FR2602463A1 - INK RIBBON CASSETTE AND RECORDING APPARATUS USING THE SAME - Google Patents

Abstract

THE INVENTION RELATES TO AN INK RIBBON CASSETTE AND TO A RECORDING APPARATUS USING THIS CASSETTE. THE CASSETTE CONTAINS AN INK RIBBON 1 WHICH CAN BE UNWINDED TO PASS THROUGH A RECORDING ZONE IN WHICH A THERMAL HEAD HEATS THIS INK RIBBON IN ACCORDANCE WITH IMAGE INFORMATION TO BE CARRIED OUT ON A RECORDING MEDIA. IN THE EVENT OF AN ERROR RECORDING MADE, THE CASSETTE AND THE PRINTING DEVICE IN WHICH IT IS MOUNTED ARE DESIGNED FOR A CORRECTION TO BE POSSIBLE BY APPLYING THE INK RIBBON 1, BY MEANS OF A ROLLER 54 , AGAINST THE RECORDING MEDIA IN ORDER TO REMOVE THE INK PREVIOUSLY APPLIED ON THIS LATEST. FIELD OF APPLICATION: TYPEWRITERS, FAXES, PERSONAL COMPUTERS, TEXT PROCESSING MACHINES, ETC.

Description

The present invention relates to a sheet cassette or ink ribbon

  designed to be used in an electronic typewriter; a fax machine, a personal computer, a word processor or the like, and a recording apparatus in which the cassette can

to be used.

  The invention also relates to a sheet or ink ribbon cassette capable of using a sheet or an ink ribbon allowing a correction of the recorded image when necessary, and an apparatus

  on which the cassette can be mounted.

  A conventional recording apparatus capable of correcting the recorded image in accordance with a

  correction information had to be equipped with a correction tape 13 in addition to a recording ink ribbon.

  In such a correction, the recording ink ribbon had to be retracted from the recording position, and the correction tape had to be brought into the recording position by means of upward or downward rotation. As a result, the conventional recording apparatus was inevitably large. An object of the invention is to provide a paper cassette or ink ribbon capable of producing a sharp recorded image and to safely take off or lift an erroneously recorded image, as well as a recording apparatus in which this cassette

can be used.

  Another object of the invention is to provide a foil cassette or ink ribbon for reducing the size of the image recording apparatus, as well as a recording apparatus in which

  this cassette can be used.

  Another object of the invention is to provide a foil or ink ribbon cassette using a sheet or ink ribbon which can be used both for image recording and for correcting erroneous recording, as well as for a recording device

  in which this cassette can be used.

  The invention will be described in more detail with reference to the accompanying drawings by way of non-limiting examples and in which: - Figure 1 is a cross section of a corrective ink ribbon used in one embodiment of the invention; FIG. 2 is an external perspective view of a typewriter constituting an embodiment of the invention; FIGS. 3 and 4 are perspective views of a recording block according to the invention; Figures 5 and 6 are plan views of a head rotation mechanism and a ribbon receiving mechanism; - Figures 7 and 8 are side views of these mechanisms; FIG. 9 is an external perspective view of a correction ink ribbon cassette; Figure 10 is a plan view of the interior of the cassette; Figure 11 is an outer plan view of another embodiment of the correction ink ribbon cassette; FIGS. 12 to 15 are partially cutaway plan views showing a switching operation; FIGS. 16A, 16B, 17A and 17B are schematic views on an enlarged scale showing the function of the recording block of the apparatus according to the invention; Fig. 18 is a schematic diagram of an output unit; Fig. 19 is a flow chart showing a power-up sequence of the output unit; Fig. 20 is a diagram showing image output ranges according to various types of ribbon; Fig. 21 is a flowchart of a key operation sequence; FIG. 22 is a flowchart of a tape slack retrieval sequence; Fig. 23 is a flowchart of a ribbon mode change sequence; FIG. 24 is a flowchart of an inversion sequence between the print modes and the correction modes; Fig. 25 is a flowchart of a print / correct sequence; and - Figure 26 is a diagram showing the relationship between the printing position, the head and indexes. We will first give explanations

  concerning a sheet or an ink ribbon used in the present invention.

  The sheet, made in the form of an ink ribbon, is called a self-correcting tape capable not only of making an image recorded in accordance with a recording information, but also of correcting the recorded image by removing or taking off

  the ink deposited on a recording medium.

  Figure 1 is a cross section of a

  ink ribbon 1 usable in the present invention.

  The ink ribbon 1 is composed of a substrate sheet 2 on which an intermediate ink layer 3a and a surface layer 3b are formed. As explained in more detail below, the intermediate ink layer 3a is composed of a thermoplastic resin containing a coloring material such as carbon black or dyes, while the surface layer

  3b is composed of a resin of the transparent wax type.

  The substrate 2 may be composed of a film or paper already known. Advantageous examples are relatively high heat resistant plastic films, such as polyester, polycarbonate, triacetylcellulose or polyimide, or papers such as regenerated cellulose "Cellophane", treated paper with sulfuric acid or capacitor paper. The thickness of the substrate 2 is advantageously between 1 and 15 gm in the case of a thermal head to be used as a heat source for a heat transfer, but it is not limited in

  the case where a thermal source capable of selectively heating the ink layer, such as a laser beam, can be implemented.

  To form a recording, the intermediate ink layer 3a must be easily removable from the substrate 2 when there is a long time between the application of thermal energy to the intermediate ink layer 3a and the separation of the substrate 2 a recording medium such as a recording paper or a plastic sheet for a backlight, that is when the ink ribbon 1 and the recording medium are held in face-to-face contact, being Subjected to heat application, and that the ink ribbon 1 is considerably cooled by the movement

of the thermal head.

  For this reason, the intermediate ink layer 3a contains not only a hot melt binder 30 such as a natural wax, a petroleum wax or a synthetic wax, but also oily substances such as a polyolefin resin, a resin of the type polyamide, a polyester resin, an epoxy resin, a polyurethane resin, a polyacrylic resin, a polyvinyl chloride resin, a cellulosic resin, a polyvinyl alcohol type resin, a petroleum resin, a phenolic resin , a polystyrene type resin, a polyvinyl acetate resin, an elastomer such as natural rubber, styrene-butadiene rubber, isoprene rubber or chloroprene rubber, polyisobutylene, polybutene, plasticizers, mineral oil or a vegetable oil, so as to have a melting temperature of about 50 to 100 C in the entire ink layer, 10 y com taken the dyestuff and other possible additives. The transparent top layer 3b must be softened by being heated by the thermal head and must firmly adhere to the recording medium and mix with the intermediate ink layer 3a in the molten state with difficulty. This is the reason why the hot-melt binder must advantageously contain the abovementioned resins in an amount of at least% and the waxes, plasticizers, mineral or vegetable oils mentioned above, in order to have a temperature of melting of about 50 to 100 C in the entire transparent layer. In addition, to improve the rupture of the surface layer 3b, the latter can be

  shaped in the form of dots or may have other surface irregularities.

  The thickness of the intermediate ink layer 3a is advantageously between 0.5 and 10 dm, and the thickness of the entire thermal transfer ink layer (comprising the intermediate ink layer 3a

  and the transparent surface layer 3b) is advantageously between 2 and 20 gm.

  For the dyestuff, various dyes and pigments known in the field of printing can be used. The dyestuff content of the intermediate layer 3a is advantageously between 1 and 80%. The intermediate layer 3a and the surface layer 3b may further contain additives such as a dispersant or a compound filler of a powdered metal, an inorganic powdery material or a powdered metal oxide. The intermediate layer 3a and the surface layer 3b are advantageously composed of materials which are not mutually soluble, but the mutual separation is still possible due to the difference in melt viscosity, even if the materials are

mutually soluble.

  An electronic typewriter will now be described as an example of a recording apparatus for performing a recorded image in accordance with a recording information and correcting an erroneous recording by means of the ink ribbon described above. In the following embodiment, the recording of an image by an ink deposit on the recording medium and the correction of an erroneous recording by the detachment of the ink thus deposited are made possible by the fact that that the ink sheet is removed from the recording medium shortly after thermal energy is applied to this ink sheet, or that said ink sheet is removed

after being cooled.

  FIG. 2 is an external perspective view of a typewriter T constituting a device

  outputting information in which a form of embodiment of the invention is used.

  FIG. 2 shows a plate 10, a recording sheet 12, a box 13, a general switch 14 for switching on and off, a keyboard 15 and a cover switch 16 which is actuated by a cover 13a, detects its open or closed state and, when the cover 13a is open, generates a signal to shift the ink ribbon to a predetermined position and to lock the keyboard. A MOKY mode touch is used to establish various modes such as tape modes as explained below. A touch of instruction

  PRKY produces a print instruction.

  The typewriter T mentioned above is equipped with a printer unit, an input unit, a display unit, a control unit and an external input-output interface. but the input unit and the display unit are obviously not essential with the

present embodiment.

  Figures 3 and 4 are perspective views of the recording unit according to the invention.

  A recording sheet 12 is supported by the plate 10 and is held in pressure contact with a portion, not shown, of a sheet feeding roller 17 by means of a pressing roller 18. The shaft 17a of The sheet feeding roller 17 has a gear wheel 19 which is connected to a sheet feeding motor M1 by a gear reduction gear 20. Therefore, the sheet feed motor M1 rotates the roller 17 to advance the recording sheet 12. The plate 10 holds the recording sheet 12 in position while a thermal head 25 performs a recording operation by pressing the recording sheet

12 through the ink ribbon.

  It will now be explained how a carriage 22 performs a reciprocating motion.

  A bar 21, placed in front of the plate 10 and parallel thereto, supports a carriage 22 (FIG. 6) movable in a direction A. Thus, the carriage 22 is capable of reciprocating along a

  transport path S of the recording sheet.

  A belt 23 extends between two unrepresented pulleys and a portion of this belt is fixed to the carriage 22. The unrepresented pulleys are connected, via unrepresented toothed wheels, to a carriage motor M2 which controls the movement alternatively of the carriage 22 in the direction A the ông of the bar 21, through the pulleys not shown and the belt 23. A detector 23 'limit switch, for detecting the position of the carriage 22, is placed a lateral end, close to a rest position. The carriage 22 supports a headrest 24 (Figure 1) rotatable on the bar 21. The headrest 24 is equipped with a heat sink 26 on which the thermal head 25 is mounted. The carriage 22 is supported and guided, by means of a guide portion 22a with which it is made in one piece, by a rack 27

  which has projections 27a, 27b at its ends.

  The carriage 22 further comprises a plate 28 for receiving an ink ribbon cassette 50 (FIG. 9) and the plate 28 of the carriage is equipped with a detector 29 for detecting the presence or absence of the cassette, its The platen 28 of the carriage supports a movable coupling lever 30 along a guide 28b in a direction C perpendicular to the platen 10. The lever 30 engages with an element 25. 31 'of coupling mounted on the heat radiator 26. A rotation of the heat radiator 26 in a direction B, moving towards or away from the plate 10, causes a movement of the lever 30 in the direction C, moving towards or away of the plate 10. The coupling lever 3D0 30 has an indexing mark 30a which allows the operator to visually check the next printing position. At its rear end, the coupling lever 30 has an engaging portion 30b which, by engaging with a switch lever 62 of the cassette 50, as described hereinafter, raises the lever 62 towards the

platinum 10.

  In the present embodiment, as explained above, the indexing mark 30a is provided on the coupling lever 30 which is close to the thermal head 25 and is connected to the control of the detachment state. so that it is sufficient to move the thermal head to the position of the indexing mark 30a to record in the position of said mark 30a. In this way, the presence of the marker does not reduce the

  recording speed and does not cause any other disadvantages such as noise.

  The method of assembly will now be described

  removable cassette 50 on the plate 28 of the carriage.

  The tray 28 of the carriage has, on its upper face, fixed lugs 28a and 28b and, on one of its lateral faces, an elastic hook 28c. Thus, the cassette 50 can be removably mounted on the tray 28 of the carriage by the engagement of openings 52h, 52i of a lower housing 52 of the cassette 50 (FIG. 10) with the tabs 28a, 28b and elastic engagement of a portion 52j of engagement of the lower casing 52 of the cassette

  with the hook 28c. Tray 28 of the carriage can naturally house not only a recording / correction tape cassette, but also a single color tape cassette of one color.

  We will now describe a mechanism for

  raise and lower the thermal head 25.

  Figures 5 to 8 illustrate an embodiment of the mechanism for contacting 30 (low position) and separating (high position) the head

  heat 25 and to wind the ribbon.

  The carriage 22 is equipped with an up / down motor M3 whose rotation is transmitted by means of

  gear wheels (not shown) and a gear gear 31 35 to a toothed wheel 32a for rotating an associated cam.

  32. The cam 32 has a projection 32b which bears against a stop 33 provided on the carriage 22 to limit the rotation of the cam 32 when it is rotated clockwise, that is to say in the direction D1 shown in Figure 7, or in the opposite direction of that of the clockwise, indicated at D2 in Figure 8. The stop 33 is made of an elastic material such as rubber to reduce the impact of contact

with the cam 32.

  A rise-and-descent lever 34 is provided on

  the carriage 22 and can rotate on an axis 35 (Figure 8).

  Between protrusions 34a, 34b of the lever 34, a helical spring 36 of torsion is mounted in the loaded state. Raising-lowering lever 34 supports on one of its ends a roller 37 which can rotate. A spring 38 for returning the head is provided between a spring support 24a forming part of the headrest 24 and a spring support 22B forming part of the carriage 22 in order to return the headrest 24 in the direction indicated by an arrow B2. that is, to move it away from platen 10 (FIGS. 6 and 8). The restoring force of the return spring 38 of the head is transmitted from a contact portion 24b of the headrest 24, by an arm 36a of the torsion spring 36 to the up / down lever 34. Therefore, the lever 34 is biased by the return spring 38 of the head in a direction E2 away from the plate 10 (Figure 8), and the roller 37 mounted on the lever 34 is held in position.

  pressure contact with cam 32.

  Consequently, the head 25 is turned towards the plate 10 under the effect of a rotation of the motor M3.

  We will now describe a reception mechanism

  or winding the ink ribbon 1.

  The carriage 22 comprises a receiving or winding shaft 39, which supports, by allowing it to rotate, a receiver or winder lever 40 and a receiver clutch 41 placed above the lever 40. The receiver lever 40 also rotatably supports a wheel winding tooth 42, so that a not shown toothed portion of the clutch 41 constitutes a sun wheel while the winding gear wheel constitutes a satellite. In a guide portion 22c of the carriage 22, there is provided a winding switch lever 43 that can be moved in directions G1 (FIG. 5) and G2O10 (FIG. 6), and one end of the switching lever 43.

  coil winding engages with the winding lever 40.

  A winding lever pressure spring 44 for biasing the winding lever in a direction F1 is mounted between a support 40a forming part of the lever 40 and a support 22d forming part of the carriage 22. The restoring force of the spring The pressure of the winding lever 40 is transmitted via the winding lever 40 to the winding switch lever 43 in order to urge the winding switch 43 in a direction G1 and maintain it in pressurized contact with the heat sink 26. The clutch or winding coupling 41 has a hub receiving member 41a to be engaged with a receiving hub 55 of the cassette 50. Furthermore, between the hub receiving member 41a and a gear wheel, not shown. of the winding coupling 41, a friction clutch, not shown, is provided for transmitting the rotation of the not shown toothed wheel.

to the receiver element 41a.

  We will now describe the contact functions of the head (low position), the separation of the head (high position) and the winding of the ribbon in the mechanism.

just described.

  Figures 5 and 7 illustrate a state of contact of the head (low position) in which the ribbon 35 can be wound. The motor M3 descending is started in the direction of clockwise to rotate the cam 32 in a direction D1 (Figure 7) through the reduction gear 31, thereby causing

  the projection 32b of the cam 32 in contact with the stop 33.

  The rotation of the cam 32 in the clockwise direction DI (FIG. 7) increases its radius at the point of contact of the roller 37 mounted on the up / down lever 34, so that this lever 34 rotates in the direction counterclockwise, in the direction E1 (FIG. 7), against the return force of the return spring 38 of the head. This rotation of the up-down lever 34 is transmitted, by the arm 36a of the torsion spring 36 mounted on the lever 34, to the contact portion 24b of the head-holder 24 to rotate it in the opposite direction to that of the clockwise, indicated in B1 (Figure 7). As a result, the thermal head, mounted on the heat radiator 26 of the head-holder 24, is pressed against the plate 10 through the recording sheet 12. Therefore, during the recording operation performed by the thermal head 25, this

  head is kept in contact with the recording sheet 12 which is supported by the plate 10.

  After the thermal head has come into contact with the plate 10, the radius of the cam 32 continues to increase, thus making the lever 34 more up-down in the opposite direction to that of the clockwise, indicated in E1 in FIG. 7. In this state, the movement of the head-holder 24 is limited because the thermal head 25 is already in contact with the plate 10. As a result, the movement of the arm 36a of the helical spring 36 of twist, kept in contact with the party

  contact 24b of the headband 24 is also limited.

  The rotation of the lever 34 up-down in the opposite direction of that of the clockwise, indicated in E1 in Figure 7, thus brings the torsion spring 36

  to free themselves from it. protrusion 34b of the lever 34, which has the effect of charging an additional force the spring 36.

  The restoring force of the helical spring 36 of torsion is now transmitted to the contact portion 24b of the head-carrier 24, since the projection 34b of the lever 34 of the downcomer is no longer in contact with the arm 36a of the helicoidal spring 36 of twist, thus pressing the thermal head

  against platinum 10 through the record sheet 12.

  When the projection 32b of the cam 32 is in contact with the stop 33 as shown in FIG. 7, the thermal head 25 is pressed against the plate 10 under

a predetermined pressure.

  The function of the mechanism will now be described

  winding ribbon for winding the ink ribbon 1.

  While the heat sink 26 on the headrest 24 is moving toward the platen 10 in the direction B1, the winding switch lever 43 moves in the direction G1 under the force of the pressure spring 44 of the lever. 'winding. Therefore, the winding lever 40 rotates in the direction F1, so that the winding gear 42 mounted on this lever meshes with teeth 27c of the rack 27. When the thermal head 25 is pressed against the plate 10 The movement of the winding lever 40 is limited by the contact position of the winding gear 42 and the rack 27, so that the winding gear 42 is biased towards the rack 27 by the spring 44 pressure of the winding lever. Thus, a movement of the carriage 22 in the recording direction A1 causes rotation of the winding gear 42 in the clockwise direction H1, and this rotation is transmitted to the winding coupling 41. so that the hub receiving member.41a rotates

  counterclockwise I1.

  Thus, when the cassette 50 is mounted on the plate 28 of the carriage, the ink ribbon 1 housed in the cassette can be wound by the engagement of a hub 55 for receiving or winding the cassette 50 with the element 41a of receiving this hub. We will now describe a separation operation or separation (high position) of the head 25 relative to the plate 10. Figures 6 and 8 illustrate

  a discarded state (high position) of the head, in which the winding of the tape is impossible.

  The up / down motor M3 is turned counterclockwise to rotate the cam 32 in the direction D2 (FIG. 8) through the reduction gear 31, 15. thus bringing the projection 32b of the cam 32 into contact with the stop 33. This rotation of the cam 32 in the direction D2 reduces the radius of the cam 32 at the point of contact

  with the roller 37 mounted on the lever 34 up-down.

  The lever 34 thus rotates in the direction E2 (FIG. 8) under the restoring force of the spring 38 of the return of the head in order to move the head-holder 24 in the direction B2 so that the thermal radiator 26 and the thermal head 25 mounted on the head-holder 24, are spaced apart from the plate 10. In addition, the movement of the heat radiator 26 in the direction B2 moves the winding-switching lever 43 in the direction G2, so that this lever makes turn the winding lever 44 in the direction F2 against the restoring force of the pressure spring 44 of the

  winding lever for separating the toothed wheel 42 from the rack 27.

  In this state of non-recording, in which the head 25 is spaced from the plate 10, the hub receiving member 41a, forming part of the winding coupling 41, does not rotate when the carriage 22 is moved along the bar 21 in the direction A1 or A2, so that the ink ribbon is not wound. The ink ribbon 1 is therefore not wound either in the case where a switching lever 62 (described hereinafter) and a roller

  54 of separation are separated from the plate 10, as described below, in relation to the thermal head 25.

  The restoring force of the return spring 38 of the head is chosen to be insufficient to load the torsion spring 36 of torsion, but it is able to work against the pressure spring of the winding lever, so that the position of the thermal head 25 and the winding gear 42 is

  determined by the radius of the cam 32.

  The up / down motor M3 can be started for a period necessary and sufficient to turn the cam 32, or it can be stopped following a detection of a variation of the current flowing in the motor M3. under the effect of the contacting of the projection 32b with the stop 33, or this

  The motor may be controlled by a sensor, not shown, for detecting the position of the cam 32.

  The head 25 as well as the switching lever and the peeling roller are spaced from the plate 10 in the case of a return of the carriage 22 to the rest position, the presence of an interval of a certain dimension of the image to be recorded (called skipping) or partial registration, and the unnecessary loss of ink ribbon can be prevented because the ink ribbon is not

not wrapped in these cases.

  Reference will now be made to FIGS. 9 and 10 to describe the ink ribbon cassette. The aforementioned ink ribbon cassette 50 houses the ribbon

inker 1 in a stacker

  composed of a lower part 52 and an upper part 63, and is removably mounted on the plate 28 of the carriage.

  The ink ribbon 1 is wound on a core 51 which is fitted on a projection 52a of the lower casing 52. The ink ribbon 1 is guided by rollers 53b, 53c, 53d each mounted to rotate on a projection 52b of the lower casing 52 , in a window 52c for detecting the ink ribbon and on a projection 52d of the lower casing, then it is exposed outside the casing c passing through an opening 52e, and is then guided by the peel roller 54, new introduced in the casement c by passing in -an opening -52 1, and finally

  received or wound by the receiving hub 55.

  When the cassette 50 is loaded in a predetermined position on the tray 28, the opening 52e is placed in a position corresponding to that of the head 25 so that the ink ribbon, exposed outside the casing c of the cassette, can be heated by the thermal head which generates heat corresponding to the information to be recorded. More particularly, heat generation is effected by a heat generating portion 25a composed of a plurality of heat generating elements. The ink ribbon 1 is pressed onto the roller 53b by means of a pressure spring 56 which is provided on the lower casing 52 and which carries a felt

  56a to prevent damage to the ink ribbon 1.

  A tension spring 57 urges the ink ribbon in a direction J to absorb slack or any relaxation of the ribbon. This tension spring 57 is mounted on the lower housing 52 and elastically exerts pressure on the ink ribbon 1, upstream of the rollers 53c.

  and 53d with respect to the direction of movement of the ink ribbon 1.

  Therefore, if the ink ribbon 1 becomes slack as a result of a change in its stroke due to the movement of the peel release lever 58 and the peel roller 54, this slack can be rapidly absorbed by the force exerted elastically by the peel. tension spring. The tension spring 57 also comprises a felt pad 57a on its face in contact with the ink ribbon 1 in order to avoid any deterioration of the latter. The felt pad can be replaced by a suitable coating applied

  on the surface of the tension spring 57.

  The release lever 58 can slide in the direction C1 or C2, along a lateral end 50a of the cassette 50 having the opening 52e. More particularly, the lever 58 is guided, at the front end, by an end portion 63a and a guide portion of the upper casing 63, as well as by an end portion, not shown, and by a guide portion, shown, of the lower housing 52 and, at the rear end, 15 by a folded portion 63b of the upper housing 63 and an upwardly bent portion 52b of the lower housing 52. The aforementioned roller 54 of detachment is rotatably mounted on an axis 54a positioned at the front end of the lever 58. The lever 58 further has a

  upper opening 58a and a lower opening 58b.

  A projection 52f on the lower housing penetrates into the upper opening 58a, and a return spring 59 is mounted between the projection 52f and the lever 58 along a guide rod 58c. The lever 58 is thus constantly biased downwards (direction C2) by the spring 59. Through the lower opening 58b, there is provided a slider 60 which can slide relative to the lever 58, along a guide 58d. It is also provided in the lower opening 58b a compression spring 61 between the lever 58 and the slider 60, along a guide rod attached to the lever 58 and a guide rod 58f attached to the slider 60, so that the latter is called down in the direction

  C2 and stopped by a stop 58g of the guide 58d.

  A switching lever 62 engages at one end 62a with the lower end 60a of the slider 60 and can slide in the direction K and rotate in the direction L between the lower housing 52 and the upper housing 63. At the rear end, the switching lever 62 has a folded portion 62b of communication which engages with the aforesaid projections 27a, 27b of the main body to move the lever 62 in the direction K. Lever 62 is limited by the sidelites of aperture 52c. In addition, the lever 62 is rotatable about a protrusion 62c, engaging a slot 63c in the housings

lower and upper 52 and 63.

  Near one end, the lever 62 has a projection 62d for preventing inadvertent lateral movement of the lever 62. However, the projection 62d has an inclined surface 62d1 so as not to interfere

  a lateral movement of the lever 62 in the case where the switching portion 62b engages with the seals 27a, 27b.

  Therefore, the protrusion 62d can pass on the roller

  52k only under a weak force during the movement of the lever 62.

  In the cassette 50 described above, the protrusion 27b of the apparatus engages with the switching portion 62b to move the lever 62 to the left, so that its end 62a protrudes from the end 50a of the cassette and is brought into a position in which it can engage with the engagement portion 30b of the apparatus. Thus, when the coupling lever 30 moves towards the plate 10 under the effect of the rotation of the motor M3 as explained above, the engagement portion 30b engages with the end portion 62a to push the lever 62 towards the 10. The lever 62 pushes, against the return force of the return spring 59, the lever 58 to the plate 10 in the direction C1. After the lever 58 has come into contact with the plate 10 through the ink ribbon 1 and the recording sheet 12, the slider 60 is pushed towards the plate 10 in the direction C1 against the restoring force of the spring 61, and the lever 58 is kept in pressure contact with the plate 10

  by the restoring force of the spring 61.

  As a result, the recording sheet 12 and the ink ribbon 1, after having been heated, advance together towards the peeling roller 54 and are then

away from each other.

  In the present embodiment, the switching lever 62 brings the peeling roller 54 into contact with the plate 10 only under a slight

  pressure through the function of the spring 61.

  As a result, the release roller 54 bears against the plate 10 under an elastic force and. stable, which prevents the defaced image from being defaced

  the ink or by a defective advance of the ink ribbon, such as the formation of folds or bias feed.

  On the other hand, when the protrusion 27a of the apparatus engages with the switching portion 62b, the lever 62 is moved to the right to retract the end portion 62a into the end 50a of the cassette, so that the lever 60 is not pushed and it remains spaced from the plate 10 by the restoring force of the return spring 59 when the coupling lever 50 is moved to the plate 10. As a result, the peel roller 54 remains spaced from the platen 10, so that the recording sheet and the ink ribbon 1 are separated from each other immediately after heating

  or after leaving the thermal head 25.

  Fig. 11 shows another embodiment of the ink ribbon cassette, in which the release lever 58, the peel roller 54, the

  spring 59, the slider 60 and the spring 61, supra, are replaced by a built-in lever 63 of contact.

  In this embodiment, the contact lever 63 is supported by the lower housing 52 and the upper housing (not shown) so as to be slidable in the directions C1, C2, and is moved in these directions by a lever. Switching 62 latching

with him.

  Therefore, in the cassette described above, the protrusion 27b of the apparatus engages with the switching portion 62b to move the lever 62 to the left, so that the end portion 62a protrudes from the end 50a of the cassette and is brought into a position in which it can engage with the engaging portion 30b of the apparatus. When the coupling lever 30 is moved towards the plate 10 by the motor M3 as explained above, the engagement portion 30b engages with the end portion 62b to push the lever 62 toward the plate 10. The lever 62 pushes the contact lever 63 to a position which is approximately the same as that of the thermal head 25 relative to the plate 10, so that the contact lever is stopped in a position in contact with or near

platinum 10.

  As a result, the recording sheet 12 and the ink ribbon 1, after heating, move together to the peel roller 54 and are separated.

from each other then.

  On the other hand, when the protrusion 27a of the apparatus engages with the switching portion 62b, the lever 62 is moved to the right to retract the end portion 62a within the end of the cassette. The lever 62 is therefore not pushed and it remains retracted relative to the plate 10 when the coupling lever 30 of the device moves towards the plate 10. As a result, the contact lever 63 remains spaced from the plate 10, and the recording sheet and the ink ribbon 1 are separated immediately after the heating or

  after passing the thermal head 25.

  The switching of an image recording operation and a correction (peeling) operation in the present embodiment will now be described. Figures 12 to 15 are plan views illustrating image recording and correction operations, in which the ink ribbon cassette 10 is loaded onto the tray 28 of the carriage to enable

recording images.

  The method will now be explained to selectively record an image or

  correction of an image by means of the ink ribbon cassette 50.

  Reference will first be made to FIGS. 12 and 13 showing the case of recording an image by transfer or transfer, at the same time, of the intermediate layer 3a and of the surface layer 3b of the corrective ink ribbon 1 20 on the record sheet 12, figure 12 showing

  the operation of switching the cassette.

  First, in response to receiving registration information as explained hereinafter, the up / down motor M3 (FIG. 6) is rotated in the opposite direction to the one of the hands of a shows, as previously explained, to move the thermal head 25 in the direction B2 away from the plate 10. The coupling lever 30 is also moved in the direction C2. Then the motor M2 of the carriage (FIG. 3) is started to move the carriage 22 (FIG. 6) to the left or in the direction A2, thereby engaging the switching portion 62b of the switching lever 62 with the projection 27a of the rack and moving said switching lever 62 to the right, or in the direction K1. This movement has the effect of releasing the coupling lever 30

  the coupling portion 62a of the switching lever 62.

  The restoring force of the return spring 59 biases the release lever downward (C2 direction) and the switching lever counterclockwise (L2 direction). Therefore, the roller 54 of

  detachment is sufficiently removed from the plate 10.

  Figure 13 shows the recording status of an image. In the state shown in FIG. 5, the up / down motor M3 (FIG. 6) is turned clockwise in order to turn the thermal head 25 towards the plate 10 (direction B1 ), and bring it into contact with the plate 10 through the recording sheet 12 and the corrective ink ribbon 1. In this state, the movement of the heat radiator 26 in the direction B1 moves the coupling lever towards the platinum 10 (Cl direction). However, as explained above, the return spring 59 recalls the lever 58 of detachment down (C2 direction) and the switching lever 62 in the opposite direction of that of the clockwise (L2 direction), so that the release lever is sufficiently spaced from the recording sheet 12. The carriage 22 is thus moved to the right, that is to say in the recording direction A1, and the heat generating zone 25a, consisting of several heat-generating resistors, of the thermal head 25 is activated in accordance with FIG. to the recording information for heating the correcting ink ribbon 1. Immediately after this heating, the ink ribbon 1 is deflected at the end 25b of the thermal head by the rotation of the winding coupling 41 and It is thus detached from the recording sheet 12. In this way, the intermediate layer 3a is transferred or transferred, as well as the surface layer 3b, on the recording sheet 12 to form an image of a corresponding color. to the coloring matter contained in the intermediate layer 3a. The correction tape 1 is

  then wound on the receiver core 55.

  We will now explain the correction operation.

  FIGS. 14 and 15 illustrate the case of the correction of an erroneous recording by detachment of the ink already deposited, and FIG. 16 shows the operation.

switching the cassette.

  First, in response to receiving correction information, as explained below, the up / down motor M3 (FIG. 6) is turned counterclockwise. , as explained previously, in order to move the head

  in the direction B2 and away from the plate 10.

  The coupling lever 30 is also moved in the C2 direction. Then the motor M2 of the carriage (Figure 3) is started to move the carriage (Figure 6) to the right or in the direction A1, thereby engaging the switching portion 62b of the switching lever 62 with the projection 27b of the rack 27 and moving a switching lever 62 to the left or in the A2 direction. This movement of the switching lever 62 brings its engagement portion 62a into engagement with the coupling lever 30. The return spring 59 recalls the release lever 58 (C2 direction) and the switching lever 62 in counterclockwise (direction L2), so that the release lever is

  sufficiently removed from the record sheet 12.

  Fig. 15 shows a correction status of an erroneous recording by detachment of the erroneously deposited ink. As explained previously with reference to FIG. 13, the up / down motor M3 (FIG. 6) is started in a clockwise direction in order to turn the thermal head 25 towards the plate (direction B1) and to bring it in contact with the plate 10 35 through the recording sheet 12 and the corrective ink ribbon 1. In this operation, the movement of the heat radiator 26 in the direction B1 moves the lever

  coupling 30 to the plate 10, in the direction C1.

  This displacement causes the engagement portion 30b of the coupling lever 30 to push up the coupling portion 62a of the switching lever 62, thereby rotating the switching lever 62 in a clockwise direction ( L1) against the force of the return spring 59. This rotation of the switching lever 62 in the direction L1 moves the release lever 58 upwards (direction Cl) to bring it into contact with the recording sheet 12 The coupling lever 30 further moves in the direction C1 to rotate the switching lever 62 in the direction L1, so that the slider 60 is displaced in the direction C1.

  against the force of the return spring 59 and the spring 61.

  The force of the spring 61 thus brings the roller 54 of separation of the release lever 58 in contact with the sheet

  12 recording through the ink ribbon 1, or in close proximity to this contact position.

  In this state, the carriage 22 is moved to the right or in the recording direction A1, and the heat generating zone of the thermal head 25 is activated according to the correction information for heating the ink ribbon 1. The it is deflected by the rotation of the coupling 41 of winding in the direction I1, at the level of the roller 54 of separation of the release lever 58 remote from 1 of the heat generating part 25a, and it is therefore taken off. the record sheet 12. The intermediate ink layer 3a of the ink ribbon 1 is adhesive and peels off the erroneously deposited ink from the recording sheet 12. The correction tape 1 is

  then wound on the receiver core 55.

  The above-explained operations of recording an image and correcting an image will become more clearly apparent from the explanations given with respect to the enlarged schematic views of FIGS. 16A, 16B and FIGS.

17A, 17B.

  Figs. 16A and 16B illustrate the recording state of an image. The thermal head 25 is held in pressurized contact with the plate 10 through the correction tape 1 and the recording sheet 12. The heat generating part 25a, consisting of several heat generating resistors, of the thermal head 25 is activated in accordance with the recording information, so as to heat the corrective ink ribbon 1 during the movement of the thermal head 25 in the direction A1. The heat melts the intermediate ink layer 3a of the ink ribbon 1 in accordance with the recording information

  and adheres this layer to the recording sheet 12, thereby forming an image.

  Then the thermal head 25 is moved in the direction A1, and the ink ribbon 1 is detached from the recording sheet 12 by being deflected to the edge 25b of the thermal head 25 immediately after heating, that is to say before the heated ink ribbon 1 can be cooled. In this way, the ink B1 of the area

  heated is reported on the record sheet 25 to form a record.

  The correction of an image is effected by a detachment of the ink in accordance with information

  correction, as shown in Figs. 17A and 17B.

  As explained above, the thermal head 30 is kept in contact with the plate 10 through the corrective ink ribbon 1 and the recording sheet 12, and the heat generating part 25a of the thermal head 25 is activated in the position of the ink B1 to be peeled off to heat the ink ribbon 1 during the movement of the thermal head 25 in the direction A1. This heating makes adhesive the intermediate layer 3a. The ribbon 1 is held in contact with the recording sheet 12 by means of the detaching roller 54, at a point spaced from 1 of the heat generating part 25a of the thermal head 25 in an opposite direction. to that of the arrow A1 (Figure 16A). Then the thermal head 25 and the peel roller 54 move in the direction A1 while remaining spaced from the distance 1, so that the ink ribbon 1 is deflected and detached from the sheet 12 of recording, in the position of the roller 54 of separation, where the ink ribbon has been

  time after being heated and is therefore already cooled.

  The time before separation can be determined by the speed of movement of the thermal head 25 and the distance 1. The cooling of the ink ribbon 1, which is determined by the heating carried out by the thermal head and the time before the separation, lpi even determined by the position and the speed of displacement of the separation roller 54, causes condensation destruction of the intermediate ink layer 3a, so that said layer adheres firmly to the substrate 2 and becomes adhesive to loosen the ink B1 deposited on the record sheet 12. The transparent surface layer 3b remains on the recording sheet 12, but does not interfere with subsequent recording because it is transparent. As explained above, the present embodiment of the apparatus according to the invention is capable of recording an image and of correcting an image by peeling off the deposited ink. These recording and image correction operations are made possible by the separation effected by the ink ribbon at the edge 25b of the thermal head immediately after the heating, or by the movement over a distance 1 after heating by the thermal head. , in combination with the delamination effected by the ink ribbon on the roller remote from 1 of the thermal head. Figure 18 is a simplified diagram of

  the printing apparatus described above.

  It should be noted that Figure 18 shows the constituent block connections, but the detailed control lines are not shown. The reference

  digital 100 denotes a central processing unit delimited by a broken line frame.

  A central processing unit 101 reads various programs and data in a read-only memory 102, etc., as explained hereinafter, performs the necessary calculations and assumes various commands. Several central processing units may be provided if desired. A read-only memory stores various programs for the central processing unit and data necessary for printing, such as character codes, point patterns (character generator). A RAM or read-write memory (103) includes a work zone 20 for temporary storage of data processed by the central processing unit, a buffer zone for storing data entered from the keyboard 15 and an external interface IFu, as described hereinafter, a text box for storing documents, etc., and a battery backup allows it to hold the data in memory even when the power supply

  in energy is cut off by the main switch-14.

  The central processing unit is connected to a printing unit 107 via a thermal head drive circuit 104, a circuit

  motor driver 105 and a detection unit 106.

  The driving circuit 104 of the thermal head controls the thermal head 25 of the aforementioned printing unit 107 or the control of the central processing unit 35 while the drive circuit 105 of the motors controls the motor M1 sheet advance engine, the M2 engine of the cart and the engine of ascent-descent M3 also under

  the control of the central processing unit.

  The detection unit 106 transmits the information of the above-mentioned limit sensor 23 and sensor 29 located in the printing unit 107 to the central processing unit. A power source 108 provides a voltage VH for the control of the thermal head 25, a voltage VM for the sheet feeding motor M1, the carriage motor M2 and the raising-lowering motor M3, and a

  Vcc voltage for logic circuits.

  A controller 109 executes various commands such as changing the voltage and current of the energy VH supplied to the thermal head or changing the heating period or the duty cycle of the thermal head.

  , under the control of the central processing unit.

  A keyboard 15, intended for the introduction of

  various data necessary for printing and editing, is connected to the central processing unit via a keyboard connector 110.

  In addition, a liquid crystal display device 70 for displaying the data entered by means of the keyboard 15 or any other information is

  connected to the central processing unit via a connector 111.

  The liquid crystal display device 70 can be replaced by other devices

  display such as a cathode ray rube.

  The central processing unit can be connected, via an IFC interface connector, to various interfaces 112 for communicating with external equipment or for controlling the present apparatus by external equipment, such as an interface. RS232C, a central IC interface, a modem, etc. In addition, the central processing unit can be connected, via a cartridge connector 112, to a ROM cartridge 113 for special functions and for printing by means of different fonts, and to 114 RAM cartridges to expand the memory used for storage

documents and data.

  An output device can be provided

  acoustic such as a buzzer, although this is not shown.

  The power-on sequence will now be described by explaining the control of the printing apparatus by means of a program stored in the aforesaid ROM. Fig. 19 is a flow chart showing the power control sequence of the present embodiment of the apparatus according to the invention. As explained previously, this apparatus is equipped with a thermal printer capable of recording an image and correcting an image, it can accept a corrector 20 for recording and correction or a non-corrective tape (ordinary ink ribbon) , and he is able to select a recording or an image correction

in the case of the correction tape.

  In the present embodiment, the printing and correction information may be the ribbon identification signal or the introduced signals.

by keys.

  Firstly, when the MST is turned on, the thermal head 25 is raised and moved away from the plate 30 (Sl), and the carriage 22 is moved towards the end-of-stroke sensor 23 so that the absolute position of the cart

is detected (S2).

  Following the detection of the carriage 22 by the end-of-stroke sensor 23 (step S3), a flag of

  correction memorized in RAM TRAM is reposi-

  selected to select the print operation in the case of the correction tape (step S4). The print status is therefore in normal mode after power on. Normal mode can be applied. Then, the slack is removed so that a uniform print quality (S5) is obtained as explained in detail below. Then a step S6) -checks a ribbon mode flag, stored in RAM TRAM and indicating whether the ribbon loaded or the ribbon to be loaded is a corrector corrector or not. The ribbon mode flag may be positioned by the sensor 29 identifying the type of ribbon or the ribbon cassette, or by an input made by means of a key or by an acoustic input of the operator. If the indicator indicates the non-corrective mode (NO branch), the program 15 proceeds to a step SB. On the other hand, if the indicator indicates the correcting mode (YES branch), the carriage 22 is moved to the printing position (FIGS. 14 and 15) and the ink ribbon cassette 50 is placed in the printing mode, so that to allow a print operation 20 (step S7). In the next step S8, the carriage 22 is moved to a left margin position LM1 for the non-corrective mode in the case of the non-corrective mode, or to a left margin position LM2 for the corrective mode in the case corrector mode. Margins at

  left will be explained below with reference to Figure 20.

  The ribbon mode flag is maintained even when the power is off, thanks to the presence of a back-up power supply. It is also possible to identify the ribbon at power up and, if the result is different from that obtained when the power is turned off, to give an alarm or to display a message before the data is entered, because there is a risk of error of introduction, by the operator, of corresponding data

  to a correction tape while a non-corrective tape is actually loaded.

  The aforementioned margins for a non-corrective tape and for a correction tape will now be explained with reference to Fig. 20. A left margin position LM1 and a right margin position RM1 define a printable gap with the non-correcting tape. . In the present embodiment, 80 characters can be printed. In addition, in the case of the correction tape, LM2 and RM2 define an interval in which printing or correction is possible. In the present form of

  realization, 76 characters can be printed or corrected.

  Two characters at the left end are in a corrective mode setting position (.PEMC) (coemutation area at the position of protrusion 27a), and two characters at the right end are in a position of setting of the printing mode PEMI (switching area at the position of the projection 27b). In addition, a ZEM interval from the sensor 23 to the printable interval is used to catch slack tape. The protrusions 27a and 27b

  are used for switching printing and tape correction operations, as previously explained.

  Fig. 21 is a flowchart showing the control sequence of inputs inputted by the keys by the operator. By identifying an input made by means of a key in a step S1, a step S2 determines whether a key for setting the ribbon mode has been actuated and, if the answer is affirmative, the program proceeds to a step S8 of introduction of a ribbon mode change subprogram; but, if the answer is negative, the program proceeds to a step S3. The tape mode setting key RMKY can be replaced, for example, by maneuvers of the MOKY mode key and the number key "1" shown in Fig. 4. Step S3 then determines whether the CCKY button for printing / correction mode change has been activated 35 and, if so, the program proceeds to a step S7 for the introduction of a printing / correction mode changing routine. The CCKY key for changing the print / correction mode can be replaced, for example, by a maneuver of the MOKY mode key shown in FIG. 4 and the number key "2". The CCKY key

  change of print / correction mode is used to change the printing / correction mode of the above correction tape.

  If the answer to the interrogation of step S3 is negative, the program proceeds to a step S4 to determine whether the key pressed is a function key, such as a return key, a tab key, a centering key, a left margin key, and so on. If the result is affirmative, the program

  proceed to step S6 for a function key command routine.

  On the other hand, if the answer to the interrogation of step S4 is negative, the operated key is identified as a PRKY print key and the program proceeds to step S5 for a print command routine. . After completion of the just explained sequence, the program returns to step S1 waiting for a next key input. The foregoing explanation has been limited to the case of data entry by means of the keypad, orders being naturally given in subsequent information or from external control equipment such as a central computer. The tape slack elimination sequence shown in step S5 of FIG. 19 will now be explained, this sequence being shown in detail in FIG. 22. A step S1 lowers the thermal head 25, thus allowing the winding of the ribbon in the cassette (see Figures 5 to 8). Then a step S2 moves the carriage 22 of a character step in the direction A1 without actuating

the thermal head 25, and a step S3 raises the thermal head.

  Thanks to these steps, the slack is removed and the ribbon

  is maintained under a predetermined voltage.

  Now, the tape mode change routine of step S8 of Fig. 21, the subprogram whose details are shown in Fig. 23, will be explained. First, a step S1 reverses the bit of Ribbon mode flag in RAM TRAM, thus switching from non-corrective mode to corrective mode, or vice versa. A step S2 determines the mode thus converted and, if it is the non-correcting mode (NO branch), the program proceeds to a step S4 to introduce the power-up routine illustrated in FIG. against, if it is corrector mode (YES branch), a step S3 establishes the left and right margin positions LM2, RM2 for a correction tape, as explained with reference to FIG. 20, in the memory fast TRAM, in which positions LM1, RM1 are normally established. Then the program proceeds to the power-up subroutine at a step S4, during which slack is removed and the carriage is moved to the appropriate left margin position LM1 or LM2 depending on the type of ribbon, such as explained previously. It is also possible to move the carriage to a margin position determined by the operator. In addition, the ribbon mode need not be established by key input, but it can be determined by the subprogram shown

  in Fig. 25 in accordance with an automatic discrimination performed by the sensor 29 shown in Fig. 5.

  In addition, the presence of the two print intervals, explained above, can lead to erroneous entry of the margin position by the operator, but in this case an alarm can be given, or the position of the margin can be be moved until it is correct,

  without taking into account the erroneous input made by the operator.

  The printing / correction mode change routine of step S7 of Fig. 21, subroutine whose details are shown in Fig. 24, will now be explained. A corrugated tape must be loaded to change the modes. printing / correction. Therefore, a step S1 determines the mode flag of the ribbon and, if an uncorrected ribbon cassette is identified, a step S2 triggers a snorer or a

  acoustic alarm, or a display, because the order 10 introduced for a change of mode is not valid.

  On the other hand, in the case where the step S 1 identifies a correction tape cassette, a step S3 reverses the correction flag in the random access memory TRAM, thus causing a transition from the print mode to the correction mode, or vice versa. In addition, the position then occupied by the carriage is stored in the RAM TRAM. Step S4 then determines the correction flag thus reversed and, if it is in the repositioned state indicating the print mode, the program proceeds to step S5 to bring the carriage into the aforementioned mode setting position. printing. On the other hand, in the case where step S3 sets the correction flag to indicate the correction mode, the program proceeds to a step S6 to bring the carriage into the setting mode correction position (see FIGS. 14 and 15). . Then a step S7 brings the carriage into a carriage position before moving the carriage in step S5 or S6, or to a next printing position. In this printing / correction mode changing routine, slack removal is not performed, but it is also possible to carry out this removal in response to the input of a change-over signal. print mode /

  correction, for example after step S7 of FIG. 24.

  The printing sequence of step S5 of FIG. 21 will now be explained, which sequence is shown in detail in FIG. 25. In the present embodiment, the information transmitted may be based on data.

  any such as characters, drawings, images, symbols or combinations of these data.

  The program proceeds to step S5 under the effect of a print command issued by the print command key PRKY, but this print order can be generated for each character or each word or line. The movement of the carriage is controlled, for example, by the motor drive circuit 105 shown in Fig. 18, but the motor, etc., are excluded from the explanation for clarity bus. Referring to Fig. 25, a step S1 moves the carriage to the print start position and a step S2 lowers the thermal head 25. A step S3 determines the position of the ribbon mode flag and, in the case of the With corrective tape, the program proceeds to a step S4 to establish the carriage speed for the non-corrective mode by means of a gear table in the ROM. Then, a step S5 accelerates the carriage to the speed thus established, for example 18 characters per second. A step S6 sets the heating condition for the non-corrective mode by transmitting commands to the controller 109, to adjust the voltage and current, and it also sets the heating time for the non-corrective mode, for example a heater. for 1.1 seconds. Step S7 actuates the thermal head according to the heating condition to effect printing. Then a step S8 raises the thermal head 25 and a step S9 flushes, or a predetermined movement, the carriage. This flush allows the operator to observe the printed character and also allows the indexing mark 30a to indicate the next printing position. The sequence ends in this manner and the carriage position, in this state, is the print standby position in the non-corrective tape mode. On the other hand, if step S3 identifies the correction tape mode (YES branch), the program jumps to step S10 to check the correction flag. If the flag is repositioned, indicating the print mode, the program proceeds to a step S11 to set the carriage speed in corrective tape mode from a speed table in the ROM. Step S12 accelerates and drives the carriage to the speed thus set, e.g. 18 characters per second. Then a step S13 sets the heating condition for the corrective ribbon mode using the voltage, the current and the heating time. Step S14 operates the thermal head using this condition to perform

  an impression, and a step S15 raises the thermal head.

  Step S16 performs a chase to complete the sequence.

  On the other hand, if step S10 identifies that the correction flag is set, indicating the correction mode, the program proceeds to step S17 to set the carriage speed for the correction mode. A step S18 accelerates and controls the carriage at the speed thus established, for example 10 characters per second. A step S19 then sets the heating condition for the correction mode, and a step S20 actuates the thermal head to perform the correction operation, for example by heating for 0.4 ms. The carriage speed and the heating condition in the correction mode are chosen to be different from those existing in the other modes in order to perform the correction operation. A step S21 lowers the carriage to the up start position and moves it a distance 1 (see Fig. 26) to change the detaching position of the ribbon. This change allows the ribbon to cool, thereby performing the correction operation. Then, a step S22 raises the thermal head and a step S23 flushes in the same manner as in the non-corrective tape mode or in the correction tape mode. In said non-correcting or correcting tape mode, the indexing mark 30a indicates the next print position after the flush of the step S9 or S16, but in the case of the step S24, the indexing mark indicates the next printing position, because the carriage stops in a different position than it occupies in the non-corrective tape mode, due to step S21. Therefore, the carriage is returned to a distance corresponding to 64 pulses in step S21, so that the carriage is stopped in the same position as in the non-corrective tape mode. In this way, the indexing mark 30a is moved to indicate the next printing position, regardless of the ribbon mode or whatever the mode,

in printing or correction.

  FIG. 26 shows the relationship between the index mark 30a, the thermal head 25 and the printed character 20, the solid line letter 'H' indicating a character already printed, while the letter 'H' in broken lines indicates a The distance between the indexing mark 30a and the thermal head 25 is obviously constant, regardless of the mode of the ribbon, or the mode of printing or correction (see Figure 3). Dotted index mark indicates a desired position corresponding to the next print position, while a bold index mark indicates the rising position after the correction, n is the distance between the position of the the thermal head 25 at the end of printing and the center of the next printed character Thus, in the printing mode with the non-corrective or correction tape, a flush of (m + n) is carried out to bring the marker indexing s the next printing position (step S9 or S16 in Fig. 25). In the case of correcting mode, the carriage is already advanced by 1 (figure 26), as explained

  previously in connection with step S21 of FIG.

  The quantities n, m and 1 may have arbitrarily related quantities. Steps S21, S23 and S24 in FIG. 25 cause cart movements of the order of l (S21) + (n + m) (S23) -S24), but as can be understood from FIG. After Fig. 26, it is also possible to advance the carriage by 1 after printing (S21) and to return the carriage to a distance at 1 (m + n). The present embodiment utilizes heating time regulation, but it is obviously

  it is also possible to regulate the above-mentioned voltage VH.

  Although the foregoing embodiments are limited to ink ribbon structures, the present invention is not limited to such embodiments, but may also be applicable to an inking sheet or wide band used, for example, in printers

line by line.

  In addition, the recording medium is not limited to the recording paper described in the previous embodiments, but it may be, for example, a transparent plastic sheet used.

for overhead projectors.

  In addition, the heating means are not limited to the thermal head described in the preceding embodiments, but they can be suitably composed other means, such as a light lamp.

infrared or a laser beam.

  In the previous embodiments, there is described a so-called serial printer, in which a thermal head reciprocates along a recording sheet, but the present invention can also be applied to a so-called line printer. Line, wherein heating means, such as a thermal head, are arranged over the entire recording width. In addition, although the foregoing embodiments utilize an ink ribbon cassette which encloses an ink ribbon and which can be removably mounted on the apparatus, the present invention is not limited to such a case. For example, it is obviously possible to directly load an ink sheet

  wound on a reel or formed into a roll.

  In addition, the foregoing embodiments are limited to a structure in which an ink ribbon cassette performs reciprocating motion, but the present invention may also be applied to other

  types in which the ink ribbon cassette is fixed, for example.

  The recorded image can consist of

  characters, numbers, figures, drawings and the like.

  Although the aforementioned embodiments show examples of correction of the images recorded by peeling, the present invention can be applied to an ink sheet for lap correction, which means that the correction is carried out by overlapping

recorded images.

  Further, in the previous embodiments, the cooling of the ink ribbon or sheet after heating is spontaneously performed, which results in retarding the delamination, but the present invention can also use forced cooling, for example for example by contacting a metal such as iron or aluminum with the sheet or ink ribbon, or by blowing cold air onto the sheet or ribbon. As explained in detail above, the present invention enables an image to be recorded on a recording medium in accordance with recording information, as well as to correct a recording.

wrong if necessary.

  It goes without saying that many modifications can be made to the cassette and the apparatus described and shown without departing from the scope of the invention.

Claims (17)

  1. Sheet cassette or ink ribbon mountable to a recording apparatus capable of image recording and image correction on a recording medium (12) using a recording ink sheet or ribbon ink (3a), characterized in that it comprises an ink-carrying sheet or ink ribbon (1), a first winding part on which the ink ribbon can be wound, a second part of on which the ink ribbon can be wound, a region of application of a recording action disposed along a transport path of the ink ribbon between the first and second winding portions, wherein the ink ribbon the means for changing the transport path of the ink ribbon from the first winding portion to the second winding portion is subjected to the recording action for performing the recording, a first portion of r receiving a driving force for receiving a driving force for moving   automatically the change means, and a second driving force receiving portion for receiving a driving force for transporting the ink ribbon from the first winding portion to the second winding portion.   2. Ink ribbon cassette according to claim 1, characterized in that the means of change control the moment at which the separation takes place between   the ink ribbon and the recording media after heating.   An ink ribbon cassette according to claim 1, characterized in that the ink ribbon is adapted to record an image on the recording medium and to effect correction of the recorded image when necessary. .   An ink ribbon cassette according to claim 1, characterized in that the ink ribbon carries ink carried on the recording medium for recording an image thereon, and a layer (3a). ) to take off the recorded image on the recording medium.   An ink ribbon cassette according to claim 1, characterized in that the ink ribbon is a   self-correcting tape used in common for recording an image and for correcting an image.   The ink ribbon cassette according to claim 1, characterized in that the first receiving part of a driving force reviews the force   from the side of the recording apparatus and in accordance with the image correction information.   7. Ink ribbon cassette according to claim 1, characterized in that the first part of the reception of a driving force receives the force   driving the recording apparatus in accordance with the image information.   An ink ribbon cassette according to claim 1, characterized in that the changing means comprise a lever (62) for changing the instant   detachment between the recording medium and the ink ribbon after recording.   9. ink ribbon cassette according to claim 1, characterized in that the means for changing comprises a lever for holding the ink ribbon   in contact with the recording medium.   A recording apparatus on which an ink ribbon cassette (50) comprising a sheet or an ink ribbon (1) can be mounted and which can perform image recording and image correction. on a recording medium (12), the ink ribbon cassette being mounted, characterized in that it comprises a portion (28) for mounting an ink ribbon cassette for the removable mounting of the cassette, the latter carrying a sheet or an ink ribbon. (12) carrying ink, a first winding portion on which the ink ribbon can be wound, a second winding portion on which the ink ribbon can be wound, an application area of an ink roll. recording arranged along a transport path of the ink ribbon between the first and second winding portions, the ink ribbon being subjected. to the recording action for recording, means for changing the transport path of the ink ribbon leading from the first winding portion to the second winding portion, a first force receiving portion; for driving a driving force to automatically move the change means, a second driving force receiving portion for receiving a driving force for transporting the ink ribbon of the first portion of the winding at the second winding portion, recording means for acting on the ink ribbon, placed in the area of application of the recording action for the ink ribbon cassette when the cassette is mounted on the part mounting means, first transmission means for transmitting the force of the first means for receiving a driving force of the ink ribbon cassette image-correcting information when the cassette is mounted on the mounting portion, and second force-transmitting means for transmitting the force to the second receiving portion of a driving force of the ink ribbon   when this cassette is mounted on the mounting part.   The recording apparatus according to claim 10, characterized in that the change means controls the moment of disbond between the ink ribbon and the recording medium after heating. The recording apparatus according to claim 10, characterized in that the ink ribbon is adapted to perform image recording on the recording medium and to perform a correction of the recorded image when necessary. 13. Recording apparatus according to claim 10, characterized in that the ink ribbon carries an ink carried on the recording medium to record the image thereon, and a release layer o10 for detaching the image recorded on the recording medium. A recording apparatus according to claim 10, characterized in that the ink ribbon is a self-correcting tape commonly used for image recording and image correction. Recording apparatus according to claim 10, characterized in that the changing means comprise a lever for changing the moment of detachment between the recording medium.   and the ink ribbon after recording.   Recording apparatus according to claim 10, characterized in that the changing means comprise a lever for maintaining   the ink ribbon in contact with the recording medium.   An ink ribbon cassette mountable to a recording apparatus capable of recording an image and image correction on a recording medium (12) by means of a sheet 30 or an ink ribbon bearing ink, characterized in that it comprises an ink-bearing ink ribbon (1), a first winding part on which the ink ribbon can be wound, a second winding part on which the ink ribbon can be wound, a region for applying a recording action placed along a transport path of the ink ribbon between the first and second winding portions, wherein the ink ribbon is subjected to the recording action for recording, and means for controlling, after recording, the detachment conditions in which the ink ribbon has passed the application area of an action of recording and the medium   registration are detached from each other.