JP2020164296A - Printer device - Google Patents

Abstract

To provide a printer device corresponding to recording papers having different widths and wound in a roll shape.SOLUTION: A printer device comprises: first and second sheet holders having through holes; and a connection shaft which is inserted into the through hole of the first sheet holder and the through hole of the second sheet holder to connect the first sheet holder and the second sheet holder. Spiral grooves pointing in directions different from each other are formed, respectively, on the connection shaft, and a protrusion entering one spiral groove of the connection shaft is provided to the through hole of the first sheet holder, and a protrusion entering the other spiral groove of the connection shaft is provided to the through hole of the second sheet holder. By rotating the connection shaft, and/or by moving the first and second sheet holders in parallel with a rotary shaft direction of the connection shaft, a distance between the first sheet holder and the second sheet holder is changed.SELECTED DRAWING: Figure 14

Description

The present invention relates to a printer device.

Printers are widely used in applications such as registers in shops and mobile receipt issuing devices that can be carried around. Some printer devices are provided with a printer main body and a lid that is rotatably supported by the printer main body. By opening the lid, a roll-shaped recording paper is inserted into the recording paper holder. be able to.

JP-A-2017-13945 Japanese Unexamined Patent Publication No. 2000-302299 Jitsukaisho 60-186443 JP-A-11-139638A Japanese Unexamined Patent Publication No. 2006-036515

By the way, there are various widths of roll paper used in a printer device, and if one printer device can print on recording paper having various widths, the versatility of the printer device will be improved.

Therefore, there is a demand for a printer device that can handle recording papers having different widths.

According to one aspect of the present embodiment, the first and second seat holders having through holes, the through holes of the first seat holder, and the through holes of the second seat holder are inserted into the first and second seat holders. A connecting shaft for connecting one seat holder and the second seat holder is provided, and the connecting shaft is formed with spiral grooves in different directions, and penetrates the first seat holder. The hole is provided with a protrusion that enters one of the spiral grooves of the connecting shaft, and the through hole of the second seat holder is provided with a protrusion that enters the other spiral groove of the connecting shaft. The first seat holder and the second seat holder by rotating the connecting shaft and / or by moving the first and second seat holders in parallel with the rotation axis direction of the connecting shaft. It is characterized by changing the distance between and.

According to the present invention, it is possible to provide a printer device corresponding to recording papers having different widths.

Perspective view of the printer apparatus of the first embodiment (1) Perspective view (2) of the printer apparatus of the first embodiment Explanatory drawing (1) of the printer apparatus of 1st Embodiment Explanatory drawing (2) of the printer apparatus of 1st Embodiment Explanatory drawing (3) of the printer apparatus of 1st Embodiment Explanatory drawing (4) of the printer apparatus of 1st Embodiment Explanatory drawing (5) of the printer apparatus of 1st Embodiment Explanatory drawing (6) of the printer apparatus of 1st Embodiment Explanatory drawing (7) of the printer apparatus of 1st Embodiment Explanatory drawing (8) of the printer apparatus of 1st Embodiment Explanatory drawing (9) of the printer apparatus of 1st Embodiment Explanatory drawing (10) of the printer apparatus of 1st Embodiment Explanatory drawing (11) of the printer apparatus of 1st Embodiment Explanatory drawing (12) of the printer apparatus of 1st Embodiment Explanatory drawing (13) of the printer apparatus of 1st Embodiment Explanatory drawing (14) of the printer apparatus of 1st Embodiment Explanatory drawing (15) of the printer apparatus of 1st Embodiment Explanatory drawing (16) of the printer apparatus of 1st Embodiment Explanatory drawing (17) of the printer apparatus of 1st Embodiment Explanatory drawing (18) of the printer apparatus of 1st Embodiment Explanatory drawing (19) of the printer apparatus of 1st Embodiment Explanatory drawing (1) of modification 1 of the printer apparatus of 1st Embodiment Explanatory drawing (2) of modification 1 of the printer apparatus of 1st Embodiment Explanatory drawing of modification 2 of the printer apparatus of 1st Embodiment Explanatory drawing (1) of modification 3 of the printer apparatus of 1st Embodiment Explanatory drawing (2) of modification 3 of the printer apparatus of 1st Embodiment Explanatory drawing (1) of modification 4 of the printer apparatus of 1st Embodiment Explanatory drawing (2) of modification 4 of the printer apparatus of 1st Embodiment Explanatory drawing (1) of modification 5 of the printer apparatus of 1st Embodiment Explanatory drawing (2) of modification 5 of the printer apparatus of 1st Embodiment Explanatory drawing of modification 6 of the printer apparatus of 1st Embodiment Explanatory drawing (1) of modification 7 of the printer apparatus of 1st Embodiment Explanatory drawing (2) of modification 7 of the printer apparatus of 1st Embodiment Explanatory drawing (3) of modification 7 of the printer apparatus of 1st Embodiment Explanatory drawing (4) of modification 7 of the printer apparatus of 1st Embodiment Explanatory drawing (5) of modification 7 of the printer apparatus of 1st Embodiment Explanatory drawing (6) of modification 7 of the printer apparatus of 1st Embodiment Explanatory drawing (1) of the printer apparatus of the 2nd Embodiment Explanatory drawing (2) of the printer apparatus of the 2nd Embodiment Explanatory drawing (3) of the printer apparatus of the 2nd Embodiment Explanatory drawing of the modification of the printer apparatus of 2nd Embodiment Explanatory drawing of the printer apparatus of the 3rd Embodiment Explanatory drawing of modification 1 of the printer apparatus of 3rd Embodiment Explanatory drawing of modification 2 of the printer apparatus of 3rd Embodiment Explanatory drawing (1) of the printer apparatus of 4th Embodiment Explanatory drawing (2) of the printer apparatus of 4th Embodiment Explanatory drawing (3) of the printer apparatus of 4th Embodiment Explanatory drawing (4) of the printer apparatus of 4th Embodiment Explanatory drawing (5) of the printer apparatus of 4th Embodiment

A mode for carrying out the present invention will be described below. The same members and the like are designated by the same reference numerals and the description thereof will be omitted.

A case where roll-shaped recording papers having different widths are used in the printer device will be described. For example, in a printer device that can install a 4-inch wide roll paper in the recording paper installation area, it is not possible to print by inserting a 3-inch wide or 2-inch wide recording paper in the installation area, which is narrower than 4 inches. It's not impossible.

However, when a narrow recording paper is inserted in the installation area corresponding to the 4-inch width recording paper, the recording paper moves in the width direction within the installation area, so that the recording paper needs to be positioned. On the other hand, if the center of the recording paper in the width direction and the center of the print head deviate from each other, printing defects may occur. It is preferable to position the recording paper by

(Printer device)
The printer device of this embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is a perspective view of a state before inserting the recording paper 100 into the printer device of the present embodiment, and FIG. 2 is a perspective view of a state in which the recording paper 100 is inserted.

The printer device of this embodiment has a printer main body 10 and a lid 20 rotatably connected to the main body 10. A platen roller 40 is attached to the inside of the lid 20, and a printing head 30 such as a thermal head is attached to the inside of the main body 10. In the printer device of this embodiment, the lid 20 can be opened and the recording paper 100 can be installed on the main body 10. The recording paper 100 shown in FIG. 2 is, for example, a recording paper having a width of 114 mm and a width of 4 inches.

By installing the recording paper 100 in the printer device and closing the lid 20, the end of the recording paper 100 is sandwiched between the platen roller 40 and the printing head 30, and the platen roller 40 is moved by a motor (not shown). By rotating the printing paper 100, printing can be performed on the recording paper 100 while carrying the recording paper 100.

Sheet holders 51 and 52 are provided on the left and right sides of the main body 10, and a recording paper is sandwiched between the two sheet holders 51 and 52. Each sheet holder 51, 52 includes holders 51a and 52a that support the recording paper 100, and guides 51b and 52b that define the width direction of the recording paper 100.

FIG. 3 is a top view of the seat holders 51 and 52, and FIG. 4 is a perspective view. As shown in FIGS. 3 and 4, the two seat holders 51 and 52 are connected by a connecting shaft 53. The seat holder 51 and the seat holder 52 are connected by a connecting shaft 53 so that the guide 51b and the guide 52b are opposed to each other and are substantially parallel to each other.

When installing the wide roll-shaped recording paper 100, the space between the sheet holder 51 and the sheet holder 52 connected by the connecting shaft 53 is widened as shown in FIGS. 3 and 4, and the holder 51a and the holder are widened. A recording paper is placed on the 52a. Both ends of the recording paper 100 are guided by the guide 51b and the guide 52b.

FIG. 6 is a top view of the seat holder 51 and the seat holder in a state of being close to each other, and FIG. 7 is a perspective view. When installing the narrow recording paper 101, the sheet holder 51 and the sheet holder 52 are brought close to each other as shown in FIGS. 6 and 7, and the recording paper 101 is installed on the holder 51a and the holder 52a. Both ends of the recording paper 101 are guided by the guide 51b and the guide 52b.

In the present embodiment, as shown in FIG. 8, spiral grooves 53a and 53b are formed on the left side and the right side of the connecting shaft 53, respectively. The connecting shaft 53 is an elongated columnar shape having a diameter of about 6 mm, and the grooves 53a and 53b are formed so as to have an angle of 30 ° or more and 60 ° or less with respect to the rotation shaft 53e of the connecting shaft 53. .. The grooves 53a and 53b have a depth of about 1 mm and a width of 2 to 3 mm. Further, the diameters of the ends 53c and 53d at both ends of the connecting shaft 53 are about 4 mm.

In the present embodiment, the winding direction of the spiral of the groove 53a and the winding direction of the groove 53b are opposite to each other, but the inclinations of the grooves 53a and 53b with respect to the rotation shaft 53e are the same angle. Therefore, when the connecting shaft 53 is rotated, the seat holder 51 and the seat holder 52 move in opposite directions. When the connecting shaft 53 is rotated in one direction, the seat holder 51 and the seat holder 52 are brought closer by the same distance to narrow the width, and when the connecting shaft 53 is rotated in the other direction, the seat holder 51 and the seat holder 52 are separated by the same distance. Can be expanded. As a result, even if the width of the recording paper changes, the center position of the recording paper in the width direction remains the same.

FIG. 9 is a side view of the seat holder 52. As shown in FIG. 9, the seat holder 52 is formed with a through hole 52c into which the connecting shaft 53 is inserted. The through hole 52c is provided with a protrusion 52d that is convex toward the center of the through hole 52c. Similarly, the seat holder 51 is also formed with a through hole having protrusions.

When attaching the connecting shaft 53 to the seat holder 52, the connecting shaft 53 is inserted into the through hole 52c as shown in FIG. At this time, the protrusion 52d enters the groove 53b. When the connecting shaft 53 is rotated, the protrusion 52d moves along the groove 53b, so that the seat holder 52 also moves in the axial direction of the connecting shaft 53. Further, when the seat holder 52 is moved in the axial direction of the connecting shaft 53, the connecting shaft 53 rotates according to the movement of the protrusion 52d that has entered the groove 53b. The same applies to the relationship between the seat holder 51 and the groove 53a.

Therefore, by rotating the connecting shaft 53 in the direction of arrow A from a state where the space between the seat holder 51 and the seat holder 52 shown in FIGS. 3 and 4 is wide, the seat holder 51 and the seat holder shown in FIGS. 6 and 7 are rotated. The space between the 52 and the 52 can be narrowed. Further, by rotating the connecting shaft 53 in the direction of arrow B opposite to arrow A from the state shown in FIGS. 6 and 7, the state shown in FIGS. 3 and 4 can be obtained.

11 and 12 show a state in which the seat holder 51, the seat holder 52, and the connecting shaft 53 are installed on the main body 10. In FIGS. 11 and 12, a part of the main body 10 is transparent for convenience. The bottom plate 11 of the main body 10 is provided with a support portion 12 that supports the connecting shaft 53. The support portion 12 has an opening having a shape corresponding to the shape of the end portion 53d, and the end portion 53d is rotatably supported by the opening of the support portion 12. By rotating the connecting shaft 53 or moving the seat holder 51 or the seat holder 52 in the direction of the rotation axis of the connecting shaft 53, the space between the seat holder 51 and the seat holder 52 is widened as shown in FIG. It can be made to correspond to a recording paper, or can be made to correspond to a narrow recording paper by narrowing the space between the sheet holder 51 and the sheet holder 52 as shown in FIG.

In the example shown in FIG. 13, a protrusion 14 that is convex on the side of the seat holder 51 and the seat holder 52 is provided on the bottom plate 13. The protrusion 14 is formed continuously in parallel with the connecting shaft 53. On the other hand, the seat holder 51 and the seat holder 52 are provided with openings having a shape corresponding to the shape of the protrusion 14. A protrusion 14 is inserted into the opening of the seat holder 51 and the seat holder 52, and the seat holder 51 and the seat holder 52 can be moved in parallel with the connecting shaft 53. In the example of FIG. 13, since the seat holder 51 and the seat holder 52 are supported by the protrusions 14, the bottom plate 13 does not need to be provided with a support portion or the like for supporting the connecting shaft 53. In this case as well, the space between the seat holder 51 and the seat holder 52 can be widened and the space between the seat holder 51 and the seat holder 52 can be narrowed by rotating the connecting shaft 53 or the like, as shown in FIG.

FIG. 14 is a perspective view of the seat holder having the knob 57, and FIG. 15 is a side view. In the examples shown in FIGS. 14 to 15, a knob 57 for operating the connecting shaft 53 is provided on the outside of the seat holder 52. On the outside of the guide 52b, a holding plate 54 to which the intermediate gear 56 and the knob 57 are rotatably attached is provided. As shown in FIG. 16, the knob 57 has a knob portion 57a and a gear portion 57b which are connected by the same rotation axis and have irregularities formed on the outer circumference. The diameter of the knob portion 57a is larger than that of the gear portion 57b. 16 (a) is a top view of the knob 57, and FIG. 16 (b) is a side view.

Further, a gear 55 is attached to the end of the connecting shaft 53 shown in FIG. As shown in FIG. 15, the gear 55 and the intermediate gear 56 mesh with each other, and the intermediate gear 56 and the gear portion 57b mesh with each other. By rotating the knob portion 57a, the gear portion 57b is rotated, and the connecting shaft 53 is rotated via the intermediate gear 56 and the gear 55. Thereby, the distance between the seat holder 51 and the seat holder 52 can be changed. As shown in FIG. 18, a gear cover 58 that covers the knob 57 or the like attached to the holding plate 54 may be attached.

In FIG. 19, the seat holder 51, the seat holder 52, the connecting shaft 53, and the knob 57 are mounted inside the main body 10. Since the knob 57 is exposed with the lid 20 open, the distance between the sheet holder 51 and the sheet holder 52 can be adjusted by operating the knob 57 even after the recording paper 100 is installed. it can.

If the knob 57 is unexpectedly rotated, the seat holder 51 and the seat holder 52 may move, and the distance between the seat holder 51 and the seat holder 52 may become wider or narrower than a desired distance. In the present embodiment, in order to prevent the knob 57 from rotating, a locking member 61 is rotatably attached to the holding plate 54 about the rotation shaft 61a as shown in FIG. The locking member 61 is provided with a locking portion 61c having irregularities having a shape corresponding to the teeth of the gear portion 57b. The rotation of the knob 57 can be prevented by operating the operating portion 61b to rotate the locking member 61 around the rotating shaft 61a and inserting the unevenness of the locking portion 61c into the teeth of the gear portion 57b. In FIG. 20, a part of the knob portion 57a is transparent.

In the example shown in FIG. 21, the locking member 62 for fixing the knob portion 57a is rotatably attached to the holding plate 54 about the rotation shaft 62a. The locking member 62 is provided with a locking portion 62c having irregularities having a shape corresponding to the irregularities of the knob portion 57a, and the locking member 62 is operated by operating the operating portion 62b as in the example of FIG. The rotation of the knob 57 can be prevented by rotating the locking portion 62c and inserting the unevenness of the locking portion 62c into the unevenness of the knob portion 57a.

Next, a modification of the present embodiment will be described.

(Modification example 1)
In the first modification of the present embodiment shown in FIGS. 22 and 23, the seat holder 51 and the seat holder 52 are provided with plate portions 51e and 52e for positioning extending in parallel with the connecting shaft 53. The seat holder 51 is provided with two plate portions 51e, and the end portion 51f of each plate portion is provided with a barb 51g that is convex in the direction in which the other plate portion 51e is provided. Further, the plate portion 52e of the seat holder 52 is inserted between the two plate portions 51e. The end portion 52f of the plate portion 52e is provided with a wide portion 52g extending to the side of the plate portions 51e on both sides. FIG. 22 shows a state in which the space between the seat holder 51 and the seat holder 52 is widened, and the return 51 g and the wide portion 52 g are in contact with each other. FIG. 23 shows a state in which the space between the seat holder 51 and the seat holder 52 is narrowed, the end portion 51f is in contact with the holder 52a, and the end portion 52f is in contact with the holder 51a.

By providing the plate portions 51e and 52e, it is possible to prevent the recording paper from falling from the sheet holders 51 and 52 when the space between the sheet holder 51 and the sheet holder 52 is wide.

(Modification 2)
In the modified example shown in FIG. 24, the widths of the holder 51a and the holder 52a are widened in the rotation axis direction of the connecting shaft 53. When the seat holder 51 and the seat holder 52 are brought close to each other, the seat holder 51 and the seat holder 52 come into contact with each other as shown in FIG. 24. Also in this case, by widening the space between the sheet holder 51 and the sheet holder 52, it is possible to handle a wide recording paper. As shown in FIG. 24, when the sheet holder 51 and the sheet holder 52 are in contact with each other, it is possible to handle a narrow recording paper. In this modification, the protrusion does not reach the bottom dead center of the spiral groove of the connecting shaft even at the minimum width position where the inside of the paper guide member contacts.

(Modification 3)
In the modified examples shown in FIGS. 25 and 26, the moving width of the sheet holder can be set by the lengths of the grooves 53a and 53b of the connecting shaft 53 according to the maximum and minimum widths of the recording paper used in the printer device. It is a thing.

In the state shown in FIG. 25, the protrusion 51d of the seat holder 51 comes into contact with the outer end of the groove 53a, and the seat holder 51 cannot move further outward. The protrusion 52d of the seat holder 52 also comes into contact with the outer edge of the groove 53b, and the seat holder 52 cannot move further outward.

On the other hand, in the state shown in FIG. 26, the protrusion 51d comes into contact with the inner end of the groove 53a, and the seat holder 51 cannot move further inward. The protrusion 52d also comes into contact with the inner edge of the groove 53b, and the seat holder 52 cannot move further inward.

(Modification example 4)
In the modified examples shown in FIGS. 27 and 28, the seat holder 51 and the seat holder 52 are provided with a plurality of positioning plate portions 51h and 52h extending in parallel with the connecting shaft 53. The plate portion 51h of the seat holder 51 and the plate portion 52h of the seat holder 52 are provided alternately. When corresponding to a wide recording paper, the space between the sheet holder 51 and the sheet holder 52 is widened as shown in FIG. 27. When the space between the seat holder 51 and the seat holder 52 is narrowed, as shown in FIG. 28, the end portion 51i of the plate portion 51h and the holder 52a are brought into contact with each other, and the end portion 52i of the plate portion 52h and the holder are brought into contact with each other. Make contact with 51a.

As described above, the moving width of the seat holders 51 and 52 depends on the lengths of the grooves 53a and 53b. By changing the length of the groove formed in the connecting shaft, it is possible to provide a sheet holder suitable for the width of the recording paper expected to be used in the printer device.

(Modification 5)
In the modified examples shown in FIGS. 29 and 30, the protrusion 52 m of the seat holder 52 is provided with springiness. FIG. 29 is a cross-sectional view of the seat holder 52 in which the connecting shaft 53 is inserted, and FIG. 30 is a cross-sectional view of the seat holder 52 cut at 29A-29B with the connecting shaft 53 removed. In this modified example, a part of the wall surface of the through hole 52c is a spring portion 52j formed in a beam shape, and a protrusion 52m is provided on the outside of the spring portion 52j. The spring portion 52j is formed by forming a groove 52k on the wall surface of the through hole 52c, and the region surrounded by the groove 52k becomes the spring portion 52j. By forming the spring portion 52j, it becomes easy to insert the connecting shaft 53 into the through hole 52c even when the connecting shaft 53 in which the spiral groove is not formed at the end portion 53f is used as shown in FIGS. 25 and 26. When the connecting shaft 53 having no spiral groove formed is inserted into the through hole 52c, the end portion 53f collides with the protrusion 52d of the through hole 52c, so that the connecting shaft 53 cannot be easily inserted. However, by forming the spring portion 52j in the protrusion 52m, when the connecting shaft 53 is inserted into the through hole 52c, the protrusion 52m is pushed by the end portion 53f, the spring portion 52j is bent and deformed, and the connecting shaft 53 is inserted into the through hole 52c. It will be easier to put in. The same applies to the seat holder 51.

(Modification 6)
A plurality of protrusions may be provided in the through hole 52c. In the modified example shown in FIG. 31, a protrusion 52d is provided in the through hole 52c, and a protrusion 52n is provided inside the protrusion 52d. By providing the through holes 52c with a plurality of protrusions in this way, it is possible to prevent the seat holder 51 and the seat holder 52 from tilting with respect to the connecting shaft 53. The distance between the protrusions 52d and the protrusions 52n is configured to be the same as the pitch of the grooves.

(Modification 7)
The connecting shaft 53 shown in FIG. 33 is provided with spiral grooves 53m and 53n whose side surfaces are inclined. The connecting shaft 53 shown in FIG. 32 is formed by cutting a metal rod, and as shown in FIG. 33, by inclining the side surfaces of the grooves 53m and 53n, the connecting shaft 53 is made of a resin material using a mold. Can be formed.

34 and 35 show a cross section of a connecting shaft of a comparative example. In the connecting shaft 53 of the comparative example, the grooves 53a and 53b are formed in a rectangular shape. As shown in FIG. 34, in the cross section cut by the rotating shaft of the connecting shaft 53, the side surface 53h is formed substantially perpendicular to the bottom surface 53g. On the other hand, in the cross section of the connecting shaft 53 shown in FIG. 35 cut on a surface deviated from the rotation axis, the angle formed by the side surface 53h and the bottom surface 53g is an acute angle. Therefore, it is extremely difficult to manufacture a connecting shaft having a rectangular groove from a resin material or the like using a mold.

On the other hand, in FIGS. 33, 36 and 37, the grooves are formed so that the angle formed by the bottom surface and the side surface of the grooves 53m and 53n is an obtuse angle. The connecting shaft 53 can be easily formed by resin molding by forming grooves 53m and 53n such that the angle formed by the bottom surface 53o and the side surface 53p is an obtuse angle.

[Second Embodiment]
The second embodiment will be described. As shown in FIGS. 38 to 39, the present embodiment has a structure in which two seat holders 151 and 152 are connected by two connecting shafts 153 and 154. Each of the sheet holders 151 and 152 includes holders 151a and 152a for supporting the recording paper, and guides 151b and 152b. 38 is a perspective view of the present embodiment, and FIG. 39 is a side view.

Grooves 153a and 153b are formed on the side surface of the connecting shaft 153, and the winding direction of the groove 153a and the winding direction of the groove 153b are opposite to each other. Grooves 154a and 154b are formed on the side surface of the connecting shaft 154, and the winding direction of the groove 154a and the winding direction of the groove 154b are opposite to each other.

The winding direction of the groove 153a and the winding direction of the groove 154a are the same, and the winding direction of the groove 153b and the winding direction of the groove 154b are the same. Therefore, by rotating both the connecting shafts 153 and 154 in the same direction, the distance between the holder 151a and the holder 152a can be changed. By providing two connecting shafts 153 and 154, it is possible to suppress tilting and wobbling of the seat holders 151 and 152 with respect to the connecting shaft.

As shown in FIG. 40, the seat holder 151, the seat holder 152, the connecting shaft 153 and the connecting shaft 154 are installed in the main body 10. In FIG. 40, a part of the main body 10 is transparent. The bottom plate 111 of the main body 10 is provided with a support portion 112 that supports the connecting shaft 153 and a support portion 113 that supports the connecting shaft 154. The support portion 112 has an opening having a shape corresponding to the shape of the end portion of the connecting shaft 153, and the end portion of the connecting shaft 153 is rotatably supported by the opening. The support portion 113 has an opening having a shape corresponding to the shape of the end portion of the connecting shaft 154, and the end portion of the connecting shaft 154 is rotatably supported by this opening.

By rotating the connecting shafts 153 and 154 or moving the seat holder 151 and the seat holder 152 in the rotation axis direction of the connecting shafts 153 and 154, the space between the seat holder 151 and the seat holder 152 is widened as shown in FIG. Further, the space between the seat holder 151 and the seat holder 152 can be narrowed.

(Modification example)
In the modified example shown in FIG. 41, the winding directions of the spiral grooves formed on the connecting shaft 155 and the connecting shaft 153 are opposite to each other.

In this modification, the winding direction of the groove 153a of the connecting shaft 153 and the winding direction of the groove 155a of the connecting shaft 155 are opposite to each other, and the winding direction of the groove 153b of the connecting shaft 153 and the winding direction of the groove 155b of the connecting shaft 155. Is in the opposite direction. Therefore, by rotating the connecting shaft 153 and the connecting shaft 154 in opposite directions, the space between the holder 151a and the holder 152a can be widened or narrowed. As shown in FIG. 38, when the connecting shaft is rotated in the same direction, if the space between the holder 151a and the holder 152a is widened or narrowed, the connecting shaft may move with the rotation of the connecting shaft. In the example, since the connecting shaft 153 and the connecting shaft 154 are rotated in opposite directions, the movements cancel each other out, and it is stable to widen or narrow the space between the holder 151a and the holder 152a.

The contents other than the above are the same as those in the first embodiment.

[Third Embodiment]
Next, a third embodiment will be described. The present embodiment has a structure provided with a stopper for preventing the knob 57 from rotating.

As shown in FIG. 42, inside the lid 20, a locking portion 221 having irregularities having a shape corresponding to the irregularities provided around the knob portion 57a is provided. By closing the lid 20, the unevenness of the locking portion 221 enters the unevenness of the knob portion 57a, and the rotation of the knob 57 can be prevented. In FIG. 42, the broken line indicates a state in which the lid 20 is open.

In the modified example shown in FIG. 43, a locking portion 222 having irregularities having a shape corresponding to the teeth of the gear portion 57b is provided inside the lid 20. By closing the lid 20, the unevenness of the locking portion 222 enters into the teeth of the gear portion 57b, and the rotation of the knob 57 is prevented. In FIG. 43, the broken line indicates a state in which the lid 20 is open.

In the modified example shown in FIG. 44, the locking member 62 provided on the holding plate 54 shown in FIG. 21 is rotated in conjunction with the opening and closing of the lid 20. Inside the lid 20, a connecting portion 62d for connecting the lid 20 and the operating portion 62b is provided. By closing the lid 20, the operating portion 62b is pushed by the connecting portion 62d, the locking member 62 rotates clockwise around the rotating shaft 62a, and the unevenness of the locking portion 62c is formed on the unevenness of the knob portion 57a. Enters and prevents the knob 57 from rotating.

[Fourth Embodiment]
A fourth embodiment will be described. In this embodiment, as shown in FIGS. 45 and 46, a plurality of positioning grooves 312 and 313 are provided on the surface 311 facing the seat holders 51 and 52 inside the main body 10, and the seat holders 51 and 52 are provided. Is provided with convex protrusions 351 and 352 corresponding to the grooves 312 and 313.

The grooves 312 and 313 are located at positions corresponding to the width of the recording paper, and the positions of the sheet holders 51 and 52 can be determined by inserting the protrusions 351 and 352 of the sheet holders 51 and 52 into the grooves 312 and 313, respectively. It can correspond to the width.

The present embodiment may have a structure in which a guide plate 314 shown in FIG. 47 provided with grooves 312 and 313 is attached to a surface of the main body 10 facing the seat holders 51 and 52.

In the example shown in FIG. 48, the surface 315 provided with the grooves 312 and 313 and the support plate portions 316 extending from both ends thereof are provided, and both ends of the connecting shaft 53 are supported by the end portions of the support plate portions 316. It has a guide member 318 in which each of the support holes 317 is provided. In this case, as shown in FIG. 49, both ends of the connecting shaft 53 are rotatably supported by the support holes 317. By rotating the connecting shaft 53, the width between the seat holder 51 and the seat holder 52 can be widened or narrowed.

Although the embodiment of the present invention has been described above, the above contents do not limit the contents of the invention.

10 Main body 20 Lid 30 Print head 40 Platen roller 51, 52 Sheet holder 51a, 52a Holder 51b, 52b Guide 51c, 52c Through hole 51d, 52d Protrusion 53 Connecting shaft 53a, 53b Groove 53c, 53d End 54 Holding plate 55 Gear 56 Intermediate gear 57 Knob 57a Knob 57b Gear 61 Locking member 61b Operation 61c Locking 100 Recording paper

Claims (7)

First and second seat holders with through holes,
A connecting shaft that is inserted into the through hole of the first seat holder and the through hole of the second seat holder and connects the first seat holder and the second seat holder.
With
The connecting shaft is formed with spiral grooves that are directed in different directions.
The through hole of the first seat holder is provided with a protrusion that enters one of the spiral grooves of the connecting shaft, and the through hole of the second seat holder is provided in the other spiral groove of the connecting shaft. There is a protrusion to enter,
The first seat holder and the second seat holder by rotating the connecting shaft and / or by moving the first and second seat holders in parallel with the rotation axis direction of the connecting shaft. A printer device characterized by changing the distance between and. A first seat holder with a first through hole,
A second seat holder with a second through hole,
A connecting shaft that is inserted into the first through hole and the second through hole and connects the first seat holder and the second seat holder.
With
Two spiral grooves having different winding directions are formed on the connecting shaft.
The first through hole is provided with a protrusion that enters one spiral groove of the connecting shaft, and the second through hole is provided with a protrusion that enters the other spiral groove of the connecting shaft. Helix,
With the gear provided on the connecting shaft,
An intermediate gear that meshes with the gear and
A knob having a gear portion that meshes with the intermediate gear,
Have,
A printer device characterized in that the connecting shaft is rotated by rotation of the knob to change the distance between the first seat holder and the second seat holder. The printer device according to claim 2, wherein a locking portion for fixing the knob in a stopped rotation state is provided. One of the first or second seat holders is provided with a holding plate to which the intermediate gear and the knob are rotatably attached.
The printer device according to claim 3, wherein the locking portion is rotatably attached to the holding plate. Printer body and
A lid rotatably attached to the printer body and
Have,
The one sheet holder, the other sheet holder, and the connecting shaft are provided inside the printer main body.
The printer device according to claim 3, wherein the locking portion is provided inside the lid. The printer device according to any one of claims 1 to 5, wherein a plurality of connecting shafts are provided. The printer device according to any one of claims 1 to 6, wherein the angle formed by the bottom surface and the side surface of the spiral groove of the connecting shaft is formed to be an obtuse angle.

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