JP4595092B2 - Ink ribbon spool - Google Patents

Description

  The present invention is capable of fitting a protrusion formed on one of the flanges provided on each of the supply side spool and the take-up side spool with a hole or a recess formed on the other flange. In detail, the ink ribbon spool relates to an ink ribbon spool which is intended to securely fit the protrusion and the hole or the recess at two adjacent positions.

As shown in FIG. 4, the conventional ink ribbon spool has a plurality of protrusions 4 at predetermined intervals on the same circle on the outer surface 3a of the flange 3 provided on both sides of the supply-side spool 2 for supplying the ink ribbon 1. A plurality of holes 7 are formed at predetermined intervals on the same circle, penetrating from the outer surface 6a of the flange 6 provided on both sides of the take-up spool 5 for winding the ink ribbon 1 to the inner surface 6b. Then, the hole 7 of the flange 6 of the take-up spool 5 is fitted into the protrusion 4 of the flange 3 of the supply-side spool 2 to assemble both spools together to prevent loose winding of the ink ribbon 1 and handle it. (For example, refer to Patent Document 1).
JP 2002-234224 A

  However, in such a conventional ink ribbon spool, as shown in FIG. 5, two adjacent projections 4 among the plurality of projections 4 provided on the flange 3 of the supply side spool 2, and the take-up side spool 5. When two spools 7 adjacent to each other among the plurality of holes 7 provided in the flange 6 are fitted to each other and the spools are assembled, the fitting state is stable and the supply side spool 2 and the winding are wound. Although the side spool 5 is not separated, it is necessary to confirm that the positions of the two adjacent protrusions 4 and the two adjacent holes 7 are aligned with each other. It was not possible to make it fit securely.

  For example, in the flanges 3 and 6 on both sides, as shown in FIG. 6, when the protrusion 4 and the hole 7 are fitted together at one location on both sides of the flange, or on one flange side, it is fitted at two locations. However, when the other flange side is fitted at one place, the fitting state becomes unstable and the supply side spool 2 and the take-up side spool 5 are easily separated. In such a state, when the ink ribbon 1 is replaced, the protrusion 4 is removed from the hole 7 and, for example, the supply-side spool 2 is dropped, so that a large amount of unwinding of the ink ribbon 1 may occur. Further, the protrusion 4 is detached from the hole 7 due to vibration during conveyance and the spools are separated from each other, and the take-up spool 5 rotates in the opposite direction to the normal take-up direction, and the ink ribbon 1 is taken up in the opposite direction. There was a case. In these cases, the ink ribbon that has been unwound or wound in the opposite direction has to be rewound, and its handling convenience has not been sufficiently improved.

  Therefore, the present invention addresses such a problem and tries to securely fit the protrusions and holes or recesses formed on the flanges of the supply side spool and the take-up side spool at two adjacent positions. An object is to provide an ink ribbon spool.

  In order to achieve the above object, the ink ribbon spool according to the first invention is a supply in which a plurality of protrusions are formed on the same circle at predetermined intervals on the side surfaces of the flanges provided on both sides, and the ink ribbon is wound. A winding spool that winds up an ink ribbon by forming a plurality of holes or recesses that fit with projections of the supply spool at predetermined intervals on the same circle on the side surfaces of the side spool and flanges provided on both sides. An ink ribbon spool comprising: a supply-side spool and a take-up-side spool, wherein the supply-side spool contacts a side surface of a flange of one of the spools and an outer peripheral edge of the flange of the other spool. Guide protrusions for guiding the two adjacent protrusions and the two adjacent holes or recesses of the take-up spool so as to be fitted to each other.

  With such a configuration, one of the flanges provided on both sides of the supply-side spool for winding the ink ribbon and the winding-side spool for winding the ink ribbon is formed on the side surface of the flange of one of the spools. Two adjacent projections among a plurality of projections formed on the same circle on the side surface of the flange of the supply side spool at a predetermined interval by contacting the outer peripheral edge of the flange of the other spool with the guide projection. It guide | induces so that two adjacent holes or recessed parts among several holes or recessed parts formed in the same circle at the predetermined | prescribed space | interval on the side surface of the flange of a taking side spool may mutually fit.

  An ink ribbon spool according to a second aspect of the present invention includes a supply-side spool in which a plurality of holes or recesses are formed at predetermined intervals on the same circle on the side surfaces of flanges provided on both sides, and both sides are wound An ink ribbon comprising: a winding spool on which a plurality of protrusions that fit into holes or recesses of the supply spool are formed at predetermined intervals on the same circle on the side surface of the flange provided on the winding, and winds up the ink ribbon Two spools that are adjacent to the outer peripheral edge of the flange of the other spool on the side surface of the flange of one of the supply side spool and the take-up side spool Alternatively, a guide protrusion that guides the recess and the two adjacent protrusions of the winding-side spool to fit with each other is formed.

  With such a configuration, one of the flanges provided on both sides of the supply-side spool for winding the ink ribbon and the winding-side spool for winding the ink ribbon is formed on the side surface of the flange of one of the spools. Two adjacent holes among the plurality of holes or recesses formed on the same circle on the side surface of the flange of the supply side spool at a predetermined interval by contacting the outer peripheral edge of the flange of the other spool with the guide protrusion. The concave portion and two adjacent projections among a plurality of projections formed at a predetermined interval on the same circle on the side surface of the flange of the winding side spool are guided so as to be fitted to each other.

  According to the first aspect of the present invention, two adjacent ones of the plurality of protrusions formed on the flange of the supply-side spool on the side surface of the flange of one of the supply-side spool and the take-up-side spool. The flange of the other spool is formed by forming a guide protrusion that guides the protrusion and two adjacent holes or recesses of the plurality of holes or recesses formed in the flange of the winding spool. If the outer peripheral edge of the lens is rotated while contacting the guide protrusion, the positions of the protrusion and the hole or the recess are matched by being guided by the guide protrusion, and the two are securely fitted at two adjacent positions. Can do. Therefore, the fitting state is stable, and the handling convenience of both spools can be improved compared to the conventional case.

  According to the invention of claim 2, of the plurality of holes or recesses formed in the flange of the supply side spool on the side surface of the flange of one of the supply side spool and the winding side spool. By forming a guide projection that guides the two adjacent holes or recesses and the two adjacent projections of the plurality of projections formed on the flange of the take-up spool to fit, the other spool If the outer peripheral edge of the flange contacts with the guide protrusion and is rotated, the position of the protrusion and the hole or the recess is matched by being guided by the guide protrusion. Can be fitted. Therefore, the fitting state is stable, and the handling convenience of both spools can be improved compared to the conventional case.

  According to the invention of claim 3, since the guide protrusion is formed on the outer surface of the flange of the supply-side spool, both the spools are arranged so that the flange of the supply-side spool is inside the flange of the take-up spool. Thus, there is no possibility of damaging the edge of the ink ribbon wound around the supply side spool at the outer peripheral edge of the flange of the winding side spool.

  According to the invention of claim 4, the plurality of holes or recesses are formed to extend in the circumferential direction with a predetermined length, thereby absorbing variations in processing accuracy, and the protrusions, holes or recesses, Can be easily fitted, and the assembling work of the supply side spool and the take-up side spool can be easily performed.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 is a perspective view showing an embodiment of an ink ribbon spool according to the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a cross-sectional view taken along line AA of FIG. This ink ribbon spool is used for a sublimation type or melting type printer, and includes a supply side spool 2 and a take-up side spool 5.

  As shown in FIG. 3, the supply-side spool 2 is for winding an ink ribbon 1 (described later) around a shaft 8, and is provided with disc-like flanges 3 projecting outward on both sides of the shaft 8. For example, resin is injection-molded.

  As shown in FIGS. 1 and 2, on the outer surface 3a of the flange 3 of the supply side spool 2, twelve protrusions 4 are formed on the same circle, for example, at intervals of 30 degrees. The protrusion 4 is for fitting with a hole 7 formed in a flange 6 of a take-up spool 5 to be described later to assemble the supply-side spool 2 and the take-up spool 5 integrally. Is formed.

  A guide protrusion 9 is provided on the outer surface 3 a of the flange 3 of the supply side spool 2. The guide projection 9 rotates by contacting an outer peripheral edge 6c of the flange 6 of the take-up spool 5, which will be described later, thereby rotating the guide projection 9 adjacent to the adjacent two of the plurality of projections 4 formed on the flange 3 of the supply-side spool 2. The two protrusions 4 are guided so that two adjacent holes 7 out of the plurality of holes 7 formed in the flange 6 of the take-up spool 5 are engaged with each other, as shown in FIG. Between the two protrusions 4, the protrusions 4 are arranged at intervals of 2 pitches, for example, at an interval of 60 degrees, and extend in the radial direction at a height similar to the thickness of the flange 6 of the take-up spool 5. Yes. The guide protrusion 9 is not limited to the one that is long in the radial direction of the flange 3, and may be provided only in the vicinity of the outer peripheral edge of the flange 3.

  As shown in FIG. 3, the take-up spool 5 is for winding the ink ribbon 1 supplied from the supply-side spool 2 around a shaft 10, and is a circle projecting outward on both sides of the shaft 10. A plate-like flange 6 is provided, and for example, a resin is injection-molded.

  As shown in FIG. 1, the flange 6 of the winding spool 5 has eight holes 7 formed on the same circle at intervals of 45 degrees, for example, penetrating from the outer surface 6a to the inner surface 6b. . The holes 7 are fitted at two locations adjacent to the protrusions 4 formed on the outer surface 3a of the flange 6 of the supply side spool 2, and are formed to extend in the circumferential direction with a predetermined length. Variations in processing accuracy are absorbed to facilitate fitting with the protrusions 4.

  In this case, as shown in FIG. 3, the interval L1 between the flanges 6 of the take-up spool 5 is made longer than the interval L2 between the flanges 3 of the supply-side spool 2, and when both spools are assembled, the supply-side spool 2 The flange 3 fits inside the flange 6 of the take-up spool 5. Thereby, there is no possibility of damaging the edge of the ink ribbon 1 wound around the supply side spool 2 at the outer peripheral edge 6c of the flange 6 of the winding side spool 5.

  As shown in FIG. 3, the ink ribbon 1 is bridged between the shaft 8 of the supply side spool 2 and the shaft 10 of the take-up side spool 5. The ink ribbon 1 is used for printing with ink attached to a recording paper. For example, a sublimation dye of three colors of yellow, magenta and cyan or four colors of yellow, magenta, cyan and black on a film sheet. Is applied at a constant pitch and an overcoat layer is provided.

Next, the assembly of the ink ribbon spool configured as described above will be described.
First, the supply-side spool 2 and the winding-side spool 5 are placed inside each other with the outer peripheral edge 6c of the flange 6 of the winding-side spool 5 in contact with the guide projection 9 provided on the outer surface 3a of the supply-side spool 2. Press on. At this time, if the position of the projection 4 formed on the flange 3 of the supply side spool 2 and the hole 7 formed on the flange 6 of the take-up side spool 5 are shifted and they do not fit, The edge of the flange 6 of the side spool 5 rides on the protrusion 4 of the flange 3 of the supply side spool 2 and warps outward.

  In this state, if the take-up spool 5 is slightly rotated in either the direction of the arrow B or C shown in FIG. 1, the protrusion 4 and the hole 7 are adjacent to each other at two locations as shown in FIG. The assembly of the supply side spool 2 and the take-up side spool 5 is completed. Thereby, since the fitting state of the protrusion 4 and the hole 7 is stable and both spools are not easily separated, the handling convenience of both spools is improved.

  When the supply-side spool 2 and the take-up spool 5 are pulled apart, the take-up spool 5 is slightly rotated in either the direction of the arrow B or C shown in FIG. Release and pull both spools outward.

  In the above embodiment, the case where the guide protrusion 9 is provided on the outer side surface 3a of the flange 3 of the supply side spool 2 has been described. However, the present invention is not limited to this, and the guide projection 9 is formed on the inner side surface 3b of the winding side spool 5. May be. Moreover, although the case where the hole 7 which penetrates the flange 6 of the winding side spool 5 was provided was demonstrated, it is not restricted to this, You may provide a recessed part in the inner surface 6b of the flange 6. FIG.

  In the above description, the protrusion 4 is provided on the outer surface 3a of the flange 3 of the supply side spool 2, and the hole 7 penetrating from the outer surface 6a of the flange 6 of the winding side spool 5 to the inner surface 6b is formed. However, the present invention is not limited to this, and the projection 4 is provided on the outer surface 6a of the flange 6 of the take-up spool 5, and the hole 7 penetrating from the outer surface 3a of the flange 3 of the supply-side spool 2 to the inner surface 3b is formed. May be. In this case, the interval L1 between the flanges 6 of the take-up side spool 5 shown in FIG. 3 is formed to be narrower than the interval L2 between the flanges 3 of the supply side spool 2.

  Further, the hole 7 is not limited to a long hole formed with a predetermined length in the circumferential direction, and may be a circular hole. In this case, the same number of circular holes 7 are formed corresponding to the protrusions 4. Furthermore, instead of the circular hole 7, a circular recess may be formed.

It is a perspective view which shows embodiment of the ink ribbon spool by this invention. It is a side view of FIG. It is the sectional view on the AA line of FIG. It is a perspective view which shows the conventional ink ribbon spool. In the conventional ink ribbon spool, it is a side view which shows the stable fitting state of a protrusion and a hole. In the conventional ink ribbon spool, it is a side view which shows the unstable fitting state of a protrusion and a hole.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Ink ribbon 2 ... Supply side spool 3 ... Flange 3a ... Outer side 3b ... Inner side 4 ... Protrusion 5 ... Winding side spool 6 ... Flange 6a ... Outer side 6b ... Inner side 6c ... Outer peripheral edge 7 ... Hole 9 ... Guide Protrusion

Claims (4)

A plurality of protrusions formed at predetermined intervals on the same circle on the side surfaces of the flanges provided on both sides, and a supply-side spool for winding the ink ribbon;
A plurality of holes or recesses that are fitted with projections of the supply side spool at predetermined intervals on the same circle on the side surfaces of the flanges provided on both sides, and a winding side spool that winds up the ink ribbon;
An ink ribbon spool comprising:
Of the supply side spool and the take-up side spool, on the side surface of the flange of one of the spools, the two adjacent protrusions of the supply side spool in contact with the outer peripheral edge of the flange of the other spool and the take-up side An ink ribbon spool characterized in that a guide protrusion is formed to guide two adjacent holes or recesses of the spool so as to fit each other. A plurality of holes or recesses formed at predetermined intervals on the same circle on the side surfaces of the flanges provided on both sides, and a supply-side spool for winding the ink ribbon;
A plurality of protrusions that fit into holes or recesses of the supply-side spool at predetermined intervals on the same circle on the side surfaces of the flanges provided on both sides, and a winding-side spool that winds up the ink ribbon;
An ink ribbon spool comprising:
Of the supply side spool and the take-up side spool, on the side surface of the flange of one of the spools, the two adjacent holes or recesses of the supply side spool in contact with the outer peripheral edge of the flange of the other spool and the winding An ink ribbon spool characterized in that a guide protrusion is formed so that two adjacent protrusions of a take-up spool are fitted to each other.   The ink ribbon spool according to claim 1, wherein the guide protrusion is formed on an outer surface of a flange of the supply-side spool.   The ink ribbon spool according to claim 1, wherein the plurality of holes or recesses are formed to extend in a circumferential direction with a predetermined length.

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