JPS62160260A - Ink ribbon cassette - Google Patents

Abstract

PURPOSE:To prevent the rushing of a ribbon from a ribbon receiving port to an outlet part, by providing a rib having a guide part to an ink ribbon case. CONSTITUTION:Ribs 11, 12 gently rising and steeply falling from the upstream side to the downstream side in ribbon feed in the thickness direction of a ribbon are respectively provided to an upper case 1a and a lower case 1b. The ribbon is smoothly fed to the direction shown by an arrow by the oblique surfaces 11a, 12a of the ribs 11, 12 without hooking with the rigs.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an ink ribbon cassette containing fabric ribbons in an irregularly stacked state.

(Conventional Example) FIG. 1 shows an ink ribbon cassette using a general fabric ribbon.

1 is a case consisting of an L case and a lower case, and storage part 2
Ribbons 3 are irregularly stacked and stored inside. The stored ribbon 3 passes through a substantially dogleg-shaped rib 4 that is integrally provided on the upper case and the lower case, passes between a pair of rollers 5.6, and is then transferred to the outside by a pair of arms 7.8. will be guided to expose themselves to The exposed ribbon 3 is meshed and held by a feed gear (not shown) provided integrally with the feed knob 9 and a suppression gear 10, and is wound up in the direction a by rotating the feed knob 9 in the direction of the arrow. It is stored in the storage section 2 again.

Here, the function of the rib 4 is to prevent the ribbon in the storage section 2 from flooding the pair of rollers 6111'1 when the ribbon is wound up by the feed knob 9 and stored in the storage section 2. That's true.

(Problems to be Solved by 5I5Mei) In the ribbon cassette having the structure described above, ribs 4 have conventionally been formed as shown in FIG.

That is, the ribs 4 protrude perpendicularly from the upper case la and the lower case lb, respectively, and their vertical rising portions 4a
However, this hindered the smooth feeding of the ink ribbon.

(Means for Solving the Problem) A rib having a guide portion that gently rises in the width direction of the ribbon from the upstream side to the downstream side is provided on the way from the ribbon storage section to the arm section.

(Embodiment) FIG. 1 shows an embodiment of the present invention, and the parts not shown are the third embodiment.
In this embodiment, each of the upper case la and the lower case 1b has a shape that rises gently from the upstream side to the downstream side in the ribbon feeding direction in the thickness direction of the ribbon, or rises suddenly. Fallen ribs 11, 12
are provided integrally. Slope 11a of ribs 11, 12.

12a allows the ribbon to be smoothly fed in the direction of the arrow without being caught.

FIG. 2 shows another embodiment, in which the upper case la is shown.

A plurality of ribs 13a are provided on each lower case lb.

13b, 13c and 14a, 14b, 14c are provided.

Here, the ribs 13a, 13b, 13c and 14a, 14b
, 14c are protrusions with semicircular tips, and the heights of the protrusions gradually increase from the upstream side to the downstream side. Here, the shortest ribs 13a, 1
4a is set to the maximum length at which the ribbon will not be caught at the rising portion.

(Effects) By providing the ribs of the present invention as described above, it is possible to prevent ribbons from rushing from the ribbon storage section to the outlet section, and moreover, the ribbons are not caught on the ribs.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention. FIG. 2 is a sectional view of another embodiment, and FIG. S3 is an explanatory diagram showing the structure of a normal ink ribbon cassette. FIG. 4 is a sectional view of a conventional example. 1a --- Upper case 1b --- Lower case 2 ---
- Storage part 3 ---- Ribbon 7.8 ---- Arm 11.12, 13a, 13b, 13c.

Claims (1)

[Claims] A storage section that stores irregularly stacked ink ribbons;
In an ink ribbon cassette having an arm section that exposes the ink ribbon pulled out from the storage section to the outside and guides it back to the storage section, the ribbon is guided from the storage section to the arm section in the width direction of the ribbon and from the upstream side to the downstream side. An ink ribbon cassette characterized by being provided with a rib having a guide portion that gently rises in the direction of the ink ribbon cassette.