JPS58191184A - Apparatus for sending ribbon of typewriter - Google Patents

Abstract

PURPOSE:To prevent danger due to the tooth tip of a pitch roller, by accommodating a first and a second pitch rollers in a carbon ribbon case and a correcting ribbon case. CONSTITUTION:A support 16 is pushed to the direction of an arrow to part pitch rollers 14, 15 from a position opposed to wind-up wheels 22, 24 of a correcting ribbon and a carbon ribbon and protruded pieces 7, 7' provided to the front side of a correcting ribbon case 2 is inlaid with recessed parts 5, 5' provided to the front side of a platform 1 while the case 2 is pressed downwardly to introduce protruded pieces 6, 6' provided to the rear side thereof into cut and erected engaging parts 4, 4' provided to the rear part of the platform in a repulsive state to mount the case 2 to the platform 1. Subsequently, a carbon ribbon case 3 is mounted by similar operation and feed levers 19, 20 are reciprocally moved to intermittently drive feed gears 17, 18 individually and the ribbons 12, 13 are fed quantitatively.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a feeding device for carbon ribbons and correction ribbons in typewriters. In order to simplify operation, modern typewriters use a cassette-type ribbon case in which a carbon ribbon and a correction ribbon are each housed in a cassette case. Generally, a modified ribbon case is arranged on the lower side and a carbon ribbon case is arranged on the upper side, an opening is provided on the side of each ribbon case, and a pitch roller is pressed against the ribbon winding shaft of t. ≠ f child ≠ 4 to 4 ≠, pitch roller to f
+4J is driven intermittently to rotate the ribbon take-up shaft and pull out the ribbon. However, this method has an opening on the side of the ribbon case, which makes it unsightly, and the sharp tips of the pitch rollers make the opening on the side of the ribbon case.
Therefore, a maintenance cover is required to prevent danger. The present invention aims to solve this problem.

Embodiments of the invention will be explained with reference to the drawings. 1 is a ribbon case frame, 2 is a modified ribbon case, and 5 is a carbon ribbon case. Reference numeral 4.41 denotes a pair of cut and raised locking portions provided at the rear of the pedestal 1, into which a pair of projections 6.6' provided at the rear of the correction ribbon case 2 are fitted. Reference numeral 5.51 denotes a pair of recesses provided at the front of the pedestal 1, into which a pair of protrusions 7.71 provided at the front of the correction ribbon case 2 are fitted. 8,
The cut-and-raised locking portion 4.4117) of the B+Jd frame 1 is a pair of needle-raised locking portions provided at a position one step higher than the cut-and-raised locking portion 4.4117). A pair of protrusions 1o and 1o1 are attached to each other. 9.91 is frame 1
A pair of protrusions 11.11' provided at the front of the carbon ribbon case 3 are fitted into the pair of recesses provided at a position 91 steps higher than the recess 5.51. 14 is a first pitch roller that performs under-quantification of the carbon ribbon 12; 15#';
i A second pitch roller that performs under-dosing of the correction ribbon 13, and these first and second pitch rollers 14.15
are provided on a common support 16 concentrically and with double axes, and the support 16 is attached to the frame 1 so as to be movable in the direction of the arrow. 17 is a feeding gear provided coaxially with the pitch roller 14;
18#i With the under gear provided coaxially with the pitch roller 15,
These are rotated by the reciprocating movement of the under/under lever 19.2 degrees.

The modified ribbon case 2 has a pair of ribbon winding shafts 2 inside it.
2.22', and the first winding shaft 22 is connected to the pitch roller 1.
5, the correction ribbon 15, which has been drawn on the winding shaft 22' of the connection 2, is wound onto the first winding shaft 22. This modified ribbon case 2 has a through hole 21 through which the pitch rollers 14, 15 pass, a first winding shaft 22 is disposed adjacent to the through hole 21, and the pitch roller 15 faces this.

Like the modified ribbon case, the carbon ribbon case 3 also has a pair of ribbon winding shafts 24, 24' therein, and a first
The carbon ribbon 12 wound around the second winding shaft 24' is wound onto the first winding shaft 24 by driving the winding shaft 24 with the pitch roller 14. The carbon ribbon case 3 has an opening 23 into which the pitch roller 14 enters, and a take-up shaft 24 of the feeder 1 is provided adjacent to the opening 25 and faces the pitch roller 14. The opening 25 provided in the standard ribbon case 5 and the through hole 21 provided in the modified ribbon case 2 have sufficient width to allow movement of the pitch rollers 14 and 15 due to movement of the support base 16. 25.25'Fi is the operating fulcrum provided beyond the pedestal 1.

Next, its effect will be explained. When mounting the ribbon case on the pedestal 1, use a lever (not shown) to push the support 16 in the direction of the arrow to correct the position of the pitch roller 14.15 so that it faces the winding shaft 22.24 of the ribbon and carbon ribbon. First, fit the protrusion 7.71 on the front of the correction ribbon case 2 into the recess 5.51 on the front of the pedestal 1,
Press the correction ribbon case 2 downward and remove the protrusion 6 behind it.
．． Cut and raise 61 on the other side of pedestal 1 1 locking part 4.4'
Press-fit elastically. The corrected ribbon case 2 is thus attached to the pedestal 1. The carbon ribbon case 5 is installed in the same manner after the modified ribbon case 2 is installed. After the attachment of these two ribbon cases is completed, the support body 16 is returned to its original position and becomes ready for use. That is, due to the reciprocating movement of the feed lever 19, 20, the insufficient gear 1
7.18 are individually and intermittently driven, and the pitch roller 14
．． 15 operates to under-quantitate the carbon ribbon 12 and the correction ribbon 15. When removing the ribbon case from the pedestal 1, the support body 16 is similarly moved in the direction of the arrow, and the projecting piece of the ribbon case is released from the locking portion and the recessed portion of the pedestal 1.

As described above, the ribbon feeding device l of the present invention includes the first pitch roller 14 for feeding the winding shaft 24 of the carbon ribbon 12, and the second pitch roller 14 for feeding the winding shaft 22 of the correction ribbon 13. The roller 15 is provided on a concentric 2TL axis and rotatably supported by a common support 16, and this support 16 is movably attached to the frame 1, and the carbon ribbon 12 and Modified IJ Hon 1
The carbon ribbon case 3 and the correction ribbon case 2 each separately housing the carbon ribbon case 3 and the correction ribbon case 2 are removably mounted on the carbon ribbon case 6, and the correction ribbon case 2 has the first and second pitch rollers. A penetrating opening 21 is provided in the carbon ribbon case 3, and an opening 25 into which the first pitch roller 14 enters is provided.
1 and the opening 25, respectively, are provided with a winding shaft 22 for winding the correction ribbon 15 and a winding shaft 24 for winding the carbon ribbon 12, so that the following effects can be achieved. be.

The first and second pitch rollers 14 and 15 are housed inside the carbon ribbon case 3 and the correction rib/case 2, and the sharp tips of the pitch rollers 14 and 15 are not exposed to the outside, so they are safe. The conventional ribbon case has an opening on the l111 side, and the sharp tooth tips of the pitch rollers are exposed to the outside, so a protection cover is required to prevent danger, but the present invention eliminates the need for this. In addition, the ribbon case of the present invention has no openings on the sides, so it looks good.

Improve the molding strength of the case. Furthermore, in the present invention, the carbon ribbon case 3, which is frequently replaced, is placed on top of the correction ribbon case 2, which is rarely replaced, so that it has many excellent effects such as convenient use. have

[Brief explanation of the drawing]

The figure is an exploded perspective view of an embodiment of the invention. [Symbol] 1... Frame, 2... Modified ribbon case, 3
...carbon ribbon case, 4.41.81.8'...locking part, 5.51.9.9
1... recess, 6.6-17.71.10.10', 1
1.111...Protrusion piece, 12...Cassiposi ribbon, 1
3... Correction ribbon, 14.15... Pitch roller,
16...Support, 17.18...Insufficient gear, 19.
20...Insufficient lever, 21...Through hole, 22.22
', 2ζ241... Winding shaft, 25... Opening, 25,
251...Operating fulcrum

Claims (1)

[Claims] (1) Scheme 1 for reducing the winding shaft of carbon ribbon
A pitch roller and a second pitch roller for feeding the winding shaft of the correction ribbon are provided on a concentric double shaft and rotatably supported by a common support, and this support is movable to a frame. Attachment: A carbon ribbon case and a correction ribbon case each separately accommodating the carbon ribbon and the correction ribbon wound on a pair of winders are placed on the mount;
A carbon ribbon case is removably attached to the corrected ribbon case & below, and the corrected ribbon case has a through hole through which the first and second pitch rollers pass.
The carbon ribbon case is provided with an opening through which the first pinch roller enters, and a winding shaft for winding the correction ribbon and the winding shaft are located close to the cough opening and the opening. Ribbon feeding device for a typewriter, characterized in that each is provided with a winding shaft for winding the carbon ribbon (2) The carbon ribbon case and the modified ribbon case each have a pair of protrusions at the front and rear thereof. have,
It is characterized in that it is detachably attached to the pedestal by elastically press-fitting the projecting pieces into a pair of recesses and locking portions at different levels provided at the front and rear of the pedestal. (5) The opening provided in the carbon ribbon case and the through hole provided in the modified ribbon case enable movement of the front pitch roller by movement of the support base. The ribbon reducing device for a typewriter according to claim (1), characterized in that the device has a width sufficient to