JP3651103B2 - Printer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a printer incorporated in a cash register or the like.
[0002]
[Prior art]
5 to 9 show a conventional example of a printer incorporated in a cash register or the like.
[0003]
This type of printer 1 is a so-called dot impact printer, as shown in FIG. 6, a printer main body 3 to which a ribbon cassette 2 can be attached and detached, a take-up reel 16 for automatically winding recording paper, and as shown in FIG. It is configured by a supply frame 25 for supplying recording paper.
[0004]
As shown in FIG. 9, the printer main body 3 includes a printing mechanism 9 that reciprocates a carriage 6 that supports the printing head 5 in the width direction of the recording paper 7, 8, and a recording paper 7, 8 is provided with a paper feed mechanism 10 for feeding 8 and a drive motor 11 which is a drive source common to the print mechanism 9 and the paper feed mechanism 10.
[0005]
On the other hand, the clamshell movable portion 4 is provided to remove the paper when a paper jam or the like occurs, and as shown in FIGS. 7 and 8, the paper feed port 13 disposed behind the printer. , 14 and a printing position, the paper path formed by the upper paper guide and the lower paper guide is exposed to the upper rear position of the printer body 3 so as to be rotatable.
[0006]
The above-mentioned recording paper 7 is a journal paper for storing records on the store side in order to manage sales and inventory, and the recording paper 7 wound in a roll shape as shown in FIG. As shown in FIG. 6, one end of the winding is sequentially wound on the take-up reel 16 attached to the rear portion of the printer body 3 through the upper portion of the clamshell movable portion 4 while being unraveled. The take-up reel 16 is rotationally driven by a take-up belt 17 interlocked with the paper feed mechanism 10.
[0007]
Further, as shown in FIG. 7, the paper feed ports 13 and 14 are arranged side by side at the rear of the printer, and the journal paper 7 and the receipt paper 8 are fed into these paper feed ports 13 and 14. A feeding roller shaft 22 is provided for assisting the operation.
[0008]
The feeding roller shaft 22 always rotates during operation of the printer so as to reduce the paper feeding load when the journal paper 7 and the receipt paper 8 are fed, and when the paper is tensioned by the paper feeding, the feeding roller shaft 22 is rotated. Friction is generated between the paper 22 and the paper, and the paper is fed out. The paper is supported by the frames on both sides of the printer body 3 to be rotatable.
[0009]
As shown in FIG. 8, the feeding roller shaft 22 is disposed at a position lower than the rotation center shaft 23 of the clamshell movable portion 4 so as not to interfere with the opened clamshell movable portion 4. ing. The stamp set 20 is positioned immediately below the paper path 24 fed by the feed roller shaft 22.
[0010]
As a supplementary explanation of the clamshell movable portion 4, a writing table 31 for correcting the printed content is generally formed on the upper surface portion through which the journal paper 7 passes as shown in FIG. A discharge port 31 a for the journal paper 7 is provided below the writing table 31.
[0011]
[Problems to be solved by the invention]
By the way, in the printer 1 described above, when the paper feeding operation is performed when the recording paper 7 in the supply frame 7 on the journal side is reduced and lightened, a phenomenon that the paper 1 is lifted in a roll shape occurs due to the paper scraping. The roll-shaped recording paper 7 is opposite to the rotation direction of the take-out reel 16 and the take-up reel 16, and the take-up reel 22 and the take-up reel provided at the inlet of the supply port 13 disposed on the back of the printer. If it is lifted up between the roll papers wound around 16, neither of them can be rotated and a locked state may occur, resulting in paper feeding failure. Therefore, the distance between the take-up reel 16 and the feeding roller shaft 22 is secured. There is a need to. In this conventional example, the position of the feed roller shaft 22 is set to a position considerably below the height of the take-up reel 16 in order not to increase the outer shape of the printer. However, it has been pointed out that the operation of inserting the paper into each of the paper feed openings 13 and 14 cannot be viewed from the front of the printer, and the handling is poor.
[0012]
In addition, it was pointed out that the stamp set 20 was not visible from the front of the printer, and that the handleability was poor.
[0013]
Accordingly, a first object of the present invention is to solve the above-mentioned problems, and it is possible to perform a paper insertion operation into a paper feed port of a printer while visually recognizing it from the front of the printer. Is to provide. A second object of the present invention is to solve the above-mentioned problem, and to provide a printer that can be attached / detached from the front of the printer while visually confirming the attachment / detachment of the stamp set and has excellent handling properties.
[0014]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention provides a supply unit that holds a recording sheet that is disposed at a rear lower position of a printer and includes a winding core, a paper feed port that guides the recording sheet into the printer, and a recording sheet A print head for printing on the paper, a paper feed mechanism for feeding the recording paper to a printing position by the print head, and a winding disposed above the printer for rotating the take-up reel for winding the recording paper printed by the print head. In a printer having a take-up mechanism, a protrusion that is below the take-up reel and between the outer periphery of the recording paper disposed in the supply unit and the paper feed port and is perpendicular to the recording paper traveling direction It is characterized by arranging.
[0015]
With the above configuration, even if the recording paper is lifted with the recording core remaining, it is hindered by the projections before coming into contact with the recording paper of the take-up reel. The recording paper 7 is loosened at that position.
[0016]
Further, the paper feed port is arranged at an upper portion of a printer having a paper removal movable portion, and the protrusion is arranged near the outer periphery of the recording paper accommodated in the supply portion.
[0017]
With the configuration described above, the outer periphery of the recording paper just received in the supply unit does not come into contact with the protrusions and become a load, and when it is easy to lock the recording paper on the take-up reel, the supply unit and the supply unit The point of intersection of the perpendicular line from the take-up reel to the paper path of the paper mouth is the strictest position, but the above configuration is the position where it is most difficult to lock. It is also possible to make it smaller. Furthermore, the position of the paper feed port can be improved to a relatively high position at the rear of the printer, whereby the operation of inserting the recording paper into the paper feed port at the rear of the printer is performed while being visually recognized from the front of the printer. This makes it possible to improve handling.
[0018]
Furthermore, the printer is characterized by including a stamp that is inserted and attached to the inside from the vicinity of the lower side of the paper feed port disposed at the upper part.
[0019]
With the above configuration, the stamp set can be attached to the printer while being visually recognized from the front side of the printer, and the handleability is improved.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
1 to 4 show an embodiment of a printer according to the present invention. FIG. 1 is a side view of the printer 35 according to the embodiment, and FIG. 2 is a view (plan view) as viewed from the arrow B in FIG. 3 is a cross-sectional view taken along the line C-C in FIG. 2, and FIG. 4 is a rear perspective view of the printer 35.
[0021]
The printer 35 of this embodiment is a dot impact printer incorporated in a cash register or the like. As shown in FIGS. 1, 2, and 4, a printer main body 38 to which the ribbon cassette 2 can be attached and detached, and a recording sheet automatically. Is constituted by a take-up reel 16 and a supply frame 25 for supplying recording paper.
[0022]
The printer main body 38 has a printing mechanism (not shown) for reciprocating the carriage for supporting the print head 5 in the width direction of the recording paper 7 and 8 and the print position by the print head 5 in the same manner as the conventional mechanism described above. A paper feed mechanism (not shown) for feeding the papers 7 and 8 and a drive motor 11 which is a drive source common to these printing mechanisms and paper feed mechanisms are provided.
[0023]
On the other hand, the clamshell movable portion 39 is a paper feeding mechanism of a platen 65, a paper feeding roller 66, and a paper pressing roller 67 that is in pressure contact with the platen 65, and an optional attachment paper 8 that is attached to the upper part of the paper feeding mechanism. An auto cutter mechanism 36 for cutting and an upper paper guide 62 made of resin are provided. The upper paper guide of the base is equipped with other components.
[0024]
The upper paper guide 62 is formed with a protrusion that engages with a hole disposed in the frame of the printer main body 38, and this protrusion is engaged with the hole to constitute the rotation center shaft 23 of the clamshell movable portion. The upper paper guide 62 is also formed with an unillustrated locking portion that engages with an unillustrated claw portion that is rotatably mounted on the printer body. With the above configuration, the upper paper guide 62 can be rotated by the printer main body 38 and is normally positioned at a fixed position by the claw portion and is rotated by releasing the engagement between the claw portion and the locking portion.
[0025]
As shown in FIG. 3, the clamshell movable portion 39 is a printer main body 38 for exposing the paper path 24 formed by the upper paper guide 62 and the lower paper guide 64 from the paper feed ports 40 and 41 at the rear of the printer to the printing position. It is equipped so that it can rotate at the position of the rear upper part. In FIG. 3, the clamshell movable part 39 indicated by a solid line indicates a closed state, and the clamshell movable part 39 indicated by an imaginary line indicates an open state.
[0026]
As shown in FIG. 1, the supply frame 25 is arranged in the lower part of the rear of the printer. The supply frame 25 accommodates recording sheets 7 and 8 before printing indicated by dotted lines in the drawing, and is a rotatable supply roller for reducing the supply load to the printer. 37.
[0027]
The back frame 33 is provided to reinforce the printer main body 38, and a protrusion 33 a perpendicular to the traveling direction of the recording paper 7 is disposed.
[0028]
The recording paper 7 fed to the paper feed slot 40 is a journal paper for storing records on the store side in order to manage sales and inventory, and the printed journal paper 7 is as shown in FIG. 1 and FIG. Then, the sheet is wound around the winding reel 16 attached to the rear portion of the printer main body 38 through the clamshell movable portion 39 in succession. The take-up reel 16 is rotationally driven by a take-up belt 17 interlocked with a paper feed mechanism in the printer main body 38. The recording paper 7 taken up on the take-up reel 16 gradually increases in diameter, and at the same time, the recording paper 7 in the supply frame 25 decreases, and when the paper scrape overcomes the weight of the remaining recording paper 7, the remaining recording The paper 7 is lifted toward the supply port 40 by a paper feeding operation. At this time, the projection 33a of the back frame 33 and the recording paper 7 wound on the take-up reel 16 are obstructed and no further upward is lifted, and the remaining recording paper 7 is loosened at that position.
[0029]
In this embodiment, the recording paper 7 having the maximum diameter to be used is described. However, when the recording paper 7 having a small diameter is used, the recording paper 7 wound around the take-up reel 16 and the supply port are used. The recording paper 7 that has become smaller between 40 does not become unrotatable.
[0030]
The recording paper 8 fed to the paper feed opening 41 is a receipt paper 8 to be delivered to the customer. The printed receipt paper 8 is a receipt provided on the upper surface of the clamshell movable portion 39 as in the conventional case. It is sent out to the discharge port 18.
[0031]
As shown in FIG. 4, a stamp set 20 for imprinting a store name or the like is detachably mounted below the paper feed port 41 through which the receipt paper 8 is fed. 3 is a cross-sectional view taken along the line C-C in FIG. 2, the stamp set 20 cannot be seen. However, in order to facilitate understanding of the insertion direction of the stamp set 20 and the arrangement relationship in the printer body, FIG. The position of the stamp set 20 viewed from the B direction in FIG. 3 is illustrated in FIG. 3 using a two-dot chain line.
[0032]
As shown in FIGS. 2 and 3, the paper feed ports 40 and 41 are arranged side by side at the rear part of the clamshell movable portion 39, and these paper feed ports 40 and 41 include journal paper. 7 and a feeding roller shaft 22 for feeding receipt paper 8 are provided. As shown in FIG. 3, the feed roller shaft 22 is disposed at a position raised by a predetermined amount from the rotation center shaft 23 of the clamshell movable portion 39, that is, at a position near the upper end of the rear portion of the clamshell movable portion 39. Has been.
[0033]
More specifically, the feed roller shaft 22 has a roller shaft drive gear 59 disposed on the clamshell movable portion 39 side, and rotates to a part 63 of the upper paper guide 62 that forms the paper feed ports 40 and 41. It is attached as possible. In this embodiment, the upper paper guide is elastically deformed so that it can be attached and detached. A transmission gear 60 that meshes with the roller shaft driving gear 59 and rotates the feed roller shaft 22 is provided on the rotation center shaft 23 of the clamshell movable portion 39 on the printer body 38 side. With this configuration, the feeding roller shaft 22 is rotationally driven by the rotational force of the drive motor 11 a provided on the printer body 38 side being transmitted to the roller shaft drive gear 59 via the transmission gear 60. The roller shaft drive gear 59 on the clamshell movable portion 39 side and the transmission gear 60 on the printer main body 38 side are arranged so that the meshed state is not released even when the clamshell movable portion 39 is opened. Has been.
[0034]
This transmission gear 60 may meet on the axis of the rotation center axis itself of the clamshell movable portion 39, or may be another part on the extension line of the rotation center axis. When the clamshell movable portion 39 is opened, the distance between the center axis of the roller shaft drive gear 59 and the center axis of the transmission gear 60 can be configured to be large as long as the meshing between both gears is not disengaged. is there.
[0035]
The stamp set 20 is located immediately below the paper path 24 fed by the feeding roller shaft 22.
[0036]
Next, the upper paper guide 62 will be described in detail. As shown in FIG. 3, a part 63 of the upper paper guide 62 located near the paper feed ports 40 and 41 at the rear of the printer regulates the downward direction of the recording paper. It functions as a lower paper guide. With this configuration, when the clamshell movable portion rotates around the rotation center shaft 23, the paper feed port forming portion 68 of the upper paper guide 62 is provided. Since the lower paper guide on the trajectory also rotates, it does not engage with the lower paper guide, and does not interfere with the rotation operation of the clamshell movable portion 39. Therefore, the clamshell movable portion 39 has a desired angle. It can rotate.
[0037]
In the printer 35 described above, the paper feed port at the rear of the printer is set at the rear of the clamshell movable portion, and the feed roller shaft for feeding the recording paper inserted into the paper feed port to the print head side is provided on the clamshell movable portion. With the configuration installed above the rotation center axis, the position of the paper feed port can be improved to a relatively high position at the rear of the printer, which allows the paper to be fed to the paper feed port at the rear of the printer. The insertion operation can be performed while visually recognizing from the front of the printer, and the handleability is improved.
[0038]
In addition, the stamp set 20 can be attached to the printer 35 while being visually recognized from the front of the printer, and handling is improved.
[0039]
Further, the position of the feeding roller shaft 22 is improved upward, so that the winding range of the paper around the feeding roller shaft 22 is increased, and the rotational torque transmitted to the feeding roller shaft 22 is recorded with less loss. It can be transmitted to the papers 7 and 8.
[0040]
【The invention's effect】
As described above, according to the present invention, the supply unit that holds the recording paper that is disposed at the lower rear position of the printer and has the winding core, the paper feed port that guides the recording paper to the inside of the printer, and the recording paper A print head for printing, a paper feed mechanism for feeding a recording paper to a printing position by the print head, and a take-up disposed above the printer that rotates a take-up reel for winding the recording paper printed by the print head In a printer having a mechanism, a path obstruction part that is below the take-up reel and that changes the path of the recording sheet to the rear of the printer between the outer periphery of the recording sheet disposed in the supply unit and the paper feed port. It is arranged.
[0041]
When configured as described above, even if the recording paper is lifted while remaining in the winding core, it is blocked by the path obstruction before contacting the recording paper of the take-up reel, so it does not lift upward any further, The remaining recording paper 7 is unraveled at that position.
[0042]
Further, the paper feed port is arranged at the upper part of the printer, and the path obstruction part is arranged near the outer periphery of the recording paper accommodated in the supply part.
[0043]
When configured as described above, the outer periphery of the recording paper just received in the supply unit does not come into contact with the path obstruction part and becomes a load, and when it is easy to lock the recording paper of the take-up reel, the supply unit The point of intersection of the vertical line from the take-up reel to the paper path of the paper feed slot is the strictest position. However, the above configuration is the position where locking is most difficult, and the take-up reel is brought closer. It is also possible to make it smaller. Furthermore, the position of the paper feed port can be improved to a relatively high position at the rear of the printer, whereby the operation of inserting the recording paper into the paper feed port at the rear of the printer is performed while being visually recognized from the front of the printer. This makes it possible to improve handling.
[0044]
Further, the printer includes a stamp that is attached to the inside from the vicinity of the paper feed port.
[0045]
With the above configuration, the stamp set can be attached to the printer while being visually recognized from the front side of the printer, and the handleability is improved.
[Brief description of the drawings]
FIG. 1 is a side view of an embodiment of a printer according to the present invention.
FIG. 2 is a plan view of an embodiment of a printer according to the present invention.
3 is a cross-sectional view taken along the line CC of FIG.
FIG. 4 is a perspective view of the embodiment of the present invention viewed from the rear side.
FIG. 5 is a side view of a conventional cash register printer.
6 is a perspective view showing an appearance of the cash register printer of FIG. 5. FIG.
7 is a perspective view seen from the rear side of the cash register printer of FIG. 5;
FIG. 8 is a side view of the main part showing the pivoting operation of the clamshell movable part shown in FIG. 5;
9 is an exploded perspective view of a main mechanism of the cash register printer of FIG. 5;
[Explanation of symbols]
5 Print Heads 7 and 8 Recording Paper 16 Take-up Reel 17 Take-up Belt 20 Stamp Set 22 Feeding Roller Shaft 24 Passage 25 Supply Frame 33 Back Frame 37 Supply Roller 38 Printer Main Body 39 Clamshell Moving Parts 40 and 41 Paper Feed Port 43 Cover 44 Writing stand 62 Upper paper guide 64 Lower paper guide

Claims (3)

A supply unit that holds a recording sheet provided with a winding core, is arranged at a lower rear position of the printer, a paper feed port that guides the recording sheet into the printer, a print head that prints on the recording sheet, and the print head In a printer comprising a paper feed mechanism for feeding the recording paper to a printing position, and a winding mechanism disposed above and behind the printer that rotates a take-up reel that winds up the recording paper printed by the print head ,
Protruding portions that are below the take-up reel and between the outer periphery of the recording paper disposed in the supply unit and the paper feed port and perpendicular to the recording paper traveling direction are disposed. Features printer.   The paper feeding port is disposed on an upper portion of a printer having a movable section for removing paper, and the protrusion is disposed near the outer periphery of the recording paper accommodated in the supply section. The printer according to 1.   The printer according to claim 1 or 2, further comprising a stamp that is inserted and attached to an inside from a lower vicinity of the paper feed port disposed at an upper portion.

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