DE2715428C2 - Device for printing forms, in particular tickets - Google Patents

Description

- That the paper feed device consists of three feed units !, namely the two Driving roller sets (8, 9) and behind them, as a feed device for a paper web Tractor set (7) that are switched for rectified synchronous operation,

- That for printing to be introduced in Vorsteckbetrieb each of the individual forms Troibrolic approach (8,9) to one of the respective other feed units, independent, reversible single drive is switchable, and

- That between the second Trcibrollcnsatz (9) and the tractor set (7) one of the Control device operated switch (11) is provided, through which a ü when Vorsteckbelricb rectified branch line (36) with switching off the one containing the tractor set (7) Track section of the continuous transport track (3) to which the drive roller sets (8, 9) Containing track section is connectable. to

2. Apparatus according to claim I, characterized in that the cutting device (5) between the printhead (1) and the second drive roller set

(9) and the rear edge of the print ■ »·> genlage (6) cutting edge and that the lower guide plate adjoining the cutting edge (34) is designed as a rocker (35) which can be pivoted downward against the action of a spring.

3. Device according to one of claims 1 or ίο 2, characterized in that a first light barrier immediately in front of the first drive roller set (8) (14) and immediately behind it a second light barrier (15) are arranged as a pulse generator.

4. Device according to one of claims 1 to 3, ■ » characterized in that a third light barrier (16) as a pulse generator in the secondary lane (36) is arranged.

5. Device according to one or more of claims 1 to 4, characterized in that eo on the operator side, in front of the first drive roller set (8), another switch (10) in the paper transport path

Is positioned (3) can be connected via the shut-off under the discharge tray (48) cut a Vorstecktriehter (38) to which the drive roller sets (8, 9)-containing Bahnab- b ">.

6. Apparatus according to claim 5, characterized in that the operator side in front of the first Driving roller set (8) an ejection switch (13) for misprints and the like is provided.

7. Device according to one or more of claims 1 to 6, characterized in that on the shaft of one of the driven drive rollers of the second drive roller set (9) one towards the Printed form coordinated first timing disc (17) and arranged via a slip clutch connected to this shaft and rigidly coupled to a ratchet wheel, which this and so that the first timing disc (17) by means of a spring-loaded pawl (19) in one of the first Holds driving roller set (8) to the second driving roller set (9) directed transport direction.

8. Device according to one or more of claims 1 to 7, characterized in that on a drive axle (20) of the tractor set (7), a second Takischeibe (23) and a third Clock disk (25) are arranged.

The invention relates to a device for printing forms, in particular tickets, with a print head and a platen for a continuous paper transport path, which acts as a paper feed device a first set of drive rollers in front of the printhead and a second set of drive rollers behind Contains the print head, and on the operator side to an output tray or the like. Leads with a cutting device for separating related forms and with a control device for the movement sequences the paper feed device, the print head and the cutting device, wherein to the control device Pulse generators that record the position of a form are connected.

The invention is based on a device known from DE-AS 10 66 771, which is used for printing of continuous forms and includes a cutting device, in which the before and after the Drive roller sets arranged in the printhead are used solely to advance the continuous web.

Retrofitting the known device to the optional pre-plugging operation would be a considerable one Lengthening the transport path and thus increasing the overall depth of the printer, because for the Form to be placed in front of the required space ers; must be created without it becoming a Overlap of the continuous web with the pre-positioned form comes. In addition, the distance between the two should be Driving rollers themselves to each other are considerably enlarged to once the continuous form with Vorsteckbetrieb still in the effective range of the second transport roller attachment, but on the other hand before the second Set of driving rollers to provide space for the pre-stacked form.

The invention is based on the object of providing a compact device for printing forms, in particular to create tickets that work both in continuous operation and in pre-plugged operation can, d. H. that the task of printing tickets that are introduced manually, as well as that Printing and cutting of tickets that come from a paper web with a perforated edge should be recorded. If both operating modes are optional, the printing unit must be converted when changing from

to avoid one to the other operating mode. Furthermore, the ticket must be able to be printed over the entire surface, so that Transport-related, non-printable zones, as required by some known constructions are not allowed.

According to the invention, this object is achieved by

- That the paper feed device consists of three feed units consists, namely the two sets of driving rollers and behind them, as an insertion device for a paper web a tractor set, which are switched for rectified synchronous operation,

- That each of the sets of driving rollers is used for printing individual forms to be introduced in pre-positioned operation on one before. the other feed units are independent and reversible in direction of rotation Single drive is switchable, and

- That between the second drive roller set and the tractor set a switch operated by the control device is provided through which the Vorsieck operation a rectified branch line with the shutdown of the one containing the tractor set Path section of the continuous transport path to the one containing the drive roller sets Track section is connectable.

The invention achieves that, without any retooling of the device, either in continuous operation and you can work in pre-plugging mode.

Embodiments of the invention are shown in the drawing and will be described in more detail below described: It shows

1 shows the functionally essential parts of a ticket printer without housing,

F i g. 2 shows a modification of the printer according to FIG. 1.

F i g. 3 shows a detail from FIG. 2,

Fig. 4 to 6 show the functional sequence in pre-plugging operation,

7 to 9 show the functional sequence in continuous operation,

Fig. 10 shows the control scheme.

The structure of the printer will first be described with reference to FIG. The ticket printer assigns a Print head 1. which is mounted on a carriage 2 on. The carriage 2 is movable transversely to the paper web stored; it is moved by a drive system, not shown. This is one so-called dot matrix printer, also called matrix printer. On the carriage 2 are a pressure roller 4 and the The cutting roller of a cutting device 5 is movably mounted. The printing takes place against a pressure counter position 6. one side of which is designed as a cutting edge.

The paper transport part consists of a continuous paper transport path 3 and a paper feed device. The continuous paper transport path 3 begins at the rear on a guide plate 34, runs between a flap 33 and a tractor set 7 to a second drive roller set 9, between Print head 1 and platen 6 through to a first drive roller set 8 in an output tray 48. The in Fig. 2 to see interruptions of this continuous Paper transport path 3 through switches 10 and 11 are made by changing these switches 10 and 11 revocable.

The paper feed device consists of three feed units, namely the one in front of the operator the first driving roller set 8 arranged on the platen, the set behind the platen second drive roller set 9 and behind it as an insertion device for a paper web the tractor set 7. The Drives of the drive roller sets 8, 9 and the tractor set 7 are through the control device, not shown from synchronous operation rectified in relation to their driving peripheral speed to from dtn each other feed units independent direction of rotation reversible single drive switchable. Between the second drive roller set 9 and the

ίο tractor set 7, the switch 11 is provided through which a rectified secondary lane 36 with the shutdown of the track section containing the tractor set 7 the paper transport path 3 can be connected to the path section containing the drive roller sets 8, 9. the front switch 10, which is moved by a magnet, not shown, optionally connects, as in FIG F i g. 2 is shown, a feed funnel 38 with the paper transport path 3. The switch 11 is through a actuated spring-loaded lever 12, the roller 37 on a double disc 21, which in a certain position as Cam acts, sits down. An ejection chute 13 is provided, which is also not through an ei.nen drawn magnet is moved and in the in F i g. 3 position shown the ejection for example a misprinted or damaged ticket 46 allows.

The device contains light barriers as a pulse generator for the control device, namely in front of the first drive roller set 8 a first light barrier 14,

jo behind a second light barrier 15 and in the Secondary track 36 a third light barrier 16. The drive of the drive roller sets 8 and 9 as well as the tractor set 7 takes place in such a way that the circumferential speeds can be the same, but also each system for itself

j-) simultaneous standstill or inactive state the other systems can be driven. In one implemented embodiment, a reversible drives DC motor the entire paper transport system, whereby by appropriate choice of the reduction ratio the same peripheral speed is achieved in all three systems. With a total of three electromagnetic Clutch-brake systems can be either the drive roller set 8 or 9 or the tractor set 7 can be driven individually like aucii in any combination. Furthermore, it is possible to flow through both the clutch and the brakes to make one of these systems driveless. Through these notices is only intended to express that it is possible with a single drive motor, however

>!) with the help of other machine elements the Operate device.

In addition, both rollers are driven in opposite directions in the driving roller sets 8 and 9, the upper pipes are resiliently pressed against the lower rollers. This double drive is necessary to properly transport multi-layer paper webs, as they are used in particular for flight tickets to be able to.

On the lower axis of the Treibrollensat7.es 9 a timing disk 17 is frictionally attached, which per Line break has a slot which is scanned by a sensor 18. A pawl 19 fixed to the frame, which engages in a corresponding ratchet wheel of the timing disk 17, the timing disk 17 can when rotated in

hi Uhi hold in one position in a clockwise direction, while turning counterclockwise the timing disk follows the movement of the axis.
With the drive axle 20 of the tractor set 7 are

three systems firmly connected, namely the double disk 21 and further timing disks 23 and 25. The double disk 21 actuated when the tractor set 7 is rotated clockwise in a certain position via the Lever 12 and a corresponding lever connection 39, the switch 11. The two adjacent Disks of the double disk 21 can be rotated relative to one another and can be moved into one position via a pawl 22 brought, match in the semicircular cutouts 44, 45 (see Fig. 8) and the lever 12 collapse can.

The timing disk 23 has a slot for each line circuit, the slots being provided via a sensor 24 are scanned. The further timing disk 25 has only one slot, which is determined by a sensor 26 is scanned. In the construction shown, the procedure was that one revolution of the driven tractor wheel of the tractor set 7 corresponds to the transport by a form length. Is this not given, the double disk 21 and the timing disks 23 and 25 are on their own shaft to be arranged, which is to be driven by the drive axle 20 with a corresponding reduction.

The construction of the paper transport system also includes several control devices. Included the parts 27 and 28 form the plug-in funnel 38, which is open to the operator. This is directly connected to this behind the first drive roller set 8 a spring-loaded pressure plate 29, the right edge of which by the Pressure roller 4 is pressed against the surface of the material to be printed during printing. A top cover 30 of the The middle part of the paper transport path 3 and the secondary path 36 has an inlet funnel on the print head side. The lower cover 31 of the paper transport path 3 and the secondary path 36 is through the switch 11 interrupted. The tractor set 7 is covered by a flap 33 which can be pivoted about a bolt 32, wherein the flap 33 presses the paper against the spikes of the tractor set 7 from above.

Furthermore, a resilient rocker 35 is provided, which forms a transition to the printing counter-surface 6 and at detached cutting device 5 can evade (see Fig. 9). The completed tickets are stored in the Output tray 48 presented to the operator.

In the embodiment according to FIG. 1, the tractor set 7 is arranged horizontally. Furthermore is To operate the switch 11, an electromagnet 49 is provided, which is controlled by a further timing disk 50 and a sensor 47 is actuated. 40 is a spring for holding the pawl 19. A paper web 41 is inserted.

The F i g. 4, 5 and 6 show the process when creating a pre-cut ticket: F i g. 4 shows the beginning of the collection. By the operator a ticket 42 is pressed against the stationary pinch roll set 8 case, the first photocell 14 is darkened after a short preset time of the automatic collection starts by rotating the drive roll sets 8 and 9. The ticket 42 is drawn into the machine to the right until the third light barrier 16 is darkened (Fig. 5). The drawing-in movement is now stopped. The third light barrier 16 is arranged in such a way that the position of the ticket 42 is such that the bottom line of the ticket 42 can be processed. The switch 10 is now switched, the polarity of the drive motor is reversed and the printing of the ticket 42 begins, interrupted by line switches (FIG. 6), which are carried out by the drive roller sets 8 and 9, with the now moving timing disk 17 taking over the control when the printing is complete , the ticket 42 is thrown into the output tray 48 by further actuation of the drive roller set 8. Important is. that during the Vorsteckbetriebes the tractor set 7 remains in the ■ ·, position in which the switch 11 is in its lower position.

For the processing of the paper web 41 shown in FIGS. 7, 8 and 9, all feed units are used operated and thereby the paper web in the

ίο Gap between printhead 1 and platen 6 pushed. The double disk 21 presses the switch 11 via the lever 12 into an upper position.

The paper web 41 is advanced so far that the left end has passed the drive roller set 8. In

i ^r> a practical embodiment this is achieved in that the paper web 41 runs as far until a full length form, that is to the left of the cutting edge from the right edge of the platen. 6 The motor is now reversed and line breaks are carried out until the top line of the form is in the printing position. It has proven to be practical if the drive roller set 8 is not driven, since this causes the paper to shrink in the printing zone. Pressure and

2 ^r , line feed alternate until the ticket is created (Fig. 8). The timing disk 23 is decisive for the line switching. When printing is complete, the form is transported so that the cutting edge and end of the form match, indicated by a signal from the timing disk 25. The cutting process now takes place (FIG. 9). The ticket 43 is then ejected via the drive roller set 8.

In the process just described, the single ticket is from below, but the endless ticket is from above starting printed. The reasons for this arrangement are twofold: In the case of a single ticket, a pre-printed bar code can be read on the lower edge of the ticket. The laser is attached to the carriage 2, but not shown. Since this read is the first operation and must be completed before printing can begin printing from the bottom is the quickest route for the single ticket. (It by comparing the information read, it is determined whether the correct ticket has been inserted.) In the case of endless tickets, when processing multi-layer sentences, an undesirable bulging of the left one often occurs Ending up if the ticket was only pushed in the case of line breaks. Therefore the described Operating mode selected in which the free end of the ticket is only used when it is first pushed forward and when pushed forward is pushed for cutting while it is pulled for printing.

By changing the controls accordingly, it is of course also possible to label the individual ticket from top to bottom.

In Fig. 10 is a schematic of the control sequence for the in the F i g. 4 to 9 shown movement sequences are shown

The terms mean: L 1 corresponds to 14, L 2 corresponds to 15, L 3 corresponds to

16.

K 1 and B 1 correspond to clutch and brake for

the drive roller set 8.

K 2 and B 2 correspond to clutch and brake for

the driving roller set 9,

K 3 and B 3 correspond to clutch and brake for

the tractor set 7.

7 "2 is the clock signal of parts 17 and 18.

T3 is the clock signal of parts 23 and 24.

TOF is the clock signal of parts 25 and 26.

V ⁷ TiSt a feedback message, not shown, which indicates the switchover of the switch 11.

DR stands schematically for the printing of one line.

SM schematically stands for cutting off.

IVl corresponds to the irony of the switch magnet 10.

It corresponds to the load on the engine.

In the usual representation, O for L 1, L 2, LX TI, Γ3 and TOF corresponds to a darkened sensor. For / C 1/2/3 and B 1/2/3 and Wl, O corresponds to the unsiromed state. Motor direction "forward" means transport from right to left. The specification »/« stands for a short waiting time. In the line »Control commands« there is the symbol for a complete printing process. The first sequence comprises drawing in, printing and ejection of a single ticket. The second sequence comprises a full sequence for a ticket from the paper web, the retracted position (VT) being taken as the starting point. If several tickets are printed one after the other, the process starts with the second FFl. The third sequence corresponds to the retraction of the paper web to the VT position, this corresponds to switching the machine over to push-forward operation.

The fourth sequence corresponds to a pull-in process using the light barrier 15 (L2) according to FIG. 8th.

In the representation, those responses that are unimportant for Ab'auf are shown in dashed lines.

In addition 5 sheets of drawings

Claims (1)

Patent claims: 1. Device for printing forms, in particular tickets, with a print head and a printing counter-surface for a continuous paper transport path, which acts as a paper feed device a first set of drive rollers in front of the printhead and a second set of drive rollers behind the Contains print head, and on the operator side to an output tray or the like. Leads with a cutting device for separating related forms and with a control device for the Movement sequences of the paper feed device, the print head and the cutting device, wherein pulse generators that record the position of a form are connected to the control device, characterized,