DE2456892C2 - Device for inserting and removing sheet material from microfilm readers - Google Patents

Description

3 4

a sheet feeder pointing between the on-it

location part in its initial position and the guide part F i g. 1 a perspective view of an invention

for feeding a sheet from the guide part to the upright device,

is positioned part or vice versa, the sheet F ig. 2 shows a side view of the device according to FIG

is inserted into the passage of the guide part 5 Fig. 1,

or can be taken from the same, FIG. 3 shows an electrical circuit diagram of the control circuit and a drive for moving the support part between the genes for the device of FIG. 1,
Starting position and the scanning position, Fig. 4 is a perspective view of another, a first switch, via which the feed device to the feeder is via a sheet inserted into the passage embodiment of the device according to the invention. 5a to 5c are individual views of the feed device guiding the sheet to the support part in its initial position of the device of FIG. 4, and
position is excitable, F i g. 6 shows an electrical circuit diagram of the control circuit and a second switch on dsm Aufjageteil, via which, if conditions for the device of FIG. 4th
the sheet is fed to the support part and through which the device according to the invention has, among other things, edge projections for positioning in position ge 15 rem the following details: a base 1, which is horibrächt, the movement of the support part to the position zontale rectangular guide plate 2, the Above which can be introduced for the scanning of the information, base 1 is supported by supports 2a which is below and a third switch is provided, over which, when right angles from opposite Seider support part reaches its starting position again, tenranden of the plate 2 extend downwards and am has, the Zufühningsemrichtung is so excitable that the 20 base 1 are attached. A second guide plate 3 at a short distance to and through which the drive of the feed device is attached. Two vertical bearings can also be interrupted when the support part is removed from its supports 7a and Tb is moved away from two feed roller starting positions, the edge of the roller 4a and 4b being provided, the supports 7a and 7b , part of which the sheets are fed from, edge 25 in a suitable manner at a distance from one another on the protrusion-free . Base 1 each near the front edge of the

In the device according to the invention, the plate 2 needs to be attached and parallel to its side edges

Sheet are no longer arranged exactly on the sheet support part in place. A small support 20a that extends from the

ment to be brought, it only has to extend upwards on a surface of the base 1, is used for

Guide part are placed, with it on the exact 30 holding a microswitch 20. A rectangular Sok-

Position of the microfilm sheet does not arrive

the guide part can be dimensioned in such a way that holding devices (not shown) are mounted in such a way that

even after laying on or in the position to release, that they are moved back and forth in the horizontal direction

take the microfilm sheet over the microfilm sheet. The surface of the base part 8 has the same

the guide part protrudes so that it is easier to reach the height as the guide plate 2 and the line at which

places or can be removed without pressure touching the rollers (feed rollers) 4a and 4b,

must be exercised. In this way, not only is there also is on the surface of the base part. 8 a

easier insertion; Rather, the support plate 9 is also attached. A pressure plate 10 is

mentioned scratches avoided. pivotally attached to the Sockelteii 8 so that with her the

Individual features of the device can already be covered from 40 Ali'lageplatte 9.

Devices known, however, have a different The two rollers 4a and 4b, which are parallel to each other

Have structure and purpose. A previously known reader are arranged and touch each other, are loaded on waves

for sheet-shaped recording media (DE-AS strengthens the ends in the supports 7a and Tb

18 15 762) is rotatably mounted for reading and further transport. To which the camp stems

Microfilm cards are provided in which the image area 45 ze 7a extending ends of the shafts are gear wheels

is surrounded by a reinforced edge area. so that the 6 and 6 'attached, which are in engagement with each other,

the handling of these cards essentially in such a way that the drive of one roller 4a and 4b to the other

Edge area can be done so that the microfilm image is transferred.

itself is not damaged. In addition, the dressing is one of the roles, z. B. the roller 4a, is not directly driven by nerung in this type of microfilm cards 50 a reversing motor 5, the z. B. on the Austark as with the microfiches, for which the inventive bearing support Tb or a device not shown is intended so that the reader is attached to the previously ordered part
Known reader less demands on the ge The guide plate 2 has approximately the width of an accuracy of the positioning can be made. Microfilm sheet $ and is a little shorter than the same. Another previously known device is an intake 55 It is used to supply or remove microfilm sheets 5 to or from the RoI ■ mevorrichtung for banknotes (DE-OS 17 74 148), at len 4a and 4b , each of the to Examining banknotes more or after the direction of rotation of the motor 5 a microfilm sheet S niger continuously conveyed through the testing devices from the plate 2 to the support part 9 or are changed. Since the bills are not as stiff as remove the same. The plate 2 has a flat, high-quality microfilm sheet, fewer requirements are placed on the gezontal surface at the level of the line of engagement of the positioning accuracy and the rollers 4a and 4b and a downwardly curved outer bank note are more or less continuous trans- trailing edge to be able to easily insert the microfilm sheet 5, there is a completely different problem or to be able to remove it. The leading edge of the plate matik, which is also with a completely different construction 2 is located in the vicinity of the rollers 4a and 4b. The account is taken. 05 arranged above the guide plate 2 second Ftih-

The device according to the invention is in the following plate 3 is approximately half as wide as the plate 2

On the basis of exemplary embodiments, it has short right-angled at its side edges

ter explained in more detail with reference to the drawings. Edge sections on so that between the main part

between the second guide plate 3 and the plate 2, a small space is formed as a passage ρ for a microfilm sheet 5. The height of the passage ρ is preferably only slightly greater than the thickness of the microfilm sheet S. The edge of the guide plate 3 at the inlet of the sheet passage p, ie the end facing away from the rollers Aa and Ab is bent upwards to prevent the sheets from catching S to prevent entering the passage ρ. Inside, near one side of the passage ρ, there is provided a microswitch 18 which is operated by an insensitive edge portion of a sheet S passing through the passage ρ.

The plate 15 can be moved away from the rollers 4a and Ab to the optical system of the microfilm reader or back in the vicinity of the rollers Aa and Ab , namely by a drive, not shown. The platen 9 can accommodate a microfilm sheet 5; its upper surface is the height of the guide plate 2. On two of its edges, guide rails ii and \ 2 are arranged at right angles to the line of contact of the rollers 4a and Ab , thereby defining an area substantially equal to the size of a sheet of microfilm S. The edges the guide strips 11 and 12 are beveled in the vicinity of the support plate 9 in order to prevent a microfilm sheet 5 from jamming during transport to the support plate 9 or away from the same. The platen 9 can be made of a non-transparent material if an image of the contents of a non-transparent microfilm sheet is obtained by reflection. The support plate 9, on the other hand, is transparent if the projection is to take place through a transparent sheet of microfilm S. In this case, the carrier 15 and the base part 18 are designed as a frame which encloses openings which are at least the same size as the part of a microfilm sheet 5 containing the data. In the vicinity of the front edge of the platen 9, ie the edge remote from the rollers 4a and Ab , two positioning projections 13 and 14 are provided on the base 8, through which a microfilm sheet S is precisely aligned on the platen 9, the connecting line between the projections 13 and 14 is parallel to the outer edge of the support plate 9 The alignment takes place through the projections 13 and 14 only in the direction of the described transport movement of the microfilm sheet S, since the front edge of the microfilm sheet S is straight, the front edge of the microfilm sheet 5 points against it z. B. V-shaped notches, the projections 13 and 14 can also be used for positioning in the direction perpendicular thereto.

On the connecting line of the projections 13 and 14, a microswitch 19 is provided, which is operated by a microfilm sheet S which is completely placed on the platen 9; The drive device for the carrier 15 is actuated by this microswitch 19

At opposite corners of the outer edge of the base part 8, extension parts 8a are attached or integrally connected, to which pivot parts \ 0b of a part 10a of a pressure plate 10 are pivotably attached, which is transparent and weight-loaded or is made of a comparatively heavy material The microfilm sheet S can be clamped between the pressure plate 10 and the platen 9 when the pressure plate is moved downward. The Druckpiaitc can have cutouts so that it does not touch the projections 13 and 14 and the microswitch 19. The pivoting parts 106 of the part 10a extend over the height of the base part 8 so white! in addition, that the pressure plate 10 normally rests on the platen 9. The pressure plate 10 can be moved out of this horizontal position by the cooperation of a pin 16 connected to the pressure plate and a lever 17 connected to the device with a beveled end. The pin 16 only interacts with the lever 17 and lifts the pressure plate 10 when the carrier 15 is in the

ίο is close to the rollers 4a and Ab , so that the microfilm sheet can be placed on the support plate 9 or removed here. In this position of the carrier 15, an extension 15a, which is attached to the lower surface of the carrier 15, actuates the already mentioned microswitch 20.

Instead of the rollers 4a and Ab , two side rollers could also be attached to the plate 2 in such a way that they cooperate with one edge of the microfilm sheet 5 and are connected with another screen roll. In this case the rollers would only act on the edges of the microfilm so that the surface carrying the information does not come into contact with the side rollers, which further prevents the sheets of microfilm from being scratched.

The operation of the device is as follows. A sheet of microfilm S is pushed by hand onto the guide plate 2 and through the passage ρ to the feed rollers 4a and Ab , the rotary movement of which is triggered by the actuation of the motor 5 by closing the microswitch 18 through the sheet of microfilm 5 to At this point the carrier 15 is in the vicinity of the rollers Aa and Ab. The pressure plate 10, as shown in FIG. 2, the feed rollers 4a and Ab feed the microfilm sheet 5 to the platen 9 until the sheet contacts the projections 13 and 14 and the microfilm sheet S is moved away from the base 1 into the desired reading position. When the carrier 15 reaches the desired position, the drive device is switched off by operating a switch (not shown). During the movement, the pin 16 disengages from the lever 17, whereby the pressure plate 10 moves down onto the microfilm sheet S and holds it in place after the carrier 15 has started its movement, the projection 15a has also come out of engagement with the microswitch 20, whereby the motor 5 and the movement of the feed

so guide rollers 4a and Ab is stopped.

After the data have been read or otherwise used, the carrier 15 is moved back to the vicinity of the base 1 by closing a reversing switch (not shown), the backward movement being terminated by closing a switch, for example by the carrier 15. The extension 15a comes into contact again with the microswitch 20, whereby the motor 5 for driving the rollers 4a and Ab is switched on in the opposite direction. If the rear edge of the microfilm sheet S comes into engagement with the rollers, it is guided from the support plate 9 onto the guide plate 2 and through the passage ρ. The microswitch 18 is closed again. Has the trailing edge of the

Mikrofilrnbiaiies S moved a little beyond the rear, outer edge of the plate 2 so it can be removed by hand. After fully pulling out the microswitch 18 is opened again, whereby the

7 8

Motor 5 stopped and insertion and removal stopped. At the same time the capacitor Cl

end of a sheet. The Drehgeschwindig- charged by the relay B 0, which acts as a resistor

wedge of the feeder roll 4a and Ab is little in effect. In practice there is enough time to read the data

equal to the speed of movement of the carrier 15, always starting from the microfilm sheet 5 in order to

to fully load a soft engagement of the microfilm sheet S at the 5 sator Cl. If after reading

To allow return of the carrier IS. the data of the carrier 15 has returned is through Jam of a microswitch 18 and a microswitch whose extension 15a the microswitch 20 again

ters 19 can also be closed corresponding pairs of micro, which moves to the contact point 20a,

switches may be provided, the connecting lines thereby de-energizing the relay SO and the contact

the switch of each pair parallel to the contact line io BX can close, and the capacitor C1 can

of the rollers and the switches of each pair are electrically discharged through the resistor R 2 and the base

are connected to each other. of the transistor Ql supply an input signal, the

A control of the processes described above is thereby switched through and a trigger signal can be triggered by the in FIG. The circuit shown in Fig. 3 causes the gate of the thyristor Q to supply 2 if the capacitance referred to below. The control circuit has relays A 0, BO, and DO, discharge from the capacitor Cl simply through the corresponding contacts A 1 to A 3, B 1 and D 1 to a suitable resistance to the gate of the thyristor η . ·> are supplied to an actuation circuit for the motor Q 2. The thyristor Q 2 is now through-5, a signal generator ~ SC, which is switched by a capacitor, so that the relay D 0 is excited, the Kontor Cl, resistors R 2 to RA and a transistor 20 clocks D1 and D 4 closed , the contact D5 opened Q 1 is formed and a trigger signal is sent to the gate of a net and the changeover contacts D 2 and Z? 3 can supply to their thyristor Q 2 , with all these elements corresponding contact points D 2b and D 3b geten the voltage across lines L 1 and L 2 are closed by one. Thereby, a power supply not shown is supplied to the operating switch. Circuit of the motor is supplied with voltage and the motor 5 The circuit also has a changeover contact 25 is operated so that it drives the feed rollers 4a and 4b , which controls the operation of the relay BO , a reverse direction that the microfilm sheet S normally open contact 20a and pull a normal away from the carrier 15 onto the plate 2, with normally closed contact 206, and through the microfilm sheet 5 the microswitch 18, the microswitch 20 is actuated again. The actuation closes while it is in the passage ρ . When closing switching for the motor 5 has contacts D 2 and D 3 30 Ben of the microswitch 18, the relay Λ0 again, which re-energizes the contacts in the form of parallel lines A 2 and A 3 are closed and the switching contacts are formed and normally overall contact A 1 moves to its point of contact A \ b, connected to contacts D 2a and D 3a and normally so that the thyristor Q is short-circuited 2 and thereby open contacts D 2b or D 3b , which is switched off. The relay DO remains energized because it is driven motor 5 in the forward direction when 35 is still connected to the lines L 1 and L 2 via the changeover contacts D2 and D 3 through the relay DO contacts A 1 and D1, and the Engine 5

are not actuated and on the contacts Dia and continues to drive the feed rollers 4 "and Ab , us

D 3a are closed, and in the reverse direction to move the microfilm sheet S outwards until ■

is driven when the changeover contacts D 2 and D 3 whose rear edge over the outer edge of the plate 2 I

are actuated. 40 extends out by removing the microfilm sheet- ■

Before inserting a sheet of paper, the state of the tes S by hand can now turn the microswitch 18 | Open circuit as shown in the drawing, whereby, since the contact 5 is open, the relay ~

ie all circuit elements are in the unactuated closed-A 0 is de-energized. The contact A 1 therefore reverts to that

was in addition to the microswitch 20, which is back through the contact point A \ b , so that the relay DO

extension 15a of the carrier 15 is closed.

Driving a microfilm sheet S into the passage ρ will return borrowed states.

the microswitch 18 is closed and the relay A 0 In the case of a second in FIGS. 4 to 6 , the embodiment according to the invention actuated thereby activates the contacts A 1 to A 3 , in which, in addition, the power circuit for the motor 5 corresponds to the embodiment of FIG. 1 to 3 one is closed. The motor 5 drives the feed rollers 50 drive device provided for the motor drive, 4a and Ab in the forward direction, which pulls the microfilm remains during the movement of the carrier 15 of the back sheet S from the plate 2 to the platen 9. re edge portion of a microfilm sheet 5 with the rollers 4a While the contact A 3 is closed, the loading and Ab is engaged, whereby problems such as actuation of the rollers 4a and Ab maintained, post-positional shifts of the microfilm sheet S due to Videm the trailing edge of the microfilm sheet 5 has the micro 55 bration of the carrier 15 during its Rückkehrbeweschalter 18 passes which it opens when the supply can be avoided, which leads to that the Mi-microfilm sheet S completely the platen 9 züge- krofUmblatt 5 is not the in proper engagement with Rolling leads has been pressed the leading edge of the sheet, 4a and Ab comes out

as described above, the microswitch 19, whereby In the second embodiment shown in FIG

a driving device not shown for the Trä- 60, the feed rollers 4a and downs and the associated

ger is operated. When the carrier 15 of the gears 6 and 6 'rotatably on plates 7a' and Tb '

Feed rollers 4a and Ab moved away, the Mi is attached to the opposite sides

kroschalters 20 released by the extension 15a of the rear end part of the carrier 15 fixedly

and closes the contact 206, whereby the relay B 0 is stigt and extends vertically upwards from it.

is excited, whereby the contact B 1 opens Da- 65 ken, ie the feed rollers Aa and Ab do not change

by the excitation of the relay A 0 is canceled, its position relative to the carrier 15 and are in transverse

K on tact Λ 1 closed at the contact point A la, direction together with this away from the plate 2

the contacts A 2 and A 3 open and the motor 5 or moves back to this The shaft of one of the

Rollers 4a and 4b, for example the shaft of the roller 46, extends to the outside of the plate Tb ' and has a gear roller 4 attached to its outer end, which can be brought into engagement between rollers 23 and 27, which rotatably on ends of pivot levers 22 and 22 'are attached. The levers 22 and 22 'are fastened to a vertical plate 21 which is fastened to one side of the base 1 and additionally serves as a fastening part for the motor 5.

In the following, the F i g. 5a to 5c are referred to. One end of the lever 22 is pivotally attached to the output shaft 5 a of the motor 5 which extends through the attachment plate 21. At the other end of the lever 22, a pin 22a is rotatably attached to which the above-described roller 23 and a roller 25 are attached, the roller 23 and the roller 25 being on opposite sides of the lever 22. A roller 24, which is fixed on the output shaft 5a of the motor between the lifting! 22 and the Bcfesiiguiigsplaüc 21 is attached, is connected to the roller 25 by a belt 26, so that the rotational movement of the drive shaft 5a for forward or reverse drive is transmitted to the roller 23. One end of the other lever 22 'is pivotally attached to a pin 28 which is fixedly connected to the mounting plate 21, and at its opposite end a pin 22a' is fixedly attached, on which the above-described roller 27, which serves as a free wheel, The levers 22 and 22 'are connected by a tension spring 29, which pulls the levers 22 and 22' together as far as a separating element 30 allows, which has parts with small and large radius and between the levers 22 and 2? The separating element 30 is fixedly mounted on a shaft which is controlled by a rotating coil 31 mounted on the mounting plate 21. When the spinning coil 31 is actuated, the separator 30 is rotated so that the small radius parts contact the levers 22 and 22 'which are pulled by the spring 29 into positions in which they are attached to the ends of the levers Rollers 23 and 27 can come into engagement with the gear roller 4, as shown in Figure 5a, wherein the drive can be transmitted from the motor 5 to the rollers 4a and 4b. When the spool 31 is inoperative, the separator 30 is rotated so that the large radius parts contact the levers 22 and 22 "as shown in FIG Rollers 23 and 27 come out of engagement with the gear roller 4. The moving coil 31 is always actuated when the motor 5 is driven in both the forward and reverse directions.

In the following, reference is made to FIGS. 4 with the one above taken device described. At the beginning are the rollers 23 and 27, when the carrier 15 in the Proximity of the plate 2 is aligned but not engaged with the gear roller 4, however with this brought about simultaneously with the actuation of the motor 5 by closing the microswitch

18 by a microfilm sheet S is carried out, the through passage ρ occurs, the rollers 23 and 27 remain in engagement with the transmission roller 4, and the motor drive is further supplied to the feed rollers 4a and 4b until the front edge of the microfilm sheet S microswitch

19 reaches and thereby closes at the same time a drive device actuated for the carrier 15, the motor 5 is stopped and the moving coil 31 is de-energized, whereby the separator 30 is rotated to the lever

22 and 22 'move away from each other to move the rollers

23 and 27 to be brought out of engagement with the gear roller 4. In this state, opposing parts of the trailing edge of the microfilm sheet 5 are still engaged with the rollers 4a and 4b and remain engaged, whereby data from the microfilm sheet S is obtained throughout the time that the carrier 15 is moved to a desired position can be read, and the carrier 15 is moved back in the vicinity of the plate 2, thereby ensuring that the microfilm sheet 5 is then returned exactly to the plate 2. When the support 15 returns to the vicinity of the base 1, by closing the microswitch 20 through the extension 15a, the motor 5 and the rotating coil 31 are operated simultaneously, whereby the separating element 30 is rotated and, by the spring 29, the rollers 23 and 27, which are rotated at this moment by the drive caused by the motor 5, ιϊι engagement ü'iii the Gcificbcrüüc 4 are used, which takes care of the reverse drive of the rollers 4a and 4b to pull the microfilm sheet 5 from the holding board 9 onto the plate 2 . The reverse drive is continued until the trailing edge of the microfilm sheet S extends beyond the trailing edge of the plate 2, whereupon the microswitch 18 is opened again by manual removal of the microfilm sheet 5 so that the device is ready for a corresponding cycle of another sheet

In Fig. 6 becomes a circuit diagram of a control device

which is capable of exhibiting the above-described effects. It can be seen that the circuit is similar to that in FIG. 3, which opposite the capacitor Cl serving as a signal generator is charged by a resistor R 5 when the microswitch 20 is released and the relay SO is energized when the microswitch 19 is closed and the line L 2 has an additional loop L 2a in which in parallel with the actuating circuit the rotating coil 31 is provided for the motor 5, whereby the rotating coil 31 is excited when the motor 5 is operated for forward or reverse drive. The microswitch 19 is also connected to a drive device for the carrier 15 by means not shown. When a microfilm sheet S is inserted, the rotating coil 31 is energized by closing the microswitch 18, and the motor 15 drives forward until the leading edge of the microfilm sheet 5 closes the microswitch 19

so at the same time the relay BO energizes that the contact B 1 opens to de-energize the relay Λ 0. This opens the contact A 2 in order to stop the motor 5 and de-energize the moving coil 31. The rollers 23 and 27 fall thereby out of engagement with the transmission roller 4 and the carrier 15 moves in an intended position in a reading device when the carrier 15 returns to the vicinity of the base 1, by the action of the signal generator SG and the thyristor Q 2 causes the motor 5 to drive the roller 23 in the reverse direction and to energize the spool 31 to bring the rollers 23 and 27 into engagement with the gear roller 4, whereby the microfilm sheet S is pulled from the holding plate 9 and at the same time out of contact with the Microswitch 19 comes The Reiais SO is de-energized and the contact Bi. Closes, so that the relay A 0 can be excited to the

Effect of the motor 5 and the moving coil 31 upright

obtained when the microfilm sheet S the microswitch

11th

18 closes. After the microfilm sheet S has been completely removed from the plate 2, the opens again Microswitch 18, and the elements of the control circuit return to their original states.

In the embodiment according to FIGS. 5 to 8 is a displacement of the blade due to vibration, which occur due to the movement of the wearer, advantageously turned off, since the trailing edge of the microfilm sheet is held between the feed rollers.

An even further avoidance of destruction or wear and tear of the microfilm sheets can be expected if a pair of side rolls are used in place of the feed roll pair so that the microfilm sheets be guided by these side rollers, which act only on the sides of the leaves, whereby the surface the sheet on which the data is stored is not touched by the roller surfaces.

In other embodiments, the feed rollers, which stopped as described above Also, when the microfilm sheet has been fed to the carrier, they will not necessarily be are stopped, but rotate continuously.

25th

For this purpose 3 sheets of drawings

30th

35

40

45

Ϊ

60

"

Claims (1)

1 2 of feeding tubes (4a, 4b) and reversing motor (5) Patent address: when the support part (8, 9, 15) returns to the Starting position for driving the feed rollers l. device for inserting and removing (4a, 4b) in the forward and backward direction on sheet-shaped material in microfilm reading devices 5 with a movable sheet support part, the edge 4, device according to one of claims 1 to 3. projecting for positioning the sheet in a de- characterized in that at the pivotable defined position on the sheet support part and a pressure plate (10) for holding the sheets fS) a pivotable pressure plate for holding the blade parallel to the pivot axis pin (16) arranged ter on the support part when scanning is on the 10, the projection (17) attached to an inclined end portion of an information stored on the blade with displacement of the housing so together Has support part, the support part contributing to the fact that the pressure plate (10) pivots into the position for scanning a setting for scanning the information of the information on the approach of the device for holding the sheets between the support parts (8, 9,15) and at and a predetermined starting position to 15 leave this position from this Lben remove or remove a sheet is movable, is pivoted,
characterized in that a guide part (2,3) for the sheets (S) with a Passage (p) at the level of the surface of the support part (8,9,15) and in front of the same in its initial 20th position, The invention relates to a device for inserting a sheet feeder (4a, 4b, S), which between and removal of sheet material during mixing of the support part (8, 9, 15) in its initial film reading devices with a movable sheet support position and the guide part (2,3) for feeding part, the edge projections for positioning the sheet of a sheet (S) from the guide part (2,3) to the support part 25 in a defined position on the sheet support part (8,9,15) or vice versa is, where and a pivotable pressure plate for holding the sheets in the passage (p) of the guide part sheets on the support part when scanning the information stored on the sheet or removed from the same sheet can be shifted; of the support part, the support part having a drive for moving the support part (8,9,15) 30 means for holding the sheets between an initial position between the initial position and the scanning position for scanning the information and a position, predetermined initial position for receiving or a first switch (18) which can be moved by removing a sheet.
Passage (p) hinge infected leaf (~} d \ e feeding determined A known device of this type (US-PS means (4a, 4b, 5) for feeding the sheet (S) 35 34 42 581) for microfilm sheets, consisting of eizum the support part (8, 9, 15) in the initial position of which a single sheet of film can be excited without any special edge intensification, there is a second switch (19) on the support part (8, 9) with a large number of image fields (so-called microfiches) -15), via which, when the sheet on the Auflageteii sheets must be fed because of the necessary for reading and is brought into position for positioning by the edge projections (11,12, 40 strong magnification 13,14), The movement of the support part (8,9,15) to the position for the transparent printing plate, with which it can be initiated on the sheet for the information to be scanned, is used for this purpose.
and a third switch (20) is provided, via which the placing of the microfilm sheets on the sheet when the support part (8,9,15) is in its initial position 45 is not only complicated because the microfilm has again reached the feed device (4a , sheet must be inserted very precisely. There is also Sb, S) is so excitable that the sheet is fed into the passage the risk of damaging the micro film (p) of the guide part (2,3) and by manual insertion , since this sheet is the drive of the feeder {4a, 4b, is very sensitive. So it will often be necessary, 5) to be interruptible when the support part (8, 9, 15) 50 to move the placed sheet a little, from which its initial position has been moved. with one necessarily or involuntarily the mider edge of the support part (8, 9, 15), from which the krofilmblatt presses against the base, so that it can be fed into sheets, can be scratched out without protruding edges. In order to remove the microfilm sheet from the reading device, it must be moved again ?. Device according to Claim 1, characterized in that pressure is again exerted by hand draws that the feed device (4a, 4b, 5) is, so that here too the risk of scratching bc- provided with a pair of feed rollers (4a, 4b). hen that is parallel to and fixed with respect to the opposite is the object of the invention Support part (8,9,15) directed edge of the guide therein, a device for insertion and removal partly (2, 3) and arranged by a reversal 6ö of sheet material in microfilm readers gate (5) can be driven. to create, with which an automatic precise adjustment 3. Device according to claim I, characterized in that the sheets are marked relative to the platen indicates that the feeding device (4a, 4b, S) and scratches on the sheets when inserting or a pair of feed rollers (4a, 4b) that are most often avoided. Guide part (2, 3) directed edge area of the g5 The solution according to the invention sees durin that a Support part (8, 9, 15) are arranged, a Um-guide part for the sheets with a passage in height Sweeping motor (5) on the side of the guide part (2, 3), and the surface of the support part and in front of the same in a coupling device (22-30) for connecting its initial position,