JP2003118185A - Printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable smooth opening operation of a lid body and improved the operability at an opening time of the lid body in a printer with a branching body for branching a continuous formed sheet and a cut form sheet at a downstream position of a printing head. SOLUTION: The printer 10 is provided with a casing for storing roll paper P1, the lid body 28 for opening and closing an opening part 26 of the casing, the printing head 16 for printing on the roll paper P1 and the cut form paper P2, the branching body 18 set at the downstream position of the printing head 16 at the casing side for branching the roll paper P1 and the cut form paper P2, a lid body opening button 31 set on the casing side and manipulated in a straight-line direction, and a lid body locking mechanism 44 for locking the lid body 28 at a closing position. The lid body lock mechanism 44 is constituted to allow the opening operation of the lid body 28 in response to the manipulation of the lid body opening button 31 and to drive the branching body 18 to retreat.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer for printing on a continuous sheet and a single-cut sheet, and more particularly to a printer having a branching body for branching the continuous sheet and the single-cut sheet.

[0002]

2. Description of the Related Art A printer is known which has a storage unit for a continuous sheet therein and which draws out the continuous sheet from the storage unit for printing. This type of printer has an opening that is opened and closed by a lid, and through this opening, continuous sheets are exchanged and maintenance inside the printer is performed.

In recent years, printers which also serve as a print head and print on continuous sheets and single-cut sheets have become widespread.
This type of printer can issue various sheets such as receipts, bills, tickets, and coupons, and is widely used in supermarkets and other stores.

[0004]

In the printer as described above, it is desirable that the continuous sheet and the single-cut sheet are guided to a common printing position and that they are discharged from separate discharge ports after printing. It is required to provide a branching body for branching the continuous sheet and the single-cut sheet at a position downstream of the print head. However, when the branch body as described above is provided, the branch body may interfere with the opening / closing operation of the lid body, and in this case, there is a disadvantage that the smooth opening / closing operation of the lid body is obstructed. Not only that, but the branch body and the member on the lid side may be damaged.

An object of the present invention is to provide a branch body for branching a continuous sheet and a single-cut sheet at a position downstream of the print head, and yet, at the time of opening the lid body, the branch body is covered with the lid body. By automatically retracting to a position that does not obstruct the opening and closing of the body, it is possible to smoothly open the lid and prevent damage to the branch body, and moreover, the straight line of the lid opening operation button. It is an object of the present invention to provide a printer that can improve the operability when the lid is opened by unlocking the lid and retracting the branch according to the manual operation.

[0006]

In order to achieve the above object, the printer of the present invention comprises a housing for accommodating continuous sheets,
A lid that opens and closes the opening of the housing, a print head that prints on the continuous sheet and the single-cut sheet, and is provided at a position downstream of the print head on the housing side. A branching body for branching the bill sheet, which can be retracted to a position that does not hinder the opening and closing of the lid, a lid opening operation button provided on the housing side and operated in a linear direction, and the lid. A lid lock mechanism for locking the body in a closed position, which allows the opening operation of the lid body in response to the operation of the lid opening operation button and operates the branch body to the retreat side. It is equipped with.

Further, the lid lock mechanism includes a lock pin provided on the housing side, a lock lever rotatably provided on the lid side and disengageable from the lock pin, and a lock lever provided on the housing side. A lock release lever rotatably provided, which corresponds to an operation of the lid opening operation button,
While operating the lock lever to the unlock side,
It is preferable that the branch body is moved to the retreat side. In this case, although the lid opening operation button is operated linearly, the operating force of the lid opening operation button is set by operating the lock lever and the branch body via the rotary lock release lever. Can be alleviated, and the operability during the lid opening operation can be further improved.

The movable platen is rotatably provided on the lid, and is retracted from a position close to and facing the print head when the lid is opened, and the lid is closed. Along with this, it is preferable to further include a unit that advances toward the position where the print head closely approaches. In this case, interference between the branch body and the movable platen when the lid body is opened and closed can be reliably avoided, and the smoothness during the lid body opening operation can be further enhanced.

Further, a fixed side conveyance roller provided on the branch body and a movable side conveyance roller provided on the movable platen for conveying the continuous sheet between the fixed side conveyance roller and the fixed side conveyance roller are further provided. preferable. In this case, the continuous sheet is conveyed downstream of the print head, so that the continuous sheet can be prevented from being loosened, and the branch body is also used as a supporting member of the fixed-side conveying roller. Can be reduced and the structure can be simplified.

Further, it is preferable that the branch body is configured to be rotatable in the advancing / retreating direction with respect to the movable side transport roller, and is biased in the advancing direction by a pressing spring. In this case, the branch body can be smoothly retracted, and the paper can be reliably pressed by the urging force of the pressing spring.

Further, it is preferable that the branch body has a fixed blade for cutting the continuous sheet. In this case, since the branch body is also used as the support member for the fixed blade, the number of parts can be reduced and the structure can be simplified.

The lock release lever has a first lever portion linked to the lid opening operation button, a second lever portion linked to the lock lever and the branch body, and the first and second lock levers. It is preferable that the first and second lever portions are pivotally supported by a connecting portion that integrally connects the lever portions. In this case,
Since the strength of the lock release lever is increased and the lock release lever can be smoothly operated, the operability during the lid opening operation can be further improved.

The lock release lever support portion for rotatably supporting the lock release lever includes a rotation support portion for permitting lateral attachment of the lock release lever outside a normal rotation range, and a normal rotation support portion. A stopper portion that restricts the lateral movement of the lock release lever within a moving range, and further, the rotation of the lock release lever outside the normal rotation range may be restricted by the lid opening operation button. preferable. In this case, since a dedicated member for restricting the lateral movement of the lock release lever is not required, it is not possible to reduce the number of parts and the number of assembling steps, and the structure can be simplified.

Further, the first or second lever portion is
The rotation support portion includes a cutout portion continuous with the rotation fulcrum hole, while the rotation support portion is provided with a narrow portion into which the cutout portion can be fitted, and a lateral projection from the narrow portion. It is preferable that the rotary fulcrum shaft portion is allowed to be fitted into the rotary fulcrum hole in a state where the portion is fitted in the narrow portion. In this case, the lock release lever can be attached to the rotation support portion with a simple structure such that the cutout portion is formed in the lock release lever and the narrow width portion is formed in the rotation support portion.

[0015]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a lid closed state of a printer according to an embodiment of the present invention, FIG. 2 is a perspective view showing a printer lid opened state, and FIG. 3 is a printer unit lid closed state. 5 is a side sectional view of the printer unit, and FIG. As shown in these drawings, the printer 10 is configured by covering the printer unit 11 with a cover (casing constituent member) 12. The printer 10 includes a roll paper storage unit 13 that stores roll paper (continuous sheet) P1.
And a cut sheet insertion slot 14 into which a cut sheet (cut sheet) P2 is inserted, and a roll sheet P1 pulled out from the roll sheet storage section 13 and a cut sheet inserted from the cut sheet insertion section 14 The roll paper transport path and the cut paper transport path are configured so that the paper P2 is transported through the common printing position 15.
A print head 16 and a movable platen 17 are provided at the print position 15.
And are arranged in close proximity to each other, and on the downstream side,
A branching body 18 for branching the discharge path of the roll paper P1 and the cut paper P2 is provided.

The roll paper P1 pulled out from the roll paper storage unit 13 and the first fixed transport roller 19 (driving side) and the first
The print position 15 is reached by passing between the movable conveying roller 20 (driven side), and the second fixed conveying roller 21 (driven side) and the second movable conveying roller 22 (driving side) are provided behind the branch body 18. The paper is discharged from the roll paper discharge port 23 through the gap. On the other hand, the cut sheet P2 inserted from the cut sheet insertion port 14
Passes through the rear side of the cut paper transport roller 24 and print position 15
Further, the sheet is discharged from the cut sheet discharge port 25 through the front side of the branch body 18.

An opening 2 is provided above the roll paper storage 13.
6 is formed, and the roll paper P is passed through the opening 26.
1 is exchanged. The opening 26 is opened and closed by a lid 28 that is provided at the rear of the unit frame (casing component) 27 so as to be vertically rotatable. Opening and closing the lid 28
When the lid body 28 reaches the closed position, a pair of left and right lock levers 29 provided on the lid body 28 side so as to be rotatable back and forth are automatically engaged with the lock pins 30 provided on the unit frame 27 side. The lid 28 is locked by the lock lever 29 and is released in response to an operation of a lid opening operation button 31 described later.

The movable platen 17 is supported on the tip of the lid 28 via a platen support shaft 32 so as to be rotatable back and forth. The first movable conveying roller 20 is provided on the free end side of the movable platen 17 via a roller support shaft 33, and the second movable conveying roller 22 is provided on the fixed end side via a platen support shaft 32. Is provided. The second movable transport roller 22, which is a drive roller, is linked to a transport motor (not shown) via a gear transmission mechanism 34 provided on one side of the movable platen 17 when the lid 28 is fully closed. , Is driven and rotated by the power of the carrying motor. Further, the movable platen 17 is biased to the lower surface side of the lid body 28 by a retracting ammunition (not shown), and when the lid body 28 is in an open state, the movable platen 17 is covered by the biasing force of the retracting ammunition. Body 2
8 is held in a posture along the lower surface.

On the other hand, on the unit frame 27 side, a guide member 35 for rotating the movable platen 17 as the lid 28 is opened and closed is provided. The guide member 35 engages with a pair of left and right engaging levers 36 projecting from the fixed end side of the movable platen 17 to rotate the movable platen 17. Hereinafter, the basic operation of the movable platen 17 will be described with reference to FIGS.

FIG. 6 is a side view of the printer unit showing the lid body fully opened. As shown in this figure, the lid 2
When 8 is in the fully open state, the movable platen 17 is held in a posture along the lower surface of the lid 28 by the urging force of the retracting ammunition, and the upper part of the roll paper storage unit 13 is widely opened. Further, the movable platen 17, the first movable conveyance roller 20, and the second movable conveyance roller 22 are retracted together with the lid 28, so that one side of the roll paper conveyance path is opened. In this state, the roll paper P1 is stored and the roll paper storage unit 1
The roll paper P1 is pulled out from 3 and is placed along the roll paper transport path.

FIG. 7 is a side view of the printer unit showing the lid half-opened state, FIG. 8 is a side view of the printer unit showing the state in which the engaging lever contacts the guide member, and FIG. 9 shows the movable platen rotating. FIG. 10 is a side view of the printer unit showing a state immediately before the lid reaches the fully closed position, and FIG. As shown in these figures, after the roll paper P1 is stored, the lid 28
When is closed, the engaging lever 36 of the movable platen 17 engages with the guide member 35. Further, when the lid body 28 is pushed to the closing side, the engaging lever 36, whose downward movement is restricted by the guide member 35, relatively rotates in the backward direction with respect to the lid body 28, and accordingly the movable platen 17 moves backward. It resists against the urging force of the ammunition machine, and relatively rotates in the advancing direction in a contradictory manner. As a result, the movable platen 17 rotates in the forward direction while moving downward together with the lid 28, and enters the space below the branch body 18.

FIG. 11 is a side view of the printer unit showing the lid fully closed state. As shown in this figure, when the lid 28 is closed to the automatic lock position (fully closed position) by the lock lever 29, the movable platen 17 reaches the position close to the print head 16 and the first movable conveyance. The roller 20 and the second movable conveyance roller 22 are roll paper P1.
Is pressed, and the printer 10 is ready to print.

On the other hand, if the lid opening operation button 31 is operated with the lid 28 fully closed, the lid 28 can be opened. When the lid 28 is opened, the engagement lever 36 is relatively rotated in the forward direction by the action opposite to that at the time of the closing operation, and accordingly, the movable platen 17 is relatively rotated in the backward direction in the anti-reverse direction.
As a result, the movable platen 17 rotates in the backward direction while moving upward together with the lid body 28, and retracts from the lower space of the branch body 18.

By the way, when the lid 28 is closed as described above, first, the second movable conveyance roller 22 comes into contact with the second fixed conveyance roller 21 on the downstream side of the print head 16, and then the first movable conveyance roller 21 is moved. The transport roller 20 contacts the first fixed transport roller 19 on the upstream side of the print head 16. This allows
An appropriate tension can be applied to the roll paper P1 pulled out along the roll paper transport path, and moreover, the first and second movable transport rollers 20, 22 press the roll paper P1 at different timings to roll the roll paper P1. It is possible to avoid the inconvenience that an unreasonable force acts on the paper P1 and the slackened roll paper P1 is pressed by both the movable conveyance rollers 20 and 22 as it is.

The movable platen 17 is further provided with positioning guide portions 37 on both left and right side surface portions on the free end side. The positioning guide portion 37 has a guide groove 37a that opens downward, and engages with a fixed guide pin 38 provided on the unit frame 27 side to position the movable platen 17 at a position close to and facing the print head 16. . That is, as shown in FIG. 10, when the lid 28 is closed to the position immediately before the fully closed position, the guide member 35 makes the rotation of the movable platen 17 substantially stopped and allows some free rotation. The movable platen 17 is lowered in a substantially vertical direction. At this time, the inclined guide surface 37b formed in the lower portion of the positioning guide portion 37 abuts the fixed guide pin 38, and the movable platen 17 is positioned and guided so that the guide groove 37a engages with the fixed guide pin 38. As a result, the movable platen 17 is accurately positioned at the position close to and facing the print head 16. In addition, the guide groove 37
The guide direction (engagement direction) of a is substantially orthogonal to the direction in which the movable platen 17 escapes from the print head 16, and moreover, the first movable conveyance roller 20 and the first fixed conveyance roller 19 are provided.
It is set so as to be substantially orthogonal to the tangential direction to and. Therefore, the escape of the movable platen 17 can be prevented by the positioning guide portion 3
Since it is not allowed to be surely regulated by 7, it becomes possible to accurately position the first movable conveyance roller 20 with respect to the first fixed conveyance roller 19.

FIG. 12 is a perspective view of the branch body. As shown in this figure, the branch body 18 is provided on a branch plate 39 that forms a cut sheet transport path, and on the back surface of the branch plate 39, and rotatably supports the second fixed transport roller 21. The support member 40 and a fixed blade 41 provided on the support member 40 and for cutting the discharged portion of the roll paper P1 are configured. The branch body 18 configured in this manner is provided on the unit frame 27 so as to be rotatable back and forth via the branch body support shaft 42, and is movable by the presser springs 43 provided at both left and right ends of the branch body support shaft 42. It is biased toward the platen 17 side (the second movable conveyance roller 22 side). That is, the branch body 18 is configured to be retractable to a position that does not hinder the opening / closing operation of the lid body 28. Further, when the lid body 28 is closed, the urging force of the pressing spring 43 causes the second fixed conveyance roller 21 to move. Is brought into pressure contact with the second movable conveyance roller 22 to enable reliable paper conveyance. It should be noted that one end side of the pressing spring 43 is engaged with the groove portion on the unit frame 27 side, and the other end side thereof is the supporting member 40.
Is engaged with the convex portion 40a.

FIG. 13 is an overall perspective view of the printer unit showing the lid lock mechanism, FIG. 14 is a perspective view of the lid lock mechanism seen from the upper side, and FIG. 15 is a view of the lid lock mechanism seen from the lower side. It is a perspective view. As shown in these drawings, the lid lock mechanism 44 includes a lock lever 29 provided on the lid 28 side, a lock pin 30 provided on the unit frame 27 side, and a lid opening operation button 31. And a lock release lever 45 that moves the lock lever 29 to the lock release side in response to the operation of. The lock lever 29 has a hook portion 2 that can be engaged with the lock pin 30.
9a and an inclined guide portion 29b for automatically engaging with the lock pin 30, and are arranged on the tip side of the lid body 28 in a laterally distributed manner. The pair of left and right lock levers 29 are integrally connected at their base ends via a pipe-shaped connecting member 29c, and are rotatably supported by a lever support shaft 29d fitted in the connecting member 29c. The return spring 29e biases the lock pin in the engagement direction. The lock pin 30 is provided so as to project from an inner portion of the side frame 46 that constitutes the unit frame 27, and holds the lid body 28 in the closed position by engaging with the lock lever 29.

The lock release lever 45 has a first lever portion 45a connected to the lid opening operation button 31, and a second lever portion 45b connected to the lock lever 29 and the branch body 18.
And a connecting portion 45c that integrally connects the upper end portions of both lever portions 45a and 45b to each other, and is formed in a generally U-shape when viewed from the front. The first lever portion 45a is provided with the lid opening operation button 3
1 has a button engaging portion 45d for engaging with 1, and a rotation fulcrum hole 45e fitted to a rotation supporting portion 47a of a lock release lever supporting member 47, which will be described later, with the rotation fulcrum hole 45e as a fulcrum. It is supported so that it can rotate back and forth. Second lever portion 45b
Is a lock lever engaging portion 45f that engages with the engaging piece 29f of the right side lock lever 29, a branch body engaging portion 45g that engages with the convex portion 40a of the branch body 18, and a rotation fulcrum hole of the side frame 46. It has a cylindrical shaft-shaped burring portion 45h fitted to (not shown), and is supported so as to be rotatable back and forth with the burring portion 45h as a fulcrum. Further, the lid opening operation button 31 is slidably attached to the unit frame 27 in a linear direction, and in the present embodiment, it is linearly pushed downward.

FIG. 16 is a side view of the lid lock mechanism showing the lid fully closed state. As shown in this figure, when the lid 28 is in the fully closed state, the lock lever 29 moves the lock pin 30.
To hold the lid 28 in the closed position. Further, the branching body 18 presses the second fixed conveyance roller 21 against the second movable conveyance roller 22 by the urging force of the pressing spring 43.

FIG. 17 is a side view of the lid body locking mechanism immediately after the operation of the lid body opening operation button, and FIG. 18 is a side view of the lid body locking mechanism showing a state where the lid body starts the opening operation.
As shown in these figures, when the lid opening operation button 31 is linearly pressed when the lid 28 is in the fully closed state,
Upon receiving the operation force, the lock release lever 45 rotates forward. When the lock release lever 45 rotates forward, the second
The lock lever engaging portion 45f of the lever portion 45b pushes the engaging piece 29f of the right side lock lever 29 forward, and accordingly, the lock lever 29 operates toward the unlocking side and the lid 28
Allows the opening operation of. At the same time, the branch body engaging portion 45g of the second lever portion 35b is connected to the convex portion 40a of the branch body 18.
Push forward. As a result, the branch body 18 automatically retracts to a position where it does not hinder the opening and closing of the lid body 28, and a smooth opening operation of the lid body 28 is enabled.

FIG. 19A is a side view showing the rotation fulcrum portion of the lock release lever, FIG. 19B is a plan view showing the rotation support portion of the lock release lever support member, and FIG. The front view, (D), is a side view thereof. As shown in these figures, the first lever portion 45 of the lock release lever 45 is
A cutout portion 45i is formed in a, which is continuous with the rotation fulcrum hole 45e and which opens downward. On the other hand, the lock release lever support member 47 is resin-molded and integrally includes a rotation support portion 47a at the upper right portion thereof. Rotation support part 4
7a includes a plate-shaped narrow portion 47b into which the cutout portion 45i of the lock release lever 45 can fit, and a narrow portion 47b.
The protrusion 45b is provided on the right side and the notch portion 45i is formed in the narrow portion 47.
A rotation fulcrum shaft portion 47c which is allowed to be fitted into the rotation fulcrum hole 45e in a state of being fitted to the b is formed, and the rotation fulcrum shaft 47c forms a first lever portion 45a of the lock release lever 45. Is rotatably supported.

Next, the mounting structure of the lock release lever is shown in FIG.
This will be described with reference to 0 to 23. As shown in FIG. 19, first, the lock release lever 45 is set in the forward tilted position (outside the normal rotation range), and the cutout portion 45i of the first lever portion 45a is set to the narrow portion 47b of the lock release lever support member 47. Fit from above (Fig. 20). Next, the lock release lever 45 is slid to the right, the rotation fulcrum hole 45e of the first lever portion 45a is fitted into the rotation fulcrum shaft portion 47c of the lock release lever support member 47, and the second lever portion 45 is also inserted.
The burring portion 45h of b is fitted into the rotation fulcrum hole of the side frame 46 (in FIG. 20). Next, the lock release lever 45 is rotated within the normal rotation range, and the engagement protrusion 45j formed on the left end portion of the lock release lever 45 is engaged with the stopper portion 46a formed on the side frame 46 ( 22). In this state, the second lever portion 45
The b is brought into contact with the side frame 46 from the left side, and the engaging projection 45j is engaged with the stopper portion 46a from the right side, whereby the lateral movement of the lock release lever 45 is restricted. Next, the lid opening operation button 31 is clicked on the unit frame 2
7 is attached so that it can slide up and down (Fig. 23). As a result, the rotation of the lock release lever 45 out of the normal rotation range is restricted by the lid opening operation button 31.

As described above, according to this embodiment, the printer 10 has a housing (cover 12,
Unit frame 27), a lid 28 that opens and closes the opening 26 of the housing, the roll paper P1 and the cut sheet P2
A print head 16 that prints on the housing, and a branching body 18 that is provided at a position downstream of the print head 16 on the housing side and that branches the roll paper P1 and the cut sheet P2, A lid opening operation button 31 provided on the housing side and operated in a linear direction, and a lid locking mechanism 44 for locking the lid 28 at the closed position. In addition, the opening operation of the lid body 28 is permitted according to the operation of the lid body opening operation button 31, and the branch body 18 is moved to the retreat side. That is, the branch body 1 that branches the roll paper P1 and the cut paper P2 at the downstream position of the print head 16.
8 is provided, the branch body 18 is automatically retracted to a position that does not hinder the opening and closing of the lid body 28 during the opening operation of the lid body 28, so that the lid body 28 can be smoothly opened. It is possible to prevent the branch body 18 from being damaged, and moreover, unlock the lid body 28 and retract the branch body 18 according to the linear operation of the lid opening operation button 31. Thereby, the operability at the time of the lid opening operation can be improved.

The lid lock mechanism 44 is provided with a lock pin 30 provided on the housing side and a lock lever rotatably provided on the lid 28 side so as to be engageable with and disengageable from the lock pin 30. 29 and a lock release lever 45 that is rotatably provided on the housing side. The lock lever 29 is operated to the lock release side in response to the operation of the lid opening operation button 31, and the branch body is also provided. 18 is operated to the retreat side. That is, while the lid opening operation button 31 is operated linearly, by operating the lock lever 29 and the branching body 18 via the rotary lock release lever 45, the lid opening operation button 31 can be operated. It is possible to reduce the operating force and further improve the operability when the lid is opened.

Further, the movable platen 17 rotatably provided on the lid 28 is retracted from the close facing position of the print head 16 with the opening operation of the lid 28, and
Since the print head 16 is advanced toward the close proximity position with the closing operation of the lid body 28, interference between the branch body 18 and the movable platen 17 when the lid body is opened and closed is surely avoided, and the lid body opening operation is performed. The smoothness of time can be further enhanced.

A second movable conveyance roller 21 provided on the branching body 18 and a second movable conveyance roller provided on the movable platen 17 for conveying the roll paper P1 between the second fixed conveyance roller 21 and the second fixed conveyance roller 21. Since the roller 22 is further provided, the roll paper P1 can be conveyed on the downstream side of the print head 16 to prevent the roll paper P1 from slackening, and moreover, the branch body 1
Since 8 also serves as a support member for the second fixed conveyance roller 21, the number of parts can be reduced and the structure can be simplified.

Further, since the branch body 18 is configured to be rotatable in the advancing / retreating direction with respect to the second movable conveying roller 22, and is biased in the advancing direction by the pressing spring 43, the branch body 18 is moved. The smooth retracting operation is not permitted, and the pressing force of the pressing spring 43 can reliably press the paper.

Further, the branch body 18 is formed by the roll paper P.
Since the fixed blade 41 for cutting 1 is provided, the branch body 1
8 is also used as a support member for the fixed blade 41, so that the number of parts can be reduced and the structure can be simplified.

The lock release lever 45 has a first lever portion 45a connected to the lid opening operation button 31.
A second lever portion 45b that is connected to the lock lever 29 and the branch body 18, and a connecting portion 45c that integrally connects the first and second lever portions 45a and 45b. First and second lever portions 45a, 45
Since b is pivotally supported, the strength of the lock release lever 45 can be increased, the smooth operation of the lock release lever 45 can be performed, and the operability during the lid opening operation can be further improved.

Further, the lock release lever support portion (the lock release lever support member 47 and the side frame 46) for rotatably supporting the lock release lever 45 is provided in the lateral direction of the lock release lever 45 outside the normal rotation range. A rotation support portion 47a that allows the lock release lever 45 to be attached from the above position, and a stopper portion 46a that restricts the lateral movement of the lock release lever 45 within the normal rotation range. Since the outward rotation is restricted by the lid opening operation button 31, a dedicated member for restricting the lateral movement of the lock release lever 45 is unnecessary, and as a result, the number of parts and the number of assembly steps can be reduced. Not only that, but the structure can be simplified.

Further, the first lever portion 45a has a cutout portion 45i continuous with the rotation fulcrum hole 45e, while the rotation support portion 47a has a narrow width portion into which the cutout portion 45i can be fitted. 47b and a rotation fulcrum provided laterally protruding from the narrow width portion 47b and allowed to be fitted into the rotation fulcrum hole 45e in a state where the notch portion 45i is fitted in the narrow width portion 47b. Since the shaft 47c is provided, the lock release lever 45
The lock release lever 45 can be attached to the rotation support portion 47a with a simple structure such that the cutout portion 45i is formed in the lower portion and the narrow portion 47b is formed in the rotation support portion 47a.

Although one embodiment of the present invention has been described above with reference to the drawings, the present invention is not limited to the matters shown in the above embodiment, and the claims and the detailed description of the invention, and It includes a range in which those skilled in the art can make changes and applications based on well-known techniques.

[0043]

As described above, according to the present invention, although the branching body for branching the continuous sheet and the single-cut sheet is provided at the downstream position of the print head, the above-mentioned operation is performed when the lid is opened. By automatically retracting the branch body to a position that does not hinder the opening and closing of the lid body, it is possible to smoothly open the lid body and prevent damage to the branch body. By unlocking the lid body and retracting the branch body in accordance with the linear operation of the opening operation button, the operability during the lid opening operation can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a closed state of a lid of a printer.

FIG. 2 is a perspective view showing an open state of a lid of the printer.

FIG. 3 is a perspective view showing a closed state of a lid of the printer unit.

FIG. 4 is a perspective view showing an open state of a lid of the printer unit.

FIG. 5 is a side sectional view of the printer unit.

FIG. 6 is a side view of the printer unit in a state where the lid body is fully opened.

FIG. 7 is a side view of the printer unit showing a lid half-opened state.

FIG. 8 is a side view of the printer unit showing a state in which the engagement lever contacts the guide member.

FIG. 9 is a side view of the printer unit showing a state where the movable platen has started to rotate.

FIG. 10 is a side view of the printer unit showing a state immediately before the lid reaches the fully closed position.

FIG. 11 is a side view of the printer unit showing a lid fully closed state.

FIG. 12 is a perspective view of a branch body.

FIG. 13 is an overall perspective view of a printer unit showing a lid lock mechanism.

FIG. 14 is a perspective view of the lid lock mechanism as viewed from above.

FIG. 15 is a perspective view of the lid lock mechanism as viewed from below.

FIG. 16 is a side view of the lid lock mechanism showing the lid fully closed state.

FIG. 17 is a side view of the lid lock mechanism immediately after the lid opening operation button is operated.

FIG. 18 is a side view of the lid lock mechanism showing a state in which the lid has started the opening operation.

19A is a side view showing a rotation fulcrum portion of a lock release lever, FIG. 19B is a plan view showing a rotation support portion of a lock release lever support member, FIG. 19C is a front view thereof, and FIG. ) Is a side view thereof.

FIG. 20 is a diagram showing a procedure for attaching the lock release lever.

FIG. 21 is a view showing a procedure for attaching the lock release lever.

FIG. 22 is a view showing a procedure for attaching the lock release lever.

FIG. 23 is a diagram showing a procedure for attaching the lock release lever.

[Explanation of symbols] P1 roll paper P2 cut sheet 10 Printer 16 print head 17 Movable platen 18 branched bodies 21 Second fixed conveyance roller 22 Second movable transport roller 26 opening 27 unit frame 28 Lid 29 Lock lever 30 lock pins 31 Lid opening operation button 41 fixed blade 43 Presser spring 44 Lid lock mechanism 45 Lock release lever 45a First lever part 45b Second lever part 45c connection part 45i cutout 46 side frame 46a Stopper part 47 Lock release lever support member 47a Rotation support part 47b Narrow part 47c Rotating fulcrum shaft

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 2C058 AB12 AE02 AE04 AF03 AF06                       AF20 AF23 AF31 AF45 AF51                       AF65 DC04 DC13 DC22 LA03                       LA13 LB03                 2C061 AS02 AS06 BB10 CD07 CD14                 3F053 EA05 EC02 EC07

Claims (9)

[Claims] 1. A housing for accommodating continuous sheets, a lid for opening and closing an opening of the housing, a print head for printing on the continuous sheets and cut sheets, and the printing on the housing side. A branching body that is provided at a position downstream of the head and that branches the continuous sheet and the single-cut sheet, and that can be retracted to a position that does not hinder the opening and closing of the lid, and is provided on the housing side. A lid opening operation button that is operated in a linear direction, and a lid locking mechanism that locks the lid at a closed position, and allows the opening operation of the lid according to the operation of the lid opening operation button. In addition, the printer for moving the branch body to the retreat side is provided. 2. The lid lock mechanism includes: a lock pin provided on the housing side; a lock lever rotatably provided on the lid side; A lock release lever provided rotatably, wherein the lock lever is operated to the lock release side and the branch body is operated to the retreat side in accordance with the operation of the lid opening operation button. The printer according to claim 1, further comprising a printer. 3. A movable platen rotatably provided on the lid body, the platen being retracted from the close proximity position of the print head when the lid body is opened, and the lid body being closed. Along with this, there is further provided a unit that advances toward a position in which the print head closely faces each other.
The printer described in. 4. A stationary-side transport roller provided on the branch body, and a movable-side transport roller provided on the movable platen and configured to transport the continuous sheet between the stationary-side transport roller and the fixed-side transport roller. The printer according to claim 1, wherein the printer is a printer. 5. The branching body is configured to be rotatable in an advancing / retreating direction with respect to the movable side transport roller, and is biased in an advancing direction by a pressing spring. The printer according to any one of 1. 6. The branching body comprises a fixed blade for cutting the continuous sheet.
5. The printer according to any one of 5. 7. The lock release lever includes a first lever portion linked to the lid opening operation button, a second lever portion linked to the lock lever and the branch body, and the first and second lock levers. 7. The printer according to claim 1, wherein the printer is formed by including a connecting portion that integrally connects the lever portions, and the first and second lever portions are rotatably supported. 8. A lock release lever support portion that rotatably supports the lock release lever includes a rotation support portion that allows lateral attachment of the lock release lever outside a normal rotation range, and a normal rotation support portion. A stopper portion for restricting the lateral movement of the lock release lever within a movement range, and further, rotation of the lock release lever outside the normal rotation range is restricted by the lid opening operation button. The printer according to claim 1, wherein the printer is a printer. 9. The first or second lever portion includes a cutout portion that is continuous with the rotation fulcrum hole, and the rotation support portion includes a narrow portion into which the cutout portion can fit. A rotation fulcrum shaft portion that is provided so as to project laterally from the narrow portion and that is allowed to be fitted into the rotation fulcrum hole in a state where the cutout portion is fitted in the narrow portion. The printer according to claim 1, wherein the printer is a printer.