JP3427487B2 - Printer ink ribbon unit - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink ribbon unit used in a printer for printing a recorded image such as a video image as a hard copy, a so-called color photograph.

[0002]

2. Description of the Related Art Conventionally, an ink ribbon unit used in this type of printer is composed of a ribbon supply spool shaft around which an unused ink ribbon is wound, and a ribbon take-up spool shaft around which a used ink ribbon is wound up. Has been done.
The ink ribbon unit is mounted in the printer while being housed in the ink ribbon cassette, and the printing operation on the printing paper is performed. The above-described ink ribbon unit is generally sold as a single item.

[0003]

By the way, in the above-described ink ribbon unit, the ribbon supply spool shaft and the ribbon take-up spool shaft may idle and the ink ribbon may slacken to lower the commercial value as it is. For this reason, means for preventing the ribbon supply spool shaft and the ribbon take-up spool shaft from binding and idling are provided.

Some of the conventional methods for binding and preventing idling will be described with reference to the drawings. In FIG. 11, reference numeral 1 is a ribbon supply spool shaft around which an unused ink ribbon 2 is wound, and 3 is a ribbon take-up spool shaft around which a used ink ribbon is wound up. The ribbon supply spool shaft 1 and the ribbon take-up spool shaft 3 are provided at one end thereof with drive shafts 6 and 7 having flanges 4 and 5 at their bases, and the drive shafts 6 and 7 have drive shaft holes. Driving pawls 6b and 7a are formed on the inner peripheral surfaces 6a and 7a. Further, driven side shafts 8 and 9 are provided at the other ends of the ribbon supply spool shaft 1 and the ribbon take-up spool shaft 3, respectively, to form an ink ribbon unit 10.

Incidentally, the above-described ink ribbon unit 10
As an example of an ink ribbon cassette for storing the ink, it is composed of a lower half 40 and an upper half 41 as shown in FIG. The lower half 40 has a substantially boat shape,
Drive-side bearing portions 42, 42 having circular shaft holes 42a, 42a opened at one end side thereof are provided.
2, 42, the drive side shaft portion 6 of the ink ribbon unit 10
7 is rotatably supported. The driven side bearing portion 4 having U-shaped bearings 43a, 43a on the other end side of the lower half 40.
3, 43 are provided. The driven side bearing portions 43, 4
The driven-side shaft portions 8 and 9 of the ink ribbon unit 10 are supported by 3. Reference numeral 44 is an opening window corresponding to a print head (not shown).

The upper half 41 is combined with the lower half 40 having the driven side bearing portions 43, 43, and the upper half 41 is
Plate springs 45, 45 for pressing the driven shafts 8, 9 are provided at positions corresponding to the driven bearings 43, 43 of the lower half 40.

Now, the above-mentioned ink ribbon unit 10
In the case of FIG. 11, the adhesive tape 11 is adhered across the end faces of both the drive side shaft portions 6 and 7, and the ribbon supply spool shaft 1 and the ribbon take-up spool shaft 3 are bundled and idle. Is being prevented.

In the case of FIG. 13, the above-described ink ribbon unit 10 is bound with a rubber band 12 to prevent the ribbon supply spool shaft 1 and the ribbon take-up spool shaft 3 from idling.

In the case of FIG. 14, the ink ribbon unit 10
Is stored in a transparent plastic packaging bag 13 and the packaging bag 13 is folded and then fixed with an adhesive tape 13a,
Ribbon supply spool shaft 1 and ribbon winding spool shaft 3
Prevents idling as well as binding.

However, in the method of binding and idling prevention of the ink ribbon unit 10 shown in FIG. 11, the drive side shaft portions 6 and 7 of the ribbon supply spool shaft 1 and the ribbon take-up spool shaft 3 are used.
There is a problem in that it is difficult to accurately attach the adhesive tape 11 to the end face of the above, and the adhesive tape 11 is easily peeled off because the driven shaft portions 8 and 9 are free.

Further, the method of bundling and idling prevention of the ink ribbon unit 10 shown in FIG. 13 has a problem that wrinkles are generated in the ink ribbon portion bound by the rubber band 12 and the image quality of the printed image is deteriorated.

Further, the method of binding and idling the ink ribbon unit 10 shown in FIG. 14 has a problem that the packaging cost is high and the packaging is time-consuming and costly.

The present invention has been made in order to solve the above-mentioned problems, and it is possible to reliably bind the ink ribbon units and prevent idling of the ink ribbon units at a low cost, and to impair the quality of the ink ribbons. Aims to get an ink ribbon unit for no printer.

[0014]

In order to achieve the above object, an ink ribbon unit of a printer according to the present invention comprises:
It has a ribbon supply spool shaft 1 around which an unused ink ribbon is wound and a ribbon take-up spool shaft 3 around which a used ink ribbon is wound, and one end of the ribbon supply spool shaft 1 and the ribbon take-up spool shaft 3 In an ink ribbon unit of a printer having drive side shaft portions 6 and 7 each having drive shaft holes 6a and 7a, and driven side shaft portions 8 and 9 at the other end, a ribbon supply spool shaft 1 and a ribbon A frame-shaped part that binds the take-up spool shaft 3 and prevents slipping
It is composed of the binding members 30 and 32 integrally formed by the material.
Thus, the first slip prevention portion of the binding member 30 is
Are provided at both ends of and are engaged with the drive shaft holes 6a, 7a.
U-shaped engaging pieces 31, 31, which are the second of the bundling member 32.
The idling prevention portions are provided at both ends of the binding member 32 and are provided on the driven side.
Clamp pieces 33, 33 for sandwiching the shaft portions 8, 9 are provided.

[0015]

[0016]

[0017]

[0018]

Further, the ink ribbon unit in the printer according to a preferred embodiment of the present invention, the clamping pieces 33, 33
It is obtained by the grip portion 34, 34 provided in the imaging beam member 32 to be detachable from the driven-side shaft portions 8 and 9 by nipping.

[0020]

The ink ribbon unit of the printer according to the present invention having the above-described structure includes the ribbon supply spool shaft 1.
Also, the binding of the ribbon take-up spool shaft 3 and the prevention of idling are easy.
Bundling members 30, 32 integrally formed by a comb-shaped member
The first idling prevention portion of the binding member 30 is for driving
With the U-shaped engaging pieces 31, 31 engaged with the shaft holes 6a, 7a
And the second idling prevention portion of the binding member 32 is the driven side shaft portion.
Since the clamp pieces 33 and 33 for sandwiching 8 and 9 are used,
Driving shaft hole 6 of U-shaped engaging pieces 31, 31 of the bundle member 30
a and 7a, the drive side shaft portions 6 and 7 are bound and revolved.
The supply spool shaft 1 and ribbon take-up spool shaft 3 are empty
Can be stopped. In addition, the clamp piece 3 of the binding member 32
Bundling of driven side shaft portions 8 and 9 by 3, 33 and both spool shafts
It is possible to stop idling 1,3.

[0021]

[0022]

[0023]

[0024]

Further, the clamping pieces 33 and 33 forming the bundle member 3
By sandwiching the grip portions 34, 34 provided on the second side, the driven side shaft portions 8, 9 can be separated from the driven side shaft portions 8, 9.
It is possible to easily remove the clamp pieces 33, 33 from 9.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of an ink ribbon unit of a printer according to the present invention will be described below with reference to the drawings. [Embodiment 1] FIG. 1 is a perspective view of an ink ribbon unit and a slip prevention member that binds the ink ribbon unit to prevent slipping.

Reference numeral 1 is a ribbon supply spool shaft around which an unused ink ribbon 2 is wound, and 3 is a ribbon take-up spool shaft around which a used ink ribbon is wound up. The ribbon supply spool shaft 1 and the ribbon take-up spool shaft 3 are provided at one end thereof with drive shafts 6 and 7 having flanges 4 and 5 at their bases, and the drive shafts 6 and 7 have drive shaft holes. Driving pawls 6b and 7a are formed on the inner peripheral surfaces 6a and 7a. Further, the driven side shaft portion 8 is provided at the other end of the ribbon supply spool shaft 1 and the ribbon take-up spool shaft 3, respectively.
9 is provided to configure the ink ribbon unit 10. The ink ribbon unit 8 has the same structure as the ink ribbon unit described in the conventional example.

Now, the drive side shaft portions 6 and 7 of the ribbon supply spool shaft 1 and the ribbon take-up spool shaft 3 of the ink ribbon unit 10 are bound and stopped by the idling prevention member 14, and the driven side shaft portion. 8 and 9 are bound and stopped by the idling prevention member 15.

As shown in the development view of FIG. 2, the one binding / idling prevention member 14 is made of a sheet-like member such as cardboard or a plastic material, and the binding member 16 has a drive side shaft portion 6, 6.
Two shaft holes 17, 17 that are respectively press-fitted into 7 are formed, and bending pieces 18, 18 as first idling prevention portions are integrally provided at both left and right ends of this binding member 16. The folding pieces 18, 18 include a plurality of fold lines 18a, 18
a is formed.

The other binding / idling prevention member 15 is also made of a sheet-like member such as cardboard or a plastic material, and is used as a binding member 19.
Two shaft holes 20 and 20 are formed in the driven side shaft portions 8 and 9 as second slip prevention portions which are press-fitted into the driven shaft portions 8 and 9, respectively.

In the binding / idling prevention member 14 described above, first, the shaft holes 17, 17 of the binding member 16 are inserted into the drive side shaft portions 6 of the ribbon supply spool shaft 1 and the ribbon winding spool shaft 3.
7 is press-fitted into 7 and inserted until it comes into contact with the flanges 4 and 5, and then the tip ends of the bent pieces 18 and 18 are driven from the outside of the binding member 16 to the drive shaft holes 6a and 7a of the drive side shaft parts 6 and 7. Enter each inside. At this time, the bent pieces 18, 18 are engaged with the drive claws 6b, 7b of the drive shaft holes 6a, 7a.

The binding / idling prevention member 15 is inserted by pressing the shaft holes 20 and 10 of the binding member 19 into the driven side shaft portions 8 and 9, respectively.

FIG. 3 is a perspective view showing a state in which the binding and idling prevention members 14 and 15 are attached to the ink ribbon unit 10, and FIG. 4 is a sectional view of a main part thereof. That is, the ink ribbon unit 10 includes the binding member 1 at the drive shafts 6 and 7.
6 can bind the ribbon supply spool shaft 1 and the ribbon take-up spool shaft 3 and the bending pieces 18, 18 can prevent the spool shafts 1, 3 from idling. Further, in the driven side shaft portions 8 and 9, both spool shafts 1, 1
3 can be bound and the spool holes 1 and 3 can be prevented from idling by the shaft holes 17 and 17. Thus, the above-described ink ribbon unit is packaged and sold.

[Embodiment 2] FIG. 5 is a perspective view of an ink ribbon unit and an idling prevention member that binds the ink ribbon unit to prevent idling. The ink ribbon unit has the same structure as that of the first embodiment. Therefore, the same reference numerals are given and duplicate description is omitted.

In this example, the binding / idling prevention member 21 is integrally formed by a sheet-like member such as cardboard or plastic material, and is provided on both sides of the rectangular main member 22 as shown in the developed view of FIG. Bundling members 23 and 24 are provided through the fold lines 22a and 22a. Semi-circular cut lines 25, 25 are formed on one of the binding members 23 and folded up as a first idling prevention part to be engaged with the drive shaft holes 6a, 7a of the drive side shaft parts 4, 5. Pieces 26, 26 are provided.
The other bundling member 24 is formed with shaft holes 27, 27 as a second idling prevention part that is press-fitted into the driven side shaft parts 8, 9.

The above-mentioned binding / idling prevention member 21 is inserted into the driven-side shaft portions 8 and 9 by press-fitting the shaft holes 27 and 27 of the other binding member 24, respectively, and then folding up one binding member 23. With the pieces 26, 26 corresponding to the drive shaft holes 6a, 7a of the drive side shaft portions 6, 7, the folded piece 2
6 and 26 are pushed inward to drive shaft holes 6a,
It can be engaged in 7a. At this time, the folded-up pieces 26, 26 have the driving claws 6b of the driving shaft holes 6a, 7a,
7b is engaged.

FIG. 7 is a side view showing a state in which the binding and idling prevention member 21 is attached to the ink ribbon unit 10. That is, in FIG. 5, in the ink ribbon unit 10, in the drive side shaft portions 6 and 7, the binding member 23 binds the ribbon supply spool shaft 1 and the ribbon take-up spool shaft 3 together, and the folding pieces 26 and 26 both spool shafts 1 together. , 3 can be used to prevent slipping. Further, in the driven side shaft portions 8 and 9, the binding action of the spool members 1 and 3 by the binding member 24 and the shaft hole 2 are performed.
The idle stop action of both spool shafts 1 and 3 by 7 and 27 can be performed. Further, since the binding / idling prevention member 21 can protect the upper portion of the ink ribbon 2 by the main member 22,
It is possible to prevent damage to the ink ribbon 2. Further, the spool shafts 1 and 3 which are bound and idly stopped can eliminate the play in the axial direction and can be bound stably. Thus, the above-described ink ribbon unit is packaged and sold.

[Embodiment 3] FIG. 8 is a perspective view of an ink ribbon unit and an idling prevention member that binds the ink ribbon unit to prevent idling, and the ink ribbon unit has the same structure as in the first and second embodiments. Therefore, the same reference numerals are given and duplicate description will be omitted.

In this example, the binding / idling prevention member 28 is integrally formed by injection molding from a frame member made of a plastic material such as POM (polyacetal), HDPE (high density polyethylene), PP (polypropylene) having high elasticity. Is. A bundling member 30 is provided on one end side of the main frame 29, and a first idling prevention part engaged with the drive shaft holes 6a, 7a of the drive side shaft parts 6, 7 at both ends of the bundling member 30. Elastically deformable U-shaped engagement piece 3
1, 31 are formed. A bifurcated bundling member 32 is provided at the other end of the main frame 29.
Elastically deformable C-shaped clamp pieces 33, 33 that are engaged with the driven-side shaft portions 8, 9 at both ends thereof are formed. Further, the forked binding member 32 has grip portions 34, 34 that are elastically deformable in the inward and outward directions.

In the binding and idling prevention member 28 described above, the U-shaped engaging pieces 31, 31 of the one binding member 30 are press-fitted into the drive shaft holes 6a, 7a of the drive side shaft portions 6, 7, respectively. To be done. At this time, the U-shaped engaging pieces 31, 31 are engaged with the drive claws 6b, 7b of the drive shaft holes 6a, 7a. A front view of this engaged state is shown in FIG.

Further, the clamp piece 3 of the other binding member 32
3, 33 are engaged with the driven side shaft portions 8, 9 from the side surface portions.

FIG. 10 shows a state in which the binding / idling prevention member 28 is attached to the ink ribbon unit 10. That is,
In the ink ribbon unit 10, the drive side shaft portions 6 and 7 bind the ribbon supply spool shaft 1 and the ribbon take-up spool shaft 3 by the binding member 30, and the U-shaped engaging portions 31 and 31.
Due to this, the idling stop action of both spool shafts 1 and 3 can be performed. Further, in the driven side shaft portions 8 and 9, the binding member 32 can bind the spool shafts 1 and 3 and the clamp pieces 33 and 33 can stop the spool shafts 1 and 3 from idling. Further, the spool shafts 1 and 3 which are bound and idly stopped can eliminate the play in the axial direction and can be bound stably. Thus, the above-described ink ribbon unit 10 is packaged and provided for sale.

In this embodiment, when the ink ribbon unit 10 is used, in order to remove the binding and idling prevention member 28 from the ink ribbon unit 10, the drive shaft holes 6a and 7a of the drive shaft portions 6 and 7 can be removed. From the U-shaped engaging piece 31,
After pulling out 31, the grip portions 34, 34 are clamped by fingers and elastically deformed inward, so that the clamp pieces 33, 33
Can be easily removed from the driven side shaft portions 8 and 9.

The present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made without departing from the scope of the invention.

Binding of the ink ribbon unit of the printer,
The idling prevention member can be widely applied as a binding and idling prevention member for ink ribbon units of video printers and other printers.

[0046]

As described above, in the ink ribbon unit of the printer according to the present invention, the binding of the ribbon supply spool shaft and the ribbon take-up spool shaft and the prevention of idling can be prevented.
It is composed of a bundling member that is integrally molded by a bar-shaped member,
The first idling prevention portion of the binding member is engaged with the drive shaft hole.
It is a U-shaped engagement piece, and the second idling prevention part of the binding member is
Since it is a clamp piece that clamps the moving side shaft part, ribbon supply
Spool shaft and ribbon take-up spool shaft binding and idling stop
Can be performed easily and with good workability.
It is possible to prevent looseness in the axial direction of the reel shaft.

[0047]

[0048]

[0049]

[0050]

[0051] Further, since the clamping piece has allowed disengaged from the driven side shaft portion by nipping the grip portion provided in the sintering flux member, it is possible to easily remove the clamp pieces from the driven side shaft portion.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an ink ribbon unit and a binding / idling prevention member of a first embodiment.

FIG. 2 is a development view of the binding and idling prevention member of the first embodiment.

FIG. 3 is a perspective view of the first embodiment in a binding and idling prevention state.

FIG. 4 is a cross-sectional view of the drive-side shaft portion in the binding and idling prevention state according to the first embodiment.

FIG. 5 is an exploded perspective view of the ink ribbon unit and the binding and idling prevention member of the second embodiment.

FIG. 6 is a development view of the binding and idling prevention member according to the second embodiment.

FIG. 7 is a side view of the second embodiment in a binding and idling prevention state.

FIG. 8 is an exploded perspective view of the ink ribbon unit and the binding and idling prevention member of the third embodiment.

FIG. 9 is a front view of a drive-side shaft portion in a binding and idling prevention state according to a third embodiment.

FIG. 10 is a perspective view of a third embodiment in a binding and idling prevention state.

FIG. 11 is a perspective view of idling prevention means of the conventional ink ribbon unit.

FIG. 12 is a perspective view of an ink ribbon cassette of a conventional example.

FIG. 13 is a perspective view of idling prevention means of a conventional ink ribbon unit.

FIG. 14 is a perspective view of idling prevention means of a conventional ink ribbon unit.

[Explanation of symbols]

1 Ribbon supply spool shaft 2 Ink ribbon 3 Ribbon take-up spool shaft 6,7 Drive side shaft 6a, 7a drive shaft hole 6b, 7b drive claw 8, 9 Driven shaft 10 Ink ribbon unit 14, 15, 21, 28 Bundling, idling prevention member 16, 19 Bundling members 17,20 shaft hole 18 bent pieces 22 Main components 23, 24 binding members 26 folded pieces 27 shaft hole 29 Main components 30, 32 Binding member 31 U-shaped engaging piece 33 clamp pieces 34 Grip part

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Claims (2)

(57) [Claims] 1. A ribbon supply spool shaft around which an unused ink ribbon is wound, and a ribbon take-up spool shaft around which a used ink ribbon is wound. The ribbon supply spool shaft and the ribbon take-up spool shaft are provided. In an ink ribbon unit of a printer having a driving side shaft portion having a driving shaft hole at one end and a driven side shaft portion at the other end, respectively, the ribbon supply spool shaft and the ribbon take-up spool shaft are bound together. Idling prevention is integrally molded by a frame-shaped member
And a first idling prevention member for the binding member.
Stops are provided at both ends of the bundling member for driving.
A U-shaped engaging piece that is engaged with the shaft hole,
The second idling prevention section is provided at both ends of the other binding member.
An ink ribbon unit for a printer, which is a clamp piece that holds the driven side shaft portion . Wherein the ink ribbon unit of the clamp strip according to claim 1, wherein it is disengageable from the driven side shaft portion by nipping the grip portion provided in the upper Kiyui flux member printer.