JP2000351494A - Machine-glazed paper holding device and printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a machine-glazed paper holding device capable of accurately positioning a machine-glazed paper holder and capable of coping with machine-glazed paper having the wider width. SOLUTION: In a machine-glazed paper holding device, a protrusion 11 of a machine-glazed paper holder 1 is selectively engaged to a plurality of holes of a stage, and the fixing position of the machine-glazed paper holder 1 can be changed. The protrusion 11 is constituted of a root protrusion part 11a and the tip protrusion part 11b, and the outer size in the machine-glazed paper width direction in the root protrusion part 11a is smaller than the outer size La1 in the machine-glazed paper width direction X on the root protrusion part 11a, and the hole of the stage is a root fitting hole having such a shape as to be fitted to the root protrusion part 11a or a tip fitting hole having such a shape as to be fitted to the tip protrusion part 11b. The protrusion 11 is engaged with the hole selected according to the sheet width of machine-glazed paper M, the roll sheet holder 1 is fixed, and therefore, the machine-glazed paper holder can be precisely positioned, and the machine-glazed paper holder can cope with the machine-glazed paper having the wider width.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll paper holding device and a printing device for holding roll paper by a roll paper holder.

[0002]

2. Description of the Related Art A roll paper holding device used in a printer or the like is capable of supporting not only a roll paper having a single paper width but also a roll paper having a plurality of paper widths by a fixing structure of a roll paper holder. There is. For example, a positioning projection is provided on the roll paper holder, and a plurality of holes for engaging the projection are provided on the stage. Of these holes, the projection of the roll paper holder is provided in a hole selected according to the width of the roll paper. And fix the roll paper holder. Thereby, the fixing position of the roll paper holder can be changed stepwise, and roll paper of various paper widths can be transported along a predetermined transport path.

[0003] In particular, in the case of small printers and the like, not only users who purchase finished printers, but also users who purchase roll paper holding devices, print heads, and the like and incorporate them into their own frames to complete the printer. For this reason, there is a demand for a roll paper holding device that can handle a larger paper width in accordance with the needs of each user.

[0004]

The roll paper has a paper width of 5 mm.
There are various paper widths such as 8, 60, 76, 80, and 82.5 mm, and a hole is provided on the stage at a position corresponding to each paper width. Of these holes, for example, a paper width of 58 m
When a hole corresponding to m and a hole corresponding to a paper width of 60 mm are provided on the same stage, the difference in paper width is as small as 2 mm.
The two holes overlap each other to form one large hole. In this way, even if the protrusion of the roll paper holder is engaged with the large hole formed by overlapping the holes, the roll paper holder cannot be positioned with respect to the stage, and the roll paper transport path can be accurately adjusted. Not specified. If the positioning is not accurate, the roll paper may meander, causing problems such as lowering the accuracy of the printing position. Due to these circumstances, the paper width is actually 58 mm and the paper width is 60 m.
No roll paper holding device corresponding to both m and m has been realized.

SUMMARY OF THE INVENTION An object of the present invention is to provide a roll paper holding device and a printing device which can accurately position a roll paper holder even when adjacent holes overlap with each other, and which can handle roll paper having a wider width. is there.

[0006]

According to the present invention, a projection formed on a lower surface of a roll paper holder is selectively engaged with a plurality of holes formed on an upper surface of a stage to reduce the width of the roll paper. A roll paper holding device capable of changing a fixing position of a roll paper holder in accordance with the configuration, wherein the projection of the roll paper holder is composed of a root projection and a tip projection, and the hole of the stage is only a root projection. A roll paper holding device characterized in that the roll paper holding device is one of a root fitting hole having a shape fitting into the front end and a tip fitting hole having a shape fitting into the front end projection.

According to the present invention, the roll paper holder is fixed by engaging the projection of the roll paper holder with the hole of the stage selected according to the paper width of the roll paper. Paper can be held, and meandering of roll paper can be prevented.

The stage is provided with two types of holes, a root fitting hole and a tip fitting hole, and the roll paper holder is provided with two-stage projections of a root projection and a tip projection. A single projection can be positioned for any of the holes. Therefore, the shape of the hole is selected according to the shape of the stage and the distance between adjacent holes, such as providing a base fitting hole in a wide place and providing a tip fitting hole in a narrow place, and increasing the number of holes. Can be provided, and it is possible to cope with roll paper having a larger width.

Further, the present invention is characterized in that the hole of the stage is one of a root fitting hole and a tip fitting hole selected according to a distance between adjacent holes.

According to the present invention, whether the hole of the stage is the base fitting hole or the tip fitting hole depends on the distance between the hole and the adjacent hole. For example, in the case of a hole having a small distance from an adjacent hole, a large number of holes can be arranged in a certain area by selecting a tip fitting hole.
On the other hand, in the case of a hole having a sufficiently large distance from the adjacent hole, the hole can be easily processed by selecting the root fitting hole. Thus, by selecting the shape of the holes according to the distance between the holes, as many holes as possible can be arranged and the workability can be improved.

In the present invention, the root projection is preferably a column, and the root fitting hole is formed with a root fitting portion having a shape fitted only to the root projection, and an extension having a shape obtained by extending the root fitting portion. And characterized in that:

According to the present invention, the root fitting hole is
It is composed of a root fitting portion having a shape fitted to the columnar root projection and an extending portion having a shape obtained by extending the root fitting portion as it is. That is, by forming the entire root fitting hole into which the entire protrusion engages as a columnar hole, the hole can be easily processed and the processing accuracy is improved. In particular, when the stage is formed of a thin metal plate or the like, the roll paper holder can be attached only by providing the through holes, and processing of the metal plate or the like becomes easy.

According to the present invention, a projection formed on the lower surface of the roll paper holder is selectively engaged with a plurality of holes formed on the upper surface of the stage, so that the roll paper holder can be adjusted according to the width of the roll paper. The fixing device is capable of changing the fixing position of the roll paper, and prints on the roll paper supplied from the roll paper holder, wherein the projection of the roll paper holder is constituted by a root projection and a tip projection, and The printing apparatus is characterized in that the hole is one of a root fitting hole shaped to fit only the root projection and a tip fitting hole shaped to fit to the tip projection.

According to the present invention, as described above, the roll paper can be held in accordance with the width of the roll paper, and the meandering of the roll paper can be prevented, so that the printing accuracy can be improved. Printing on roll paper of many paper widths is possible.

[0015]

FIG. 1A is a front view showing a roll paper holder 1 according to a first embodiment of the present invention.
1 (b) is a cross-sectional view, FIG. 1 (c) is a plan view seen from below, and FIG. 1 (d) is an enlarged side view showing positioning projections 11 and 12. Yes, FIG. 1 (e)
Is a perspective view of the protrusion 11.

The roll paper holder 1 includes a plate-like support 13,
And a flange 14. On the front surface 13a of the support 13, a columnar projection 15 for supporting the roll paper M is provided. The pair of roll paper holders 1 are located on front surfaces 13 of each other.
a are disposed so as to face each other, and a pair of projections 15
To support the roll paper M. The shaft member of the roll paper M has a cylindrical shape, and is engaged with and fixed to the projection 15. The lower half of the projection 15 has a slope inclined with respect to the front surface 13a, and has a structure in which the shaft member of the roll paper is easily engaged.

The flange 14 extends from the lower end of the column 13 toward the rear surface 13b, and is substantially perpendicular to the column 13. An elongated hole 16 for screwing is provided at the center of the flange 14,
By screwing the flange 14 horizontally, the column 13 can be held vertically and the roll paper M can be supported horizontally.

On the lower surface 14a of the flange 14, projections 11 and 12 for positioning are provided. The positioning projection 11 includes a root part 11a and a tip part 11b. The root portion 11a has a shape extending downward in a columnar shape. The outer diameter of the root 11a is, for example, about 2 mm, and the outer dimension La1 of the root 11a in the roll paper width direction X.
Is equal to the outer diameter of the root portion 11a. The distal end portion 11b extends downward from the root portion 11a, and is sandwiched between two slopes, and the width decreases toward the distal end. Protrusion 12
Are also used for positioning, have the same configuration as the projections 11, and are arranged in the roll paper transport direction Z with respect to the projections 11.

FIG. 2A is a plan view showing a stage 20 for fixing the roll paper holder 1 of FIG.
(B) is a front view thereof. The stage 20 is a base on which the roll paper holder 1 is fixed.
The roll paper holder 1 constitutes the roll paper holding device of the present invention. Further, the stage 20 is provided with a head unit 30 for printing, a driving roller and a driven roller for transporting roll paper, and the like, and the printing apparatus of the present invention is configured.

At the upper end of the stage 20 in the direction X, holes 21 and 22 for positioning one of the pair of roll paper holders 1 and a screw hole 23 for fixing are provided. The holes 21 and 22 are in the roll paper holder 1
The roll paper holder 1 is positioned by engaging with the positioning projections 11 and 12, respectively. The screw that has passed through the elongated hole 16 is fitted into the screw hole 23, and fixes the roll paper holder 1 to the stage 20.

On the other hand, a plurality of fixing positions of the other roll paper holder 1 exist. That is, stage 20
On the upper surface of the hole 41, a hole 41 is provided at a position away from the hole 21 by a predetermined distance in the direction X.
To 47 are sequentially arranged in the direction X. Similarly, the hole 31 is located at the same distance from the hole 22 in the direction X.
Are provided, and the holes 32 to 37 are sequentially arranged in the direction X following the hole 31.
Are arranged in a row. The positioning projections 11 and 12 of the roll paper holder 1 are holes 31 and 41, holes 32 and 42, holes 33 and 43, holes 34 and 44, holes 35 and 45, and holes 36 and 4.
6 or holes 37, 47.

The screws passing through the elongated holes 16 are screw holes 51 to 5
5 to fix the roll paper holder 1 to the stage 20. Of these, the screw hole 51 is formed when the protrusions 11 and 12 are engaged with the holes 31 and 41 and when the protrusions 11 and 12 are
The screw hole 54 is also used when engaging with
The case where the protrusions 11 and 12 engage with the holes 35 and 45 and the case where the protrusions 11 and 12 engage with the holes 36 and 46 are shared.

As described above, one roll paper holder 1 is fixed to a single fixed position on the stage 20 and the other roll paper holder 1 is fixed to any of a plurality of fixed positions on the stage 20. The distance between the roll paper holders 1 can be changed stepwise, and the roll paper M having a plurality of paper widths can be supported in accordance with the distance. The roll paper M is supported so that its width direction coincides with the direction X, and is transported along the direction Z.

Roll paper holder 1 and stage 20
Are made of synthetic resin, and facilitate processing of projections and holes. The stage 20 may be made of a thin metal plate.

FIG. 3A is a sectional view showing the holes 31 to 37 in FIG. 2 in detail, and FIG. 3B is a partially enlarged view thereof. The holes 31 to 37 have, for example, a paper width of 58 mm and 60 m.
m, 76 mm, 80 mm, 82.5 mm, and 112 mm roll paper, respectively.
2, the pitch between the holes 35 and 36 is as small as 2.5 mm.

As shown in FIG. 3A, the holes 33, 34,
Reference numeral 37 denotes a root fitting hole of the present invention, which has a sufficient space with other holes and has a circular cross-section. That is, the holes 33, 34, and 37 are formed of a base fitting portion having a shape fitted to the base of the protrusion and an extension having a shape obtained by extending the base fitting portion into a column shape. , 37 can be easily formed. Each of the through holes has an inner diameter of about 2 mm, and can engage with the base of the projection to position the roll paper holder 1. In addition, hole 2
1 and 22 have the same configuration.

As shown in FIG. 3B, the hole 31 includes a root fitting part 31a and a tip fitting part 31b. The root fitting portion 31a has a shape fitting with the root portion 11a of the protrusion 11, and has a circular cross section. The distal end fitting portion 31b has a shape that fits into the distal end portion 11b of the projection 11. The hole 32 also has a base fitting part 32a similar to the base fitting part 31a,
And a tip fitting portion 32b similar to the tip fitting portion 31b.

For this reason, even if the root fitting part 31a and the root fitting part 32a overlap, the tip fitting part 31b and the tip fitting part 32b are separated, so that the tip fitting parts 31b and 31b are separated.
The roll paper holder 1 can be reliably positioned by the slope 32b abutting on the tip of the projection. Moreover, the cross sections of the root fitting portions 31a and 32a are circular,
Since the width of the overlapped portion in the roll paper transport direction Z is narrower than its end, even if the root fitting portions 31a and 32a overlap each other, the fitted projections are unlikely to be shifted in the roll paper width direction X.

The holes 35 and 36 also correspond to the holes 31 and 3.
2, the projections can be reliably fixed and the roll paper holder 1 can be positioned even if they overlap each other. The holes 31, 32, 35, and 36 constitute the distal end fitting portion of the present invention. Further, for the holes 41 to 47,
It has the same configuration as the holes 31 to 37, and can cope with both the paper width of 58 mm and the paper width of 60 mm, which were not possible in the past.

FIG. 4A is a front view showing a roll paper holder 2 according to a second embodiment of the present invention, FIG. 4B is a cross-sectional view thereof, and FIG. It is the top view seen from the lower part. The roll paper holder 2 has substantially the same configuration as the roll paper holder 1 of the first embodiment, but differs in the shape of the positioning projections 11 and 12. The roots of the projections 11 and 12 have a columnar shape with an outer diameter of about 2 mm,
It has a cylindrical shape with a smaller outer diameter than the root.

Although the stage 20 is not shown, the shape of the holes 21, 22, 31 to 37, 41 to 47 is adapted to the shape of the projection. Specifically, the hole that does not overlap with the other hole is a through hole, and the root fitting portion has a shape fitting with the root portion of the projection, that is, the cross section has a circular shape with a diameter of about 2 mm, and is extended. The portion has a shape in which the root fitting portion extends linearly downward. Thereby, the holes can be easily formed.

On the other hand, for a hole overlapping with another hole,
The root fitting portion has a shape fitting to the root portion of the projection, that is, a cross section has a circular shape with a diameter of about 2 mm, and the tip fitting portion has a shape fitting to the tip portion of the projection, that is, the cross section is larger than the root portion. Also form a small circle. Therefore, even if the root fitting portions overlap each other, the leading end fitting portions are separated from each other, so that the leading end fitting portions abut against the leading end portions, whereby the roll paper holder 2 can be reliably positioned. . Moreover, since the cross section of the root fitting portion is circular and the width of the overlapped portion in the roll paper transport direction Z is narrower than its end portion, even if the root fitting portions overlap each other, the engaged projections Has the advantage that it is unlikely to shift in the roll paper width direction X.

FIG. 5A is a front view showing a roll paper holder 3 according to a third embodiment of the present invention, FIG. 5B is a sectional view thereof, and FIG. It is the top view seen from the lower part. The roll paper holder 3 has substantially the same configuration as the roll paper holder 1 of the first embodiment, but includes protrusions 11 and 12.
Are different. The roots of the protrusions 11 and 12 have a rectangular cross section that extends long in the roll paper transport direction Z. Protrusion 1
The leading ends of the rolls 1 and 12 have a shape in which the width in the roll paper transport direction X is narrower than the root, and the width is narrowed toward the leading end by two slopes.

Although the stage 20 is not shown, the shapes of the holes 21, 22, 31 to 37, 41 to 47 correspond to the protrusions 1.
The shape is adapted to the shapes 1 and 12. Specifically, a hole that does not overlap with another hole is a through hole, and the shape of the base fitting portion fitting into the base of the protrusions 11 and 12, that is, the cross section is long in the roll paper transport direction Z. The extension portion has a rectangular shape, and the extension portion has a shape in which the base fitting portion extends linearly downward. Further, a circular shape in which the protrusions 11 and 12 are inscribed may be used. Thereby, the holes can be easily formed.

On the other hand, for a hole overlapping with another hole,
The root fitting portion has a shape fitting the root portions of the protrusions 11 and 12, that is, a rectangular shape extending long in the roll paper transport direction Z, and the tip fitting portion fits with the tip portions of the projections 11 and 12. In other words, the shape is such that the width becomes narrower toward the tip due to the two slopes. Thus, even if the root fitting portions overlap each other, the leading end fitting portions are separated from each other, so that the leading end fitting portions abut against the leading end portions, whereby the roll paper holder 3 can be reliably positioned. it can.

FIG. 6A is a front view showing a roll paper holder 4 according to a fourth embodiment of the present invention, and FIG. 6B is a plan view seen from below. The roll paper holder 4 is
Although the configuration is substantially the same as the roll paper holder 1 of the embodiment, the shapes of the projections 11 and 12 are different. The roots of the protrusions 11 and 12 have a cross-shaped cross section extending in the roll paper width direction X and the roll paper transport direction Z. The tips of the protrusions 11 and 12 have a shape in which the cross section becomes narrower as going from the root to the tip.

Although the stage 20 is not shown, the shapes of the holes 21, 22, 31 to 37, 41 to 47 correspond to the protrusions 1.
The shape is adapted to the shapes 1 and 12. Specifically, a hole that does not overlap with another hole is a through hole, and the shape of the base fitting portion fitting into the base of the protrusions 11 and 12, that is, the cross section is in the roll paper width direction X and the roll paper It has a cross shape extending in the transport direction Z, and the extension portion has a shape in which the base fitting portion extends linearly downward. Also, projections 11 and 12
May be in a circular shape. Thereby, the holes can be easily formed.

On the other hand, for a hole overlapping with another hole,
The root fitting portion has a shape that fits into the root portions of the protrusions 11 and 12, that is, a cross shape extending in the roll paper width direction X and the roll paper transport direction Z, and the tip fitting portion has the protrusions 11 and 1.
2 has a shape that fits into the distal end, that is, a shape in which the cross-section becomes narrower from the root to the distal end. Therefore, even if the root fitting portions overlap each other, the tip fitting portions extending in the roll paper transport direction Z are separated from each other, and the tip fitting portions abut on the leading end portions to securely position the roll paper holder 4. be able to.

FIG. 7A is an enlarged sectional view showing a roll paper holder 5 according to a fifth embodiment of the present invention.
(B) is a plan view seen from below. The roll paper holder 5 has substantially the same configuration as the roll paper holder 1 of the first embodiment, but the shapes of the projections 11 and 12 are different. The root of the projection 11 has a columnar shape with an outer diameter of about 2 mm, and the tip has a conical shape with a smaller outer diameter from the root. The protrusion 12 has the same shape as the protrusion 11.

Although the stage 20 is not shown, the shapes of the holes 21, 22, 31 to 37, 41 to 47 correspond to the projections 1.
The shape is adapted to the shapes 1 and 12. Specifically, the hole that does not overlap with the other holes is a through hole, and the root fitting portion has a shape fitting with the root portions of the protrusions 11 and 12, that is, a circular section having a diameter of about 2 mm. The extension portion has a shape in which the base fitting portion is linearly extended downward. Thereby, the holes can be easily formed.

On the other hand, for a hole overlapping with another hole,
A shape in which the root fitting portion fits into the root portions of the protrusions 11 and 12, that is, a circular cross section having a diameter of about 2 mm; That is, it has a conical shape. Therefore, even when the root fitting portions overlap each other, the tip fitting portions are separated from each other, the tip fitting portions abut on the tip portions, and the roll paper holder 2 can be reliably positioned. Moreover, the cross section of the root fitting portion is circular, and the width of the overlapping portion in the roll paper transport direction Z is narrower than its end portion. 11 and 12 are in the roll paper width direction X
Hard to slip.

[0042]

As described above, according to the present invention, the roll paper holder can be accurately positioned, and can accommodate roll paper having a wider paper width. Further, the hole can be easily processed, and the processing accuracy can be improved. Further, in the printing apparatus, printing accuracy can be improved, and printing on a large number of roll papers can be performed.

[Brief description of the drawings]

FIG. 1A is a front view showing a roll paper holder 1 according to a first embodiment of the present invention, FIG. 1B is a cross-sectional view thereof, and FIG. FIG. 1D is a plan view seen from below, and FIG. 1D is a side view showing positioning protrusions 11 and 12 in an enlarged manner.

FIG. 2A is a plan view showing a stage 20 for fixing the roll paper holder 1 of FIG. 1, and FIG.
(B) is a front view thereof.

FIG. 3A is a sectional view showing holes 31 to 37 in FIG. 2 in detail, and FIG. 3B is a partially enlarged view thereof.

4A is a front view illustrating a roll paper holder 2 according to a second embodiment of the present invention, FIG. 4B is a cross-sectional view thereof, and FIG. It is the top view seen from the lower part.

FIG. 5A is a front view showing a roll paper holder 3 according to a third embodiment of the present invention, FIG. 5B is a cross-sectional view thereof, and FIG. It is the top view seen from the lower part.

FIG. 6A is a front view showing a roll paper holder 4 according to a fourth embodiment of the present invention, and FIG. 6B is a plan view seen from below.

FIG. 7A is an enlarged sectional view showing a roll paper holder 5 according to a fifth embodiment of the present invention, and FIG.
Is a plan view seen from below.

DESCRIPTION OF SYMBOLS 1-5 Roll paper holder 11, 12 Projection 11a Root 11b Tip 13 Support 14 Flange 16 Slot 20 Stage 21, 22, 31, 31-37, 41-47 Hole 23, 51-55 Screw hole 31a , 32a Root fitting portion 31b, 32b Tip fitting portion La1

Claims (4)

[Claims] 1. A fixing position of a roll paper holder according to a width of a roll paper by selectively engaging a projection formed on a lower surface of the roll paper holder with a plurality of holes formed on an upper surface of a stage. A projection of the roll paper holder, the projection of the roll paper holder is formed of a root projection and a tip projection, the hole of the stage, the bottom fitting of a shape that fits only the root projection. A roll paper holding device, wherein the roll paper holding device is one of a mating hole and a tip fitting hole having a shape fitted to the tip projection. 2. The roll paper holding device according to claim 1, wherein the hole of the stage is one of a root fitting hole and a tip fitting hole selected according to a distance between adjacent holes. apparatus. 3. The base projection has a columnar shape, and the base fitting hole includes a base fitting part having a shape fitting only to the base projection and an extending part having a shape obtained by extending the base fitting part. The roll paper holding device according to claim 1, wherein 4. A fixing position of the roll paper holder according to a width of the roll paper by selectively engaging a projection formed on a lower surface of the roll paper holder with a plurality of holes formed on an upper surface of the stage. Is a printing device that prints on roll paper supplied from a roll paper holder, wherein the projections of the roll paper holder are configured with a root projection and a tip projection, and the hole of the stage is A printing apparatus characterized in that the printing apparatus is one of a root fitting hole having a shape fitting only to the root projection and a tip fitting hole having a shape fitting to the tip projection.