JPH0480079A - Mask protective structure of ribbon cartridge - Google Patents

Abstract

PURPOSE:To prevent the deformation of the mask attached to a ribbon cartridge by providing a plurality of projections protruding above the mask from a cartridge main body in the thickness direction thereof to the surface and rear of the cartridge main body so as to make it possible to protect the mask when the ribbon cartridge is horizontally placed. CONSTITUTION:Two projections 22 are provided to the surface of a cartridge main body 21 and two projections 23 are provided to the rear thereof. These projections 22, 23 are provided at the positions close to a mask 3 so as to protrude above the mask 3 in the thickness direction of the cartridge main body 21. Therefore, when the cartridge main body 21 is placed on a table 106 so that the surface thereof is turned upwardly, the projections 23 are supported on the table 106 to protect the mask 3. When the cartridge main body 21 is placed on the table 106 so that the rear thereof is turned upwardly, the projections 22 are supported on the table 106 to protect the mask 3.

Description

[Detailed Description of the Invention] [Summary] Regarding a mask protection structure for a ribbon cartridge equipped with a mask, the present invention aims to improve the reliability of the ribbon cartridge by preventing deformation of the mask attached to the ribbon cartridge. In a ribbon cartridge in which a mask that covers an exposed portion of the ribbon is attached to the cartridge body, a mask is attached to the front and back of the cartridge body in the thickness direction from the cartridge body so as to protect the mask when the ribbon force center is placed horizontally. The structure includes a plurality of protrusions each protruding beyond the mask.

(Industrial Application Field) The present invention relates to a mask protection structure for a ribbon cartridge equipped with a mask.

Ribbon cartridges used in dot matrix printers are often fitted with masks to prevent contamination. This mask is prone to deformation and therefore requires protection of the mask.

[Conventional technology]

FIG. 3 is a perspective view of the conventional masked ribbon cartridge 1 seen from the front, and FIG. 4 is a perspective view of the same seen from the rear. In the figure, 2 is a cartridge main body, and 3 is a mask.

The cartridge main body 2 incorporates an endless ribbon 4, and the ribbon 4 is pulled out from the folding storage section 6 in the cartridge main body 2 by the rotation of the feed roller 5 in the direction of the arrow in FIG. After being pulled out and guided to the outside through one of the guide sections 7, it is drawn into the cartridge main body 2 through the guide section 8, and then pushed into the folding storage section 6 through the feed roller 5 and the pinch roller. 9 is a knob coaxial with the feed roller 5, and 10.11 is a pair of levers attached to the cartridge body 2. The levers 10 and 11 engage with a holder on the carriage side when the ribbon cartridge 1 is mounted on the carriage of the printer.

The mask 3 is attached to the cartridge body 2 so as to cover the ribbon 4 exposed between the guide parts 7 and 8. 12
13 is an opening for printing (for protruding printing wires) provided in the mask 3.

The procedure for installing this τl Bonker string 1 in a printer will be explained as follows.

Turn off the power switch, as shown in Figure 5 (al),
Open the front cover 101 and press the paper thickness adjustment lever 102.
into position. As a result, the print head 103
This increases the distance between the platen 104 and the ribbon cartridge, making it easier to mount the ribbon cartridge.

Next, the print head 103 is moved to the cover notch 101a. Before installing the ribbon cassette 1, rotate the knob 9 in the direction of the arrow in Figure 4 to eliminate slack in the ribbon, and then, as shown in Figure 5 (b+), remove the ribbon while pinching the lever 1011 of the ribbon cartridge 1. Hold the protrusion 14 of the cartridge and holder 1 on the carriage side.
05, and the lever 10.11 is connected to the holder 105.
Push it in until it is pushed into place. In this state, the foot roller 5 engages with the drive system on the printer side. Next, while moving the print head 103 left and right, it is confirmed that the knob 9 is rotating in the direction of the arrow, and the front cover 101 is closed to complete the mounting.

[Problems to be Solved by the Invention] As mentioned above, the mask attached to the cartridge body is easily deformed, and if the ribbon cartridge before mounting is placed horizontally on a table etc. (If the main body is placed with the front or back side facing down), force will be applied to the mask and it will deform, making it difficult to mount it on the printer. Furthermore, even if it can be installed, it may get caught on the recording paper, causing a decline in the performance of the printer itself.

SUMMARY OF THE INVENTION An object of the present invention is to provide a mask protection structure for a ribbon cartridge that can prevent deformation of the mask attached to the ribbon cartridge and improve reliability of the ribbon cartridge.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a ribbon cartridge in which a mask for covering an exposed portion of the ribbon is attached to the cartridge body, and the ribbon cartridge 7 is provided on the front and back of the cartridge body. In order to protect the mask when the cartridge is placed horizontally, a plurality of protrusions projecting from the cartridge body in the thickness direction beyond the mask are respectively provided.

[For production]

Since a plurality of protrusions as described above are provided on each of the front and back sides of the cartridge body, when placing the ribbon cartridge on a table etc. with the front or back side of the cartridge body facing down (laying it horizontally). , the mask will be protected from hitting the table no matter how you place it.

[Example] The present invention will be described in detail below with reference to FIGS. 1 and 2.

The first is a front view showing the mask protection structure of the ribbon cartridge/nozzle 20 of this example, and in the figure, 21 is the cartridge, the main body,
3 is a mask similar to the conventional one.

Two protrusions 22 are provided on the front surface of the cartridge main body 21, and two protrusions 23 are provided on the back surface G of the cartridge main body 21.
The mask 3 is provided at a position close to the mask 3;
This stands out.

Therefore, the 20 cartridge body 21 is as shown in FIG. 2(a).
When the mask 3 is placed on the chiffle 106 with its surface facing up as shown in FIG. 5, the projections 23 are supported by the table 106 and the mask 3 is protected. Further, as shown in FIG. 2(b), place the cartridge body 21 on the table 106 with the back side facing up.
When placed on top, the protrusions 22 are supported by the table 106 and the mask 3 is protected.

In the above description, an example was described in which two protrusions 22 and two protrusions 23 are provided on each of the front and back surfaces of the cartridge body 21 at positions close to the mask 3.
Protrusions may be additionally provided at other locations 22 on the front and back sides of 1.

〔Effect of the invention〕

As described above, according to the present invention, a plurality of protrusions are provided on the front and back sides of the cartridge body that protrude more than the mask in the thickness direction, so that when the ribbon cartridge 7 is placed on a table or the like, the mask are protected by these projections.

Therefore, it is possible to prevent deformation of the mask, which has been a problem in the past, before mounting the ribbon cartridge, and it is possible to facilitate the mounting of the ribbon cartridge and stabilize the running of the medium.

[Brief explanation of drawings]

FIG. 1 is a front view showing a mask protection structure for a ribbon cartridge according to an embodiment of the present invention; FIGS. Figure 4 is a perspective view of a conventional masked ribbon cartridge as seen from the front; Figures 5 (a) and (b) are explanations of the mounting procedure for the ribbon cartridge; In the figure, 3 is the mask, 20 is the ribbon cartridge, 21 is the main body of the cartridge 7, and 22 and 23 are the protrusions. Patent applicant: Fujitsu Co., Ltd. (one other person) agent, patent attorney Akira Aitani Tsukasa

Claims (1)

[Claims] In a ribbon cartridge in which a mask (3) that covers an exposed portion of the ribbon is attached to a cartridge main body (21), when the ribbon cartridge is placed horizontally on the front and back surfaces of the cartridge main body (21). the cartridge body (21) so as to protect the mask (3) during
1. A mask protection structure for a ribbon cartridge, characterized in that a plurality of protrusions (22) and protrusions (23) are respectively provided that protrude beyond the mask (3) in the thickness direction from ).