JP2556346B2 - Ink ribbon cassette - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an ink ribbon cassette detachably attached to a recording device having a recording head, such as a printer or a facsimile.

[Conventional technology]

This type of ink ribbon cassette is generally used by detachably mounted on a carriage that has a recording head and moves left and right along a sheet on a platen. The ribbon is wound on a take-up reel along a transport path that passes through the front surface of the recording head.

The take-up reel is connected to a ribbon drive shaft provided on the carriage when the cassette is mounted, and is controlled so as to rotate in response to a recording operation and convey an ink ribbon between a recording head and a sheet (recording medium).

[Problems to be solved by the invention]

By the way, in the ink ribbon cassette, it is important to convey the ink ribbon accurately without slack, and for that purpose, it is required to wind the ink ribbon with proper and constant tension.

However, in the conventional ink ribbon cassette, since the friction pad is simply pressed by the spring force as a means for applying the ribbon tension, the friction resistance in the carrying (winding) direction and the returning direction is the same, and When an impact is applied by an up / down operation of the head, the ink ribbon easily advances in the returning direction, causing slack in the ribbon on the supply side, and sometimes the ink ribbon comes off the transport path.

Further, since the friction pad is generally supported by a relatively long leaf spring, there is a problem that a considerable space is required to provide the tension applying means.

[Means for solving problems]

The present invention has been made in view of the above prior art,
An object of the present invention is to eliminate problems such as the ink ribbon being inadvertently pulled out of the cassette during non-recording, and to prevent the occurrence of stains due to slippage between the ink ribbon and the recording sheet caused by tension. The base film can be thinned to increase the length of the ink ribbon accommodated in the cassette, and the ink ribbon can be prevented from being inadvertently returned so that wrinkles caused by the looseness of the ink ribbon can be prevented. It is an object of the present invention to provide an ink ribbon cassette that can prevent cutting of the ink ribbon due to contact with other mechanism parts or entanglement.

The present invention relates to an ink ribbon cassette mounted in a recording apparatus for transferring ink of an ink ribbon to a recording sheet using a thermal head, an ink ribbon transport path for transporting the ink ribbon from a supply side to a winding side, and the ink A free end for arranging a friction member for pressing the ribbon, a support end located on the other end side of the free end, and the free end between the free end and the support end And an intermediate portion that bends so as to face the supporting end portion, and the supporting end portion is provided on the ink ribbon cassette so that the extension direction of the free end portion is along the winding direction of the ink ribbon. A mounted cantilever spring member, a pressing surface that is disposed so as to face the friction member, and that holds the ink ribbon together with the friction member, and an increment of the cantilever spring member. A guide member that is arranged between the free end portion and the support end portion on the downstream side in the winding direction, and that forms the ink ribbon transport path so as to approach the support end portion, The pressing force with which the friction member presses the ink ribbon against the pressing surface is greater when the ink ribbon is moved from the winding side to the supply side than when the ink ribbon is conveyed from the supply side to the winding side. The above-mentioned object is achieved by adopting a larger structure.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is an external perspective view of a word processor provided with a recording device embodying the present invention.

In FIG. 2, reference numeral 1 denotes a keyboard serving as an input operation unit, which is provided with color keys and function keys to be described later. Reference numeral 2 denotes a CRT (or LCD) of a display device, 3 denotes an FDD of a storage device, and 4 denotes a recording sheet.

FIG. 3 shows a recording section of a recording apparatus in which the ink ribbon cassette according to the present invention is mounted.

3, the recording sheet 4 is pressed against the rubber portion of the sheet feed roller 6 by a pinch roller 6b (FIG. 6) while being backed up by the platen 5. A gear 7 is attached to the shaft 6a of the sheet feeding roller 6 and is connected to the sheet feeding motor M1 via a reduction gear 7a,
The rotation of the sheet feed motor M1 rotates the sheet feed roller 6 to convey the recording sheet 4.

Therefore, when a thermal head 18 described later contacts the recording sheet 4 to perform recording, the platen 5
Maintain its position.

 Next, reciprocation of the carriage 14 will be described.

A shaft 12 is fixed on the front side of the platen 5 in parallel, and a rack 13 is fixed on the opposite side of the carriage 14. A carriage 14 (FIGS. 1 and 6) is provided on the guide surface of the shaft 12 and the upper surface of the rack 13. Are movably guided and supported in the direction of arrow B. That is, the carriage 14 can reciprocate in a direction perpendicular to the conveyance path A of the recording sheet 4.

A part of the belt 11 is fixed to the carriage 14,
It is stretched by a pulley gear 9 and a pulley 10. The pulley gear 9 is connected to the carriage motor M2 via reduction gears 8a and 8b. Then, the rotation of the carriage motor M2 rotates the pulley gear and the pulley, whereby the belt 11 is driven, and the carriage 14 reciprocates (along arrow B) along the shaft 12.

Further, the carriage 14 has a head boulder 19 (first
) Is rotatably guided and supported around the head holder shaft 19b. A thermal head 18 is attached to the head holder 19, and the head holder 19 also serves as a heat sink.

Further, the carriage 14 is provided with a carriage table 35 for mounting an ink sheet cassette (ink ribbon cassette) 40 (FIGS. 7 and 13) in a two-stage stack. The carriage table 35 is provided with a color detecting means (color sensor) S3 for identifying the color of the multi-color ribbon 50 (Fig. 15), and the carriage 14 is provided with or without the ink ribbon cassette 40, the type and the ink. Ribbon sensor S2 for detecting the ribbon 49 end (3rd
Figure) is provided.

Next, place the ink ribbon cassette on the carriage table 35.
A case where the 40 is detachably loaded will be described.

The carriage table 35 can be loaded with ink ribbon cassettes 40 in two upper and lower stages. On the upper surface of the carriage table 35, pins 35a, 35b and hooks 35c, 35d, 35e are provided.

First, when the ink ribbon cassette 40 is loaded in the lower stage, the ink ribbon cassette 40 (see FIGS.
(Figure) Opening 41a, 4 provided in the upper and lower cases
1b, 42i, and 42j are fitted into the pins 35a and 35b, and the hooks 35c are elastically engaged with the locking portions 42k of the lower case, whereby the ink ribbon cassette 40 is removably mounted on the carriage table 35. can do. Similarly, when the ink ribbon cassette 40 is loaded in the upper stage,
The openings 41a, 41b, 42i, and 42j are fitted into the pins 35a and 35b, and the hooks 35d and 35e are elastically engaged with the engagement portions 42l and 42m of the lower case, thereby lowering the ink ribbon cassette 40.
It is loaded onto the carriage table 35 via.

In this way, a plurality (two stages) of ink sheet (including ink ribbon) mounting portions are configured.

 Next, the configuration on the carriage 14 will be described.

 FIG. 1 is an overall configuration diagram of the carriage 14.

In FIG. 1, a head motor M3 is mounted on a carriage 14, and the driving force of the head motor M3 is a reduction gear.
It is transmitted via 15a and 15b to rotate the head cam 16 and the ribbon cam 17.

The head cam 16 is a cam for head up and down (separation and pressing of the recording head 18 with respect to the platen 5) described later, and a cam surface 16a on the upper surface of the head cam 16 whose height changes in the axial direction of the rotation axis of the head cam 16. Is provided. Further, the ribbon cam 17 is a cam for turning on / off the ribbon winding and a set-up / down (ink sheet switching means) which will be described later, and an upper surface of the ribbon cam 17 has an axial direction of a rotating shaft of the ribbon cam 17 as shown in FIG. A cam surface 17a for changing the height is provided on the upper surface of the ribbon cam 17, and the upper surface of the cam surface 17a is for winding the ribbon, the radius of which changes at right angles to the axis of the rotation axis of the ribbon cam 17 about the rotation axis. Is provided with a cam surface 17.

FIG. 4 is a cam chart of the head cam 16 and the ribbon cam 17.

In FIG. 4, six combinations of head up / down, ribbon take-up, and set-up / down operations are executed by the positions of the head cam 16 and the ribbon cam 17 which are rotated by driving the head motor M3 (FIG. 3). Can be.

Here, the head cam 16 and the ribbon cam 17 are moved by a stopper (not shown) provided on the carriage 14 to the fourth position.
The rotation is restricted within the range of the cam chart in the figure.

In FIG. 4, a head cam for head up / down
When the 16 cam surfaces 16a are low cam surfaces (P2 to P5), head up (separation) described later occurs, and the high cam surfaces (P1,
In the state of P6), head down (pressing or pressure contact) described later is performed.

When the radius of the cam surface of the ribbon winding cam surface 17b of the ribbon cam 17 is small (P1 to P2, P5 to P6), a ribbon can be wound as described later, and the radius of the cam surface is large (P3). At the time of P4), a ribbon winding release state described later is set.

Furthermore, when the cam set-down cam surface 17a of the ribbon cam 17 is in the state of the low cam surface (P1 to P3), it is in the state of the cassette down (using the upper cassette) described later, and the high cam surface (P4 to P6) In this state, the camera is in a set-up state (using the lower cassette) described later.

Next, the power set-down mechanism (ink sheet switching means) will be described.

FIG. 5 is a plan view of the set-up mechanism, FIG. 6 is a side view of the cassette-down state, and FIG. 7 is a side view of the set-up state.

In FIGS. 5, 6, and 7, the cassette shift lever A29 is fixed to a cassette shift shaft 29a rotatably guided and supported by the carriage 14, and the protrusion 29b of the cassette shift lever A29 and the carriage A cassette shift spring 30 is mounted between the projection 14 and the projection (not shown).

The tip portion 29c of the cassette shift lever A29 is urged in the direction of arrow C2 by the spring force of the cassette shift spring 30 and is therefore pressed against the cam surface 17a of the ribbon cam 17 (Fig. 6).

The cassette shift lever A29 is connected to the cassette shift shaft 2
It is connected to the cassette shift lever B31 via 9a, and 31b provided on the cassette shift lever B31.
A cassette shift lever C32 is rotatably supported on the.

Further, a boss 31a is provided at one end of the cassette shift lever B31.
However, the bosses 32a are fixed to the tip of the cassette shift lever C32, and the openings 35f and 35g of the carriage table 35 are fixed.
The bosses 31a and 32a are inserted into the cassette shift lever C32, and a boss 32b is provided at the other end of the cassette shift lever C32.
The boss 32b is inserted into the 14 opening 14b. Thus, the carriage table 35 is supported substantially horizontally.

Here, when the height of the cam surface 17a is increased and the cassette shift lever A29 is rotated clockwise (direction of arrow C1) (FIG. 6), the cassette shift lever B31 also moves clockwise (arrow C).
Rotate in one direction) (Fig. 6).

From the above description, the rotation center of the cassette shift lever B31, that is, the cassette shift shaft 29a and the boss 32b of the cassette shift lever C32 are restricted in height by the carriage 14, and the boss 31a of the cassette shift lever B31 is The opening 35f and the boss 32b of the cassette shift lever C32 move through the opening 14b of the carriage 14, respectively. That is, the carriage table 35 moves in the vertical direction (arrows E1 and E2 directions) (FIG. 6) by converting the rotary motion into the linear motion by the pantograph mechanism.

The carriage table 35 is provided with a boss 33, which is a carriage cover attached to the carriage 14.
34, the carriage table 3
The range of vertical movement (arrows E1 and E2 directions) 5 (FIG. 6) is restricted. That is, the height of the carriage table 35 when the carriage table 35 is up and when it is down is accurately determined by the opening 34a.

Next, the operation of the set-up down in the above configuration, that is, the switching operation of the ink sheet (including the ink ribbon) will be described.

FIG. 5 and FIG. 6 show the cassette down state (using the upper cassette).

In this state, the ribbon cam 17 is shown in the chart of FIG.
In the state of P1 to P3, the tip portion 29c of the cassette shift lever A29 is pressed against the low height surface of the cam surface 17a of the ribbon cam 17 by the urging force of the cassette shift spring 30, and the carriage table 35 is in the down position. is there.

From this state, move the ribbon cam 17 clockwise (arrow D1 direction).
When rotated to (Fig. 5), the cam surface 17a of the ribbon cam 17
The contact point between the tip of the cassette shift lever A29 and the tip end 29c of the cassette shift lever A29 increases in height perpendicular to the cam surface.

Accordingly, the cassette shift lever A29 overcomes the urging force of the cassette shift spring 30 and rotates clockwise (direction of arrow C1) and (FIG. 6).

As described above, the rotation of the cassette shift lever A29 causes the carriage table 35 to move in the up direction (arrow E1 direction).
When the height of the cam surface 17a reaches the positions P4 to P6 (Fig. 4) after moving to (Fig. 6), the lower cassette is in use (Fig. 7).
become.

Next, the ribbon winding mechanism, that is, the ink sheet feeding means will be described.

FIG. 8 is a plan view of the ribbon winding state, and FIG. 9 is a plan view of the ribbon winding release state.

8 and 9, the carriage 14 is provided with a take-up shaft 24, and a take-up lever 25 is rotatably supported around the take-up shaft 24.
A winding clutch 23 is rotatably supported on the upper part of the.

Further, a winding reduction gear 25C is rotatably supported by the winding lever 25, and a gear portion (not shown) of the winding clutch 23 functions as a sun gear, and the winding reduction gear 25C functions as a planetary gear. Are engaged.

Further, a take-up gear 27 and a take-up intermediate gear 26 meshing with the take-up gear 27 are rotatably guided and supported by the carriage 14, and the take-up gear 27 meshes with the rack 13.

Further, a take-up lever pressing spring 28 is provided between a spring hook 25a of the take-up lever 25 and a spring hook (not shown) of the carriage 14, and the take-up lever 25 is moved in the direction of arrow F1 (the (Fig. 8).

Further, the take-up clutch 23 is provided with a hub receiving portion 23a, and the take-up core 44 (the thirteenth
(Fig. 14, Fig. 14).

Further, a friction clutch (not shown) is provided between the hub receiving portion 23a of the winding clutch 23 and the gear portion (not shown), and the rotation of the gear portion is transmitted to the hub receiving portion 23a.

Next, the operation of the ribbon winding, that is, the operation of the ink sheet feeding means will be described.

When the ribbon can be wound as shown in FIG.
Is in the state of P1 to P2 and P5 to P6 in the cam chart of FIG. 4, and the take-up lever 25 is urged clockwise (in the direction of arrow F1) by the take-up lever press-contact spring 28.
The winding reduction gear 25a attached to the winding lever 25 is urged by the winding intermediate gear 26 and meshes therewith.

In this state, when the carriage 14 is moved in the recording direction (direction of arrow B1 in FIG. 3), the winding gear 27 that meshes with the rack 13 rotates.

The rotational force of the winding gear 27 is transmitted to the winding clutch 23 via the winding intermediate gear 26 and the winding reduction gear 25a,
With the rotation of the hub receiving portion 23a of the winding clutch 23, the winding core 44 in the ink ribbon cassette 40 fitted with the hub receiving portion 23a rotates, and the ink ribbon 49 is wound.

When the ribbon cam 17 is rotated clockwise or counterclockwise (the direction of arrow D1 or D2 in FIG. 8) from this state, a cam surface 17b provided on the ribbon cam 17 and a boss provided on one end of the take-up lever 25 are provided. When the ribbon cam 17 rotates and the ribbon cam 17 further rotates, the radius of the cam surface 17b at the contact point between the cam surface 17b and the boss 25b of the winding lever 25 increases according to the cam chart of FIG.

As a result, the take-up lever 25 rotates counterclockwise (direction of arrow F2 in FIG. 8) against the urging force of the take-up lever pressure contact spring 28, and the cam surface 17b moves to P3 of the cam chart of FIG.
When it reaches the position P4, the take-up reduction gear 25C guided and supported by the take-up lever 25 separates from the take-up intermediate gear 26.

In this state, the carriage 14 is moved in the recording direction (arrow B1 in FIG. 3).
Direction), the take-up gear 27 that meshes with the rack 13
Rotates, and the rotational force is transmitted to the winding intermediate gear 26. However, since the winding intermediate gear 26 and the winding reduction gear 25C are separated from each other as described above, the rotational force of the winding gear 27 is not transmitted to the winding reduction gear 25c.

Therefore, the gear portion (not shown) of the winding clutch 23 that meshes with the winding reduction gear 25c also does not rotate. That is, ribbon winding is not performed in the state of P3 to P4 in the cam chart of FIG.

Next, the up / down mechanism of the thermal head (recording head) 18 will be described.

FIG. 10 is a plan view of the up-down mechanism, FIG. 11 is a side view of the head-up state, and FIG. 12 is a side view of the head-down state.

In FIGS. 10 to 12, the head up / down lever
The head 22 is rotatably provided around a head holder shaft 19b provided on the carriage 14, and a head spring 21 is charged with a spring force between the protruding portions 22b and 22c of the head up / down lever 22. It is installed in the state that it was.

A roller 22 is attached to one end of the head up / down lever 22.
a is rotatably guided and supported. Further, a head return spring 20 is provided between the spring hook 19a of the head holder 19 and the spring hook 14a of the carriage 14, and the head holder 19 is attached in a direction away from the platen 5 (the direction of arrow I2 in FIG. 11). It is being rushed.

The biasing force of the head return spring 20 is applied to the head holder 19
From the pressure contact portion 19c of the head spring 21 to the arm portion 21a,
The power is transmitted from the arm 21a to the head up / down lever 22. Therefore, the head up / down lever 22 is moved away from the platen 5 by the head return spring 20 (the
The roller 22a provided on the up / down lever 22 is biased in the direction of arrow I2 in FIG.
Is pressed against.

Therefore, the head 18 rotates in the direction of the platen 5 due to a change in the height increasing direction of the head cam 16.

Next, the operation of pressing or pressing (down) and separating (up) the recording head in the above-described configuration will be described.

In FIGS. 10 and 11, head up (separation)
In the state, the head cam 16 corresponds to P2 to P5 in the cam chart of FIG.
As described above, the head up-down lever 22 is pressed against the head cam 16 by the head return spring 20, and the head 18 is separated from the recording sheet 4 and the platen 5.

From this state, move the head cam 16 clockwise (arrow in FIG. 10).
When rotated in the direction G2) or counterclockwise (direction G1 in FIG. 10), the height in the direction perpendicular to the cam surface at the contact point between the cam 16 and the roller 22a provided on the head up / down lever 22 increases. I do.

As a result, the head up / down lever 22 moves counterclockwise against the urging force of the head return spring 20 (see the arrow in FIG. 11).
Rotate in the H2 direction). This head up down lever 22
Of the head holder 21 from the arm 21a of the head spring 21
The rotation is transmitted to the press-contact portion 19c of FIG. 9 to rotate the head holder 19 in the counterclockwise direction (the direction of the arrow I1 in FIG. 11). Then, the thermal head 18 attached to the head holder 19 is pressed against the platen 5 via the recording sheet 4 and the ink ribbons 49 and 50 (FIG. 11).

That is, at the time of recording by the thermal head 18, the head 18 contacts the recording sheet 4, and the recording sheet 4 is held at that position by the platen 5.

After the thermal head 18 comes into contact with the platen 5, the height of the head cam 16 also increases, and the head up / down lever 22 is further rotated counterclockwise (the direction of arrow H2 in FIG. 11).

That is, the head cam 16 corresponds to the aforementioned cam chart (fourth
(Fig.) When the position of P1 and P6 is reached, the head holder 19
Is regulated by the contact of the thermal head 18 with the platen 5.

Therefore, with the rotation of the head up / down lever 22 in the counterclockwise direction (the direction of arrow H2 in FIG. 11), the head spring 21
Leaves the protrusion 22b of the head up / down lever 22, and the head spring 21 is further charged with spring force.

The spring force of the head spring 21 is the head up / down lever.
Since the protruding portion 22b of 22 and the arm portion 21a of the head spring 21 are separated,
The thermal head 18 is transmitted to the pressure contact portion 19c of the head holder 19, and is pressed against the platen 5 via the recording sheet 4.

Next, the operation method of head up down, ribbon winding, and setup up down will be described.

Using the cam chart in FIG. 4, a description will be given of a state in which the above-described operations of head up / down, ribbon winding on / off, and set-up / down at each position are combined.

In FIG. 4, P1 indicates a head down (pressure contact), a ribbon can be wound, and a cassette down (using an upper cassette).
, Ie, the recording state in the upper ink ribbon cassette.

P2 indicates a head-up (separation), ribbon take-up and cassette down state, that is, a state (position) of winding the ribbon of the upper cassette in a non-recording state.

P3 shows the state of head-up, ribbon rewinding and cassette down, and P4 shows the state of head-up, ribbon rewinding and cassette setup (using the lower cassette).

Further, P5 indicates a head-up state, a state in which the ribbon can be wound up, and a set-up state, that is, a state in which the ribbon of the lower cassette is wound up in a non-recording state.

P6 shows the state of head down, ribbon winding possible and cassette setup, that is, the recording state in the lower cassette.

Therefore, by rotating the head motor M3 (FIG. 1) clockwise or counterclockwise and rotating the head cam 16 and the ribbon cam 17 to any one of the positions P1 to P6, the recording state, the non-recording state, It is possible to independently have six states: ribbon take-up release, ribbon take-up possible, set-up, and cassette down.

The above-described six states are not independently driven, and for example, head up / down and on / off of ribbon winding may be linked, or head up / down, ribbon winding on / off, and set up / down may be linked. Move 3
Each motor can be operated independently.

Next, an ink sheet cassette (ink ribbon cassette)
Will be described with reference to FIG. 13 (plan view) and FIG. 14 (perspective view).

13 and 14, the ink ribbon cassette
40 is formed of an upper case 41 and a lower case 42, and is detachably mounted on the carriage table 35 with the ink ribbon 49 stored in the cassette 40.

The ink ribbon 49 is wound around the supply core 43, passes through a roller 48 rotatably attached to the protruding portions 42a and 42b of the lower case 42, and once is exposed to the outside of the cassette 40 at the opening 42c of the lower case, and then is again After entering the cassette 40 through the case opening 42d, the cassette 4
After being exposed to the outside, it enters the cassette 40 through the lower case opening 42f and is wound up by the winding core 44.

When the cassette 40 is loaded at a predetermined position on the carriage table 35, the ink ribbon exposed from the openings 42c and 42d of the cassette 40 facing the head 18 on the main body side.
The ink ribbon 49 can be heated by the thermal head 18 that generates heat according to the recording information. Further, the ink ribbon 49 is pressed by the press contact springs 45 and 46 provided on the lower case 42 so that the protrusions 42g and 42h
Are each urged. The press-contact springs 45, 46
Felts 45a and 46a are attached to the paper, to prevent damage due to pressure contact of the ink ribbon 49.

Further, the tension spring 47 moves the ink ribbon 49 to the arrow K.
(Fig. 13), the slack of the ink ribbon 49 is removed in cooperation with the pressure contact springs 45 and 46.

Further, a part of the ink ribbon 49 is exposed from the opening 42n of the lower case 42, and when the cassette 40 is loaded at a predetermined position of the carriage table 35, the ribbon sensor S2 on the main body side (see FIG. 3). ) Is located at the opening 42n of the cassette 40, and the ribbon sensor S2 detects the ribbon end of the ink ribbon 49. The color sensor S3 (FIG. 3) on the main body faces the position of the ink ribbon 49 exposed from the openings 42e and 42f of the lower case 42.

As is clear from the above specific structure, the recording head 18
An ink ribbon cassette 40 that is detachably attached to a recording apparatus having a recording head 18 is formed in a conveyance path of an ink ribbon 49 that is conveyed from a supply side 43 to a winding side 44.
And a pair of friction means 45 and 46 arranged on both sides of the recess of the transport path to apply a frictional force to the ink ribbon 49, and a pair of friction means 45 and 46. An urging means 47 for applying tension to the ink ribbon 49 formed in the conveyance path is provided, so that the ink ribbon can always be conveyed at a constant appropriate tension without causing the ribbon to be loosened, and the ink ribbon may be damaged. And stable high-quality images can be recorded.

In addition, the multi-stage cassette type recording apparatus capable of multi-color printing selects an ink ribbon cassette to be used from a plurality of mounted ink ribbon cassettes 40, 40, and sets a recording head 18
In the recording apparatus which performs recording on the recording medium 4 by using the ink ribbon cassettes 40 having the above-described configuration, a plurality of the ink ribbon cassettes 40 are stacked in the laminating direction.
Supporting means 35 for movably supporting the ink ribbon cassette 40 by moving the supporting means 35 in the laminating direction.
Drive means 17 for making the ink ribbon 49 of the recording head 18 face the recording position of the recording head 18, and similarly, the ink ribbon 49
A multi-stage type recording apparatus is configured which can always apply proper tension to the recording medium and can obtain high-quality recording.

Further, the ink ribbon cassette 40 is provided with a concave portion for inserting the recording head 18 formed in a transport path of the ink ribbon 49 transported from the supply side 43 to the winding side 44, and is cantilevered in the middle of the transport path. Friction part 46a at its free end
The intermediate portion is bent so that the support end and the free end thereof face each other, and a small tension is applied to the ink ribbon 49 conveyed from the supply side 43 to the take-up side 44, so that the take-up side 44
And a spring member 46 for applying a large tension to the ink ribbon 49 returning from the ink ribbon 49 to the supply side 43, so that the ink ribbon 49 is easily pulled out in the transport direction but hard to return in the reverse direction. The tension applying means 46 having a certain directionality is formed, and the structure is such that the ribbon is hardly loosened.

Further, since the spring member 46 has a U-shape or a V-shape, it can be stored compactly in a small space.

The spring member 46 is provided closer to the winding side (44 side) of the ink ribbon 49 than the concave portion (head 18 insertion portion) of the ribbon transport path, and has a felt member 46a as a friction member. The felt member 46a presses the ink ribbon 49 against the wall surface (protruding portion) 42h, and the ink ribbon 49 is fed to the supply side 4
A guide portion is provided for guiding the ink ribbon 49 so that the ink ribbon 49 is further pressed toward the felt member 46a when the ink ribbon 49 is conveyed from 3 to the winding side 44.

Further, the ink ribbon cassette 40 detachably attached to a recording apparatus that performs recording on the recording medium 4 on the platen 5 by the recording head 18 has housing shapes 41 and 42 in which an upper surface and a lower surface are connected by side walls, The side wall includes a first side wall facing the platen 5 and a second side wall facing the first side wall, and the recording head 18 is inserted into an end of the first side wall. A concave portion is formed, and engaging portions 42k, 42l, and 42m that engage with the locking members 35c, 35d, and 35e of the recording device are formed on the second side wall, and the second side wall approaches the side walls on the top surface and the bottom surface. 41a, 41b, 42 at each end
i, 42j are formed to form a pair of through holes, the positioning members 35a, 35b of the recording device are inserted into the through holes to perform positioning, and the ink ribbon 49 avoids the pair of through holes. It is configured to be guided along the first side wall, and the first side wall can be brought close to the platen 5 and the conveyance path of the ink ribbon 49 can be provided close to the first side wall. It is possible to reduce the size of the ink ribbon cassette 40 and the recording device.

Further, according to the ink ribbon cassette 40, the engaging portions 42k, 42l, 42m provided on the second side wall and the through hole 41 are provided.
Since the ink ribbon cassettes 40a, 41b, 42i, and 42j are attached to the recording apparatus, the ink ribbon cassettes 40 of each stage in the multistage cassette can be shared.

Further, the recording apparatus is of a type in which a plurality of ink ribbons 40, 40 are stacked and mounted in multiple stages, and recording is performed by the recording head 18 on the recording medium 4 on the platen 5 using the ink ribbons 49 in each ink ribbon cassette. A base member 35 for mounting the ink ribbon cassette 40 having the above-described structure in multiple stages,
A pair of positioning members 35a, 35b provided to project from the base member 35 and inserted into a pair of through holes 41a, 41b, 42i, 42j of the ink ribbon cassettes 40, 40;
35, locking members 35c, 35d, 35e for locking the engaging portions 42k, 42l, 42m of the ink ribbon cassettes 40, 40, which are provided so as to project from 35 and have a claw portion at the tip, Ink ribbon cassettes 40, 40 are commonly used for positioning members 35a, 3
The ink ribbon cassette 40 is configured so as to be stacked and supported by the 5b, and has a structure that allows the ink ribbon cassette 40 to be downsized and shared.

Next, about multi-ribbon (multi-color ink sheet)
This will be described with reference to the drawings.

The ribbon shown in FIG. 15 is an example of the multi-ribbon 50,
The multi-ribbon 50 is painted in a multi-color (color A, color B, color C) with a bar code 50a, 50b, 50c.

The multi-ribbon 50 is also housed in the ink ribbon cassette 40 in the same manner as the ink ribbon 49 described above.

As described above, the ribbon cassette 40 is the carriage table.
When the multi-ribbon 50 is loaded at the predetermined position, the color sensor S3 (FIG. 3) on the main body faces the position of the multi-ribbon 50 exposed from the openings 42e and 42f of the lower case 42.

When the multi-ribbon 50 is wound around the winding core 44, the barcodes 50a, 50b, 50c on the multi-ribbon 50 are detected by the color sensor S3, and the color applied next to the barcode is identified. The bar code may be identified by the difference in the number of black lines as shown in FIG. 15 or may be identified by the difference in the width of the black lines. Therefore, it does not depend on the form of the barcode. Also, the desired number of colors may be provided instead of the three colors A, B, and C.

FIG. 16 is a configuration block diagram of the recording apparatus described above.

FIG. 16 shows only the connection relation of each block, and detailed control lines are omitted. The portion surrounded by the dotted line is the CPU unit.

The CPU is a central processing unit, which reads programs and various data from ROM, FDD, etc., which will be described later, performs necessary calculations and judgments, and performs various controls. Further, the CPU may be constituted by a plurality of units.

The ROM is a read-only memory that stores various programs for operating the CPU, character codes, dot patterns (character generator: CG), and various data required for printing. RAM is a read / write memory, C
A working area where the PU temporarily stores the data being processed and the operation results, keyboard 1, external interface IF
It consists of a buffer area for storing various data input from u or floppy disk FDD3, and a text area for storing documents.

The CPU unit has a thermal head driver THD,
It is connected to the printer unit Pu via the motor driver MD and the detection unit SU.

The thermal head driver THD controls the thermal head 18 provided in the aforementioned printer unit Pu under the control of the CPU.
The motor driver MD drives the sheet feed motor M1, the carriage motor M2, the head motor M3, and the like under the control of the CPU.

The detection unit Su transmits information from the home position sensor S1, the ribbon sensor S2, the color sensor S3, and the like provided in the printer unit Pu to the CPU.

The power supply PSu is a drive power supply VH for the thermal head 25, a drive power supply VM for the recording sheet feed motor M1, the carriage motor M2 and the head motor M3, a drive power supply VFDD for the floppy disk FDD3, and a power supply VCC for other logic circuits.
Supply.

Further, the controller GA performs various controls under the control of the CPU, such as transferring print data to the thermal head 18, changing the voltage and current of the drive power supply VH, changing the heat time and duty, and the like.

Further, a keyboard 1 for inputting various data necessary for printing, editing, and the like is connected to the CPU unit via a keyboard connector KBC.

Further, a CRT 2 for displaying data and various information input from the keyboard 1 is connected to the CPU unit via a CRT connector CRTC. Instead of the CRT2, another cover device such as a liquid crystal display can be used.

Further, a floppy disk FDD3 is connected to the CPU unit via an FDD connector FDDC. Note that a hard disk, an external RAM, an external ROM, or the like can be connected instead of the FDD3.

The CPU unit has an RS232C, a Centro interface for controlling the recording device by an external control device and communicating with an external device via an interface connector IFC.
It is also possible to connect an interface such as a modem.

Further, although not shown in FIG. 16, an audio output device such as a buzzer may be provided.

FIG. 17 is a flowchart of a control operation of a power-on process of the recording apparatus embodying the present invention.

Next, a case where the recording apparatus is controlled by a program stored in the ROM or the FDD will be described with reference to FIG.

As described above, this recording apparatus can mount at least two cassettes, and can perform mono-color and multi-color recording by mounting mono-color and multi-color ribbons.

In Fig. 17, first turn on the power to the device (power on).
Is performed, in step 101, the head and the cassette are initialized. The initialization of the head and the cassette is performed by raising the thermal head 18 and shifting the carriage table 35 downward (cassette down) to a position where printing on the upper cassette is possible. The details of the initialization of the head and the cassette will be described later.

Next, in step 102, in order to determine the absolute position of the carriage 14, the carriage motor M2 is driven to shift the carriage 14 in the direction of the home position sensor S1 (FIG. 1).
To stop.

Next, in step 103, sagging of the ribbon is removed in order to prevent the recording sheet 4 from being caught when inserted and to ensure stable print quality. The details of the ribbon hanging will be described later.

Next, in step 104, the carriage 14 is shifted to the standby position.

Finally, in step 105, various parameters are initialized. That is, multi-ribbon set color (MRS) (described later)
Is set to undecided and the multi-ribbon remaining amount (MRL) (described later)
Is set to zero.

FIG. 18 is a flowchart of the initial processing of the head and cassette positions.

In FIG. 18, in step 201, the head motor M3 is driven in the direction of arrow J1 in FIG. 1 to rotate the head cam 16 (FIG. 1) and the ribbon cam 17 (FIG. 1) to strike the stopper.

When the power is turned on, the positions of the cams are undefined, but by driving the head motor M3 by an angle equal to or more than the full rotation angle of the cam, the head cam 16 and the ribbon cam 17 are moved from any cam position to the stopper abutting position in the CW direction. Can be set.

Next, in step 202, the head motor M3 is driven by a predetermined amount in the direction of arrow J2 in FIG. 1, and the head cam 16 and the ribbon cam 17 are set at the cam position P3 in FIG.

Therefore, as described above, the thermal head 18 is separated from the platen 5 (up), and the ribbon is not wound.
Reference numeral 35 indicates a state shifted downward, that is, a state in which the upper cassette can print. FIG. 19 is a flowchart of the ribbon dropping process.

In FIG. 19, first, in step 301, the head motor M
3, the head cam 16 and the ribbon cam 17 are shifted to the cam position P2 in FIG. Next, in step 302, the carriage motor M2 is driven to shift the carriage 14 in the printing direction.

As described above, by shifting the carriage 14 in the printing direction at the cam position P2, the winding clutch 23 rotates, the ink ribbon of the upper cassette is wound, and the sag of the ribbon is removed.

Next, in step 303, the head motor M3 is driven to shift the head cam 16 and the ribbon cam 17 to the cam position P5 in FIG. As a result, the lower cassette is shifted to a printable position and engages with the winding core winding clutch 23 of the lower cassette.

Next, at step 304, the carriage motor M2
To shift the carriage 14 in the printing direction. As described above, the take-up clutch 23 rotates by shifting the carriage 14 in the printing direction at the cam position P5 (FIG. 4), so that the ink ribbon of the lower cassette is taken up.
Ribbon sagging is removed.

Next, in step 305, the head motor M3 is driven to shift the head cam 16 and the ribbon cam 17 to the cam position P3 in FIG. 4, and the process ends.

In the above sequence, steps 303, 304, 301, 30
Even if the processing is performed in the order of 2 and 305, ribbon hanging can be performed. Further, the shift amount of the carriage 14 during ribbon winding is increased when the shift amount is increased, so that the ribbon winding amount increases. Therefore, it is desirable to set the shift amount to a necessary minimum to avoid waste of the ribbon.

 FIG. 20 shows an example of color designation in a text (text).

At the place where you want to specify the color in the text, specify the desired color with the color specification key.

The color designation key may be a dedicated key for each color, a dedicated color key and a numeric key operation, or a function key and an English letter key (for example, C).

The range may be specified or displayed by enclosing the front and back with special characters as shown in FIG. 20, or the range may be overlaid with special characters. In the case of a display device such as a color CRT or LCD, it is most effective to color-code.

In the case of a single-color CRT or a single-color LCD, it is difficult to distinguish the color-designated place. Therefore, it is possible to facilitate the discrimination by using a configuration in which the color-designated part blinks or the brightness changes by key operation or the like.

FIG. 21 shows an example of color designation in the print menu,
Next, a print menu for setting various print parameters will be described with reference to FIG.

As shown in FIG. 21 (a), the color of the cassette is designated according to the color designation of the text in FIG.

As shown in Fig. 21 (b), when a specification different from the text color specification in Fig. 20 is executed, the different specified parts blink, an error message is displayed, or a buzzer sounds. And warn.

If an attempt is made to execute printing contrary to the warning, the printing is executed by replacing the color specification part in the text with the color specification on the print menu screen.

This allows you to change the color designation of the color designation part in the text, for example, if you want to print a multi-colored sentence in only one color (for example, black and red), or if you want to print a red designated sentence in blue. Without having to do this, it is possible to easily change it by specifying the color in the print menu.

If it is desired to print in one color, for example, only black, ignoring the color specification, it is possible to specify the same color for both cassettes, such as specifying the upper and lower black colors in the print menu. Further, a method of designating black only in the upper stage without designating the lower stage can be considered.

Here, the color designation in the print menu on the display is shown, but the input means may be specified anywhere other than the text, or in any place such as a dedicated key on the keyboard, a dedicated switch or a key operation instead of the display. May be specified. That is, by specifying the color of the cassette other than in the text, the desired color can be printed.

FIG. 22 is a flowchart of a print sequence. Next, a case where the text created in FIG. 20 is printed in accordance with the print menu specified in FIG.

In FIG. 22, first, in step 401, it is determined whether the unprinted color designated by the print menu is a single color or a multi-color (multi-color).

In the case of a single color, or when both a single color and a multi-color (multi) exist, the process proceeds to step 402, and in the case of a multi-color, the process proceeds to step 405.

In step 402, the cassette is shifted to the designated stage. That is, in the case of the upper ribbon printing, the head motor M3 is driven to shift to the cam position P3 in FIG. 4, and in the case of the lower printing, shifts to the cam position P4 in FIG. Next, in step 403, the carriage motor M2 is driven to move the carriage 14 to the print designated position, and the head motor M3 is driven to shift the head cam 16 and the ribbon cam 17 to the print position. That is, the head cam 16 and the ribbon cam
17 shifts to the cam position P1 in FIG. 4 for upper ribbon printing, shifts to the cam position P6 in FIG. 4 for lower ribbon printing, and moves the thermal head 18 via the ink ribbon and the recording sheet 4 to the platen. 5 is pressed. In this state, while moving the carriage 14, the heating resistor of the thermal head 18 is selectively heated by the thermal head driver THD according to the printing (recording) information, and the heat-melting ink applied to the ink ribbon is removed. Melt and record sheet 4
To the specified area, and take up the ink ribbon to print the specified area.

Details of the error detection in step 403 will be described later.

After printing in the designated range in step 403, the carriage 14 is stopped, the thermal head 18 is raised, and the ribbon winding is turned off.

Step 405 determines that the color is multicolor.
In step 405, the cassette is shifted to the stage designated as multi-color in step 405.

Next, in step 406, it is determined whether or not there is a multi-ribbon set color (MRS) currently set among the unprinted colors.

If there is a multi-ribbon set color, proceed to step 407,
If not, proceed to step 408.

For example, when MRS is A color, it is determined whether A color is unprinted. Immediately after the power is turned on, the cueing of the multi-color ribbon is not performed, and the multi-ribbon set color (MRS) is set to undetermined in the process of step 105 of the power-on process of FIG. Go to.

When the print length in the text is shorter than the remaining amount of the multi-ribbon in step 407, the process proceeds to step 413 to perform printing.

However, if it is determined in step 407 that the remaining amount of the ribbon is small, and if printing is performed, the predetermined area of the multi-ribbon in FIG. 15 is exceeded, the process proceeds to step 408.

Next, in step 408, it is determined whether or not there is a color next to the currently set multi-ribbon set color (MRS) among the unprinted colors. For example, when the MRS is the color A, it is determined whether the color B is an unprinted color. Step
If the determination result in 408 is YES, the process proceeds to step 409, and NO
If so, proceed to step 410.

In step 409, the next color (for example, B color) ribbon cueing is performed. Details of this ribbon cueing will be described later. After the ribbon cue, change the multi-ribbon set color (MRS) to the next color (for example, B color)
After changing L) to the predetermined amount m, the flow advances to step 413 to print the next color (for example, B color).

The predetermined amount m of the multi-ribbon remaining amount (MRL) is determined by the length 1 of the ink ribbon shown in FIG.

In step 410, it is determined whether there is a next color of the currently set multi-ribbon set color (MRS) among the unprinted colors. For example, when the MRS is the color A, it is determined whether the color C is an unprinted color. If YES, proceed to step 411; if NO, proceed to step 412. In step 411, the ribbon cue of the next color (for example, C color) is performed, the multi-ribbon set color (MRS) is set to the next color (for example, C color), and the remaining amount of the multi-ribbon (MRL) is set.
Is set to a predetermined amount m. Thereafter, the process proceeds to step 413, where printing of successive colors (for example, C color) is performed.

In step 412, the ribbon cue of one after another (for example, A color) is performed, the multi-ribbon set color (MRS) is set to one after another (for example, A color), and the remaining multi-ribbon (MRL) is checked. Set to fixed amount m, and then go to step 413
Then, the process proceeds to (1) and the printing of colors (for example, A color) is performed one after another.

In step 413, the multi-ribbon set color (MRS)
And print the specified range of the same color. That is, the carriage motor M2 is driven to move the carriage 14 to the print designated position, the head motor M3 is driven to lower the thermal head 18, the ink ribbon can be wound, and the carriage
The heating element of the thermal head 18 is selectively heated by the thermal head driver THD in accordance with the print information while moving 14, the heat-meltable ink applied to the ink ribbon is melted, and the ink is transferred to the recording sheet 4. Wind the ribbon and print the specified area.

The error detection in step 413 will be described later.

After printing the specified area, the carriage 14 is stopped, the thermal head 18 is raised, and the ribbon winding is turned off. Then, the consumed ribbon length is subtracted from the multi-ribbon remaining amount (MRL). After that, go to step 404.

In step 404, it is determined whether or not there is a color that has not been printed in the text. If YES (Yes), return to step 401; if NO (No), end. Therefore, the multi-ink ribbon is not wound unnecessarily, and the ribbon can be used efficiently.

Further, by storing the unprinted color and the unprinted area in the text and adding the following processing, the efficiency of ribbon consumption of the multi-color ribbon can be further improved.

That is, when it is determined in step 407 that the length to be printed is larger than the remaining ribbon amount, that is, when NO, the process proceeds directly to step 408 in the flow of FIG. 22, but instead of the remaining ribbon amount. After printing, that is, in synchronization with the printing, the remaining amount of the ribbon is counted down, and the printing is stopped in the state where there is no remaining amount of the ribbon.
It is also possible to proceed to step 8.

At the processing position of step 404, it is determined whether or not there is an unprinted color and whether or not there is an unprinted range. If yes, the process returns to step 401, and if no, the process ends.

Therefore, it is possible to print the multi-ink ribbon without the remaining amount of ribbon, and to reduce the ribbon consumption efficiency.
It can be further improved compared to the processing shown in FIG.

FIG. 23 is a flowchart of the ribbon cueing process,
Next, the cueing for color matching of the multi-ribbon (multicolored ink sheet coated with a dara) will be described with reference to FIG.

That is, an example of a flow when the bar code portions 50a, 50b, and 50c provided on the multi-ribbon 50 in FIG. 15 are detected by the color sensor S3 will be described.

In FIG. 23, first, in step 501, the head motor M3
Is driven to shift to the position where the ribbon winding is on. That is, when the cassette is in the upper set (down), the shift is to the cam position P2 in FIG. 4, and when the cassette is in the lower set (up), the shift is to the cam position P5 in FIG.

Next, at step 502, the ribbon sensor S2 determines whether the ribbon is at the end.

If it is the ribbon end, the flow advances to step 503 to drive the head motor M3 to turn off the ribbon winding. That is, shift to cam position P3 or P4 in FIG.
Proceed to 504 to display the ribbon end error.

If it is not the ribbon end in step 502, step 505
Then, the process proceeds to step S3 and it is determined whether or not the barcode is detected by the color sensor S3.

If the barcode is not detected (NO) in step 505, the process proceeds to step 506, where the carriage motor M2 is driven to move the carriage 14 in the printing (right) direction, and the multi-ink ribbon 50 is wound. Next, the routine proceeds to step 507, where it is determined whether or not the ribbon winding amount has exceeded a predetermined winding length l (FIG. 15). If not, the flow returns to step 502, and the ribbon winding and color sensor detection continue. Is repeated.

If YES in step 507 (exceeding), this ink ribbon is regarded as the single-color ink ribbon 49 instead of the multi-ink ribbon 50. Therefore, the process proceeds to step 508 and the head motor M3 is driven to the ribbon winding off position. Shift,
Next, the process proceeds to step 509 to display a cassette setting error.

If the barcode is detected by the color sensor S3 in step 505 (if YES), the process proceeds to step 510 to set the multi-ribbon set color (MRS) to a color according to the barcode.

Next, in step 511, it is determined whether or not the MRS is the designated color that is to be searched for, and if NO (NO), the process returns to step 406 in FIG. That is, when the MRS is undecided after the power is turned on, it is necessary to restore the original because it is impossible to determine what color will come when cueing.

In the case of YES in step 511, the process proceeds to step 512, in which the head motor M3 is driven to shift to the ribbon winding off position, and the ribbon leading of the designated color ends.

Therefore, by the above processing, the multi-ink ribbon can be efficiently cueed without being cueed wastefully, and an error when a different ink ribbon is inserted can be detected.

FIG. 24 is a flowchart of the above-described error detection during printing (FIG. 22). Error detection during printing will be described with reference to FIG.

During printing, error detection is performed at regular intervals, for example, every drive pulse of the carriage motor M2, or every heat cycle of the thermal head 18.

In FIG. 24, first, in step 601, the ribbon sensor S2
It is determined whether or not it is the ribbon end.

If the ribbon end is detected, the process proceeds to step 602, printing is stopped (carriage 14 is stopped), the head motor M3 is driven to raise the thermal head 18, the ribbon winding is turned off, and then a ribbon end error occurs. Display.

If the ribbon end is not detected in step 601, it is regarded as normal, and the process proceeds to step 603 to check whether or not the barcode is detected by the color sensor S3.

If a barcode is detected, the barcode is heated and printed by the thermal head 18 during printing,
The process proceeds to step 604 because it is abnormal.

In step 604, it is determined whether the color designation is a single color designation or a multi-color designation. If the color designation is a single color designation, the multi-ink ribbon is erroneously loaded although the print menu is a single color designation. Stops printing and displays a cassette set error.

In step 604, if the color specification is multi-designation, there is no mistake in setting the cassette, but since the barcode portion has been printed due to a mistake such as ribbon cueing, the process proceeds to step 606 and printing is performed. Stop, and display the ribbon winding error.

If no bar code is detected in step 603 (N
In the case of O), it is considered that printing is normally executed, and the error detection processing ends.

Note that the error display is generally displayed on the CRT, but as a method of notifying the error, a method of sounding a buzzer or a method of turning on this with a warning light can be adopted, and in this case, the means does not matter. Absent.

Therefore, an error in the cassette or the ink ribbon can be detected by the above-described processing described with reference to FIG.

In the above embodiments, various sheets such as a transparent plastic thin plate used for an overhead projector or the like can be used as the recording medium in addition to the recording paper.

Further, the heating means is not limited to the thermal head 18 in the above-described embodiment, but may be, for example, an infrared ray or a laser beam.

Further, in the above-described embodiment, the serial head in which the thermal head 18 reciprocates along the recording sheet 4 is exemplified. However, the present invention is not limited to this, and for example, a thermal head such as that shown in FIG. The present invention can be similarly applied to a so-called full line type in which the heating means is provided over the entire recording width.

Here, in FIG. 25, 4 is a recording sheet, 75 is a platen, 76 is a full line type thermal head, 77 is a full line type single color ink ribbon sheet, and 78 is a full line type multi ink ribbon sheet. It can be implemented with substantially the same configuration as shown and described in the previous embodiment.

Further, in the above-described embodiment, the type in which the ink ribbon cassette is loaded on the carriage 14 and reciprocates has been described.
The present invention is not limited to this, and can be similarly implemented in a recording apparatus of a type in which the ink ribbon cassette is stationary.

Further, in the above-described embodiment, the case where the ink ribbon cassettes are stacked in two stages has been described, but this can be similarly performed even when the ink ribbon cassettes are stacked in three or more stages.

Furthermore, although the case where the multi-color ink ribbon is coated with three colors of dander is illustrated, the present invention can be similarly carried out with two or four or more colors. May be applied to all of the multi-color ink ribbons.

The platen may be a flat platen or a cylindrical platen that also serves as a sheet conveying roller.

Furthermore, although the case where a heating means such as a thermal head is used has been described, the present invention is applicable to all types that use an ink ribbon, for example, an impact type such as a wire dot or the like.

Furthermore, in the above-described embodiment, the case where black is used for the upper stage and multi-color ink ribbons are used for the lower stage is illustrated, but this may be upside down, and further, the print menu may be specified as described in the print menu above. By doing so, it is possible to make it possible to use it even if the multi-color is set up or down.

〔The invention's effect〕

As is clear from the above description, according to the present invention, in an ink ribbon cassette mounted in a recording device that transfers ink of an ink ribbon to a recording sheet by using a thermal head, the ink ribbon is transferred from a supply side to a winding side. An ink ribbon transport path for transporting, a free end for arranging a friction member for pressing the ink ribbon, a support end located on the other end side of the free end, the free end and the support end And an intermediate portion that bends so that the free end portion and the supporting end portion face each other, and the extension direction of the free end portion is along the winding direction of the ink ribbon. A cantilever spring member attached to the ink ribbon cassette at the support end and a pressing member for holding the ink ribbon together with the friction member. A surface and the free end portion of the cantilever spring member on the downstream side in the ink ribbon winding direction and the support end portion to form the ink ribbon transport path so as to approach the support end portion. And a pressing force with which the friction member presses the ink ribbon against the pressing surface from the take-up side than when the ink ribbon is conveyed from the supply side to the take-up side. Since it is configured to be larger when moving in the supply side direction, the tension on the ink ribbon is greater when moving from the take-up side to the supply side than when the ink ribbon is being conveyed from the supply side to the take-up side. Is large, it is possible to eliminate problems such as the ink ribbon being pulled out of the cassette carelessly during non-recording, and unnecessary tension does not act on the ink ribbon during recording. Since it is possible to prevent the occurrence of dirt due to slippage between the ink ribbon and the recording sheet, and it is not necessary to increase the strength of the ink ribbon more than necessary, the ink ribbon to be housed in the cassette by making the base film thin. Since the length of the ink ribbon can be lengthened and the ink ribbon can be prevented from unintentionally reversing during non-recording, wrinkles caused by slack in the ink ribbon and contact or entanglement with other mechanism parts may cause the ink ribbon to move backwards. The effect that cutting can be prevented is obtained.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view of the entire structure of a carriage on which an ink ribbon cassette according to the present invention is mounted, and FIG. 2 is an external perspective view of a word processor equipped with a recording device suitable for carrying out the present invention. FIG. 4 is a plan view of a recording apparatus in which the ink ribbon cassette according to the present invention is mounted, FIG. 4 is a cam chart showing the movement of the cam on the carriage of FIG.
5 is a plan view of the cassette setup down mechanism in FIG. 1, FIG. 6 is a side view of the cassette down in FIG. 5, and FIG.
Fig. 8 is a side view of the setup shown in Fig. 5 and Fig. 8 is the first view.
FIG. 9 is a plan view of the ribbon winding mechanism shown in FIG.
FIG. 10 is a plan view of the head when not in operation (released), FIG. 10 is a plan view of the head-up / down mechanism, FIG. 11 is a side view of head-up shown in FIG. 10, and FIG. Fig. 13 is a side view when the ink sheet cassette is partially cut away.
FIG. 14 is an external perspective view of FIG. 13, FIG. 15 is a structural diagram of a multi-ink ribbon, FIG. 16 is a block diagram of a control system of a recording apparatus according to the present invention, and FIG. 17 is a recording apparatus of FIG. FIG. 18 is a flow chart of power-on processing, FIG. 18 is a flow chart of initialization processing of the positions of the thermal head and cassette in FIG. 17, and FIG. 19 is a flow chart of ribbon hanging processing,
FIG. 20 is an explanatory diagram showing an example of color designation in the text, FIG.
(A) and (b) of the figure are explanatory views showing an example of color designation in the print menu, FIG. 22 is a flow chart of a recording (printing) sequence in the recording apparatus of the present invention, and FIG. FIG. 24 is a flowchart of the ribbon cueing process, FIG. 24 is a flowchart of the error detecting process in FIG. 22, and FIG. 25 is a perspective view of the recording unit of the full-line recording apparatus according to the present invention. 4 ... Recording sheet, 5 ... Platen, 14 ... Carriage, 16 ... Head cam (for head up / down), 17 ...
… Ribbon cam (for setup down), 18 …… Recording head (thermal head), 40 …… Ink sheet cassette (ink ribbon cassette), 49 …… Ink ribbon (ink sheet), 50 …… Multicolor ink ribbon (ink sheet) ), M3 head motor, S2 ribbon sensor, S3 color sensor (color detection means), CPU central processing unit.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Kaname 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (56) References 61-112963 (JP, U)

Claims (3)

(57) [Claims] 1. An ink ribbon cassette mounted in a recording apparatus for transferring ink of an ink ribbon to a recording sheet by using a thermal head, wherein an ink ribbon transport path for transporting the ink ribbon from a supply side to a winding side, A free end for arranging a friction member for pressing the ink ribbon, a support end located on the other end side of the free end, and the free end between the free end and the support end And an intermediate portion which is bent so as to face the supporting end portion, and the ink ribbon cassette at the supporting end portion such that the extension direction of the free end portion is along the winding direction of the ink ribbon. A cantilevered spring member attached to the friction member, a pressing surface that is arranged to face the friction member and holds the ink ribbon together with the frictional member, A guide member that is arranged between the free end portion and the support end portion on the downstream side in the ribbon winding direction, and that forms the ink ribbon transport path so as to approach the support end portion, The pressing force with which the friction member presses the ink ribbon against the pressing surface is greater when the ink ribbon is moved from the winding side to the supply side than when the ink ribbon is conveyed from the supply side to the winding side. Ink ribbon cassette characterized by being larger. 2. The cantilever spring member is arranged along the ink ribbon transport path downstream of the recording operation position of the thermal head in the ink ribbon winding direction. The ink ribbon cassette according to item 1. 3. The guide member is configured such that when the ink ribbon is conveyed from the supply side to the take-up side rather than when the ink ribbon is moved from the take-up side toward the supply side. The ink ribbon cassette according to claim 1, wherein the ink ribbon is strongly pressed to the friction member side rather than the pressing surface side.