclockwise, the delay arm 93 rotates counterclockwise and the second planetary gear 94B is separated from the second roller double gear 95, and then the first roller double gear 92 is separated. The delay arm 93 rotates counterclockwise by a predetermined angle by rotating the gear 92 clockwise by a predetermined angle, and the first planetary gear 94A meshes with the second roller double gear 95. Further, the extension portion 93A enters and fits into the recess 102A of the planetary gear stopper 102 rotating in the clockwise direction by the rotation of the delay arm 93 by a predetermined angle in the clockwise direction.

As a result, when the motor gear 91 is rotating in the clockwise direction, the state in which the extension portion 93A of the delay arm 93 is fitted in the recess 102A of the planetary gear stopper 102 is maintained. Since the gear ratio is set so that the roll sheet 10 pulling speed of the platen roller 21 is larger than the roll sheet 10 pulling speed of the grip roller 22 as described above, the second roller double gear 95 is A counterclockwise rotational force is applied, so that a force for pushing the first planetary gear 94A away, that is, a force for rotating the delay arm 93 clockwise is generated. However, since the delay arm 93 is prevented from rotating clockwise by the planetary gear stopper 102 loaded with the counterclockwise rotational force, the first planetary gear 94A does not move away from the second roller double gear 95, and the motor gear The rotational driving force 91 is reliably transmitted to the second roller double gear 95.

  At the start of printing, after one second planetary gear 94B is separated from the second roller double gear 95, the first roller double gear 95 is engaged until the other first planetary gear 94A is engaged with the second roller double gear 95. The rotational drive of 92 is not transmitted to the second roller double gear 95, and the roller gear 96 does not rotate. Further, the rotation driving of the first roller double gear 92 is transmitted to the platen roller 21 via the roller idle gear 101, the third roller double gear 103, and the platen gear 104 when printing is started. Therefore, at the start of printing, after the platen roller 21 rotates for a predetermined time, the grip roller 22 rotates, so that the sag of the roll sheet 10 between the platen roller 21 and the grip roller 22 can be removed, and the platen roller 21 and the grip roller Appropriate tension can be reliably applied to the roll sheet 10 between the 22 sheets, and clean printing can be performed on the roll sheet 10.

  Next, a schematic configuration of the roll sheet unit 11 will be described with reference to FIGS. FIG. 15 is an exploded view showing a schematic configuration of the roll sheet unit 11 according to the present embodiment, wherein (A) is an exploded plan view, and (B) is an AA sectional view of (A). FIG. 16 is a perspective view seen from the unit holder 12 on the fixed support side showing a state in which the roll sheet unit 11 according to the present embodiment is assembled. FIG. 17 is a perspective view seen from the unit holder 13 on the rotation support side, showing a state in which the roll sheet unit 11 according to the present embodiment is assembled. FIG. 18 is a side view seen from the unit holder 12 on the fixed support side in a state where the roll sheet unit 11 according to the present embodiment is assembled. FIG. 19 is a side view seen from the unit holder 13 on the rotation support side in a state where the roll sheet unit 11 according to the present embodiment is assembled.

As shown in FIG. 15, the roll sheet 10 is wound so that the end surface on one side (the left end side in FIG. 15) coincides with the cylindrical core 110. The core 110 has an inner diameter dimension slightly larger than the inner diameter dimension of the core 110 by a predetermined width dimension in the axial direction on the inner peripheral surface of the edge portion on one side (left end side in FIG. 15). A portion 110A is formed, and two engaging holes 110B and 110B are formed in the axially inner edge of the fitting insertion portion 110A at positions facing the central axis.
Further, on the other end (right end side in FIG. 15) of the core 110, there are a side portion 112 extending a predetermined length radially inward at a substantially right angle, and an inner peripheral side of the side portion 112. A cylindrical portion 113 extending from the end edge portion toward the outside in the core axis direction is formed. The axially outer end surface of the cylindrical portion 113 is located on substantially the same plane as the end surface of the roll sheet 10. In addition, this roll sheet 10 is comprised by two layers of the adhesive sheet by which the surface was printable and the adhesive agent was apply | coated to the back surface, and the release paper bonded together on the back surface of this adhesive sheet, and the printing surface is inside. It is wound around the core 110 so as to be.

  Moreover, each adhesive sheet 111, 111 is stuck on each end face (in FIG. 15, both left and right end faces) of the roll sheet 10. The pressure-sensitive adhesive sheet 111 has an outer diameter substantially equal to the maximum diameter of the roll sheet 10 in a state in which the roll sheet 10 is wound, and has a through hole having a diameter substantially equal to the outer diameter of the core 110 at a substantially central portion. It is formed in a substantially annular shape that is perforated, and double-sided tape is affixed to both axial end faces.

  In addition, a slide spool 114 is in contact with the end surface of the roll sheet 10 on the cylindrical portion 113 side via an adhesive sheet 111. The slide spool 114 has an annular plate-shaped restricting means having an outer diameter substantially equal to the maximum diameter of the roll diameter in a state in which the roll sheet 10 is wound, and having an inner diameter substantially equal to the inner diameter of the core 110. The flange portion 115 and the flange portion 115 are suspended from the inner peripheral edge of the flange portion 115 at the predetermined center angle (in this embodiment, every 90 degrees) on the inner side in the sheet width direction (leftward direction in FIG. 15). The first rib portions 116, 116, 116, 116 are provided. Further, the outer peripheral surface of each first rib portion 116, 116, 116, 116 forms a circumferential surface that is substantially equal to the outer peripheral surface of the core 110. Further, the axial length of each first rib portion 116, 116, 116, 116 is formed slightly shorter than the axial length of the tube portion 113.

  A leaf spring 118 is in contact with the axially outer end surface of the slide spool 114. The leaf spring 118 has a substantially annular plate shape having an outer diameter substantially equal to the outer diameter of the flange portion 115 of the slide spool 114 and an inner diameter substantially equal to the inner diameter of the flange portion 115, and has a predetermined height winding core. It is formed in a substantially trapezoidal cross section that protrudes to the 110 side (left side in FIG. 15).

Furthermore, a unit holder 12 that supports the core 110 is attached to an end surface portion of the core 110 on the cylinder portion 113 side via an adhesive sheet 111, a slide spool 114, and a leaf spring 118. The unit holder 12 includes a substantially disc-shaped support plate 120 and a substantially cylindrical second rib portion 121 projecting inward in the width direction of the sheet from a substantially central portion of the inner end surface of the support plate 120. Yes. In addition, the respective elastic locking pieces 122, 122, 122, 122 are suspended inside the second rib portion 121 at predetermined central angles (in this embodiment, about every 90 degrees). Locking protrusions 123, 123, 123, 123 are formed at the tips of the elastic locking pieces 122, 122, 122, 122.
The outer diameter of the second rib portion 121 is formed substantially equal to the inner diameter of the slide spool 114, and the inner diameter of the second rib portion 121 is formed larger than the outer diameter of the cylindrical portion 113. The axial height dimension of the second rib portion 121 is formed substantially equal to the axial height dimension of the first rib portion 116 of the slide spool 114.
Further, the outer peripheral surface of each elastic locking piece 122, 122, 122, 122 excluding each locking projection 123 forms a circumferential surface having a diameter substantially equal to the inner diameter of the cylindrical portion 113, and each elastic locking piece The dimension from the base end portion of the pieces 122, 122, 122, 122 to the axially outer end surface of each locking projection 123, 123, 123, 123 is the axial length dimension of the inner peripheral surface of the cylindrical portion 113. It is formed almost equally.

  Further, as shown in FIGS. 16 and 18, the unit holder 12 includes a mounting member 14A that protrudes axially outward from the outer end surface of the support plate 120, and a second rib portion on the radially outer side of the mounting member 14A. 121, a substantially cylindrical third rib portion 124 concentrically with 121 and projecting lower than the mounting member 14A, and a flat plate portion 125 extending from the upper end surface portion of the mounting member 14A to the outside in the axial direction by a predetermined length. ing. The mounting member 14A includes a pair of straight portions extending in parallel from the lower surface of the flat plate portion 125 to the vicinity of the center of the support plate 120, and a circle concentric with the outer peripheral surface of the elastic locking piece 122 at the lower end of the straight portion. Since the peripheral surface is formed, the vertical cross section in the axial direction is formed in a substantially U shape, and the side surface functions as a guide surface at the time of insertion as will be described later, and the unit when the roll sheet 10 is conveyed It functions to fix the holder 12.

Further, the third rib portion 124 is radially outwardly protruded to the outer side in the axial direction up to almost the same height as the third rib portion 124, and the left and right oblique lower portions are narrowed at a predetermined angle in the lower direction. Thus, an insertion guide portion 126 is formed which is deleted up to the outer end surface of the support plate 120 and whose lower end portion is deleted horizontally to a predetermined height up to the outer end surface of the support plate 120. Each of the guide surfaces 126A and 126A formed on the left and right oblique lower sides of the insertion guide portion 126 functions as a guide surface when the roll sheet unit 11 is inserted as will be described later.
Further, a recess 127 is formed inside the vicinity of the lower end edge of the insertion guide portion 126, and a substantially plate-like protrusion 128 is formed. Depending on the type of the roll sheet 10 wound around the roll sheet unit 11, one or more through holes, notches, or the like may be formed on the protrusion 128. The type of the roll sheet 10 is discriminated by the position where the etc. are formed or the combination thereof. The through holes and the like are formed at positions facing tape discrimination switches S1 and S2, which will be described later.
In addition, the respective leg portions 129 and 129 are formed so as to protrude substantially parallel to the side surface portion of the mounting member 14A from the left and right edge portions of the projecting portion 128 to the outside of the outer peripheral surface of the support plate 120 by a predetermined dimension. In addition, positioning recesses 131 and 131 are formed on the center line in the left-right direction of the third rib portion 124 of the insertion guide portion 126 and on the radially outer side of the third rib portion 124, as described later. Positioning springs 132 and 132 (see FIG. 21) are inserted when the seat unit 11 is mounted.

As shown in FIGS. 15, 17, and 19, an adhesive sheet 111 is attached to an end surface portion of the core 110 on the fitting insertion portion 110 </ b> A side (the left end side end surface portion of the core 110 in FIG. 15B). The unit holder 13 is engaged therewith. The unit holder 13 is cylindrical and has an axially outer end surface portion (a left end surface portion in FIG. 15) closed, and a central portion of the outer end surface protruding in a substantially conical shape by a predetermined height. 14B and the outer periphery of the axially inner end surface portion (right end surface portion in FIG. 15) of the mounting member 14B, and in the state where the roll sheet 10 is wound, the outer diameter is approximately equal to the maximum diameter of the wound diameter. And a flange portion 135 having a diameter. Further, a roll sheet take-up gear 13A is formed so as to protrude from the end surface on the outer side in the axial direction of the flange portion 135 on a concentric circle on the outer side in the radial direction of the outer peripheral surface of the mounting member 14B. In addition, a pair of elastic locking pieces 136 and 136 are vertically suspended from the end surface on the inner side in the axial direction of the flange portion 135 and a pair of fourth rib portions 138 so as to sandwich the elastic locking pieces 136 and 136. 138 is suspended. In addition, locking protrusions 137 and 137 are formed at the distal ends of the elastic locking pieces 136 and 136, respectively.
The outer peripheral surfaces of the elastic locking pieces 136 and 136 and the fourth rib portions 138 and 138 form a circumferential surface having a diameter substantially equal to the inner diameter of the fitting insertion portion 110A of the winding core 110, and each elastic engagement member. The dimensions of the stoppers 136 and 136 and the fourth rib portions 138 and 138 from the proximal end portion to the distal end portion are formed substantially equal to the axial length of the inner peripheral surface of the fitting insertion portion 110A. The stop protrusions 137 and 137 are engaged and locked in the respective locking holes 110B and 110B of the core 110 as will be described later.

Next, assembly of the roll sheet unit 11 will be described with reference to FIG. In assembling the roll sheet unit 11, first, the roll sheet 10 is wound around the core 110 while aligning end surfaces of the core 110 and the roll sheet 10 on one end side (left end side in FIG. 15). And the adhesive sheet 111 is affixed on the end surface of the width direction of the roll sheet 10 wound by the core 110 at the one end side (left end side in FIG. 15). Subsequently, the locking protrusions 137 and 137 of the elastic locking pieces 136 and 136 of the unit holder 13 are fitted from one end side of the core 110 so as to face the locking holes 110B and 110B of the core 110, respectively. Inserted into the insertion portion 110A (in the direction of arrow 141), the inner end surface of the flange portion 135 is brought into contact with the outer end surface of the adhesive sheet 111, and the locking protrusions 137 and 137 are elastically received in the locking holes 110B and 110B. To be locked.
Thereby, unit holder 13 is combined with one end side (left end side in Drawing 15) of core 110 around which roll sheet 10 is wound.

Moreover, the adhesive sheet 111 is stuck on the end surface on the other end side in the width direction of the roll sheet 10 wound around the core 110 (right end side in FIG. 15). Then, from the other end side in the width direction of the roll sheet 10, the outer peripheral surface of each first rib portion 116, 116, 116, 116 of the slide spool 114 and the other end side (right end side in FIG. 15) of the roll sheet 10. The inner end face of the flange portion 115 is attached to the outer end face of the pressure-sensitive adhesive sheet 111 by sliding in the direction of the arrow 142 while sliding the inner peripheral face. Subsequently, the leaf spring 118 is brought into contact with the outer end surface of the flange portion 115.
Next, the elastic locking pieces 122, 122, 122, 122 of the unit holder 12 are inserted into the through holes formed in the central portions of the leaf spring 118 and the slide spool 114 and in the cylindrical portion 113 of the core 110 (in the direction of arrow 142). ). Then, the inner end face of the support plate 120 is pressed against the leaf spring 118, and the locking protrusions 123, 123, 123, 123 formed at the tip ends of the elastic locking pieces 122, 122, 122, 122 are wound around the cores. The inner side surface of the side part 112 of 110 is made to slide.
As a result, the slide spool 114 is coupled to the unit holder 13, the roll sheet 10, the core 110, and the adhesive sheets 111 and 111. The slide spool 114 is rotatably supported together with the core 110 by the outer peripheral surface of the second rib portion 121 of the unit holder 12 while being urged toward the roll sheet 10 by the leaf spring 118. Further, the winding core 110 slides between the inner peripheral surface of the cylindrical portion 113 and the outer peripheral surface of each elastic locking piece 122, 122, 122, 122 of the unit holder 12, and the respective locking protrusions 123, 123, 123, 123 is rotatably supported by sliding between the axially outer end surface of 123 and the inner end surface of the side portion 112. A sticker (not shown) on which the type of the roll sheet 10 is printed is attached to the upper side surface of the flat plate portion 125.

  Here, the core 110, each adhesive sheet 111, 111, the slide spool 114, each unit holder 12, 13, etc. which comprise the said roll sheet unit 11 are produced with the resin materials which can be recycled, such as polystyrene. .

Next, the configuration of the unit support portion 16B on the rotation support side of the tape printer 1 to which the unit holder 13 of the roll sheet unit 11 configured as described above is mounted will be described with reference to FIG. FIG. 20 is a partially enlarged perspective view of the unit support portion 16B on the rotation support side of the tape printer 1 according to the present embodiment.
As shown in FIG. 20, the unit support portion 16B (see FIGS. 1 and 2) includes a wall portion 145 formed in a substantially semicircular shape having a circular arc on the side surface portion in the lower direction, and the wall portion 145. A rotation support groove 146 having a predetermined depth dimension formed substantially downward from the center position of the upper edge, an abutting section 147 formed outside the outer end face of the wall section 145 by a predetermined dimension, and the wall section. The gear escape portion 148 protrudes inward from the arc peripheral edge portion of 145. Further, the diameter of the substantially semicircular arc of the wall 145 is larger than the diameter of the tip circle of the roll sheet take-up gear 13 </ b> A of the unit holder 13. In addition, a guide surface 149 that is inclined outwardly from the upper side is formed at the upper end of the contact portion 147.

Further, the rotation support groove 146 formed in the wall portion 145 is formed to have a groove width dimension substantially equal to the diameter dimension of the outer peripheral surface of the mounting member 14B of the unit holder 13, and the central portion of the lower end is slightly raised. Is formed. Therefore, when the mounting member 14B of the unit holder 13 is inserted into the rotation support groove 146 from the upper side and attached, three positions on the outer peripheral surface of the mounting member 14B in the front-rear direction and the lower side every 90 degrees of the central angle. Is in contact with the inner surface of the rotation support groove 146.
The contact portion 147 is configured such that when the mounting member 14B of the unit holder 13 is inserted into the rotation support groove 146 from the upper side and attached, the axially outer end surface portion of the mounting member 14B contacts.
Further, the gear escape portion 148 forms a predetermined gap with the tip circle of the roll sheet take-up gear 13A of the unit holder 13 when the mounting member 14B of the unit holder 13 is inserted into the rotation support groove 146 from the upper side and attached. It is formed to do. Further, the width dimension in the axial direction of the gear escape portion 148 is such that when the mounting member 14B of the unit holder 13 is inserted into the rotation support groove 146 from the upper side and attached, the outer clearance of the flange portion 135 of the unit holder 13 and a predetermined clearance. It is formed to constitute.
The second clutch gear 99B protrudes from an obliquely lower side surface portion (the lower left side surface portion in FIG. 20) of the gear escape portion 148 on the pulling direction side of the roll sheet 10, and is rotatably provided. . When the mounting member 14B of the unit holder 13 is inserted and attached to the rotation support groove 146, the second clutch gear 99B and the roll sheet take-up gear 13A of the unit holder 13 are engaged with each other. ing.

Next, the configuration of the unit support portion 16A on the fixed support side of the tape printer 1 to which the unit holder 12 of the roll sheet unit 11 configured as described above is mounted will be described with reference to FIG. FIG. 21 is a partially enlarged perspective view of the unit support portion 16A on the fixed support side of the tape printer 1 according to the present embodiment.
As shown in FIG. 21, the unit support portion 16 </ b> A (see FIGS. 1 and 2) is a U-shaped groove having a substantially U-shaped cross section formed in a downward direction from a substantially central position of the upper end edge of the side surface portion 151. 152, a pair of through-holes 153 and 153 drilled on both the left and right sides of the U-shaped groove 152, and a leaf spring having a generally U-shaped cross section that is attached to protrude from the back side of the through-holes 153 and 153. And a pair of positioning springs 132 and 132, and inclined portions 154 and 154 formed to be inclined at a predetermined angle on the upper side in the front-rear direction (the sheet conveying direction in FIG. 21). In addition, a pair of engaging recesses 155 and 155 that receive the feet 129 and 129 of the unit holder 12 are formed at the lower ends of the inclined portions 154 and 154.

Further, between the pair of engaging recesses 155 and 155, tape discrimination sensors S1 and S2 configured by push-type microswitches or the like are provided. In the present embodiment, the two tape discrimination sensors S1 and S2 are provided, but the number is not limited to two, and two or more may be provided. Each of the tape discrimination sensors S1 and S2 is a known mechanical switch composed of a plunger, a micro switch, and the like, and the protruding portion 128 of the unit holder 12 is in contact with the tape discrimination sensors S1 and S2. Whether the roll sheet unit 11 is mounted or not, and the type of the roll sheet 10 wound around the roll sheet unit 11 is detected by an on / off signal output based on the detection. To do.
In the case of the present embodiment, the plungers of the tape discrimination sensors S1 and S2 always protrude, and the microswitch is in the OFF state. When the roll sheet unit 11 is not attached, or when the through hole or the like is formed at a position facing the tape discrimination sensors S1 and S2 of the protruding portion 128, the plunger is not pressed down and the microswitch Is in the off state, an off signal is output. On the other hand, when the lower surface of the projecting portion 128 is in contact with each tape discrimination sensor S1, S2, the plunger is depressed and the micro switch is turned on. Therefore, an ON signal is output.
In the case of the present embodiment, when an off signal is output from both tape discrimination sensors S1 and S2, it is determined that the roll sheet unit 11 is not attached, and an on signal is output from either tape discrimination sensor S1 or S2. Is output, or when the ON signal is output from both the tape determination sensors S1 and S2, three types of roll sheets 10 are determined corresponding to the signals. Therefore, as the number of tape discrimination sensors increases, the types of roll sheet 10 that can be discriminated increase.

  Accordingly, when the unit support portion 16A of the unit holder 12 is mounted, first, the circumferential surface of the tip end portion of the mounting member 14A is brought into contact with the upper end portion of the U-shaped groove 152 and the insertion guide portion 126 of the unit holder 12 is inclined. The lower guide surface 126A is brought into contact with the inclined portion 154. Then, the mounting member 14A is inserted in the lower direction while pressing against the insertion guide grooves 126 and the inclined portions 154 of the unit support portion 16A, and the feet 129 and 129 of the unit holder 12 are paired with a pair of engagement recesses 155, By fitting in 155, the unit holder 12 is detachably attached. Further, the unit holder 12 is prevented from rotating by the contact between the side surface portion of the mounting member 14A and the inner surface of the U-shaped groove 152 and the engagement between the foot portions 129 and 129 and the engagement recesses 155 and 155. Mounted. Thereby, the unit holder 13, the winding core 110, the slide spool 114, and the leaf spring 118 are rotatably supported.

As described in detail above, in the roll sheet unit 11 of the tape printer 1 according to the present embodiment, first, the pressure-sensitive adhesive sheet 111 is attached to the end surface on one end side in the width direction of the roll sheet 10 wound around the core 110. To do. Subsequently, the unit holder 13 is inserted from one end side of the core 110 to bring the inner end face of the flange portion 135 into contact with the outer end face of the adhesive sheet 111, and the respective locking projections 137 and 137 are respectively connected to the respective locking holes 110B. , 110B is elastically locked. Next, the pressure-sensitive adhesive sheet 111 is attached to the end face on the other end side of the roll sheet 10. And it inserts, sliding the outer peripheral surface of each 1st rib part 116,116,116,116 of the slide spool 114 from the other end side of the width direction of this roll sheet 10, and the inner side end surface of the flange part 115 is used as an adhesive sheet. Adhere to the outer end face of 111. Subsequently, the leaf spring 118 is brought into contact with the outer end surface of the flange portion 115. Next, the elastic locking pieces 122, 122, 122, 122 of the unit holder 12 are inserted into the through holes formed in the central portions of the leaf spring 118 and the slide spool 114 and in the cylindrical portion 113 of the core 110 (in the direction of arrow 142). ). Then, the inner end face of the support plate 120 is pressed against the leaf spring 118, and the locking protrusions 123, 123, 123, 123 formed at the tip ends of the elastic locking pieces 122, 122, 122, 122 are wound around the cores. The inner side surface of the side part 112 of 110 is made to slide. As a result, the slide spool 114 is coupled to the roll sheet 10, the core 110, the unit holders 12 and 13, the leaf spring 118, and the adhesive sheets 111 and 111.
The slide spool 114 is rotatably supported together with the core 110 by the outer peripheral surface of the second rib portion 121 of the unit holder 12 while being urged toward the roll sheet 10 by the leaf spring 118. Further, the winding core 110 is slid between the axially outer end surface of the cylindrical portion 113 and the inner end surface of the support plate 120 of the unit holder 12, the inner peripheral surface of the cylindrical portion 113 and each elastic locking piece 122 of the unit holder 12, 122, 122, 122 is supported rotatably by sliding with the outer peripheral surface and sliding between the axially outer end surface of each locking projection 123, 123, 123, 123 and the inner end surface of the side portion 112.
Further, the mounting members 14A and 14B protruding from the unit holders 12 and 13 of the roll sheet unit 11 are fitted into the unit support portions 16A and 16B of the tape printer 1 while the unit holder 12 The roll sheet unit 11 can be attached to and detached from the tape printer 1 by fitting the foot portions 129 and 129 protruding from the lower end surface into the engaging recesses 155 and 155 formed on the bottom surface of the unit support portion 16A. Attach to. Thereby, the core 110 around which the roll sheet 10 is wound is rotatably supported by the unit holders 12 and 13, and the roll sheet 10 wound around the core 110 is provided with the first drive motor 24. The first gear train 25, the platen roller 21, the grip roller 22, and the roll sheet take-up gear 13A are supported in the frame 7 so as to be transportable in the forward and reverse directions.

  Therefore, even if the humidity of the use environment is reduced and the dimension of the roll sheet 10 in the tape width direction is shortened, the slide spool 114 attached to the side end surface of the roll sheet 10 moves in the axial direction to move the roll sheet 10 side. Since the end face can be supported, the roll sheet 10 wound around the roll sheet unit 11 can be prevented from being scattered even when the humidity is low.

  Further, the slide spool 114 slides on the outer peripheral surface of the second rib portion 121 of the unit holder 12 that rotatably supports the core 110, and supports the side end surface of the roll sheet 10 while rotating together with the core 110. Therefore, even if the humidity of the usage environment of the roll sheet unit 11 is lowered, the roll sheet 10 can be reliably prevented from being scattered.

Further, the slide spool 114 supports the end surface on one end side of the roll sheet 10 and supports the inner peripheral surface on one end side in cooperation with the winding core 110 by the first rib portions 116, 116, 116, 116. While firmly supporting the one end side of the roll sheet 10, it can follow the dimensional change of the roll sheet 10 in the tape width direction by the fall of the humidity of a use environment, and can prevent the roll sheet 10 from falling apart more reliably.

  Further, when the winding core 110 rotates, the end surface portion on the outer side in the axial direction of the slide spool 114 can be regulated by the support plate 120 formed on the outer periphery of the outer end surface portion of the unit holder 12. When the winding core 110 rotates, the outer peripheral surface of the substantially cylindrical second rib portion 121 inserted into a through hole formed in the center portion of the slide spool 114 and each first rib of the slide spool 114. Since the portions 116, 116, 116, 116 slide with the inner peripheral surface, the slide spool 114 can be more firmly supported by rotation.

  In addition, the slide spool 114 is securely attached to the end surface on one end side of the roll sheet 10 via the adhesive sheet 111, and can be reliably supported on the one end side end surface of the drawn roll sheet 10 via the adhesive sheet 111. Further, since the mounting configuration of the slide spool 114 to the one end face of the roll sheet 10 can be simplified, the configuration of the roll sheet unit 11 can be simplified and the size of the roll sheet unit 11 in the tape width direction can be further reduced. be able to.

  Further, since the outer diameter of the pressure-sensitive adhesive sheet 111 is substantially equal to the maximum outer diameter of the roll sheet 10 wound around the winding core 110, the slide spool 114 has a maximum of the end surface on one end side of the roll sheet 10 via the pressure-sensitive adhesive sheet 111. It can be reliably supported up to the outer periphery. Further, even when the unused roll sheet unit 11 is mounted and the humidity of the usage environment is low, the roll sheet 10 can be reliably prevented from being scattered.

  Further, since the slide spool 114 is forcibly pressed against the end surface of the roll sheet 10 wound around the core 110 via the leaf spring 118, it is possible to support the one end side of the roll sheet 10 more firmly and use environment. Therefore, it is possible to reliably follow the dimensional change in the tape width direction of the roll sheet 10 due to the decrease in humidity of the roll sheet 10 and to further prevent the roll sheet 10 from being scattered.

  Further, since the leaf spring 118 is a substantially annular leaf spring, the configuration of the roll sheet unit 11 can be simplified and the size of the roll sheet unit 11 in the tape width direction can be further reduced.

Further, since the slide spool 114, the unit holders 12, 13, the core 110, the adhesive sheets 111, and the like are made of a resin material that can be recycled, such as polystyrene, the roll sheet unit 11 is recycled. be able to.
Further, since the roll sheet unit 11 that can reliably prevent the roll sheet 10 from being scattered in the tape printer 1 is detachably supported, the tape printer 1 includes the first drive motor 24, the first The roll sheet 10 can be repeatedly pulled in exactly a certain length through the gear train 25, the platen roller 21, the grip roller 22, and the roll sheet take-up gear 13A.

Note that the present invention is not limited to the above-described embodiment, and various improvements and modifications can be made without departing from the scope of the present invention.
For example, the slide spool 114 and the leaf spring 118 constituting the roll sheet unit 11 of the embodiment may be replaced with the slide spool 165 shown in FIG. 22A and 22B are views showing a slide spool constituting a roll sheet unit according to another embodiment, in which FIG. 22A is a front view and FIG. 22B is a left side view.
As shown in FIG. 22, the slide spool 165 has substantially the same shape as the slide spool 114, and has an outer diameter that is substantially equal to the maximum diameter of the roll sheet 10 when the roll sheet 10 is wound. A flange 115 serving as an annular plate-shaped restricting means having an inner diameter substantially equal to the inner diameter of 110, and a predetermined center from the inner peripheral edge of the flange 115 to the inner side in the sheet width direction (left side in FIG. 15) The first rib portions 116, 116, 116, 116 are provided so as to be suspended at every angle (about 90 degrees). Further, the outer peripheral surface of each first rib portion 116, 116, 116, 116 forms a circumferential surface that is substantially equal to the outer peripheral surface of the core 110. Further, the axial length of each first rib portion 116, 116, 116, 116 is formed slightly shorter than the axial length of the tube portion 113.

  Further, on the axially outer end face of the flange portion 115 of the slide spool 165, strip-shaped biasing pieces 166, 166, 166 perpendicular to the radial direction of the flange portion 115 at every predetermined center angle (every about 90 degrees), 166 is formed by being cut and raised outward by a predetermined angle (about 15 degrees). The slide spool 165 is made of a recyclable resin material such as polystyrene.

Next, assembly of the roll sheet unit using this slide spool 165 will be described. First, similarly to the above-described embodiment (see FIG. 15), the unit holder 13 is coupled to one end side (left end side in FIG. 15) of the core 110 around which the roll sheet 10 is wound, and then the width of the roll sheet 10. Adhesive sheet 111 is stuck to the end face on the other end side in the direction (right end side in FIG. 15). And from the other end side in the width direction of the roll sheet 10, the outer peripheral surface of each first rib portion 116, 116, 116, 116 of the slide spool 165 and the other end side (right end side in FIG. 15) of the roll sheet 10. The inner end face of the flange portion 115 is attached to the outer end face of the pressure-sensitive adhesive sheet 111 by sliding in the direction of the arrow 142 while sliding the inner peripheral face.
Next, each elastic locking piece 122, 122, 122, 122 of the unit holder 12 is inserted into the through hole formed in the center portion of the slide spool 165 and the cylindrical portion 113 of the winding core 110 (in the direction of arrow 142). Then, the inner end surface of the support plate 120 is pressed against the outer end surface of the flange portion 115 of the slide spool 165, and the locking protrusions 123, 123 formed at the distal ends of the elastic locking pieces 122, 122, 122, 122. , 123, 123 are slid onto the inner surface of the side portion 112 of the core 110.
Thereby, the slide spool 165 is coupled to the unit holder 13, the roll sheet 10, the core 110, and the adhesive sheets 111 and 111. The slide spool 165 is urged toward the roll sheet 10 by the urging pieces 166, 166, 166, 166 formed on the outer end surface of the flange portion 115, while the second rib portion 121 of the unit holder 12 is urged. The outer peripheral surface is rotatably supported together with the core 110. Further, the winding core 110 slides between the inner peripheral surface of the cylindrical portion 113 and the outer peripheral surface of each elastic locking piece 122, 122, 122, 122 of the unit holder 12, and the respective locking protrusions 123, 123, 123, 123 is rotatably supported by sliding between the axially outer end surface of 123 and the inner end surface of the side portion 112.

Therefore, even if the humidity of the use environment is lowered and the dimension of the roll sheet 10 in the tape width direction is shortened, the slide spool 165 attached to the side end surface of the roll sheet 10 moves in the axial direction and moves to the side of the roll sheet 10. Since the end face can be supported, the roll sheet 10 wound around the roll sheet unit can be prevented from being scattered even when the humidity is low.
The slide spool 165 slides on the outer peripheral surface of the second rib portion 121 of the unit holder 12 that rotatably supports the core 110 and supports the side end surface of the roll sheet 10 while rotating together with the core 110. Therefore, even if the humidity of the usage environment of the roll sheet unit is lowered, the roll sheet 10 can be reliably prevented from being scattered.
Further, the slide spool 165 supports the end surface on one end side of the roll sheet 10 and supports the inner peripheral surface on the one end side in cooperation with the winding core 110 by the first rib portions 116, 116, 116, 116. While firmly supporting the one end side of the roll sheet 10, it can follow the dimensional change of the roll sheet 10 in the tape width direction by the fall of the humidity of a use environment, and can prevent the roll sheet 10 from falling apart more reliably.

Further, when the winding core 110 rotates, the end surface portion on the outer side in the axial direction of the slide spool 165 can be regulated by the support plate 120 formed on the outer periphery of the outer end surface portion of the unit holder 12. When the winding core 110 rotates, the outer peripheral surface of the substantially cylindrical second rib portion 121 inserted into the through hole formed in the center portion of the slide spool 165 and each first rib of the slide spool 165. Since the portions 116, 116, 116, 116 slide with the inner peripheral surface, the slide spool 165 can be supported more firmly.
Further, the slide spool 165 can be securely attached to the end surface on one end side of the roll sheet 10 via the adhesive sheet 111, and can be reliably supported on the one end side end surface of the drawn roll sheet 10 via the adhesive sheet 111. In addition, since the mounting configuration of the slide spool 165 to the one end face of the roll sheet 10 can be simplified, the configuration of the roll sheet unit can be simplified and the size of the roll sheet unit in the tape width direction can be further reduced. it can.

Further, since the outer diameter of the pressure-sensitive adhesive sheet 111 is substantially equal to the maximum outer diameter of the roll sheet 10 wound around the core 110, the slide spool 165 has a maximum of the end surface on one end side of the roll sheet 10 via the pressure-sensitive adhesive sheet 111. It can be reliably supported up to the outer periphery. In addition, even when an unused roll sheet unit is mounted and the humidity of the usage environment becomes low, the roll sheet 10 can be reliably prevented from being scattered.
Further, since the slide spool 165 is forcibly pressed against the end surface of the roll sheet 10 wound around the winding core 110 via the respective biasing pieces 166, 166, 166, 166, one end of the roll sheet 10 is further firmly formed. The side of the roll sheet 10 can be supported, and the dimensional change in the tape width direction of the roll sheet 10 due to a decrease in humidity in the usage environment can be reliably followed, and the roll sheet 10 can be further prevented from being scattered.
Further, since the leaf spring 118 of the above embodiment can be eliminated, the number of components can be reduced, and the size of the roll sheet unit in the tape width direction can be further reduced.
Further, since the slide spool 165, the unit holders 12 and 13, the core 110, the adhesive sheets 111 and the like are made of a recyclable resin material such as polystyrene, the roll sheet unit should be recycled. Can do.
Further, since the roll sheet unit capable of reliably preventing the roll sheet 10 from being scattered in the tape printer 1 is detachably supported, the tape printer 1 includes the first drive motor 24, the first gear, and the like. The roll sheet 10 can be repeatedly drawn in a certain length accurately through the row 25, the platen roller 21, the grip roller 22, and the roll sheet take-up gear 13A.

It is a perspective view which shows schematic structure of the main body housing | casing of the tape printer which concerns on this embodiment. It is a top view which shows schematic structure of the main body housing | casing of the tape printer which concerns on this embodiment. The internal structure of the tape printer concerning this embodiment is shown, (A) is a perspective view from the 2nd gear train side, and (B) is a side view on the 2nd gear train side. The internal structure of the tape printer concerning this embodiment is shown, (A) is a perspective view from the 1st gear row side, and (B) is a side view on the 1st gear row side. The internal structure at the time of removing the upper frame of the tape printer concerning this embodiment is shown, (A) is a perspective view from the 1st gear row side, and (B) is a side view on the 1st gear row side. It is a perspective view from the 2nd gear row which shows the case where the upper frame of the tape printer concerning this embodiment is removed and a ribbon cassette is mounted. It is a front view which shows the state by which the thermal head which comprises the image formation mechanism part of the tape printer which concerns on this embodiment was released from the platen roller. It is an enlarged front view which shows the structure of the 2nd gear train of the tape printer which concerns on this embodiment. 2A and 2B are diagrams illustrating a cutting mechanism unit with the paper discharge roller unit of the tape printing apparatus according to the present embodiment removed, where FIG. 2A is a plan view, FIG. 1B is a cross-sectional view along line BB in FIG. It is C arrow line view in A). It is front sectional drawing which shows the carriage mechanism of the cutting mechanism part of the tape printer which concerns on this embodiment. FIG. 7 is a diagram illustrating driving by the second gear train of the cutting mechanism of the tape printing apparatus according to the present embodiment, (A) is a partially enlarged front view illustrating driving when cutting a roll sheet, and (B) is a home position. It is a partially expanded front view which shows the drive at the time of a movement. 2A and 2B show a paper discharge roller unit of the tape printing apparatus according to the present embodiment, in which FIG. 1A is a front view, and FIG. It is a figure which shows the structure of the 1st gear train of the tape printer which concerns on this embodiment, (A) is an enlarged front view which shows the time of roll sheet rewinding operation, (B) shows the time of roll sheet discharge operation. It is an enlarged front view. FIG. 5 is a diagram illustrating a configuration of a portion that drives a platen roller and a grip roller of a first gear train during printing of the tape printer according to the present embodiment, and FIG. ) Is an enlarged partial front view showing a printing operation. It is an exploded view which shows schematic structure of the roll sheet unit which concerns on this embodiment, (A) is an exploded plan view, (B) is AA sectional drawing of (A). It is the perspective view seen from the unit holder of the fixed support side which shows the state by which the roll sheet unit which concerns on this embodiment was assembled. It is the perspective view seen from the unit holder by the side of rotation support which shows the state where the roll sheet unit concerning this embodiment was assembled. It is the side view seen from the unit holder by the side of the fixed support in the state where the roll sheet unit concerning this embodiment was assembled. It is the side view seen from the unit holder by the side of rotation support in the state where the roll sheet unit concerning this embodiment was assembled. It is a partial expansion perspective view of the unit support part by the side of rotation support of the tape printer concerning this embodiment. It is a partial expansion perspective view of the unit support part by the side of a fixed support of the tape printer concerning this embodiment. It is a figure which shows the slide spool which comprises the roll sheet unit which concerns on other embodiment, (A) is a front view, (B) is a left view.

DESCRIPTION OF SYMBOLS 1 Tape printer 2 Main body case 3 Upper frame 5, 6 Side wall 7 Lower frame 10 Roll sheet 11 Roll unit 12, 13 Unit holder 13A Roll sheet take-up gear 14A, 14B Mounting member 15 Conveyance mechanism part 16A, 16B Unit support part DESCRIPTION OF SYMBOLS 21 Platen roller 22 Grip roller 25 1st gear row 27 Thermal head 110 Winding core 111 Adhesive sheet 112 Side part 113 Cylinder part 114,165 Slide spool 118 Plate spring 125 Flat plate part 126 Insertion guide part 129 Foot part 131 Positioning recessed part 132 Positioning spring 146 Rotating support groove 152 Support groove 154 Inclined portion 155 Engaging recess 166 Energizing piece

Claims (3)

A sensor comprising a conveying means for conveying a long roll sheet, a printing means for printing on the roll sheet, a plunger type switch for specifying the type of the roll sheet, and the sensor are arranged. In a roll cassette that is used in a tape printer provided with a flat portion, and the roll sheet is wound and supported in a removable state in the tape printer,
The roll cassette has a cylindrical core around which the roll sheet is wound,
A first unit holder having a support shaft that is inserted into one end side of the core and is rotatably supported inside the core;
The first unit holder includes a flange portion formed on the outer periphery of the outer end surface portion of the support shaft;
A mounting member projecting vertically in the vertical direction at a substantially central portion of the outer end surface portion of the flange portion;
A plate-like projecting portion that is formed to project from the flange portion below the mounting member, and the flat portion corresponds to the lower surface ,
In the plate-like projecting portion , having a detected portion consisting of a through hole or a notch formed at a position facing the sensor ,
The mounting member is inserted into a groove provided in the tape printer from above, so that the first unit holder is positioned so as not to rotate in the tape printer and is detachably supported. roll cassette lower surface and the flat portion and is facing, characterized in that the type of the roll sheet is identified by the presence or absence of contact between the sensor and the projecting portion of the.   The roll cassette according to claim 1, further comprising a second unit holder that is engaged with the other end side of the winding core and abuts against one end face of the roll sheet. A conveying means for conveying a roll sheet wound around a cylindrical core, a printing means for printing on the roll sheet, and a roll cassette around which the roll sheet is wound are supported in a removable state. A tape printing apparatus comprising: a support mechanism that:
The roll cassette is the roll cassette according to claim 1 or claim 2,
Corresponding to the lower surface of the projecting part in the roll cassette, comprising a flat part on which a sensor comprising a plunger type switch in which the type of the roll sheet is specified by the presence or absence of contact with the projecting part ,
The tape printing apparatus, wherein the support mechanism has a groove portion into which the mounting member of the roll cassette is inserted from above.

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