DE2416049A1 - DEVICE FOR FEEDING DOCUMENTS TO DATA PROCESSING MACHINERY - Google Patents

Description

Boeblingen, March 28, 1974 heb-oh

Applicant: International Business Machines

Corporation, Armonk, N.Y. 10504

Official File number: New registration

Applicant's file number: EN 972 060

Device for feeding documents to data processing machines

The invention relates to a device for feeding documents to a data processing machine and in particular a device for feeding documents to the printing station a booking engine and the like.

Although the invention is not limited to _f it is suitable but in particular for the supply of sheets consisting of many documents, such as bank passbooks or books, as they are commonly used in the banking business.

In office machines of the type to which the invention relates, such a document is normally inserted into the machine by hand inserted in order to automatically enter data relating to one or more business transactions. After printing the document is removed on one or more lines and is available for further business transactions. This process is repeated for each business transaction, so that there is a complete overview of accounts.

It is necessary that the document is loaded every time is set to the next free line for printing. It is also important that the document in relation to the printing station from the start when it is placed in the machine

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as well as for subsequent print lines in which requests are entered is precisely aligned. Achieving proper alignment both at the start of the printing process and finding the next free print line has repeatedly led to difficulties. For documents consisting of several If there are leaves, such as bank books or passbooks, additional difficulties arise in the handling of these documents on. In the case of multi-page documents such as bank books or passbooks, there is also a difficulty in feeding these documents from the fact that these are folded around a back. This spine makes the document feed special Trouble. Furthermore, such a multi-page document is also used to record business transactions on various Pages used. Thus, the document feeder of this type is required to have different thicknesses is suitable and this, regardless of the different thickness or strength of the document, to align with the printing station be able to.

The object of the invention is therefore to provide an improved device for feeding documents in a data processing machine or business machine, whereby documents are different Thickness can be processed. The document is intended for one or more print positions for recording data be kept accurate, aligned and aligned in successive lines of print with respect to the print station.

The insertion of multi-page documents, such as bank accounts or passbooks, should preferably be improved, if the document is inserted into the machine by hand, so that then the cross-sided document exactly on the next free print line aligned and then automatically according to an or KJehrarea further pressure ropes in precise alignment with the Printing station can be promoted.

The invention is now based on νοκ embodiments in EN 972 060

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Connection with the accompanying drawings described in more detail, the essential features of the invention in the attached Claims are specified.

In the drawings shows:

Fig. 1 'with a booking machine in side view

a feeding device;

FIG. 2 shows a plan view of the booking machine shown in FIG. 1, partly in section;

3 and 4 are partial side views of that shown in FIG

Machine in different positions of a work process;

Fig. 5 is a block diagram of the control circuits for

Operation of the device according to FIGS. 1 to 4;

Fig. 6 shows a detail of the construction on the right

Side of Fig. 2;

Fig. 7 shows a locking mechanism on the left

of Fig. 2;

Fig. 8 shows part of the control circuit in Fig. 5; and

9 is a timing diagram illustrating the operation of the machine and circuit.

As can be seen from FIGS. 1 and 2, the accounting machine 10 contains a printing station 11 which is mounted on a frame above a feed device for documents. The printing station can be of a type known per se, but preferably consists of a rotating disk 12 and a printing hammer attached to a carriage with drive device 14

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13. The carriage with drive device 14 is on one horizontal drive rail 15 attached and can move parallel to a print line. The type disk 12 has a number flexible fingers, each of which has a character type 16 on its lower face. In the preferred embodiment In the present invention, the printing device 11 operates on the fly. The type disc runs 12 continuously, and the print hammer 13 strikes the flexible finger for the desired character 16 so that the finger is bent out of the plane of the type disk and strikes the document 17 while the type disk 12 is rotated by the drive 14 at the same time. At the same time type wheel 12, print hammer 13 and carriage 14 move in the longitudinal direction via the drive rail 15 at a constant speed, so that all character types 16 on the type wheel at each Print position along the document 17 can be passed and selectively struck, thereby a printout of data on a line on document 17. As can be seen from Fig. 1, to drive the type wheel 12 and to Movement of carriage 14 on rail 15 using a motor 18 for movement along a print line of document 17, which drives a drive pulley 21 attached to the shaft 15 via a drive pulley 19 and a drive belt 20. As one recognizes from Fig. 1, the printing station is shown essentially schematically, since this type of printing station with a carriage and drive mechanism is known per se.

In this context, reference should be made in particular to the US patents 3,461,235 and 3,613,856, which give details of the structure and mode of operation of a printing station with a rotating type disk, as can be used in the present invention.

According to the present invention, the document 17, which in the present case is preferably a multi-page bank book or Passbook is, according to one or more predetermined line

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Positions on its surface for recording data the printing station 11 is supplied. First, the bank book 17 is opened with the desired page and manually inserted into the machine inserted that the first line in the bank book with the type characters 16 of the type wheel 12 are aligned. If the banking book is inserted, it actuates a feed device for the document which, controlled by an input control, e.g. a keyboard or a data processing system, the bank book 17 in one or more subsequent desired print lines forwards promotes. If more than one line is to be printed in the bank book, the control device is set so that the Conveying device for the document automatically promotes the bank book in successive predetermined steps to the first to bring the first free line and further free lines of the bank book 17 into the printing position relative to the type wheel 12. After the end of the pushing process, an ejector mechanism throws the bank book from the machine so that it can be removed by the operator.

The conveying device for the document consists of a lower guide plate 22 and an upper guide plate 23, which are in front the printing mechanism or the printing station are arranged. The guide plates 22 and 23, which are preferably arranged horizontally are designed so that they form a horizontal insertion slot, which is suitable for both manual and automatic Feeding of the document 17 is suitable and in particular for inserting a bank book or savings book in the open and closed position flat shape is suitable. The lower guide plate 22 is essentially a flat plate that is on opposite edges is connected to the side frames 24 and 25 and so a horizontal Forms edition for the manual placement of the document 17. The rear edge of the lower guide plate 22 runs into a Row of rectangular sections 26, which are separated from each other by just such rectangular spaces 27 * the number of sections 2β is not specified, but they should preferably be of the same size and

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stands or spaces 27 be separated from each other and this over the entire width of the plate 22. The lower plate or Guide plate 22 is also chosen to be sufficiently thick so that the sections 26 are relatively rigid and normally under Do not bend the action of the document 17 sliding over it. The upper guide plate 23 is also attached with its side edges to the side frames 24 and 25 and cooperates the guide plate 22 together and forms the horizontal slot for manual feeding of the document 17 into the machine into it. For this purpose, the upper guide plate 23 has a flange 28 bent slightly upwards, so that it is relatively easy is to manually feed the document on the lower guide plate 22.

Beyond the guide plates 22 and 23 is a front reference plate 29. The front reference plate 29 can be designed in various ways and is preferably L-shaped and acts when it is connected to the side frames 24 and 25 in front of the type disk 12 at both of its opposite ends Is, as a guide for the document 17 along a path _f which extends from the guide plates 22 and 23 to below the edge of the type disk 12. A rear reference plate 30 is attached behind the front reference plate 29 in a horizontal position below the type disk 12. The front edge 31 of the rear cover plate 30 is so far removed from the rear edge 32 of the front reference plate 29 that there is a uniform gap 33 for one print line across the entire machine and across the feed path for the document 17. This gap 33 is such Aligned in hezuq with the edge of the type disk that the seeharr types 16 can reach the upper surface of the document 17 when it lies at the gap 33. The gap 33 essentially defines the location of a print line for the type disk 12. The rear reference plate 30 is thereby horizontally arranged so that it is fixed with its outer edges with the. Seifcenrahmen 24 UNAE 25 in substantially the same manner as the front reference plate 29 and the guide plates 22 and 23,

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rait the exception that the rear reference plate 30 is attached in a manner known per se so as to be slidable forwards or backwards can be, so that the gap width of the gap 33 can be precisely adjusted to ensure that the type fingers of the type wheel 12 are deflected past the front edge 31 of the reference plate 30 when deflected by the print hammer 13 can if the type disc 12-rotates. Another design feature of the reference plates 29 and 30 is that they are arranged between the plates 24 and 25 in such a way that their lower bearing surfaces 34 and 35 in a common plane which represents the recording plane for the document. As can be seen in particular from FIG. 1, the bearing surfaces are 34 and 35 of the reference plates 29 and 30, respectively, beveled slightly in an upward direction against the type disk. With With this bevel, the reference plates 29 and 30 form a fixed recording plane for the recording surfaces of the document With this arrangement, the document 17 can be very accurate in each case be aligned with respect to the type disk 12.

With the reference plates 29 and 30 cooperating with a movable pressure plate is provided, which preferably consists of a number of compressible plate sections 36, which are in turn attached to the movable end of a pressure rocker 37 which is movably mounted on an axis 38 which is between the side plates 24 and 25 is attached. The plate sections 36 are of suitable width and number so that they extend over the entire width of a document 17. The sections 36 are also chosen to be sufficiently wide that they also cover the pressure gap 33, so that when the pressure rocker is in its upper position, as shown in FIG. 1, the plate sections 36 press against the underside of the document 17, this ensures that the upper surface of the document 17 is firmly pressed against the bearing surfaces 34 and 35 for a width which is greater than the width of the printing nip. Since the bearing surfaces are slightly beveled, the upward pressure of the pressure rocker 37 and tries

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the plate portion 36 slightly deflects the document 17 to form a convex recording surface for impact by the character types "of the type disc 12. The sections 36 are preferably in lateral contact with one another over the entire length of the plate, but are designed so that the individual plate sections pressed together at different locations along a printing line by a different amount there should be differences in the ceiling in the document to be printed. This is particularly effective for and good alignment of the document 17 is desirable if it is a bank book or passbook that is based on a Page is open in which there are significantly more sheets on one side of the bank book than on the other side. The pressure rocker 37 with its plate sections 36 is reciprocated with respect to the reference plates 29 and 30 by a JSiocke 39 moved here, which runs on the edge of an eccentric cam disk 40 which is seated on a shaft 41, which in a suitable manner is mounted on the side plates 24 and 25. There are various possibilities, such as the position of the pressure rocker 37 can be displayed. In the present case, a reed relay 119 is provided there, which is attached to the side plate 24. An actuating magnet 12Ο sits at one end of an arm 121 which is attached to the drive shaft 41 for the rotation of the arm 40 is. The reed relay 119 and arm 121 are arranged so that that the relay is actuated by the magnet 120 when the cam disk 40, the pressure rocker 37 in its upper rest position moved.

Front and rear conveyor rollers are also provided for feeding and ejecting the document. The front one The group of conveyor rollers consists of the upper conveyor roller 42 and the lower conveyor roller 43. The upper conveyor roller 42 is arranged between the rear edge of the front guide plate 23 and the front reference plate 29. The upper conveyor roller 42 is preferably a solid cylinder rotatably mounted on a shaft 44 between the side plates 24 and 25.

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The lower conveyor roller 43 is according to a feature of the invention from a series of conveyor roller disks 45 on a common shaft 46. The conveyor roller disks 45 preferably have a uniform distance from each other and are aligned with the rectangular openings 27 in the lower guide plate 22 aligned the full length of the shaft 46 and frictionally engaged at various points across the full width with the lower surface of the document 17. The feed roller discs 45 are preferably elastic and can be compressed and can thus adapt to the different thicknesses adjust the width of the document 17. For example, if the document 17 on the left side, as seen in Fig. 2, has more pages than on the right side, then the conveyor roller disks deliver 45 on this side of the conveyor roller 43 compensates for the different thicknesses in that they are more strongly compressed are called the conveyor roller disks 45 on the right side of the conveyor roller 43. This balance also ensures that the Document is conveyed forwards without tilting in spite of different thicknesses, while at the same time the exact lateral alignment with the printing line gap 33 is maintained.

The rear group of conveyor rollers consists of an upper conveyor roller 90 and a lower conveyor roller 93. The upper conveyor roller 90 is located behind the reference plate 30 above the path of the document 17. The upper conveyor roller 90 is made like the conveyor roller 42 made up of a solid cylinder which is mounted on a shaft 92 which is in the side plates 24 and 25 is stored. The lower conveyor roller 91 consists of a number of spaced-apart compressible resilient disks 93 mounted on a rotatable shaft 91a.

As already mentioned, the document 17 is first manually inserted into the machine before the automatic conveyance through the conveyor rollers 42 and 43 as well as 90 and 91 are used. For a manual insertion of the document 17, the front conveyor rollers 42 and 43 in an open and a closed position

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be movable. For this purpose, the shaft 46 of the conveyor roller 43 is supported at its outer ends in a pair of support plates 47 and 48, which, together with the pressure rocker 37, about the axis 38 are pivotably mounted. The support plates 47 and 48 support the conveyor roller 43 and allow the lifting and lowering of the Conveyor roller 43 with respect to the conveyor roller 42 for engagement with the surface of the document 17 and in cooperation with the upper conveyor rollers 42 for 'transporting or conveying the document 17 with respect to the type disc 12. In the preferred Embodiment of the invention is the rear conveyor roller also raised and lowered. To this end is the wave 91a of the feed roller 91 on a pair of rear support plates 185 and 186, which are mounted pivotably on an axis 187. According to the present invention, the lifting and lowering of the feed rollers 43 and 91 into driving engagement with the document 17 caused by the pressure rocker 37. Su this one For this purpose, the support plates 47 and 48 have tongues 50 and 51, respectively, which are located at opposite ends in the vicinity of the plate sections 36 are engaged with the upper surface of the kndruckschwinge 37 and which also extend backwards under the Lugs 188 and 189 of support plates 185 and 186, respectively, extend. For the supply, the feed rollers 43 and 91 are controlled by a locking plate 52, which is pivotably mounted on a shaft 53, which in turn is attached to the side plates 24 and 25, in locked in their upper position. The locking plate 52 is with a bolt 54 with the end of a reciprocating Rocking lever 55 connected, which via a pin 56 with the plunger 57 for a reciprocating actuation by an electromagnet 60 attached to the side plate 24 is connected. Sine coil spring 59 is on the one hand with the Rocker arm 55 and, on the other hand, fastened with a pin 69 in the side plate 24. The locking plate 52 is through the rocker arm 55 actuated under the biasing force of the coil spring 59 and pivoted counterclockwise to engage with of the Sfcützplatte 47, as seen in Fig. 1, when the support plates 47 and 48 are raised by the change pressure rocker 37. If the

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When the support plate 47 is locked by the lock plate 53, the feed roller 43 is in driving connection with the document 17 held while the pressure rocker 37 can swing freely about the axis 38 and by the rotation of the Cam plate 40 is movable back and forth.

As already indicated, the manual insertion of the document 17 made when the pressure plate and the conveyor rollers 43 and 91 are in their lower position, as shown in FIG. At this point in time, the cam 39 is in the lower dwell section of the cam disk 40 and the pressure rocker 37 have fallen into their lower position, so that the plate sections 36 have detached from the reference plates 29 and 30. When document 17 is loaded, it moves between the front feed rollers 42 and 43 and below the bearing surfaces 34 and 35 of the Reference plates 29 and 30. At this point, the leading edge of the document 17 held up by a stop mechanism which is arranged in the path of the moving document 17 is. The stop mechanism can be constructed in various ways, but preferably consists, as can be seen in Fig. 2, from the stop fingers 61, 62 and 63, which are attached to a pivot axis 64 rotatably mounted in the side plates 24 and 25 are. The stop fingers 61, 62 and 63 are connected to the pivot axis 64 by means of an adjusting ring 65 and a locking screw 66 attached so that the stop fingers between the two side plates 24 and 25 are adjustable in any position. In order to you can also adjust the stop fingers 61, 62 and 63 to documents 17 of different widths. A pivot arm 67 is also attached to the pivot axis 64 and extends downwardly into engagement with the bolt 58 on the reciprocator Rocker arm 55. A helical spring 68, which is inserted between the swivel arm 67 and the rocker arm 55, tensions the swivel axis 64 against the pin 58. Therefore, when the solenoid 60 is selectively energized and de-energized, the plunger 57 moves the Rocker arm 55 back and forth, so that the pin 58 swings the swivel arm 67 back and forth, whereby the swivel axis 64 the stop fingers 61 to 63 lowers and raises.

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As mentioned before, the stop works together with the rear Reference plate 30 a precise alignment of the document 17 with respect to the type disc 12. Thus, the location and size of the Stop fingers 61, 62 and 63 are selected so that the leading ends of the fingers that are in contact with the leading edge of the document 17 in Come into engagement, have a predetermined distance from the front edge 31 of the reference plate 30. This distance corresponds to Distance of the leading edge of the document from the first print line position on the document. So in any case the Stop mechanism for precise determination of the position of the document 17 from this in the first print line position, independently whether the imprint should be in the first print line or not. From this position it is relatively easy to Via the conveying device, the document 17 is transferred to the next available print line and every other subsequent print line for recording data by the printing device 11 move on.

So that the conveyor rollers automatically step the document 17 The stop fingers must be able to convey past the pressure gap 33 61 to 63 are rotated counterclockwise to reveal the leading edge of the document 17 after manual insertion. A document detector for sensing the presence of the leading edge of a document as it hits the stop fingers 61 to 63 can be constructed differently, but in the present case preferably consists of a movable switch rod 70 and a limit switch 71 on the middle stop finger 62 is attached. A plunger 72 is biased outwardly against the end of the shift rod 70 in such a way that then, when no document is applied to the stop fingers 61 to 63, the switching rod 70 by a small distance above the common Line of the leading edge of the stop finger 61 to 63 is moved out. Then there is a document 17 between the horizontal guide plates 22 and 23 has been fed by hand to a point where it is pushed through under the reference rails 29 and 30, the leading edge of the document first matches the leading edge

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End of the shift rod 70 come into engagement. If the document 70 is moved further by inserting it by hand, then the switching rod 70 is pressed against that exerted by the switching plunger 72 Force pushed backwards to a point at the stop at the front ends of the stop fingers 61 and 63. As a result but the limit switch 71 is actuated, which then switches on a stepping motor which turns counterclockwise rotates and actuates the drive means so that also 'the camshaft 41 rotates counterclockwise and the pressure rocker 37 lifts. This raises the plate sections 36 and the lower feed roller 43 to the position in which they hold the document 17 against the lower bearing surfaces 34 and 35 of the reference rails 29 or 30 and against the upper conveyor roller 42, as can be seen in FIG. When the conveyor roller 43 is in its upper Position is, the locking plate 52 is released from the position shown in Fig. 4, rotates by the force of the coil spring 59 counterclockwise under the lower edge of the plate 47, as can be seen in FIG. Through this process becomes the conveyor roller 43 locked in its upper position, in which the conveyor roller disks 45 in frictional engagement with the lower Surface of the document 17 come. At the same time the rocker arm 55 is moved to the right, the pin 58 strikes against the articulated lever 67, which rotates the hinge axis 64, as shown in Fig. 4, lowers the stop fingers 61 to 63 and the Shift rod 70 removes it from contact with the leading edge of the document 17. Are the. Stop fingers 61 to 63 off unscrewed their engagement with the leading edge of the document 17, the document is now in a position that a first print line of the data to be printed can be recorded in the first print line position if this is done by ' external control devices (not shown) is required. In the event that the first line of data to be recorded is in the next free print line is to be recorded, first no pressure take place, and the drive devices are controlled so that the pressure rocker 37 by rotating the cam disk 40 on the shaft 41 counterclockwise in

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a position is rotated in which the cam is from its highest Position goes into its lowest position.

As already mentioned, the drive device according to the invention consists of a drive acting in two directions, the the cam disk 40 rotates for a reciprocating movement of the pressure rocker 37 and in a second direction the Driving conveyor roller 43, which moves the document 17 step by step in predetermined printing positions with respect to the printing nip 33. The drive device for this consists of a bidirectional stepper motor 75, which is attached to the side plate 25 in a suitable manner. The drive connection for the Cam pulley 40 consists of a pulley 77 on camshaft 41, a drive belt 78 and one on the drive shaft 76 of the motor 75 attached pulley 79. The pulley 79 has an overrunning clutch, so that when the The drive shaft 76 of the stepping motor 75 rotates clockwise, as can be seen in FIG. 1, the pulley 79 rotates freely and there is no clockwise rotation of the shaft 41 and the cam. Will the stepper motor 75 counterclockwise actuated, then the motor shaft 76, which also rotates counterclockwise, causes the clutch and Drive pulley 79 come into engagement and drive belt 78 and drive pulley 77, the drive shaft 41 for the Drive cam 40. A mechanical lock consists of a cam disk 89 which is attached to the drive shaft 41 is, and a cam 99 on a locking arm 115 which is pivotable is mounted on the side plate 25. A coil spring 116 is attached to the side plate 25 and the lock arm 115 and keeps the cam 99 in contact with the edge of the cam. The cam 89 has two cam tracks 117 and 118 which are precisely aligned with the high and low cam positions of the cam 40.

The conveyor roller 43 becomes clockwise and the conveyor roller 42 driven counterclockwise to feed the document 17 past the nip 33. To this end is the wave EN 972 O6O

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46 of the conveyor roller is connected to the motor shaft 76 via a second drive connection. This second drive connection exists the end. a drive roller 80 on the shaft 46, a drive belt 81 and a drive roller 82 on the shaft 76 of the motor 75 (see Fig. 2). A gear 84 on the shaft 76 of the drive motor 75 drives a gear 83 on the side plate 25, the drive roller 86, drive belt 87 and drive roller 88 of the shaft 44. The drive roller 82 is provided with a one-way clutch, which allows this roller to rotate freely around shaft 76 when it rotates counterclockwise, but with shaft 76 in Engagement occurs when the motor rotates clockwise and the drive roller 80 to drive the shaft 46 in a clockwise direction drives. An electromechanical lock (not shown) can also be provided for the shaft 46 of the conveyor roller 43. The drive rollers and drive belts can be in different Be designed in a way, but preferably have gear-like teeth in the identically shaped teeth of the toothed belt intervene, so that there is a precisely working drive connection.

The shafts 92 and 44 are connected by pulleys 95 and 96 through a toothed belt 94, and the shafts 91a and 46 are Connected via drive pulleys or drive rollers 119 and 114 via a toothed belt 98. A coupling is on the carrier plate 85 84 attached, which is intended to prevent the roller 91 from yielding under the bias of the ejector spring 106.

Behind the rear feed rollers 90 and 91 is an eject mechanism arranged for the document, with an ejector arm 100, which can be pivoted on a pin 110 on an ejection carriage 102 is mounted, which slides along a guide rod 103 can move, which is attached to a horizontal shaft 104 with a clamping device 105. A coil spring 106 is attached to an ejection bracket 107 on the clamping device 105 and biases the ejector carriage in the forward direction, where it strikes against the flange 108 of the clamping device 105. Will the document

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17 promoted to behind the conveyor rollers 90 and 91, comes the Front edge of the document with the ejector arm 100 in front of the groove in touch. There is a document guide behind the rear conveyor rollers 11O provided with an elongated groove 111 which ensures that the ejector arm 100 and the document 17 are in moved a specified path behind the rear conveyor rollers. When the promotion of the document has ended, then has the ejector carriage 102 with the ejector arm 100 along the rod 103 moved to the rearward position, whereby the coil spring 106 is tensioned. At this point in the duty cycle of the Machine, the pressure rocker 37 is lowered from its upper position to the lower position of the cam disk 40. Of the Electromagnet 60 is energized, causing plunger 57 to move to the left. This causes the lock plate to move 52 and releases the carrier plate 47, as a result of which the lower conveyor roller 43 then falls off. Due to the pretensioning force of the ejector spring 106, the ejection carriage 102 moves along the rod in the forward direction and moves the document to a position on the front guide plate 22 beyond the front feed rollers 42 and 43, so that the document can now be removed by hand. The ejector arm is 100 µm for particularly long documents rotated the pin 101 on the carriage 102 by approximately 180 degrees. In this condition is the groove 112 on the ejector arm 100 with the Document groove 111 of the rear guide 110 aligned and comes into engagement with the leading edge of the document 17 when it is conveyed in the guide 110 over a greater distance will. The same workflow results for moving the ejector carriage, as already described, if the document the ejection carriage 102 against the bias of the coil spring moved to a position further back.

As already described, a reversible direction is used in the invention Motor 75 is used, which moves the pressure rocker 37 back and forth when rotated counterclockwise and at Clockwise rotation drives the feed roller 43, which the document 17 according to different print lines with respect to the

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Printing nip 33 and the printing device 11 promotes. As can be seen from FIG. 5, the motor 75 is reversible in its direction of rotation Stepper motor with two groups of windings 122 to 125 arranged in pairs, which are individually connected to driver circuits 126 to 129 are connected, which in turn are connected to a logic circuit 134 via lines 130 to 133, in which the direction of rotation is determined. A control oscillator 135 is connected to one input of the logic circuit 134, which outputs clock pulses to the logic circuit 134, which the driver circuits 126 to 129 for exciting the windings 122 to 125 of the stepping motor 75 operate. Further, as can be seen from Fig. 5, the oscillator 135 and the logic circuit become 134 for the operation of the motor 35 in one or the other direction of rotation through a group of interlocking circuits 137 formed to 141. The latch circuits 137, 138, 140 and 141 control the counterclockwise rotation of the cam disk 40. To this end, the outputs of latches 137, 138, 140 and 141 are across lines 142-145 the OR circuit 146 and a line 147 connected to the CCW input of the logic circuit 134. The output of the OR gate Circuit 146 is also connected to oscillator 135 via line 148 and OR circuit 149. The interlock circuit

137 directs the rotation of the cam 40 by the stepper motor 75 counterclockwise when a signal arrives from limit switch 71 via line 150 that the Indicates the presence of a bank book. The interlock circuit

138 controls the rotation of the cam 40 counterclockwise, when the pressure rocker 37 is on top and this is to be lowered, so that the document 17 has a further print line position can be fed. For this purpose, the setting line 151 of the latch circuit 168 is connected to an external one Source, such as the central unit of a data processing system, and receives from there a command for step-by-step Onward conveyance of the document 17. The interlock circuit 141 controls the rotation of the cam disk 40 in the counterclockwise direction to lower the Andruckschwinge 37, if of the

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Central unit receives a signal indicating that the gesarate Printing is completed by a signal is generated on line 152, which indicates the end of the printing process. The exit the latch circuit 141 is also connected to the eject solenoid 60 connected. The interlock circuit 139 controls the clockwise rotation of the feed roller 43. To this The purpose is the output line 153 with the input CW of the logical Circuit 134 connected. The output of the interlock circuit 139 is also connected to the oscillator 153 via the line 154 and via an OR circuit 149. The interlock circuit 139 has its setting input connected to the reset output of the interlocking circuit 138 via a line. The interlock circuit 139 has its reset output via line 156 to the setting input of the interlock circuit 140 connected. The latch circuits 137 and 140 are reset by a signal from the reed relay switch 119, which arrives via the reset line 157.

As already described, the motor 75 can be driven stepwise by a fixed number of steps when it engages the cam disk 40 drives counterclockwise and is stepwise driven by a variable number of steps when the document 17 is moved forward via the rotation or rotation of the conveyor roller 43. For this purpose a counter 158 is provided which is connected to the oscillator 135 via line 136. The counter 158 is on the line 136 incoming oscillator pulses triggered when the oscillator simultaneously sends clock pulses to logic circuit 134 for the two directions of rotation of the motor 75 outputs. The counting status of the counter 158 is determined by the comparison stages 159 and 160. The comparison level 159 is designed so that it emits a signal when a predetermined count is reached in counter 158, this count corresponds to the number of pulses that are required to make the cam disk 4O so far rotate so that the cam 39 moves on the cam disk 40 from the upper position to the lower position. If this

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When the count is reached, the comparison stage 159 generates a signal on the line 161 that the resetting of the interlocking circuits 138 and 141 is used. The comparison stage 160 is designed to generate a signal when the counting state of the counter 158 corresponds to a counter reading previously set in the comparison stage 160 via data, which via the data acquisition line 162 were delivered by the central unit. If the counter 158 is the stored in the comparison stage 160 When the count is reached, a signal is generated on line 163 which resets the latch circuit 139. Of the Counter 148 is via a line 164 through a monostable Toggle circuit 165 reset, either via a command "conveying", a signal "end of printing" or a Signal for the bank book movement is actuated, which is fed via the OR circuit 166 .wird.

The details of logic circuit 134 are shown in FIG. The directional logic of Figure 8 consists of a pair binary flip-flops 190 and 191, which have a common Input line 136 are connected to the oscillator 135. The outputs of the flip-flops are on lines 130 to 133 connected to drivers 126 to 129. When the flip-flops 190 and 191 are controlled by clock pulses arriving from the oscillator 135 via the input line 136, so generate they on their output lines 130 to 133 pulse combinations according to the following table:

A. B. A. B. O O 1 1 1 0 0 1 1 1 0 0 0 1 1 0 0 0 1 1

As can be seen from this truth table, the bistable Flip-flops 190 and 199 by those from the oscillator

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incoming impulses on their common input lines are controlled in such a way that that they are on the output side on lines 130 to 133 for the drivers in the sequence from top to bottom generate signals that the operation of the motor to drive the cam disk 40 in the Effect counterclockwise. For driving the stepping motor 75 clockwise to convey the bank book 17 the flip-flops 190 and 191 become the reverse Sequence switched from the bottom of the table to the top. The logic circuitry that directs this sequence of operations control in which the bistable flip-flops 190 and 191 are switched contains an OR circuit 192, the output of which is connected to the second input of the flip-flop 190 and an OR circuit 194, the output 195 of which is connected to the second input the flip-flop 191 is connected. A the rotation of the The cam disc determining signal on the line 147 is fed to the first input of the AND gate circuits 196 and 198, the are connected through OR circuits 192 and 194 to flip-flops and 194, respectively. In the same way becomes one of movement the bank book signal on line 153 from the interlock circuit 139 fed to the first input of the AND gate circuits 197 and 199, the output side via the OR circuits 192 and 194 are connected to flip-flops 190 and 191, respectively. These two signals are passed through on the output lines 130 to 133 lying signals via a feedback loop with the AND gate circuits 200 and 201, their outputs are connected to the OR circuit 202, which in turn are connected to the second inputs of the AND gate circuits 196 and 199 are switched through after the flip-flops 190 and 191. An inverter stage 203, which is connected to the OR circuit 202 provides an inverted feedback signal to the second inputs of AND gates 197 and 198. How from Referring to Figure 8, inputs 204 and 205 are the feedback AND gate 201 connected via lines 130 and 132 to flip-flops 190 and 191, respectively. In the same way is the feedback AND gate 200 with its input lines 206 and 207 with output lines 131 and 133, respectively

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Flip-flops 190 and 191 connected. With the one shown in FIG Circuit arrangement is the signal appearing on line 147 for a rotation of the cam disk 40 by the flip-flop circuits 190 and 191 switched through, so that these accordingly of the truth table, read from top to bottom. A signal to move the bank book on line 153 is in the Way switched through by the flip-flops 190 and 191 that these are switched by pulses coming from the oscillator 135 in the sequence shown in the truth table, if one this reads from bottom to top.

The mode of operation of the machine will now be briefly described in connection with the timing diagram shown in FIG will. Initially, the cam 39 lies in the lower section of the cam disk 40. The stepping motor is at this point in time 75 not energized and shaft 41 does not rotate. The pressure rocker 37 is in its lower position together with the conveyor rollers 43 and 91, as can be seen in FIG. The electromagnet 60 is not energized. After introducing a bank ^ book or passbook, the leading edge of the document 17 passes between the conveyor rollers 42 and 43 and the reference rails 29 and 30 into the machine until this leading edge comes into contact with the switching rod 70, which is then pressed against by the plunger 70 caused bias is shifted until a stop on the stop fingers 61 to 63 takes place, which are in their upper position (Fig. 1). By closing the limit switch 71, a signal 170 on the setting line 150 of the Latch circuit 137 is generated which indicates the presence of a bank book. When the latch circuit 137 is set, it generates a "camshaft rotation" signal on the Output line 172, which is connected through OR circuit 146 and line 147 after the input CCW of the logic circuit 134 is running. That the signal causing the cam to rotate also passes from the OR circuit 146 via line 148 to the OR circuit 149 and. Switches on the oscillator 135, which emits impulses via the line 136, which act as step switching impulses

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Circuits 190 and 191 are fed and the drivers 126 to Press 129 in the order given in the truth table shown earlier. The stepper motor 75 starts counterclockwise to rotate and drives the shaft 41 counterclockwise via the drive roller 79, drive belt 78 and drive roller 77 at. If the cam disk 40 is rotated by the stepping motor 75, then the ftocke 39 lifts the pressure rocker 37 and the Conveyor rollers 43 and 91, as indicated by curves 180 and 181 is shown in FIG. The pressure rocker 37 is raised until the cam 39 is in the upper section of the cam disk 4O comes to rest. Is the carrier plate 47 by the pressure rocker 37 is raised, then the locking lever 52 is released and rotates counterclockwise about the pivot point 53 by moving the rocker arm 55 to the right. due to the Spring tension of the spring 59. This movement locks the conveyor rollers 43 and 91 in their upper position. The shift of the Rocker lever 55 also causes the arm 67, the stop fingers 61 to 63 and the switching arm 7O out of engagement with the Front edge of the document 17 rotates out, whereby the limit switch 71 opens and the signal "bank book present", which is applied to the interlocking circuit 137 via line 150, drops. Simultaneously with the reaching of the upper rest position by the plate, the actuating magnet 119 on the arm 120 actuates the reed relay 118 to generate a signal 174. This signal sets the interlock circuit 137 returns via line 157 and switches that via line 147 at the input CCW of the logic circuit 134 "Turning cam disk" signal is present. The fall of the "rotating cam" signal 172 causes the motor 75 to stop to run. At the same time, the cam 99 on the locking lever arm 115 falls into the cam track 116 on the cam disk 89, which is also attached to the shaft 41. This inevitably prevents any further rotation of the cam disk 41 and the pressure rocker 37 held in its upper position. This signal 174 is also fed to the central unit and shows there that the pressure plate is up and the bank book 17 is is in the print position for the first print line. To this

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At this point, the central unit can use the printing mechanism to print in the first line. If no pressure is planned, then delivers the central unit sends a signal "conveying document" on the input line 151, which sets the interlock circuit 168, which then generates a signal 172 "rotating cam disk" on the out line 143, which is the input CCW of the. logic circuit 134 is forwarded. At the same time, the oscillator 143 is switched on. As a result, the cam disk 40 is in the Rotated counterclockwise, as already described, whereby the iMocke 39 moves into the lower cam track of the cam disk 40. When the oscillator 135 supplies control pulses, the stepping motor 55 is controlled via the logic circuit 134 and the Drivers 126 to 129 activated, the counter 158 is incremented. tet and compared its output signal in the comparison stage 159, which is set to count a predetermined fixed number of pulses equal to the number of pulses to advance of the motor to rotate the cam after the lower dwell position corresponds to the number of pulses required. The comparison level 159 generates a signal 178 which over line 161 resets the latch circuit 138. This will make the Logical circuit 134 lying signal "rotate cam disc" removed, whereby the oscillator 135 is blocked. The stepper motor 75 stops, as does the cam disk 40 and the cam 99 falls into the cam track 117 of the cam disk 99 and forces the shaft 51 to be positively locked against further rotation. If the latch circuit 138 is activated by the Line 161 resets incoming signal 178, then a set pulse on line 155 sets the latch circuit 139 a, which emits a signal "movement bank book" via the output line 153 to the input CW of the logic circuit 134. This signal is also passed on via line 154 and OR circuit 159 and switches on oscillator 135, which is now Control pulses via the line 136 to the logic circuit 134 emits. Before setting the interlock circuit 139 is a signal for setting via data bus 162 the comparison stage 160 to a specific counter reading

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received. This count represents the number of steps that the stepper motor 75 must perform in order to keep the bank book in the next available print line. When the stepping motor 75 turns the feed roller 43 clockwise drives, then the oscillator pulses driving the stepper motor appear on line 136 and switch the counter 158 next. If the count of the counter 158 corresponds to that in the comparison stage 160 is equal to the stored counter reading, a signal occurs on the output line 163 of the comparison stage 160 176, which indicates this equality, and resets the latch circuit 139, so that the logic circuit 134 and the gate circuit 149 applied signal 171 drops, whereby the oscillator 135 is switched off. The provision of the Latch circuit 139 provides a setting signal on the Line 156 for interlock circuit 140. When setting the locking circuit 140 is a signal "rotating cam disk" on line 144 via OR circuit 146 and line 147 to input CCW of logic circuit 134. That The "Rotate cam disk" signal is again sent via an OR gate circuit 149 is supplied to the oscillator 135 and switches it on. The stepping motor 75 rotates the cam disk 40 in turn and raises the pressure plate as shown in curve 180 is. A signal from the reed relay switch 157 indicating the upper end position sets the interlock circuit 140 back, whereby the signal "rotating cam disk" drops, so that the oscillator 135 and the motor 75 are switched off.

If desired, a number of lines of data on successive lines of a bank book or document 17 To print, the workflow just described is repeated. The command "line feed" on line 151 provides the latch circuit 138 which turns on the oscillator 135 and generates a "rotate cam" signal which rotates the stepper motor counterclockwise. The comparison stage 159 resets the latch circuit 138 when the The cam has turned so far that the pressure rocker

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37 drops into its lower dwell position. This in turn generates a set signal on line 155 which sets latch circuit 139 which generates a "move bank book" signal, which drives the stepper motor, whereby the bank book is conveyed to the next print line. The comparison stage 160, the is set to the desired counter reading for the next print line position, a "counter reading equal" signal is generated on line 163, thereby resetting latch 139 will. This in turn generates a set signal on line 156 which sets latch circuit 140, which in turn generates a "rotating cam disk" signal on line 145 to raise the pressure rocker 37. The pressure is applied then, controlled by the central unit. When all print lines have been printed out, an "end of posting" signal 176 on input line 152 which is the latch circuit 141 sets. This generates a "rotate cam" signal on line 145, which in turn causes the cam to rotate 40 is initiated, which causes the pressure rocker 37 to fall into its lower dwell position. The output of the latch circuit 141 also serves to actuate the ejector electromagnet 60. This in turn actuates the plunger 57, which swings the rocker arm 55 to the left, as can be seen in FIGS. 1, 3 and 4. The arm 67 is then released and moves with the bias of the spring 68 and lifts the stop fingers 61 to 63. However, since a document 17 is present the stop fingers cannot be moved clockwise. The movement of the rocker arm 55 through the plunger 57 also gives the locking lever 52 a clockwise movement or rotation, thereby releasing the carrier plate 47 will. In this way, however, the conveyor roller can be lowered when the pressure rocker 37 moves from its upper dwell position goes to its lower dwell position. Are the conveyor rollers 43 and 91 and the pressure rocker 37 in their lower position, at which the ejection carriage 102 moves through the spring. 106 driven to the left, so that the ejector arm 100 moved the document to the left so that it was removed by hand

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can be. After ejecting and removing the document 17 the stop fingers 61 to 63 are released and can be lifted by the spring 68, which the arm 67 on the shaft 64 moved clockwise. With the removal of the document 17, the booking machine is now at rest and a new document can be created be inserted and run the procedure just described again.

EN 972 O6O

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Claims (8)

PATENTAK PROBLEMS Device for feeding documents to data processing Machines with a printing device at a printing station and means for automatically feeding the zu printing document relative to the printing station, with guide plates for receiving, supporting and guiding the document at the feed and a stop for setting the document in an initial printing position by a drive device (75, 79, 82) which can be driven in two directions and which, in one direction, the document to be pressed via a pressure device (36, 37) to print a line and in the opposite direction, when it is lifted Pressure device, a transport device (42, 43; 90, 91) effective for the advance of the document is able to make. 2. Apparatus according to claim 1, characterized in that the drive device has one in its direction of rotation reversible stepping motor (75), which via a clutch (82) effective in one direction of rotation the conveying device (42, 43; 90, 91) and via a coupling (79) effective in the other direction of rotation to the . Pressure device can be coupled. 3. Device according to claim 1 and 2, characterized in that that as a transport device conveyor roller pairs (42, 43; 9O, 91) serve, which alternate with the pressure device (36, 37) can be switched on. 4. Apparatus according to claim 1 to 3, characterized in that the pressure device consists of one of individual, flexible Sections (36) composed pressure plate and an associated pressure rocker (37) consists, EN 972 O6O 409850/0727 when coupled to the drive motor (78) via a Squat-cam lever connection (40, 41, 39) becomes v / effective, which is in its effective and in its inoperative position is lockable. 5. Apparatus according to claim 1-4, characterized in that in each case one of the conveyor rollers (43, 91) from a number on an axis (46, 91a) arranged at a distance from one another, compressible, bendable, elastic Discs (45, 93) consists, while the respective second conveyor roller (42, 90) has a cylindrical surface . 6. Apparatus according to claim 1 to 5, characterized in that in the operative connection between the in its direction of rotation reversible stepper motor and the cam drives for the pressure plate (36) or the conveyor roller pairs (42, 43; 90, 91) each one effective either in one or in the other direction of rotation, in each case is arranged opposite direction of rotation as a one-way clutch working clutch. 7. Apparatus according to claim 1 to 6, characterized in that both the pressure device (36, 37) and the elastic conveyor rollers (43, 91) can be brought into engagement against a spring bias. 8. Apparatus according to claim 7, characterized in that the lifting of the lower conveyor rollers (43, 91) by the The pressure rocker (37) is effected in such a way that the conveyor rollers via a lock (52, 53, 54, 55, 56, 57, 60, 188, 189) can be locked in their operative position. ErI 972 060 409850/0727