JP5862331B2 - Medium feeding apparatus and printing apparatus provided with the same - Google Patents

Description

  The present invention relates to a medium feeding device that sandwiches and feeds a medium to be fed by a pair of discharge rollers, and a printing apparatus including the same.

  2. Description of the Related Art Conventionally, a tape printing apparatus (medium feeding apparatus) is known in which a printing tape is sandwiched and rotated by a pair of discharge rollers (a first roller and a second roller) (see Patent Document 1).

JP 2008-001065 A

  In such a medium feeding device, when a part of the medium to be set is located between the first roller and the second roller that rotates and feeds the medium to be fed, the medium to be fed is A state in which the second roller can be separated from the first roller and the second roller is separated from the first roller in order to surely enter between the first roller and the second roller. It is conceivable that the medium to be fed is set, and after the setting, the second roller is brought close to the first roller, and the medium to be fed is sandwiched and rotated.

  In addition, the first rotating body pivotally attached to the first roller shaft of the first roller is engaged with the first rotating body in an overlapping state, and the medium to be fed is sandwiched between the first rotating body and the first rotating body. A second rotating body that engages and disengages, a second rotating body that rotatably supports the second roller shaft of the second roller, and a forward position where the second rotating body engages the first rotating body; It is conceivable to include a rotating body support member configured to be movable with respect to the second roller between a retreated position where the two rotating bodies are disengaged from the first rotating body. In this case, for example, by detecting that the second rotating body has moved to the retracted position, it can be detected that there is a medium to be fed between the first roller and the second roller.

  However, in such a configuration, as described above, when a part of the set medium to be set comes between the first roller and the second roller that sandwich and rotate the medium to be fed, Even if the two rollers are moved to the separated position, if the second rotating body is located at the forward movement position, the gap between the first rotating body and the second rotating body is narrowed. When the second rotating body sets the medium to be fed, there is a possibility that the medium to be fed is set in a state where it does not enter between the first rotating body and the second rotating body.

  In the present invention, even when a part of the medium to be set is located between the first roller and the second roller that rotates and feeds the medium to be fed, the medium to be fed is defined as the first roller. It is an object of the present invention to provide a medium feeding device that can be set so as to enter between the second roller and a printing device including the medium feeding device.

  The medium feeding device of the present invention has a first roller and a second roller, and sandwiches the medium to be fed and feeds the rotation of the medium to the first roller. A separation / contact mechanism for separating the contacted medium between a nip position where the medium to be fed can be sandwiched and a separation position separated from the first roller, a first rotating body pivotally attached to the first roller shaft of the first roller, A second rotation that engages with the first rotating body in an overlapped state and is movable with respect to the second roller and is disengaged by a medium to be fed sandwiched between the first rotating body and the second rotating body. A body, a second rotating body that is rotatably supported around the second roller axis of the second roller, a forward position where the second rotating body engages with the first rotating body, and a second rotating body that rotates first. The second roller between the retracted position to disengage from the body In association with the movement of the rotator support member configured to be movable relative to the second roller from the nip position to the separation position, the rotator support member is moved from the advance position to the retreat position with respect to the second roller. And an interlocking mechanism for moving the rotating body support member from the retracted position to the advanced position with respect to the second roller in conjunction with the movement of the second roller from the separation position to the nip position. .

According to this configuration, when the second roller moves to the nip position, the rotating body support member moves to the advance position with respect to the second roller in conjunction with the second roller, and the second rotating body supported thereby moves the second roller to the first position. Engage with one rotating body in an overlapping state. When the medium to be fed is inserted between the first roller and the second roller, the second rotating body is supported so as to be rotatable around the second roller axis, so that the second rotating body rotates and the medium to be fed is rotated. The first rotating body and the second rotating body do not obstruct the passage of the medium to be received. The second rotating body is disengaged from the first rotating body when the medium to be fed is sandwiched between the second rotating body and the first rotating body. Here, since the second rotating body is disengaged from the first rotating body and the overlap state with the first rotating body is eliminated, the rotating body support member that supports the second rotating body is a medium to be fed. In addition to the thickness of, move from the forward position to the reverse position by the amount of overlap cancellation.
On the other hand, when the second roller moves to the separation position, the rotating body support member moves to the retracted position with respect to the second roller, so that the second rotating body supported by the rotating body support member It does not protrude toward the first rotating body with respect to the second roller. Accordingly, when the medium to be fed is set such that a part of the medium to be fed is interposed between the first roller and the second roller that are rotated and sandwiched by the medium to be fed, the second roller is moved from the first roller. Since the second rotating body can be moved away from the first rotating body and the second rotating body can be separated from the first rotating body, the gap between the first roller and the second roller and the gap between the first rotating body and the second rotating body can be reduced. It is widened and can be set to ensure that the fed medium enters these gaps.

  In this case, the interlocking mechanism engages with the biasing means that biases the rotating body support member toward the forward movement position in conjunction with the movement of the second roller from the nip position to the separation position, and the second roller By having an interlocking engagement portion and an interlocking engagement receiving portion that are engaged and disengaged in conjunction with the movement from the separation position to the nip position, and the interlocking engagement portion and the interlocking engagement receiving portion are engaged, The rotor support member is moved from the forward position to the reverse position against the biasing means, and the interlocking engagement portion and the interlocking engagement receiving portion are disengaged from each other. It is preferable to allow movement to an advanced position.

  According to this configuration, when the second roller moves to the nip position, the interlocking engagement portion and the interlocking engagement receiving portion are disengaged from each other, so that the rotating member support member is biased by the biasing means. Moves to the forward position. On the other hand, when the second roller moves to the separated position, the interlocking engagement portion and the interlocking engagement receiving portion engage to move the rotating body support member to the retracted position against the biasing means. be able to.

  In this case, the interlocking mechanism is engaged with the shaft portion having the interlocking engagement portion formed on the outer peripheral surface and the rotating body support member, in conjunction with the engagement / disengagement of the interlocking engagement portion and the interlocking engagement receiving portion, And a support member engaging portion that reciprocally rotates around the shaft so as to move the rotary body support member between the forward position and the reverse position. In conjunction with the movement of the two rollers from the nip position to the separation position, the interlocking engagement portion moves to the engagement position where the interlocking engagement receiving portion engages, and the second roller moves from the separation position to the nip position. In conjunction with this, it is preferable that the interlocking engagement portion moves to the disengagement position where the engagement is disengaged from the interlocking engagement receiving portion.

According to this configuration, when the second roller moves to the nip position, the rotating member moves to the disengagement position, and the interlocking engagement portion is disengaged from the interlocking engagement receiving portion. The part can be rotated to move the rotating body support member to the advanced position. In contrast, when the second roller moves to the separation position, the rotation member moves to the engagement position and the interlocking engagement portion engages with the interlocking engagement portion, so that the support member engagement portion rotates. The rotor support member can be moved to the retracted position by moving.

  In this case, the rotating member further includes a detected portion that reciprocally rotates around the shaft portion in conjunction with the movement between the forward position and the backward position of the rotating body support member, and one rotation of the detected portion. It is preferable to further include detection means that faces the moving end position.

According to this configuration, when the medium to be fed is sandwiched between the first roller and the second roller while the second roller is moved to the nip position, the rotating body support member is moved to the retracted position. Further, the detected portion of the rotating member is rotated to one rotating end position in conjunction with the movement of the rotating body support member to the retracted position, and the detecting means has the detected portion at one rotating end position. By detecting this, it is detected that the rotating body support member has moved to the retracted position. For this reason, the presence or absence of the medium to be fed between the first roller and the second roller can be detected.
It should be noted that the detected part of the rotating member rotates to the other rotating end position in conjunction with the movement of the rotating body support member to the retracted position, and the detecting means has no detected part at one rotating end position. By detecting this, it may be detected that the rotor support member has moved to the retracted position.

  In these cases, the image forming apparatus further includes a medium setting unit on which a medium to be rotated that is to be rotated by the feed roller is set, and an opening / closing member that opens and closes the medium setting unit, and the separation / contact mechanism is interlocked with the opening of the opening / closing member. Thus, it is preferable that the second roller is moved from the nip position to the separated position, and the second roller is moved from the separated position to the nip position in conjunction with the closing of the opening / closing member.

  According to this configuration, when the medium to be fed is set, by opening the opening / closing member, the second roller can be moved to the separation position in conjunction with the opening / closing member. By closing the member, the second roller can be moved to the nip position in conjunction therewith.

  According to another aspect of the present invention, there is provided a printing apparatus including the above-described medium feeding device and a printing unit that performs printing on a medium to be rotated and fed by the medium feeding device.

  According to this configuration, when the medium to be fed is set so that a part of the medium to be printed printed by the printing unit is between the first roller and the second roller, the medium to be fed is easily set. be able to.

It is an external appearance perspective view of the tape printer of a closed state concerning this embodiment. It is an external appearance perspective view of the tape printer of an open state. It is the perspective view which showed the tape cutting mechanism. It is a control block diagram of a tape printer. It is the top view which showed the tape feed power system. (A) is the perspective view which looked at the tape discharge mechanism from the tape feed direction upstream side, (b) is the perspective view which looked at the tape discharge mechanism from the tape feed direction downstream side. It is a disassembled perspective view around the drive roller part in a tape discharge mechanism. It is a disassembled perspective view around the driven roller part in a tape discharge mechanism. It is a disassembled perspective view around the movable holder in the driven roller portion. It is a top view which shows a series of movement around a driven side rotary body at the time of opening and closing of an opening-and-closing lid and printing tape feeding operation, (a) is a top view at the time of opening and closing of an opening-and-closing lid, (b) is an opening and closing lid FIG. 8C is a plan view of the state where the printing side tape is not present between the driving side rotating body and the driven side rotating body, and FIG. It is a top view in the state where a printing tape was inserted between. It is a top view which shows a series of movement around a discharge drive roller and a discharge driven roller at the time of opening and closing of the opening / closing lid and at the time of feeding operation of the printing tape, (a) is a plan view when the opening / closing lid is opened, (b) Fig. 5 is a plan view of the state where the opening / closing lid is closed and there is no printing tape between the driving side rotating body and the driven side rotating body; It is a top view in the state where a printing tape was inserted between rotating bodies. It is a front view which shows a series of movement around a discharge drive roller and a discharge driven roller at the time of opening / closing of an open / close lid and a feeding operation of a printing tape, (a) is a front view when an open / close lid is opened, (b) Fig. 5 is a front view of the state where the opening / closing lid is closed and there is no printing tape between the driving side rotating body and the driven side rotating body; It is a front view of the state where the printing tape was pinched | interposed between the rotary bodies. FIG. 7 is a front view showing a series of movements around the discharge driving roller, the discharge driven roller and the hook member when the opening / closing lid is opened and closed and when the printing tape is fed, (a) is a front view when the opening / closing lid is opened; (B) is a front view of the state where the opening / closing lid is closed and there is no printing tape between the driving side rotating body and the driven side rotating body, and (c) is the driving side rotating body when the opening / closing lid is closed. FIG. 2 is a front view of a state in which a printing tape is sandwiched between the rotating body and the driven side rotating body. It is a figure which shows the drive side rotary body and driven side rotary body which concern on other embodiment, Comprising: (a) is a top view of the state with which the drive side rotary body and the driven side rotary body engaged, (b) is a drive The front view of the state which the side rotary body and the driven side rotary body engaged, (c) is a top view of the state which the drive side rotary body and the driven side rotary body disengaged, (d) is the drive side rotary body It is a front view in the state where engagement and a driven side rotator disengaged.

  Hereinafter, a medium feeding apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings. In the present embodiment, a tape printer is exemplified as the medium feeding device. This tape printing apparatus performs printing on a printing tape to be printed while feeding it, then cuts the printed portion of the printing tape while half-cutting the printing tape, and this tape piece (label) Is discharged outside the apparatus. In this embodiment, “front”, “rear”, “left”, “right”, “upper”, and “lower” follow the direction (front view) viewed from the user who uses the tape printer.

  As shown in FIGS. 1 and 2, the tape printer 1 contains a device main body 2 that performs a printing process on the print tape T, a printing tape T, and an ink ribbon R, and is detachably attached to the device main body 2. A tape cartridge C. In the tape cartridge C, a printing tape T with a peeling tape Tb to be printed is accommodated so as to be freely fed out.

  In the apparatus main body 2, an outer shell is formed by an apparatus case 3, and a keyboard 5 having various keys 4 is disposed on the upper surface of the front half of the apparatus case 3. On the other hand, an open / close lid 6 is widely provided on the upper left surface of the rear half of the device case 3, and the open / close lid 6 opens and closes up and down around a hinge (not shown) provided at the rear end. A lid opening button 8 is provided on the front side of the opening / closing lid 6 to open the lid. Further, a rectangular display 9 for displaying an input result from the keyboard 5 and the like is disposed on the upper right side of the rear half of the device case 3.

  When the lid opening button 8 is pressed to open the opening / closing lid 6, a cartridge mounting portion 10 into which the tape cartridge C is detachably mounted is formed in the inside thereof, and the tape cartridge C opens the opening / closing lid 6. In the opened state, it is detachably mounted on the cartridge mounting portion 10. That is, the opening / closing lid 6 opens and closes the cartridge mounting portion 10. Further, the opening / closing lid 6 projects from the lower surface of the left front part, and an operating projection 6a that engages with a hook member 175, which will be described later, and the mounting / non-mounting of the tape cartridge C in a state where the cartridge mounting part 10 is closed are visually recognized. A viewing window 13 is formed.

  A tape discharge port 17 connected to the cartridge mounting portion 10 is formed on the left side of the apparatus case 3, and a tape discharge path 18 is formed between the cartridge mounting portion 10 and the tape discharge port 17. In the apparatus case 3, the tape cutting mechanism 11 that cuts the printing tape T and the tape piece of the cut printing tape T are discharged from the tape discharge port 17 from the upstream side so as to face the tape discharge path 18. The tape discharge mechanism 12 is assembled and built in.

  On the other hand, in the cartridge mounting portion 10, a thermal type print head 21 having a plurality of heating elements in the head cover 20, a platen drive shaft 23 facing the print head 21, and a take-up drive shaft 24 that winds up the ink ribbon R. And a positioning projection 25 of the tape reel 32 to be described later are disposed. The platen drive shaft 23 and the take-up drive shaft 24 pass through the bottom plate 27 of the cartridge mounting portion 10, and a power system that drives the platen drive shaft 23 and the take-up drive shaft 24 in the lower space of the bottom plate 27. A tape feed power system 26 (see FIG. 5) is provided.

  The tape cartridge C is configured such that a tape reel 32 around which a printing tape T is wound and a ribbon reel 33 around which an ink ribbon R is wound at a lower right portion are rotatably accommodated in an upper center portion inside the cartridge case 31. The printing tape T and the ink ribbon R have the same width. A through hole 34 is formed in the lower left portion of the tape reel 32 to be inserted into the head cover 20 that covers the print head 21. Further, in the vicinity of the through-hole 34, a platen roller 35 that is fitted to the platen drive shaft 23 and is driven to rotate is disposed corresponding to a portion where the printing tape T and the ink ribbon R overlap. On the other hand, a ribbon take-up reel 36 is disposed in the vicinity of the ribbon reel 33, and the take-up drive shaft 24 is fitted and rotated.

  When the tape cartridge C is mounted on the cartridge mounting portion 10, the through hole 34 is formed in the head cover 20, the center hole of the tape reel 32 is positioned in the positioning projection 25, and the center hole of the platen roller 35 is driven in the platen drive shaft 23. The center hole of the ribbon take-up reel 36 is inserted into the shaft 24. By the rotational drive of the platen drive shaft 23 and the take-up drive shaft 24, the printing tape T is fed out from the tape reel 32, and the ink ribbon R is fed out from the ribbon reel 33, and the printing tape T and After overlapping and running in parallel, the printing tape T is fed out of the cartridge case 31 from a tape feed port 38 formed on the side surface of the cartridge case 31, and the ink ribbon R is taken up by the ribbon take-up reel 36. In a portion where the print tape T and the ink ribbon R run side by side, the platen roller 35 and the print head 21 face so as to sandwich them, and so-called print feed is performed.

  The printing tape T is composed of a recording tape Ta having a pressure-sensitive adhesive layer formed on the back surface and a release tape Tb adhered to the recording tape Ta by the pressure-sensitive adhesive layer. The printing tape T is wound and accommodated on the tape reel 32 with the recording tape Ta on the outside and the release tape Tb on the inside. In addition, a plurality of types of printing tapes T different in tape type (tape width, ground color of the printing tape T, ground pattern, material (texture), etc.) are prepared. Is housed together. For example, various tape widths of the printing tape T are prepared in the range of 4 to 36 mm, and various tape thicknesses are prepared in the range of 0.1 to 0.8 mm.

  A plurality of holes (not shown) for specifying the type of the printing tape T are provided on the back surface of the cartridge case 31. On the other hand, the cartridge mounting portion 10 is provided with a plurality of tape identification sensors 37 (see FIG. 4) such as microswitches for detecting these bit patterns corresponding to the plurality of holes. By detecting the state of a plurality of holes, the tape type (particularly the tape width) can be determined.

When the tape cartridge C is mounted on the cartridge mounting portion 10 and the opening / closing lid 6 is closed, the print head 21 rotates via a head release mechanism (not shown), and the print head 21 and the platen roller 35 are With the print tape T and the ink ribbon R sandwiched therebetween, the tape printer 1 enters a print standby state.
When the printing operation is instructed after the input / editing of the print data, the platen roller 35 is rotationally driven to feed out the print tape T from the tape cartridge C, and the print head 21 is driven to apply the desired print tape T to the print tape T. Print. At the same time as the printing operation, the ink ribbon R is wound up in the tape cartridge C, but the printed portion of the printing tape T is sent out from the tape discharge port 17 to the outside of the apparatus.
When printing is completed, the printing tape T is half cut by the tape cutting mechanism 11 and the rear end portion of the printed portion of the printing tape T is fully cut. Here, “full cut” is a cutting process in which the entire printing tape T, that is, the recording tape Ta and the release tape Tb, is cut integrally. “Half cut” means recording without cutting the release tape Tb. This is a cutting process for cutting only the tape Ta. In addition, it is good also as a structure which cut | disconnects only the peeling tape Tb as a half cut.
Only the tip of the cut tape piece is discharged from the tape discharge port 17 by the operation of the tape discharge mechanism 12. In this way, a label on which desired characters are printed is created.

  As shown in FIG. 3, the tape cutting mechanism 11 is provided on the downstream side in the tape feeding direction with respect to the full cutter 61 and a scissor-type full cutter 61 that fully cuts the printing tape T. The half-cutter 62 of a cut-off type, a stepping motor, a cutter motor 63 serving as a drive source for the full cutter 61 and the half cutter 62, and a cutter for transmitting the power of the cutter motor 63 to the full cutter 61 and the half cutter 62 A cutter position detection sensor 67 (see FIG. 5) is disposed to face one position of the peripheral surface of the power transmission mechanism 64 and the crank disk 74 constituting the cutter power transmission mechanism 64 and detects the initial position of the crank disk 74. 4). Then, the crank disc 74 is rotated forward from the initial position, and then reversely rotated and returned to the initial position, whereby the full cutter 61 performs a cutting operation, and the crank disc 74 is rotated reversely from the initial position and then rotated forward. By returning to the initial position, the half cutter 62 performs a cutting operation.

  A control system of the tape printer 1 will be described with reference to FIG. The tape printing apparatus 1 includes an operation unit 201, a printing unit 202, a cutting unit 203, and a detection unit 204. The tape printer 1 also includes a display driver 211 that drives the display 9, a head driver 212 that drives the print head 21, a print feed motor driver 213 that drives the tape feed motor 41, and a cutter that drives the cutter motor 63. A drive unit 205 including a motor driver 214 is further provided. And it has the control part 200 which is connected with these each part and controls the tape printer 1 whole.

The operation unit 201 includes a keyboard 5 and a display 9, and functions as an interface with the user, such as inputting character information from the keyboard 5 and displaying various information on the display 9.
The printing unit 202 includes a tape feed motor 41 and a print head 21 for rotating a platen roller 35 and a discharge drive roller 111 described below, and the platen roller 35 is rotated by the drive of the tape feed motor 41 so that the print tape is printed. Send T Further, the print head 21 is driven based on the input character information, whereby printing is performed on the print tape T being sent. In the printing unit 202, the discharge driving roller 111 is rotated by driving the tape feeding motor 41, and the printing tape T is discharged.
The cutting unit 203 includes a cutter motor 63 that operates the full cutter 61 and the half cutter 62. When the cutter motor 63 is driven, the full cutter 61 and the half cutter 62 perform half-cutting and printing on the printing tape T after printing. Make a full cut.
The detection unit 204 includes a tape identification sensor 37, a cutter position detection sensor 67, and a slider detector 193, which will be described later. The detection unit 204 detects the tape type, the cutter position, and the presence / absence of the print tape T, and each detection result. Is output to the control unit 200.

  The control unit 200 includes a CPU (Control Processing Unit) 215, a ROM (Read Only Memory) 216, a RAM (Random Access Memory) 217, and a controller (IOC: Input Output Controller) 218, which are connected to each other via an internal bus 219. . The CPU 215 inputs various signals and data from each unit in the tape printer 1 via the controller 218 in accordance with a control program in the ROM 216. Further, various data in the RAM 217 is processed based on the various signals / data input, and various signal data is output to each unit in the tape printer 1 via the controller 218. Thereby, for example, based on the detection result of the detection unit 204, the control unit 200 controls printing processing and cutting processing.

  As shown in FIG. 5, the tape feed power system 26 includes a tape feed motor 41 that is a power source, and a feed power transmission mechanism 42 that transmits the power of the tape feed motor 41 to the platen drive shaft 23 and the take-up drive shaft 24. It is equipped with. That is, the tape feed motor 41 is also used as a power source for the platen drive shaft 23 and the take-up drive shaft 24. Although details will be described later, the tape feed motor 41 is also used as a power source for the discharge drive roller 111 of the tape discharge mechanism 12.

  The feed power transmission mechanism 42 is engaged with an input gear 51 that meshes with a gear formed on the main shaft of the tape feed motor 41, and meshes with the input gear 51, and power is supplied to the platen drive shaft 23 side and the take-up drive shaft 24 side. A branch gear 52 that branches, a first output gear 53 that meshes with the branch gear 52 and rotates the take-up drive shaft 24, a relay gear 54 that meshes with the branch gear 52, a mesh with the relay gear 54, And a second output gear 55 for rotating the platen roller 35 by pivotally mounting it. When the tape feed motor 41 is driven, the platen drive shaft 23 and the take-up drive shaft 24 rotate through the gears. As a result, the print tape T is fed, and the ink ribbon R is wound up in synchronization with the tape feed.

  The tape discharge mechanism 12 will be described with reference to FIGS. The tape discharge mechanism 12 includes a discharge driving roller 111 (first roller) that is in rolling contact with the peeling tape Tb side of the printing tape T, and a discharge driven roller 141 (second roller) that is in contact with the recording tape Ta side. The printing tape T is rotated and fed by a feed roller).

  The tape discharge mechanism 12 includes a drive roller portion 101 having a discharge drive roller 111, a driven roller portion 102 having a discharge driven roller 141 facing the discharge drive roller 111, and a tape feed branched from the feed power transmission mechanism 42. A discharge power transmission mechanism 103 (see FIG. 5) that transmits the rotational power of the motor 41 to the discharge drive roller 111 is provided.

  The tape discharge mechanism 12 supports the driven-side rotating body 105 and the driven-side rotating body 105 and the driven-side rotating body 105, which are each formed in a gear shape and are engaged with each other in an overlapping state. Rotating body slider 106 configured to be slidable so that driven side rotating body 105 engages and disengages with respect to 104, detection mechanism 107 for detecting rotating body slider 106 slid to one moving end, and opening / closing lid 6 In conjunction with opening and closing, a separation mechanism 108 for separating and contacting the discharge driven roller 141 with respect to the discharge drive roller 111 is provided.

  As shown in FIG. 7, the drive roller unit 101 includes a discharge drive roller 111 and a drive roller holder 112 that rotatably holds the discharge drive roller 111 and the drive-side rotator 104.

  The drive roller holder 112 is erected rearward from the downstream edge of the drive roller opening 114 on the downstream side in the tape feed direction, and the opening forming piece 113 facing the driven roller portion 102 and having a substantially rectangular drive roller opening 114 formed therein. It is comprised from the drive side attachment piece 115 attached to (illustration omitted). A pair of driving roller bearing portions 116 are formed on the upper and lower outer sides of the driving roller opening 114. The discharge driving roller 111 and the driving side rotating body 104 are rotatably supported by the pair of driving roller bearing portions 116 and slightly protrude from the driving roller opening 114 toward the driven roller portion 102. In addition, the driving roller opening 114 has a rotating body receiving portion 117 in which the outer periphery of the driving side rotating body 104 is positioned at the middle of the upper and lower edges of the edge on the downstream side in the tape feeding direction. And projecting in a substantially “C” shape.

  The discharge drive roller 111 includes a drive roller shaft 121 whose upper and lower ends are supported by a pair of drive roller bearing portions 116, a drive-side upper roller body 122 and a drive-side lower roller that are rotatably supported by the drive roller shaft 121. And a main body 123.

An upper roller fitting convex portion 124 that fits into a driving side rotating body hole 132 (described later) of the driving side rotating body 104 is formed at the lower end portion of the driving side upper roller body 122. On the other hand, an upper roller gear portion 125 is formed at the upper end portion of the drive-side upper roller body 122.
Further, the driving-side lower roller body 123 is formed in the same manner as the driving-side upper roller body 122, and a lower roller fitting that fits into the driving-side rotating body hole 132 of the driving-side rotating body 104 is fitted to the upper end portion. A convex portion 126 is formed, and a lower roller gear portion 127 is formed at a lower end portion. The downstream end of the discharge power transmission mechanism 103 is engaged with the lower roller gear portion 127.

  The driving side rotating body 104 is pivotally attached to the driving roller shaft 121 and is provided between the driving side upper roller body 122 and the driving side lower roller body 123. The drive-side rotator 104 has a gear-tooth-like drive-side rotator tooth portion 131 (first concavo-convex portion) that is uneven in the circumferential direction on the outer peripheral surface, and the upper roller fitting at the center. A driving-side rotating body hole portion 132 into which the convex portion 124 and the lower roller fitting convex portion 126 are fitted and the driving roller shaft 121 is inserted is formed. The drive-side rotator 104 is formed to have substantially the same diameter as the drive-side upper roller body 122 and the drive-side lower roller body 123 of the discharge drive roller 111, and in the state where the drive-side rotator 104 is attached to the drive roller shaft 121, It does not protrude in the radial direction with respect to the roller body 122 and the driving side lower roller body 123 (see FIG. 11).

  Then, the upper roller fitting convex portion 124 and the lower roller fitting convex portion 126 are fitted into the driving side rotating body hole portion 132, respectively, so that the driving side upper roller body 122, the driving side lower roller body 123, and the drive The side rotator 104 is pivotally supported by the drive roller shaft 121 as a unit. When the rotational power of the tape feed motor 41 is transmitted to the lower roller gear portion 127 via the discharge power transmission mechanism 103, the driving side upper roller body 122, the driving side lower roller body 123, and the driving side rotating body 104 are integrated. Rotate as Note that the printing tape T is fed so that the driving side rotating body 104 and the driven side rotating body 105 are positioned at a substantially intermediate portion in the width direction regardless of the tape width.

  As shown in FIG. 8, the driven roller unit 102 includes a discharge driven roller 141 and a driven roller holder 142 that rotatably holds the discharge driven roller 141 and the driven side rotating body 105.

  The driven roller holder 142 rotatably supports the fixed holder 143 fixed to the base frame and the discharge driven roller 141, and slides on the fixed holder 143 so that the discharge driven roller 141 is in contact with the discharge driving roller 111. And a movable holder 144 accommodated freely.

  The fixed holder 143 is formed in a box shape in which the surface with respect to the driving roller unit 101 and the upstream surface in the tape feeding direction are opened, and are formed on the lower surface of the upper wall portion and the upper surface of the lower wall portion, and guides the slide of the movable holder 144. A guide block having a pair of upper and lower guide grooves 151 and a circular guide hole 152 that is provided at a substantially intermediate portion at the end opposite to the drive roller portion 101 and guides the slide rod 166 of the movable holder 144. 153, projecting on the downstream side in the tape feed direction above the guide block 153, and extending from the hook support shaft 154 for pivotally supporting a hook member 175, which will be described later, and the open edge on the upstream side in the tape feed direction And a driven side attachment piece 155 attached to a base frame (not shown). Further, although not shown, an interlocking engagement receiving portion that engages with an interlocking engagement portion 198 described later is formed on the inner surface of the lower side of the side wall portion of the fixed holder 143.

  As shown in FIG. 9, the movable holder 144 is formed in a box shape having an open surface with respect to the driving roller unit 101. A pair of upper and lower driven roller bearings 161 that support a driven roller shaft 171 (described later) is formed, and the upper surface of the lower wall portion is opposite to the driving roller unit 101 side with respect to the lower driven roller bearing portion 161. A rotating member bearing portion 162 that supports the lower end of the rotating member support shaft 191 (described later) is formed on the side.

The movable holder 144 is formed on the upper surface of the upper wall portion and the lower surface of the lower wall portion, and a pair of upper and lower guide ribs 163 engaged with the respective guide grooves 151, and the vertical direction of the inner surface on the upstream side and the inner surface on the downstream side in the tape feeding direction. A pair of slide guides 164 that extend in the front-rear direction at a substantially intermediate portion and guide the slide of the rotator slider 106 and a guide block 153 of the fixed holder 143 are in contact with one end of a return spring (not shown) described later. A spring receiving portion (not shown), a slide rod 166 protruding from the spring receiving portion on the opposite side (front side) of the driving roller portion 101 and penetrating through the guide hole 152 of the fixed holder 143 , and above the slide rod 166 A horizontal portion 167 formed so as to connect the upstream side surface and the downstream side surface in the tape feeding direction; The dynamic roller portion 101 projecting from the end portion upper face of the opposite side, and a holder engagement receivers 168 hook member 175 is engaged. Further, a retaining pin 169 functioning as a retaining member for the slide rod 166 from the guide hole 152 is screwed to the tip of the slide rod 166.

  The discharge driven roller 141 includes a driven roller shaft 171 whose upper and lower ends are supported by a pair of driven roller bearing portions 161, a driven-side upper roller body 172 and a driven-side lower roller that are rotatably supported by the driven roller shaft 171. And a main body 173, which rotates accompanying the rotation of the discharge driving roller 111.

  The driven-side rotator 105 is rotatably supported around the driven roller shaft 171, and is provided between the driven-side upper roller body 172 and the driven-side lower roller body 173 together with the rotating body slider 106 that supports the driven-side rotator body 171. Yes. The driven-side rotating body 105 is formed with a gear-tooth-shaped driven-side rotating body tooth portion 136 (second uneven portion) that is uneven in the circumferential direction on the outer peripheral surface, and a circular driven body through which the driven roller shaft 171 passes. A side rotator hole 137 is formed. The driven-side rotator 105 is formed to have substantially the same diameter as the driven-side upper roller body 172 and the driven-side lower roller body 173 of the discharge driven roller 141, and the rotator slider 106 has moved to the retracted position (details will be described later). ) Does not protrude in the radial direction with respect to the driven-side upper roller body 172 and the driven-side lower roller body 173 (see FIG. 11).

  The driven-side rotator teeth 136 are formed in a complementary shape to the drive-side rotator teeth 131, and are configured such that the drive-side rotator 104 and the driven-side rotator 105 can be engaged with each other. The driven-side rotator 105 is engaged with the drive-side rotator 104 in an overlapping state when the print tape T is not present between the driven-side rotator 104 and the rotation of the drive-side rotator 104. Rotate. When the printing tape T is sandwiched between the driving side rotating body 104 and the driven side rotating body 105, the engagement is released from the driving side rotating body 104. The overlap width between the driving side rotating body 104 and the driven side rotating body 105 is, for example, about several mm.

  The separation / contact mechanism 108 moves the discharge driven roller 141 to the nip position where the print tape T can be sandwiched between the discharge drive roller 111 and the open / close lid 6 in association with the closing of the opening / closing lid 6. In conjunction with the opening of the lid 6, the discharge driven roller 141 is moved to a separated position separated from the discharge drive roller 111. The separation / contact mechanism 108 includes a hook member 175 configured to be rotatable about the hook support shaft 154 of the fixed holder 143, and a return spring externally fitted to the slide rod 166 of the movable holder 144. The return spring has one end in contact with the spring receiving portion of the movable holder 144 and the other end in contact with the guide block 153 of the fixed holder 143, and biases the movable holder 144 toward the driving roller portion 101 with respect to the fixed holder 143. ing.

  The hook member 175 is connected to a hook engaging portion 176 that engages with the holder engagement receiving portion 168 of the fixed holder 143 and bends from the hook engaging portion 176, and is a shaft through which the hook support shaft 154 is inserted at a substantially central portion. The hole is formed by a shaft hole forming part 177 and a protrusion receiving part 178 that is continuous from the shaft hole forming part 177 and is engaged with the operating protrusion 6a formed on the opening / closing lid 6. Although not shown, the hook support shaft 154 has an engagement spring (torsion coil spring) that urges the hook member 175 to rotate in the direction in which the hook engagement portion 176 engages with the holder engagement receiving portion 168. It has been incorporated.

  The hook member 175 is biased by the engagement spring when the opening / closing lid 6 is opened and the operating projection 6a is disengaged from the projection receiving portion 178, and the hook engaging portion 176 engages with the holder engagement receiving portion 168. Rotate in the direction. As a result, the discharge driven roller 141 moves to the separated position against the return spring. On the other hand, when the opening / closing lid 6 is closed and the operating projection 6a is engaged with the projection receiving portion 178, the hook engaging portion 176 is rotated in a direction to disengage from the holder engagement receiving portion 168 against the engaging spring. Move. As a result, the discharge driven roller 141 is returned to the nip position by the return spring.

In this way, the discharge driven roller 141 moves to the separation position in conjunction with the opening of the opening / closing lid 6, and the gap between the discharge drive roller 111 and the discharge driven roller 141 is widened. For this reason, when the tape cartridge C is set in the cartridge mounting portion 10, the print tape T may be disposed between the discharge drive roller 111 and the discharge driven roller 141 even when the print tape T protrudes from the tape delivery port 38. It is possible to set the tape cartridge C so as to be surely entered. After the tape cartridge C is set in the cartridge mounting portion 10, the discharge driven roller 141 and the discharge driven roller 141 are moved by closing the open / close lid 6 and the discharge driven roller 141 is moved to the nip position in conjunction therewith. Thus, the printing tape T can be brought into a state in which it can be rotationally fed.
Note that the rotating member 192 to be described later, because it is supported by the movable holder 144 with discharge slave moving roller 141, the disjunction mechanism 108 is adapted to reciprocate in conjunction with the opening and closing of the cover 6.

  The rotator slider 106 is formed in a substantially rectangular shape in plan view. The rotator support portion 181 that rotatably supports the driven-side rotator 105 in the half portion on the drive roller portion 101 side, and the drive roller portion 101 side are The rotating member engaging portion 182 is formed to be thicker than the rotating body support portion 181 in the opposite half.

  A long hole 183 (see FIG. 10) extending in the sliding direction of the rotary body slider 106 is formed in the rotary body support portion 181, and a driven roller shaft 171 is inserted through the long hole 183 to follow the discharge. The rotating body slider 106 is slidable with respect to the roller 141. Further, on the upper surface of the rotator support portion 181, a support convex portion 184 protrudes along the outer edge of the arc portion on the drive roller portion 101 side of the long hole 183, and the support convex portion 184 is a driven side rotator. The driven side rotating body 105 is rotatably supported around the driven roller shaft 171 by being engaged with the driven side rotating body hole portion 137 of 105. On the other hand, the rotation member engagement portion 182 is formed with an engagement hole 185 in which an engagement arm 195 of the rotation member 192 described later is engaged.

  The rotating body slider 106 includes a forward position where the driven side rotating body 105 supported by the rotating body slider 106 is engaged with the driving side rotating body 104, and a retracted position where the driven side rotating body 105 is disengaged from the driving side rotating body 104. In between, they are guided by the slide guide 164 and slide.

  The detection mechanism 107 includes a rotating member support shaft 191 having a lower end supported by a rotating member bearing portion 162 formed on the movable holder 144, a rotating member 192 rotatably supported by the rotating member support shaft 191, and a substantially square shape. And a slider detector 193 attached in the vicinity of the lower portion of the guide block 153 of the fixed holder 143 via the attachment substrate 199. Further, the detection mechanism 107 is a rotation biasing spring that biases the rotation of an engagement arm 195 (described later) engaged with the rotary slider 106 in the direction in which the rotary slider 106 slides to the forward position. (Not shown).

  The rotating member 192 has a cylindrical shaft portion 194 through which the rotating member support shaft 191 is inserted, and an engaging portion that extends in the radial direction from the upper end portion of the shaft portion 194 and engages with the engaging hole 185. An engagement arm 195 and a detection arm 196 extending in the radial direction from the lower end portion of the shaft portion 194 so as to be substantially orthogonal to the engagement arm 195 and having a tip portion (detected portion) facing the slider detector 193 I have.

  The rotating member 192 has a cylindrical shaft portion 194 through which the rotating member support shaft 191 is inserted, and an engaging portion that extends in the radial direction from the upper end portion of the shaft portion 194 and engages with the engaging hole 185. An engagement arm 195 and a detection arm 196 extending in the radial direction from the lower end portion of the shaft portion 194 so as to be substantially orthogonal to the engagement arm 195 and having a tip portion (detected portion) facing the slider detector 193 I have. The detection arm 196 is formed longer than the engagement arm 195.

The rotating member 192 rotates in conjunction with the slide between the forward position and the backward position of the rotating body slider 106 because the engaging arm 195 is engaged with the engaging hole 185 of the rotating body slider 106. The engagement arm 195 and the detection arm 196 of the rotating member 192 reciprocate around the shaft portion 194 (the rotating member support shaft 191) in conjunction with the slide between the forward position and the backward position of the rotating body slider 106. It is like that. In other words, the shaft portion 194 converts the rotation of the engagement arm 195 in the front-rear direction into the rotation of the detection arm 196 in the left-right direction, but the detection arm 196 is longer than the engagement arm 195. The rotation width of the detection arm 196 is several times greater than the rotation width. Hereinafter, the rotation direction of the engagement arm 195 and the detection arm 196 when the rotator slider 106 slides from the advance position to the retract position is referred to as the retract rotation direction, and the rotator slider 106 moves from the retract position to the advance position. The rotation direction of the engagement arm 195 and the detection arm 196 when sliding to the forward direction is referred to as the forward rotation direction.

  The detection arm 196 is formed with a latching portion 197 that is engaged with one end of the rotation biasing spring on the lower surface of the bent portion that is bent in a crank shape in plan view at a substantially intermediate portion thereof. The rotation urging spring is constituted by a torsion coil spring, wound around the rotating member support shaft 191, one end locked to the latching portion 197, and the other end locked to the inside of the fixed holder 143. . The rotation urging spring urges the engagement arm 195 in the forward rotation direction. That is, the rotation biasing spring biases the rotating body slider 106 toward the forward movement position via the engagement arm 195.

  Further, an interlocking engagement portion 198 is formed on the shaft portion 194 of the rotating member 192 in the vicinity of the proximal end portion of the detection arm 196 and protrudes on the opposite side to the extending direction of the engagement arm 195. The rotating member 192 is supported by the movable holder 144 together with the discharge driven roller 141, and interlocked engagement receivers formed inside the fixed holder 143 in conjunction with the movement of the discharge driven roller 141 from the nip position to the separated position. It moves to the engagement position where it engages with the part, and in conjunction with the movement of the discharge driven roller 141 from the separation position to the nip position, it moves to the disengagement position where it disengages from the interlocking engagement receiving part.

  When the interlocking engagement portion 198 engages with the interlocking engagement receiving portion, the engagement arm 195 rotates in the reverse rotation direction against the rotation biasing spring, and the rotating body slider 106 moves relative to the discharge driven roller 141. To move to the reverse position. When the interlocking engagement portion 198 is disengaged from the interlocking engagement receiving portion, the engagement arm 195 is biased by the rotation biasing spring to rotate in the forward rotation direction, and the rotating body slider 106 is discharged to the discharge driven roller 141. Move to the forward position.

The slider detector 193 is composed of a transmissive optical sensor (photo interrupter), and is disposed so as to face the distal end portion of the detection arm 196 rotated to the rotation end in the backward rotation direction. The slider detector 193 detects that the light has been blocked by inserting the tip of the detection arm 196 between the light emitting element and the light receiving element that are arranged to face each other, and the rotator slider 106 has been slid to the retracted position. Is done.
The slider detector 193 may be configured by a contact center, but by using a non-contact sensor as in the present embodiment, the rotary slider 106 moves backward as in the case where the slider detector 193 is configured by a contact sensor. Since it is not necessary to apply a force to press the contact point of the sensor when moved to the position, the rotary slider 106 can be moved with the lightest possible force and can be detected even when the printing tape T is thin. be able to.

With reference to FIGS. 10 to 13, a series of movements around the tape discharging mechanism 12 when the opening / closing lid 6 is opened and closed and when the printing tape T is fed (discharged) will be described.
10 to 13, when the opening / closing lid 6 is opened, the operating projection 6 a of the opening / closing lid 6 is disengaged from the projection receiving portion 178 of the hook member 175, and the hook engagement of the hook member 175 is performed. The mating portion 176 engages with the holder engagement receiving portion 168. As a result, the discharge drive roller 111 moves from the nip position to the separated position, and the rotating member 192 moves from the disengaged position to the engaged position. As the discharge driving roller 111 moves to the separation position, the driven-side rotating body 105 supported around the driven roller shaft 171 is also separated from the driving-side rotating body 104. The gap with the rotating body 105 is widened.

  Further, as the rotating member 192 moves to the engaging position, the interlocking engagement portion 198 engages with the interlocking engagement receiving portion, and the engagement arm 195 and the detection arm 196 rotate in the backward rotation direction. As a result, the rotator slider 106 moves to the retracted position with respect to the discharge drive roller 111, so that the driven rotator 105 supported by the rotator slider 106 moves toward the drive side rotator 104 with respect to the discharge drive roller 111. It does not protrude.

  In this manner, in conjunction with the opening of the opening / closing lid 6, the discharge driven roller 141 moves to the separation position, and the rotator slider 106 moves to the retreat position with respect to the discharge drive roller 111. The gap between the discharge driven roller 141 is widened and the gap between the driving side rotating body 104 and the driven side rotating body 105 is widened. Therefore, when the tape cartridge C is set in the cartridge mounting portion 10, the print tape T is also placed between the discharge drive roller 111 and the discharge driven roller 141 even when the print tape T protrudes from the tape delivery port 38. In addition, the tape cartridge C can be set so as to surely enter between the driving side rotating body 104 and the driven side rotating body 105.

  10 to 13, when the opening / closing lid 6 is closed after the tape cartridge C is mounted, the operation projection 6 a of the opening / closing lid 6 is engaged with the projection receiving portion 178 of the hook member 175, The hook engaging portion 176 of the hook member 175 is disengaged from the holder engaging receiving portion 168. As a result, the discharge drive roller 111 moves from the separation position to the nip position, and the rotating member 192 moves from the engagement position to the release position. As the rotating member 192 moves to the disengagement position, the interlocking engagement portion 198 is disengaged from the interlocking engagement receiving portion.

  When the printing tape T is not sandwiched between the driving side rotating body 104 and the driven side rotating body 105, the engagement arm 195 and the detection arm 196 are rotated in the forward rotation direction. As a result, the rotator slider 106 moves to the advance position with respect to the discharge driving roller 111, so that the driven rotator 105 supported by the rotator slider 106 is engaged with the drive rotator 104 in an overlapping state. To do. Further, in this state, since the detection arm 196 does not face the slider detector 193, the slider detector 193 detects that the rotating body slider 106 has not moved to the retracted position, and is driven by the driving side rotating body 104. It is detected that there is no printing tape T between the side rotating body 105 and between the discharge driving roller 111 and the discharge driven roller 141.

  As shown in each of FIG. 10 to FIG. 13C, when the printing process is performed and the printing tape T is inserted between the discharge driving roller 111 and the discharge driven roller 141, the driven side rotating body 105 moves around the driven roller shaft 171. Therefore, the driven-side rotator 105 rotates to receive the printing tape T, and the drive-side rotator 104 and the driven-side rotator 105 do not obstruct the passage of the medium to be fed.

  Then, when the printing tape T is sandwiched between the drive side rotator 104 and the driven side rotator 105, the driven side rotator 105 is disengaged from the drive side rotator 104, and the overlap state with the drive side rotator 104 is maintained. It will be resolved. As a result, the rotator slider 106 that supports the driven-side rotator 105 moves from the advance position to the retract position by the amount corresponding to the cancellation of the overlap state in addition to the thickness of the printing tape T.

  In conjunction with the movement of the rotator slider 106 to the retreat position, the engagement arm 195 and the detection arm 196 of the rotation member 192 rotate in the retreat rotation direction, and the tip of the detection arm 196 faces the slider detector 193. . Then, the slider detector 193 detects that the rotating body slider 106 has moved to the retracted position, and between the driving side rotating body 104 and the driven side rotating body 105 and between the discharge driving roller 111 and the discharging driven roller 141. It is detected that there is a printing tape T in between.

  Here, the rotation member 192 has a detection arm 196 that is longer than the engagement arm 195, and the tip of the detection arm 196 that faces the slider detector 193 is engaged with the engagement arm 195 with respect to the shaft portion 194. The detection arm 196 is rotated more than the rotation distance of the engagement arm 195 according to the movement distance between the forward movement position and the backward movement position of the rotator slider 106 because it is provided radially outside the joint portion. The distance increases. Therefore, it can be detected with higher accuracy that the rotator slider 106 has moved to the retracted position. Further, since the rotation distance of the detection arm 196 is larger than the rotation distance of the engagement arm 195 according to the movement distance of the rotation body slider 106, the overlap between the driving side rotation body 104 and the driven side rotation body 105 is overlapped. It is also possible to adopt a configuration in which

  As described above, according to the tape printer 1 of the present embodiment, when the tape cartridge C is set in the cartridge mounting unit 10, even when the printing tape T protrudes from the tape delivery port 38, the printing tape The tape cartridge C can be set so that T enters between the discharge driving roller 111 and the discharge driven roller 141 and between the driving side rotating body 104 and the driven side rotating body 105. In addition, the presence or absence of the printing tape T between the discharge driving roller 111 and the discharge driven roller 141 can be reliably detected.

  In the present embodiment, as described above, the driving-side rotating body 104 and the driven-side rotating body 105 have the driving-side rotating body tooth portion 131 and the driven-side rotating body tooth portion 136, respectively. The driving side rotating body 104 and the driven side rotating body 105 may be engaged with each other in an overlapped state, and may be disengaged by the sandwiched printing tape T.

With reference to FIG. 14, the drive side rotary body 254 and the driven side rotary body 255 which concern on other embodiment are demonstrated. The drive-side rotator 254 includes a drive-side small-diameter portion 261, a drive-side first large-diameter portion 262 and a drive-side second large-diameter provided coaxially with the drive-side small-diameter portion 261 on both end surfaces of the drive-side small-diameter portion 261. It is formed integrally with the portion 263, and as a whole, it is formed in a roller shape having a driving side uneven portion (not shown) whose outer peripheral surface is uneven in the axial direction. The drive-side first large diameter portion 262 and the drive-side second large diameter portion 263 are formed to have substantially the same diameter as the drive-side upper roller body 122 and the drive-side lower roller body 123 of the discharge drive roller 111, and the drive roller shaft In the state of being pivotally attached to 121, the drive side upper roller body 122 and the drive side lower roller body 123 do not protrude in the radial direction.

The driven-side rotating body 255 includes a driven-side large-diameter portion 266, a driven-side first small-diameter portion 267 and a driven-side second that are provided coaxially with the driven-side large-diameter portion 266 at both end surfaces of the driven-side large-diameter portion 266. The roller is integrally formed with the small-diameter portion 268, and is formed in a roller shape having an outer peripheral surface that is uneven in the axial direction and has a driven-side uneven portion (not shown) that is complementary to the drive-side uneven portion. The driven-side large-diameter portion 266 is formed to have substantially the same diameter as the driven-side upper roller body 172 and the driven-side lower roller body 173 of the discharge driven roller 141, and the driven-side large-diameter portion 266 is driven in a state where the rotating body slider 106 is moved to the retracted position. The side upper roller body 172 and the driven side lower roller body 173 do not protrude in the radial direction.
Although not shown, as in the previous embodiment, the driving side rotating body 254 is formed with a driving side rotating body hole, and the driven side rotating body 255 is formed with a driven side rotating body hole. .

  Also with this configuration, the driving-side rotator 254 and the driven-side rotator 255 are engaged with each other in an overlapping state, and are disengaged by the sandwiched printing tape T. However, like the drive-side rotator 104 and the driven-side rotator 105 according to the previous embodiment, the drive-side rotator teeth 131 and the follower-side rotator teeth 136 have shapes that are uneven in the circumferential direction. Therefore, even when the printing tape T is thin or made of a low-strength material, the printing tape T sandwiched between the driving-side rotating body tooth portion 131 and the driven-side rotating body tooth portion 136 is not connected to the driving side. Since it can be made difficult to bend into the shape along the rotating body tooth part 131 and the driven-side rotating body tooth part 136, an overlap state can fully be eliminated. Therefore, the rotator slider 106 can be reliably moved by the overlap amount.

  DESCRIPTION OF SYMBOLS 1: Tape printer 6: Opening and closing lid 10: Cartridge mounting part 12: Tape discharge | emission mechanism 104: Drive side rotary body 105: Driven side rotary body 106: Rotation body slider 108: Separation mechanism 111: Ejection drive roller 141: Ejection driven Roller 193: Slider detector 194: Shaft portion 195: Engagement arm 196: Detection arm 198: Interlocking engagement portion T: Printing tape

Claims (6)

A feed roller that has a first roller and a second roller and sandwiches and feeds a medium to be fed;
Separation of the second roller with respect to the first roller between a nip position where the medium to be fed can be sandwiched between the first roller and a separation position separated from the first roller. Contact mechanism,
A first rotating body pivotally attached to a first roller shaft of the first roller;
A second rotating body that engages with the first rotating body in an overlapped state and is disengaged by the fed medium sandwiched between the first rotating body;
The second rotating body is rotatably supported around the second roller axis of the second roller and is movable with respect to the second roller, and the second rotating body is engaged with the first rotating body. A rotating body support member configured to be movable relative to the second roller between a forward position where the second rotating body is engaged and a retracted position where the second rotating body is disengaged from the first rotating body;
In conjunction with the movement of the second roller from the nip position to the separation position, the rotary member support member is moved from the forward movement position to the backward movement position with respect to the second roller. In conjunction with the movement from the separated position to the nip position, an interlocking mechanism that moves the rotating body support member from the retracted position to the advanced position with respect to the second roller;
A medium feeding device comprising: The interlocking mechanism is
Biasing means for biasing the rotating body support member toward the forward movement position;
Engagement engagement that engages with the movement of the second roller from the nip position to the separation position and that disengages with the movement of the second roller from the separation position to the nip position. And an interlocking engagement receiving part,
When the interlocking engagement portion and the interlocking engagement receiving portion are engaged, the rotating body support member is moved from the advance position to the retract position against the biasing means, and the interlock engagement is performed. 2. The medium feeding according to claim 1, wherein the urging unit allows the rotating member support member to move to the forward movement position by disengaging the engagement portion and the interlocking engagement receiving portion. apparatus. The interlocking mechanism engages with the shaft portion having the interlocking engagement portion formed on the outer peripheral surface and the rotating body support member, and interlocks with the engagement / disengagement of the interlocking engagement portion and the interlocking engagement receiving portion. And a support member engaging part that reciprocally rotates around the shaft part so as to move the rotary body support member between the forward position and the reverse position. ,
The rotating member moves to an engaging position where the interlocking engagement portion engages with the interlocking engagement receiving portion in conjunction with the movement of the second roller from the nip position to the separation position. 3. The interlocking engagement portion moves to a disengagement position where the two engagement rollers are disengaged from the interlocking engagement receiving portion in conjunction with the movement of the two rollers from the separation position to the nip position. Media feeder. The rotating member further includes a detected portion that reciprocally rotates around the shaft portion in conjunction with movement of the rotating body support member between the forward position and the backward position,
The medium feeding device according to claim 3, further comprising detection means facing one rotation end position of the detected portion. A medium setting unit in which the medium to be fed to be rotated and fed by the feed roller is set;
An opening and closing member that opens and closes the medium setting unit,
The separation / contact mechanism moves the second roller from the nip position to the separation position in conjunction with the opening of the opening / closing member, and moves the second roller in the separation position in conjunction with the closure of the opening / closing member. 5. The medium feeding device according to claim 1, wherein the medium feeding device is moved to the nip position. A medium feeding device according to any one of claims 1 to 5;
Printing means for performing printing on the medium to be fed rotated by the medium feeding device;
A printing apparatus comprising:

Images