DE3726007C2 - Ribbon cartridge and recording apparatus using the same - Google Patents

Description

The invention relates to an ink ribbon cassette according to the preamble of claim 5 for use in an electronic typewriter, in a facsimile machine, home computer, word processor or the like. is suitable, and on a recording device according to the preamble of claim 1, in which the This ribbon cassette can be used.

The invention further relates to an ink ribbon cassette able to use a ribbon that is needed if necessary allows the recording to be corrected, and on a recording device, which this cassette is structurally can be incorporated.

A conventional recorder capable of the recording in accordance with a correction To correct incorrectly, previously had to be with a correction tape in addition to a recording ribbon become.  

With such a correction, the recording color tied back from its recording position whereupon the correction tape in the recording position brought with the help of an upward or downward rotation becomes. Based on these facts, the conventional up drawing device inevitably large and voluminous.

In the preamble of claims 1 and 5 US 43 96 308 was therefore a recording device to create and correct records under Ver using a correction device between a recording position and a correction position shiftable ribbon proposed, one over a first drive driven ribbon feed device and one via a second drive to a recording towards and away from this displaceable printhead having. Furthermore, this is state of the art a third drive is provided, by means of which the Cor rectifier between the recording and the Cor rectification position is shiftable. Although this on drawing device has a compact structure, it has the Disadvantage that three different sources of drive are provided to the ribbon feed device To move the printhead and the correction device.

The invention is therefore based on the object to create a drawing device or a ribbon cassette, by means of which the correction device with little device engineering effort can be operated.

This object is achieved by the in claims 1 and 5 respectively specified features solved.

Advantageous developments of the invention are the subject of subclaims 2 to 4 and 6 to 8.

The invention will be described with reference to the drawings explained. Show it:

Figure 1 is a cross section of a correctable Farbban the.

Fig. 2 is an oblique view of a typewriter in an embodiment of the invention;

Figures 3 and 4 oblique views of a recording device according to the invention.

Figures 5 and 6 are top views of a head swivel and ribbon winder mechanism;

Figures 7 and 8 are side views of the head pivot mechanism;

Figure 9 is a perspective view of a cartridge according to the invention for a Corrected capable ribbon.

Fig. 10 is a plan view of the inside of the ink ribbon cassette;

FIG. 11 shows a representation similar to FIG. 10 of an ink ribbon cassette in another embodiment according to the invention;

Fig. 12 to 15 plan views for explaining a switching process;

FIG. 16A, 16B, 17A and 17B are enlarged schematic depicting lungs to the function of the recording apparatus according to the invention;

FIG. 18 is a block diagram of an output unit;

FIG. 19 is a flowchart of a device start-up sequence of the output;

Fig. 20 is a diagram illustrating the recording output areas corresponding to various types of an ink ribbon;

Fig. 21 is a flow chart of a key operation sequence;

Fig. 22 is a flow chart of a sequence for eliminating slack in the ribbon;

Fig. 23 is a flow chart of a sequence for a ribbon changing operation;

Fig. 24 is a flow chart of a sequence for changing the recording and correcting operation;

Fig. 25 is a flow chart for a record / correction sequence;

Fig. 26 is a diagram showing the positional relationship of a print position of the head and index marks.

The invention is based on preferred embodiments Men, which are shown in the drawings, in detail explained.

A ribbon is first described. This ribbon is a so-called self-correction ribbon, which is currently is not just a record in accordance with to produce a record command, but also the on drawing by removing or removing the on the record color or ink yaw.

The ink ribbon 1 shown in cross section in FIG. 1 consists of a substrate 2 , a central ink layer 3 a and a transparent cover layer 3 b located thereon. As will be explained in more detail, the central color layer 3 a is formed from a thermoplastic resin, which is a coloring material, for. B. carbon paint or dyes, while the top layer consists of a transparent, wax-like resin.

The substrate 2 can be made from a film or paper known per se. Preferred examples of this are plastic films with a relatively high heat resistance, such as polyester, polycarbonate, triazetyl cellulose or polyimides, or papers, such as cellophane, paper treated with sulfuric acid or condenser paper. The thickness of the substrate 2 is preferably in the case of a Thermokop fes as a heat source for heat transfer in the range of 1-15 microns, but the thickness is not limited if a heat source is used, which is able to selectively the color layer heat, e.g. B. a laser beam.

In order to form a record, the central color layer must be easy to remove from the substrate without difficulty if a long period of time between the application of thermal energy to the central color layer 3 a until the substrate 2 is separated from a recording material, such as recording paper or a plastic film for a writing projector (overhead projector) is present, that is, if the ink ribbon 1 and the recording material are held together when heat is applied, and if the ink ribbon 1 is cooled considerably by the movement of the thermal head.

For this reason, the central color layer 3 a contains not only a heat-meltable binder such as natural wax, petroleum or synthetic paraffin, but also oil-containing substances such as polyolefin, polyester, epoxy, polyurethane, polyacrylate, polyvinyl chloride -, cellulose, polyvinyl alcohol, petroleum, phenol, polystyrene, polyvinyl acetate resin, an elastomer such as natural, styrene-butadiene, isoprene or chloroprene rubber, polyisobutylene, polybutylene, plasticizers, mineral or vegetable oil, in such a way that a melting temperature of about 50 ° -100 ° C is present in the entire color layer, including the coloring material and other possible additives.

For the transparent cover layer 3 b, it is necessary that it is softened when heated by the thermal head and adheres firmly to the recording material, and it is necessary that it mixes difficult with the central ink layer 3 a in the molten state. For this reason, the heat-fusible binding material should preferably contain the above-mentioned resins in an amount of at least 50%, while the above-mentioned waxes, plasticizers, mineral or vegetable oils have a melting temperature of approximately 50-100 ° C. in the entire transparent layer should have. Also, to improve the size reduction of the cover layer 3 b, it can be formed in the form of dots, beads or can be configured with surface irregularities.

The thickness of the central ink layer 3 a is preferably in the range of 0.5-10 μm, while the thickness of the entire heat transfer ink layer 3 , which comprises the central ink layer 3 a and the transparent cover layer 3 b, is preferably in the range of 2 Is -20 µm.

Various dyes and pigments known in the printing field can be used as the coloring material. The proportion of these color materials in the central layer 3 a is advantageously 1-80%. The middle layer 3 a and the top layer 3 b may also contain additives, such as dispersants or fillers made from a metal powder, powdery inorganic material or metal oxide powder.

The middle layer 3 a and the top layer 3 b are preferably formed from materials without mutual solubility, but the separation from one another is nevertheless made possible by the difference in viscosity in the molten state, even if the materials are mutually soluble.

Below is an electronic typewriter as one Example of a recording device capable of one Record in accordance with a record area failed to achieve and a false record with Hil to correct the ribbon explained above, be wrote.  

In the following embodiment, the recording by depositing color (ink) on the record material and the correction of a false record by removing the deposited paint light by removing the ribbon from the recording material inside half a short time after the application of thermal energy on the ribbon or ribbon after a cooling step for this being moved away.

Fig. 2 is an oblique view of the exterior of a typewriter T, which is an information output device in which an embodiment according to the invention is used.

Fig. 2 shows a platen 10 , a recording sheet 12 , a housing 13 , a power switch 14 for switching on and off the power supply, a keypad 15 and a hood switch 16 , which is actuated by a cover 13 a, the open state or determines the closed state and, when the cover 13 a is open, generates a signal to move the ink ribbon to a predetermined position and to lock the keypad. A mode key MOKY is used to set various modes, such as tape modes, which will be discussed later. A PRKY print command key delivers a print command. The typewriter T is provided with a printing unit, an input unit, a display, a control unit and an external input / output interface, but the input unit and the display can of course be omitted in the embodiment in question.

FIGS. 3 and 4 of the invention show in perspective views a Aufzeich drying apparatus according to.

The recording sheet 12 is carried by the platen roller 10 and held in printing system on a (not shown) part of a sheet transport roller 17 by means of a pinch roller 18 . The shaft 17 a of the sheet transport roller 17 carries a gear 19 , which is connected via a reduction gear 20 with a sheet feed motor M1, which rotates the sheet transport roller 17 to advance the recording sheet 12 . The platen roller 10 holds the recording sheet 12 in place when a thermal head 25 performs printing by printing between the ink ribbon and the recording sheet.

The reciprocation of a carriage 22 is discussed in detail below.

A in front of the platen 10 and parallel to this arranged rod 21 carries a carriage 22 which is movable in the direction of the double arrow A. The carriage 22 can reciprocate along the conveying path S of the recording sheet 12 .

A belt runs between two pulleys (not shown), part of which is attached to the carriage 22 . The pulleys are connected by gears (not shown) to a carriage motor M2 which, via the pulleys and the belt, causes the carriage 22 to move back and forth in the arrow directions A along the rod 21 . An end position sensor 23 , which detects the position of the carriage 22 , is arranged at a lateral end of the device near an initial position.

On the carriage 22 , a head support 24 ( Fig. 4) is mounted, which is pivotable about the rod 21 and equipped with a heat sink (heat sink) 26 , to which (the) the thermal head 25 is attached. About an integrated guide piece 22 a, the carriage 22 of a rack 27 , which is provided at its opposite ends with projections 27 a and 27 b, stored and guided.

Furthermore, a carriage plate 28 is provided on the carriage 22 for receiving an ink ribbon cassette 50 ( FIG. 9), the carriage plate 28 being equipped with a sensor 29 which detects the presence or absence of the cassette 50 , its type and the end of the ink ribbon 1 . The carriage plate 28 carries a displaceable lever 30 which along a guide 28 d in a perpendicular to the platen 10 Rich device C movable and with a held at the heat sink 26 NEN joint 31 is in communication. Pivotal movement of the heat sink 26 in a direction B to the platen roller 10 toward or away from the leads to a movement of the lever 30 in a direction C to the roller 10 toward or away from this. The lever 30 is provided with an index mark 30 a, which enables the operator to visually determine the next printing position. At its rear end, the lever 30 is equipped with an abutment portion 30 b, the position at to with a selection lever 62 of the cassette 50, will be followed by yet been received, this lever 62 lifts the platen 10 back.

In the embodiment in question, as has been explained, the index mark 30 a on the lever 30 which is close to the thermal head 25 and is concerned with the control of the removal or Wegbe movement state of the ribbon, so that the thermal head is only for position of the index mark 30 a must be moved to a recording to be performed on this position of the mark 30th The presence of the index mark does not reduce the speed of recording and does not give rise to any other disadvantages, such as e.g. B. Ge noise.

In the following, the process of releasable attachment of the cassette 50 to the carriage plate 28 is discussed, which is equipped with fixed pins 28 a and 28 b on its upper surface and with a resilient hook 28 c on a lateral surface. The cassette 50 can be attached lös bar to the carriage plate 28 by engaging holes are brought to engage h and 52 i of a lower cassette portion 52 of the cassette 50 (Fig. 10) with the fixed pin 28 a, 28 b 52, and a latching part 52 j of the lower part of the cassette 52 is caught by the resilient hook 28 c. Of course, the carriage plate 28 can accommodate not only a cassette with a recording / correction ribbon, but also a conventional cassette with a single color ribbon.

The switching or reverse / forward displacement mechanism for the thermal head 25 will now be described.

Figs. 5-8 show an embodiment of a mechanism rungs- to the thermal head 25 in a touch or Vorverlage as well as to bring about a separation or rear displacement position and to wind the ribbon.

The carriage 22 is provided with a head-switching motor M3, the rotation (not shown) through gears and a reduction gear is a rotation of an associated control cam 32 transmitted to a gear 32 45th A protrusion 32 is b det ausgebil on the control cam 32 and comes with an existing on the carriage 22 stop 33 for abutment to the rotation of the cam plate 32 to be boundaries, when it clockwise in a direction D1 (Fig. 7) or counter-clockwise is rotated in a direction D2 ( Fig. 8). The stop 33 consists of an elastic material, such as rubber, in order to reduce the contact shock with the cam disk 32 .

On the carriage 22 is a pin 35 ( Fig. 8) rotatably a forward / reverse lever 34 for moving the thermal head to. Between projections 34 a and 34 b of this lever 34 , a torsion spring 36 is held in the tensioned state. The forward / reverse lever 34 carries a roller 37 at an end portion rotatable bar. A head return spring 38 is disposed between a spring bearing 24 a of the head support 24 and a spring bearing 22 b of the carriage 22 to the head carrier 24 urge in a direction B2 of the platen 10 (Fig. 6 and 8). The pressing force of the head return spring 38 is supported by a bearing part 24 b of the head support 24 via a leg 36 a of the torsion spring 36 to the forward / reverse lever 34 telt Transfer on. Consequently, this lever 34 is pushed by the head return spring 38 in a direction E2 from the platen roller 10 ( FIG. 8), while the roller 37 which is sensitive to the forward / reverse lever 34 is held in pressure system with the control cam 32 .

As a result, the thermal head 25 is pivoted toward the platen roller 10 by the rotation of the head motor M3.

In the following, a winding mechanism for the ink ribbon 1 is explained in more detail.

The carriage 22 is provided with a take-up shaft 39 which rotatably supports a take-up lever 40 and a take-up clutch 41 arranged above it. Furthermore, the take-up lever 40 rotatably supports a take-up gear 42 , a tooth part (not shown) of the take-up clutch 41 forming a sun gear, while the take-up gear 42 represents a planet gear.

In a guide piece 22 c of the carriage 22 , a winding switch lever 43 is movably received in the directions G1 ( FIG. 5) and G2 ( FIG. 6), one end of this lever 43 being in engagement with the winding lever 40 . Between a Fe derlager 40 a of the take-up lever 40 and a spring bearing 22 d of the carriage 22 , a take-up switch lever spring 44 is arranged which loads the take-up lever 40 in a direction F1 ( FIG. 5). The force of this winding lever spring 44 is transmitted through the winding lever 40 to the winding lever 43 to Bela in a direction G1 and load in pressure system with the heat sink 26 . The Aufwickelkupplung 41 can come with a hub 41 a star hen shipping, the handle having a winding hub 55 of the cassette 50 to the A.

Between the hub star 41 a and a (not shown) gear of the take-up clutch 41 is also a (not shown) friction clutch, which carries the rotation of the (not shown) gear on the hub star.

Below are the functions of a thermal head system (forward position), a head separation (backward te position) and a tape winding in the above Mechanism described.

In FIGS. 5 and 7, a head support state (vorverlager th position), wherein the ink ribbon can be wound. The Kopfumschaltmotor M3 is operated in the clockwise direction to the cam disc 32 in a direction D1 (Fig. 7) to be rotated by the reduction gear 45, so that the projection 32 b of the cam 32 with the stop 33 comes into contact.

The rotation of the cam gear 32 in the direction D1 (clockwise in Fig. 7) increases its radius at the contact point with the forward / reverse lever 34 befindli chen roller 37, whereby the lever 34 counter-clockwise sense in the direction E1 (Figure . 7) against the force of the head return spring rotates 38th This rotation of the forward / backward lever 34 is transmitted through the leg 36 a of the torsion spring 36 , which is provided on the lever 34 , to the contact part 24 b of the head carrier 24 , in order to counterclockwise in the direction B1 ( Fig. 7th ) to pivot. Accordingly, the thermal head 25 attached to the heat sink 26 on the head support 24 is pressed against the recording sheet 12 on the platen 10 . In this way, in the writing process by the thermal head 25, this is held in contact with the recording sheet 12 carried by the writing roller 10 .

After the thermal head 25 has been brought into contact with the recording sheet 12 or the platen roller 10 , the radius of the control cam 32 increases further, so that the forward / reverse lever 34 continues counterclockwise in the direction E1 ( FIG. 7) is rotated. In this state, the movement of the head carrier 24 is limited because the thermal head 25 is already in contact with the recording sheet 12 or the platen roller 10 . Consequently, the movement of the leg 36 a of the torsion spring 36 , which is in contact with the contact part 24 b of the head support 24 , is limited. Thus causes the rotation of the forward / reverse lever 34 in the counterclockwise direction (direction E1 in Fig. 7), that the torsion spring 36 b of the projection 34 leaves the lever 34, so that an additional spring force is chert vomit in the spring 36. The spring force of the torsion spring 36 is now transferred to the contact part 24 b of the head support 24 because the projection 34 b on the lever 34 is no longer in contact with the leg 36 a of the torsion spring 36 , so that the thermal head 25 against the recording sheet 12 or the platen roller 10 is pressed.

If the projection 32 b of the control cam 32 is in contact with the stop 33 , as shown in FIG. 7, then the thermal head 25 is pressed against the platen roller 10 at a predetermined pressure.

In the following, the function of the ribbon winding mechanism for the ribbon 1 will be explained.

When the heat sink 26 moves on the head carrier 24 in the direction B1 toward the platen roller 10 , the winding lever lever 43 moves by the force of the winding lever lever 44 in the direction G1 ( FIG. 5). Accordingly, the winding lever 40 rotates in the direction F1, so that the take-up gear 42 located on the lever 40 with the teeth 27 c is meshed to the rack 27th When the thermal head 25 is pressed against the platen roller 10, then through the engagement position of the winding gear 42 with the rack 27, the movement of the winding lever 40 is limited so that the Aufwic kelzahnrad 42 to the rack 27 is loaded by the take-up lever spring 44 toward. Thus produces a movement of the carriage 22 in the recording direction A1 rotation of the winding gear 42 in the clockwise direction (direction H), and this rotation is gene on the Aufwickelkupplung 41 übertra, so that the hub star 41a rotates counterclockwise in the direction I.

Thus, in the assembled state on the carriage plate 28 of the cassette 50, the ink ribbon 1 in the cassette can be wound up by a grip on the winding hub 55 with the hub star 41 a.

A separation process (backward displacement) of the thermal head 25 from the platen roller 10 is explained below. FIGS. 6 and 8 show the separate backward displaced state of the head, wherein a winding of the ink ribbon is not possible.

The head shift motor M3 is driven in the counterclockwise direction to the cam disc 32 to rotate in the direction D2 (Fig. 8) by the reduction gear 45, so that the projection 32 b of the cam 32 with the stop 33 comes into abutment. This rotation of the cam 32 in the direction D2 reduces its radius at the point of contact with the roller 37 present on the forward / reverse lever 34 . Thus, by the force of the head return spring 38, the lever 34 rotates in the direction E2 ( Fig. 8) to move the head carrier 24 in the direction B2, so that the heat sink 26 and the thermal head 25 held on the head carrier 24 , are separated from the platen roller 10 . The movement of the heat sink 26 in the direction B2 also moves the winding lever lever 43 in the direction G2 ( FIG. 6), so that this lever rotates the winding lever 40 in the direction F2 against the force of the winding lever spring 44 , to loosen the winding gear 42 from the rack 27 .

In this non-recording state, in which the thermal head 25 is separated from the platen 10 , the Na benstern 41 a of the take-up clutch 41 does not rotate when the carriage 22 is moved in the directions A1 or A2 along the rod 21 , so that the ribbon is not wound up. Thus, a winding process does not occur on the ink ribbon 1 , even in the case of a separation of a switching lever 62 to be explained and a removal or detaching roller 54 from the platen roller 10 with reference to the thermal head 25 , which will be discussed in more detail below.

The spring force of the head return spring 38 is chosen so that it is insufficient for tensioning the torsion spring 36 , but is able to work against the winding lever lever 44 so that the positions of the Thermokop fes 25 and the winding gear 42 by the Radius of the control cam 32 can be determined.

The head switch motor M3 can be operated for a period of time necessary and sufficient for the rotation of the cam 32 , or can be stopped when a current change in the motor M3 is detected when the projection 32 b touches the stop 33 , or it cannot be stopped by one sensor shown, which detects the position of the cam 32 can be controlled.

The thermal head 25 and the switch lever 62 and the detaching roller 54 are in the event of a return of the carriage 22 to the starting position, the presence of a distance of predetermined size in the record to be produced (so-called "skipping" or sheet change) or a partial record separated from the platen, so that unnecessary consumption of the ribbon can be prevented because it is not wound up in the above cases.

With reference to FIGS. 9 and 10, the ribbon cassette 50 will be explained, the ribbon 1 accommodates in a housing Ca, which consists of a lower cassette part 52 and an upper cassette part 63 and is releasably held on the carriage plate 28 .

The ribbon 1 is wound on a core 51 placed on a projecting hub 52 a of the lower cassette part 52 and is held by rollers 53 b, 53 c and 53 d rotatably held on pins 52 b and 52 d of the cassette part 52 and along a ribbon Viewing window 52 c guided, whereupon the tape 1 reaches ge through a recess 52 e to the outside of the housing Ca, then is passed through the release roller 54 , re-enters the housing Ca through an opening 52 l and is finally wound up by the winding hub 55 .

When the cassette 50 is mounted in a predetermined position on the carriage plate 28 , the recess 52 e is in a position corresponding to the thermal head 25 , so that the ribbon 1 exposed outside the cassette case Ca by the thermal head corresponding to one of the recordings Generates heat, can be heated. The heat generation is caused by a heat generating part 25 a ( Fig. 13), which consists of several heat-generating elements. The ribbon 1 is pressed to the roller 53 b by a compression spring 56 , which is provided on the lower cassette part 52 and to prevent damage to the ribbon 1, a felt cushion 56 a.

A tension spring 57 loads the ink ribbon in the direction J ( FIG. 10) in order to absorb a sag of the ink ribbon. This spring 57 is held on the lower cassette part 52 and elastically loads the ink ribbon 1 upstream of the rollers 53 c and 53 d with respect to the ink ribbon movement direction. If the ink ribbon 1 is slack due to a change in its be influenced by the movement of the release lever 58 and the release roller 54 course, this slackness can be instantaneously absorbed by the elastic force of the tension spring 57 because. This spring 57 is provided with a felt cushion 57 a on its surface in contact with the ribbon to prevent possible damage. This felt pad can be replaced by a suitable coating formed on the surface of the tension spring 57 .

The release lever 58 is displaceable in the directions C1 or C2 along a lateral end face 50 a of the cassette 50 , in which the opening 52 l is formed. Specifically, the lever 58 is cut at its front end by an Endab 63 a of the upper cassette part 63 and by an end section (not shown) and a (not shown) guide piece of the lower cassette part 52 , while at its rear end the guide by a downward bend 63 b of the upper cassette part 63 and an upward bend 52 m of the lower cassette part 52 is effected. The above-mentioned peeling roller 54 is a rotatably supported on a front end of the release lever 58 angeord Neten shaft 54th The release lever 58 is also provided with a front recess 58 a and a rear recess 58 b, wherein in the front recess 58 a forms a projection 52 f on the lower housing part 52 and bel between this projection 52 f and the release lever 58 a Return spring 59 is arranged along a guide rod 58 c. Accordingly, the release lever 58 is constantly dig dig by the spring 59 in the reverse direction (direction C2). In the rear recess 58 b, a sliding piece 60 is arranged, which can be moved along a guide 58 d with respect to the release lever 58 . In the recess 58 b is located between the lever 58 and the slider 60 has a Schrau bendruckfeder 61 of a guide rod 58 e, the 58 is bel on He fixed and a guide rod 58 f, the piece on the slide is determined along 60 so that the slider 60 is loaded backwards in the direction C2 and is stopped by a stop 58 g of the guide 58 d.

The above-mentioned change-over lever 62 lies with an end piece 62 a at the rear end 60 a of the slider 60 and is shown in FIG. 10 slidable in the direction K, as well as pivot in the direction L between the upper and the lower CASSETTE tenteil 63 and 52 . At its inner end, the switch lever 62 is provided with a switch elbow 62 b, which comes with the projections 27 a and 27 b located on the toothed rail 27 of the device main part for pushing to the switch lever 62 in one of the directions K. move. The range of movement of this lever 62 is limited by the lateral edges of the opening 52 g. In addition, the lever 62 can pivot about a shoulder 62 c which engages with a slot 63 c formed in the lower and upper cassette parts 52 and 63 .

In the vicinity of the end facing away from the angle piece 62 b, the lever 62 is provided with a nose 62 d, which prevents unexpected or unwanted transverse movement of the lever 62 . However, this nose 62 d has inclined inclined surfaces 62 d1 in order not to hinder the transverse movement of the lever 62 in the event that the changeover angle piece 62 b with the projections 27 a or 27 b comes to rest. As a result, the nose 62 d can only move away with a slight effort via the roller 52 k when the lever 62 moves.

In the case of the cassette 50 explained above, the projection 27 b of the device with the switching angle piece 62 b comes to rest to move the lever 62 to the left, so that its end piece 62 a protrudes beyond the side face 50 a of the cassette and into a position is brought in which it is able to meet with the plant part 30 b. If the ver slidable lever 30 is moved by the rotation of the head motor M3, as already explained, towards the platen 10 , the system part 30 b and the end piece 62 a meet each other, so that the lever 62 is moved towards the platen 10 . Against the force of the return spring 59 , the changeover lever 62 presses the release lever 58 in the direction C1 toward the platen roller 10 . After the release lever 58 on the ink ribbon 1 and the recording sheet 12 with the platen roller 10 is in contact, the slider 60 is pressed in the direction C1 against the force of the compression spring 61 to the platen roller, the lever 58 by the force of the water Spring 61 is held with the platen 10 in printing system.

The recording sheet 12 and the ribbon 1 run Lich after heating together to the release roller 54 and who then separated from each other.

In the embodiment in question, the switching lever 62 brings the release roller 54 with the platen roller 10 into contact with only a slight pressure by the action of the spring 61 . As a result, the peeling roller 54 contacts the platen 10 with a stable, elastic force, so that the recording is contaminated by the peeling of the ink or by an incorrect tape feed, e.g. B. wrinkling or misaligned feed is prevented.

On the other hand, if the projection 27 a on the device with the switching elbow 62 b comes to rest, the switching lever 62 is moved to the right in order to move the end piece 62 a into the lateral end face 50 a of the cassette, so that the release lever 58 is not under pressure and is separated by the force of the return spring 59 from the platen 10 when the slidable lever 30 is moved to the platen. Accordingly, the release roller 54 remains separated from the platen, so that the recording sheet and the ink ribbon 1 are separated from each other immediately after heating or immediately after leaving the thermal head 25 .

Fig. 11 shows another embodiment for an ink ribbon cassette, wherein the release lever 58 , the release roller 54 , the return spring 59 , the slider 60 and the compression spring 61 , which are used in the previous embodiment, are replaced by a one-piece contact lever 73 .

In this embodiment, the contact lever 73 is slidably supported by the lower cassette part 52 and by the upper cassette part in the directions C1 and C2 and is moved in the named directions by a switch lever 62 in contact with it.

In this cassette, the stop 27 b comes to the device with the switch elbow 62 b to the system in order to move the switch lever 62 to the left, so that its end piece 62 a protrudes over the side face of the cassette 50 a and is brought into position who can come to toast this end piece with the system part 30 b. When the slidable lever 30 is moved toward be by the head motor M3 to the platen 10, the abutment portion 30 comes b on the end piece 62 a to abut to the selection lever 62 to the platen roller 10 to press out. The lever 62 pushes the abutment lever 73 into a position which is almost equal to that of the thermal head 25 with respect to the platen roller 10 , the abutment lever 73 being stopped in a position in which it is in contact with or close to the platen roller 10 .

As a result, the recording sheet 12 and the ink ribbon 1 converge after heating to the position otherwise occupied by the peeling roller 54 , and are then separated from each other.

On the other hand, if the projection 27 a of the device with the switch elbow 62 b comes to rest, the switch lever 62 is moved to the right, whereby its end piece 62 a enters the cassette end face since. Thus, the lever 73 is not subject to pressure and remains away from the platen roller 10 when the movable lever 30 performs a motion to the roller 10 toward. As a result, the abutment lever 73 remains removed from the roller, and the recording sheet and the ink ribbon 1 are separated immediately after the heating or after passing the thermal head 25 .

In the following, the switch between a recording and a correction process (removal or gang) discussed in more detail.  

Figs. 12-15 show plan views of the recording and correction operation, wherein the ink ribbon cassette is attached to the carriage plate 28 50 to a recording union to enabled.

How to selectively perform recording or correction using the ink ribbon cassette 50 will be described below.

Reference is first made to FIGS. 12 and 13, which show the case of recording by transferring both the central ink layer 3 a and the top layer 3 b of the correctable ink ribbon 1 to the recording sheet 12 , FIG. 12 showing the switching process of the cassette.

In response to receiving a record command, which will be discussed below, first the head motor M3 ( Fig. 6) is rotated counterclockwise to move the thermal head 25 in the B2 direction from the platen roller 10 . The slidable lever 30 also moves in the direction C2. Then the Wagenmo tor M2 ( Fig. 3) is actuated to move the carriage 22 ( Fig. 6) to the left, ie in the direction A2, the switching angle piece 62 b of the switching lever 62 with the projection 27 a Rack 27 comes into contact and the lever 62 moves to the right, ie in the direction K1. By this movement, the angle piece 62 a of the switching lever 62 is released from the movable lever 30 . The force of the return spring 59 moves the release lever 58 backwards (direction C2) and the switch lever 62 counterclockwise (direction Rich L2). As a result, the peeling roller 54 is sufficiently separated from the platen roller 10 .

Fig. 13 shows a state for recording. In the state shown in Fig. 5, the head motor M3 ( Fig. 6) is operated clockwise to move the thermal head 25 toward the platen 10 (direction B1) so that it passes over the ink ribbon 1 and the recording sheet 12 with the platen 10 comes in plant. In this state, the movement of the heat sink 26 in the direction B1 displaces the ver slidable lever 30 toward the roller 10 (direction C1). However, as already explained, the Rückstellfe 59 presses the release lever 58 backward (direction C2) and the switching lever 62 counterclockwise (direction L2), so that the release lever 58 is sufficiently separated from the recording sheet 12 . Thus, the carriage 22 is moved to the right, ie in the recording direction A1, and the heat generating part 25 a of the thermal head 25 consisting of a plurality of heat-generating resistors is activated in accordance with the recording command to heat the correctable ink ribbon 1 . Immediately after the heating, it is at the edge of 25 25 b of the thermal head by the rotation of Aufwickelkupplung 41 deflected and thus separated from the recording sheet 12th In this way, the central color layer 3 a is transferred together with the cover layer 3 b to the recording sheet 12 in order to form an image in one color of the color material contained in the central layer 3 a. The correctable ink ribbon 1 is then wound onto the winding hub 55 .

In the following will be discussed in the correction operation, with FIGS. 14 and 15 show the case where an erroneous recording is corrected by removing or loosening of the already deposited color and in this case, the Fig. 14 illustrating the switching operation of the cartridge.

In response to receiving a correction command, which will be discussed later, the head motor M3 ( Fig. 6) is operated counterclockwise to remove the thermal head 25 in the direction B2 from the platen roller 10 because of. The slidable lever 30 is also moved in the direction C2. Then the carriage motor M2 ( Fig. 3) is operated to move the carriage 22 ( Fig. 6) to the right, ie in the direction A1, so that the switch elbow 62 b of the switch lever 62 with the projection 27 b of the rack 27th comes to rest and moves the lever 62 to the left, ie in the direction K2. By this movement of the switch lever 62 , its end piece 62 a is brought into contact with the displaceable lever 30 . The return spring 59 presses the release lever 58 in the direction C2 backwards and the switch lever 62 in the direction L2 counterclockwise, so that the release lever 58 is sufficiently separated from the recording sheet 12 .

Fig. 15 shows a state for correcting an erroneous recording by peeling off the erroneously applied color. As already explained in connection with Fig. 13, the head motor is operated M3 clockwise to move the thermal head 25 toward the platen roller 10 (direction B1) and to bring about the correctable ribbon and the recording sheet 12 with the platen 10 in contact . In this process, the movement of the heat sink 26 in the direction B1 displaces the displaceable lever 30 in the direction C1 toward the platen roller. This displacement causes the abutting part 30 b of the lever 30 a of the switch lever 62 abuts on the end piece 62, so that the ser lever 62 clockwise direction against the action of the return spring 59 in the clock (in the direction L1) pivoted. By the swing of the switch lever 62 in the direction L1, the detachment lever 58 is moved forward in the direction C1 to abut on the ink ribbon 1 on the recording sheet 12 . The verschiebba re lever 30 moves further in the direction C1 to pivot the switch lever 62 in the direction L1, so that the slider 60 is displaced against the action of the return spring 59 and the compression spring 61 in the direction C1.

The force of the compression spring 61 thus brings the release roller 54 of the release lever 58 via the ink ribbon 1 into contact with the recording sheet 12 or in its immediate vicinity.

In this state, the carriage 22 is moved to the right or in the recording direction A1 and the heat generating part 25 a of the thermal head 25 is activated in accordance with the correction command to heat the ink ribbon 1 . By the rotation of the take-up clutch 41 in the direction I, the ink ribbon on the detaching roller 54 of the detaching lever 58 , which is distant from the heat generating part 25 , is deflected and therefore detached from the recording sheet. The central color layer 3 a of the ink ribbon 1 has an adhesive effect and detaches the color erroneously brought up from the recording sheet 12 . Then the correctable ink ribbon 1 is wound on the winding hub 55 .

With reference to the enlarged, schematic representations of FIGS. 16A, 16B, 17A and 17B, the recording and correction process of the recording will be explained in more detail.

FIG. 16A and 16B show the procedure for recording. Here, the thermal head 25 is held on the correctable ink ribbon 1 and the recording sheet 12 with the platen 10 in the printing system. The existing from several resistors the heat generating part 25 a of the thermal head 25 is acti vated in accordance with the recording command to heat the ink ribbon 1 during the movement of the thermal head 25 in the direction A1. By heating, the central ink layer 3 a of the ink ribbon 1 is melted accordingly the recording command, so that this layer is made to adhere to the recording sheet 12 and thus to produce an image.

Then, the thermal head 25 is moved in the direction A1, whereby the ink ribbon 1 is detached from the recording sheet 12 by the deflection at the edge 25 b of the thermal head 25 immediately after heating, that is, before the heated ink ribbon 1 can be cooled. In this way, the color 3 a 'of the heated area is transferred to the recording sheet 12 to form a record.

Correction of the image is carried out by detaching the deposited color according to a correction instruction as shown in Figs. 17A and 17B.

In the same manner as described above, the thermal head 25 is held in contact with the platen roller 10 via the correctable ink ribbon 1 and the recording sheet 12 . The heat generating part 25 a of the thermal head 25 is activated at the location of the paint 3 a 'to be removed in order to heat the ink ribbon 1 during the movement of the thermal head 25 in the direction A1. By this heating, the central layer is made adhesive A of the ink ribbon 1. 3 The ink ribbon is held with the recording sheet 12 with the help of the release roller 54 at a distance l from the heat generation supply part 25 a opposite to the direction of movement A1 sensitive point ( FIG. 17A) in contact. Then, the thermal head 25 and the peeling roller 54 move in the direction A1 while maintaining a mutual distance l, so that the ink ribbon 1 from the recording sheet 12 at the position of the peeling roller 54 where the ink ribbon has been delayed after heating, and therefore already is cooled, distracted and detached. The time of detachment can be determined by the speed of movement of the thermal head 25 and its distance l. The cooling of the ink ribbon 1 , which is determined by the heating of the thermal head 25 and by the time until detachment, which in turn is determined by the position and the speed of movement of the detaching roller 54 , causes decomposition of the central ink layer 3 a by condensation, so that this layer adheres firmly to the substrate 2 and is sufficient to detach the ink applied to the recording sheet 12 th color 3 a ''. The cover layer 3 b remains on the recording sheet 12 , but it does not interfere with a subsequent recording process since it is transparent.

As explained above, the apparatus according to the invention is capable of recording and correcting the recording by peeling off the applied color. The recording and the correction are made by detaching the ink ribbon at the edge 25 b of the thermal head 25 immediately after heating or by moving a distance 1 after heating by the thermal head in connection with removing the ink ribbon at the distance l allows the roller to be removed from the thermal head.

Fig. 18 shows a block diagram of an output unit of the device. Note that only component blocks are shown in Fig. 18 and control lines have been omitted. A central processing unit 100 is framed by a dashed line.

A central processing element (CPU) 101 reads various programs and data from the ROM (read-only memory) 102 , which will be discussed below, performs the necessary calculations and performs various controls. If desired, several processing elements can be provided. The read-only memory ROM stores various programs for the CPU and information necessary for printing, such as character code, dot systems and other information. A read / write memory TRAM 103 has a work area for the temporary storage of the data processed by the CPU, a buffer area for storing information given by the keypad 15 and an external interface IFu to be explained, a text area for storing documents, etc ., And can save the data by a backup battery even when the power supply is interrupted by the power switch 14 .

The CPU is connected to a pressure device Pu 107 by a thermal head drive THD 104 , a motor drive MD 105 and a Füh unit Su 106 .

The thermal head drive 104 operates the thermal head 25 in the printing device 107 under the control of the CPU, while the motor drive 105 operates the sheet feed motor M1, the carriage motor M2 and the head switch motor M3 also under the control of the CPU.

The sensor unit 106 transmits the information from the end sensor 23 and from the sensor 29 ( FIG. 3) which are in the pressure device 107 to the CPU.

A power source PSu 108 supplies a voltage VH to drive the thermal head 25 , a voltage VM for the motors M1, M2 and M3 and a voltage Vcc for the logic circuits.

A control unit GA 109 carries out various control processes under the control of the CPU, such as a change in the voltage and the current VH for the thermal head or a change in the heating duration or the working time of the thermal head 25 .

A keypad 15 for inputting various data necessary for printing and outputting is connected to the processing unit 100 via a keypad connection part KBC 110 .

Furthermore, a liquid crystal display 70 is connected to the processing unit 100 via a liquid crystal display connecting part LCDC 111 , which displays information or other information entered by the keyboard 15 . This liquid crystal display 70 then by other display devices, for. B. a cathode ray tube to be replaced.

The processing unit can through an interface unit 112 and interface connecting parts IFC with various interfaces for communication with an external device or for controlling the device by external equipment, e.g. B. an RS232C interface, a centro interface, a modem, etc., are connected.

Also, the processing unit can be connected through a memory cartridge connector 115 to a ROM cartridge 113 for special functions and for printing with various fonts and to RAM cartridges 114 for expanding the memory to store documents and data.

Although this is not shown, an audible warning can appear device, e.g. B. a buzzer can be provided.

Power on sequence

Control of the output device by a program stored in the above-mentioned ROM will now be explained. Fig. 19 shows a flow chart for controlling the power up sequence of the output device according to the invention. As has already been said, the apparatus is equipped with a thermal printer for recording and correcting recording, it can record a correctable ink ribbon for recording and correction or an non-correctable ink ribbon (ordinary ink ribbon), and it is capable of recording - or to select a correction process in the case of a correctable ribbon.

In the embodiment in question, the pressure and correction command the ribbon identification signal or be the signals entered by keys.

When the power is turned on, the thermal head 25 is first lifted to a state separate from the platen roller (S1) and the carriage 22 is moved to the end position sensor 23 in order to detect the absolute position of the carriage (S2).

When the carriage 22 is detected by the end position sensor 23 (S3), a correction flag stored in the memory TRAM is reset in order to select the printing process in the case of an ink ribbon that can be corrected (S4). Thus, the pressure state is the standard operation after switching on the power supply. This standard operation can be displayed. Then, the slack in the ribbon is picked up to obtain a uniform print quality, which will be discussed later (S5). In a step S6, a ribbon operating flag, which is stored in the memory TRAM and indicates whether the loaded ribbon or the ribbon to be loaded is a correctable or a non-correctable, is checked. This ribbon operating flag can be set by the sensor 29 , which detects the type of the ribbon or the ribbon cassette, or by a key or acoustic input by the operator. If the flag indicates the non-correctable operation, the program proceeds to step S8. On the other hand, when the flag indicates the correctable operation, the carriage 22 is moved to the set printing position ( Figs. 14, 15) and the ink ribbon cassette 50 is set to the printing operation to enable this operation (S7). In the following step S8, the carriage 22 is moved to a left edge position LM1 for non-corrective operation in the case of this type of operation or to a left edge position LM2 for corrective operation in the case of this operating mode. The left edge positions will be explained with reference to FIG. 20. The ribbon operating flag is held by a backup battery even when the power supply is cut off. It is also possible to identify the ribbon when the power is turned on and, if the result is different from that when the power is turned off, to give an alarm or an indication prior to data entry because there is a possibility of an error by the operator person is that data is entered for a correctable ribbon, even though a non-correctable ribbon is actually used.

An edge position for a non-correctable and for a correctable ink ribbon is explained below with reference to FIG. 20. A left margin position LM1 and a right margin position RM1 delimit a printable area for a non-correctable ink ribbon. In the embodiment in question, 80 characters can be printed. Even for a correctable ribbon, LM2 and RM2 determine an area in which printing or correction is possible. In the embodiment in question, 76 characters can be printed or corrected. Two characters at the left end are a correction mode setting position (switching area at the location of the projection 27 a) and two characters at the right end are a printing mode setting position (switching area at the location of the projection 27 b). An area from the end position sensor 23 to the printable area also serves to accommodate a ribbon slack. The projections 27 a and 27 b are, as already explained, intended for switching over the printing and correction processes of the ink ribbon.

Key entry sequence

Fig. 21 shows a flowchart of the control sequence of the key inputs by the operator. After identifying a key input in step S1, it is decided in step S2 whether a ribbon operation setting key has been operated, and if so, the program goes to step S8 to input a ribbon operation change subroutine while in in the negative, the program proceeds to step S3. The tape mode setting key RMKY can be replaced, for example, by operating the mode key MOKY and the number key "1" shown in FIG. 2. Then, in step S3, the operation of the print correction operation switching key CCKY is detected, and when it is operated, the program proceeds to step S7 to input a print / correction operation change sub-program. The print / correction mode changeover key CCKY can be replaced, for example, by operating the operating mode key MOKY and the number key "2". This CCKY key is used to change the print / correction mode of the correctable ink ribbon. If the decision in step S3 is negative, the program proceeds to step S4 to decide whether the operated key is a function key such as a return key, a tab key, a center key, a left edge setting key, etc. If the decision is affirmative, the program goes to step S6 for a function key control subroutine.

If, on the other hand, the decision in step S4 is negative, the key pressed will be identified as a PRKY pushbutton tified and the program goes to step S5 for printing  tax subroutine. After completing the above As a result, the program returns to step S1 to one next key entry expected. The explanation above was on the case of data entry through a keypad limited, the commands can of course also in an ex internal information or from an external control device, like a parent computer.

Recording a ribbon slack

The ribbon slack picking sequence of step S5 of FIG. 19, details of which are shown in FIG. 22, will be explained below. In step S1, the thermal head 25 is advanced, which enables the ink ribbon of the cassette to be wound up (cf. FIGS. 5-8). Then, in step S2, the carriage 22 is moved by one character distance in the direction A1 without activating the thermal head 25 , and in step S3, the thermal head 25 is moved back. Through these steps, the slack in the ribbon is removed and this is kept at a predetermined tension.

Ribbon change

The subroutine for changing the ribbon operation in step S8 in FIG. 21, details of which are shown in FIG. 23, is explained below. In step S1, the ribbon operation flag bit in the memory TRAM is first inverted, with which the non-corrective operation is converted to correctable operation or vice versa. Then, in step S2, the reverse operation is detected, and if it is the non-correctable operation, the program goes to step S4 to input the power-on program shown in FIG. 21. On the other hand, if it is the correctable operation, then step S3 sets the left and right margin positions LM2 and RM2 for the correctable ink ribbon (see the explanation of Fig. 20) in the memory TRAM in which the positions LM1 and RM1 are normally set are. Then, the program goes to the power-on program in step S4, in which the ribbon slack is removed and the carriage is moved to an appropriate left margin position LM1 or LM2 in accordance with the ribbon type as explained. It is also possible to move the carriage to an edge position set by the operator. Also, the ribbon operation does not necessarily have to be set by the key input, but can be determined by the program shown in Fig. 25 in accordance with an automatic decision by the sensor 29 . The presence of the two pressure ranges mentioned above can also lead to an incorrect input of the edge positions by the operator, but in such a case a warning can be issued or the edge position can be shifted to a correct one, disregarding the incorrect input by the operator.

Change in print / correction mode

The subroutine for changing the printing / correction operation of step S7 of FIG. 21, of which one is shown in FIG. 24, will be explained. A cassette with a correctable ribbon must be used to change the print / correction mode. Therefore, the tape operation flag is detected in step S1, and if an ink ribbon cassette which cannot be corrected is detected, an audible or visible signal is emitted in step S2 because the input command for an operation change is invalid. On the other hand, if a correctable ribbon cassette is found in step S1, then the correction flag in the memory TRAM is inverted in step S3, whereby the printing operation is changed to the correction operation or vice versa. The current carriage position is also stored in the memory TRAM. In step S4, the correction flag thus inverted is detected, and if it is in the reset condition indicating the printing operation, the program goes to step S5 to move the carriage to the printing operation setting position mentioned above. On the other hand, when the correction flag in step S4 indicates the correction operation, the program goes to step S6 to move the carriage to the correction operation setting position (see Figs. 14 and 15). In step S7, the carriage is then guided to a position which lies before the carriage movement in step S5 or S6, or to the next printing position. In the print / correction operation change subroutine in question, the elimination of the ribbon slack is not performed, but it is possible to change this slack depending on the input of a print / correction operation change signal, e.g. B. after step S7 in FIG. 24.

Print / correction sequence

The printing sequence of step S5 of FIG. 21, details of which are shown in FIG. 25, will be explained below. In the case in question, the output information may be based on any data such as characters, schemes, images, symbols or combinations thereof. The program goes to said step S5 ( Fig. 21) by a print command from the print command key PRKY, but this print command can be generated for each character or word or line. The movement of the carriage is achieved, for example, by the motor drive 105 (see FIG. 18), but the motor etc. are excluded from the description for the sake of simplicity.

In Fig. 25, the carriage is moved to the printing home position in step S1, and the thermal head is advanced in step S2. In step S3, the tape operation flag is detected, and in the case of non-correctable tape operation, the program goes to step S4 for the carriage speed for non-corrective operation using a speed table in ROM. Then in step S5 the car with the speed thus set, z. B. 18 characters / s, accelerated. In step S6, the heating condition for the non-corrective operation is determined by giving commands to the controller 109 to regulate the voltage and the current, and a heating time for the non-correctable operation, e.g. B. heating for 1.1 s. In step S7, the thermal head is activated according to the heating condition to perform printing. The thermal head is then moved back in step S8, whereupon an overflow or a predetermined movement of the carriage is carried out in step S9. The overflow enables the operator to view the printed character and also enables the index mark 30 a to display the next printing position. The consequence is ended in this way, the position of the carriage in this state being the print-ready position in the non-correctable belt mode.

If, however, in step S3 on the correctable Tape operation is recognized, then the program jumps to Step S10 to check the correction flag. Is this flag reset, which characterizes the printing operation, so goes the program to step S11 to the car speed for the correction operation from a speed table in the ROM set. In step S12, the car with the one set speed, e.g. B. 18 characters / s, accelerated and driven. Then, the heating condition becomes in step S13 for corrective belt operation by the tension, set the electricity and heating time. The thermal head will under this condition activated in step S14 to a To print, and in step S15 the Ther mokopf moved back, whereupon in step S16 an overflow is executed to end the sequence.  

On the other hand, if it is recognized in step S10 that the correction flag is set, which indicates the correction operation, then the program goes to step S17 to set the carriage speed for the correction operation. In step S18 the car is driven at the set speed, e.g. B. 10 characters / s, accelerated and operated. In step S19, the heating condition for the correction operation is then set, whereupon the thermal head is activated in step S20, e.g. B. is heated for 0.4 ms to perform the correction process. The carriage speed and the heating condition in the correction mode are selected differently from those in other modes to ensure the correction process. In step S21, the carriage is guided to the initial position of the head being moved back and moved by a distance 1 (see FIG. 26) in order to change the detachment position of the ink ribbon. This change allows the ink ribbon to cool so that the correction process can be realized. In a step S22 the thermal head is relocated, whereupon in step S23 an overflow is effected in the same way as in the non-correctable or correctable tape mode. In this non-correctable or correctable tape operation, the index mark 30 a indicates the next print position after the overflow in step S9 or S16, but in the case of step S24 the index mark does not indicate the next print position because the carriage stops at one position, which operated in the non-correctable Bandbe because of step S21 is different. Therefore, the carriage is moved back a step corresponding to 64 pulses in step S21 to stop the carriage at the same position of the non-correctable tape operation. In this way, the index mark 30 a is moved in any band mode or in either the pressure or Cor rekturbetriebsart the next print position indicated.

Fig. 26 shows the positional relationship between the index mark 30 a, the thermal head 25 and a printed character, the "H" with solid lines represents an already printed character, while a dashed "H" indicates a next printing position. The distance m between the index mark 30 a and the thermal head 25 is naturally constant regardless of the tape or printing or correction operation. The dashed index mark indicates a desired position corresponding to the next print position, while a strongly drawn index mark indicates the head position moved back after the correction. With n is the distance from the position of the thermal head 25 at the end of printing to the center of the next printed character. Thus, an overflow of (m + n) is carried out in the printing operation with the non- or the correctable ink ribbon in order to bring the index mark into the next printing position (step S9 or S16 in FIG. 25). In the case of the correction operation, the carriage is already advanced by 1 ( FIG. 26), as explained in connection with step S21 of FIG. 25. The size of the values n, m and l has an arbitrary relationship. Steps S21, S23 and S24 in Fig. 25 cause carriage movements on the order of 1 + (n + m) - 1 (ie S21-S23-S24), however, as can be understood from Fig. 26, it is possible to advance the carriage by the distance l after printing (S21) and to move the carriage back by l - (m + n). In the embodiment in question, regulation of the heating time is considered, but it is also possible to to regulate the voltage VH.

Although the described embodiments refer to those that using a ribbon has been limited is the invention not limited to such embodiments, but also on a ribbon or a broadband, such as is used in line printers.  

Also, the record carrier is not on the one described Recording paper limited, but can for example wise be a transparent plastic film as used for over head projectors is used.

In addition, the heater is not on the here described thermal head limited, but can also by other facilities are formed in a suitable manner, e.g. B. as infrared light or as a laser beam.

In connection with the embodiments, a so-called Serial printer described in which a thermal head along one Record sheet moves back and forth, however, is the inven also applicable to so-called full-line printers where a heating device, like a thermal head, over the entire Recording width is provided.

Although a color in the illustrated embodiments tape cassette is used, which contains an ink ribbon and can be detachably attached to the device, so is the inven not limited to this case, because it is exemplary wise possible, one on a spool or as a roll apply the cold ribbon immediately.

Furthermore, the explained embodiments relate to a construction in which an ink ribbon cassette and float, however, invention is also on other constructions applicable where the ribbon cassette te is stationary, for example.

The recorded image or record can be made from Characters, numbers, figures, symbols u. Like exist.  

Although as examples in the described embodiments to correct the records, ablate or ab solve has been explained, the invention can also Ribbon for correction by a cover, i. H. For a correction by covering the record, user find.

Further, in the embodiments, the cooling of the paint bandes after it has been warmed up by automatic cooling achieved, which results in the delayed detachment, however the invention can also use forced cooling, e.g. B. by touching a metal, such as iron or aluminum, with the ribbon or cooling by inflating kal air on the ribbon.

From the above explanatory description is clear Lich that according to the invention an image on an up Drawing medium in accordance with a recording command generated and, if necessary, a false recording can be corrected.

Claims (8)

1. Recording device for creating and correcting records using an ink ribbon ( 1 ) which between a recording position ( Fig. 13) and a correction position ( Fig. 15) by means of a correction device ( 54 , 58 ) is displaceable with
a ribbon feed device ( 41-44 ) which can be driven via a first drive (M2) and
a via a second drive (M3) to a record carrier ( 10 , 12 ) and displaceable from this write head ( 25 ), characterized in that the correction device ( 54 , 58 ) between the recording and the correction position by means of the second Drive (M3) is displaceable, the second drive (M3) can optionally be operatively connected to the correction device ( 54 , 58 ) via a lever ( 62 ), and wherein the lever ( 62 ) is indirectly bar (stops 27 a, 27 b) via the first drive (M2) between a first position ( FIG. 13), in which it interrupts the operative connection between the correction device ( 54 , 58 ) and the second drive (M3), and a second position ( FIG. 15), in which he operatively connects the correction device ( 54 , 58 ) to the second drive (M3) is adjustable. 2. Recording device according to claim 1, characterized in that the write head ( 25 ) is assigned a slide ( 30 ) which, together with the write head ( 25 ) to the recording medium ( 10 , 12 ) and from this ver can be stored away , And at its opposite to the record carrier ( 10 , 12 ) facing away from an engagement part ( 30 b) for the lever ( 62 ), the lever ( 62 ) in its first position ( Fig. 13) out of engagement with the Engagement part ( 30 b), and is in its second position ( Fig. 15) with the engagement part ( 30 b) be in engagement to the correction device ( 54 , 58 ) when Ver storage of the write head ( 25 ) non-positively in the Correct correction position ( Fig. 15). 3. Recording device according to claim 1 or 2, characterized in that the correction device ( 54 , 58 ), the ribbon feed device ( 41 - 44 ), the write head ( 25 ) and the lever ( 62 ) arranged on a carriage ( 22 ) are which can be moved along the record carrier ( 10 , 12 ) by means of the first drive (M2), the ink ribbon feed device ( 41-44 ) when moving the carriage ( 22 ) with the aid of a along the record carrier ( 10 , 12 ) arranged rack ( 27 ) can be driven, at the ends of which a projection ( 27 a, 27 b) is attached, by means of which the lever ( 62 ) can be adjusted by moving the carriage ( 22 ). 4. Recording device according to claim 3, characterized in that the ink ribbon ( 1 ) is accommodated in an ink ribbon cassette ( 50 ) which is detachably attached to the carriage ( 22 ). 5. Ribbon cassette ( 50 ) for a recording device, in particular according to one of the preceding claims, which can be driven via a first drive (M2) of the ribbon feed device ( 41-44 ) and a drive via a second drive (M3) which can be displaced by the write head ( 25 ), wherein the ink ribbon cassette ( 50 ) has an ink ribbon ( 1 ) which can be moved between a recording position ( Fig. 13) and a correction position ( Fig. 15) by means of a correction device ( 54 , 58 ), characterized by a movable the ribbon cassette ( 50 ) arranged lever ( 62 ), by means of which the second drive (M3) of the recording device can optionally be operatively connected to the correction device ( 54 , 58 ), for which purpose the lever ( 62 ) between a first position ( FIG. 13), in which he interrupts the active connection between the correction device ( 54 , 58 ) and the second drive (M3), and a second position ( FIG. 15) in which he corrects the correction device ( 54 , 5 8 ) operatively connected to the second drive (M3), is adjustable. 6. Ribbon cassette ( 50 ) according to claim 5, characterized in that the correction device ( 54 , 58 ) on the ribbon cassette ( 50 ) is movably attached. 7. Recording device according to one of claims 1 to 4 or ribbon cassette ( 50 ) according to claim 5 or 6, characterized in that the correction device ( 54 , 58 ) in the correction position ( Fig. 15) in the direction of the record carrier ( 10 , 12 ) is elastically biased by means of a spring ( 61 ). 8. Recording device according to one of claims 1 to 4 or ribbon cassette ( 50 ) according to one of claims 5 to 7, characterized in that the correction device ( 54 , 58 ) in the direction of the recording medium ( 10 , 12 ) away by means of a spring ( 59 ) pretensioned slide ( 58 ), which has at one end a roller ( 54 ) which can be brought into engagement with the ink ribbon ( 1 ) in the correction position ( FIG. 13), and via the lever ( 62 ) by means of the second Drive (M3) in the direction of the recording medium ( 10 , 12 ) is displaceable when the lever ( 62 ) is in the second position ( Fig. 15).