JP2001205879A - Ribbon cassette - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ribbon cassette which can be transferred in a state that a printing/recording quality of recording papers is maintained, and is particularly fitted to miniaturization and thinning. SOLUTION: This ribbon cassette 10 includes a cassette case 11 having a first storage part 12, a second storage part 13 arranged by a predetermined interval spaced from the first storage part 12 and a coupling member 14 for coupling end parts of the first and second storage parts 12 and 13, a rotatable let-off core 40 set in the first storage part 12, a rotatable take-up core 42 set in the second storage part 13, and a broad ink ribbon R which is wound to the let-off core 40 and can be partly wound to the take-up core 42. A pair of guide projections 24 and 24 are projected to both sides in a longitudinal direction of a circumferential wall part of the second storage part 13. When the ribbon cassette 10 is loaded to a line printer 50 having a thermal head 60 for printing/recording to the recording paper 54, marginal parts L outside a printing range on the recording paper 54 printed/recorded by the thermal head 60 are slid in contact with the pair of guide projections 24 and 24, thereby regulating a transfer direction of ten recording paper 54.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ribbon cassette, and more particularly, to a ribbon cassette adapted to a miniaturized line printer so that a printing surface of a recording paper maintains a constant quality.

[0002]

2. Description of the Related Art In general, as a recording apparatus for rapidly performing recording on a recording paper line by line or page by page, a line having a long thermal head in which heating elements are arranged and arranged along the width direction of the recording paper. The printer is being used.

[0003] The ribbon cassette is rotatably disposed in a substantially rectangular cassette case with a take-up core and an output core wound with ink ribbons wound from both ends thereof separated from each other.
A transport path for the ink ribbon that is sent between the two cores and is transported and supplied from the core side to the take-up core side is formed. When this ribbon cassette is mounted on the line printer, the thermal head of the line printer is positioned between the cores, and the thermal head is pressed against the platen via the ink ribbon located on the transport path to perform print recording. Has become.

[0004]

In recent years, in line printers, it has been desired to reduce the size and thickness of the entire printer device, and the ribbon cassette mounted in the line printer has also been required to reduce the size and thickness. In addition, the size of the cassette case has been reduced, and the space between the cassette case and the conveyance path of the recording paper on which printing has been performed tends to be narrow. For this reason, the print recording surface printed and recorded on the recording paper may be rubbed by contact with the outside, and the ink applied by pressure contact may be peeled off from the print recording surface by thermal transfer or the like.

An object of the present invention is to provide a ribbon cassette which maintains the quality of a print recording surface printed and recorded on recording paper,
In particular, it is an object of the present invention to provide a ribbon cassette that is compatible with a line printer that is smaller and thinner.

[0006]

According to a first aspect of the present invention, there is provided a first storage unit, and a second storage unit disposed at a predetermined distance from the first storage unit. A cassette case having a portion, a connecting member connecting side end portions of the first and second storage portions, a rotatable delivery core provided in the first storage portion, and a second storage portion. A rotatable take-up core provided in the portion, and a wide ink ribbon wound around the delivery core and partially windable around the take-up core; Guide projections are protruded from the outer periphery of the unit side, and both ends of the recording paper printed and recorded by the ink ribbon are brought into sliding contact with the guide projections to convey the recording paper.

[0007] As a second solution, the peripheral wall of the second accommodating portion is provided with an inlet for an ink ribbon, and a guide projection is provided close to the inlet, and is inserted from the inlet and taken up by the winding core. The ink ribbon wound around the recording paper is separated from the recording paper.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a ribbon cassette 10 according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the ribbon cassette 10 has a resin-made cassette case 11 having a substantially rectangular shape. The cassette case 11 includes a first storage portion 12 having a cylindrical shape, a second storage portion 13 having the same cylindrical shape and disposed at a predetermined interval from the first storage portion 12, and a first storage portion 13 having the same cylindrical shape. And the second
And a pair of connecting members 14 that respectively connect the ends of the storage portions 12 and 13 to each other, and have a substantially crank-shaped overall cross-sectional shape. The cassette case 11 has a pair of connecting members 14 and first and second storage portions 1 in the center thereof.
A rectangular hole 15 surrounded by the first and second holes 13;
And one side face 11d of a substantially elliptical shape formed by connecting and integrating one end face of each of the storage sections 12 and 13 and one connecting member 14 disposed between the one end faces. The first storage portion 12 is integrally formed with a flat extension portion 12s (see FIG. 8) extending from one edge of the peripheral wall portion 12a toward the pair of connecting members 14,. ing.

As shown in FIG. 2, the pair of connecting members 14 are provided with a flat plate-like wall portion 18 bridging a part between the pair of connecting members 14, and this wall portion 18 The storage unit 12 is disposed so as to face the peripheral wall portion 12a so as to provide a constant space 17 between the peripheral wall portion 12a and the peripheral wall portion 12a. The wall portion 18 is formed integrally with the distal end portion of the extending portion 16 so as to be bent substantially at right angles to the extending portion 16. The edge (second support portion) 18a on the tip end side of the wall portion 18 has a rounded shape and serves as a support portion when the ink ribbon R comes into sliding contact. The first storage portion 12 has a flat extension piece 12t which is disposed on the other edge, which is a free end of the peripheral wall portion 12a, so as to face the extension portion 16.
Are provided integrally. A delivery port 21 for delivering the ink ribbon R wound around the delivery core 40 to the recording apparatus is provided between the extension piece 12t of the peripheral wall portion 12a and the wall portion 18.
It has become.

[0010] As shown in FIG.
A circular side surface portion 12b provided on the other end surface of the cylindrical peripheral wall portion 12a facing the side plate portion 11d, and an opening 20 having the same circular shape are formed in the side surface portion 12b.
At least one or more concave notches 22a, 22b, 22c are regularly arranged on the surface of the side surface 12b so that the type of the ribbon cassette 10 can be identified. The second housing portion 13 is provided with a pair of guide projections 24, 24 protruding outwardly on the outer peripheral surfaces on both side end portions of the peripheral wall portion 13 a, and the guide projections 24, 24 define the peripheral wall portion. Part of the portion 13a is formed in a flat shape.

As shown in FIGS. 3 and 1, the second storage portion 13 has a tapered flange portion 26 which slightly extends outwardly at a large-diameter edge portion of a cylindrical peripheral wall portion 13a. It is provided along the edge, and both ends of the flange portion 26 are integrally connected to each connecting member 14. On the other hand, the edge 13c on the side of the small diameter of the peripheral wall 13a
Is the edge of the peripheral wall portion 13a on the side where the diameter is large (the flange portion 2).
6), they are arranged to face each other so as to form a spiral that enters inside. The guide projections 24, 24 are provided close to the edge 13c of the second storage portion 13 on the side with the smaller diameter. A winding port (introduction port) 27 for winding the ink ribbon R used for recording onto the winding core 42 is provided between the flange 26 and the edge 13c of the peripheral wall 13a. Further, the second storage portion 13 faces the side plate portion 11d similarly to the first storage portion 12, and has a peripheral wall portion 13a.
A circular side surface portion 13b provided on the other end surface of the second member and an opening 28 having the same circular shape as the side surface portion 13b are formed.

As shown in FIG. 4, the cassette case 11 having such an external appearance has one lower case 32, 2
And three upper cases (a first upper case 33 and a second upper case 34). Therefore,
The first storage section 12 includes a part of a lower case 32 (a first semi-cylindrical section 32a to be described later) and a first upper case 33 constituting an upper half thereof. Of the lower case 32 (a second semi-cylindrical portion 32b to be described later) and the second upper case 3 constituting the upper half thereof.
4. The lower case 32 has a first semi-cylindrical portion 32a having a semi-cylindrical shape on both sides thereof, in addition to the side plate portion 11d formed at the side and the hole portion 15 formed at the center, respectively. Second semi-cylindrical portion 32b
And The first and second semi-cylindrical portions 32a, 32b are connected by the pair of connecting members 14.
They are connected.

A rotatable metal shaft (first supporting portion) 19 is attached to the lower case 32 by bridging the side plate portion 11d and the side surface portion 12b (lower half). Are arranged so as to face the extending portion 12s. An ink ribbon R (see FIG. 15) is slidably in contact with the shaft 19.
The shaft 19 having reduced sliding contact resistance may not rotate. Further, instead of the shaft 19 to which the ink ribbon R slides, the shaft 19 is omitted, and the tip of the extending portion 16 is rounded to reduce the sliding contact resistance. May be in direct sliding contact.

As shown in FIGS. 5 and 6, a U-shaped first support wall 32j (see FIG. 8) is provided on the inner wall of the peripheral wall of the first semi-cylindrical portion 32a so as to face the side plate 11d. ) Is erected. The first support wall 32j and the side plate portion 11
d, an elastic mold piece 32m (see FIG. 8) cut and raised inward from the peripheral wall of the first semi-cylindrical portion 32b is provided upright. The part 11d and the first support wall 32j are formed integrally with the peripheral wall part at a certain interval.

On the other hand, the first semi-cylindrical portion 32a has a U-shaped second support wall 32k (FIG. 9) on its inner wall.
Is provided integrally with the side surface portion 12b forming the end surface of the peripheral wall portion at a constant interval. At the center of the wall surface of the second support wall 32k, an engagement protrusion 32n having a triangular cross section is provided so as to face the first support wall 32j.

Similarly, the second semi-cylindrical portion 32b also has
A third support wall 32p is provided on the inner wall of the peripheral wall on the side of the side plate 11d.
Fourth support walls 32q are provided on the inner wall of the peripheral wall portion on the side surface portion 13b side. Then, the second semi-cylindrical portion 32b
The side wall 11d and the third support wall 32 are provided on the inner wall of the peripheral wall.
Similarly to the above-mentioned mold piece 32m, the mold piece 32s is cut and raised to have elasticity. An engagement protrusion 32t having a triangular cross section is provided on the wall surface of the fourth support wall 32q, similarly to the engagement protrusion 32n.

Next, as shown in FIGS. 4 and 12, the first upper case 33 is provided with elastic engaging claws 33d and 33e at both end edges of its peripheral wall.
The second upper case 34 is provided with elastic engaging claws 34 adjacent to the guide projections 24 at both end edges of the peripheral wall portion.
d and 34d are provided.

Next, as shown in FIG.
The winding core 42 is made of a substantially cylindrical member made of resin having the same size, and has a cylindrical base 4 provided at the center.
0a, 42a and bases 40a, 42a provided at one end.
Are composed of small diameter portions 40b and 42b having a diameter smaller than the outer diameter and large diameter portions 40c and 42c having a diameter larger than the base portions 40a and 42a provided at the other end. The large-diameter portions 40c and 42c are provided with flange portions 40d and 42d each having a flange shape at the boundary between the base portions 40a and 42a. The outer surface of the flange portions 40d and 42d has A plurality of rectangular grooves 40e and 42e having a rectangular shape are formed, and are arranged radially uniformly around the axis (see FIG. 10). Then, the base 40a of the delivery core 40
Has an ink ribbon R wound thereon.
The leading edge of the ink ribbon R is wound around the base 42 a of the winding core 42. Each of the delivery core 40 and each of the rectangular grooves 40e and 42e of the winding core 42,
Each engagement projection 32 of the second and fourth support walls 32k, 32q
When the ribbon cassette 10 is not used, for example, when the ribbon cassette 10 is transported, the ink ribbon R does not sag and rub against the cassette case 11 so that the quality is not deteriorated. can do.

Next, the assembly of the ribbon cassette 10 will be described. As shown in FIG. 4, first, the lower case 32 is prepared, and the core 40 is fed into the first semi-cylindrical portion 32a.
Insert At this time, the core 4 is fed to the first support wall 32j of the lower case 32 while the tip of the small-diameter portion 40b of the core 40 is brought into elastic contact with the mold piece 32m shown in FIG.
The small diameter portion 40b of the core 40 is brought into contact with the second support wall 32k and the opening portion 20 of the side surface portion 12b, and the large diameter portion 40c of the core 40 is brought into contact with the small diameter portion 40b. As a result, as shown in FIG. 11, the engagement protrusion 32n of the lower case 32 meshes with the rectangular groove 40e of the delivery core 40, and the rotation of the delivery core 40 is restricted. At the same time, the meshing is released by pressing the delivery core 40 in the direction of the rotation axis, and the delivery core 40 is smoothly supported while being axially supported by the first support wall 32j and the second support wall 32k. It is designed to rotate.

Next, while the leading edge of the ink ribbon R wound around the delivery core 40 is brought into sliding contact with the shaft 19, the delivery core 40 is stored while being pulled to the second semi-cylindrical portion 32b. The first upper case 33 is put on the lower case 32, and the respective engaging claws 33d and 33e are fitted and fixed in holes (not shown) of the lower case 32 (see FIG. 14).

Next, a winding core 42 is prepared. The delivery core 40 around which the ink ribbon R is wound is pressed in the direction of the rotation axis by the delivery core 40 to urge the mold piece 32m in order to wind the leading edge of the ink ribbon R around the take-up core 42. Then, the engagement protrusion 32n of the lower case 32 and the delivery core 40
Is disengaged from the rectangular groove 40e, and the ink ribbon R is further pulled toward the winding core 42. Ink ribbon R
Along the winding reference line of the winding core 42 (not shown), the leading edge thereof is attached with an adhesive (not shown), wound several times, and wound and fixed (see FIG. 13).

Next, the second semi-cylindrical portion 32 of the lower case 32
c, the tip of the small-diameter portion 42b of the take-up core 42 is elastically contacted with the mold piece 32s, and the small-diameter portion 42b of the take-up core 42 is attached to the third support wall 32p by the fourth support wall 32q and the side portion 13b. The large diameter portions 42c of the winding core 42 are respectively brought into contact with the openings 28 of the winding core 42. As a result, lower case 3
The second engaging projection 32t meshes with the rectangular groove 42e of the winding core 42, and the rotation of the winding core 42 is restricted. At the same time, by pressing the take-up core 42 in the direction of the rotation axis, the take-up core 42 is supported by the third support wall 32p and the fourth support wall 32q to rotate smoothly. Thereafter, as shown in FIG.
The second upper case 34 is put on the lower case 32 in which the zero and first upper cases 33 and the take-up core 42 are assembled and mounted, and is securely mounted and fixed via the engagement claws 34d and 34c. To complete.

Next, a schematic structure of a line printer 50 which is a mounting portion for mounting the ribbon cassette 10 is shown in FIG.
It will be described based on. The line printer 50 includes a main body 50.
a cassette accommodating section 51 for accommodating the ribbon cassette 10 in the main body 50a; a printing mechanism section 52;
And 3. The external shape of the cassette storage portion 51 is a storage shape conforming to the shape of the cassette case 11 of the ribbon cassette 10. When the ribbon cassette 10 is stored, the engagement protrusions 32n and 32t and the rectangular grooves 40e,
The engagement with 42e is released, and the delivery core 40 and the take-up core 42 can be rotated by a rotation drive mechanism (not shown). As shown in FIG. 12, a detection switch 100 including an operation unit 100 a is provided in the cassette storage unit 51, and the operation unit 100 a is disposed on the side surface 12 b of the cassette case 11. The detection switch is turned ON and OFF by contacting or non-contacting with the flat concave portions of the notches 22a, 22b and 22c.
F, the type of the attached ribbon cassette 10 is identified. The paper supply unit 53 includes a plurality of recording papers 5.
4 is provided. Above the paper tray 55, a paper feed roller 56 rotatably mounted on the main body 50a is provided. This paper feed roller 56
However, the recording paper 54 stored in the paper tray 55 is rotated while being pressed against the uppermost portion thereof, and the recording paper 54 is conveyed one by one in the direction of arrow B shown in the figure.

The printing mechanism 52 is provided with a rotatable cylindrical roller-type platen 58.
0 is provided movably in the arrow C direction. The thermal head 60 includes a plurality of heating elements, and the heating elements are arranged so as to be substantially the same size as the width of the ink ribbon R. The printing mechanism 52 is provided with a paper feed roller 62 that is rotatable in proximity to the platen 58 and a pressure roller 64 that is rotatable while being pressed against the paper feed roller 62. The main body 50a is provided between the paper feed roller 62 and the pressure contact roller 64 and the paper feed roller 56 so as to be swingably provided with an arcuate guide piece 66 for guiding the transport direction of the transported recording paper 54. ing.

The operation of mounting the ribbon cassette 10 on such a line printer 50 and performing printing will be described.
First, the ribbon cassette 10 provided with the ink ribbon R of a desired color is inserted into the cassette accommodating portion 51. Next, desired print information is selected from a plurality of print information, and after the selection, the front of the top of the recording paper 54 stored in the paper tray 55 (right side in FIG. In the pressed state, the paper feed roller 56 is driven to rotate. By rotating the paper feed roller 56 to convey the recording paper 54 in the paper conveyance direction B, the paper feed roller 62 and the paper feed roller 62
The recording paper 54 moves while being pressed downward by the guide piece 66 between the pressure contact rollers 64 that press against the recording paper 54. continue,
While the recording paper 54 is pressed and held between the paper feed roller 62 and the pressure contact roller 64, the paper feed roller 62 is rotated in the clockwise direction in the figure to rotate the recording paper 54 between the platen 58 and the thermal head 60 in the separated state. Convey between.

Then, the rotation of the paper feed roller 62 and the paper feed roller 56 is stopped in a state where the printing start position of the recording paper 54 is aligned with the portion of the thermal head 60 where the heating elements are formed. Between the thermal head 60 and the recording paper 54, an ink ribbon R coated with ink of a desired color from the ribbon cassette 10 is disposed so as to be partially exposed in the hole 15. Then, the thermal head 60 is moved to the platen 5
8 (shown in the direction of arrow C), and put the ink ribbon R and the recording paper 54 on the platen 5
8, the heating elements of the thermal head 60 are selectively heated according to the above-described desired print information, and the ink of the ink ribbon R is thermally transferred to the recording paper 54 to perform desired print recording.

As shown in FIG. 15, the ink ribbon R used for print recording runs as follows. First, the ink ribbon R sent out from the delivery core 40 of the ribbon cassette 10 in the horizontal direction is bent downward (about 90 degrees) below the main body 50a of the line printer 50 by the shaft 19, and is led out from the delivery port 21. Is done. further,
The derived ink ribbon R passes through the outlet 21 and
By being drawn out along the wall 18 of the cassette case 11 and slidingly contacting the edge 18 a of the wall 18, it is bent toward the winding core 42 at an obtuse angle, and
5 (see FIG. 1). The running path of the ink ribbon R is formed in a crank shape by the shaft (first support portion) 19 and the edge portion (second support portion) 18 a of the wall portion 18, and is constant until the ink ribbon R reaches the thermal head 60. Tension is added.

After print recording is performed using ink of a desired color, the ink ribbon R is peeled off the recording paper 54, and the take-up core 42 of the ribbon cassette 10 is rotationally driven by a driving mechanism (not shown). The ink ribbon R from which the ink has been peeled in the printing shape passes through the winding opening 27 to the winding core 42 in the second storage portion 13 of the cassette case 11 while sequentially slidingly contacting the flange portion 26 and the edge portion 13c. It is wound.

Next, as shown in FIG. 16, the recording paper 54 on which the print recording has been performed is sandwiched between the paper feed roller 62 and the pressure roller 64, and the rotation of the paper feed roller 62 causes the both sides of the recording paper 54 to move. While the edge slides on the guide projection 24 of the second upper case 34 of the ribbon cassette 10, the edge advances in the direction of arrow F shown in the figure. Both edges of the recording paper 54 are margins L other than the area on which the recording is performed, and the area of the recording paper 54 on which the recording is recorded does not directly touch the cassette case 11 of the ribbon cassette 10. L is slidably guided and transported downward. Therefore, the recording paper 54
Is transported without rubbing the print-recorded area surface while keeping the print-recorded state in a better state. Further, the ink ribbon R is moved to the edge 18 a of the second storage section 13 by the pair of guide projections 24 provided at a position where the ink ribbon R wound around the winding core 42 and the recording paper 54 are separated.
Then, the recording paper 54 is separated into the pair of guide projections 24,24.

Next, after printing and recording, the platen 58 returns to the original separated position with respect to the thermal head 60. The recording paper 54 is conveyed while elastically contacting the rotating pressure roller 64 by rotating the paper feed roller 62 in the counterclockwise direction in the drawing, and slides on the upper surface of the guide piece 66 at the position where the leading end is lowered. While being in contact, it is discharged in the direction of arrow H in FIG. When discharging the recording paper 54, the paper feed roller 62 is rotated in the reverse direction, and the recording paper 54 is discharged in the illustrated G direction. At this time, since only the margin L of the recording paper 54 can be ejected while sliding on the guide projections 24, 24, the surface of the recording paper 54 on which the print recording is performed does not rub. In the case of color printing, the paper feed roller 62 is rotated clockwise as shown in FIG.
Is transported. The ink ribbon R and the recording paper 54 are pressed against the platen 58 by the thermal head 60 in a state where the ink ribbon R is wound around the take-up core 42 and the inks of different colors are arranged between the thermal head 60 and the platen 58. The print recording is performed on the recording paper 54 with the color ink. In this manner, the recording paper 54 on which the predetermined color ink has been printed and recorded in several times is also slid above the guide piece 66 by rotating the paper feed roller 62 in the counterclockwise direction shown in FIG. While being discharged outside the line printer 50.

The ribbon cassette 10 inserted into the line printer 50 in this way can be made smaller and thinner by reducing the unnecessary space by making the cassette case 11 rectangular. When the ribbon cassette 10 is mounted on the line printer 50, which is the mounting portion, even if the conveyance path of the recording paper 54 is narrowed, the print-recorded area surface is directly transferred to the cassette case 11 by the pair of guide projections 24. Since there is no touch, the line printer 50
The entire device can also be reduced in size and thickness. The guide projection 24 is provided near the innermost peripheral edge 18 a of the peripheral wall of the second storage portion 13, and the ink ribbon R wound around the winding core 42 while slidingly contacting the edge 18 a.
The ink ribbon R can be reliably separated from the recording paper 54 by being provided at a position where the recording paper 54 and the recording paper 54 are separated.

[0032]

According to the ribbon cassette of the present invention described above, a first storage portion, a second storage portion arranged at a predetermined distance from the first storage portion, and A cassette case having a connecting member that connects side end portions of the first and second storage units, a rotatable delivery core provided in the first storage unit, and a rotation provided in the second storage unit; A second take-up core and a wide ink ribbon wound around the delivery core and partially windable around the take-up core.
Guide projections are provided on the outer periphery of both sides of the peripheral wall of the storage section so that both ends of the recording paper printed by the ink ribbon are brought into sliding contact with the guide projections to convey the recording paper. By doing so, the print recording surface of the recording paper does not come into contact with the ribbon-cut cassette case, so that the print recording surface does not rub and can be transported while maintaining stable recording quality.

The peripheral wall of the second storage portion has an ink ribbon inlet, and the guide projection is provided near the inlet, and is inserted from the inlet and wound around the winding core. By separating the recording paper from the ink ribbon by simply transporting the printed recording paper to the guide protrusion on the transport direction side by reliably separating the recording paper from the ink ribbon, Ink ribbon second
Can be stored in the storage section from the introduction port.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a ribbon cassette according to an embodiment of the present invention.

FIG. 2 is a side view of the ribbon cassette according to the embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of the ribbon cassette according to one embodiment of the present invention.

FIG. 4 is an exploded perspective view of the ribbon cassette according to one embodiment of the present invention.

FIG. 5 is a rear view of the lower case of the ribbon cassette according to the embodiment of the present invention.

6 is a cross-sectional view taken along the dashed line 6-6 in FIG.

FIG. 7 is a cross-sectional view taken along a dashed line 7-7 in FIG.

FIG. 8 is an enlarged perspective view of a main part of a lower case of the ribbon cassette according to one embodiment of the present invention.

FIG. 9 is an enlarged perspective view of a main part of a lower case of the ribbon cassette according to the embodiment of the present invention.

FIG. 10 is an enlarged perspective view of a main part of a ribbon core of the ribbon cassette according to one embodiment of the present invention.

FIG. 11 is an enlarged sectional view of a main part for explaining a relationship between a ribbon cassette case and a ribbon core according to the embodiment of the present invention.

FIG. 12 is an enlarged perspective view of a main part illustrating a relationship between an upper case and a mounted portion of the ribbon cassette according to one embodiment of the present invention.

FIG. 13 is a perspective view showing a state where the upper case is removed from the ribbon cassette according to one embodiment of the present invention.

FIG. 14 is a sectional view of a ribbon core portion of the ribbon cassette according to one embodiment of the present invention.

FIG. 15 is an explanatory diagram showing an operation state when the ribbon cassette according to the embodiment of the present invention is mounted on a mounting portion.

FIG. 16 is an explanatory diagram showing an operation state of conveying a recording sheet when the ribbon cassette according to the embodiment of the present invention is mounted on the mounting portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Cassette case 12 1st accommodating part 12a Peripheral wall part 13 2nd accommodating part 13a Peripheral wall part 14 Connecting member 24 Guide protrusion 27 Winding port 40 Sending core 42 Winding core 54 Recording paper R Ink ribbon L Margin part

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C068 AA02 AA06 AA15 EE51 EE60 EE98 FF01 FF06 FF14 HH01 HH09 HH14 HH20 MM03 MM17

Claims (2)

[Claims] 1. A first storage section, a second storage section disposed at a predetermined distance from the first storage section, and a side end of the first and second storage sections. A cassette case having a connecting member, a rotatable delivery core provided in the first storage portion, a rotatable take-up core provided in the second storage portion, and a A wide ink ribbon that is wound and partially wound around the winding core, and guide projections are provided on the outer periphery of both end portions of the peripheral wall portion of the second storage portion so as to protrude; A ribbon cassette, wherein both ends of a recording sheet printed by an ink ribbon are brought into sliding contact with the guide projections to convey the recording sheet. 2. A peripheral wall portion of the second storage portion has a winding port for introducing the ink ribbon, is provided near the winding port, is inserted from the winding port, and is wound around the winding core. 2. The ribbon cassette according to claim 1, wherein the ink ribbon and the recording paper are separated.