JPH0630453Y2 - Ink ribbon cartridge loading structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink ribbon cartridge loading structure for a serial printer, which facilitates loading of an ink ribbon cartridge into a printer.

[0002]

2. Description of the Related Art Conventionally, as for this kind of ink ribbon cartridge, there is a device as disclosed in, for example, Japanese Utility Model Laid-Open No. 55-107358. This device has a structure as shown in the perspective view of FIG. That is,
The ink ribbon cartridge 1 has a cover 4 covering an upper surface of a case 3 accommodating the ink ribbon 2, and a locking leg 5 having a hook-like elasticity provided integrally with the cover 4 and having the locking leg. The tip of 5 is inserted into and locked by a holding table 6 provided on a carriage having a print head (not shown).

[0003]

In the ink ribbon cartridge loading structure as described above, the tips of a plurality of hook-shaped elastic legs formed integrally with the cover 4 are used as the cartridge holding table. The locking has the advantage that the ink ribbon cartridge is positioned. However, due to the miniaturization of the ink ribbon cartridge and the improvement of the handleability accompanying the miniaturization of the printer main body, a ribbon protector (FIG.
In addition to the print head and the platen, a front guide plate is provided, and an indicator for displaying the print character position is arranged above the front surface of the platen due to the downsizing of the printer. The gap between them (called the platen gap) is extremely small, and it is difficult to determine the exact position when loading the ink ribbon cartridge. Hook the ribbon protector or guide plate above the indicator or print head There is a problem such as bending or breaking. Then, if the printer is operated as it is, it will cause a stain on the printing paper or a jam, which is not suitable for mounting the current serial printer.

In order to solve such problems, it is an object of the present invention to obtain an ink ribbon cartridge loading structure in which an ink ribbon cartridge can be easily loaded.

[0005]

SUMMARY OF THE INVENTION The present invention provides an ink ribbon cartridge loading structure having a cartridge holder for engaging with and loading an ink ribbon cartridge, wherein the cartridge holder is provided on both sides of the ink ribbon cartridge. A table having a pair of locking holes to be fitted with a pair of locking legs made of an elastic body provided at a substantially central portion of the surface, on which the cartridge is placed, and the ink ribbon cartridge on the table. A center of rotation when the ink ribbon cartridge is loaded into the cartridge holder by contacting with a pair of recesses provided on the pair of side walls that regulate the movement in the left-right direction and provided on both rear side surfaces of the ink ribbon cartridge. And a pair of projections that regulate the rearward and upward movement of the rear end of the ink ribbon cartridge. The ink ribbon cartridge is loaded on the cartridge holder by the rotation of the ink ribbon cartridge with the protrusion on the cartridge holder as the center of rotation, and the protrusion and the recess are engaged with each other. It is characterized in that the ink ribbon cartridge is fixed to the cartridge holder by the engagement between the engagement hole and the pair of engagement legs.

[0006]

According to the present invention, in the ink ribbon cartridge loading structure, the cartridge holder is fitted with a pair of engaging legs made of elastic bodies provided at substantially central portions on both sides of the ink ribbon cartridge. A table having a stop hole and a pair of side walls for restricting the horizontal movement of the ink ribbon cartridge on the table are provided, and the ink is brought into contact with a pair of recesses provided on both rear side surfaces of the ink ribbon cartridge. Since the ribbon cartridge has a pair of projections that serve as a center of rotation when the cartridge is loaded into the cartridge holder and that regulate the movement of the rear end of the ink ribbon cartridge in the backward and upward directions, Restricts rearward and upward movement of the rear end, and facilitates rotation of the ink ribbon cartridge. The cartridge can be loaded to the cartridge holder.

Further, since the ink ribbon loading structure of the present invention has such locking holes and protrusions, the ink ribbon cartridge can be securely fixed to the cartridge holder.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 3 shows an embodiment of the ink ribbon cartridge used in the present invention, (a) is a perspective view showing the whole, and (b) is a top view of the front part thereof. As shown in (a), the ink ribbon cartridge 11 has an ink ribbon 12
And a cover 11b. A recess 11c serving as a pivot point is provided on both sides of a rear end of the case 11a and a locking leg 11d having a tip-like elasticity is integrally provided on both sides of the central portion. Has been. Reference numeral 11e is an insertion window for a print head or the like, and reference numeral 14 is a knob for a manual ink ribbon feed projecting to the outside of the cartridge, which is integral with the shaft of a feed roller (not shown) of the ink ribbon 12. Then, as shown in (b), the ribbon protector 13 is disposed on the front surface of the ink ribbon 12 to prevent the printing paper from being soiled.

FIG. 4 is a perspective view showing a cartridge holding table provided on the carriage for holding the above-mentioned ink ribbon cartridge 11. As shown in the figure, the cartridge holding table 15 includes a cartridge holding table 15, a pair of side walls 15e that serve as guides on the side surface of the ink ribbon cartridge 11 and restrict the lateral movement of the cartridge, and the ink ribbon cartridge 1
The pair of protrusions 15a that fit into the recess 11c provided in the first portion to form a pivotal support portion and the locking legs 11d provided in the ink ribbon cartridge 11 fit into the ink ribbon cartridge 1
A pair of locking holes 15b for locking 1 to the cartridge holding table 15, locking legs 15c for locking the cartridge holding table 15 to the carriage, and the manual ink ribbon feed knob 14 described above. It has a power shaft 15d for feeding the ink ribbon 12.

FIG. 1 shows a state in which the ink ribbon cartridge 11 having the above structure is loaded on the cartridge holding table 15. As shown in the figure, the ink ribbon cartridge 11 (see FIG. 4) is inserted into the cartridge holding table 15 with the rear part tilted downward. In this case, the concave portion 11c provided at the rear end of the case 11a of the ink ribbon cartridge 11 is attached to the cartridge holding table 1
The protrusion 15a formed on the plate 5 is pushed down and locked. As a result, the ink ribbon cartridge 11 is pivotally supported by the cartridge holding table 15 in the concave portion 11c, is rotatable in the direction of arrow A, and the ink ribbon cartridge 11 is positioned on the cartridge holding table 15.

Next, when the front portion of the ink ribbon cartridge 11 is pushed down in the direction of arrow A, the ink ribbon cartridge 11 is easily rotated and its locking leg 11b is moved in the direction of arrow B to engage the cartridge holding table 15. Stop hole 15
It is inserted in b and locked as shown in FIG. In this way, the ink ribbon cartridge 11 is securely held on the carriage 17 via the cartridge holding table 15 without interfering with the print head 16, the platen 19, the indicator 20 and the like, and without damaging the ribbon protector 13. Be locked. Here, 21 is a pressure roller.

[0013]

As described above in detail, according to the present invention, since the cartridge holder pivotally supports the rear end of the ink ribbon cartridge, the protrusion on the cartridge holder serves as the center of rotation of the ink ribbon cartridge. This cartridge is loaded by the rotation of. By this loading, the ink ribbon cartridge is fixed to the cartridge holder by the engagement of the protrusion of the cartridge holder and the recess of the cartridge and the engagement of the engagement hole of the cartridge holder with the engagement leg of the cartridge.

Since the present invention is constructed as described above, it is possible to accurately position the ink ribbon cartridge. When the front end of the cartridge is pushed down, the rear end of the cartridge is restricted from moving backward and upward by the protrusion of the cartridge holder, so that the protrusion is rotated about the protrusion. By further pushing down, the locking leg of the ink ribbon cartridge is fitted and locked in the locking hole of the cartridge holder, and is fixed to the cartridge holder by the engagement of the locking leg and the recess. Further, at the time of this pushing down, since the ink ribbon, the ribbon protector, the ink ribbon guide plate, etc. in the front part of the ink ribbon cartridge pass the accurate and stable track in the middle step, even in the extremely narrow gap, that is, the platen gap part, The ink ribbon and ribbon protector can be loaded without being bent or damaged. Therefore, it is possible to obtain the ink ribbon cartridge loading structure that is very easy for the operator to handle.

[Brief description of drawings]

FIG. 1 is an initial state diagram for loading an ink ribbon cartridge on a holding table for explaining the present invention.

FIG. 2 is a completed view in which an ink ribbon cartridge is loaded on a holding table for explaining the present invention.

3A and 3B are views showing an embodiment of an ink ribbon cartridge for explaining the present invention, in which FIG. 3A is a perspective view thereof and FIG.
Is a top view of the front part.

FIG. 4 is a perspective view showing an embodiment of a cartridge holding table for explaining the present invention.

FIG. 5 is a perspective view showing an embodiment of an ink ribbon cartridge loading structure for explaining a conventional technique.

[Explanation of symbols]

 11 Ink Ribbon Cartridge 11a Case 11b Cover 11c Recess 11d Locking Leg 11e Insertion Window 12 Ink Ribbon 13 Ribbon Protector 14 Ribbon Feed Knob 15 Cartridge Holding Table 15a Projection 15b Locking Hole 15c Locking Leg 15d Power Shaft 15e Side Wall

Front page continuation (72) Inventor Takashi Itaya 1-7-12 Toranomon, Minato-ku, Tokyo Within Oki Electric Industry Co., Ltd. In-house (56) Bibliography Sho 59-120168 (JP, U) Rikai 57-22952 (JP, U) Rikai 55-144059 (JP, U) Rikai 56-98461 (JP, U) ) Actual public Sho 59-31419 (JP, Y2)

Claims (1)

[Scope of utility model registration request] 1. In an ink ribbon cartridge loading structure having a cartridge holder for engaging with the ink ribbon cartridge and loading the cartridge, the cartridge holder is elastic provided at substantially central portions of both side surfaces of the ink ribbon cartridge. A table having a pair of locking holes to be fitted with a pair of locking legs formed of a body, and a pair of tables positioned on the side of the table and for restricting the lateral movement of the ink ribbon cartridge on the table. The side wall and a pair of recesses provided on the side wall and on both rear side surfaces of the ink ribbon cartridge are in contact with each other to serve as a rotation center when the ink ribbon cartridge is loaded into the cartridge holding body and the ink ribbon. A pair of protrusions for restricting rearward and upward movement of the cartridge rear end, The ink ribbon cartridge is loaded on the cartridge holder by the rotation of the ink ribbon cartridge around the protrusion on the cartridge holder, and the protrusion and the recess are engaged and locked. An ink ribbon cartridge loading structure configured such that the cartridge is fixed to the ink ribbon cartridge holder by engagement of the hole and a pair of locking legs.