JPH05147285A - Printer - Google Patents

Abstract

PURPOSE:To certainly let the cutter supported on a case in a freely shakable manner fall to the ground by electrically connecting said cutter to a main chassis without using a harness. CONSTITUTION:In a printer wherein a conductive chassis 7 is constituted of a main chasssis 7a and a sub-chassis 7b having a paper storing part and the sub-chassis 7b is provided in a displaceable manner so that the paper storing part is positioned inside and outside a front panel 1c and a cutter 13 shaken in connection with the opening and closing of the paper storing part is provided to the front panel 1c, one end of a torsion spring 17 is supported on the main chassis 7a and a cutter pressing part 16 is provided to the sub-chassis 7b and, when the paper storing part 10 is set at a closed position, the cutter pressing part 16 presses the part 18 to be pressed of the cutter 13 and the other end of the torsion spring 17 is brought into contact with the other end surface of the part 18 to be pressed by spring force.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer in which a paper storage portion for printing paper is provided outside the case so as to be freely drawn out.

[0002]

2. Description of the Related Art A schematic side view of a conventional printer is shown in FIGS. 17 and 18,
The chassis 7 is composed of a main chassis 7a and a sub chassis 7b, both of which are made of a conductive material. A synchronous shaft 20 is rotatably supported by the main chassis 7a, and the synchronous shaft 20 is rotated by the rotational force of a paper storage unit drive mechanism (not shown). A pair of arm members 21 are provided at both ends of the synchronizing shaft 20, and the sub-chassis 7b is pivotally supported on the tip ends of the pair of arm members 21. A pair of slide members 23 are horizontally slidably provided on both sides of the main chassis 7a, and the sub-chassis 7b is pivotally supported at the tips of the pair of slide members 23.

The platen 8 is rotatably supported on the upper portion of the sub chassis 7b, and the platen 8 is rotated by the rotating force of a platen rotating mechanism (not shown). The print head 12 is fixed to a head supporting member 40, and the head supporting member 40 is axially supported by the main chassis 7a. A pair of left and right compression springs 42 is provided on the upper surface of the print head 12.
Acts to bias the print head 12 toward the platen 8 side. Further, the print head 12 is configured so that a pressing force of a head lifting mechanism (not shown) acts on the print head 12, and the print head 12 presses the platen 8 by the spring force of the compression spring 42 (the solid line position in FIG. 17). .) And a standby position (an imaginary line position in FIG. 17) away from the platen 8 against the spring force.

The roller 72 is supported by the print head 12,
It is arranged at a position where the platen 8 is pressed. The paper storage unit 10 is provided inside the sub chassis 7b, and the roll-shaped print paper 11 is stored in the paper storage unit 10. The print paper 11 passes through the roller 73 and the platen 8 and between the print head 12 and the platen 8 and is arranged in a paper path system that reaches the paper discharge port 4. The paper discharge port 4 is formed on the front panel 1c, and a cutter 13 is provided inside the paper discharge port 4.

The cutter 13 is rotatably provided on the front panel 1c and has a projecting position (position shown in FIG. 17) projecting to the paper discharge port 4 and a retracted position (position shown in FIG. 18) not projecting to the paper discharge port 4. Displaces between. The leaf spring 80 supported by the front panel 1c acts on the cutter 13,
The cutter 13 is urged toward the retracted position by the action of the leaf spring 80. Further, the cutter pressing portion 1 is provided on the sub chassis 7b.
6 is provided, and the cutter pressing portion 16 is provided in the paper storage portion 10.
It is configured to press the pressed portion 18 of the cutter 13 with a stroke from the open position to the closed position.

In the above structure, when the print mode is selected with the paper storage unit 10 in the closed position and the print head 12 in the standby position, the pressing force of the head elevating mechanism is released and the print head 12 moves to the position shown in FIG. It is located at the pressure contact position indicated by the solid line at 17. Next, the platen 8 is rotated by the rotational force of the platen rotating mechanism and the printing head 12 is driven to start printing. When the printing is completed, the printing head 12 is returned to the standby position shown by the phantom line in FIG. 17 by the pressing force of the head lifting mechanism. Then, the operator cuts the print paper 11 output from the paper discharge port 4 by using the cutter 13.

When the paper storage unit open mode is selected,
The pair of arm members 21 are rotated by the rotational force of the paper storage unit drive mechanism, the sub-chassis 7b is rotated and ejected forward, and the paper storage unit 10 is in the open position as shown in FIG.
By the movement of the sub-chassis 7b, the cutter pressing portion 16 is separated from the pressed portion 18, and the cutter 13 is displaced to the retracted position by the spring force of the plate spring 80. When the print paper 11 is replaced with a new one and the paper storage unit closing mode is selected, the pair of arm members 21 are rotated in the opposite direction by the rotational force of the paper storage unit drive mechanism, and the sub chassis 7b is stored while rotating. Then, as shown in FIG. 17, the paper storage unit 10 is at the closed position. By the movement of the sub-chassis 7b, the cutter pressing portion 16 presses the pressed portion 18, and the cutter 13 is displaced to the protruding position against the spring force of the plate spring 80. That is, when the paper storage unit 10 is in the open position, the operator is not injured by the cutter 13 by displacing the cutter 13 to the retracted position (see Japanese Patent Laid-Open No. 3-130181).

If the cutter 13, which is a conductive member, is supported by the front panel 1c, which is an insulator, and electrically insulated from the main chassis 7a, static electricity tends to accumulate. Then, when electrified, electrostatic noise is scattered on a nearby substrate, which causes a malfunction. Therefore, according to the above-mentioned conventional configuration, the cutter 13 is dropped to the ground by electrically connecting the pressed portion 18 and the main chassis 7a through the sub chassis 7b.

[0009]

However, although the sub-chassis 7b is rotatably supported at two points with respect to the main chassis 7a, it cannot be said to be an electrically reliable connection, and as a result, the earth of the cutter 13 is grounded. Was also incomplete. Here, if the cutter 13 and the main chassis 7a are connected by a harness, a complete countermeasure against static electricity can be taken. However, assembling workability is deteriorated and the harness is attached to the cutter 13 without careful consideration. This is an impediment to the displacement operation and is not a practical means.

Therefore, it is an object of the present invention to provide a printer capable of reliably dropping the cutter to the ground without using a harness.

[0011]

In order to achieve the above object, a printer according to the present invention covers an outer circumference of a conductive chassis with an insulative case, and covers the chassis with a main chassis and a paper storage unit for printing paper. A sub-chassis having a sub-chassis, the sub-chassis being located between the open position in which the paper storage section opens to the outside of the case and the closed position in which the paper storage section is stored in the case with respect to the main chassis. Is provided so that the cutter can be displaced between the projecting position where the cutter is projected to the paper discharge port and the retracted position where the cutter is not projected to the paper discharge port in the case, and when the paper storage unit is at the open position, the cutter is provided. In the printer in which the cutter is displaced to the retracted position and the cutter is displaced to the protruding position when the paper storage unit is positioned at the closed position, one end of a conductive spring is attached to the main chassis. A cutter pressing portion is provided on the sub-chassis while supporting, and when the paper storage portion is located at the closed position, the cutter pressing portion presses the pressed portion of the cutter, and the other end surface of the pressed portion has the spring of the spring. The other end is pressed by a spring force.

[0012]

Since the pressed portion of the cutter is pressed against the other end of the spring whose one end is supported by the main chassis by a spring force, the cutter and the main chassis are reliably electrically connected via the spring.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 16 show an embodiment of the present invention. 2 is a perspective view of the printer when the paper storage portion is located at the closed position, FIG. 3 is a perspective view of the printer when the paper storage portion is located at the closed position, and FIG. 4 is an exploded perspective view of the printer.
FIG. 5 shows a partially cutaway front view of the printer.

2 to 5, the printer case 1 is made of a synthetic resin material, and includes a bottom cover 1a for closing the lower surface, a top cover 1b for closing the upper surface and both side surfaces, and a front panel 1c and a door panel 1d for closing the front surface. The rear panel 1e closes the rear surface. The operation switch 2 and the like are arranged on the upper part of the front panel 1c, and the large opening 3 is provided below the operation switch 2 and the like.

As shown in FIG. 2, the door panel 1d is arranged in the large opening 3 when the paper storage portion 10 is in the closed position, and the upper part of the large opening 3 which is not closed by the door panel 1d is the paper outlet 4. Constitute. Further, as shown in FIG. 3, when the paper storage unit 10 is in the open position, the sub-chassis 7 from the large opening 3 will be described below.
b is pulled out.

A mechanical block body 5 and the like fixed to a chassis 7 are housed on the front side of the case 1, and a substrate block body 6 is housed on the rear side.

6 and 7 are left and right side views of the mechanical block body 5 and the like when the paper storage portion 10 is located at the closed position, and FIG.
The right side views of the mechanical block body 5 and the like when the paper storage unit 10 is located at the open position are shown in FIG.

6 to 8, the chassis 7 comprises a main chassis 7a and a sub-chassis 7b both of which are made of a conductive metal member, and the main chassis 7a is attached to the bottom cover 1a. The front panel 1c is attached to the front side of the main chassis 7a, and the door panel 1d is attached to the front side of the sub-chassis 7b.

A platen 8 is rotatably supported on the upper end of the sub chassis 7b, and the platen 8 is made of a rubber material. Then, the platen 8 is rotated by a platen rotating mechanism C described below. Also, the sub chassis 7
A tray 9 having an arcuate lower surface is provided on the inner side of b, and a space above the tray 9 constitutes a paper storage unit 10. A thermosensitive print paper 11 wound in a roll is stored in the paper storage unit 10, and the paper storage unit 10 for replacing the print paper 11 is automatically opened / closed by a paper storage unit opening / closing mechanism A described below. The front end side of the print paper 11 passes between the platen 8 and the roller 73 and between the platen 8 and the print head 12, and is arranged in a paper path system that reaches the paper discharge port 4.

A print head 12 is supported on the upper end of the main chassis 7a, and the print head 12 is displaced by a head lifting mechanism B.

9 to 11 are right side views mainly showing the paper storage unit opening / closing mechanism A, respectively. 9 to 11, the paper storage unit opening / closing mechanism A automatically opens and closes the paper storage unit 10 as described above, and is configured as follows. That is, the synchronous shaft 20 is rotatably supported by both side plates 19 of the main chassis 7a, and a pair of arm members 21 are fixed at both ends of the synchronous shaft 20 and inside the both side plates 19. This pair of arm members 21
The front ends of the sub chassis 7b via the support pins 22.
It is pivotally supported at the rear end.

The pair of slide members 23 are arranged outside the side plates 19 of the main chassis 7a, and the guide pins 24 projecting from the side plates 19 are inserted into the elongated holes 23a of the slide members 23, respectively. Guide rollers 25 supported by both side plates 19 are in contact with the upper and lower surfaces of the pair of slide members 23, respectively, and the pair of slide members 23 are slidable in the front-rear direction by the guide pins 24 and the guide rollers 25. Has been. The front ends of the pair of slide members 23 slidably provided in this manner are pivotally supported by the front ends of the sub-chassis 7b via the support pins 26.

On the other hand, a fan gear 27 is fixed to the right end of the synchronous shaft 20, and the motor 2 is attached to the fan gear 27.
The rotating force of 8 is the gear 29 fixed to the rotating shaft of the motor 28.
Are transmitted via the two reduction gears 30 and 31.

The paper storage unit locking means 32 has a lock lever 33 swingably supported by the right side plate 19 of the main chassis 7a. The locking portion 33a of the lock lever 33 is between the locked position and the unlocked position. It is configured to be displaceable by. A spring 34 that urges the lock lever 33 toward the lock position acts, and the locking portion 33a is locked to the locked portion 23b of the right slide member 23 at the lock position.
Further, one end of a release lever 36 abuts against the pressed portion 33b of the lock lever 33, and a substantially central portion of the release lever 36 is pivotally supported by the main chassis 7a. Release lever 36
A cam pin 37 is provided at the other end of the
Is in contact with the second cam surface 46b of the control gear 46 described below. Then, the release lever 36 rotates according to the rotation of the control gear 46, and the lock lever 33 is displaced to the lock release position.

As shown in FIG. 10, when the paper storage unit 10 is in the closed position and the motor 28 is rotated in the unlocked state, this rotational force is transmitted to the synchronous shaft 20 so that the pair of arm members 21 are clocked. Rotate in the direction. Then, the sub-chassis 7b is guided by the pair of slide members 23 and is pulled out forward, and is rotated counterclockwise about the support pin 26 as a fulcrum to position the paper storage portion 10 at the open position as shown in FIG. .. In addition, by the reverse operation, the paper storage unit 1
0 is returned from the open position to the closed position.

12 to 14 are right side views mainly showing the head lifting mechanism B, respectively. 12 to 14, the head lifting mechanism B automatically displaces the print head 12 between the pressure contact position and the separation position, and is configured as follows. That is, the rear end of the head support member 40 is rotatably supported by the support shaft 41 on the upper end of the main chassis 7a, and the print head 12 is fixed to the lower surface on the front end side of the head support member 40. Printing head 12
The head supporting member 40 is configured to be displaceable between a pressure contact position where the head support member 40 is pressed against the platen 8 and an upper separation position which is sufficiently separated from the platen 8.
The print head 12 is, for example, a heat-sensitive type and is driven by a drive circuit (not shown).

A pair of left and right compression springs 42a, 42 are provided between the upper surface of the head support member 40 and the main chassis 7a.
b (shown in FIG. 5) is interposed, and the print head 12 is biased toward the pressure contact position side by this spring force. The printing head 12 is pressed against the platen 8 by this spring force at the pressing position.

Further, a roller support member 70 is pivotally supported on the head support member 40 via a support pin 71. A shaft 72 is fixed to the lower end of the roller support member 70, and a plurality of rollers 73 are rotatably supported on the shaft 72. The shaft 72 of the roller 73 is arranged parallel to the shaft 8a of the platen 8. Further, a tension spring 74 is applied between the upper end of the roller support member 70 and the head support member 40, and the spring force biases the roller 73 toward the platen 8. When the paper storage unit 10 is not located at the closed position, the stopper end surface 70a is brought into contact with the head support member 40 to regulate the position. When the paper storage unit 10 is in the closed position, the roller 73 is pressed against the platen 8 via the print paper 11.

A paper pressing plate 75 is fixed to the front surface of the head supporting member 40, and the lower end of the paper pressing plate 75 is located below the printing head 12.

On the other hand, one side of the substantially triangular operating plate 43 is rotatably supported by the right side plate 19 via a support pin 44. The pressing portion 4 is provided at the other corner of the operating plate 43.
3a is provided, and the pressing portion 43a is provided so that the lower surface of the head supporting member 40 can be pressed by the rotation of the operating plate 43. A cam pin 45 is provided on the other corner side of the operating plate 43, and the cam pin 45 is a control gear 46.
Is in contact with the first cam surface 46a.

The control gear 46 is supported by the right side plate 19 and is provided with a first cam surface 46a and a second cam surface 46b on the inner surface side thereof. The first cam surface 46a is configured so that the distance from the center gradually changes as the rotation angle changes, and the rotation position of the operating plate 43 changes as the control gear 46 rotates. The second cam surface 46b is configured so that the distance from the center becomes short only in part, and the release lever 36 presses the lock lever 33 at this short position. The control gear 46 is configured such that the rotational force of the motor 47 is achieved by the gear 48 fixed to the rotation shaft of the motor 47, the timing belt 49, and the three reduction gears 50, 51, 52.

As shown in FIG. 12, when the print head 12 is in the press contact position and the motor 47 rotates, this rotational force is transmitted and the control gear 46 rotates. Then, the cam pin 45 of the operating plate 43 slides on the first cam surface 46a, and the operating plate 43
Rotates clockwise, and the pressing portion 43a of the operating plate 43 contacts the lower surface of the head supporting member 40. Further, the operating plate 43
When the head rotates, the head support member 40 moves the compression spring 42a,
The print head 12 is displaced upward against the spring force of 42b.
Is located at the standby position shown in FIG. When the operating plate 43 further rotates from this state, the head supporting member 40 is displaced upward and the printing head 12 is positioned at the separated position shown in FIG. 14 in the same manner as described above. Further, by the operation reverse to the above, the print head 12 is displaced from the separated position to the press contact position through the standby position.

15 and 16, the platen rotating mechanism C is shown.
The cross-sectional views mainly showing are respectively shown. 15 and 16, the platen rotation mechanism C includes a first support plate 55 fixed to the inside of the left arm member 21 and a second support plate 56 fixed to the inside of the left side of the sub chassis 7b.
Have and. A motor 57, a first reduction gear 59 that meshes with a gear 58 fixed to the rotation shaft of the motor 57, and a gear 60 that meshes with the first reduction gear 59 are supported by the first support plate 55. There is. Second
A second reduction gear 61 meshing with the gear 60, a gear 62 meshing with the second reduction gear 61, and a gear 63 further meshing with the second reduction gear 61 are supported by the support plate 56. The second reduction gear 61 is supported around a support pin 22 that pivotally supports the arm member 21 and the sub-chassis 7b, and the second reduction gear 61 and the gear 60 are irrespective of the relative rotational positions of the arm member 21 and the sub-chassis 7b. It is configured so that the distance between the rotation centers does not change. Therefore, even if the second reduction gear 61 and the gear 60 are displaced between the closed position of the paper storage unit 10 shown in FIG. 15 and the open position of the paper storage unit 10 shown in FIG.

A small-diameter gear 64 is integrally provided on the gear 63, and a timing belt 66 is hung between the gear 64 and a gear 65 fixed to the shaft 8a of the platen 8. The second support plate 56 is rotatably supported by the sub chassis 7b via the support pins 22. A tension spring 67 is applied between the second support plate 56 and the sub chassis 7b, and a constant tension is applied to the timing belt 66 by this spring force. Further, the second support plate 56 is provided with a temporary spring locking portion 56a. At the time of assembling the second reduction gear 61 and the like, one end of the tension spring 67 is hooked on the temporary spring locking portion 56a so that the second reduction gear 61 and the timing belt 66 are provided.
After completion of the assembly, if one end of the tension spring 67 is hooked on the spring locking portion 68 of the sub chassis 7b, the tension spring 67 can be assembled without receiving the spring force of the tension spring 67.

The platen rotation mechanism C configured as described above
When the motor 57 rotates, this rotational force is transmitted in order of the first reduction gear 59, the gear 60, the second reduction gear 61, the gear 62 and the gear 63. Then, the rotation of the gear 63 is transmitted via the timing belt 66 to rotate the platen 8.

1 (a) and 1 (b) are enlarged side views near the front side, respectively. 1A and 1B, the cutter 13 is formed of a conductive metal member, and includes a blade portion 13a and a blade mounting portion 13b that supports the blade portion 13a. The blade mounting portion 13b is swingably supported by the hooking portion 14 of the front panel 1c, and the cutter 13 is displaceably provided between the projecting position shown in FIG. 1A and the retracted position shown in FIG. 1B. ing. Cutter 1
3 is biased toward the exit position by the spring force of the torsion spring 15. The sub chassis 7b has a cutter pressing portion 16
Further, one end side of a conductive torsion spring 17 is supported by the main chassis 7a. Paper compartment 1
When the cutter pressing portion 16 presses one end of the pressed portion 18 of the cutter 13 at the closed position of 0 and the other end of the pressed portion 18 is received by the torsion spring 17, the cutter 13 resists the spring force of the torsion spring 15. And is located at the protruding position.

Returning to FIG. 4 and FIG. 5 again, the plate substrate 7
7 is supported on the right side plate 19 of the main chassis 7a with a constant space, and supports the tip ends of the shafts of the gears and the like supported by the main chassis 7a. In addition, the contact 78 provided on the control gear 46 or the sector gear 27 is brought into contact with the print pattern of the printed board 77 to control the control gear 46 or the sector gear 2.
7 rotational position detecting means is configured.

The operation of the above configuration will be described below.
First, the printing operation will be described. When the paper storage unit 10 is in the closed position and the print head 12 is in the standby position as shown in FIG. 13, when the print mode is selected, the head lifting mechanism B is driven and the print head 12 is moved. Figure 1
It is displaced to the press contact position shown in 2. When the print head 12 is displaced to the press contact position, the platen rotation mechanism C drives, the platen 8 rotates, and the drive circuit of the print head 12 drives. The printing paper 11 is fed at a constant speed in accordance with the rotation of the platen 8, and the printing head 12 appropriately heats the printing paper 11 for printing.

When printing is completed, the platen rotation mechanism C stops driving and the head elevating mechanism B drives to displace the printing head 12 from the pressure contact position shown in FIG. 13 to the standby position shown in FIG. The operator obtains a print image by cutting the print paper 11 output from the paper discharge port 4 with the cutter 13.

Next, the operation of replacing the print paper 11 will be described. When the paper storage unit open mode is selected at the standby position shown in FIG. 9, the head lifting mechanism B is driven to displace the printing head 12 to the separated position shown in FIGS. The lock of the lock means 32 is released. Next, the paper storage drive mechanism A is driven to displace the paper storage unit 10 to the open position shown in FIG. Due to the displacement of the paper storage unit 10 from the closed position to the open position, the cutter pressing portion 16 of the sub-chassis 7b is separated from the pressed portion 18 and the cutter 13 is moved by the spring force of the torsion spring 15 as shown in FIG. Move to the exit position.

The operator operates the print paper 11 in the paper storage unit 10.
The core is taken out, and a new print paper 11 is set with its tip side pulled out. Then, when the paper storage unit close mode is selected, the paper storage unit drive mechanism A drives to displace the paper storage unit 10 to the closed position shown in FIG. Next, the head elevating mechanism B is driven to move the printing head 12 to the position shown in FIGS.
It is returned to the standby position shown in 3 and completed. Paper storage section 1
The displacement from the open position of 0 to the closed position of the sub-chassis 7
The cutter pressing portion 16 of b presses the pressed portion 18 against the spring force of the torsion spring 15 and the other end surface of the pressed portion 18 contacts the other end of the torsion spring 17, and thereafter the cutter pressing portion 16 The cutter 13 is pressed by pressing the pressed portion 18 against the spring force of the two torsion springs 15 and 17.
It is displaced to the protruding position shown in (a).

Since the cutter 13 and the main chassis 7a are connected to each other via the spring 17 which presses with a spring force, the electric connection is reliable and the cutter 13 is surely dropped to the ground. Therefore, the cutter 13 does not accumulate static electricity, and malfunction due to electrostatic noise does not occur,
Further, since no harness is used, there is no problem such as deterioration of assembly workability.

Since the cutter pressing portion 16 of the sub-chassis 7b also presses against the pressed portion 18 of the cutter 13, the sub-chassis 7b also has the cutter 13 and the torsion spring 17.
Since the sub chassis 7b is surely dropped to the ground because it is electrically and surely connected to the main chassis 7a via the above, it also serves as a countermeasure against static electricity of the sub chassis 7b.

[0044]

As described above, according to the present invention, the chassis is composed of the main chassis and the sub-chassis having the paper accommodating part, and the sub-chassis is provided with the open position and the paper which the paper accommodating part opens outside the case. In a printer in which a storage unit is provided so as to be displaceable between closed positions for storage in a case, and a cutter provided in the case that is displaced in association with opening and closing of the paper storage unit,
The main chassis supports one end of the spring, and the sub-chassis is provided with a cutter pressing part.When the paper storage part is in the closed position, the cutter pressing part of the sub-chassis presses the pressed part of the cutter. Since the other end of the spring is pressed against the other end surface by the spring force, since the cutter is connected to the main chassis via the spring deformed spring, it is securely connected electrically and the cutter is surely dropped to the ground. Has the effect. Further, since the sub chassis is also electrically and surely connected to the main chassis via the cutter and the spring, the sub chassis can be surely dropped to the ground.

[Brief description of drawings]

FIG. 1A is an enlarged side view of the vicinity of a front side when a paper storage unit is located at a closed position, and FIG. 1B is a front side when the paper storage unit is located at an intermediate position between a closed position and an open position. Enlarged side view of the vicinity (Example).

FIG. 2 is a perspective view (embodiment) of the printer when the paper storage unit is located at the closed position.

FIG. 3 is a perspective view (embodiment) of the printer when the paper storage unit is located at the open position.

FIG. 4 is an exploded perspective view of the printer (example).

FIG. 5 is a partially cutaway front view of the printer (example).

FIG. 6 is a right side view (embodiment) of the chassis block body and the like when the paper storage portion is located at the closed position.

FIG. 7 is a left side view (embodiment) of the chassis block body and the like when the paper storage portion is located at the closed position.

FIG. 8 is a right side view (embodiment) of the chassis block body and the like when the paper storage portion is located at the open position.

FIG. 9 is a right side view (embodiment) mainly showing the paper storage unit opening / closing mechanism in which the paper storage unit is in the closed position and in a locked state.

FIG. 10 is a right side view (embodiment) mainly showing the paper storage unit opening / closing mechanism in which the paper storage unit is in the closed position and in the unlocked state.

FIG. 11 is a right side view (embodiment) mainly showing the paper storage unit opening / closing mechanism when the paper storage unit is located at the open position.

FIG. 12 is a right side view (embodiment) mainly showing the head lifting mechanism when the printing head is located at the press contact position.

FIG. 13 is a right side view (embodiment) mainly showing the head lifting mechanism when the printing head is located at the standby position.

FIG. 14 is a right side view (embodiment) mainly showing the head lifting mechanism when the printing head is located at the separated position.

FIG. 15 is a cross-sectional view (embodiment) mainly showing the platen rotation mechanism when the paper storage portion is located at the closed position.

FIG. 16 is a cross-sectional view (embodiment) mainly showing the platen rotation mechanism when the paper storage portion is located at the open position.

FIG. 17 is a schematic side view (conventional example) of the printer when the paper storage unit is located at the closed position.

FIG. 18 is a schematic side view (conventional example) of the printer when the paper storage unit is located at the open position.

[Explanation of symbols]

1c ... front panel (case), 7 ... chassis, 7a
... Main chassis, 7b ... Sub chassis, 10 ... Paper storage section, 11 ... Printed paper, 13 ... Cutter, 16 ... Cutter pressing section, 17 ... Torsion spring (spring), 18 ... Pressed section.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location H01R 4/64 A 4229-5E

Claims (1)

[Claims] 1. A conductive chassis is covered with an insulative case, the chassis is composed of a main chassis and a sub-chassis having a paper storage portion for printed paper, and the sub-chassis with respect to the main chassis. Provided so as to be displaceable between an open position in which the paper storage section is opened to the outside of the case and a closed position in which the paper storage section is stored in the case,
The case is provided so that the cutter can be displaced between a projecting position that projects into the paper discharge port and a retracted position that does not project into the paper discharge port. When the paper storage unit is in the open position, the cutter is in the retracted position, and In a printer in which the cutter is displaced to the projecting position when the paper storage unit is located at the closed position, the main chassis supports one end of a conductive spring, and the sub-chassis is provided with a cutter pressing unit. A printer characterized in that the cutter pressing portion presses a pressed portion of the cutter when the storage portion is located at the closed position, and the other end of the spring is pressed against the other end surface of the pressed portion by a spring force. ..