JP6112355B2 - Printing device - Google Patents

Description

  The present invention relates to a printing apparatus that forms a print on a print medium.

  2. Description of the Related Art A printing apparatus that forms a print on a tube-shaped print medium is known (for example, see Patent Document 1). In this prior art, a print medium is conveyed from a tube cartridge capable of supplying a tube-shaped print medium (mark tube), and a thermal head (thermal transfer print head) performs desired printing on the conveyed print medium. Form. The user can use the tube-shaped printing medium on which printing is formed as a tube with printing.

Japanese Utility Model Publication No. 6-74345

  However, when the print medium is tube-shaped as described above, the air inside the tube moves to the upstream side of the position of the transport roller as the above-described print formation is continuously performed. Air easily accumulates, and once collected air is difficult to escape. As a result, the tube-like structure swells due to the accumulated air, and there is a risk of poor conveyance inside the tube cartridge. In the above prior art, no particular consideration has been given to such a point.

  The objective of this invention is providing the printing apparatus which can prevent that a conveyance defect arises inside a tube cartridge.

  In order to achieve the above-described object, the present invention drives a cartridge holder that can detach a cartridge that can continuously supply and continuously supply a print medium, and a conveyance roller that conveys the print medium supplied from the cartridge. The relative positional relationship between the driving means, the thermal head that performs printing on the printing medium conveyed by the conveying roller, the energizing means that controls the energization of the thermal head, and the conveying roller and the thermal head. Selectively switching between a pressing state in which the transport roller presses the print medium against the thermal head with a predetermined pressing force when the print is formed, and a separated state in which the transport roller is separated from the print medium. And a switching device that enables the printing process to form a desired print on the print medium, Attribute detecting means for detecting an attribute of the print medium in the cartridge mounted on the cartridge holder, and whether a tube cartridge capable of supplying the tube-shaped print medium is mounted based on the detection result of the attribute detection means. A first determination unit that determines whether or not, an integration unit that integrates a printing length or a conveyance length along a conveyance direction when the printing process is performed on the print medium, and Based on the integration result, the tube cartridge is mounted by the second determination means for determining whether the integrated value of the printing length or the conveyance length has reached a predetermined limit value, and the first determination means. And when the second determination means determines that the integrated value has reached the limit value, the transport roller and the thermal head To switch the relative positional relationship between the addition the separated state after switching from the pressing state to the separated state to the pressed state, for controlling said switching means, and having a switching control means.

  The printing apparatus of the present invention includes a cartridge holder. A tube cartridge capable of supplying a tube-shaped print medium can be attached to the cartridge holder. When the tube cartridge is mounted and used, a conveyance roller driven by a driving unit conveys a tube-shaped print medium from the tube cartridge. A thermal head energized by the energizing means forms a desired print on the conveyed printing medium (printing process). The user can use the tube-shaped printing medium on which printing is formed as described above as a tube with printing.

  Here, when the print medium is in a tube shape as described above, the air inside the tube moves to the upstream side of the position of the transport roller as the printing process is continuously performed, so that the inside of the tube-like structure is obtained. Air tends to accumulate, and once collected, it is difficult for air to escape. As a result, the tube-like structure swells due to the accumulated air, and there is a risk of poor conveyance inside the tube cartridge.

  Therefore, in the present invention, attribute detecting means and integrating means are provided. In addition, the relative positional relationship between the transport roller and the thermal head is switched between the pressing state (the transport roller presses the print medium against the thermal head with a predetermined pressing force) and the separated state (the transport roller is the print medium). In a state of being separated from the other). Then, control of the switching means for removing the accumulated air is executed in accordance with the state of conveyance of the print medium during the printing process that directly causes the air movement.

  That is, when a cartridge is mounted in the cartridge holder, the attribute detection unit detects the attribute of the print medium in the cartridge. When the tube cartridge for supplying the tube-shaped print medium as described above is mounted, the determination of the first determination unit is satisfied based on the detection result of the attribute detection unit.

  On the other hand, when the printing process is continuously executed as described above, the printing length along the conveyance direction by the thermal head or the conveyance length by the conveyance roller is integrated by the integration unit. At this time, a limit value is determined in advance for the integrated value of the integrating means from the viewpoint of determining the state of conveyance of the print medium that causes the air movement. When the thermal head performs printing processing to some extent, the integrated value of the printing length or transport length reaches the limit value, and the determination of the second determination means is satisfied.

  When the determination of the first and second determination means is satisfied, that is, when the printing process is continuously performed for a certain period of time on the tube-shaped print medium with the tube cartridge mounted. The switching control unit controls the switching unit, so that the relative positional relationship between the transport roller and the thermal head is switched from the pressed state corresponding to the execution of the printing process to the separated state, and then further pressed. Switch to state.

  Specifically, for example, the above switching is executed at a predetermined timing before the printing process being executed is finished, or the above switching is executed before starting the printing process. In this way, by temporarily switching from the pressed state to the separated state during the printing process, the print medium is released from the state of being pressed between the transport roller and the thermal head. As a result, even if air has accumulated in the tube-like structure as described above, the accumulated air can be extracted from the tube end to the outside. As a result, it is possible to suppress the tube-like structure from being swollen by the accumulated air, and to prevent a conveyance failure from occurring inside the tube cartridge.

  According to the present invention, it is possible to prevent a conveyance failure from occurring inside the tube cartridge.

1 is a perspective view illustrating an appearance of a printing apparatus according to an embodiment of the present invention. It is a perspective view which shows the structure of the internal unit inside a printing apparatus in the state which removed the printed matter discharge | emission mechanism. It is a top view showing the structure of an internal unit. FIG. 4 is an enlarged plan view schematically showing a detailed structure of a cartridge. It is a top view showing the behavior at the time of forward movement of a release rod, and the top view showing the behavior at the time of reverse movement of a release rod. 3 is a functional block diagram illustrating a functional configuration of a control system of the printing apparatus. FIG. It is a flowchart showing the control procedure performed by CPU of a control system. It is a flowchart showing the control procedure performed by CPU of a control system in the modification which controls so that it may switch to a press state after switching a roller holder to a separation state at the predetermined timing before the end of the printing process in progress.

  Hereinafter, a printing apparatus according to an embodiment of the present invention will be described with reference to the drawings.

<Outline of device appearance>
In this example, the printing apparatus 1 of the present embodiment shown in FIG. 1 is connected to a PC 118 (see FIG. 6 described later) as an operation terminal via a wired or wireless communication line (not shown), and the PC 118 by a user. A desired printed matter (details will be described later) is created on the basis of the operation from the above. Note that the configuration is not limited to the configuration connected to the operation terminal, and a configuration (so-called stand-alone type) in which a printed matter is created based on a user operation on an appropriate operation unit provided in the printing apparatus 1 may be used.

  As shown in FIG. 1, the printing apparatus 1 includes an apparatus main body 2 and an opening / closing lid 3 provided on the upper surface of the apparatus main body 2 so as to be openable and closable.

  The apparatus main body 2 is located on the front side (left front side in FIG. 1), and includes a front wall 10 having a printed material discharge port 11 for discharging a printed material created in the apparatus main body 2 to the outside, and the front wall 10. Among these, a front lid 12 is provided below the printed product discharge port 11 and supported at its lower end so as to be rotatable.

  The front lid 12 includes a pressing portion 13, and the front lid 12 is opened forward by pushing the pressing portion 13 from above. Further, a power button 14 for turning on / off the printing apparatus 1 is provided at one end of the front wall 10. Below the power button 14, a cutter driving button 16 is provided for driving a cutting mechanism 15 (see FIG. 2 described later) disposed in the apparatus main body 2 by a user's manual operation. When the button 16 is pressed, the printed printing medium 109 (details will be described later) is cut, and the cut printed printing medium 109 is separated from the apparatus main body 2 as a printed matter.

  The opening / closing lid 3 is pivotally supported at the end of the apparatus main body 2 on the right rear side in FIG. 1 and is always urged in the opening direction via an urging member such as a spring. Then, when the open / close button 4 disposed on the upper surface of the apparatus main body 2 so as to be adjacent to the open / close lid 3 is pressed, the lock between the open / close lid 3 and the apparatus main body 2 is released and opened by the action of the biasing member. Is done. A see-through window 5 covered with a transparent cover is provided at the center side of the opening / closing lid 3.

<Internal unit>
Next, the structure of the internal unit 20 inside the printing apparatus 1 will be described. As shown in FIG. 2 and FIG. 3, the internal unit 20 schematically includes a cartridge holder 6 that accommodates the cartridge 7, a printing mechanism 21 that includes a thermal head 23 as printing means, a cutting mechanism 15, A half cut unit 35 having a half cutter 34 and a printed matter discharge mechanism 22 for discharging the generated printed matter to the printed matter discharge port 11 (see FIG. 1) are provided.

<Cartridge holder and cartridge>
The cartridge holder 6 accommodates the cartridge 7 so that the direction of the printed medium 109 that has been printed toward the printed product discharge port 11 is the vertical direction. A plurality of detection rods that can move forward and backward are provided in one place on the inner peripheral wall of the cartridge holder 6 to constitute a cartridge sensor 100 (see FIG. 6 described later). The cartridge sensor 100 (corresponding to attribute detection means) is configured to insert detection rods into a plurality of detection holes of a detected portion provided at one place on the outer peripheral wall of the cartridge 7 when the cartridge 7 is mounted on the cartridge holder 6. The type of the cartridge 7 mounted on the cartridge holder 6 (in other words, whether the print medium 101 is in a tube shape or a tape shape, and also in the width direction size, depending on the on / off combination depending on the presence or absence of Or the like) and a corresponding signal can be output.

  Next, the detailed structure of the cartridge 7 will be described with reference to FIG. 4 and FIG. In the present embodiment, the cartridge 7 includes a tube cartridge that supplies a flat tube-like print tube as the print medium 101 and a tape cartridge that supplies a tape-like print tape as the print medium 101. Hereinafter, a case where the cartridge 7 is a tube cartridge will be mainly described as an example. However, the tape cartridge has the same structure except for the shape of the print medium 101 as described above.

  As shown in FIG. 4 and FIG. 3, the cartridge 7 (corresponding to the tube cartridge in this example as described above) includes the print medium roll 102 around which the print medium 101 is wound, and the print medium. It has a feed roller 27 that conveys the medium 101 toward the outside of the cartridge 7.

  The feed roller 27 is a feed roller drive shaft 108 (see FIGS. 2 and 2) via a gear mechanism (not shown) driven by a transport motor 119 (see FIG. 3 and FIG. 2 described above) provided outside the cartridge 7, for example, a pulse motor. 3), the rotation is driven in conjunction.

  The print medium roll 102 has the print medium 101 wound around a reel member 102a (in this example, a flat tube shape) wound around the reel member 102a. The reel member 102 a is housed by being rotatably inserted into a boss 95 erected on the bottom surface of the cartridge 7.

  In this example, the print-receiving medium 101 is a print-receiving tube in which a heat-sensitive layer 101a that develops color by heat is formed on the surface on one side, as shown in the enlarged view of the AA cross section in FIG. The print medium 101 is wound around the reel member 102a with the surface on which the heat-sensitive layer 101a is formed as the inner peripheral side, and the print medium roll 102 is formed. Instead of the heat-sensitive layer 101a, for example, an image receiving layer made of a transparent film of a printing material may be provided, and a print may be formed by thermal transfer of ink by overlapping with an ink ribbon provided in the cartridge 7.

  Although illustration is omitted, when the cartridge 7 is the tape cartridge described above, a surface of one side which becomes the inner peripheral side of the heat sensitive layer similar to the heat sensitive layer 101a as the print medium 101 is formed on the inner peripheral side. The tape to be printed is provided. This print-receiving tape has a three-layer structure in which a film made of PET (polyethylene terephthalate) or the like having a heat-sensitive layer, an adhesive layer made of an appropriate adhesive material, and release paper are laminated in order.

  Note that, on the upper surface of the cartridge 7, for example, a print medium specifying display portion 8 that displays the width of the print medium 101 built in the cartridge 7 is provided.

<Head mounting part and roller holder>
On the other hand, the thermal head 23 having a large number of heat generating elements is attached to a head mounting portion 24 erected on the cartridge holder 6 and is disposed upstream of the feed roller 27 of the feed roller drive shaft 108 in the transport direction. Yes.

  Further, a roller holder 25 is pivotally supported by a support shaft 29 in front of the cartridge 7 in the cartridge holder 6 (lower side in FIG. 3), and a platen roller 26 (conveyance) is supported on the roller holder 25. And a pressure contact roller 28 are rotatably arranged. The roller holder 25 is pressed toward the thermal head 23 so that the platen roller 26 presses the print medium 101 against the thermal head 23 with a predetermined pressing force (the state shown in FIGS. 3 and 4). The platen roller 26 can be switched to a separated state (state shown in FIG. 2) in which the platen roller 26 is separated from the print medium 101 by being returned to the side opposite to the thermal head 23 side.

  Switching of the roller holder 25 will be described with reference to FIGS. 4, 2, and 3. In order to selectively switch the roller holder 25 between the pressed state and the separated state when the cartridge 7 is attached to the cartridge holder 6, a release motor 131, a release rod holding plate 81, a release rod 82, and A crank gear mechanism G is provided. The release motor 131, the release rod holding plate 81, the release rod 82, and the crank gear mechanism G constitute switching means described in each claim.

  That is, the drive output gear 131 a of the release motor 131 is operatively connected to the cam gear 132 a provided on the cam shaft 132 via the crank gear mechanism G. The camshaft 132 is inserted into the crankshaft hole 133 of the release rod holding plate 81. As a result, the release motor 131 rotates in one direction, the driving force is transmitted to the cam gear 132, and the cam shaft 132 rotates in the corresponding direction, whereby the release rod holding plate 81 moves forward to the cutting mechanism 15 side. . Further, the release motor 131 rotates in another direction opposite to the one direction, the driving force is transmitted to the cam gear 132, and the cam shaft 132 rotates in the corresponding direction. Retreating away from the cutting mechanism 15.

  At this time, as shown in FIGS. 2, 3, and 5, the roller-like release rod 82 is provided at the distal end portion of the release rod holding plate 81 on the cutting mechanism 15 side. When the release rod holding plate 81 is moved forward by rotational driving in one direction of the release motor 131 (see the thin arrow in FIG. 5A), the release rod 82 is also moved forward and the step portion 25b of the roller holder 25 is moved. It contacts so that it may ride on the inclined surface 25a from the side. As a result, the roller holder 25 rotates around the support shaft 29 (see the thick arrow in FIG. 5A), and the platen roller 26 presses against the thermal head 23 side (the pressing state described above). On the other hand, when the release rod holding plate 81 moves backward from the pressed state by rotational driving in the other direction of the release motor 131 (see the thin arrow in FIG. 5B), the release rod 82 also moves backward to It moves from the end of the inclined surface 25a to the stepped portion 25b and releases the contact with the inclined surface 25a. As a result, the roller holder 25 rotates around the support shaft 29 in the opposite direction (see the thick arrow in FIG. 5B), and the platen roller 26 is separated from the thermal head 23 side (the above separation state). .

  At this time, a downward U-shaped frame-shaped locking portion 81 a is provided on the upper edge of the release rod holding plate 81. A rotatable position detection sensor 80 is provided on the support wall 6A provided to cover the outside of the release rod holding plate 81 on the cartridge holder 6 so as to correspond to the locking portion 81a. A projecting operation portion 80a protrudes from one end of the sensor switch 80, and is engaged in the U-shaped frame of the locking portion 81a. Thus, as described above, as the release rod holding plate 81 moves forward and backward by driving the release motor 131, the operation portion 80a is swung left and right by the locking portion 81a. As a result, the position detection sensor 80 detects the position in which the operation unit 80a is swung in an appropriate manner, and thus the positions of the release rod holding plate 81 and the release rod 82, in other words, Whether the roller holder is in the pressed state or the separated state can be detected.

  As described above, instead of the configuration in which the platen roller 26 is moved closer to the thermal head 23 by the rotation of the roller holder 25, the position of the platen roller 26 is fixed and the thermal head 23 is moved closer to the platen roller 26. Also good. In this case, the mechanism for driving the thermal head 23 from near to far constitutes the switching means described in each claim.

<Conveying operation of printing medium in cartridge>
In the above configuration, when the cartridge 7 is mounted on the cartridge holder 6 and the roller holder 25 is moved from the separation position to the contact position as described above, the print medium 101 is placed between the thermal head 23 and the platen roller 26. While being pinched, it is pinched between the feed roller 27 and the pressure roller 28.

  The feed roller drive shaft 108 is rotationally driven by the driving force of the transport motor 119. At this time, the feed roller drive shaft 108, the pressure roller 28 and the platen roller 26 are connected by a gear mechanism (not shown), and the feed roller 27 and the pressure roller 28 are driven by the drive of the feed roller drive shaft 108. , And the platen roller 26 rotate synchronously. As a result, the print medium 101 is fed out from the print medium roll 102.

  As shown in FIG. 4, the fed printing medium 101 is conveyed from the opening 94 while being guided by a substantially cylindrical reel 92 rotatably inserted into a reel boss 91 provided upright on the bottom surface of the cartridge. It is conveyed downstream along the direction and supplied to the thermal head 23. At this time, the thermal head 23 is energized by the print driving circuit 120 (see FIG. 6 described later). As a result, the heat-sensitive layer 101a of the print medium 101 is colored to print a desired print on the surface. Then, the printed printing medium 101 for which printing has been completed is sandwiched between the feed roller 27 and the pressure roller 28 and is carried out of the cartridge 7 from the printing medium discharge port 96 as the printed printing medium 109. Thereafter, conveyance by the discharge roller 51, cutting by the cutting mechanism 15 and the like are performed (details will be described later).

<Cut mechanism>
The cutting mechanism 15 (corresponding to a cutting unit) cuts the print medium 101 in the thickness direction so as to cut it. That is, when the printing medium 101 is a printing tube, the printing medium 101 is cut over the entire circumference. When the printing medium 101 is a printing tape or the like, all of the printing medium 101 is cut. Cut the layers. As a result, a printed matter (tube with print or print label) having the above print is created. As shown in FIGS. 2, 3, and 4, the cutting mechanism 15 includes a fixed blade 40, a movable blade 41 that performs a cutting operation together with the fixed blade 40, and a cutter helical gear connected to the movable blade 41. 42 (see FIG. 2) and a cutter motor 43 (see FIG. 6 described later) connected to the cutter helical gear 42 by a gear train. The cutter helical gear 42 is provided with a boss 50 formed in a protruding shape, and this boss 50 is inserted into the elongated hole 49 of the movable blade 41 (see FIG. 2).

  The fixed blade 40 is fixed to a side plate 44 (see FIG. 3) provided upright on the side of the cartridge holder 6 with a screw or the like through a fixing hole. The movable blade 41 is substantially V-shaped, and the elongated hole 49 is formed in the handle portion 46 on the opposite side of the blade portion (not shown) provided at the cutting portion of the movable blade 41.

  When the cutter helical gear 42 is rotated by the cutter motor 43, the movable blade 41 is swung by the engagement between the boss 50 and the long hole 49, and the printed medium 109 is cut. At this time, a cutter helical gear cam 42A is provided on the cylindrical outer wall of the cutter helical gear 42. When the cutter helical gear 42 is rotated by the cutter motor 43, the micro switch 126 (see FIG. 2) provided adjacent to the cutter helical gear 42 is switched from the OFF state to the ON state by the action of the cutter helical gear cam 42A. The cutting state of the printed printing medium 109 is detected.

<Half cut unit>
A detailed configuration of the half-cut unit 35 will be described. The cutting by the half-cut unit 35 is performed when the tape cartridge provided with the print-receiving medium 101 that is the print-receiving tape is mounted as the cartridge 7. The print-receiving tape includes a plurality of layers (for example, a film as a substrate, an adhesive layer provided with an adhesive, and a release paper as a release material). The half cut unit 35 cuts other layers (partial cut) while leaving a part of the layers. The half-cut unit 35 includes the fixed blade 40 and the movable blade 41 on the downstream side of the fixed blade 40 and the movable blade 41 along the conveyance direction of the printed medium 109 (printed tape in this example). It is attached so that it may be located between the 1st guide walls 55 and 56 (refer FIG. 3).

  As shown in FIG. 2, the half-cut unit 35 includes a cradle 38 that is disposed on the fixed blade 40 side from the transport path of the printed print medium 109, and a half that is disposed so as to face the cradle 38. A first guide portion 36 disposed between the cutter 34, the fixed blade 40 and the pedestal 38 so as to be aligned with the fixed blade 40; and a second guide portion 37 disposed opposite to the first guide portion 36. It has.

  The first guide portion 36 and the second guide portion 37 are integrally formed, and the side plate 44 (FIG. 3) together with the fixed blade 40 by a guide fixing portion 36A (see FIG. 2) provided at a position corresponding to the fixing hole of the fixed blade 40. Attached).

  The cradle 38 includes a receiving surface 38 </ b> B that is located on the opposite side of the half cutter 34 across the transport path of the printed print medium 109 and receives the half cutter 34.

  Further, a half cutter motor 129 (see FIG. 6 described later) is provided to rotate the half cutter 34 around a predetermined rotation fulcrum (not shown). By transmitting the rotational driving force from the half cutter motor 129 to the half cutter 34 in a predetermined direction, the half cutter 34 can be rotated in a predetermined direction (clockwise or counterclockwise).

  In the above configuration, the half cutter 34 is pressed against the receiving surface 38 </ b> A using the driving force of the half cutter motor 129. As a result, the printed print medium 109 between the half cutter 34 and the receiving surface 38A is partially cut (half cut) in the thickness direction as described above, and substantially in the print medium width direction. A half-cut line is formed along the line.

<Printed material discharge mechanism>
The printed matter discharge mechanism 22 forcibly discharges the printed print medium tape 109 (in other words, a tube with print, a printed label, etc .; the same applies hereinafter) after being cut by the cutting mechanism 15 from the printed matter discharge port 11. That is, the printed matter discharge mechanism 22 includes a discharge roller 51 that is driven by a print medium discharge motor 65 (see FIG. 6 described later), and a pressure roller that faces the discharge roller 51 with the printed print medium 109 interposed therebetween. 52.

  At this time, the first guide walls 55 and 56 and the second guide walls 63 and 64 for guiding the printed medium 109 to be printed to the printed product discharge port 11 are provided inside the printed product discharge port 11. (See FIG. 3). The first guide walls 55 and 56 and the second guide walls 63 and 64 are integrally formed, and at a discharge position of the printed printing medium 109 cut by the fixed blade 40 and the movable blade 41, a predetermined distance from each other. It is arranged to be separated.

<Control system>
Next, the control system of the printing apparatus 1 will be described with reference to FIG. In FIG. 6, a control circuit 110 is disposed on a control board (not shown) of the printing apparatus 1.

  The control circuit 110 includes a CPU 111 having an internal timer 111A for controlling each device, an input / output interface 113 connected to the CPU 111 via a data bus 112, a CGROM 114, ROMs 115 and 116, and a RAM 117. It has been. The input / output interface 113 is connected to the PC 118 as the operation terminal described above.

  In the CGROM 114, for example, dot pattern data relating to each of a large number of characters is stored in association with code data. In a ROM (dot pattern data memory) 115, for each of a large number of characters for printing characters such as alphabet letters and symbols, printing dot pattern data is provided for each typeface (Gothic typeface, Mincho typeface, etc.). Each typeface is classified and stored in correspondence with the code data for the print character size. In addition, graphic pattern data for printing a graphic image including gradation expression is also stored. The dot pattern data for display and printing stored in the CGROM 114 and ROM 115 can be read from the PC 118 side via the communication line, and displayed or printed on the PC 118 side receiving the data. You may do it.

  The ROM 116 reads a print buffer data in correspondence with character code data such as characters and numbers input from the PC 118, and drives the thermal head 23, the conveyance motor 119, and the like, and A pulse number determination program for determining the number of pulses corresponding to the amount of energy to form each printing dot, and when printing is completed, the printed motor medium 119 is driven to the cutting position to convey the printed medium 109 to be printed and printed. A cutting drive control program for cutting the medium 109, a printed material discharge program for forcibly discharging the cut printed medium 109 (= printed tube, print label) from the printed material discharge port 11; Various programs necessary for control and the like are stored. The CPU 111 performs various calculations based on various programs stored in the ROM 116.

  The RAM 117 is provided with a text memory 117A, a print buffer 117B, a parameter storage area 117E, and the like. The text memory 117A stores document data input from the PC 118. The print buffer 117B stores print dot patterns such as a plurality of characters and symbols as dot pattern data, and the thermal head 23 performs dot printing according to the dot pattern data stored in the print buffer 117B. Various calculation data are stored in the parameter storage area 117E.

  The input / output interface 113 includes the cartridge sensor 100, the print drive circuit 120 for controlling the energization of the thermal head 23 (corresponding to the energizing means), and a conveyance motor for driving the conveyance motor 119. Drive circuit 121 (corresponding to drive means), cutter motor drive circuit 122 for driving the aforementioned cutter motor 43, half cutter motor drive circuit 128 for driving the aforementioned half cutter motor 129, and the aforementioned printed matter A printed matter discharge motor drive circuit 123 for driving the discharge motor 65, a cut detection sensor 124 for detecting that the printed print medium 109 has been cut, a cut release detection sensor 125, and the release motor 131 are provided. Release motor drive circuits 130 for driving are respectively connected. There.

  In such a control system having the control circuit 110 as the core, when character data or the like is input via the PC 118, the text (document data) is sequentially stored in the text memory 117A, and the thermal head 23 is driven by the drive circuit. 120, each of the heat generating elements is selectively driven to generate heat corresponding to the print dots for one line, and the dot pattern data stored in the print buffer 117B is printed, and in synchronization with this, for carrying The motor 119 is driven via the transport motor drive circuit 121 to transport the print medium 101 and the printed medium 109 that has been printed. When the printing of the dot pattern data is completed, the conveyance of the printed printing medium 109 is stopped, and the cutter motor 43 is driven via the cutter motor drive circuit 122 so that the cutting mechanism 15 causes the printing medium 109 to be printed. Cutting is done. Thereafter, the print medium discharge motor 65 is driven via the print medium discharge motor drive circuit 123, so that the printed print medium 109 (tube with print, print label) after being cut is discharged outside the apparatus. The

<Features of this embodiment>
Here, when the tube cartridge is used as the cartridge 7 (hereinafter referred to as “tube cartridge 7” as appropriate), the print medium 101 has a tube shape as described above. As the tube with printing is continuously formed, the air inside the tube moves to the upstream side in the conveying direction from the position of the platen roller 26, so that the air easily collects inside the tube-like structure, and the once accumulated air is released. Hateful. As a result, if the tube-like structure swells due to the accumulated air, there is a possibility that a conveyance failure of the print medium 101 occurs inside the tube cartridge 7.

  Therefore, in the present embodiment, when the tube processing medium 101 is mounted and the printing processing is continuously performed on the tube-shaped print medium 101 for a certain period of time, the roller holder 25 is driven and the platen roller is driven. The state is switched from the pressed state in which the print medium 26 presses the print medium 101 against the thermal head 23 to the separated state in which the platen roller 26 is separated from the print medium 101.

<Control procedure>
A control procedure executed by the CPU 111 including switching from the pressed state to the separated state will be described with reference to FIG. The flow shown in FIG. 7 is performed by, for example, performing a predetermined printed matter creation instruction by appropriately operating the PC 118 after the user turns on the power of the printing apparatus 1 (or after replacing the cartridge 7 with the power on). Be started.

  In FIG. 7, first, in step S5, the CPU 111 resets all of the tube cartridge flag FA and the conveyance length limit flag FB to 0, and further resets the conveyance length integrated value LC to 00. Here, the tube cartridge flag FA indicates that the cartridge 7 is a tube cartridge, and the transport length limit flag FB indicates that the integrated value of the transport length of the printing medium 101 by the platen roller 26 is a limit value (details will be described later). ) Is reached. When step S5 ends, the process proceeds to step S10.

  In step S10, the CPU 111 determines whether the cartridge 7 attached to the cartridge holder 6 is the tube cartridge based on the detection result of the cartridge sensor 100. As described above, when the user mounts the cartridge 7 in the cartridge holder 6, the cartridge sensor 100 detects the type of the mounted cartridge 7 (in other words, the attribute of the print medium 101). If the cartridge sensor 100 detects that the mounted cartridge 7 is a tube cartridge that supplies the tube to be printed, the determination is satisfied (step S10: YES), and the process proceeds to step S15. If the cartridge sensor 100 detects that the mounted cartridge 7 is a tape cartridge that supplies a print-receiving tape, the determination is not satisfied (step S10: NO), and the process proceeds to step S20 described later.

  In step S15, the CPU 111 sets the flag FA to FA = 1, and proceeds to step S20.

  In step S <b> 20, the CPU 111 outputs a control signal to the release motor drive circuit 130 via the input / output interface 113, and moves the release rod 82 and the release rod holding plate 81 forward by driving the release motor 131. As a result, the platen roller 26 of the roller holder 25 is in the pressing state in which the printing medium 101 is pressed against the thermal head 23 with a predetermined pressing force, and the printing medium 101 is sandwiched between the platen roller 26 and the thermal head 23. (See FIG. 5A). When step S20 ends, the process proceeds to step S25.

  In step S <b> 25, the CPU 111 outputs a control signal to the transport motor drive circuit 121 via the input / output interface 113, and rotationally drives the feed roller 27, the platen roller 26, and the like with the drive force of the transport motor 119. Further, a control signal is output to the printed matter discharge motor 65 via the printed matter discharge motor drive circuit 123 to drive the discharge roller 51 to rotate. As a result, the print medium 101 is fed from the print medium roll 102 and conveyed. Thereafter, the process proceeds to step S30.

  In step S30, the CPU 111 determines whether or not the print medium 101 has reached the print start position by the thermal head 23 (in other words, the thermal head 23 faces the front end position in the transport direction of the print area of the print medium 101). It is determined whether or not the print medium 101 has been conveyed up to. Note that this determination may be made, for example, by determining whether or not the conveyance has been performed for a predetermined distance from the start of conveyance of the printing medium in step S25. For example, the predetermined distance is determined by counting the number of pulses output from the conveyance motor drive circuit 121 that drives the conveyance motor 119, which is a pulse motor, after the timing of step S25, and the count number is the predetermined number. It is sufficient to detect whether a predetermined value corresponding to the distance is reached. Alternatively, it may be determined whether a predetermined time has elapsed since the start of the tape conveyance. The determination is not satisfied until the print start position is reached (step S30: NO), and the loop waits. When the print start position is reached, the determination is satisfied (step S30: YES), and the process proceeds to step S35.

  In step S <b> 35, the CPU 111 outputs a control signal to the print drive circuit 120 via the input / output interface 113 and energizes the thermal head 23. As a result, the heat-sensitive layer 101a of the print medium 101 is colored, and printing of predetermined prints such as characters, symbols, and barcodes corresponding to previously generated desired print data is started in the print area. Thereafter, the process proceeds to step S40.

  In step S40, the CPU 111 determines whether or not the tube cartridge flag FA is FA = 1. If the cartridge 7 attached to the cartridge holder 6 is a tube cartridge and FA = 1 (see step S15), the determination is satisfied (step S40: YES), and the process proceeds to step S65 described later.

  On the other hand, in step S40, when the mounted cartridge 7 is a tape cartridge and FA = 0, the determination is not satisfied (step S40: NO), and the process proceeds to step S45. In step S45, the CPU 111 determines whether or not the printing medium 101 (that is, the printing tape in this case) has been transported to a previously set front half-cut position (in other words, the half cutter 34 of the half-cut mechanism 35 is moved to the front half-cut position). It is determined whether the printed medium 109 that has been printed has reached the position directly opposite the cut position. The determination at this time may be performed by counting the number of pulses for driving the conveyance motor 119 as described above. The determination is not satisfied until the previous half-cut position is reached (step S45: NO). This procedure is repeated, and when it reaches, the determination is satisfied (step S45: YES), and the process proceeds to step S50.

  In step S50, the CPU 111 outputs control signals to the conveyance motor drive circuit 121 and the printed matter discharge motor drive circuit 123 via the input / output interface 113, stops driving the conveyance motor 119 and the printed matter discharge motor 65, and The rotation of the platen roller 26, the feed roller 27, the discharge roller 51, etc. is stopped. As a result, in a state where the half cutter 34 faces the front half-cut position, the printing medium 101 (printing tape) is fed from the printing medium roll 102 and the printed medium 109 (printed printing medium) is printed. (Tape) transport stops. At this time, a control signal is also output to the print drive circuit 120 via the input / output interface 113, the energization of the thermal head 23 is stopped, and the printing of the printing is stopped. Thereafter, the process proceeds to step S55.

  In step S55, the CPU 111 outputs a control signal to the half cutter motor drive circuit 128 via the input / output interface 113 to drive the half cutter motor 129 and rotate the half cutter 34, so that the printed medium 109 is printed. A pre-half cut process for partially cutting in the thickness direction to form a pre-half cut line is performed. When step S55 ends, the process proceeds to step S60.

  In step S60, the CPU 111 restarts the conveyance of the printed medium 109 by rotating the platen roller 26, the feed roller 27, the discharge roller 51, and the like in the same manner as in step S25, and as in step S35. Then, the thermal head 23 is energized to resume printing. Thereafter, the process proceeds to step S65.

  In step S65 transferred from step S40 or step S60, the CPU 111 determines whether or not the print medium 101 has reached the print end position by the thermal head 23 (in other words, the thermal head at the rear end position in the transport direction of the print area). It is determined whether the print medium 101 has been conveyed until 23 comes to face. The determination at this time may be performed by counting the number of pulses for driving the conveyance motor 119 as described above. The determination is not satisfied until the print end position is reached (step S65: NO). This procedure is repeated, and when it reaches, the determination is satisfied (step S65: YES), and the process proceeds to step S70.

  In step S70, the CPU 111 stops energization of the thermal head 23 in the same manner as in step S50, and stops printing the predetermined print. As a result, printing of a predetermined print on the print area of the print medium 101 is completed. Thereafter, the process proceeds to step S75.

  In step S75, the CPU 111 determines whether or not the tube cartridge flag FA is FA = 1 as in step S40. When the flag FA = 1 (when the tube cartridge is attached to the cartridge holder 6), the determination is satisfied (step S75: YES), and the process proceeds to step S90 described later.

  On the other hand, in the above step S75, when the flag FA = 0 (when the tape cartridge is attached to the cartridge holder 6), the determination is not satisfied (step S75: NO), and the process proceeds to step S80. In step S80, the CPU 111 determines whether or not the printed printing medium 109 (that is, the printed printing tape) has been transported to a half-cut position after being set in advance (in other words, the half-cutter 34 of the half-cut mechanism 35 is It is determined whether the printed medium 109 that has been printed reaches a position directly opposite the half-cut position. The determination at this time may be performed by counting the number of pulses for driving the conveyance motor 119 as described above. The determination is not satisfied until the rear half-cut position is reached (step S80: NO). This procedure is repeated, and when it is reached, the determination is satisfied (step S80: YES), and the process proceeds to step S85.

  In step S85, the CPU 111 rotates the half cutter 34 to partially cut the printed print medium 109 in the thickness direction to form a rear half-cut line, as in step S55. Process. When step S85 ends, the process proceeds to step S90.

  In step S90 transferred from step S75 or step S85, the CPU 111 determines whether or not the printed print medium 109 has been transported to the full cut position (in other words, to the position where the movable blade 41 faces the preset cutting line). It is determined whether the printed print medium 109 has arrived. The determination at this time may be performed by counting the number of pulses for driving the conveyance motor 119 as described above. The determination is not satisfied until the full cut position is reached (step S90: NO). This procedure is repeated, and when it reaches, the determination is satisfied (step S90: YES), and the process proceeds to step S95.

  In step S95, the CPU 111 stops the rotation of the platen roller 26, the feed roller 27, the discharge roller 51, etc., and stops the conveyance of the printed medium 109, as in step S50. As a result, the feeding of the printing medium 101 from the printing medium roll 102 and the conveyance of the printed printing medium 109 are stopped while the movable blade 41 of the cutting mechanism 15 faces the cutting line. Thereafter, the process proceeds to step S100.

  In step S100, the CPU 111 outputs a control signal to the cutter motor drive circuit 122 to drive the cutter motor 43 and rotate the movable blade 41 so that all layers of the printed print medium 109 are all in the thickness direction. A full cut process is performed to form a cutting line by cutting. Printed material that has been separated from the printed printing medium 109 by cutting by the cutting mechanism 15 and has undergone predetermined printing (if the printing medium 101 is a printing tube, a tube with printing, and the printing medium 101 is a printing tape. In this case, a print label) is generated. When step S100 ends, the process proceeds to step S105.

  In step S <b> 105, the CPU 111 outputs a control signal to the printed matter discharge motor driving circuit 123 via the input / output interface 31, restarts the driving of the printed matter discharge motor 65, and rotates the discharge roller 51. As a result, the conveyance by the discharge roller 51 is resumed, and the printed material (tube with print or printed label) generated in step S100 is conveyed toward the printed material discharge port 11 from the printed material discharge port 11 to the outside of the printing apparatus 1. Discharged. Thereafter, the process proceeds to step S110.

  In step S110, the CPU 111 determines whether or not the tube cartridge flag FA is FA = 1, as in step S40. As already described, FA = 1 if the cartridge 7 attached to the cartridge holder 6 is a tube cartridge, and FA = 0 if it is a tape cartridge. If the flag FA = 1, the determination is satisfied (step S110: YES), and the process proceeds to step S115. If the flag FA = 0, the determination is not satisfied (step S110: NO), and the process proceeds to step S130 described later.

  In step S <b> 115, the CPU 111 calculates the transport length of the printing medium 101 (that is, the printing tube) by the platen roller 23. For example, the transport length may be calculated by a method of counting the number of pulses for driving the transport motor 119 described above. At this time, the CPU 111 integrates the transport length calculated in step S115 by repetition described later, and calculates an integrated value LC. That is, the transport length newly calculated in step S115 is added to the integrated value LC previously calculated in step S115, thereby updating the new integrated value LC. When step S115 ends, the process proceeds to step S120.

  In step S120, the CPU 111 determines whether or not the conveyance length integrated value LC updated in step S115 has reached a predetermined conveyance length limit value (for example, 5 m). The limit value of the transport length is the upper limit of the transport length of the print medium 101 by the platen roller 26 from the viewpoint of determining the transport operation state of the print medium 101 that causes the air movement inside the tube of the tube cartridge 7. It is defined as. If the integrated value LC of the transport length reaches the limit value, the determination is satisfied (step S120: YES), and the process proceeds to step S125. If the integrated value LC of the transport length has not reached the limit value of the transport length, the determination is not satisfied (step S120: NO), and the process proceeds to step S130 described later.

  In step S125, the CPU 111 sets the transport length limit flag FB indicating that the integrated value LC of the transport length of the printing medium 101 by the platen roller 26 has reached the limit value to FB = 1, and proceeds to step S130. Move.

  In step S130, the CPU 111 determines whether or not creation of all the printed materials specified by the printed material creation instruction input at the start of the flow as described above has been completed. If the creation of all the printed materials has not been completed, the determination is not satisfied (step S130: NO), and the process proceeds to step S140.

  In step S140, it is determined whether or not the above-described transport length limit flag FB is FB = 1. If the integrated value LC of the conveyance length of the print medium 101 reaches the limit value and the flag FB = 1, the determination is satisfied (step S140: YES), and the process proceeds to step S145. If the integrated value LC of the conveyance length of the printing medium 101 does not reach the limit value and the flag FB = 0, the determination is not satisfied (step S140: NO), and the same procedure is returned to step S25. repeat.

  In step S 145, the CPU 111 outputs a control signal to the release motor drive circuit 130 via the input / output interface 113, and the release rod 82 and the release rod holding plate 81 are moved backward by driving the release motor 131. As a result, the platen roller 26 of the roller holder 25 is separated from the print medium 101 (see FIG. 5B), and the print medium 101 is pressed between the platen roller 26 and the thermal head 23. Is released from the released state. After that, the CPU 111 outputs a control signal to the release motor drive circuit 130 via the input / output interface 113, and moves the release rod 82 and the release rod holding plate 81 forward by driving the release motor 131 as in step S20. Then, the printing medium 101 is pressed against the thermal head 23 by the platen roller 26 with a predetermined pressing force (see FIG. 5A). When step S145 ends, the process proceeds to step S150.

  In step S150, the CPU 111 resets the transport length limit flag FB and the transport length integrated value LC to zero. When step S150 ends, the process returns to step S25 and the same procedure is repeated. As a result, the steps S25 to S125 are repeated until the production of all the printed materials is completed, and if the tube cartridge 31 is provided with a print-receiving tube, the conveyance at that time is performed. The integrated value LC of the length is sequentially updated in step S115. If the updated integrated value LC reaches the limit value during the repetition, the process returns from step S130 to step S140 with the transport length limit flag FB set to 1 in step S125. When the determination in step S140 is satisfied, in step S145, as described above, switching from the previously pressed state to the separated state and switching to the pressed state are performed again. As a result, among the number of sheets designated by the printed matter creation instruction at the start of the flow, the tube with printing up to the time when FB = 1 in step S125, the switching of the pressing state → separation state → pressing state in step S145 is not performed. To be created. Then, before starting the process of creating the next number of printed tubes (printing process) when FB = 1 in step S125, the pressing state → separating state → pressing state is switched in step S145. Since the integrated value LC is reset in step S150 after the switching, the above steps from step S25 to step S125 are repeated again for the remaining number of sheets in the same manner as described above.

  On the other hand, when the creation of all the printed materials is completed in step S130, the determination is satisfied (step S130: YES), and the process proceeds to step S135. In step S135, the CPU 111 outputs a control signal to the release motor drive circuit 130 via the input / output interface 113, and the release rod 82 and the release rod holding plate 81 are moved backward by driving the release motor 131 in the same manner as in step S145. Let As a result, the platen roller 26 of the roller holder 25 is separated from the print medium 101 (see FIG. 5B), and the print medium 101 is pressed between the platen roller 26 and the thermal head 23. Is released from the released state. When this step S135 ends, this flow ends.

  In the above, the accumulated length LC is updated by integrating the transport length of the printing medium 101 by the platen roller 26, and it is determined whether or not the integrated value LC has reached the limit value. I can't. That is, instead of the transport length, the print length (along the transport direction) to the print medium 101 by the thermal head 23 is integrated to update the integrated value, and the integrated value of the print length is a predetermined limit. It may be determined whether or not a value has been reached.

  In the above flow, step S10 functions as a first determination unit described in each claim, step S115 functions as an integration unit described in each claim, and step S120 functions as a second determination unit described in each claim. And step S145 functions as the switching control means described in each claim.

<Effect of embodiment>
As described above, in the printing apparatus 1 according to the present embodiment, the tube cartridge 7 is attached to the cartridge holder 6 to transport the tube-shaped print medium 101 (= the print tube), and the print target to be conveyed is conveyed. A desired print can be formed on the medium 101 and the user can use it as a tube with print.

  At this time, in the present embodiment, the roller holder 25 is driven to remove the accumulated air by driving the roller holder 25 in accordance with the conveyance operation state of the print medium 70 that directly causes the air movement inside the tube. 25, after switching from the pressing state in which the platen roller 26 presses the print medium 101 against the thermal head 23 with a predetermined pressing force, to the above-described separation state in which the platen roller 26 is separated from the print medium 101, (Switching to the pressed state) is executed.

  That is, when the cartridge 7 attached to the cartridge holder 6 is a tube cartridge, the transport length of the printing medium 101 is integrated, and the pressing value is triggered when the integrated value reaches the limit value. Switching from the state → the separated state → the pressed state is executed. In this way, the print medium 101 is released from the state of being pressed between the platen roller 26 and the thermal head 23 by temporarily switching from the pressed state to the separated state during the printing process. As a result, even if air has accumulated in the tube-like structure as described above, the accumulated air can be extracted from the tube end to the outside (auto release). As a result, it is possible to prevent the tube-like structure from being swollen by the accumulated air, and to prevent a conveyance failure from occurring inside the tube cartridge 7.

  In the present embodiment, in particular, when the printed tube is sequentially created by repeating Steps S25 to S130 in FIG. 7 as described above, if the integrated value LC reaches the limit value at a certain point (see Step S120 above). ), Before starting the next generation of the tube with printing (printing process), the roller holder 25 is switched from the pressed state to the separated state and then further switched from the separated state to the pressed state (step S145). reference). Thus, by switching to the separated state before the start of the printing process, the tubular structure can be reliably suppressed from being swollen by air. As a result, it is possible to prevent a conveyance failure from occurring inside the tube cartridge 7.

  In the above description, after the transport length integrated value LC first reaches the limit value (see step S120), the integrated value LC is reset (see step S150) and is counted again. Thus, every time the integrated value LC of the transport length reaches the limit value, the pressing state → the separation state → the pressing state is switched immediately before the next printed matter is created, but this is not restrictive. That is, after the transport length integrated value LC reaches the limit value for the first time, the above switching may be performed every time a printed product is created (without resetting the integrated value LC).

<Modification>
The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and technical idea of the present invention. Hereinafter, such modifications will be described in order.

(1) When switching at a predetermined timing before the end of the printing process being executed Unlike the above-described embodiment, the pressing state → the separated state → the pressing state at a predetermined timing before the end of the printing process being executed May be switched.

  An example of a control procedure executed by the CPU 111 in this modification will be described with reference to FIG. In FIG. 8, this flow differs in that step S140, step S145, and step S150 provided between step S130 and step S25 in FIG. 7 have moved between step S95 and step S100.

  In FIG. 8, steps S5 to S95 are the same as those in FIG. In step S90, it is determined that the print medium 101 has reached the full cut position (step S90: YES). When the conveyance is stopped in step S95, the process proceeds to step S140.

  The processing content of step S140, step S145, and step S150 is the same as FIG. That is, in step S140, the CPU 111 determines whether or not the transport length limit flag FB is FB = 1, and the integrated value LC of the transport length of the print medium 101 reaches the limit value and FB = 1. If YES in step S140, the determination is satisfied (step S140: YES), and in step S145, the CPU 111 executes switching from the pressed state to the separated state to the pressed state in the same manner as in step S135. In step S150, the CPU 111 resets the transport length limit flag FB and the transport length integrated value LC to 0, and proceeds to step S100 in which full cut processing is performed.

  Subsequent steps S100 to S135 are the same processing as in FIG.

  In the present modification, as described above, when the integrated value LC has reached the limit value, the pressing state → the separation state immediately before the full cut process (step S100) in the middle of the printing process. → Switch the pressed state. This ensures that the roller holder 25 is switched to the separated state in accordance with the full cutting operation of the cutting mechanism 15 in which the conveyance of the printing medium 101 is reliably stopped, and the tube-like structure is reliably expanded by the air. Can be suppressed. As a result, it is possible to prevent a conveyance failure from occurring inside the tube cartridge.

  In the above description, the integrated value LC is reset after the integrated value LC of the transport length first reaches the limit value (see step S120) and the switching is performed during the full cut (see step S145). Then (see step S150 above), the above-described switching is performed at the time of full cut every time the integrated value LC of the conveyance length reaches the limit value by counting again. However, the present invention is not limited to this. In other words, after the transport length integrated value LC reaches the limit value for the first time, the above switching may be performed every time a full cut is performed (without performing the above resetting of the integrated value LC).

  In the above description, the pressing state → the separation state → the pressing state is switched immediately before the full cut process (step S100) during the printing process. However, the present invention is not limited to this. The switching may be performed immediately before the printed matter is discharged (step S105). Further, a procedure for stopping the conveyance of the printing medium 101 at an appropriate timing during the printing process in the flow (steps S25 to S130), not immediately before or immediately after the full cut process as described above, is provided. Switching may be performed. In this case, similarly to the above, it is possible to prevent a conveyance failure from occurring inside the tube cartridge.

(2) Others The above-described phenomenon that the tube-like structure of the print medium 110 swells due to the accumulated air becomes particularly prominent when the ambient environment is relatively high. Therefore, a temperature sensor (not shown) that detects the temperature of the surrounding environment of the printing apparatus 1 may be provided at an appropriate location in the apparatus. In this case, it is determined in step S10 in FIGS. 7 and 8 that the tube cartridge is mounted, and in step S120, it is determined that the integrated value LC has reached the limit value. When a newly provided step (not shown; functions as third determining means described in each claim) determines that the temperature of the surrounding environment is higher than the limit temperature, the pressed state → the separated state → The pressing state is switched. Thereby, it can detect reliably that the temperature of the surrounding environment of the printing apparatus 1 is a high temperature state, and can perform the said switching based on the detection state. Thereby, it is possible to reliably prevent the occurrence of conveyance failure due to the swelling of the tube-like structure of the print medium 101.

  In the above, the arrows shown in FIG. 6 show an example of the signal flow, and do not limit the signal flow direction.

  The flowcharts shown in FIGS. 7 and 8 are not intended to limit the present invention to the procedures shown in the above-described flow, but to add / delete procedures or change the order within the scope of the invention and the technical idea. May be.

  In addition to those already described above, the methods according to the above-described embodiments and modifications may be used in appropriate combination.

  In addition, although not illustrated one by one, the present invention is implemented with various modifications within a range not departing from the gist thereof.

1 Printing device 6 Cartridge holder 7 Cartridge 15 Cutting mechanism (cutting means)
23 thermal head 25 roller holder 26 platen roller (conveyance roller)
100 Cartridge sensor (attribute detection means)
101 Print medium 111 CPU
120 Print drive circuit (energization means)
121 Motor drive circuit (drive means)
131 Release motor (switching means)
G Crank gear mechanism (switching means)

Claims (5)

A cartridge holder in which a cartridge capable of continuously feeding and feeding a print medium can be attached and detached;
Drive means for driving a transport roller for transporting the printing medium supplied from the cartridge;
A thermal head for performing printing on the print medium conveyed by the conveyance roller;
Energization means for controlling energization of the thermal head;
The relative positional relationship between the transport roller and the thermal head, the pressing state in which the transport roller presses the print medium against the thermal head with a predetermined pressing force when the print is formed, and the transport roller is the print target. Switching means for selectively switching to a separated state separated from the medium;
Have
A printing apparatus that executes a printing process for forming a desired print on the print medium,
Attribute detection means for detecting an attribute of the printing medium in the cartridge mounted on the cartridge holder;
First determination means for determining whether or not a tube cartridge capable of supplying the tube-shaped print target medium is mounted based on a detection result of the attribute detection means;
An accumulating means for accumulating the print length or the transport length along the transport direction when the printing process is performed on the print medium; and
Second determination means for determining whether an integrated value of the print length or transport length has reached a predetermined limit value based on an integration result of the integration means;
When the first determination unit determines that the tube cartridge is mounted, and the second determination unit determines that the integrated value has reached the limit value, the transport roller and the thermal head Switching control means for controlling the switching means so as to further switch from the separated state to the pressed state after switching the relative positional relationship from the pressed state to the separated state;
A printing apparatus comprising: The printing apparatus according to claim 1.
Temperature detecting means for detecting the temperature of the surrounding environment of the printing apparatus;
Based on the detection result of the temperature detection means, a third determination means for determining whether or not the environmental temperature at the start of creation of the printed matter is higher than a predetermined limit temperature;
Have
The switching control means includes
The first determination means determines that the tube cartridge is mounted, the second determination means determines that the integrated value has reached the limit value, and the third determination means determines the ambient environment. When the temperature is determined to be higher than the limit temperature, the relative positional relationship between the transport roller and the thermal head is switched from the pressed state to the separated state and then switched from the separated state to the pressed state. As described above, the printing apparatus controls the switching means. The printing apparatus according to claim 1 or 2,
The switching control means includes
Before the start of the printing process, the switching unit is controlled so that the relative positional relationship is switched from the pressed state to the separated state and then further switched from the separated state to the pressed state. . The printing apparatus according to claim 1 or 2,
The switching control means includes
The switching unit is controlled so that the relative positional relationship is switched from the pressed state to the separated state and further switched from the separated state to the pressed state at a predetermined timing before ending the printing process being executed. The printing apparatus characterized by performing. The printing apparatus according to claim 4.
Cutting means for cutting in the thickness direction the medium to be printed on which the printing is formed by the printing process;
The switching control means includes
As the predetermined timing, immediately before or immediately after the cutting means executes the cutting, the relative positional relationship is switched from the pressed state to the separated state, and then further switched from the separated state to the pressed state. A printing apparatus that controls a switching means.

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