JPH0346929Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a refill ribbon sub-cassette that stores an endless ink ribbon (hereinafter simply referred to as ribbon) in a folded state.

[Background of the idea]

The ribbon cassette has an entrance section 8 as shown in FIG. 4 to reduce ribbon running resistance caused by contact between the ribbon and the side wall inside the ribbon cassette, and to ensure that the ribbon is stored uniformly within the ribbon cassette. The folded width L ₄ of the ribbon cassette and the width L ₅ within the ribbon cassette satisfy L ₄ <L ₅ .

The ribbon 1 stored in the ribbon sub-cassette 4 in a properly folded manner becomes easily disturbed when loaded into the ribbon cassette 7. As a result, the side walls of the ribbon cassette 7 and the ribbon 1 tend to come into contact with each other, and as mentioned above, the ribbons are not stored uniformly.
The ribbon falls inside the ribbon cassette 7, and the ribbon 1 is twisted or bent, causing serious problems such as omitted characters and printer failures such as damage to printing pins and ribbon traveling parts. Taking these things into consideration, the folding storage width L ₁ of the ribbon sub cassette 4 is L ₁
≦L ₄ <L ₅ .

However, the ribbon sub-cassette 4, which is equipped with a member for preventing the ribbon from falling and a member for reversing the Möbius ribbon 1, that is, the slider 3, has a width L ₃ of the slider 3, which satisfies L ₃ ≒ L _1. .

The member width L ₃ and the ribbon storage width L ₅ are such that L ₃ < L ₅ , but if a certain clearance is provided in the width direction, the slider 3 in the ribbon cassette 7
The running becomes unstable. That is, L ₃
Even if <L ₅ , L ₃ must have a certain width.

The smaller the width of L ₁ with respect to L ₅ , the better, but since the size of L ₃ is limited, L ₁ ≒
The width of _L1 , which is _L3 , was also determined by itself, making it difficult to solve the above-mentioned problems.

In addition, it is possible to set L ₁ < L ₃ < L ₂ in the above configuration, but the storage case width L ₂ and the folded width L ₁ of the ribbon 1 folded and stored
The ribbon 1 becomes disordered in the remaining space between the ribbon 1 and the ribbon 1, so that L ₁ ≒ L ₂ , and in this state, it is loaded into the ribbon cassette 7, so L ₁ becomes increasingly disordered and becomes larger, making it difficult to achieve the purpose. be. Furthermore, it is conceivable to attach a sheet with a small coefficient of friction to the side wall of the ribbon cassette 7 in the above configuration, but since attaching the sheet to the side wall is not easy to work with and the materials of the sheet and the ribbon cassette 7 are different. The sheet is affected by changes in temperature and humidity due to differences in thermal expansion coefficients, etc., and wrinkles occur in the sheet, making it difficult to achieve the purpose.

[Purpose of invention]

An object of the present invention is to provide a ribbon subcassette which eliminates the above-mentioned drawbacks of the prior art and makes it possible to increase the stability of ribbon running within the ribbon cassette.

[Summary of the idea]

The present invention focuses on the fact that by making the folded storage width of the ribbon stored in the ribbon sub-cassette smaller than the width of the ribbon cassette, the ribbon runs stably when loaded into the ribbon cassette. The relationship between the folding storage width, the shape of the slider, and the shape and width of the storage case that stores them has been devised.

[Example of idea]

FIG. 1 is a plan view showing an embodiment of the ribbon sub-cassette 4 of the present invention. The ribbon 1 is stored in a storage case 2 with a folded storage width of L ₁ and a width of L ₂ .
Further, the slider 3 is stored with a portion thereof protruding from the storage case 2, and together with the storage case 2 constitutes a ribbon sub-cassette 4, with L ₁ ≦L ₂ <L ₃ .

FIG. 2 is a perspective view showing the positional relationship of the slit 5 of the slider 3. The position of slit 5 is l ₃ ′<
L ₂ < L ₃ ′ < L ₃ .

FIG. 3 is a perspective view showing the ribbon sub-cassette 4 with the hook 6 of the storage case 2 removed, and shows the ribbon 1
The slider 3 is moved in the direction of the arrow and loaded into the ribbon cassette 7. FIG. 4 is a plan view showing the state in which the ribbon sub-cassette 4 is loaded into the ribbon cassette 7. The ribbon 1 taken in from the entrance part 8 of the ribbon cassette 7 is folded to a width L ₄ ,
It is carried out from the exit section 9 via a running section having a width of _L5 , and the relationship _L4 < _L5 and _L3 < _L5 holds. The hook 6 of the ribbon sub-cassette 4 is removed, and the ribbon 1 and slider 3 are moved in the direction of the arrow and loaded into the ribbon cassette 7.

Both sides of the ribbon 1 stored in the storage case 2 are always held by both side walls of the storage case 2,
There is no change in width L ₁ .

Even after loading into the ribbon cassette 7, L ₁ increases only slightly, so that the relationship L ₁ <L ₅ can be maintained.

In the above embodiment, the relationship among the folded storage width L ₁ of the ribbon 1, the width L ₂ of the storage case 2, and the width L ₃ of the slider 3 was set as L ₁ ≦L ₂ <L ₃ . As shown in the figure, the width of the storage case 2 is increased only in the part where the slider 3 is stored, and the relationship with the width L ₂ ' is set as L ₁ ≤ L ₂ < L ₃ < L ₂ ', and the hook 6 is removed and the ribbon is removed. 1 and the slider 3 may be moved in the direction of the arrow to load the ribbon into the ribbon cassette 7.

[Effect of idea]

As explained above, according to the present invention, the configuration of the ribbon sub-cassette is L ₁ ≦L ₂ <L ₃ (or L ₁ ≦L ₂ <L ₃ <L ₂ ′), so the ribbon is always stored in the storage case. Because it is held by the side wall of the ribbon, it is folded regularly and stored in the ribbon sub-cassette, and even after being loaded into the ribbon cassette, the relationship of L ₁ < L ₅ can be maintained, increasing the stability of ribbon running. I can do it.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing one embodiment of the ribbon sub-cassette of the present invention, Figs. 2 and 3 are perspective views, Fig. 4 is a plan view, and Fig. 5 is another embodiment of the ribbon sub-cassette of the present invention. FIG. 6 is a plan view and a perspective view. In the figure, 1 is an endless ink ribbon, 2
3 is a storage case, 3 is a slider, and 4 is a ribbon sub-cassette.

Claims (1)

[Claims for Utility Model Registration] 1. A ribbon sub-cassette consisting of a slider movably stored in a ribbon cassette and a storage case for storing an endless ink ribbon, wherein the storage width L ₂ of the storage case is L A ribbon subcassette characterized by being set to satisfy the relational expression ₁ ≦ _L2 < _L3 . However, L ₁ is the folded width of the endless ink ribbon, and L ₃
indicates the width of the slider. 2. A ribbon sub-cassette consisting of a slider movably stored in a ribbon cassette and a storage case that stores an endless ink ribbon, wherein the width of the ribbon storage part of the storage case L ₂ and the width of the slider are L ₂ ' A ribbon subcassette characterized in that the ribbon subcassette is set so as to satisfy the following relational expression: L ₁ ≦L ₂ <L ₃ <L ₂ ′. However, L ₁ is the folded width of the endless ink ribbon, L ₃
indicates the width of the slider.