JPS59198181A - Stamp-fitting mechanism for printer - Google Patents

Abstract

PURPOSE:To provide the titled mechanism having such a construction that the periphery of a printing head can be easily inspected, wherein an ink ribbon fitting plate is turned upwards by pushing an engaging and stopping member outwards, and a stamp, ink ribbon spools and a ribbon guide are spaced away from a printing head. CONSTITUTION:The stamp 13 is fitted to the ink ribbon fitting plate 8 together with the ink ribbon spools 6a, 6b, is positioned by an engaging recessed part 77 and an engaging projected part 78, and is engaged and stopped by the engaging and stopping members 79a, 79b. The member 79a is provided with a main engaging and stopping function, and the ink ribbon fitting plate 8 is turned upwards by pushing the member 79a outwards.

Description

[Detailed description of the invention] [Technical field of invention] The present invention relates to a stamp attachment function of a printer.

[Technical disadvantages of invention and its problems]

Printers with a stamp printing function generally have the stamp placed above the print head, but printers that use the ink ribbon method also need to place an ink ribbon spool behind the print head. be.

Therefore, the configuration becomes complicated from the top to the rear of the print head. Furthermore, when inspecting the area around the print head, it is necessary to remove both the stamp and the ink ribbon spool, making it troublesome to attach and detach them.

[Purpose of the invention]

The present invention has been made based on the above circumstances, and an object of the present invention is to provide a mechanism for attaching a stamp to a printer, which is simple in structure, and allows easy attachment and detachment of stamps and ink ribbon spools. It is in.

[Summary of the invention]

A paper press roller support mechanism for a printer according to the present invention includes a frame that takes in a platen, a print head disposed opposite to the platen, a stamp and an ink ribbon spool, and is movably attached to the frame. an ink ribbon receptacle plate attached thereto for bringing the stamp close to the print head to enable printing of the stamp on print paper or for moving the stamp away from the print head to enable inspection of the print head periphery; and the stamp. a positioning means for positioning the ink ribbon mounting plate in a state where the ink ribbon mounting plate is brought close to the print head, and a locking member for locking the ink ribbon mounting plate at the position positioned by the positioning means;
An ink guide is formed integrally with this locking member and is guided out from the ink ribbon spool and interposed between the platen and the print head.
! [It is a commandment.]

With the configuration shown below, the stamp is attached to the ink ribbon attachment plate together with the ink ribbon spool, so the configuration of these attachment parts becomes simple. In addition, the stamp and ink ribbon can be moved away from the printing machine 11 by simply rotating the ink ribbon handle N plate.
, [1 bit゛l\... 11 fixed 1υ part can be easily inspected↑
Ru.

(Embodiments of the invention) Hereinafter, -J, '16! of the present invention! For example, see drawings (see 1
).

Figure 1 shows the outer leg of the printer (printed on roll paper 1 = Kawagumi OJ and serial paper).
, lb is h: (1) -m, 2 is (receipt paper for common supply, 7 yen 1-t, ++; h , 5 is an ink ribbon mounting base equipped with ink ribbon spools 6a and 6b, and the ink ribbon 60 is wound alternately between both spools 68 and 6b. 7 is a paper supply kite, 8 is a rotatably mounted stamp mounting plate.

The paper holder 2 is provided with a winding shaft 9 for winding the printed journal paper.The platen 4 is provided with a medium-read paper guide 10 for guiding the journal paper to the winding shaft 9. A stamp stand 11 is integrally formed on the side of this guide 10. Also, a stamp 13 that moves forward and backward while being guided by a stamp guide 12 is mounted on the stamp mounting plate 8, facing the stamp stand 11. Further, an electromagnetic plunger 15 is attached (pushed) for driving the stamp 13 and cutter (not shown) via a lever 14.

The print head 3 is attached to a carrier 17 which is slidably attached to a carrier guide shaft 16 as shown in FIG. The left and right frames Ia and 1b each include the ink ribbon mounting base 5, the carrier guide shaft 16,
The platen 4 and paper supply guide 7 are integrally connected. Five ink ribbon mounts 5 connect the front ends of the frames 1a and 1b. Sunawa／:)、ノ■Right flair l\121
As shown in Fig. 2, there are four through holes 18 arranged in the front, rear, left and right sides of each of the front ends of ゜1h. There is one through hole (
]. Therefore, when using narrow paper, the through hole 19 of the ink ribbon mount 5 should be replaced with the outside through hole 18 of each frame 1a, 1h, and when using wide paper, the inside through hole '18, both are screwed from the J= direction.

The carrier guide shaft 16 connects the connecting pieces 20 formed at the intermediate part of one frame 1a, 1b.

That is, the carrier kite shaft 16 has screw holes at both shaft ends. 3: Connect the carrier guide shaft 16 to both connecting pieces 20.
By inserting the screws between them and tightening them from the sides of the connecting piece 20, the two connecting pieces 2o are connected at a predetermined interval.
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f7) The saw-bent pieces 21 provided at the rear end are connected from above by screws II and J.

The ink ribbon holder 5 has an ink ribbon 6- A spool stand 22a for loading boules 6a and 5b.

A ribbon feeding mechanism 23 is provided which selectively drives the spools 22 and spool stands 22a, 22+ for a fixed period of time. It is made to protrude to the outside of the ink ribbon mounting base 5.

A carrier drive shaft 25 for reciprocating the carrier 17 along the carrier kite shaft 16 is attached below the carrier guide shaft 16 .

This shaft 25 has an endless ring 26 on its outer periphery, and as shown in FIG. 8, a cam follower 26a provided on the carrier 17 is engaged with the ring 26 to rotate in a fixed direction. The carrier 17 is moved back and forth.

Returning to FIG. 1 again, there is a gear 27 on the outer surface of the frame 1b.
, 28, 29, an eccentric gear 30, etc. are arranged.

The gear 27 is attached to the end of the carrier drive shaft 25, and the rotational force of this gear 27 is transferred to the eccentric gear 3.
0 to the gears 2B and 29 in turn. Furthermore, an electric in-boot/jar 31 is attached to the outer surface of the frame 1b, and MffM engages an armature 32 moved by this plunger 31 with an engaging pin 33 protruding from the eccentric gear 30, thereby causing eccentricity. Gear 30 is held in a disengaged position relative to teeth 1127. 11. (In order to energize the plunger 31, remove the rear core 32 from the engagement pin 23. 4-)
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Also, Yamanaka 28 (, 2 (, 1') ln Ritoha :) /
The end of I is pivoted. 7, 2C Harino:, <nol
, I = 11.1 on the bar, as shown in Figs.
30, and remove the ink ribbon from the ID bin 35.
It fits freely into the elongated hole 37 provided at the side base of the t-table 1), and the circular engagement part 336--the mouth-shaped connecting part 211.11 of the ribbon feeding mechanism 23-- Then, the gear 28 rotates one rotation -46, and the coupling part 24 is rotated 111 and back by +1, and each time the coupling part 27'I rotates, the ribbon feeding mechanism 23 moves one of the spool bases '2' 2a or 22b. The ink ribbon 6 is rotated one pitch at a time to feed the ink ribbon 6.

A large diameter hole 37a into which a guide bin 35 can be inserted and removed is formed at one end of the elongated hole 37, as shown in FIG. 35 a
is formed as shown in FIG.

The carrier drive shaft 25 is the left and right frame 1a.

1b as shown in FIGS. 6 and 7.

4, each of the frames ia, 1b is provided with a fitting recess 38 at a position below the connecting piece 20 so as to open toward the front. A bearing 39 that fits into the fitting recess 38 is attached.

Further, an engagement recess 40 is formed at the opening edge of each fitting recess 38, and the engagement recess 40 of the left and right frames 1a, 1b is formed.
A retaining plate 41 is provided which is locked to. Therefore,
After fitting the bearings 39 at both ends of the carrier drive shaft 25 into the fitting recesses 38 of the left and right frames 1a, 1b from the front as shown in FIG.
By engaging the bearing 39 in the engagement recess 40 of the bearing 39 to prevent the bearing 39 from coming off, the bearing 39 is installed as shown in FIG. Also, a large-diameter gear /112 is attached to the end of the carrier drive shaft 250 opposite to the gear 27 (J), and this large-diameter gear 42 is rotationally driven by a motor 43 attached to the inside of one of the flares lx l a. The configuration is as follows.

The ink ribbon mount 5 has a carrier guide 44 bent at a substantially right angle as shown in FIG. 8 at its front edge.
This carrier guide 471 is located at the lower end of the carrier 17.
The layered piece 45 that slides onto the surface is the only thing you need to take out. Therefore, Ki1
The rear 17 is guided by the Kyrelia guide shaft 16 and the Kyrelia guide/I/I, and reciprocates as the carrier drive shaft 25 rotates.

The paper supply guide 7 feeds the receipt paper 43 and the original paper pulled out from the paper holder 2 between the platen 4 and the print head 3! As shown in FIG. 9 to FIG. 11, the guide plate 7I7 is placed 4% above the kite plate 46. These nofoid plates 46. l17 are all made of synthetic resin,
lr, 'concave toward f5/, Ito2. j: sea urchin 1
A gap is formed between both guide plates 46 and 4.7 to allow paper to pass through, and partition walls are provided on both sides and in the middle of the upper surface of the lower guide plate 46. 48 is formed. The middle partition wall 48 is the cash register 1
~It separates the paper insertion path from the journal paper insertion path. The lower guide plate 48 includes the left and right frames 1a,
It is screwed to 1b. In the figure, reference numeral 49 denotes an abrasion prevention body made of a metal plate, which has three arms 50, which are inserted from behind the lower guide plate 46 and attached to the top surface of each partition wall 48. I'm trying to position it.

In the figure, reference numeral 51 denotes a guide plate made of a thin metal plate, which is attached by being inserted into the front end of the lower guide plate 46, and allows the paper that has passed between the lower guide 46 and the upper guide 47 to pass between the platen 4 and the print head. 3.

In the figure, reference numeral 52 denotes a pair of paper feed rollers, and bearings 54 are attached to both ends of the roller shaft 53 of each roller 52. The roller shaft 53 is arranged on the lower surface side of the upper guide plate 47,
Each paper feed roller 52 is connected to the upper kite plate/17 by BQ l-
The paper can be introduced into the paper insertion path and the double-pull paper insertion path into the register 1 through the first opening [1 part]. 7t 8
It has a convex portion 55) as shown in FIGS. 10 and 11, and has a partition h? of the guide 46. Part of 48 [,j, upper guy 1~(k46 provided with part 11
As shown in FIG. l is pressed from above by the lower end surface of the platen 4, and the lower guide plate 46 is further pressed from above by a bearing 54. The upper kite plate 47 is also attached to the platen 4 as shown in FIG.
, and by attaching the platen 4 to the frames la and lb (-), the silk of the paper guide 7 \7 c t)
'A: 'i' Ijru, 1.) It is composed of -C. Above 1.1-7:); 1 outside 1) There are 5 borders at one end. -L [In the bundle! +7 is good II (
' +Li+ F, l, each lachi I tsu l-lv! In I'
,)71.1beforei1%,','r'X)',1
/' + (14 radial knit claws 1 supported by 2) 8 rotate by 11 pips each time the electromagnetic plunger 31 is energized. 1. It is composed of sea urchins.

As shown in FIG. 1, a pulley 59 is coaxially provided on the gear 29, and this pulley 59 and a pulley 60 attached to the side wall of the paper holder 2 are interlocked via a bell 1-61. That's what I do. A gear (not shown) coaxial with the pulley 60 is disposed inside the paper holder 2, and a gear 62 attached (pulled) to the winding shaft 9 is meshed with the tooth width of the gear (not shown). .Therefore, electromagnetic plunger 3
1 is energized and the gear 29 receives the rotational force of the carrier drive shaft 25 and rotates, the winding shaft 9 rotates by a certain amount.

12 and 13 show the dimensions of the pinch roller 63, which presses against the paper feed roller 52 from below. In the figure, reference numeral 64 denotes a binder attachment member which is bent into a cross-sectional shape, and this attachment member 64 has V-shaped image fitting portions 65 at both ends, respectively. Also, left and right frame I
A and 1b have square holes 6 into which both ends of the mounting member 640 are inserted.
6, and the lower edge of the square hole 66 has a V-shaped notch 13 formed at a portion corresponding to each of the V-shaped image joining portions 65.
- A supporting portion is provided, and the mounting member 64 is rotatably supported by the left and right frames ia and ib by engagement between the V-shaped image matching portion 66 and the supporting portion 67 as shown in FIG. Further, an operating piece 68 for manual operation is formed upward at one end of the mounting member 64, and a set of two locking pieces is formed on the other piece where the V-shaped image joining part 65 is not formed. A piece 69 is cut and formed.

Furthermore, an engagement hole 70 located between each set of locking pieces 69 and a set of two stopper protrusions 71 are provided. A pinch roller support plate 72 made of an elastic plate is inserted between each set of locking pieces 69 for installation. Each pinch roller support plate 72 is formed with an engaging piece 73 cut and raised from the lower surface side in the center, and this engaging piece 73 is engaged in the engaging hole 70, and one end is formed by two pieces. It is attached to the attachment member 64 in contact with the stopper protrusion 71 . Further, one support piece 74 extends in parallel from the other end of the pinch roller support plate 72, and both support pieces 74 are configured to support the shaft end of the pinch roller 63 from below. The pinch roller mounting member 64 is urged by two tension springs 75 to rotate in the direction of bringing the pinch roller 63 into contact with the paper feed roller 52.

FIG. 14 shows the state in which the stamp mounting plate 8 is attached to the ink ribbon mounting base 5.

That is, the stamp mounting plate 8 has left and right pivot pieces 76, and each pivot piece 76 is rotatably supported on the front end portions of the left and right frames 1a and 1b. Furthermore, engagement recesses 77 are formed on the left and right sides of the tip of the stamp mounting plate 8. This engagement recess 77 has a shallower V on the bottom surface of the recess which is cut out in the shape of a ].
It is formed by forming a shaped recess. On the other hand, the left and right frames 1a.

1h, at the upper end of each connecting piece 20, as shown in FIG.
As shown in (11), each connecting piece 20 has a positioning protrusion 78 that engages with the engaging recess 77, and synthetic resin engaging parts 11+A79a, 79b are screwed onto the outer surface of each connecting piece 20. Each of the locking members 79a and 79b has an ink ribbon guide 80 on which the ink ribbon 6 is wrapped.
They are integrally formed as shown in FIGS. 15(a) and 15(b).

One of the locking members 79a extends upwardly, and the engagement recess 7
A locking stepped portion 81 is provided near the stamp mounting plate 7 from above and reliably inhibits upward rotation of the stamp mounting plate 8. The other locking member 79b is also provided with a locking step 82 near the engagement recess 77 that is hooked from above.
This stepped portion 82 is an inclined surface, and the stamp mounting plate 8
It does not have sufficient retention function for Then, when the upper end of one engaging member 79a is pushed outward and the locking stepped portion 81 is removed from the stamp mounting plate 8, the holding function for the stamp mounting plate 8 is insufficient with only the other engaging member 79b. Therefore, the stamp mounting plate 8 can be opened upward. In other words, the stamp mounting plate 8 can be opened using one of the locking parts ttA.
This can be easily done by simply removing 79a.

Next, the operation will be explained.

Rolled receipt paper and journal paper are stored in the paper holder 2, and the leading edge of each paper is inserted between the paper feed roller 52 and the pinch roller 63 to drive the motor 43, thereby rotating the carrier drive shaft 25. . Also, the electromagnetic plunger 31 is energized, and the armature 32 is connected to the engagement pin 33.
When released, the eccentric gear 30 meshes with the gear 27 attached to the carrier drive shaft 25, thereby transmitting the rotational force of the carrier drive shaft 25 to the gears 28, 29.

When the electromagnetic plunger 31 is intermittently energized, the ratchet pawl 58 pivoted on the armature 32 feeds the ratchet gear 57 one pitch at a time, thereby allowing the receipt paper and journal paper to pass through the paper supply guide 7 to the platen 4. and the print head 3. At this time, the guide plate 51 comes to regulate the traveling direction of the paper. The electromagnetic plunger 31, the armature 32, and the ratchet pawl 58 are provided separately on the outer surfaces of the left and right frames 1a and 1b, making it possible to feed receipt paper and journal paper independently.

When the paper is positioned between the platen 4 and the print head 3, printing can be performed by driving the print head 3. However, for journal paper, first the leading edge of the paper is fixed to the winding shaft 9 (17). - By placing the windings on the winding shaft 9, the winding shaft 9 can be wound up one after another. Regarding receipt paper, the cutter operates by energizing the electromagnetic plunger 15 each time a receipt is issued, and the paper is cut off at an appropriate position.
At the same time, the stamp operates and the stamp is printed on the starting edge of the next receipt.

Moreover, each time the electromagnetic plunger 31 is energized, the gear 28 is
The ink ribbon 6 rotates, the ribbon feeding mechanism 23 operates, and the ink ribbon 6 is wound one pitch at a time onto one of the ink ribbon spools (for example, 6a). When the ink ribbon 6 is wound up to the end, the tension causes the ribbon feeding mechanism 23 to switch to the other ink ribbon spool (for example, 6b
) is the winding side.

According to the stamp attachment mechanism of the printer configured as described above, the stamp 13 is attached to the ink ribbon spool 6a,
Since it is attached to the ink ribbon mounting plate 8 along with 6b,
The configuration of these mounting portions, that is, from the top to the rear of the print head 3 is simple. Further, by pushing the locking member 79a outward, the ink ribbon mounting plate 8 can be easily rotated upward, and by rotating this, the stamp 13, the ink ribbon spools 6a, 6b, and the ribbon guide 80 are At the same time, it can be separated from the print head 3, and the peripheral area of the print head 3 can be easily inspected. Although a pair of locking members are provided on the left and right, one locking member 79a has a main locking function, and the other locking member 79b has only an auxiliary locking function. Stopping member 79
It is only necessary to cancel a, and the operation is extremely simple.

Further, the ink ribbon mounting plate 8 is positioned by the positioning means consisting of the engagement recess 77 and the positioning protrusion 78, and is locked by the locking members 79a and 79b.
Stamp positional accuracy is highly preserved.

〔Effect of the invention〕

As described above based on the embodiments, according to the present invention, it is possible to provide a stamp attachment mechanism for a printer that has a simple configuration and allows easy attachment and detachment of a stamp and an ink ribbon spool.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is an external perspective view of the printer, Fig. 2 is an exploded perspective view of the main parts of the printer, and Fig. 3 is a perspective view showing the peripheral part of the ribbon feeding mechanism. 4 is a partial sectional view showing the crank lever, and FIG. 5 is a side view showing the connecting portion between the crank lever and the ribbon feeding mechanism.
Figure 6 is an exploded perspective view of the area around the carrier drive shaft, Figure 7 is an assembled perspective view of the same area, Figure 8 is a partial sectional view of the area around the carrier, and Figure 9 is an exploded perspective view of the area around the paper supply guide. , 1st
Figure 0 is an exploded side view showing a part of the same part in cross section, No. 11
The figure is an assembled side view of the same part, Figure 12 is an exploded perspective view of the paper presser roller support mechanism, Figure 13 is a side view of the same part, and Figure 14
The figure is a perspective view showing the surrounding area of the stamp mounting plate, and Figure 15 (a
), (b) is a perspective view showing the left and right locking members, No. 16
Figures (a) and (b) are perspective views showing the relationship between the left and right members and the stamp mounting plate. Ia, 1b...Frame, 3...Print head, 4.
...Platen, 5a, 6b...Ink ribbon spool, 8...Stamp mounting plate, 13...Stamp, 7
7... Engaging recess, 78... Engaging protrusion, 80... Ribbon guide. Applicant's agent Patent attorney Takehiko Suzue 21- (3:°□36゜□

Claims (2)

[Claims] (1) A frame to which a platen is attached, a print head disposed opposite to the platen, a stamp and an ink ribbon spool are attached, and the stamp is movably attached to the frame, and the stamp is brought close to the print head to print paper. an ink ribbon mounting plate that allows the stamp to be printed on the print head or allows inspection of the area around the print head by separating the stamp from the print head; and an ink ribbon mounting plate that allows the stamp to be moved close to the print head. a positioning means for positioning; a locking member for locking the ink ribbon mounting plate at the position positioned by the positioning means; A printer stamp attachment mechanism that includes an ink ribbon guide interposed between the print head and the ink ribbon guide. (2) The locking member is arranged in two rows (H) on the right side, one of which has a main locking function, and the other one of which has only an auxiliary locking function. (1
1-link stamp attachment mechanism described in ).