JP2019177984A - Printer - Google Patents

Abstract

To provide a printer that enables a printing medium to be smoothly taken out by avoiding being caught in a swing member, even when the printing medium sags.SOLUTION: A printer comprises: a pair of support members sandwiching a printing medium like a roll; and a pair of swing members which have a pair of holding pins for turnably holding the printing medium, which are swingably attached to the support members, respectively, and which abut on the printing medium so as to swing in the direction of bringing the pair of printing media close to each other. A part protruding from the support member for the swing member to a holding area of the printing medium is provided with an inclined plane that forms an outer shape protruding from the support member in the direction of taking out the printing medium.SELECTED DRAWING: Figure 9

Description

The present invention relates to a printer.

  Conventionally, when a roll-shaped print medium is loaded, the swinging member comes into contact with the print medium and swings, and the holding pin enters the print medium tube so that the print medium is held and the print medium is taken out. A printer is known in which the swinging member and the holding pin return to their original positions by the urging force of the urging means (see, for example, Patent Document 1).

JP 2008-87861 A

  However, in the conventional technique, when the held print medium is taken out, the print medium (sheet) in which a part of the print medium (roll) is bent and hung is caught by the swinging member returned to the original position and taken out. May become complicated.

  In view of the above, an object of one aspect of the present invention is to provide a printer capable of smoothly removing a print medium while avoiding the print medium from being caught on a swing member even when the print medium is bent.

  According to one aspect of the present invention, the apparatus includes a pair of support members that sandwich the roll-shaped print medium and a pair of holding pins that rotatably hold the print medium, and is swingably attached to the support member. A pair of oscillating members that oscillate in a direction in which the pair of holding pins approach each other by coming into contact with the print medium, and an urging force that oscillates in a direction in which the pair of holding pins separate from each other. A portion projecting from the support member to the print medium holding region of the swinging member has an outer shape projecting from the support member in the direction of taking out the print medium. A printer with an inclined surface to form is provided.

  According to one aspect of the present invention, even when a part of the print medium is bent, the print medium can be smoothly taken out by avoiding the print medium from being caught on the swinging member.

FIG. 1 is a perspective view of a printer 100 according to an embodiment of the present invention. FIG. 2 is a schematic configuration diagram of the printer 100 according to the embodiment of the present invention. FIG. 3 is a view showing a state where the cover 11 is opened. FIG. 4 is a diagram illustrating a state where the ribbon supply shaft 33 is in the ribbon exchange position. FIG. 5 is a perspective view of the printer 100 according to the embodiment of the present invention in an open state. FIG. 6 is a plan view of the printer 100 and the roll guide 60 constituting the printer 100 according to the embodiment of the present invention. FIG. 7 is a cross-sectional view showing a roll guide 60 constituting the printer 100 according to the embodiment of the present invention. FIG. 8 is a schematic view of the support member 65 and the swinging member 70 that constitute the roll guide 60, as viewed in the direction of arrows VIII in FIGS. 6 and 7. 9 is a cross-sectional view taken along line IX-IX in FIG. 10 is a cross-sectional view taken along line XX of FIG. FIG. 11 is a perspective view of the support member 65 constituting the roll guide 60. FIG. 12 is a perspective view of the swing member 70 (arm portion 71) constituting the roll guide 60. FIG. 13 is a rear view of FIG. FIG. 14 is a perspective view of the swing member 70 (retracting operation unit 76) constituting the roll guide 60. FIG. 15 is a view corresponding to the right side view of FIG. 12 and the left side view of FIG. 13, and is a view when the second extending portion 73 is extended from the form shown in FIGS. 12 and 13. . FIG. 16 is a view for explaining the operation (after the arm portion 71 is swung) for loading and holding the print medium M in the roll guide 60, and corresponds to FIG. FIG. 17 is a view for explaining the operation (after the arm portion 71 is swung) for loading and holding the print medium M in the roll guide 60, and corresponds to FIG. FIG. 18 is a view for explaining the operation of loading / holding the print medium M in the roll guide 60 (after swinging of the retracting operation unit 76), and corresponds to FIG. FIG. 19 is a view for explaining the operation of loading / holding the print medium M in the roll guide 60 (after swinging the retracting operation unit 76), and corresponds to FIG. FIG. 20 is a view for explaining the operation (after locking) for loading and holding the print medium M in the roll guide 60, and corresponds to FIG. FIG. 21 is a diagram for explaining the operation (after locking) for loading and holding the print medium M in the roll guide 60, and corresponds to FIG. FIG. 22 is a diagram illustrating a relationship between the first extending portion 72 and the second extending portion 73 constituting the swing member 70 and the print medium M. FIG. 23 is a view for explaining the operation (after the swinging member 70 swings) for loading and holding the print medium M having a small diameter in the roll guide 60, and corresponds to FIG. FIG. 24 is a diagram showing the operation of the swing member 70 when the printing medium M (sheet) is taken out from the roll guide 60. FIG. 24A shows the printing medium M (sheet) in contact with the inclined surface 751. In FIG. 24B, the inclined surface 751 receives a force from the print medium M (sheet), and the swing member 70 swings in the direction in which the pair of holding pins 78 are close to each other using the wedge effect of the inclined surface 751. FIG. 24C shows a state where the swing member swings in a direction in which the pair of holding pins 78 are separated from each other by the print medium M (sheet) coming into contact with the holding pins 78.

[Overall Structure of Printer 100]
Hereinafter, a printer 100 according to an embodiment of the present invention will be described with reference to the accompanying drawings.

  The printer 100 is of a thermal transfer type that performs printing by heating the ink ribbon R and transferring the ink of the ink ribbon R to the printing medium M. The print medium M is, for example, a label continuum in which a plurality of labels are temporarily attached to a belt-like mount at predetermined intervals, and is wound around a tube P in a roll shape as shown in FIG. It is.

  As shown in FIGS. 1 and 2, the printer 100 includes a housing 10 and a cover 11 that covers an opening of the housing 10.

  As shown in FIG. 2, the print medium M is held by holding pins 78 that have entered the pipe P. A label without a mount can also be used as the printing medium M.

  The cover 11 is supported by a support shaft 13 provided in the housing 10 so that the end on one end side thereof is swingable. The cover 11 can be switched between an open state (see FIG. 3) in which the opening of the housing 10 is opened and a closed state (see FIG. 2) in which it is closed by swinging around the support shaft 13 as a fulcrum. .

  The housing 10 is provided with a lock mechanism (not shown) that maintains the cover 11 in a closed state. The lock mechanism is released by operating the lever 14 shown in FIG.

  A discharge port 16 through which the print medium M printed by the print unit 15 shown in FIG. 2 is discharged from the printer 100 is formed between the end of the cover 11 on the other end side and the housing 10.

  A cutter 17 facing the discharge port 16 is attached to the cover 11. Thereby, the printed print medium M discharged from the discharge port 16 can be cut. Various other units can be attached to the cover 11 instead of the cutter 17.

  A transmission sensor 18 that detects the presence or absence of the print medium M is provided between the discharge port 16 and the print unit 15.

  The transmission sensor 18 is an optical sensor having a light emitting unit 18a that emits predetermined light, and a light receiving unit 18b that receives light emitted from the light emitting unit 18a and outputs an electrical signal corresponding to the intensity of the received light. It is.

  When the print medium M exists between the light emitting unit 18a and the light receiving unit 18b, the light emitted from the light emitting unit 18a is blocked, and the intensity of the light received by the light receiving unit 18b is reduced.

  Thereby, the transmission sensor 18 can detect the presence or absence of the print medium M. The positions of the light emitting unit 18a and the light receiving unit 18b may be interchanged.

  The cover 11 is provided with an operation unit 19 for operating the printer 100. The operation unit 19 includes various operation buttons, a display, a short-range wireless communication module, an LED, and the like. The display may be a touch panel.

  Inside the printer 100, as shown in FIG. 2, a printing unit 30 for printing on the printing medium M, a controller 40 for controlling the operation of the printer 100, and the like are accommodated.

  The printing unit 30 includes a main body 31 that is supported at one end by a support shaft 13 in a swingable manner, and a thermal head 32 that is attached to the main body 31.

  The thermal head 32 constitutes the printing unit 15 that performs printing on the printing medium M together with the platen roller 20 provided on the housing 10 side.

  The printing unit 30 includes a printing position (see FIG. 2) where the printing medium M is sandwiched between the thermal head 32 and the platen roller 20, and a non-printing position where the thermal head 32 is separated from the platen roller 20 (see FIGS. 4)).

  The printing unit 30 also includes a ribbon supply shaft 33 that holds the ink ribbon R supplied to the printing unit 15 in a roll shape, a ribbon take-up shaft 34 that winds up the used ink ribbon R, an ink ribbon R, and printing. A partition member 35 that partitions the medium M, a guide shaft 36 that defines a transport path of the ink ribbon R from the ribbon supply shaft 33 to the printing unit 15, and an ink ribbon R from the printing unit 15 to the ribbon take-up shaft 34. And a guide shaft 37 that defines the conveyance path. The ribbon supply shaft 33 is detachably attached to the partition member 35.

  The printing medium M is supplied to the printing unit 15 from the position held by the holding pins 78 and is sandwiched between the thermal head 32 and the platen roller 20 together with the ink ribbon R.

  When the print medium M and the ink ribbon R are sandwiched between the thermal head 32 and the platen roller 20, that is, when the print unit 30 is in the print position, the heating element of the thermal head 32 is energized. The ink on the ink ribbon R is transferred to the print medium M by the heat of the heating element, and printing on the print medium M is performed.

  When the platen roller 20 is rotated forward by a platen drive motor (not shown), the printing medium M and the ink ribbon R are conveyed downstream in the conveying direction, and the printing medium M is discharged from the discharge port 16 to the outside of the printer 100. Discharged.

  The ribbon supply shaft 33 and the ribbon take-up shaft 34 are also driven to rotate by drive motors (not shown).

  The partition member 35 includes a base portion 35a, a shaft portion 35b provided on one end side of the base portion 35a, a support portion 35d that supports the ribbon supply shaft 33 in a manner to be rotatable in parallel with the shaft portion 35b, and a shaft portion 35b. And an engaging portion 35e formed at the center portion.

  The partition member 35 is swingably supported by the main body portion 31 by the shaft portion 35b.

  As shown in FIG. 2, the engaging portion 35 e is configured to engage with an engaged portion 11 a provided on the cover 11. When the partition member 35 is brought into a position (closed position) where the engaging portion 35e engages with the engaged portion 11a, the ribbon supply shaft 33 is accommodated in the main body portion 31. As a result, the ribbon supply shaft 33 becomes a ribbon supply position for supplying the ink ribbon R to the printing unit 15.

  Thus, the partition member 35 is maintained in the closed position where the ribbon supply shaft 33 becomes the ribbon supply position by the engagement of the engaging portion 35e and the engaged portion 11a. Further, the printing unit 30 and the cover 11 are combined.

  When printing is performed by the printer 100, the cover 11 is in a closed state, and the engaging portion 35e of the partition member 35 and the engaged portion 11a of the cover 11 are engaged.

  Therefore, when the cover 11 is changed from the closed state to the open state, the print unit 30 swings integrally with the cover 11 and the opening of the housing 10 is opened as shown in FIG.

  Thereby, the setting of the printing medium M to the printer 100 and the maintenance of each part in the housing 10 can be performed.

  Further, when the engagement between the engaging portion 35e and the engaged portion 11a is released from the state shown in FIG. 3 and the partition member 35 is swung toward the housing 10, the partition member 35 is shown in FIG. Open position.

  As the partition member 35 is moved to the open position, the ribbon supply shaft 33 and the roll-shaped ink ribbon R held on the ribbon supply shaft 33 move relative to the ribbon take-up shaft 34, and the print medium M It is exposed to the discharge port 16 side (FIG. 2).

  As a result, the ribbon supply shaft 33 becomes a ribbon replacement position that can be detached from the printer 100, and the ink ribbon R can be replaced.

  Engagement between the engaging portion 35e and the engaged portion 11a is achieved by elastically deforming the engaging portion 35e and the engaged portion 11a when the partition member 35 is swung toward the housing 10 with a torque equal to or greater than a predetermined torque. Is released.

  Note that, by releasing the engagement between the engaging portion 35e and the engaged portion 11a, the printing unit 30 itself swings to a predetermined position toward the housing 10 side. The predetermined position is a position where the swing restricting portion (not shown) provided in the vicinity of the support shaft 13 in the housing 10 and the main body portion 31 abut.

  The positioning of the printing unit 30 by the swing restricting portion is such that when the print unit 30 is swung to the housing 10 side with a torque equal to or greater than a predetermined torque, the swing restricting portion is elastically deformed and the main body portion 31 moves the swing restricting portion. Get over and release.

  Further, as shown in FIG. 2, a conveyance guide portion 35 f is provided on the other end side of the base portion 35 a in the partition member 35. As shown in FIG. 2, the conveyance guide portion 35 f forms a conveyance path for the print medium M between the reflection sensor 21 and the reflection sensor 21 when the printing unit 30 is in the printing position.

  The reflection sensor 21 includes a light emitting unit that emits predetermined light, a light receiving unit that receives reflected light from the print medium M of light emitted from the light emitting unit, and outputs an electrical signal corresponding to the intensity of the received light. Are optical sensors.

  The reflection sensor 21 detects an eye mark printed in advance at a predetermined interval on the surface opposite to the surface on which the printing of the printing medium M is performed.

  Thereby, the reflection sensor 21 can detect the position of the print medium M in the transport direction.

  Here, if slack or undulation occurs in the printing medium M being conveyed, the distance between the reflection sensor 21 and the printing medium M may increase, and the detection accuracy of the reflection sensor 21 may decrease.

  On the other hand, in the present embodiment, when the printing unit 30 is in the printing position, that is, in the state shown in FIG. 2, the conveyance guide portion 35 f of the partition member 35 forms a conveyance path between the reflection sensor 21. Therefore, the print medium M is guided by the conveyance guide portion 35f, and the print medium M is conveyed within a certain distance from the reflection sensor 21. Therefore, it is possible to prevent the distance between the reflection sensor 21 and the printing medium M from increasing due to slack or undulation of the printing medium M, and the detection accuracy of the reflection sensor 21 can be stabilized.

  Further, since the conveyance path of the print medium M is formed by the conveyance guide portion 35f provided in the partition member 35, it is necessary to separately provide a member for conveying the print medium M within a certain distance from the reflection sensor 21. There is no need to insert the print medium M into the member.

  Moreover, since the partition member 35 is provided in the printing unit 30, when the printing unit 30 is set to the non-printing position, the entire conveyance path of the printing medium M can be exposed. Therefore, even if the printing medium M is conveyed within a certain distance from the reflection sensor 21 by providing the conveyance guide portion 35f on the partition member 35, the work of setting the printing medium M in the printer 100 can be easily performed. Can do.

  As shown in FIG. 2, the printer 100 includes a transmission sensor 22 that detects the position of the print medium M in the transport direction.

  The transmission sensor 22 receives a light emitting unit 22a as a light emitting unit that emits predetermined light and a light receiving unit that receives the light emitted from the light emitting unit 22a and outputs an electrical signal corresponding to the intensity of the received light. And an optical sensor having a unit 22b.

  For example, when the printing medium M is a continuous label body in which a plurality of labels are temporarily attached to a belt-like mount at a predetermined interval, there is only a portion of the mount between two adjacent labels. To do.

  Since the transmission amount of the light emitted from the light emitting unit 22a is different between the portion where the label is present and the portion of the mount alone, the intensity of the light received by the light receiving unit 22b changes. Thereby, the reflection sensor 21 can detect the position of the print medium M in the transport direction.

  In the present embodiment, as shown in FIG. 2, the light emitting unit 22a is provided on the opposite side of the conveyance guide portion 35f from the conveyance path of the print medium M, that is, on the upper surface side of the conveyance guide portion 35f. In addition, a through hole 35g through which light emitted from the light emitting unit 22a passes is formed in the transport guide portion 35f. On the other hand, as shown in FIG. 2, the light receiving unit 22b is provided on the housing 10 side with the conveyance path interposed therebetween.

  As described above, the operation of setting the printing medium M in the printer 100 is performed in a state where the printing unit 30 is set to the non-printing position and the opening of the housing 10 is opened.

  That is, in the present embodiment, the print medium M can be set in the printer 100 with a large gap between the light emitting unit 22a and the light receiving unit 22b. Therefore, the work of setting the print medium M in the printer 100 can be easily performed. Can do. The positions of the light emitting unit 22a and the light receiving unit 22b may be interchanged.

  The printer 100 detects the position of the print medium M in the transport direction by operating either the reflection sensor 21 or the transmission sensor 22 according to the form of the print medium M to be used.

  For example, when using the printing medium M without the eye mark, the printer 100 detects the position of the printing medium M by the transmission sensor 22.

  The controller 40 includes a microprocessor, a storage device such as a ROM and a RAM, an input / output interface, and a bus for connecting them. Print data from an external computer, signals from the transmission sensors 18 and 22, signals from the reflection sensor 21, and the like are input to the controller 40 via an input / output interface.

  The controller 40 executes a print control program stored in the storage device by a microprocessor, and controls energization to the heating elements of the thermal head 32, energization to each drive motor, and the like.

[Configuration of Roll Guide 60]
FIG. 5 is a perspective view of the printer 100 according to the embodiment of the present invention in an open state. FIG. 6 is a plan view of the printer 100 and the roll guide 60 constituting the printer 100 according to the embodiment of the present invention. FIG. 7 is a cross-sectional view showing a roll guide 60 constituting the printer 100 according to the embodiment of the present invention.

  As shown in FIG. 5, the roll guide 60 is disposed in a roll storage recess 101 formed in the housing 10 and opening upward.

  The roll guide 60 includes a pair of support members 65 (65A, 65B) into which the print medium M is inserted in the bottom direction (insertion direction) along the radial direction from above (FIG. 7).

  The support members 65 (65A, 65B) are arranged at intervals in a direction (hereinafter referred to as a width direction) orthogonal to the feeding direction (substantially horizontal direction) of the print medium M at the bottom of the roll housing recess 101.

  As shown in FIG. 6, the support members 65 </ b> A and 65 </ b> B are slidable in the width direction along the guide grooves 63 arranged so as to extend in the width direction in the roll housing recess 101.

  Racks 61A and 61B extending in the width direction are respectively attached to the support members 65A and 65B, and the rack 61A and the rack 61B are arranged so as to be shifted from each other in the substantially horizontal direction.

  A pinion 62 is sandwiched between the rack 61A and the rack 61B, and the rack 61A and the rack 61B are mechanically coupled via the pinion 62.

  The pair of support members 65A and 65B can slide in the width direction so as to be separated from each other or approach each other by rotating the pinion 62, and the sliding amounts are the same.

  The support member 65A is provided with a locking mechanism for locking the support member 65A at an arbitrary position along the guide groove 63 described above.

  This locking mechanism includes a large number of sawtooth-shaped locking grooves 641 formed in parallel with the guide grooves 63 at positions facing the side surfaces of the support member 65 on the inner wall surface of the roll housing recess 101, and the support member 65A. The stopper 642 is attached to a portion facing the locking groove 641 and can be engaged with and disengaged from the locking groove 641 by operating the operation portion 643 in the feeding direction of the print medium M.

  By engaging the stopper 642 with the locking groove 641, the sliding of the support member 65A and the rack 61A is prohibited, and the rotation of the pinion 62 by the rack 61A is prohibited, whereby the sliding of the rack 61B and the support member 65B. Is also prohibited.

  Further, by pulling out the stopper 642 from the locking groove 641, the sliding of the support member 65A and the rack 61A is allowed, whereby the rotation of the pinion 62 is allowed and the sliding of the rack 61B and the support member 65B is also allowed.

  As shown in FIGS. 6 and 7, the roll guide 60 includes a pair of support members 65 and a holding pin 78 that rotatably holds the print medium M and is swingably attached to the support member 65. The member 70 is included.

  The support member 65 is provided with a swing shaft 652 (see FIG. 7) extending in a direction (substantially horizontal direction) substantially perpendicular to the width direction and the vertical direction of the printer 100 (the direction in which the printing medium M is put in and out).

  The swing member 70 is swingably attached to the support member 65 via a swing shaft 652. The swing member 70 is attached to the support member 65 such that its main surface (front surface) faces a holding region (a region where the print medium M is loaded and held in the roll storage recess 101).

  The swing member 70 is a plate-like member having an outer shape in a direction parallel to the swing shaft 652 (hereinafter referred to as a swing shaft direction) and a direction perpendicular thereto (hereinafter referred to as a swing radius direction). It is connected to the swing shaft 652 at the center in the kinetic radius direction, and swings like a seesaw about the swing shaft 652 (swing shaft direction).

  Here, the oscillating radius direction is a direction perpendicular to the oscillating axis direction and along the axis that rotates about the oscillating axis 652, and by rotating about the oscillating axis 652. It may be parallel to the vertical direction (the direction in which the printing medium M is put in and out), or may cross (tilt) the vertical direction.

  A holding pin 78 is disposed at a position above the swing shaft 652 of the swing member 70 (on the side in which the print medium M is taken out).

  A first urging spring 791 (first urging means) is attached at a position below the oscillating shaft 652 of the oscillating member 70 (on the side in which the print medium M is inserted).

  The first urging spring 791 urges the portion of the oscillating member 70 that is below the oscillating shaft 652 in the direction of pushing the print medium M toward the holding area (roll housing recess 101).

  As a result, the pair of swing members 70 is in a state (initial state) in which the pair of holding pins 78 swings in a direction away from each other by the first biasing spring 791.

  Here, the holding pin 78 is designed so that the holding pin 78 does not protrude from the surface of the support member 65 (the surface facing the holding region) in the initial state (see FIG. 7).

  On the other hand, when the swing member 70 is swung in the direction in which the first urging spring 791 is compressed, the surface of the swing member 70 (the surface on the holding region side) is such that the holding pin 78 extends from the surface of the support member 65 to the holding region. It will be in the state which protruded to the side (refer FIG. 6, 2nd rocking | fluctuation state mentioned later).

  As will be described later, in the present embodiment, the holding pin 78 swings the swing member 70 in consideration of the case where the tip of the holding pin 78 abuts against the end surface of the print medium M when the holding pin 78 protrudes toward the holding region. The holding pin 78 is retracted in a direction that does not protrude from the surface of the swing member 70 so as to avoid interference (see a first swing state described later, see FIGS. 16 and 17).

  Further, in this configuration, when the holding pin 78 is opposed to the inside of the tube material P of the print medium M, an operation of protruding from the swing member 70 and entering the tube material P is possible (second swing state described later, FIG. 18). FIG. 19).

  FIG. 8 is a schematic view of the support member 65 and the swinging member 70 that constitute the roll guide 60, as viewed in the direction of arrows VIII in FIGS. 6 and 7. 9 is a cross-sectional view taken along line IX-IX in FIG. 10 is a cross-sectional view taken along line XX of FIG.

  FIG. 11 is a perspective view of the support member 65 constituting the roll guide 60. FIG. 12 is a perspective view of the swing member 70 (arm portion 71) constituting the roll guide 60. FIG. 13 is a rear view of FIG. FIG. 14 is a perspective view of the swing member 70 (retracting operation unit 76) constituting the roll guide 60. FIG.

  As shown in FIG. 8, the swinging member 70 is arranged so as to be unevenly distributed on the upper portion of the support member 65 (the portion of the support member 65 on the print medium M take-out direction side).

  The swing member 70 is designed so that its length in the swing radius direction (substantially vertical direction in FIG. 8) is shorter than the length of the support member 65 in the height direction.

  The dimension of the swing member 70 is designed so that the length in the swing axis direction is longer than the length of the swing member 70 in the swing radius direction.

  On the upper part of the support member 65, an accommodation portion 651 having a shape following the outer shape of the oscillation member 70 and capable of accommodating the oscillation member 70 in the support member 65 is formed. Further, swing shafts 652 (see FIG. 11) are provided on both side surfaces in the accommodating portion 651.

  As shown in FIG. 8 (refer to FIGS. 12 and 13 for details), the swing member 70 is swingably supported by a support member 65 via a swing shaft 652 and also has a retraction operation unit 76 described later. (FIG. 14) an arm portion 71 (oscillating member main body) that is supported so as to sandwich it, a first extending portion 72 that extends from the left and right side surfaces of the arm portion 71 in a substantially oscillating axis direction, and a first extending portion. A second extending portion 73 extending from the tip of 72 in the oscillating radius direction (substantially downward), a fitting portion 74 and a shielding portion 75 extending substantially downward from the lower portion of the arm portion 71, and Are integrally formed.

  The arm portion 71, the first extension portion 72, the second extension portion 73, and the shielding portion 75 form the same plane on each holding region side surface.

  The arm portion 71 has a main surface (front surface) facing the holding region and facing or contacting the print medium M. Further, a bearing portion 711 (see FIG. 13) is attached to the back surface of the bearing portion 711 (see FIG. 13). .

  The bearing portion 711 has a groove shape that extends in the oscillating radius direction and has an opening for introducing the oscillating shaft 652 at the upper end (end on the positive oscillating radius direction side). By sliding in the groove, the entire arm portion 71 can be slid in the swing radius direction (substantially up and down direction).

  As shown in FIGS. 9 and 10, the first biasing spring 791 has a longitudinal direction substantially in the width direction, one end in the longitudinal direction is attached to the support member 65 (accommodating portion 651), and the other end is a bearing of the arm portion 71. It is attached (or abuts) at a position below the portion 711.

  The arm portion 71 has two arms, and a retracting operation portion 76 is disposed between the two arms (see FIG. 8). The retreat operation unit 76 is a member whose longitudinal direction is the rocking radial direction of the rocking member 70 in the initial state.

  As shown in FIG. 9, the surface of the arm that faces the retraction operation unit 76 extends downward toward the back side of the swinging member 70, curves downward, faces the front side of the arm unit 71, and is close to the front side of the arm unit 71. A rocking fulcrum 712 having a tip at a position is arranged.

  A U-shaped fulcrum receiving portion 761 is disposed at a position below the retracting operation portion 76 and corresponding to the swing fulcrum 712.

  The swinging fulcrum 712 and the fulcrum receiving part 761 are engaged with each other in such a manner that the tip (lower end) of the swinging fulcrum 712 enters the inside of the fulcrum receiving part 761 and comes into contact with the bottom surface thereof.

  The retraction operation unit 76 can swing (rotate) with respect to the arm unit 71 around the tip of the swing fulcrum 712 and with a direction substantially parallel to the swing shaft 652 as an axis (see FIG. 16).

  As shown in FIGS. 9 and 10, a second urging spring 792 (second urging means) is attached between the arm portion 71 and the retracting operation portion 76 in the oscillating radial direction.

  In the initial state, the second urging spring 792 has the oscillating radial direction as the longitudinal direction, one end in the longitudinal direction is in contact with the arm portion 71, and the other end is in contact with the retracting operation portion 76.

  The second urging spring 792 is disposed at a position displaced from the tip of the oscillating fulcrum 712 toward the back side of the oscillating member 70 by a predetermined distance.

  The second urging spring 792 is applied (applied) with a compressive stress by the arm portion 71 and the retracting operation portion 76.

  With the arrangement described above, the second urging spring 792 causes the retraction operation unit 76 to swing relative to the holding region side with respect to the arm unit 71 around the contact position of the fulcrum receiving unit 761 with the swinging fulcrum 712. An urging force is applied to the retreat operation unit 76.

  The arm unit 71 includes a stopper 713 that contacts the retraction operation unit 76 when the retraction operation unit 76 reaches a predetermined swing position.

  The stopper 713 is designed so that the surface of the retracting operation portion 76 (excluding the holding pin 78) contacts the retracting operation portion 76 at a position where the surface of the retracting operation portion 76 forms substantially the same plane as the surface of the arm portion 71. The arm portion 71 is disposed so as to protrude from the surface.

  In this embodiment, three stoppers 713 are arranged (see FIG. 12).

  With the above configuration, the retracting operation unit 76 basically swings around the swinging shaft 652 integrally with the arm unit 71.

  However, as will be described later, when the tip of the holding pin 78 provided in the retracting operation unit 76 comes into contact with the end surface of the print medium M, the retracting operation unit 76 uses the reaction force when contacting the print medium M to swing. The holding pin 78 swings relatively in the direction not protruding from the arm portion 71 around the tip of the moving fulcrum 712 (see FIGS. 16 and 17).

  The first extending portion 72 (see FIGS. 8, 12, and 13) is a portion that extends from the arm portion 71 in both directions in the swing axis direction.

  A distal end of the first extension portion 72 includes a second extension portion 73 that extends to the lower side of the swing member 70 (the side protruding to the holding region side by the first biasing spring 791).

  FIG. 22 is a diagram illustrating a relationship between the first extending portion 72 and the second extending portion 73 constituting the swing member 70 and the print medium M.

  As shown in FIG. 22 and the like, the length of the line connecting the tips of the two first extending portions 72, that is, the length of the swinging member 70 in the swinging axis direction is the length of the swinging member 70 (arm portion 71). It is preferable to design longer than the length in the oscillating radial direction.

  When the swinging member 70 is in contact with the printing medium M loaded, the second extending portion 73 has a tip end that is below the extension line of the swinging shaft 652 (on the negative swinging radial direction side). And a position where the print medium M contacts with the second biasing spring 792.

  Thereby, the inner diameter of the tube material P of the print medium M is longer than the length of the arm portion 71 in the rocking radial direction, and the entire arm portion 71 is disposed inside the tube material P when viewed from the width direction. In addition, the end portion of the first extending portion 72 in the swing axis direction and the second extending portion 73 are in contact with the print medium M.

  Further, since the second extending portion 73 is in contact with the print medium M in a state of being disposed at a position separated from the extension line of the swing shaft 652, it can receive a certain moment from the print medium M as a drag force.

  As a result, the arm portion 71 is idled by the first urging spring 791, that is, the swinging member 70 is prohibited from returning to the initial state, and the state where the holding pin 78 enters the pipe P can be maintained.

  In the present embodiment, the swing member 70 has a shape in which the first extending portion 72 and the second extending portion 73 extend from the arm portion 71, but the arm portion 71, the first extending portion 72 and a substantially rectangular shape including the outer diameter of the second extending portion 73.

  However, since the shape of this embodiment can reduce the weight of the rocking member 70 compared to the case of the substantially rectangular shape, the rocking member 70 is rocked by the first biasing spring 791 when the print medium M is removed. The movement is facilitated, and accordingly, the first biasing spring 791 can be reduced in size.

  As shown in FIGS. 9 and 10, the lower portion of the holding pin 78 forms an inclined surface 781 in which the thickness of the holding pin 78 in the rocking radial direction increases toward the base of the holding pin 78.

  In the initial state (see FIG. 7), the holding pin 78 is configured such that the inclined surface 781 of the holding pin 78 and the surface of the support member 65 (surface on the holding region side) are substantially flush with each other. Designed not to protrude from the surface.

  The holding pin 78 is formed with an inclined surface 782 having a smaller inclination angle than the inclined surface 781 in the vicinity of the root.

  In the state where the holding pin 78 holds the print medium M, the inclined surface 782 is inclined so as to approach the pipe P of the print medium M toward the root of the holding pin 78 (see FIGS. 18 and 19).

  With the above configuration, when the print medium M is taken out, the holding pin 78 is prevented from being caught by the tube material P of the print medium M, and the holding pin 78 (the swing member 70) can be easily swung, whereby the print medium M can be easily removed. It can be easily taken out.

  As shown in FIG. 10, the fitting portion 74 is a portion that is formed thinner than the thickness of the arm portion 71 and protrudes from the lower surface of the arm portion 71, and is fitted to the fitting portion 653 formed at the lower portion of the housing portion 651. By fitting, the swinging of the arm portion 71 is prohibited (see FIG. 21).

  Here, for example, a concave portion 74a is formed on the surface of the fitting portion 74 facing the fitting portion 653, and a convex portion 653a is formed on the surface of the fitting portion 653 facing the fitting portion 74, for example, and the concave portion 74a. Is fitted into the convex portion 653a, so that the fitted portion 74 is fitted into the fitted portion 653. As will be described later, the concave portion 74a and the convex portion 653a can be omitted as shown in a broken-line circle in FIG.

  As shown in FIG. 10, the fitting portion 74 may protrude from the surface of the support member 65 in the initial state of the swing member 70.

  At this time, when the print medium M is taken out from the roll guide 60, the print medium M (sheet) in which a part of the print medium M (roll) is bent and hangs down may come into contact with the fitting portion 74.

  At this time, the print medium M (sheet) is swung in a direction in which the fitting portion 74 is further protruded toward the holding area, and the removal of the print medium M becomes complicated, and the print medium M is forcibly removed. The print medium M (sheet) may be damaged.

  Therefore, the arm portion 71 is provided with a shielding portion 75 (FIGS. 9 and 10) adjacent to the fitting portion 74.

  The shielding part 75 is formed in a pair so as to sandwich the fitting part 74 (see FIGS. 12 and 13), and its outer shape is formed so that the outer shape of the fitting part 74 is arranged on the inner side when viewed from the swing axis direction. (See FIGS. 9, 10, and 15).

  The shielding portion 75 (the swing member 70) has a portion that protrudes from the support member 65 to the holding region when the swing member 70 is in the initial state, and the portion is directed to the direction in which the print medium M is taken out. Accordingly, an inclined surface 751 that forms an outer shape protruding from the support member 65 toward the holding region is provided.

  Thereby, when the printing medium M is taken out from the roll guide 60, even if the fitting portion 74 (the swing member 70) protrudes from the surface of the support member 65, a part of the printing medium M (roll) is bent. The printing medium M (sheet) that hangs down is bent in the width direction, so that the printing medium M (sheet) slides away on the inclined surface 751 without being caught by the fitting portion 74.

  Therefore, the print medium M (sheet) can be prevented from being caught when the print medium M is taken out.

  As shown in FIGS. 9 and 10, the outer shape of the end portion in the insertion direction of the print medium M of the inclined surface 751 that forms a part of the outer shape of the shielding portion 75 (the rocking member 70) when viewed from the rocking axis direction 9 and FIG. 10 is arranged inside the outer shape of the support member 65 regardless of the state of the swing member 70. That is, it is designed not to protrude from the surface of the support member 65 even in the initial state.

  As a result, a part of the print medium M (roll) is bent and hangs down in the same manner as described above, so that the shielding part 75 (the swing member 70) is held on the holding region side by contacting the lower end of the inclined surface 751. Can be prevented from swinging in the protruding direction, and the print medium M (sheet) can be prevented from being caught when the print medium M is taken out.

  15 is a view corresponding to the right side view of FIG. 12 and the left side view of FIG. 13, and is a view when the second extending portion 73 is extended from the form shown in FIGS. 12 and 13. . As shown in FIG. 15, the second extending portion 73 has a range in which the outer shape can be disposed inside the outer shape of the shielding portion 75 when viewed from the swing axis direction of the swing shaft 652 (for example, the broken line in FIG. 12. Can be extended to the position indicated by the arrow.

  As a result, the second extending portion 73 urged by the second urging spring 792 reliably receives a drag force from the print medium M after being loaded in the roll guide 60, so that the second urging spring 792 of the arm portion 71 is received. The holding of the print medium M by the holding pin 78 can be maintained while avoiding the swinging caused by the above.

  Furthermore, when the print medium M is taken out, it is possible to prevent the print medium M (sheet) from which a part of the print medium M (roll) is bent and hangs down from being caught by the second extending portion 73.

  As described above, the swing member 70 (arm portion 71, retreat operation portion 76) is attached so that the bearing portion 711 can slide with respect to the swing shaft 652 in the swing radius direction. It is slidable with respect to the support member 65 according to the sliding direction (substantially vertical direction) 711.

  Therefore, the upper portion of the holding pin 78 abuts against the tube material P of the print medium M and receives the load, so that the swing member 70 slides (moves) downward by a predetermined distance. At that time, the fitting portion 74 is in a state of being fitted into the fitted portion 653 (locked state) (see FIG. 21).

  As shown in FIGS. 9 and 10, the distal end region of the retracting operation portion 76 has a head portion 771 and a constricted portion 772, and the tip of the constricted portion 772 is a head portion 771.

  On the other hand, as shown in FIG. 10, the accommodating portion 651 has a form capable of accommodating the head portion 771 and the constricted portion 772, and a locking portion 654 is provided at a position for accommodating the head portion 771 and the constricted portion 772. Yes.

  As shown in FIG. 14, a pair of locking portions 654 are provided side by side in the swing axis direction, and when the retracting operation portion 76 (the swing member 70) swings, the constricted portion 772 has a pair of locking portions. 654 so as to pass between 654.

  Further, the head portion 771 is formed wider than the distance between the pair of constricted portions 772 and abuts on the engaging portion 654 in the locked state (or the engaging portion when the retracting operation portion 76 swings). Swaying of the retraction operation unit 76 (swinging member 70) is prohibited.

[Operation of Roll Guide 60 (Part 1)]
FIG. 16 is a view for explaining an operation (after the arm portion 71 is swung) for loading and holding the print medium M in the roll guide 60, and corresponds to FIG.

  FIG. 17 is a view for explaining the operation (after the arm portion 71 is swung) for loading and holding the print medium M in the roll guide 60, and corresponds to FIG.

  FIG. 18 is a view for explaining the operation of loading / holding the print medium M in the roll guide 60 (after swinging of the retracting operation unit 76), and corresponds to FIG.

  FIG. 19 is a view for explaining the operation of loading / holding the print medium M in the roll guide 60 (after swinging the retracting operation unit 76), and corresponds to FIG.

  FIG. 20 is a view for explaining the operation (after locking) for loading and holding the print medium M in the roll guide 60, and corresponds to FIG.

  FIG. 21 is a diagram for explaining the operation (after locking) for loading and holding the print medium M in the roll guide 60, and corresponds to FIG.

  The operation of the roll guide 60 constituting the printer 100 of this embodiment will be described.

  Before the printing medium M is loaded, the roll guide 60 is urged by a first urging spring 791 as an initial state, and the pair of swing members 70 are arranged in a direction in which the holding pins 78 are separated from each other (see FIG. 7, FIG. 9 and FIG. 10).

  As shown in FIGS. 16 and 17, when the printing medium M starts to be inserted into the roll guide 60, the printing medium M comes into contact with the swing member 70 (arm portion 71), and the holding pins 78 approach each other. Then, the swing member 70 swings (see FIG. 7), and the tip of the holding pin 78 comes into contact with the end of the print medium M.

  However, the retracting operation portion 76 that supports the holding pin 78 swings relative to the arm portion 71, so that the arm portion 71 continues to swing in a state where the swinging of the retracting operation portion 76 is stopped. The surface of the part 71 and the surface of the support member 65 form substantially the same plane (first swing state).

  As shown in FIGS. 18 and 19, when the insertion of the printing medium M is advanced and the holding pin 78 is opposed to the pipe P of the printing medium M, the holding pin 78 is moved into the pipe P by the second biasing spring 792. The swinging is performed by the swinging portion 772 passing between the pair of locking portions 654, and the swinging is stopped by contacting the stopper 713 (second swinging state).

  As shown in FIGS. 20 and 21, when the upper portion of the holding pin 78 comes into contact with the inner wall surface on the upper side of the tube material P and the holding pin 78 receives a load from the print medium M, the swing member 70 including the holding pin 78 is The fitting portion 74 (recessed portion 74 a) that slides downward and is disposed in the arm portion 71 is fitted into the fitted portion 653 (convex portion 653 a) formed in the housing portion 651, and the swinging of the arm portion 71 is prohibited. Is done.

  Note that there is an inclined surface 741 inclined toward the holding region at the lower portion (end portion on the negative oscillation radius side) of the fitting portion 74, and an inclination inclined toward the back surface side of the oscillation member 70 at the lower portion of the accommodating portion 651. There is a surface 655.

  When the swing member 70 slides downward, the inclined surface 741 and the inclined surface 655 come into contact with each other (see FIG. 19), and the fitting portion 74 is guided by the inclined surface 741 to the fitted portion 653 below the inclined surface 655. It has come to be.

  Therefore, even if the swinging member 70 swings insufficiently in the second swinging state, the fitting portion 74 (concave portion 74a) can be securely fitted into the fitting portion 653 (convex portion 653a).

  In FIG. 17 (first swing state) and FIG. 19 (second swing state), the inclined surface 741 is in contact with the inclined surface 655, but it may be located at a position spaced upward from the inclined surface 655. Good.

  When the fitting portion 74 is fitted into the fitted portion 653, the head portion 771 of the retracting operation portion 76 is accommodated in the accommodating portion 651 and retracted by facing and abutting against the locking portion 654 formed in the accommodating portion 651. The swinging of the operating unit 76 is prohibited (locked state).

  Thus, the loading of the printing medium M into the roll guide 60 is completed, and the printing medium M is rotatably held by the holding pins 78.

  Here, the retracting operation unit 76 receives an urging force from the second urging spring 792 in the direction of swinging toward the holding region even in the locked state. Therefore, when the holding pin 78 can stably enter the pipe P by the urging force from the second urging spring 792 and the holding of the print medium M can be maintained, the locking portion 654 (in the broken line circle in FIG. 11). Can be omitted. In this case, since the support member 65 can be easily designed, the cost can be suppressed.

  Of course, by applying the locking portion 654, the swinging of the retracting operation portion 76 can be reliably prohibited in the locked state.

  Further, as shown in FIG. 21 and the like, as long as the fitting portion 74 abuts on the fitting portion 653, the swinging member 70 (arm portion 71) is prohibited from swinging. In the locked state, the load of the printing medium M is applied to the holding pin 78 (swing member 70), and the swing member 70 (arm portion 71) does not lift. Therefore, the recessed part 74a of the fitting part 74 and the convex part 653a of the to-be-fit part 653 can be omitted (see the drawings in the broken line circles in FIGS. 10, 17, 19, and 21).

  Thereby, when the swing member 70 shifts from the second swing state to the locked state, the facing surface of the fitting portion 74 to the fitted portion 653 is opposed to the facing surface of the fitted portion 653 to the fitted portion 74. Therefore, the transition from the second swing state to the locked state (or the reverse transition) can be performed smoothly.

  Further, the head 771 protrudes upward from the support member 65 in the second swinging state (see FIG. 19), but when it is in the locked state (see FIG. 21), the accommodating portion 651 (the support member 65). ).

  Thereby, the user confirms that the swing of the arm portion 71 and the retracting operation portion 76 is locked depending on whether or not the head portion 771 is accommodated in the accommodating portion 651 and the print medium M is held by the holding pin 78. be able to.

  Conversely, when the print medium M is taken out from the roll guide 60, the lower inner wall surface of the pipe P of the print medium M abuts on the inclined surface 782 of the holding pin 78 (see FIGS. 18 and 19), and the print medium M is When the holding pin 78 is lifted, the swinging member 70 slides upward. At this time, the head 771 protrudes from the upper part of the support member 65.

  When the head portion 771 is higher than the locking portion 654, the retracting operation portion 76 can swing with respect to the arm portion 71. At the same time, the fitting of the fitting portion 74 is also released, and the arm portion 71 becomes swingable. The arm portion 71 swings by the biasing force of the first biasing spring 791 and comes into contact with the print medium M (second swing state). ).

  Thereafter, as the printing medium M is pulled up, the rocking member 70 is swung by the first biasing spring 791 and the holding pin 78 does not protrude from the surface of the support member 65, so that the printing medium M is removed from the roll guide 60. It can be easily taken out.

  When the printing medium M is taken out, the swing member 70 returns to the initial state.

  In the second swing state, the user may take out the print medium M from the roll guide 60 by swinging the head 771 to the back side of the support member 65 and pulling the holding pin 78 into the storage portion 651. it can.

  In the present embodiment, the holding pin 78 does not protrude from the support member 65 to the holding area of the print medium M as soon as the swinging member 70 swings when the print medium M is loaded, but instead of the tube P of the print medium M. It operates so as to enter the pipe P for the first time at the stage facing the inside.

  Further, the swing member 70 is unevenly arranged on the upper end side of the support member 65, and a space (holding area) for holding the print medium M is secured below the swing member 70 (FIG. 7, see FIG.

  Therefore, in the present embodiment, even when the diameter of the print medium M is considerably larger than the length of the rocking member 70 (arm portion 71) in the rocking radial direction, the print medium M is reliably loaded and held. be able to.

  Further, the length of the swing member 70 (arm portion 71) in the swing radius direction is preferably designed to be shorter (for example, half or less) than the length of the support member 65 in the vertical direction.

  As a result, the distance between the contact position of the swing member 70 with the print medium M and the holding pin 78 can be shortened, and the print medium M with the small inner diameter of the tube material P can be reliably loaded and held.

[Operation of Roll Guide 60 (Part 2)]
FIG. 23 is a view for explaining the operation (after the swinging member 70 swings) for loading and holding the print medium M having a small diameter in the roll guide 60, and corresponds to FIG.

  Here, the operation when the print medium M (sheet) remains little and the holding pin 78 faces the tube P of the print medium M when the print medium M comes into contact with the swing member 70 (arm portion 71) will be described. To do.

  As shown in FIG. 23, when the print medium M comes into contact with the arm portion 71, the holding pin 78 faces the inside of the pipe material P. Therefore, the retracting operation portion 76 swings together with the arm portion 71, and the holding pin 78 remains as it is. Get inside P. Thereafter, the same operation as that shown in FIGS. 20 and 21 is performed.

  Further, when the print medium M is taken out, the arm portion 71 is allowed to swing by the fitting portion 74 and the retracting operation portion 76 is allowed to swing by the locking portion 654, and the arm portion 71 is immediately separated from the print medium M. Therefore, the arm portion 71 and the retracting operation portion 76 are swung by the first biasing spring 791 and return to the initial state.

  Therefore, in the present embodiment, even when the print medium M is in a state where the print medium M (sheet) is remaining, it can be reliably loaded and held.

  In the arrangement of the rocking member 70 and the rocking shaft 652 in the initial state, for example, the rocking member 70 is arranged at a position where the center of gravity in the rocking radial direction is higher than the rocking shaft 652. When the upper portion of the spring is designed to swing in a direction away from the holding region due to gravity and the pair of holding pins 78 swing away from each other, the first biasing spring 791 (first biasing means) ) Can be omitted.

  Further, for example, when the printing medium M is loaded, the swinging member 70 is easily swung in the direction in which the pair of holding pins 78 approach each other by contacting (pressing) the lower portion of the swinging member 70, and the printing medium M When the pipe member P of the print medium M abuts (presses) the holding pin 78 (inclined surface 781) when taking out the swinging member 70, the swinging member 70 easily swings in the direction in which the pair of holding pins 78 are separated from each other. The first urging spring 791 (first urging means) can be omitted.

  FIG. 24 is a diagram showing the operation of the swing member 70 when the printing medium M (sheet) is taken out from the roll guide 60. FIG. 24A shows the printing medium M (sheet) in contact with the inclined surface 751. In FIG. 24B, the inclined surface 751 receives a force from the print medium M (sheet), and the swing member 70 swings in the direction in which the pair of holding pins 78 are close to each other using the wedge effect of the inclined surface 751. FIG. 24C shows a state where the swing member 70 swings in a direction in which the pair of holding pins 78 are separated from each other due to the print medium M (sheet) coming into contact with the holding pins 78.

  When the first urging spring 791 is omitted, or when the urging force of the first urging spring 791 is small, the print medium M is taken out from the roll guide 60, and a part of the print medium M (roll) is bent. The operation of the swing member 70 when there is a print medium M (sheet) that hangs down will be described.

  In this case, when the printing medium M (roll) (see FIG. 7) is pulled up, the swing member 70 first swings in the direction in which the pair of holding pins 78 are separated from each other, and the inclined surface 751 of the swing member 70 is the support member. It protrudes from 65 to the holding area side.

  At this time, as shown in FIG. 24A, the lower end of the swinging member 70 (inclined surface 751) (the broken line portion in FIG. 24A) is disposed inside the support member 65 when viewed from the swinging axis direction. Thus, the surface of the support member 65 on the holding region side and the inclined surface 751 are maintained at an obtuse angle (90 degrees or more), and no step is formed between the support member 65 and the swing member 70. Therefore, the lower end of the swing member 70 (inclined surface 751) is caught by the print medium M (sheet), and thereby the swing member 70 swings in a direction in which the pair of holding pins 78 are separated from each other. Can be prevented from interfering with the print medium M (sheet).

  Therefore, as shown in FIG. 24A, when the printing medium M (roll) (not shown in FIG. 24) is further lifted, the printing medium M (sheet) comes into contact with the inclined surface 751.

  Then, as shown in FIG. 24B, the inclined surface 751 (swing member 70) receives a force from the print medium M (sheet) and is pushed into the support member 65 side by a so-called wedge effect, and a pair of holding members is held. The swing member 70 swings about the swing shaft 652 in the direction in which the pins 78 approach each other.

  Further, when the printing medium M (roll) is pulled up, the printing medium M (sheet) comes into contact with the inclined surface 781 of the holding pin 78. At this time, the inclined surface 781 (holding pin 78) is pushed from the printing medium M (sheet) toward the support member 65, and the swinging member 70 is moved in the direction in which the pair of holding pins 78 are separated from each other. Swing around the axis.

  Further, when the printing medium M (roll) is further pulled up, the printing medium M (sheet) comes into contact with the inclined surface 782 of the holding pin 78. At this time, the inclined surface 782 (holding pin 78) is further pushed from the print medium M (sheet) toward the support member 65, and the swinging member 70 further swings in a direction in which the pair of holding pins 78 are separated from each other.

  Therefore, as shown in FIG. 24C, the holding pin 78 is pushed into the support member 65, so that the printing medium M (sheet) can be easily moved without being caught by the swing member 70 and the holding pin 78. It can be taken out from the roll guide 60.

  In the case where the first urging spring 791 is provided and the urging force is small, when the printing medium M (sheet) comes into contact with the inclined surface 751, the inclined surface 751 (swing member 70) Regardless of the urging force of one urging spring 791, the force is received from the printing medium M (sheet), and the urging member 70 is pushed toward the support member 65 by a so-called wedge effect, so that the pair of holding pins 78 approach each other. Swing. Then, when the print medium M (sheet) passes through the inclined surface 751, the swing member 70 starts to swing in the direction in which the pair of holding pins 78 are separated from each other, and swings when the print medium M (sheet) reaches the vicinity of the swing shaft 652. The movement is completed (see FIG. 24C).

  As described above, the print medium M (sheet) can be prevented from being caught when the print medium M is taken out regardless of the presence or absence of the first biasing spring 791. Further, since the swing member 70 returns to the initial state after the printing medium M is taken out, the next printing medium M can be easily loaded.

  Of course, by applying the first urging spring 791 (first urging means) to this embodiment, the operation of oscillating the oscillating member 70 in a direction in which the pair of holding pins 78 are separated from each other is stably performed. be able to.

[Effect of this embodiment]
As described above, according to the present embodiment, the support member 65 includes the pair of support members 65 that sandwich the roll-shaped print medium M and the pair of holding pins 78 that rotatably hold the print medium M, and swings on the support member 65. A pair of oscillating members 70 that are freely attached and oscillate in a direction in which the pair of holding pins 78 come close to each other by coming into contact with the printing medium M, and from the support member 65 of the oscillating member 70 to the printing medium M. The portion protruding into the holding area is provided with an inclined surface 751 that forms an outer shape protruding from the support member 65 in the direction of taking out the print medium M.

  With the above configuration, when the printing medium M is taken out from the roll guide 4, even if the swing member 70 protrudes from the surface of the support member 65, a printing medium in which a part of the printing medium M (roll) is bent and hangs down. M (sheet) slips on the inclined surface 751 without being caught by the fitting portion 74 and escapes. Therefore, the printer 100 can prevent the print medium M from being caught when the print medium M is taken out.

  In the present embodiment, a first urging spring 791 (first urging means) is provided that imparts an urging force to the oscillating member 70 such that the pair of holding pins 78 oscillate in a direction away from each other.

  Thereby, the operation | movement which rock | fluctuates the rocking | swiveling member 70 in the direction which a pair of holding pin 78 mutually spaces apart can be performed stably.

  In the present embodiment, the outer shape of the end portion of the inclined surface 751 in the insertion direction of the print medium M as viewed from the rocking axis direction of the rocking member 70 is disposed inside the outer shape of the support member 65.

  As a result, the printing medium M (sheet) in which a part of the printing medium M (roll) bends and hangs down comes into contact with the lower end of the inclined surface 751, so that the swinging member 70 swings in a direction protruding toward the holding region. This can prevent the print medium M (sheet) from being caught when the print medium M is taken out.

  In the present embodiment, the swinging member 70 swings in the initial state in which the pair of holding pins 78 is swung in a direction in which the pair of holding pins 78 are separated from each other, and in the direction in which the pair of holding pins 78 approach each other by contacting the print medium M. A swaying state (first swaying state, second swaying state), and a moving state (locked state) in which the holding pin 78 moves downward by a predetermined distance by receiving a load from the print medium M after the swaying state. , The fitting portion 74 that protrudes from the support member 65 toward the holding area of the print medium M in the initial state and is fitted into the support member 65 (fitted portion 653) in the moving state, and the swinging member 70. And a shielding portion 75 having an outer shape that places the outer shape of the fitting portion 74 on the inner side when viewed from the rocking axis direction. The inclined surface 751 is formed in the shielding portion 75.

  As a result, the printing medium M (sheet) in which a part of the printing medium M (roll) is bent and hangs down is provided on the shield 75 while maintaining the function of inhibiting the rocking member 70 of the fitting part 74 from swinging. By contacting the lower end of the inclined surface 751 that forms a part of the outer shape of the shielding portion 75, the swinging member 70 is prevented from swinging in the direction of protruding toward the holding region, and printing when the print medium M is taken out The medium M (sheet) can be prevented from being caught.

  The embodiment of the present invention has been described above, but the above embodiment is merely one example of application of the present invention, and the technical scope of the present invention is limited to the specific configuration of the above embodiment. is not.

  The printer 100 may perform printing by, for example, an inkjet method, a thermal method, or the like.

DESCRIPTION OF SYMBOLS 100 Printer 10 Case 101 Roll storage recessed part 11 Cover 11a Engagement part 13 Support shaft 14 Lever 15 Printing part 16 Ejection port 17 Cutter 18 Transmission sensor 18a Light emission unit 18b Light reception unit 19 Operation unit 20 Platen roller 21 Reflection sensor 22 Transmission sensor 22a Light emitting unit (light emitting unit)
22b Light receiving unit (light receiving unit)
DESCRIPTION OF SYMBOLS 30 Printing unit 31 Main body part 32 Thermal head 33 Ribbon supply shaft 34 Ribbon take-up shaft 35 Partition member 35a Base part 35b Shaft part 35d Support part 35e Engagement part 35f Conveyance guide part 35g Through-hole 36 Guide shaft 37 Guide shaft 40 Controller 50 Printing unit 55 Partition member 60 Roll guide 61A Rack 61B Rack 62 Pinion 63 Guide groove 641 Locking groove 642 Stopper 643 Operation part 65 Support member 651 Housing part 652 Swing shaft 653 Fit-in part 653a Protrusion part 654 Locking part 655 Inclined surface 70 swing member 71 arm portion 711 bearing portion 712 swing support point 713 stopper 72 first extending portion 73 second extending portion 74 fitting portion 74a recessed portion 741 inclined surface 75 shielding portion 751 inclined surface 76 retracting operation portion 761 supporting point receiving portion 771 Head portion 772 Constricted portion 78 Holding pin 781 Inclined surface 782 Inclined surface 791 First energizing spring 792 Second energizing spring M Print medium P Tube material R Ink ribbon

Claims (4)

A pair of support members that sandwich the roll-shaped print medium;
A pair of holding pins that rotatably hold the print medium and are swingably attached to the support member, respectively, and a pair of the holding pins that swing in a direction approaching each other by contacting the print medium. A rocking member of
With
A printer provided with an inclined surface that forms an outer shape that protrudes from the support member toward a direction in which the print medium is taken out, at a portion that protrudes from the support member to the print medium holding region of the swing member. The printer according to claim 1.
A printer comprising biasing means for applying a biasing force that swings a pair of holding pins in a direction away from each other to the swinging member. The printer according to claim 1 or 2,
A printer in which the outer shape of the end portion of the inclined surface in the insertion direction of the print medium is disposed inside the outer shape of the support member when viewed from the swing axis direction of the swing member. The printer according to any one of claims 1 to 3,
The swing member is
An initial state in which the pair of holding pins are swung in a direction in which they are separated from each other, a rocking state in which the pair of holding pins are swung in a direction approaching each other by contacting the print medium, After that, the holding pin is variably arranged to move downward by a predetermined distance by receiving a load from the print medium,
A fitting portion that protrudes from the support member to the holding region side of the print medium in the initial state and is fitted into the support member in the moving state;
A shielding portion having an outer shape that arranges the outer shape of the fitting portion on the inner side when viewed from the rocking axis direction of the rocking member,
The inclined surface is a printer formed on the shielding portion.

Images