Printing apparatus

Abstract

A printing apparatus according to one embodiment of the present disclosure includes: a printing unit that performs printing on recording paper; a main body part (2) supporting a first part of the printing part; and an opening / closing section (3) that is connected to the main body section (2) so as to be rotatable about a rotation axis (32) orthogonal to the width direction (Y-axis direction) of the recording paper, and that supports the second portion of the printing section. Furthermore, the printing device is provided with an opening / closing lever (8) which is provided at a second end portion (3E2) of the opening / closing portion (3) on the opposite side of the first end portion connected to the main body portion (2), and which rotates between a release position at which the opening / closing portion (3) can be opened and closed and a lock position at which the opening / closing portion (3) is fixed to the main body portion (2). In addition, the printing device is provided with an opening and closing sensor (9) which is arranged on the main body part (2) and detects that the opening and closing rod (8) is located at the locking position.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a printing device. BACKGROUND

[0002] Conventionally, a thermal printer is known (for example, refer to Patent Literature 1). The thermal printer described in Patent Literature 1 is provided with a main body portion and a cover portion that is rotatably supported to the main body portion.

[0003] The cover portion of the thermal printer described in Patent Literature 1 is locked to the main body portion by a lock mechanism that is linked to an opening / closing button provided to the main body portion in a normal use state. When the opening / closing button is pressed, the lock mechanism is linked to the movement of the opening / closing button, and the locking of the cover portion to the main body portion is released. Then, the cover portion that is released from the locking can be rotated with respect to the main body portion around a rotation center axis that is orthogonal to the width direction of a paper sheet and opened to the side.

[0004] PRIOR ART DOCUMENTS

[0005] PATENT LITERATURE

[0006] Patent Literature 1: Japanese Patent Application Publication No. 2012-171114 SUMMARY

[0007] PROBLEMS TO BE SOLVED BY THE INVENTION

[0008] The thermal printer described in Patent Literature 1 releases the locking of the cover portion to the main body portion based on the lock mechanism by pressing the opening / closing button, but cannot detect a half-locked state in which the locking of the cover portion to the main body portion is released in a state in which the cover portion is closed. Therefore, the user of the thermal printer can perform an operation or maintenance of the thermal printer without noticing that the thermal printer is in the half-locked state.

[0009] In addition, in the thermal printer described in Patent Literature 1, the opening / closing button is provided to the main body portion. Therefore, if the thermal printer is arranged in a limited space, it can be difficult to press the opening / closing button due to an obstacle around the thermal printer, and the locking of the cover portion to the main body portion based on the lock mechanism cannot be released.

[0010] SOLUTION TO THE PROBLEM

[0011] The present disclosure provides a printing device that can detect a half-locked state in which an opening / closing portion that is linkably opened and closed to a main body portion is not fixed to the main body portion in a state in which the opening / closing portion is closed to the main body portion. In addition, the present disclosure provides a printing device that can release a locked state of an opening / closing portion to a main body portion even in a limited space.

[0012] One embodiment of the present disclosure provides a printing device including: a printing unit that performs printing on a recording paper; a main body unit that supports a first portion of the printing unit; an opening and closing unit that is rotatably coupled to the main body unit with a rotation axis orthogonal to a width direction of the recording paper, supports a second portion of the printing unit, and is rotatable between a release position at which the opening and closing unit is opened and closed and a lock position at which the opening and closing unit is fixed to the main body unit; an opening and closing lever that is provided at a second end portion of the opening and closing unit opposite to a first end portion of the opening and closing unit coupled to the main body unit, is rotatable between the release position and the lock position, and has a locking portion that extends along a side surface of the opening and closing unit and is engaged with a side portion of the main body unit at the lock position; and an opening and closing sensor that is provided at the main body unit and detects that the opening and closing lever is positioned at the lock position.

[0013] Another embodiment of the present disclosure provides a printing device including: a printing unit that performs printing on a recording paper; a main body unit that supports a first portion of the printing unit; an opening and closing unit that is rotatably coupled to the main body unit with a rotation axis orthogonal to a width direction of the recording paper, supports a second portion of the printing unit; and an opening and closing lever that is provided at a second end portion of the opening and closing unit opposite to a first end portion of the opening and closing unit coupled to the main body unit, is rotatable between a release position at which the opening and closing unit is opened and closed and a lock position at which the opening and closing unit is fixed to the main body unit, and has a locking portion that extends along a side surface of the opening and closing unit and is engaged with a side portion of the main body unit at the lock position, and a lock release lever that extends toward the first end portion of the opening and closing unit at the lock position.

[0014] Effects of the Invention

[0015] According to the above-described embodiments of the present disclosure, it is possible to provide a printing device capable of detecting a half-locked state in which the opening and closing unit is not fixed to the main body unit in a state in which the opening and closing unit is closed with respect to the main body unit, and a printing device capable of releasing a locked state of the opening and closing unit with respect to the main body unit even in a limited space. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of the printing device of Embodiment 1.

[0017] Figure 2 is a perspective view of the main body unit and the opening and closing unit.

[0018] Figure 3 is a perspective view of the main body unit and the opening and closing unit.

[0019] Figure 4 is a perspective view of the opening and closing lever.

[0020] Figure 5 is a perspective view of the opening and closing lever.

[0021] Figure 6 is a perspective view of the main body portion.

[0022] Figure 7 is a sectional view of the main body portion.

[0023] Figure 8 is a perspective view of the main body portion and the opening and closing portion.

[0024] Figure 9 is a front view of the main body portion and the opening and closing portion.

[0025] Figure 10 is a sectional view of the main body portion and the opening and closing portion.

[0026] Figure 11 is a perspective view of the main body portion and the opening and closing portion of Modification 1.

[0027] Figure 12 is a perspective view of the main body portion and the opening and closing portion of Modification 2.

[0028] Figure 13 is a perspective view of the main body portion and the opening and closing portion of Modification 3.

[0029] Figure 14 is a sectional view of the main body portion and the opening and closing portion of Embodiment 2.

[0030] Figure 15 is a rear view of a printing device of a comparative example. DETAILED DESCRIPTION

[0031] Hereinafter, a mode for carrying out the present application will be described with reference to the drawings.

[0032] [Embodiment 1]

[0033] Figure 1 is a perspective view showing Embodiment 1 of a printing device of the present disclosure. Figure 2 and Figure 3 is Figure 1 is a perspective view of the main body portion 2 and the opening and closing portion 3 of the printing device 1 shown in FIG. 1. A three-dimensional rectangular coordinate system having an X axis parallel to a transport direction Df of the recording paper P, a Y axis parallel to a width direction of the recording paper P, and a Z axis parallel to a cutting direction Dc of the recording paper P is shown in each drawing.

[0034] The printing device 1 of the present embodiment is, for example, a thermal printer provided with a thermal print head 41h, and is used for a multimedia terminal (MMS) provided in a convenience store, a cash dispenser (CD), a cash dispenser (CD), a ticket vending machine, a cash register, or the like. The printing device 1, for example, transports the recording paper P which is a thermal paper, prints information such as characters and numbers on the recording paper P, and cuts the recording paper P, thereby outputting a recording paper sheet such as a ticket or a receipt.

[0035] The printing device 1 is provided with, for example, a main body portion 2, an opening and closing portion 3, a printing portion 4, a cutting portion 5, a base portion 6, and a recording paper stand 7. The main body portion 2 is, for example, a main frame fixed to the base portion 6, and the opening and closing portion 3, the printing portion 4, the cutting portion 5, and the like are installed.

[0036] The opening and closing portion 3 is, for example, an openable top portion disposed above a side of the main body portion 2 into which the recording paper is inserted. In Figure 2 , the opening and closing portion 3 disposed above the main body portion 2 is in a fully closed state, and in Figure 3 , the opening and closing portion 3 is in a fully open state. The opening and closing portion 3 has, for example, a rectangular planar shape with a width direction of the recording paper P as a length direction.

[0037] A rotation shaft 31 is provided at a first end portion 3E1 in the length direction of the opening and closing portion 3. The rotation shaft 31 penetrates a through hole provided in the main body portion 2, and is substantially parallel to a transport direction Df (X-axis direction) of the recording paper P and substantially orthogonal to a width direction (Y-axis direction) of the recording paper P and a cutting direction Dc (Z-axis direction). The opening and closing portion 3 is connected to the main body portion 2 so as to be rotatable about the rotation shaft 31, and is configured to be openable and closable with respect to the main body portion 2.

[0038] A torsion spring 31s as shown in Figure 2 , for example, is disposed around the rotation shaft 31. The torsion spring 31s has, for example, a first arm abutting against the main body portion 2 and a second arm abutting against the opening and closing portion 3, and applies a force to the opening and closing portion 3 in a direction in which the opening and closing portion 3 is opened with respect to the main body portion 2 in a state in which the opening and closing portion 3 is closed with respect to the main body portion 2. Thus, the opening and closing portion 3 can be easily opened from the state in which the opening and closing portion 3 is closed with respect to the main body portion 2, and it is possible to prevent the opening and closing portion 3 from being abruptly closed from the state in which the opening and closing portion 3 is opened with respect to the main body portion 2 as shown in Figure 3 .

[0039] An opening and closing lever 8 is provided at a second end portion 3E2 of the opening and closing portion 3 opposite the first end portion 3E1 connected to the main body portion 2. The opening and closing lever 8 is, for example, rotatably supported by a rotation shaft 32 provided in the opening and closing portion 3. Details will be described later, but the opening and closing lever 8 is rotatable between a release position at which the opening and closing portion 3 is openable and closable, and a lock position at which the opening and closing portion 3 is fixed to the main body portion 2. In addition, the opening and closing lever 8 also functions as a handle when the opening and closing portion 3 in the closed state as shown in Figure 1 and Figure 2 is opened like the opening and closing portion 3 as shown in Figure 3 .

[0040] Although not illustrated, a torsion spring can also be arranged around the rotation shaft 32 as with the rotation shaft 31. In this case, the torsion spring around the rotation shaft 32 can have a first arm that abuts against the opening and closing section 3 and a second arm that abuts against the opening and closing lever 8. Thereby, the torsion spring around the rotation shaft 32, for example, when the opening and closing lever 8 is in the release position, urges the opening and closing lever 8 about the shaft of the rotation shaft 32 to rotate the opening and closing lever 8 toward the lock position.

[0041] As Figure 3 illustrated, the printing section 4 includes a head unit 41 as a first portion that performs printing on the recording paper P and a platen unit 42 as a second portion that conveys the recording paper P. In the illustrated example, the head unit 41 is mounted to the main body section 2 as a main frame, for example, and the platen unit 42 is mounted to the opening and closing section 3, for example. That is, the main body section 2 supports the head unit 41 as the first portion of the printing section 4, and the opening and closing section 3 supports the platen unit 42 as the second portion of the printing section 4. A head frame 23 that supports the head unit 41 is provided to the main body section 2.

[0042] Further, although not illustrated, the arrangement of the head unit 41 and the platen unit 42 with respect to the main body section 2 and the opening and closing section 3 can also be reversed. That is, the main body section 2 can support the platen unit 42 as the first portion of the printing section 4, and the opening and closing section 3 can support the head unit 41 as the second portion of the printing section 4. In this case, a head frame similar to the head frame 23 provided to the main body section 2 is provided to the opening and closing section 3 that supports the head unit 41.

[0043] The head unit 41 includes a thermal print head 41h as a print head, for example, and the platen unit 42 includes a platen roller 42r that conveys the recording paper P.

[0044] A motor and a gear or the like that rotates the platen roller 42r of the platen unit 42 is mounted to the main body section 2, for example. The printing device 1 connects the gear provided to the platen roller 42r and the gear of the conveyance drive system mounted to the main body section 2 by closing the opening and closing section 3, for example. The printing section 4 conveys the recording paper P inserted between the head unit 41 and the platen unit 42 in the conveyance direction Df by the platen roller 42r and performs printing on the recording paper P by the thermal print head 41h, for example.

[0045] The cutting section 5 has a fixed blade 51 supported to the opening and closing section 3 and a movable blade 52 arranged adjacent to the fixed blade 51 in the conveyance direction Df of the recording paper P and supported to the main body section 2, for example. The movable blade 52 is arranged adjacent to the fixed blade 51 on the front side of the fixed blade 51 in the conveyance direction Df of the recording paper P, for example. In addition, the cutting section 5 has a cutter drive section 53 that supports the movable blade 52 and moves it up and down. In addition, as will be described later in detail, the cutting section 5 has a biasing section 54 that urges the fixed blade 51 toward the movable blade 52 (see Figure 10 ).

[0046] As shown in Figure 3 , the fixed blade 51 is disposed along the length direction of the rectangular opening and closing section 3, for example, and is supported to the opening and closing section 3. The fixed blade 51 has an elongated shape extending in the width direction of the recording paper P. That is, the length direction of the fixed blade 51 coincides with the length direction of the opening and closing section 3. The movable blade 52 is supported to the main body section 2 by mounting the cutting section 5 to the main body section 2. The movable blade 52 is provided to be movable along the action direction, that is, the cutting direction Dc which is substantially orthogonal to the transport direction Df of the recording paper P, by the cutter driving section 53.

[0047] The cutter driving section 53 is connected to a motor and a gear, for example, at all times. The cutter driving section 53 includes a motor, a gear, a link mechanism, and the like mounted to the main body section 2, for example, and reciprocally moves the movable blade 52 along the cutting direction Dc and the opposite direction thereof by driving the motor. The cutter driving section 53 causes the movable blade 52 to act between a standby position before the start of the cutting of the recording paper P and a completion position at which the cutting of the recording paper P is completed, for example.

[0048] The cutting section 5 reciprocally moves the movable blade 52 along the cutting direction Dc of the recording paper P by the cutter driving section 53 in a state where the fixed blade 51 supported to the opening and closing section 3 is urged toward the movable blade 52 by the urging section 54. Thereby, the cutting section 5 cuts the recording paper P on which printing has been performed by the printing section 4 between the fixed blade 51 and the movable blade 52.

[0049] As shown in Figure 1 , the base section 6 is a rectangular plate-like member which becomes a base of the printing device 1, for example. On the base section 6, the main body section 2 and the recording paper holder 7 are adjacently disposed and fixed to the base section 6. The recording paper holder 7 rotatably supports the recording paper P as a web and continuously feeds the recording paper P to between the head unit 41 and the platen unit 42 of the printing section 4, for example.

[0050] The printing device 1 of the present embodiment has a feature in a structure in which, as shown in Figure 2 , the opening and closing lever 8 detects the locked position of the opening and closing lever 8 which fixes the opening and closing section 3 to the main body section 2 in a state where the opening and closing section 3 is closed with respect to the main body section 2. In addition, the printing device 1 of the present embodiment has a feature in a structure in which, as shown in Figure 2 , even if there is not enough space for a user to put a hand around the opening and closing section 3, it is possible to release the locked state of the opening and closing section 3 in which the opening and closing lever 8 is in the locked position in a state where the opening and closing section 3 is closed with respect to the main body section 2.

[0051] Hereinafter, the characteristic structure of the printing device 1 of the present embodiment will be described in detail with reference to Figure 4 to Figure 10 . Figure 4 and Figure 5 are perspective views of the opening and closing lever 8. Figure 6is a side view of the side portion of the main body 2 to which the opening / closing lever 8 is engaged. Figure 7 is a sectional view of the main body 2 along the line VII-VII of Figure 6 .

[0052] As shown in Figure 4 and Figure 5 , the opening / closing lever 8 has an engagement portion 81. In addition, the opening / closing lever 8 can also have a handle portion 82 and a shaft support portion 83. In addition, the opening / closing lever 8 can also have a lock release lever 84, and can also have an extension portion 85. In addition, as shown in Figure 6 and Figure 7 , the printing device 1 is provided with an opening / closing sensor 9 that is provided to the main body 2 and detects that the opening / closing lever 8 is positioned at the locked position.

[0053] The engagement portion 81 extends along the side surface of the opening / closing portion 3 at the locked position of the opening / closing lever 8 shown in the left drawing of Figure 7 , and is engaged with the side portion of the main body 2. Specifically, as shown in Figure 2 and Figure 5 , the opening / closing lever 8 has, for example, a pair of engagement portions 81 that are provided at both ends in the length direction of the handle portion 82 along the second end portion 3E2 of the opening / closing portion 3. In addition, the pair of engagement portions 81 are connected by a flat plate-shaped reinforcing portion 81b. Each engagement portion 81, for example, has a claw 81c provided to the front end portion that is adjacent to the side portion of the main body 2, which is hooked to the shaft portion 21 provided to the side portion of the main body 2 shown in Figure 6 , at the locked position of the opening / closing lever 8, thereby being engaged with the side portion of the main body 2.

[0054] In the example shown in Figure 6 , the shaft portion 21 to which the claw 81c of the engagement portion 81 of the opening / closing lever 8 is engaged is provided between the gear box main body 24e of the gear box 24 provided to the side portion of the main body 2 and the frame end wall 24f. The gear box main body 24e, for example, houses a conveyance gear that engages with a gear of a platen roller 42r of a platen unit 42 when the opening / closing portion 3 is closed with respect to the main body 2. The frame end wall 24f of the gear box 24 extends substantially symmetrically to the front side and the rear side of the upper end portion of the gear box 24 in the conveyance direction Df of the recording paper P, and has a shape that is L-shaped when viewed from the side. Each shaft portion 21 has a cylindrical shape in which the center axis is substantially parallel to the conveyance direction Df of the recording paper P. One end of the shaft portion 21 is connected to the gear box main body 24e, and the other end of the shaft portion 21 is connected to the frame end wall 24f.

[0055] As shown in Figure 2 and Figure 4As shown, the handle portion 82 is located at the base end of the engaging portion 81 adjacent to the opening / closing portion 3, and protrudes away from the side of the closing portion 3 at the locked position of the opening / closing lever 8. At the locked position of the opening / closing lever 8, the protruding direction of the handle portion 82 is in the width direction (Y-axis direction) of the recording paper P, and is approximately orthogonal to the length direction of the engaging portion 81 extending in the cutting direction (Z-axis direction) of the recording paper P. Figure 4 and Figure 5 As shown, a protrusion 82p is provided at the front end of the handle portion 82 in the protruding direction, protruding toward the front end of the engaging portion 81. Thus, when the user of the printing device 1 lifts the handle portion 82 by hand, he can hold the handle portion 82 and rest his fingers on the protrusion 82p.

[0056] like Figure 5 As shown, the shaft support 83 protrudes from the base end of the engaging portion 81 in the opposite direction to the handle portion 82 and is axially supported on the opening / closing portion 3. Specifically, the opening / closing lever 8 has, for example, a pair of shaft supports 83, which are arranged along the... Figure 2 The handle portion 82 of the second end 3E2 of the opening / closing portion 3 shown is located on both sides along its length. Each shaft support 83 has a through hole 83a through which a rotating shaft 32 provided at the second end 3E2 of the opening / closing portion 3 passes. A pair of shaft supports 83 are rotatably supported on the opening / closing portion 3, for example, by allowing the rotating shaft 32 provided at the opening / closing portion 3 to pass through the through hole 83a provided in each shaft support 83.

[0057] like Figure 2 As shown, the locking release lever 84 extends toward the first end 3E1 of the opening / closing portion 3, for example, at the locked position of the opening / closing lever 8. Additionally, the locking release lever 84 extends, for example, along the upper surface of the opening / closing portion 3, on the side opposite to the main body 2. Specifically, at the locked position of the opening / closing lever 8, the locking release lever 84 extends from the second end 3E2 of the opening / closing portion 3 toward the first end 3E1 along the upper surface of the cover 33 of the opening / closing portion 3.

[0058] exist Figure 2 In the example shown, the cover 33 of the opening / closing part 3 has a cutout 34 that follows the shape of the locking release lever 84. The locking release lever 84, in the locked position of the opening / closing lever 8, is housed in the cutout 34 of the cover 33 of the opening / closing part 3, and extends along the upper surface of the cover 33 in the width direction (Y-axis direction) of the recording paper P. Figure 2 and Figure 7 In the example shown in the left figure, at the locked position of the opening / closing lever 8, at least a portion of the locking release lever 84 protrudes from the end face of the opening / closing part 3 on the side opposite to the main body part 2.

[0059] Specifically, in Figure 2 and Figure 7In the example shown in the left figure, a portion of the locking release lever 84 protrudes from the end face of the opening / closing part 3 opposite to the main body 2, i.e., the upper surface of the opening / closing part 3. Specifically, in the locked position of the opening / closing lever 8, one end of the locking release lever 84 in the cutting direction Dc (Z-axis direction) of the recording paper P protrudes upward (outside the cover 33) from the base end to the front end of the locking release lever 84 extending in the width direction (Y-axis direction) of the recording paper P.

[0060] like Figure 7 As shown in the left figure, the extension 85 extends along the side of the opening / closing part 3 and the main body 2 at the locked position of the opening / closing lever 8, to a position further away from the closing part 3 than the engaging part 81. Figure 4 and Figure 5 As shown, the extension 85 has a protrusion 85c at its front end. The protrusion 85c is configured to... Figure 7 In the locked position of the opening / closing lever 8 shown in the left figure, it protrudes towards the side of the main body 2 than the other parts of the extension 85. The top surface of the protrusion 85c facing the side of the main body 2 at the locked position of the opening / closing lever 8 is a plane that is approximately perpendicular to the width direction (Y-axis direction) of the recording paper P.

[0061] In addition, such as Figure 4 As shown, the extension 85, for example, has a rib 85r that protrudes from the side opposite to the surface where the protrusion 85c is located, in the opposite direction to the protrusion 85c. The rib 85r extends, for example, from the base end of the extension 85 connected to the handle portion 82 to the front end of the extension 85. The height of the rib 85r in the protruding direction increases closer to the base end of the extension 85. The rib 85r increases the rigidity of the extension 85 relative to the force acting on the protrusion 85c at the front end of the extension 85 in the protruding direction of the rib 85r.

[0062] In addition, Figure 6 In the example shown, the opening / closing sensor 9, which detects the locking position of the opening / closing lever 8, is mounted on the circuit board 93 and the support plate 25 is mounted on the side of the main body 2. The support plate 25 is, for example, a plate-shaped member that is substantially parallel to the width direction (Y-axis direction) and cutting direction Dc (Z-axis direction) of the recording paper P, and is mounted on the side wall of the main body 2. The circuit board 93 is mounted in such a way that it is sandwiched between the frame end wall 24f of the gearbox 24 and the support plate 25.

[0063] The opening / closing sensor 9 detects, for example, that the opening / closing lever 8 is in the locked position based on the position of the side of the extension 85 facing the main body 2. Specifically, for example, as... Figure 7 As shown in the left figure, the opening / closing sensor 9 has a plunger 92 that detects the locked position of the opening / closing lever 8 by pushing it into the locked position. Furthermore, the plunger 92 protrudes, for example, from the side of the extension 85 facing the main body 2 at the locked position of the opening / closing lever 8.

[0064] More specifically, as shown in Figure 6 , the opening / closing sensor 9 has, for example, a substantially rectangular parallelepiped-shaped main body portion 91 and a plunger 92 that protrudes from the main body portion 91 to the outside in the width direction of the recording paper P. The main body portion 91 is mounted to a circuit board 93. The plunger 92 is, for example, urged to the outside in the width direction of the recording paper P by a spring inside the main body portion 91 and opens a switch that is electrically connected to the circuit board 93 by being pushed into the main body portion 91. The circuit board 93 has, for example, a circuit that detects the locked position of the opening / closing lever 8 by the switch being opened by the plunger 92.

[0065] As shown in Figure 6 , the support plate 25 has, for example, a guide portion 25g that protrudes toward the outside in the width direction (Y-axis direction) of the recording paper P at the central portion in the cutting direction Dc (Z-axis direction) of the recording paper P. The surface of the guide portion 25g that faces the opening / closing sensor 9 is inclined so as to be farther away from the opening / closing sensor 9 the farther it is to the outside in the width direction of the recording paper P. Thus, the guide portion 25g guides the extension portion 85 so as to be directly opposite the end surface of the main body portion 91 from which the plunger 92 protrudes when the opening / closing lever 8 is turned from the released position to the locked position, so that the plunger 92 of the opening / closing sensor 9 can be reliably pushed in by the extension portion 85.

[0066] In addition, in the printing device 1 of the present embodiment, the opening / closing lever 8 has a function of eliminating a jam. A jam is a problem in which the movable blade 52 cannot operate because the recording paper P is jammed between the fixed blade 51 and the movable blade 52 when the recording paper P is cut by the cutting portion 5. Hereinafter, the function of eliminating a jam that is achieved by the opening / closing lever 8 of the printing device 1 of the present embodiment will be described with reference to Figure 8 to Figure 10

[0067] Figure 8 is a perspective view of the main body portion 2 and the opening / closing portion 3 with the cover 33 of the opening / closing portion 3 removed. Figure 9 is a front view of the vicinity of the opening / closing lever 8 of the main body portion 2 and the opening / closing portion 3 that shows the operation of the opening / closing lever 8. Figure 10 is a sectional view of the main body portion 2 and the opening / closing portion 3 along the X-X line of Figure 9

[0068] In the printing device 1 of the present embodiment, the fixed blade 51 of the cutting portion 5 is supported so as to be swingable by the opening / closing portion 3. Specifically, as shown in Figure 8 , the fixed blade 51 has a tongue-shaped protruding portion 51p at the end edge in the length direction on the opposite side of the movable blade 52 in the cutting direction Dc (Z-axis direction) of the recording paper P. The fixed blade 51 has, for example, a pair of protruding portions 51p between the both end portions and the central portion in the length direction.

[0069] As shown in Figure 2 ​​As shown, the protruding portion 51p of the fixed blade 51 is inserted into the through-hole 35 provided in the cover 33 of the opening and closing portion 3. A gap in the transport direction Df of the recording paper P is formed between the through-hole 35 of the opening and closing portion 3 and the protruding portion 51p of the fixed blade 51. Further, as shown in the left drawing of FIG. 17, the protruding portion 36 of the opening and closing portion 3 is inserted into the through-hole 51a of the fixed blade 51. The protruding portion 36 is provided in the opening and closing portion 3 and protrudes toward the front in the transport direction Df of the recording paper P. A gap in the cutting direction Dc of the recording paper P is formed between the through-hole 51a of the fixed blade 51 and the protruding portion 36 of the opening and closing portion 3. Figure 8 As shown, the fixed blade 51 has a through-hole 51a in the vicinity of the protruding portion 51p. The protruding portion 36 of the opening and closing portion 3 is inserted into the through-hole 51a of the fixed blade 51. The protruding portion 36 is provided in the opening and closing portion 3 and protrudes toward the front in the transport direction Df of the recording paper P. A gap in the cutting direction Dc of the recording paper P is formed between the through-hole 51a of the fixed blade 51 and the protruding portion 36 of the opening and closing portion 3.

[0070] Further, as shown in the left drawing of FIG. 17, the protruding portion 36 of the opening and closing portion 3 is inserted into the through-hole 51a of the fixed blade 51. The protruding portion 36 is provided in the opening and closing portion 3 and protrudes toward the front in the transport direction Df of the recording paper P. A gap in the cutting direction Dc of the recording paper P is formed between the through-hole 51a of the fixed blade 51 and the protruding portion 36 of the opening and closing portion 3. Figure 10 As shown in the left drawing of FIG. 17, the protruding portion 36 of the opening and closing portion 3 is inserted into the through-hole 51a of the fixed blade 51. The protruding portion 36 is provided in the opening and closing portion 3 and protrudes toward the front in the transport direction Df of the recording paper P. A gap in the cutting direction Dc of the recording paper P is formed between the through-hole 51a of the fixed blade 51 and the protruding portion 36 of the opening and closing portion 3.

[0071] By this structure, the fixed blade 51 is supported by the opening and closing portion 3 so as to be able to swing. As shown in the left drawing of FIG. 17, in a state in which no force is acting toward the rear in the transport direction Df of the recording paper P, the fixed blade 51 is urged by the urging portion 54 toward the front in the transport direction Df of the recording paper P and is disposed in a stable position in which the recording paper P can be cut. On the other hand, when a force greater than the urging force of the urging portion 54 is acting toward the rear in the transport direction Df of the recording paper P, as shown in the right drawing of FIG. 17, the fixed blade 51 swings with the through-hole 35 of the opening and closing portion 3 as a fulcrum, with the leading end portion thereof swinging toward the rear in the transport direction Df of the recording paper P. Figure 10 Figure 2 Figure 10 As shown in the left drawing of FIG. 17, in a state in which no force is acting toward the rear in the transport direction Df of the recording paper P, the fixed blade 51 is urged by the urging portion 54 toward the front in the transport direction Df of the recording paper P and is disposed in a stable position in which the recording paper P can be cut. On the other hand, when a force greater than the urging force of the urging portion 54 is acting toward the rear in the transport direction Df of the recording paper P, as shown in the right drawing of FIG. 17, the fixed blade 51 swings with the through-hole 35 of the opening and closing portion 3 as a fulcrum, with the leading end portion thereof swinging toward the rear in the transport direction Df of the recording paper P.

[0072] As shown in the left drawing of FIG. 17, in a state in which no force is acting toward the rear in the transport direction Df of the recording paper P, the fixed blade 51 is urged by the urging portion 54 toward the front in the transport direction Df of the recording paper P and is disposed in a stable position in which the recording paper P can be cut. On the other hand, when a force greater than the urging force of the urging portion 54 is acting toward the rear in the transport direction Df of the recording paper P, as shown in the right drawing of FIG. 17, the fixed blade 51 swings with the through-hole 35 of the opening and closing portion 3 as a fulcrum, with the leading end portion thereof swinging toward the rear in the transport direction Df of the recording paper P. Figure 9 Figure 10 As shown in the left drawing of FIG. 17, in a state in which no force is acting toward the rear in the transport direction Df of the recording paper P, the fixed blade 51 is urged by the urging portion 54 toward the front in the transport direction Df of the recording paper P and is disposed in a stable position in which the recording paper P can be cut. On the other hand, when a force greater than the urging force of the urging portion 54 is acting toward the rear in the transport direction Df of the recording paper P, as shown in the right drawing of FIG. 17, the fixed blade 51 swings with the through-hole 35 of the opening and closing portion 3 as a fulcrum, with the leading end portion thereof swinging toward the rear in the transport direction Df of the recording paper P. Figure 10 Figure 8 Figure 9 As shown in the left drawing of FIG. 17, in a state in which no force is acting toward the rear in the transport direction Df of the recording paper P, the fixed blade 51 is urged by the urging portion 54 toward the front in the transport direction Df of the recording paper P and is disposed in a stable position in which the recording paper P can be cut. On the other hand, when a force greater than the urging force of the urging portion 54 is acting toward the rear in the transport direction Df of the recording paper P, as shown in the right drawing of FIG. 17, the fixed blade 51 swings with the through-hole 35 of the opening and closing portion 3 as a fulcrum, with the leading end portion thereof swinging toward the rear in the transport direction Df of the recording paper P. Figure 10 ​​​​​The upper side in front of the fixed blade 51 shown in the left figure does not contact the fixed blade 51. On the other hand, when the opening / closing lever 8 is rotated from the locked position to the released position, as shown in the left figure... Figure 9 The right image and Figure 10 As shown in the right figure, the locking release lever 84 rotates toward the movable blade 52 in the cutting direction Dc of the recording paper P, and is positioned to the paper release position.

[0073] Lock release lever 84 Figure 10 At the paper release position shown in the right figure, the fixed blade 51 is swung in the direction of arrow A2 by pushing it against the force applied by the force-applying part 54, causing the front end of the fixed blade 51 to move away from the movable blade 52. Here, the direction of arrow A2, in which the locking release lever 84 moves the fixed blade 51 away from the movable blade 52, is... Figure 10 The direction of force application of the force-applying part 54 shown in the left figure is the opposite direction of arrow A1. Thus, the locking release lever 84... Figure 9 The right image and Figure 10 The release position of the opening / closing lever 8 shown in the right figure is configured at the paper release position where the fixed blade 51 is moved away from the movable blade 52 in the opposite direction to the force application direction of the force application part 54.

[0074] Hereinafter, the operation of the printing apparatus 1 of this embodiment will be explained based on a comparison with a comparative example of a printing apparatus different from that disclosed herein.

[0075] Figure 15 This is an enlarged rear view of a portion of the main body C2 and the opening / closing part C3 of the comparative example printing apparatus. The comparative example printing apparatus differs from the printing apparatus 1 of this embodiment mainly in that the opening / closing sensor C9 is located at the upper end of the main body C2 facing the opening / closing part C3, and that the opening / closing lever C8 lacks a locking release lever 84 and an extension 85. The other structural features of the comparative example printing apparatus are the same as those of the printing apparatus 1 of this embodiment.

[0076] like Figure 15 As shown in the left figure, in the comparative example printing apparatus, the opening / closing sensor C9 detects that the opening / closing part C3 is open when the opening / closing part C3 is not closed relative to the main body C2 and the plunger C92 of the opening / closing sensor C9 is not pushed in. Furthermore, as... Figure 15 As shown in the right figure, in the comparative example printing apparatus, the opening / closing sensor C9 detects that the opening / closing part C3 is closed when the opening / closing part C3 is closed relative to the main body C2 and the plunger C92 of the opening / closing sensor C9 is pushed in by the opening / closing part C3. However, the opening / closing sensor C9 of the comparative example printing apparatus cannot detect the semi-locked state where the opening / closing rod C8 is not engaged with the side of the main body C2.

[0077] On the other hand, the printing device 1 of the present embodiment has the printing section 4, the main body section 2, the opening and closing section 3, the opening and closing lever 8, and the opening and closing sensor 9 as described above. The printing section 4 prints information such as characters and numbers on the recording paper P. The main body section 2 supports the head unit 41 as the first part of the printing section 4. The opening and closing section 3 is rotatably connected to the main body section 2 with a rotation shaft 31 orthogonal to the width direction of the recording paper P as a center, and supports the platen unit 42 as the second part of the printing section 4. The opening and closing lever 8 is provided at a second end portion 3E2 of the opening and closing section 3 opposite to a first end portion 3E1 connected to the main body section 2, and is rotatable between a release position at which the opening and closing section 3 is opened and closed, and a lock position at which the opening and closing section 3 is fixed to the main body section 2. The opening and closing sensor 9 is provided to the main body section 2, and detects that the opening and closing lever 8 is at the lock position.

[0078] With such a configuration, by opening the opening and closing section 3 with respect to the main body section 2 as shown in Figure 3 , and rotating the opening and closing lever 8 from the release position to the lock position as shown in Figure 2 , the opening and closing section 3 can be fixed to the main body section 2. At this time, as shown in the right drawing of Figure 7 , the opening and closing lever 8 at the release position is rotated to the lock position shown in the left drawing of Figure 7 , and the opening and closing sensor 9 detects that the opening and closing lever 8 is at the lock position. In other words, in a half-locked state in which the opening and closing lever 8 is not at the lock position in a state in which the opening and closing section 3 is closed with respect to the main body section 2, the opening and closing sensor 9 detects that the opening and closing lever 8 is at the release position. Therefore, with the printing device 1 of the present embodiment, based on the detection result of the opening and closing sensor 9, it is possible to detect a half-locked state in which the opening and closing section 3 is not fixed to the main body section 2 in a state in which the opening and closing section 3 is closed with respect to the main body section 2.

[0079] Further, in the printing device 1 of the present embodiment, the opening and closing sensor 9 has a plunger 92 that detects the lock position of the opening and closing lever 8 by being pushed in by the opening and closing lever 8 at the lock position. With such a configuration, it is possible to detect that the opening and closing lever 8 is at the lock position using the simple plunger-type opening and closing sensor 9. Therefore, it is possible to suppress the component cost of the printing device 1, and to simplify the configuration of the printing device 1.

[0080] Further, in the printing device 1 of the present embodiment, the opening and closing lever 8 has an engaging portion 81 and an extension portion 85. The engaging portion 81 extends along the side surface of the opening and closing section 3 and engages with the side portion of the main body section 2 at the lock position of the opening and closing lever 8. The extension portion 85 extends along the side surface of the opening and closing section 3 to a position farther from the opening and closing section 3 than the engaging portion 81 at the lock position of the opening and closing lever 8. Further, the opening and closing sensor 9 detects that the opening and closing lever 8 is at the lock position based on the position of the side surface of the extension portion 85 facing the main body section 2.

[0081] With such a structure, it is possible to prevent the detection of the open / close lever 8 being in the locked position before the engaging portion 81 of the open / close lever 8 engages with the side portion of the main body portion 2, that is, it is possible to prevent the false detection of the open / close sensor 9. In more detail, at the locked position of the open / close lever 8 shown in the left drawing of FIG. 10, the extension portion 85 extends along the side surface of the open / close portion 3 and the side surface of the main body portion 2 to a position farther from the open / close portion 3 than the engaging portion 81. Therefore, at the time when the open / close lever 8 is rotated to the locked position so that the engaging portion 81 engages with the side portion of the main body portion 2 or after that, the open / close sensor 9 detects that the open / close lever 8 is in the locked position depending on the position of the side surface of the extension portion 85. Thus, it is possible to more reliably detect that the open / close lever 8 is in the locked position by the open / close sensor 9. Therefore, according to the printing device 1 of the present embodiment, it is possible to more reliably detect that the open / close portion 3 is in the half-locked state shown in the right drawing of FIG. 10 in which the open / close lever 8 is in the released position in the state in which the open / close portion 3 is closed with respect to the main body portion 2. Figure 7 Figure 7

[0082] In more detail, the plunger 92 of the open / close sensor 9 protrudes toward the side surface of the extension portion 85 facing the main body portion 2 at the locked position of the open / close lever 8. Thus, it is possible to prevent the plunger 92 of the open / close sensor 9 from being pushed in before the engaging portion 81 of the open / close lever 8 engages with the side portion of the main body portion 2. In more detail, at the locked position of the open / close lever 8 shown in the left drawing of FIG. 10, the extension portion 85 extends along the side surface of the open / close portion 3 and the side surface of the main body portion 2 to a position farther from the open / close portion 3 than the engaging portion 81. Therefore, at the time when the open / close lever 8 is rotated to the locked position so that the engaging portion 81 engages with the side portion of the main body portion 2 or after that, it is possible to push the plunger 92 of the open / close sensor 9 in to the end by the extension portion 85. Thus, it is possible to more reliably detect that the open / close lever 8 is in the locked position by the open / close sensor 9. Therefore, according to the printing device 1 of the present embodiment, it is possible to more reliably detect that the open / close portion 3 is in the half-locked state shown in the right drawing of FIG. 10 in which the open / close lever 8 is in the released position in the state in which the open / close portion 3 is closed with respect to the main body portion 2. Figure 7 Figure 7

[0083] In addition, the open / close lever 8 of the printing device 1 of the present embodiment has a lock release lever 84 extending toward the first end portion 3E1 of the open / close portion 3 at the locked position.

[0084] With such a structure, for example, even in the case where the printing device 1 is housed in a frame and there is not enough space for a user of the printing device 1 to put his / her hand around the open / close lever 8, it is possible to push the lock release lever 84 toward the main body portion 2 to rotate the open / close lever 8 from the locked position to the released position. In more detail, by pushing the lock release lever 84 of the open / close lever 8 in the locked position shown in the left drawing of FIG. 11 toward the main body portion 2, the open / close lever 8 is rotated to the released position as shown in the right drawing of FIG. 11. Figure 7 Figure 7 ​​​​​As shown in the right view of FIG. 1, the opening and closing lever 8 is rotated from the locked position to the released position, thereby enabling the opening and closing section 3 to be opened with respect to the main body section 2.

[0085] In addition, in the printing device 1 of the present embodiment, at least a portion of the lock release lever 84 of the opening and closing lever 8 protrudes from an end surface of the opening and closing section 3 on the side opposite the main body section 2 at the locked position.

[0086] With such a configuration, the user of the printing device 1 can visually understand that the opening and closing lever 8 is rotated from the locked position to the released position by pushing the lock release lever 84 toward the main body section 2. In addition, the user of the printing device 1 can more easily rotate the opening and closing lever 8 from the locked position to the released position by pushing the lock release lever 84 protruding from the end surface of the opening and closing section 3 on the side opposite the main body section 2 toward the main body section 2.

[0087] In addition, in the printing device 1 of the present embodiment, the lock release lever 84 of the opening and closing lever 8 is disposed at an end portion of the opening and closing section 3 on the front side in the conveyance direction Df of the recording paper P, but can also be disposed at an end portion of the opening and closing section 3 on the rear side in the conveyance direction Df of the recording paper P. With such a configuration, it is possible to improve the degree of freedom in the design of the printing device 1.

[0088] In addition, the printing device 1 of the present embodiment further includes a cutting section 5 that cuts the recording paper P. The cutting section 5 includes a fixed blade 51 supported by the opening and closing section 3, a movable blade 52 disposed adjacent to the fixed blade 51 in the conveyance direction Df of the recording paper P and supported by the main body section 2, and a biasing section 54 that biases the fixed blade 51 toward the movable blade 52. The lock release lever 84 of the opening and closing lever 8 is disposed at a stable position on the biasing direction side of the fixed blade 51 with respect to the biasing section 54 at the locked position of the opening and closing lever 8. In addition, the lock release lever 84 of the opening and closing lever 8 is disposed at a paper release position that separates the fixed blade 51 from the movable blade 52 in a direction opposite the biasing direction of the biasing section 54 at the released position of the opening and closing lever 8.

[0089] With such a configuration, as shown in FIG. 6, by moving the opening and closing lever 8 from the locked position to the released position, as shown in FIG. 7, it is possible to separate the fixed blade 51 from the movable blade 52 by the lock release lever 84. Thus, in the event of a jam in which the recording paper P is jammed between the fixed blade 51 and the movable blade 52, such that the movable blade 52 cannot operate, it is possible to move the opening and closing lever 8 from the locked position to the released position to separate the fixed blade 51 from the movable blade 52, thereby eliminating the jam. Figure 9 Figure 10

[0090] ​​In addition, the printing device 1 of the present embodiment includes the printing section 4, the main body section 2, the opening and closing section 3, and the opening and closing lever 8. The printing section 4 prints information such as characters and numbers on the recording paper P. The main body section 2 supports the head unit 41 as the first part of the printing section 4. The opening and closing section 3 is rotatably connected to the main body section 2 about the rotation shaft 31 orthogonal to the width direction of the recording paper P, and supports the platen unit 42 as the second part of the printing section 4. The opening and closing lever 8 is provided at the second end portion 3E2 opposite to the first end portion 3E1 of the opening and closing section 3 connected to the main body section 2, and is rotatable between a release position at which the opening and closing section 3 is allowed to open and close, and a lock position at which the opening and closing section 3 is fixed to the main body section 2. The opening and closing lever 8 has an engagement portion 81 extending along the side surface of the opening and closing section 3 and engaged with the side portion of the main body section 2 at the lock position, and a lock release lever 84 extending toward the first end portion 3E1 of the opening and closing section 3 at the lock position.

[0091] With such a structure, for example, even in a case where the printing device 1 is housed in a frame and there is not enough space for a user of the printing device 1 to put his or her hand around the opening and closing lever 8, the lock release lever 84 can be pushed toward the main body section 2 to rotate the opening and closing lever 8 from the lock position to the release position. Specifically, by pushing the lock release lever 84 of the opening and closing lever 8 at the lock position toward the main body section 2 as shown in the left drawing of FIG. 8, the opening and closing lever 8 is rotated from the lock position to the release position as shown in the right drawing of FIG. 8, and thus the opening and closing section 3 can be opened with respect to the main body section 2. Therefore, according to the printing device 1 of the present embodiment, the locked state of the opening and closing section 3 with respect to the main body section 2 can be released even in a limited space. Figure 7 Figure 7 With such a structure, for example, even in a case where the printing device 1 is housed in a frame and there is not enough space for a user of the printing device 1 to put his or her hand around the opening and closing lever 8, the lock release lever 84 can be pushed toward the main body section 2 to rotate the opening and closing lever 8 from the lock position to the release position. Specifically, by pushing the lock release lever 84 of the opening and closing lever 8 at the lock position toward the main body section 2 as shown in the left drawing of FIG. 8, the opening and closing lever 8 is rotated from the lock position to the release position as shown in the right drawing of FIG. 8, and thus the opening and closing section 3 can be opened with respect to the main body section 2. Therefore, according to the printing device 1 of the present embodiment, the locked state of the opening and closing section 3 with respect to the main body section 2 can be released even in a limited space.

[0092] As described above, according to the present embodiment, it is possible to provide a printing device 1 capable of detecting a half-locked state in which the opening and closing section 3 that is rotatably connected to the main body section 2 is not fixed to the main body section 2 in a closed state of the opening and closing section 3 with respect to the main body section 2. In addition, according to the present embodiment, it is possible to provide a printing device 1 in which the locked state of the opening and closing section 3 with respect to the main body section 2 can be released even in a limited space.

[0093] Further, the printing device 1 of the present embodiment is not limited to the above-described structure. Hereinafter, modified examples of the printing device 1 of the present embodiment will be described. Figure 11 Figure 12 are perspective views of the main body section 2 and the opening and closing section 3 of the modified example 1 and the modified example 2 of the printing device 1, respectively. In these modified examples, a protrusion 84b protruding from the end surface of the opening and closing section 3 on the side opposite to the main body section 2 is provided at the front end portion of the lock release lever 84 of the opening and closing lever 8.

[0094] Specifically, in the modified example 1 of the printing device 1, the protrusion 84b of the lock release lever 84 is engaged with the end surface of the opening and closing section 3 on the side opposite to the main body section 2 at the lock position, and the lock release lever 84 is rotated about the protrusion 84b to release the locked state of the opening and closing section 3 with respect to the main body section 2. Figure 11 Figure 12 ​​​In the example shown, in the lock release lever 84 when the opening and closing lever 8 is in the locked position, only the protrusion 84b protrudes from the end surface of the opening and closing portion 3 on the side opposite the main body portion 2, that is, the upper surface of the cover 33. Also, the end surface of the lock release lever 84 on the side opposite the main body portion 2 other than the protrusion 84b is flush with the upper surface of the cover 33 in a state where the lock release lever 84 is housed in the cutout portion 34 of the cover 33 without a height difference.

[0095] In Figure 11 In the example shown, the protrusion 84b is rectangular in shape when viewed from the direction perpendicular to the upper surface of the cover 33. Also, in Figure 12 In the example shown, the protrusion 84b is oblong or racetrack-shaped with rounded corners at both ends in the length direction of the lock release lever 84 and a straight portion therebetween when viewed from the direction perpendicular to the upper surface of the cover 33. Further, the shape of the protrusion 84b is not particularly limited.

[0096] In this way, by providing the protrusion 84b protruding from the end surface of the opening and closing portion 3 on the side opposite the main body portion 2 at the front end portion of the lock release lever 84, the user of the printing device 1 can press the protrusion 84b to rotate the opening and closing lever 8 from the locked position to the released position. Thereby, not only does the operation of rotating the opening and closing lever 8 to release the locked state of the opening and closing portion 3 fixed to the main body portion 2 become easy, but also the user can visually understand that the protrusion 84b can be pressed to release the locked state of the opening and closing portion 3. Also, by not having the portion other than the protrusion 84b protrude from the end surface of the opening and closing portion 3 on the side opposite the main body portion 2, it is possible to suppress erroneous operation of the opening and closing lever 8 and to suppress the locked state of the opening and closing portion 3 from being released by mistake.

[0097] Figure 13 is a perspective view of the main body portion 2 and the opening and closing portion 3 of a modification 3 of the printing device 1 of the present embodiment. In the printing device 1 of the present embodiment, as shown in Figure 6 The opening and closing sensor 9 is provided on the side portion of the main body portion 2 on the rear side in the conveyance direction Df of the recording paper P, as shown in Figure 8 The opening and closing lever 8 has an extension portion 85 on the rear side in the conveyance direction Df of the recording paper P, as shown in

[0098] However, in the printing device 1 of the modification 3 shown in Figure 13 In the printing device 1 of the modification 3 shown in

[0099] [Embodiment 2]

[0100] Hereinafter, theFigure 14 This describes Embodiment 2 of the printing apparatus of this disclosure. Figure 14 This is an enlarged cross-sectional view of a portion of the main body 2 and the opening / closing part 3 of Embodiment 2 of the printing apparatus of this disclosure.

[0101] The printing apparatus 1 of this embodiment differs from the printing apparatus 1 of Embodiment 1 in that the opening / closing lever 8 does not have an extension 85 and the plunger 92 of the opening / closing sensor 9 protrudes toward the upper surface of the main body 2 facing the opening / closing part 3 in the cutting direction Dc of the recording paper P. The other structures of the printing apparatus 1 of this embodiment are the same as those of the printing apparatus 1 of Embodiment 1; therefore, the same reference numerals are used to label the same parts and descriptions are omitted.

[0102] like Figure 14 As shown in the left figure, in the printing apparatus 1 of this embodiment, the opening / closing lever 8 has a engaging portion 81 that extends along the side of the opening / closing portion 3 and engages with the side of the main body portion 2 at the locked position. Furthermore, the opening / closing sensor 9 detects that the front end face 81a of the engaging portion 81 is in the locked position. Specifically, the plunger 92 of the opening / closing sensor 9 protrudes at the locked position of the opening / closing lever 8 towards the front end face 81a of the engaging portion 81, which faces the upper surface of the opening / closing portion 3. Thus, in Figure 14 In the locked position of the opening / closing lever 8 shown in the left figure, the plunger 92 of the opening / closing sensor 9 is pushed in by the front end face 81a of the engaging part 81 in the direction away from the opening / closing part 3 in the cutting direction Dc of the recording paper P.

[0103] like Figure 14 As shown in the right figure, in the semi-locked state where the opening and closing part 3 is closed relative to the main body part 2 and the engaging part 81 of the opening and closing rod 8 is not engaged with the shaft part 21 on the side of the main body part 2, the opening and closing sensor 9 detects that the opening and closing rod 8 is not in the locked position, that is, in the released position.

[0104] In addition, Figure 14 In the semi-locked state shown in the right figure, when the opening / closing lever 8 is moved... Figure 14 When the locking position shown in the left figure is rotated, the inclined surface 81s at the front end of the engaging part 81 abuts against the front end of the plunger 92, pushing the plunger 92 into the main body 91. The inclined surface 81s at the front end of the engaging part 81 is inclined relative to the front end surface 81a in such a way that the further away from the front end of the claw 81c, the closer it is to the front end surface 81a.

[0105] Then, as the opening / closing lever 8 is rotated further toward the locking position, the front end face 81a of the engaging part 81 abuts against the front end of the plunger 92, pushing the plunger 92 further into the main body 91. Then, the opening / closing lever 8 rotates to... Figure 14The pawl 81c of the engaging portion 81 is engaged with the shaft portion 21 in the locked position shown in the left drawing of FIG. 1, and the opening / closing sensor 9 detects that the opening / closing lever 8 is in the locked position when the plunger 92 is further pushed into the main body portion 91.

[0106] Therefore, in the present embodiment, as in Embodiment 1, a printing device 1 capable of detecting a half-locked state in which the opening / closing portion 3 is not fixed to the main body portion 2 in a state in which the opening / closing portion 3 capable of being opened and closed with respect to the main body portion 2 is closed can be provided.

[0107] All examples and conditional language recited herein are intended for pedagogical purposes to aid the reader in understanding the present application and the concepts contributed by the inventor to furthering the art, and are to be construed as being without limitation to such specifically recited examples and conditions. Moreover, all statements herein reciting principles, aspects, and concepts of the present application, as well as specific examples of

[0108] For example, the opening / closing sensor is not limited to a sensor having a plunger, and a magnetic or optical opening / closing sensor can be used. In addition, the opening / closing lever can not have a lock release lever. In addition, in a case in which the structure in which the fixed blade is moved away from the movable blade in the opposite direction of the pressing direction of the pressing portion by the lock release lever is not adopted, the lock release lever can be disposed at the end portion of the opening / closing portion on the rear side in the paper conveying direction.

[0109] Explanation of Reference Numerals

[0110] 1 printing device, 3 opening / closing portion, 31 rotation shaft, 3E1 first end portion, 3E2 second end portion, 4 printing portion, 41 head unit (first part), 42 paper pressing unit (second part), 5 cutting portion, 51 fixed blade, 52 movable blade, 54 pressing portion, 8 opening / closing lever, 81 engaging portion, 81a front end surface, 84 lock release lever, 84b protrusion, 85 extension portion, 9 opening / closing sensor, 92 plunger, Df conveying direction, P recording paper.

Claims

1. A printing device, wherein, Comprising: a printing section that performs printing on a recording paper; a main body section that supports a first part of the printing section; an opening and closing section that is rotatably coupled to the main body section with a rotation axis orthogonal to a width direction of the recording paper, and supports a second part of the printing section; an opening and closing lever that is provided at a second end portion of the opening and closing section opposite to a first end portion coupled to the main body section, and rotates between a release position in which the opening and closing section is opened and closed, and a lock position in which the opening and closing section is fixed to the main body section; and an opening and closing sensor that is provided to the main body section, and detects that the opening and closing lever is in the lock position.

2. The printing apparatus according to claim 1, wherein the opening and closing sensor has a plunger that detects the lock position of the opening and closing lever by being pushed in by the opening and closing lever in the lock position.

3. The printing apparatus according to claim 1, wherein the opening and closing lever has a fitting section that extends along a side surface of the opening and closing section and fits with a side portion of the main body section in the lock position, and an extension section that extends along the side surface of the opening and closing section to a position farther from the opening and closing section than the fitting section in the lock position, the opening and closing sensor detects that the opening and closing lever is in the lock position based on a position of the side surface of the extension section facing the main body section.

4. The printing apparatus according to claim 1, wherein the opening and closing lever has a fitting section that extends along a side surface of the opening and closing section and fits with a side portion of the main body section in the lock position, the opening and closing sensor detects that a front end surface of the fitting section is in the lock position.

5. The printing apparatus according to claim 1, wherein the opening and closing lever has a lock release lever that extends toward the first end portion of the opening and closing section in the lock position.

6. The printing apparatus according to claim 5, wherein at least a part of the lock release lever protrudes from an end surface of the opening and closing section opposite to the main body section in the lock position of the opening and closing lever.

7. The printing apparatus according to claim 5, wherein a protrusion that protrudes from an end surface of the opening and closing section opposite to the main body section is provided at a front end portion of the lock release lever.

8. The printing apparatus according to claim 5, wherein the lock release lever is disposed at an end portion of the opening and closing section on a rear side in a conveyance direction of the recording paper.

9. The printing apparatus according to claim 5, wherein the printing apparatus further includes a cutting section that cuts the recording paper, the cutting section has a fixed blade that is supported by the opening and closing section, a movable blade that is disposed adjacent to the fixed blade in the conveyance direction of the recording paper and is supported by the main body section, and a force applying section that applies a force to the fixed blade toward the movable blade. ​ ​ The lock release lever is disposed at a stable position on the force application direction side of the fixed blade from the force application portion at the lock position of the opening and closing lever, and is disposed at a paper release position that separates the fixed blade from the movable blade in the opposite direction of the force application direction of the force application portion at the release position of the opening and closing lever.

10. A printing device, wherein, Comprise: a printing section that performs printing on a recording paper; a main body section that supports a first part of the printing section; an opening and closing section that is rotatably connected to the main body section with a rotation axis orthogonal to the width direction of the recording paper, and supports a second part of the printing section; and an opening and closing lever that is provided at a second end portion of the opening and closing section on the opposite side of the first end portion connected to the main body section, and rotates between a release position that allows the opening and closing section to open and close, and a lock position that fixes the opening and closing section to the main body section, the opening and closing lever has: an engaging section that extends along the side surface of the opening and closing section and engages with the side portion of the main body section at the lock position; and a lock release lever that extends toward the first end portion of the opening and closing section at the lock position.

11. The printing apparatus according to claim 10, wherein the lock release lever is disposed at an end portion on the rear side of the opening and closing section in the conveying direction of the recording paper.

Images