JPH0611810Y2 - Printer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a printer having a mechanism for cutting printed printing paper.

[Prior Art] A printer that cuts a print sheet by intersecting a movable blade with a fixed blade that supports one side of the print sheet printed by the print section has a position where the print sheet is cut and a print section. Paper jams may occur between them. Therefore, in the conventional printer, a member that supports the movable blade is rotatably provided on the machine frame that supports the printing unit and the fixed blade so as to remove the printing paper causing the paper jam, and supports the movable blade. The member (rotating frame) and the machine frame are screwed to each other with a screw or the like, and when a paper jam occurs, the screw is removed and the rotating frame is rotated to expose the paper jam portion.

[Problems to be Solved by the Invention] However, since this printer is mounted on, for example, a cash register, a parking ticket issuing device, and the like, and is arranged in a narrow space adjacent to other devices and a housing, the printer is not easily operated. When rotating the moving frame, it was very difficult to attach and detach the screw.

[Object of the Invention] The present invention has been made in view of the above circumstances, and an object thereof is to easily rotate and fix a rotating frame that supports a movable blade without attaching or detaching a screw. In the provision of printers.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a paper feeding mechanism for feeding a printing paper and a printing paper feeding side of the paper feeding mechanism. A printing unit for printing on, a machine frame that supports the paper feed mechanism and the printing unit, and a fixed blade that is supported by the machine frame and supports one surface of the printing paper printed by the printing unit. A movable blade that is movably provided so as to move and intersect the print sheet and the fixed blade, and that cuts the print sheet in cooperation with the fixed blade; and the movable blade that supports the movable blade. Is provided on the machine frame so as to be slidable parallel to the projecting direction of the print sheet, and when slidable, is provided so as to be rotatable about an axis extending in a direction parallel to the print sheet and orthogonal to the feeding direction thereof. The pivoting frame and the pivoting frame are locked so that the pivoting frame is slidable in a direction different from the projecting direction of the moving blade so that the moving blade and the fixed blade face each other. Locking means for separating the rotary frame from the locked state by sliding the rotary frame in the projecting direction of the movable blade, and a biasing means for biasing the rotary frame in a direction different from the projecting direction of the movable blade. It is composed of a means.

[Operation] By overcoming the urging force of the urging means by the rotating frame and sliding it in the protruding direction of the movable blade, the engagement state of the engagement means is released. Then, the rotating frame becomes rotatable, and the passage of the printing paper between the cutting position of the printing paper and the printing unit can be opened.

By arranging the rotating frame rotatably supported by the machine frame so that the movable blade and the fixed blade face each other, and by the action of the biasing means, the rotating frame is slid to a side different from the protruding direction of the movable blade. The latching means is latched, and the rotary frame is non-rotatably locked to the machine frame.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

1 to 4 show a printer to which the present invention is applied, which is installed in a cash register.

Two printing papers 2 and 3 wound in a roll shape to be printed on the printer 1 (hereinafter, the first printing paper 2 and the second printing paper 3)
Is rotatably supported by a paper support portion 6 formed by a rear machine frame 4b and a partition wall 5.

Next to the front side (upper right side in FIG. 1) of the sheet support portion 6 on the side supporting the first printing paper 2, from the rear side (lower left side in FIG. 1) to the front, from the upper side to the lower side. A first lower guide plate 7 that is inclined and supports the surface of the first printing paper 2 (the surface on which printing is performed) is supported by the rear machine frame 4b and the partition wall 5. On the upper side of the first lower guide plate 7, the first lower guide plate 7
A first upper guide plate 9 supporting the back surface of the first printing paper 2 and forming a first passage 8 for passing the first printing paper 2 between the first lower guide plate 7 and the first lower guide plate 7. It is supported by the machine casing 4b. A first feed roller 10, which partially protrudes downward from the lower surface of the first upper guide plate 9 and gives a feed motion to the first print sheet 2, is provided at the front adjacent portion of the first upper guide plate 9 to the rear machine frame 4b and the partition. It is rotatably supported on the wall 5. A first pressing roller 11 for urging the first feeding roller 10 is rotatably supported by a first lower guide plate 7 below the first feeding roller 10. First lower guide plate at a position between the first printing paper 2 and the first feed roller 10 and the first pressing roller 11
A first drive motor 12 for driving the first feed roller 10 is arranged at a position on the opposite side of the surface of 7 which supports the first printing paper 2. A first drive gear 13 is attached to the output shaft of the first drive motor 12, and is attached to the end of the first feed roller 10 via a large diameter gear 14 and a small diameter gear 15 rotatably supported by the rear machine frame 4b. It meshes with the attached first driven gear 16. These first lower guide plate 7, first upper guide plate 9, first
The feed roller 10, the first pressing roller 11, the first drive motor 12, and the like constitute a first paper feed mechanism 17 for the first print paper 2.

On the other hand, at the adjacent portion on the front side of the paper support portion 6 on the side supporting the second printing paper 3, the second lower part supporting the surface of the second printing paper 3 is inclined from the upper side to the lower side from the rear to the front. The side guide plate 18 is supported by the rear machine frame 4b and the partition wall 5. The second lower guide plate 18 is disposed above the second lower guide plate 18 so as to face the second lower guide plate 18, and the first printing paper 2 is provided between the second lower guide plate 18 and the second lower guide plate 18.
A second upper guide plate 20 that forms a second passage 19 through which the back side of the second printing paper 3 is supported is supported by the rear machine frame 4b. A second feed roller 21 that projects partly below the lower surface of the second upper guide plate 20 and gives a feed movement to the second print sheet 3 is provided at the front adjacent portion of the second upper guide plate 20 and the rear machine frame 4b and the partition. It is rotatably supported on the wall 5. A second press roller 22 for urging the second feed roller 21 is rotatably supported by the second lower guide plate 18 at a position below the second feed roller 21. A second lower guide plate at a position between the second printing paper 3 and the second feed roller 21 and the second presser roller 22.
At a position on the opposite side of the surface supporting the second printing paper 3 of 18,
A second drive motor 23 for driving the second feed roller 21 is provided. A second drive gear 24 is attached to the output shaft of the second drive motor 23, and is attached to the end of the second feed roller 21 via a large diameter gear 25 and a small diameter gear 26 rotatably supported by the rear machine frame 4b. It meshes with the attached first driven gear (not shown). The second lower guide plate 18, the second upper guide plate 20, the second feed roller 21, the second pressing roller 22, the second drive motor 23, etc. constitute a second paper feed mechanism 27 for the second print paper 3. To be done.

First paper feeding mechanism 17 and second paper feeding mechanism 27
A platen 28, which is parallel to the first feed roller 10 and the second feed roller 21 and stands upright perpendicular to the bottom surface of the front machine frame 4a, is supported by the front machine frame 4a at the adjacent portion on the front side of the. ing. A carriage 30 that reciprocates a dot wire type print head 29 along the platen 28 is arranged on the front side of the platen 28, and the print head 29 can be replaced when the dot wire (not shown) is consumed. It is a thing. The front machine frame 4a is provided to support the ribbon cassette 33 so that the ink ribbon is arranged between the platen 28 and the print head 29. The platen 28, the print head 29, the carriage 30 and the like constitute a printing unit 34.

Above the platen 28 at the position where the first printing paper 2 is discharged, a receiving plate 35 standing upright in parallel with the first printing paper 2 is supported, and on the receiving plate 35 side of the first printing paper 2, First printing paper 2
A fixed blade 36 that supports the surface of the non-printed side of the is supported.

On the front side of the fixed blade 36 and above the print head 29, there is provided a gate-shaped rotating frame 37 formed so as not to obstruct the moving range of the print head 29. A support shaft 38 having an axis that is substantially parallel to the paper surface of the first printing paper 2 and is substantially orthogonal to the feeding direction of the first printing paper 2 is laid across the front machine frame 4a. A long hole 39 extending in the front-rear direction provided on the lower front side of the side wall is inserted into and supported by the support shaft 38, and is slid in the front-rear direction with respect to the front machine frame 4a, and is rotated around the support shaft 38. It is provided in.

A support plate 37a is arranged on the upper wall of the rotating frame 37 with a space therebetween, and a movable blade 40 that cuts the first printing paper 2 in cooperation with the fixed blade 36 is provided on the lower surface of the support plate 37a. Is provided so that it can slide back and forth. The movable blade 40 moves and intersects with the first printing paper 2 and the fixed blade 36 by the operation of the electromagnetic solenoid 41 attached to the rotary frame 37 and the connection set 42 for changing / amplifying the movement direction of the electromagnetic solenoid 41. . Also, the rotating frame 37
A stamp 43 for imprinting a store name or the like on the first printing paper 2 by the action of an electromagnetic solenoid (not shown) is arranged between the and the moving blade 40.

In addition, the front machine frame 4a has a protrusion protruding horizontally on its side surface.
44 is provided, and at the lower rear portion of the side wall of the rotating frame 37, a substantially L-shaped hook 45 that extends downward and extends forward is provided. This hook 45 has a fixed blade 36
And the movable blade 40 face each other, by sliding the rotary frame 37 forward (away from the fixed blade 36), the protrusion
The engagement state with the projection 44 is released at a position where it is engaged with the projection 44 and the rotation frame 37 is slid backward (in the direction of approaching the fixed blade 36). The protrusions 44 and the hooks 45 constitute the hooking means of the present invention.

A spiral spring 46, which is a biasing means, is supported at a front intermediate position on the side wall of the rotating frame 37. One end of the spiral spring 46 is locked to the upper surface of the rotating frame 37 and the other end is supported. It is hooked on the shaft 38 and urges the rotating frame 37 forward.

A take-up cylinder 47 is movably supported at a position above the paper support portion 6 on the side supporting the second print paper 3, and the take-up cylinder 47 interlocks with the second large-diameter gear 25. Second printing that is rotationally driven through the side pulley 48, the belt 49, the upper pulley 50, the interlocking gear 51 that interlocks with the upper pulley 50, and the winding cylinder gear 52 that interlocks with the winding cylinder 47, and that has passed through the printing unit 34. Paper 3
It is provided to wind up.

Next, the operation of the printer 1 having the above configuration will be described.

The first printing paper 2 is stored in the paper support portion 6, the leading end of the paper is inserted into the first passage 8 and the leading end of the paper is guided between the first feeding roller 10 and the first pressing roller 11, and the first driving is performed. By driving the motor 12, the first print sheet 2 is sent out between the platen 28 and the print head 29.

On the other hand, the second printing paper 3 is stored in the paper support portion 6, the leading end of the paper is inserted into the second passage 19, and the leading end of the paper is fed by the second feed roller.
21 and the second presser roller 22 to guide the second drive motor 23
The second printing paper 3 is fed between the platen 28 and the print head 29 by driving the.

Both the first printing paper 2 and the second printing paper 3 are platens
When the print head 29 is driven at a position between the first print paper 2 and the second print paper 29,
Printing is performed on the printing paper 3.

By fixing the front end of the second printing paper 3 to the winding cylinder 47 in advance, the printed second printing paper 3 is sequentially wound around the winding cylinder 47.

The printed first printing paper 2 is sent upward along the fixed blade 36, the electromagnetic solenoid 41 is energized every time a receipt for one time is issued, and the moving blade 40 moves the first printing paper 2 and the fixed blade 36. The first printing paper 2 is cut at the intersection with. At the time of this cutting, the stamp 43 operates to perform stamp printing on the starting end portion of the next receipt.

During the above operation, when a paper jam occurs between the cutting portion where the fixed blade 36 and the movable blade 40 intersect and the printing portion 34, or when the print head 29 is replaced, the ribbon cassette 33 is pulled up and removed. After that, the rotation frame 37 overcomes the spring force of the spiral spring 46 and slides backward to release the hooked state of the protrusion 44 and the hook 45, and the rear side of the rotation frame 37 is lifted upward. As a result, as shown in FIG.
Since the upper portion of the printing unit 34 is rotated so as to be released, the paper jam generated between the cutting unit and the printing unit 34 can be easily removed. Further, the print head 29 can be easily replaced.

When the rotating frame 37 is hooked on the front machine frame 4a, the rotating frame 37 is rotated so as to close the upper part of the printing portion, and the arcuate inclined surface of the tip of the hook 45 is applied to the protrusion 44. Then, when the hook 45 is rotated so as to be pressed with a larger force, the cam action of the arc-shaped inclined surface of the hook 45 causes the rotating frame 37 to overcome the spring force of the spiral spring 46 and slide backward. At the same time, when the fixed blade 36 and the movable blade 40 are positioned to face each other, the pivoting frame 37 slides forward by the action of the spiral spring 46, and the projection 44 and the hook 45 are hooked.

In the above embodiment, the example in which the printing paper is sent out upward has been shown, but it may be sent out in other directions such as downward and sideward.

Further, in the above-described embodiment, the example in which the dot matrix is used for the print head is shown, but other print heads such as a thermographic type may be used.

Furthermore, in the above-described embodiment, the present invention is applied to a cash register, but it may be applied to other printers such as a printer that issues parking tickets, slips, and numbered tickets.

[Advantages of the Invention] With the present invention having the above-described configuration, even if the printer is installed in a narrow space such as the main body case of the cash register, the rotary frame that supports the movable blade can be easily placed at a predetermined position. Since it can be hooked and rotated on the side, obstacles such as a paper jam can be easily eliminated.

[Brief description of drawings]

1 and 2 are perspective views of a printer mounted on a cash register, FIG. 3 is a top view of the printer, and FIG. 4 is a side view of the printer. In the figure, 2 ... first printing paper, 4a ... front machine frame, 4b ... rear machine frame, 17 ... first paper feeding mechanism, 34 ... printing unit,
36-fixed blade, 37-rotating frame, 40-moving blade, 44-projection, 45-hook, 46- spiral spring

Claims (1)

[Scope of utility model registration request] 1. A paper feeding mechanism for feeding a printing paper; (b) a printing unit provided on the printing paper feeding side of the paper feeding mechanism for printing on the printing paper; A machine frame that supports the paper feed mechanism and the printing unit, (d) a fixed blade that is supported by the machine frame and supports one surface of the printing paper printed by the printing unit, and (e) the A movable blade that is movably provided so as to move and intersect with the print sheet and the fixed blade, and that cuts the print sheet in cooperation with the fixed blade, and (f) supports the movable blade and moves the movable blade. It is provided on the machine frame so as to be slidable parallel to the protruding direction of the blade, and when sliding, it is rotatable about an axis extending in a direction parallel to the printing paper and orthogonal to the feeding direction thereof. The rotation frame provided, and (g) the rotation frame The movable blade and the fixed blade are non-rotatably locked in a state where they face each other at a position slid in a direction different from the protruding direction of the blade, and the rotating frame slides in the protruding direction of the movable blade. The printer comprises: a latching means for releasing the latching state from the latched state; and (h) a biasing means for biasing the rotary frame in a direction different from the projecting direction of the movable blade.