DE2915785A1 - MAGAZINE, IN PARTICULAR MAGAZINE AND FEEDING DEVICE FOR COPY DEVICES - Google Patents

Description

DIPL.-INS. M. SC. ~ Dl PL: - "H Y S." D * P.

DlPL-PHYS. DR.

HÖGER - LEGAL LAW - G Rl ESS3ACJH- HÄÖCKER BOEHME

PATENT LAWYERS IN STUTTSART OQ 1 C7Q C

A 43,300 b Applicant: Savin Corporation

k - 177 Columbus and Stevens Avenues

April 17, 1979 Valhalla, New York, 10595

United States

description

Magazines, in particular magazine and feed devices for copiers

The invention relates to a magazine, in particular a magazine £ ") and feed device for copying machines.

Electrostatic copiers are known in which a photoconductive surface moves past a charging station on which a uniform electrostatic charge is applied to the surface. The charged surface moves then passes an exposure station where she exposes a light image of an original to be copied an electrostatic charge image of the original is created, which is then developed with the aid of a toner and is transferred to a sheet-like material, in particular to normal paper, at a transfer station, which is then removed with the developed image from the surface of the ^ photoconductor and with the help of take-off rollers a Collecting basket is fed. In such copiers, it is desirable that the user be able to copy the Make copies of shorter originals on shorter sheets of paper and copies of longer originals on longer sheets of paper. A copier in which this facility is provided is described, for example, in US Pat. No. 3,977,666.

The disadvantage of the known copier is that two cassettes Limited capacity are provided, making up the individual sheets of different lengths into a pair of Synchronizing rollers are pulled off. In an embodiment of the copier used in practice according to the above

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U.S. Patent, each cartridge has a capacity of about 250 sheets.

An opening is provided through the bottom of each cassette

a
which 'spring-pretensioned element acts on the front part of a support plate which carries the stack of paper, the support plate being tilted so that the front edge of the top sheet is brought into engagement with the feed roller of the copier. The main disadvantage of the cassettes of the copier according to US Pat. No. 3,977,666 is that they have only a limited capacity or a limited capacity. The capacity of one or both cassettes of the known copier cannot be easily increased by increasing the size of the cassette. It is namely a problem to exert such a force on the stack of sheets that the respective top sheet is pressed with a substantially constant pressure against a pair of feed rollers, or to bring about such a movement of the stack that the respective top sheet is raised is at a constant level with respect to the feed rollers which exert a constant pressure. In the known copier, in which only about 250 sheets are provided per stack, the stack being raised by a total height that is only a fraction of the sheet length, a linear spring can be provided in order to bias the stack of paper towards the top, the pressure effective between the respective top sheet and the feed rollers remaining more or less constant while the paper is being used. This is due to the fact that only one end of the stack is lifted, so that the length of the sheets is of no great importance if a maximum of 250 sheets is provided per stack. In this case, namely, the leading edge of the respective top sheet is not shifted appreciably with respect to the feed roller while the stack is gradually being broken down.

In the case of a magazine with a large capacity, e.g. to accommodate a stack of 1,000 sheets, for reasons of geometry,

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It is obvious that it is not possible to provide a lifting or tracking device in which only the front part of the stack is moved up against the feed rollers, due to the fact that the paper at the time at which the last sheet of the stack is pulled off, assumes such a steep incline that that of the feed rollers detected area relative to the area detected in the first sheet in the longitudinal direction of the sheet by about 3.8 cm with respect to the feed roller is shifted.

If, instead of a lifting device in which only the front end of the stack is lifted, a lifting device is provided would like to lift the whole stack, then it should be noted that the lifting device in this case for sheets, which have approximately the format DIN A4, is loaded with a weight of approx. 4.5 kg, while the longer office sheets (Legal-Size) a weight of about 6 kg must be lifted. The difference in weight that occurs depending on the paper format of about 1.5 kg makes it impossible to stack independently of the paper size with the help of a spring mechanism like that to raise that at the same time a constant spring pressure is maintained regardless of the height of the stack. on the other hand it has been shown that between the feed rollers or the feed roller and the top sheet of the stack there is a pressure of 300 g i 50 g must be maintained if the paper trigger is to function properly.

In view of the above problems, it has been proposed to provide an electric servo mechanism, to lift the stacks of copy paper sheets so that the top sheet is always at a constant height. In particular it has been proposed to provide a / microswitch for detecting the level of the top sheet and with the aid of this

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Microswitch to switch on a motor for a lifting device, as soon as the position of the top sheet sinks below a predetermined height. The feed rollers should be designed in this way and are arranged to exert a predetermined pressure on the top sheet in each case.

While in an arrangement of the type described above on the one hand satisfactory operation can be expected, on the other hand it has a number of disadvantages. First of all an electrical connection is required between the lifting device and the copier with which it cooperates. Furthermore, the lifting device is relatively expensive to manufacture and operate and, moreover, not readily for suitable for retrofitting existing copiers.

If a copier has the option, shorter Copying originals on shorter copy paper and longer originals on longer copy paper, then it turns out that one of the two possible paper lengths for each user is needed much more often than the other. For example, in the office of normal business operations requires significantly more copies with the usual A4 format than copies with excess length. On the other hand, in law firms by lawyers and patent attorneys, especially in the USA, mostly longer originals in the so-called legal size format copied. Thus, it is desirable that a large capacity magazine be suitable for the copier with copier paper to supply both formats.

Based on the prior art and the problems explained above, the invention is based on the object of a Large capacity magazine, particularly a combination of a large capacity magazine and an automatic one

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Specify feed device, which or which is relatively simple, works reliably and preferably Can be retrofitted in existing copiers instead of one of the cassettes provided there for the paper supply is.

This object is achieved by the magazine or by the magazine and feed devices according to the patent claims.

It is a particular advantage of a large capacity magazine according to the invention to be incorporated in known copiers of the type described in US Pat. No. 3,977,666 that it can also be provided for in new copiers from the outset.

Another advantage of the magazines or the magazine and feeding devices According to the invention, there is no need for an electrical connection to the copier itself. In addition, the cassette or the magazine with a large capacity can be loaded with a supply of paper relatively easily without risk of injury to the operating personnel, as would be the case if the lifting devices no suitable braking and / or damping devices were provided for the paper stack.

A particular advantage of the invention is also that it can be exchanged for a cassette of a known copier Magazine and feed device can be completely controlled and driven by a shaft of the paper feed of the associated copier is. So there is no external energy source required to get the correct height of the top sheet of the Copy paper stacks in the magazine to be maintained.

It is also advantageous that, according to the invention, the height of the upper

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most sheet of the stack as a function of movements of the feed roller the magazine and feed device according to the invention can be regulated. In addition, the magazine according to the invention works - and feeding device very reliable despite its simple and cheap construction. .

Further details and advantages of the invention are provided below explained in more detail with reference to drawings. Show it:

1 shows a schematic representation of a copier which is suitable for equipping with a device according to Invention is suitable; .

2 shows a schematic representation of the transport devices for the copy paper or copies in a copier equipped with a device according to the invention according to Fig. 1;

Fig. 3 is a plan view of a preferred embodiment a magazine and feed device according to the invention, with some parts broken away, some omitted and some are shown in section;

4 shows a side view of the device according to FIG some parts are broken away and some parts have been omitted for the sake of clarity;

5 shows a vertical partial cross-section through a magazine and feed device according to the invention to explain the attachment of the same to a copier ,

Fig. 6 is a partial cross-section of a for the installation of an inventive Magazine and feeding device suitable copier especially with the facilities that

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enable a change of the paper format;

7 shows a partial cross section through a copier for clarification cassette positioning details;

8 is an exploded perspective view to explain the drive connection between a copier and a magazine and feed device according to the invention;

9 shows a side view of a modified embodiment a magazine and feed device according to the invention, with some parts broken away and others for elevation are omitted for clarity;

10 shows a plan view of the device according to FIG. 9, with the support plate for the copy paper stack removed.

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In detail pointer. 1 and 2 of the drawing show a copier 10 with a housing 12, on the top of which a transparent imaging plate 14 is provided, which normally is covered by a cover 15 which is connected to the housing 12 by means of a hinge (not shown). In such a copier 10, an arrangement according to the invention can be provided from magazine and feeder. Furthermore, the cover 15 can be lifted off the imaging plate 14 to place an original face down on it. In the housing 12 is a drum 16, whose Surface is coated with a suitable photoconductor, rotatable held. In the schematic representation according to FIG. 1, the gear wheels of the drive devices are shown in dashed lines drawn, while the sprockets are shown in solid lines. In detail, a gear 18 is provided, which rotates together with the drum 16 and can be driven in this way is that the drum rotates in the direction of arrow A. The copier 10 has a motor 20 on its output shaft a sprocket 22 is seated, which drives a chain 24 which in turn drives a sprocket 26. The chain 24 runs in the direction indicated by an arrow, so that a gear 28, which sits on the same shaft as the sprocket 26, the so that meshing gear 18 drives so that the drum

16 rotates in the direction of arrow A.

When the drum 16 rotates, its surface moves first past a corona discharge device 30 deposited on the surface of the photoconductor on the drum surface uniform electrostatic charge generated. Afterward the drum surface then passes an exposure station, which is indicated by an arrow 32 and on the circumferential Tromiaeloberflache an Ilell-Dunkel image of the original

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is projected with an electrostatic image.
Since these details of the optical system are known per se and are not part of the invention, they are shown in the drawing
not shown in detail.

After leaving the exposure station 32, the moves
Photoconductor with the latent electrostatic image through a
Developer unit 34 where the electrostatic latent image
is exposed to a liquid developer in which toner particles are present which remain on the surface areas of the drum that have retained their charge after exposure to the ordinal to be copied. If the developed image then moves further in the direction of arrow A, then a sheet of normal paper is fed to the drum 16 at a path indicated by the reference numeral 36, which sheet then moves past a transfer corona discharge station 2 along with the drum in which the developed image is transferred from the photoconductive surface of the drum to the paper in contact with it. After the image has been transferred, the paper sheet is withdrawn from the drum 16 at a removal station 40.

A gear 42 which meshes with the drum gear 18 serves
as a drive for the take-off and drive-out system for the copies.
The gear wheel 42 sits on a common shaft with a chain wheel 44, so that the gear wheel 42 and the chain wheel 44
Rotate together around an axis of rotation b. The sprocket 44 drives
a chain 46 in the direction of the arrow drawn in on the chain in FIG. The chain 46 drives a sprocket 48 which is seated on a common shaft with a gear 50, which in turn meshes with a gear 52, which is a cleaning roller
drives counterclockwise about an axis of rotation a.

The chain 46 also runs over a chain tensioning wheel 54 and a

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Chain wheel 56, which rotates about an axis of rotation c, which forms the axis of rotation of the lower roller of a pair of take-off rollers. Finally, the chain 46 drives a sprocket 60, which is assigned to a lower take-off roller, to rotate about an axis of rotation e. The path of the chain closes, then via an idle sprocket 62, which is followed by the sprocket 48. _f .

The drive system for the copy paper feed has a gear 64, which can be driven by the drum gear 18. A sprocket 66 which is on a common shaft with the Gear wheel 64 is seated, rotates about an axis of rotation f and drives a chain 68 in the direction of that shown on this chain in FIG. 1 Arrow. The chain 68 drives sprockets 70 and 72, which are assigned to an upper or "lower feed roller," to rotate about axes of rotation g and h. The chain 68 is tensioned by a chain tensioning wheel 74. All gears, sprockets and Chains, which have been described above, are located in the rear - in FIG. 1 right - part of the copier 10.

From FIG. 2 it is clear that the designated by the reference numeral 76 Cleaning roller is drivable to a rotary movement about the axis of rotation a, through the gear 52. .The surface of the Cleaning roller 76 rests against the drum surface and runs at the point of contact in the opposite direction as the drum surface. ... .

A take-off roller 78 cooperates with a roller 80 to bring a withdrawn sheet to the nip between two intermediate transport rollers 82 and 84, the transport roller 84

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rotates around the axis of rotation c. After leaving the intermediate trans With port rollers 82 and 84, the sheet passes under a hold-down roller 86, which rotates and becomes around the axis of rotation d thereby brought into the range of action of a drying device 88. When the sheet leaves the dryer 88, it enters the nip between take-off rollers 90 and 92 from which the lower (92) is driven to rotate about the axis of rotation e. The take-off rollers 90 and 92 guide the dried Sheet or copy to a basket 106 for the copies.

The copier in question is equipped according to the invention with an i-lagazin and feed device, which is a first Has a cassette with a relatively small paper supply 98, which is designed similarly to the cassette according to the introduction mentioned US-PS 3,977,666 and from which the sheets with the less frequently used length of paper are withdrawn. The smaller one The cassette with the paper supply 98 is assigned a feed roller 100 which can be driven to rotate about the axis of rotation g is. A second feed roller 102, which can be driven to rotate about the axis of rotation h, is the one according to the invention Associated magazine and feeding device with a large supply of paper. It can be seen that the feed rolls 100 and 102 be driven in all operating modes of the machine. However, as will be explained below, of the two In a particular operating mode of the copier, feed rollers 100 and 102 each have only one associated with them Effective.

The magazine and feed device 110 according to the invention with. large capacity is shown in Figures 3 and 4 and has a side wall 112 with a base 114 and an opposite one Side wall 116 with a base part 118 which is suitable to attach to the base part 114 along the longitudinal center line

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* to support the device. One running along this center line Connection plate 120 for the base parts is on each of the base parts 114, 118 by means of screws, rivets or the like - reference number 122 - attached. A round plate 124 which is located to the right of the connecting plate 120 in FIG. 3, is connected to the two base parts 114, 118 by means of screws 126

^: or the like connected. '

On the base parts 114, 118 are at selected points with the help of suitable fastening devices 130, such as. B. screws or rivets, four washers 128 attached, which serve to support the lower ends of four coil springs 132, 134, 136 and 138, which are provided for lifting the paper stack in the magazine. ^{': ·}

Furthermore, a shaft 140 is provided for two left guide arms, which passes through a vertical part of a bracket 142 which is attached to the base part 114. The ends of the shaft 140 are mounted in the side walls 112 and 116 by means of suitable bearings. The left guide arms 144 and 146 are connected to sockets 148 which are non-rotatably connected to the shaft 140 and can rotate together with this. ■

Another shaft 150, which is also a bearing in the bracket 142 is in suitable bearings in the side walls 112 and 116 mounted and rotatably connected to sockets 148 on which two right guide arms 152, 154 are attached, which carry pins 156 at their free ends, on which rotatable guide rollers 155 seated. As FIG. 4 shows, the free ends of the left guide arms 144 and 146 are connected to one another via a pin 157, on which two guide rollers 155 are rotatably supported. A main paper support plate 158 of the apparatus is two Coupling brackets or channels 16o for the rollers 155 on the left

_ ₂₄ _

Provide guide arms. One of the cannulas 160 is in rig. 4 shown. In a corresponding circle at the right end of the support plate 158 coupling brackets 162, 164 are provided which the receptacle the rollers 155 of the right guide arms 152, 154 are used. A hi Paper backing plate 166 is attached to backing plate 158 by means of rivets 168 or the like (Fig. 3). You can see ape leadership arms with their rollers, meshing gears 204 and 2o6 and the above-described support arrangement for the paper; form a lever parallelogram, with the help of which it is forced that the support plate 158 is parallel to its main surfaces moved up and down. This prevents the stack of paper in the magazine according to the invention from tilting whereby when the paper is pulled from the stack of paper, the sheets of paper could jam or tilt

On the side walls 112 and 116 and the base parts 11 < and 118 existing arrangement is by means of suitable fastening a front guide plate 170 for the paper. see. A support plate positioning spring 161 is between the common axle 157 for the guide rollers of the left guide yarn and a strut 173 arranged on the underside of the support plate 158 is attached. The spring 161 prevents play of the support plate 158 forwards or backwards and sets the support plate 15 on the front guide plate 170 of the magazine assembly or on suitable vertical guides (not shown). At the On the underside of the support plate 158 there are several positioning disks 1 for the helical springs 132-138 serving as lifting springs, namely at points which correspond to the position of the disks 128 on the base parts 114 and 118. The discs 128 are used Support for the upper ends of the lift springs 132-138.

In Figures 9 and 10 of the drawings, one embodiment is one Magazine arrangement according to the invention shown in which instead

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the coil springs spring clips are provided, which are designed similar to a mousetrap. In this embodiment, only two guide arms 145 and 151 are provided which carry the four guide rollers 147, 153, 163 and 165. In the exemplary embodiment under consideration, the shaft 140 extends through a torsion coil spring 169, which has two sections connected to one another, which are connected to one another by a U-shaped bend 171, as is clear from FIG. 10. The arch 171 is supported on the underside of the guide arm 145 and generates an upwardly directed prestress at its free end. The guide arm 145 carries an axle 149 at its front end, so that a T-shaped shape of the guide arm results. The two guide rollers 147 and 153 are rotatably mounted on the axle 149. At the two outer ends of the spring 169, an extension 175 or 173 with a leg 177 or 179 is provided, which is supported on the bottom of the housing. Furthermore, the shaft 140 extends through holding brackets 181 and 183 (FIG. 10). In the exemplary embodiment, the shaft 150 is also held by the brackets 181 and 183 and wrapped around by a torsion coil spring 169 corresponding to the torsion coil spring 129. This spring 169 also has a U-shaped bend 131 in its center and extensions 1'35 and 133 at its ends, which are provided with legs 137 and 139, respectively. These legs are again supported on the bottom of the housing. The U-shaped arch 131 is supported on the underside of the guide arm 151 and resiliently biases its free end upward. In the unloaded state, the arch 171 of the front spring 169 and its extensions 173, 175 form an angle of approximately 50 with one another. In the case of the rear spring 129, the arch 131 and the extensions 133 and 135 enclose an angle of approximately 45 in the unloaded state. This difference arises due to the fact that in the exemplary embodiment according to FIGS. 9 and 10 the tooth

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wheels 204 and 206 mesh with each other such that they tilt the support plate 158 such that its front edge is approximately 1.3 cm ^higher: is as its trailing edge. For this reason, it is necessary that the front torsion spring has a greater stroke than the rear torsion spring. The inclined position of the support plate 158 from the front to the rear is clear from FIG. This inclination, ie the lifting of the front end of the support plate in relation to the rear end, serves to prevent two sheets of paper from being pulled off the paper supply at the same time. Under the influence of gravity, the sheets of the paper stack tend to be supported on the struts 1.92 and 194 (FIG. 3). The guide arms 145 and 151, the brackets or channels 161 and 162 and the intermeshing gears 204 and 206 force that the support plate 158 does not move exactly parallel to its main planes during its upward movement and its downward movement, as is the case with the embodiment according to FIG. Fig. 3 and 4 is the case. The deviation from the parallel displacement results from the fact that the angle that the guide arm 145 forms with the vertical is somewhat smaller than the angle between the vertical and the guide arm 151. Nevertheless, the movement of the support plate runs almost parallel to its main surfaces. The deviation from the pure parallel displacement is a function of the sine of the angle between the guide arms 145 and 151.

The magazine and feed device according to the invention is provided with an adjusting element 172 for adjusting the paper length, wherein the adjusting element has a portion which i: the longitudinal direction of the magazine, ins 110 and which with a elongated slot 174 is provided. In the slot 174 engage two guide pins 176 and .178, which on the base part 118 at a distance are fastened from each other.Safety washers 180 on the Guide pins 176, 178 hold the adjustment element 172 in its:

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However, position / allow a displacement of the same in the longitudinal direction the arrangement. The adjustment element 172 is marked with a rake 1S2 provided, the one on top of the other in the longitudinal direction of the adjusting element and correspond to the different paper sizes. A pointer 184 on peg 176 can be aligned with the marks to indicate the length of paper that the device is set. If it is desired / desired, the marks can be designed as recesses, so that the adjustment element by means of a locking device “(not shown) exactly in the desired location can be set. A bracket 186 is attached to the adjustment element 172 and has a slot 189 in the Side wall 116 extends through and on which a handle 188 is provided, with the aid of which an adjustment of the setting element 172 can be done.

An arm 190 protrudes from the setting element 172 in the transverse direction, from the two struts at a distance from one another in the vertical direction. 192 and protrude 194, which support the right edge and the rear edge of the paper stack in the device. Farther the main support plate 158 is supplemented by the auxiliary support plate 166, in which slots 196 and 198 are provided at a distance from one another are in which the struts 192 and 194 can move to the left when an adjustment is made to a blade length, which is shorter than the sheet length of the longest sheets of polygamy that can be accommodated in the magazine.

On the side walls 112 and 116 are each a pair of vertical guides arranged at a distance from one another are provided for the paper supply.

From the above description it is clear that the lifting springs 134-140 normally push backing plate 158 upward. When the support plate 158 moves upward, pivot

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ken the shafts 140 and 150 of the contact arms - in Fig. 4 - in Clockwise or counterclockwise. The gears 204 and 206 on the shafts 140 and 150 couple the guide arms in this way that they are pivoted in the opposite direction of rotation. If the guide arms are now inclined at the same angle with respect to the vertical, then the support plate moves 158 parallel to their main surfaces up or down

With the shaft 140, the hub 210 of a crank arm 212 is by means a pin 208 rotatably connected. At the end of the crank arm 212 facing away from the hub 210, a toothed segment 214 is provided, which meshes with a pinion 216, the non-rotatable a shaft 218 sits.

The shaft 218 also carries a flywheel assembly 220 having a hub 222, an outer plate 224, essentially one annular weight 226 and an inner plate 228. The elements the flywheel assembly 220 can be assembled in any suitable manner. Between the pinion 216 and The flywheel assembly 220 is provided with a one-way clutch 230 with a helical spring. Such overrunning clutches with Coil springs are known. When the support plate 158 moves under the action of the lifting springs 134-140 in such a way that the The pinion 216 - in FIG. 4 - is driven in the counterclockwise direction, then the clutch 230 also couples the flywheel arrangement 220 the pinion 216. Specifically, one end of the coil spring is dei One-way clutch 230 to hub 222 of flywheel assembly 2i connected, while the coupling is designed so that its helical spring, in particular a band spring, counterclockwise around the hub of the pinion 216. So if the pinion is driven in the same direction of rotation in which the calibrated Clutch spring closes, then a clutch of the pinion with the flywheel assembly 220 is effected. When the pinion 216 is

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is driven counterclockwise, which happens
when the support plate 258 is pressed down by the application of a load, the direction of rotation of the pinion is opposite to the closing direction, the clutch spring, so that the
The clutch spring releases and allows the gear assembly to come to a standstill so that the support plate 158 can be easily pushed down without having to overcome the inertia of the flywheel assembly.

From the above description it is clear that a risk of injury to the operating personnel is avoided because
an accelerated raising of the support plate 158 under the
Effect of the Kubfedern is prevented, through the damping effect of the flywheel assembly 220.

The hub 234 of a large gear 232 is rotatably coupled to the shaft 218. The gearwheel 232 meshes with a brake gearwheel 236, which via a freewheeling band spring brake 238
a pin 240 is coupled to the side wall 116. In detail, the hub of the gear 236 sits and wraps around it increasingly tightly when the hub - in Fig. 4 - rotates clockwise. If the gearwheel 232 tries to rotate the brake gearwheel 236 in a clockwise direction, then the band spring wraps around
the hub of the brake gear 236 and locks it on the pin 140. The support plate 158 is therefore normally prevented by the brake device 238 from moving upwards.

The braking device 238 can be prevented from becoming effective if the free end of the ribbon spring is displaced in such a way that
this has a tendency to separate from the hub of the brake gear 236. For this reason, an arm 242 is provided which sits freely on the pin 240 and carries a pin 244, one of which

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The end protrudes outwards in such a way that it is the free end of the ribbon spring of the braking device 238 can detect. The other enlarged end of the pin 244 projects outward through an opening in the side wall 116 and can from there in even closer to be described operated such that the braking device 238 is released.

It is clear from the above description that suitable known ones for the overrunning clutch 230 and the overrunning brake 238 Clutch or brake assemblies can be used. Preferably band spring clutches or brakes are used, as they are in the work "Pictorial Hand Book of Technical devices", Schwarz and Grafstein Chemical Publishing Comp., New York, USA, 1970, pp. 10 and 11. With such arrangements is known to be attached to one end of a helically wound ribbon spring on a driven element, while a part the ribbon spring wraps around a driving element. The coupling or Braking effect arises when the driven element rotates with a sense of rotation in which the ribbon spring loops more closely around it, if it is not attached to it by suitable measures is prevented. The ribbon spring of the clutch 230, one end of which is connected to the flywheel assembly 220, has accordingly the tendency to lie tightly around the hub of the gear 216 when this - in Fig. 4 - is driven in the counterclockwise direction. Since the wrap-around effect of the band spring is not prevented by anything, the flywheel assembly 220 is consequently connected to the support plate 158 coupled when this moves up and that Gear drives counterclockwise. On the other hand, when the support plate is pressed down so that the gear 216 rotates clockwise, then the band spring of the clutch 230 is released and slides on the gear hub without a clutch effect resulting.

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The band spring of the braking device 238, one end of which is fastened to the pin 242 fixed to the frame, tends to have the hub of the driving gear 236 clockwise - in Fig. 4 - to embrace. As long as the pin 244 is not in such a position that it prevents further winding of the ribbon spring, becomes with an upward movement of the support plate 158 and a corresponding rotary movement of the gear 236 in the clockwise direction causes a clutch between gear 236 and the frame so that support plate 158 does not move upward can continue until the brake is released with the help of the pin 144 will. The brake is released when the top sheet of paper is available is at a given level. If the Support plate 158 is pressed down and consequently the gear 236 is rotated counterclockwise, then the Band spring of the braking device 238 and slides over the hub of the gear 23 6, so that no braking effect occurs.

The magazine and feed device according to the invention has a lower paper output guide 246, at the edges thereof, corresponding Brackets 248, 250 are provided, which protrude from the top of the guide 246 upwards. Furthermore are an upper guide and pivot arms 254 and 256, respectively, each of which has a laterally protruding tongue 258. The edges of the top Guide 252 and tabs 258 of pivot arms 254 and 256 are in a suitable manner, for example by means of screws 260 or the like, such-mf ^ brackets 248, 250 connected that a Arrangement results, with the help of which the paper sheets withdrawn from the magazine in a manner to be described inwards and inwards be moved substantially upward with respect to the copier 10. The upper ends of the pivot arms 254 and 256 are through Pivot pins 262 and 264, respectively, on the side walls 116 and 112 such supported that the paper guide assembly is pivotally supported by the side walls. The middle part of the top guide

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252 is provided with a substantially horizontal kink 26C. In the area of the bend 266, a bracket 268 with vertically upwardly projecting parts 270 and 272 is suitable, for example by means of screws or the like, attached. The vertical parts 270 and 272 are used for rotatable mounting a shaft 274 for paper transport.

Another bracket 276 with elongated holes 278 is adjustably fastened to the upper guide 252 by means of screws 280. The coat hanger 276 is used for the rotatable mounting of a shaft 282 with a bushing 284. A gear 286 is non-rotatably seated on the shaft 282, the n can mesh with a split gear, which is described in more detail below and sits on the shaft 101 on which the Sitting food orphans 102 of the copier 1C rotatably. The wave 2S2 also non-rotatably carries a pulley 288 which drives a belt 290 which runs over a pulley 292 which sits on a pin 294 which is supported by the vertical part 272 of the bracket 268. The vertical part 272 of the bracket 268 also carries a pin that carries a pulley. A gear 298, which is shared with the belt pulley or pulley 29 6 rotates, meshes with a gear 300, which is seated in a rotationally fixed manner on the shaft 274. The shaft 274 carries furthermore a pulley 302 and a spacer element 304, which cooperates with a paper guide arm 316, which on this shaft sits, wherein the spacer element 304 serves to the gear 300 and the pulley 302 in the longitudinal direction of the Position shaft 274. A pivot arm 306 carries a bearing housing 308 in which a bearing 310 for the rotatable mounting of a Shaft 312 is provided. A second contact arm or swivel arm 314 is pivotable at a distance from the swivel arm 306 of the shaft 274 and is used together with the pivot arm 306 to support the shaft 312. The ends of the shaft 312, which laterally over the guide arms 314 and 316 in the direction of the Side walls 116 and 112 protrude carry drive rollers 320

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or 318, which rotate together with them. A belt 3 24 driven by the pulley 302 drives a pulley 3 22 which is seated on the shaft 312. The arm 306 also carries an idle pulley 326. A cross bar 328, which can serve as a handle, extends through the arm 306 and moves up and down with it. A stop pin 330 in the side wall 112 limits the downward movement of the crossbar 328. The other end of the crossbar 328 can - as is clear from FIG. 3 - strike the inner end of the pin 244 if the crossbar 328 is moved downward enough to whereby the end spring of the braking device 238 is released. The support plate 158 moves up in this case and raises the feed rollers 318 and 320. As a result, the cross rod 328 is raised and brought out of engagement with the inner end of the pin 244, so that the braking device of the gear 236 can block again, whereby the toothed segment 112 locks the shaft 140 against rotational movement. In the manner described above, a mechanical servo mechanism is provided according to the present invention. The feed rollers even detect the position of the top sheets in the paper supply stacks. When one or more sheets are peeled off, then the feed rollers decrease sufficiently far from, so that the cross bar 328 detects the pin 244 is released whereby the braking device. As soon as the feed rollers move upwards and the crossbar 328 lifts off the pin 244, the upward movement of the paper stack is stopped again.

The magazine and feed device according to the invention v / eist a positioning bracket 334, the two side arms 336 and 338 and has two tongues 340 and 342 arranged at a distance from one another on its left edge in FIGS. 3 and 4. There are also two Brackets 344 and 346 are provided for the magazine. The side arms 16 and 338 of the positioning bracket 334 and the brackets 344 and 346 are

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on the side walls 116 and 112 by means of suitable fastening facilities 348, VzIe z. D. Screws, rivets or the like attached.

While an essential object of the invention is for existing copiers provide a large capacity cassette, it should be understood that the inventive cassette or the magazine according to the invention can also be used as a removable permanent magazine for each copier. In order to adapt the large-capacity magazine according to the invention to an existing copier, the must for the paper transport required power can be obtained from the copier to which the magazine is connected.

• ν ·

As is clear from FIG. 8, the drive energy is transmitted from the shaft 101 driven by the motor 20 the magazine and feed device according to the invention provided a split gear with two halves 350 and 352, the assembled on the shaft 101 and held together by a collar 354 over the hub portions of the gear halves 350 and 352 can be pushed to earth. The collar 354 is then secured in place on the gear halves by means of a screw 356 secured. Furthermore, a positioning element 360 is provided, which interacts with a snap ring 358 on the copier, around the split gear 350, 352 along the shaft 101 at a predetermined distance from the feed roller 102 keep. It should be noted that the teeth of split gear 350, 352 and the teeth of gear 286 are each triangular Profile on v / iron so that said gears mesh precisely when they are brought into mesh with one another will.

5 shows, in a copier according to the above

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US Pat. No. 3,377,666 provides an upper cassette 362 with a bottom opening 364, in which cassette 362 there is a support plate 366 for a paper supply. On the underside of the cassette 362 there are two projections 368 which fall behind two resilient rollers 370 when the cassette is pushed into an associated opening adjoining the feed roller 100 . . . . .-. ■■ ··

An upper shaft 372, which enables paper transport, carries two arms 374 which support rollers 376 rotatably. A lower one Shaft 378 for activating the paper transport carries arms 380 which support rollers 382. An arrangement is provided with their help selectively one of the two shafts 372 and 378

the

can be pivoted into a working position, while others are in each case Shaft is moved to a rest position. When the shaft 372 is moved to its operative position, the associated ones are grounded Rollers 376 are moved upwards, while in the other case the shaft 378 with its rollers 382 is moved upwards. If with the upper cassette 362 is worked, then brings a pivot of the arms 374 the rollers 376 resiliently engage the underside of the support plate 366, causing the stack 98 of sheets of paper is brought into engagement with the feed roller 100. if on the other hand the shaft 378 is moved into its working position, the associated rollers 382 grip the underside of the lower one Paper guide 246, which pivots gear 286 into engagement with split gear 350,352.

6 shows that the device for selectively pivoting the rollers 376 or 382 into their working position has a toggle lever 384 which is carried by a pivot pin 386 on the machine frame. On the outside of the copier 10 is a Handle 388 accessible, with the help of which the toggle lever 384 is placed in its two positions to be described below can. An ileal positioning arm 390 which is pivotable from a "

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Pivot pin 39 2 of the frame is supported and carries a cam 394, which cooperates with a cam scanner 396 on one arm of the toggle lever 384. A spring 398, which between the Pivot pin 386 and the end of the arm 390 facing away from the pivot pin 39 2 is tensioned, presses the upper edge of the arm 3i against the cam scanner 39 6.

In the position of the arrangement shown in solid lines in FIG. 6, the spring 398 holds the toggle lever 384 in its lower position Location. If now the handle 388 is operated to pivot the toggle lever 384 into its upper position, shown in dashed lines Lines is drawn in, then the IJockenabtaster 396 overflows the cams 394. In this position of the device, the toggle lever 384 is then releasably held in its upper position.

Another toggle lever 400 is seated non-rotatably on the lower shaft 378. A spring 402, which is located between one arm of the toggle lever and disposed on the frame of the copier 10, presses the further toggle lever 400 normally in the position shown in solid lines, in which a pin 404 on the other Arm of the further toggle lever 400 rests on an arm of the toggle lever 384. If it does, then the bottom shaft is 378 in their working position, while the spring 402 assumes a position in which the rollers 382 are resiliently attached to the lower paper guide 346 are present. At the same time, the lower edge of the toggle lever 384 presses on a pin 410 on an arm 406, which is non-rotatable seated on the upper shaft 372, whereby the arm 406 against the action of a spring 408 between the pin 410 and the frame is pivoted into a position in which the upper rollers 376 take their rest position. If the feed rollers 100 and 102 now rotate under the circumstances described, then only the lower shaft is effective, so that a sheet is withdrawn from the magazine 110.

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Λ 43 300-b. ; ; .; "·::

If you now look again at FIG. 5 of the drawing, you will see man that at the bottom of the frame of the copier there is a reinforcement channel 412 is provided. When installing the magazine in the copier 10, the handle 388 is in its upper position moved so that the rollers 3 82 assume their rest position. Then the arms 336 and 338 of the bracket 334 are in the lower cassette opening of the copier 10 inserted / wherein the brackets 344 and 346 occupy such a position,

that their free ends are located under the reinforcement channel 412 are located. At the same time, the tongues 340 and 342 run over a spring-loaded roller 370 (FIG. 7) around the magazine in the copier 10 to position correctly.

3 and 4, it becomes clear that the arms 254 and 256, which sit on the pins 262 and on the frame of the copier 10, support guides 246 and 252 pivotably on the frame. The guide 252 support legs bracket 268 which carries a shaft 374 which pivotally supports the bracket which in turn supports the bearings 310 of the shaft 312. The shaft 312 supports a rod 328. A cover with three downwardly directed pins 416, 418 and 420 is also provided. The pin 416 is located in the center, while the pin 418 is located adjacent to the side wall 116 and the pin 420 is located adjacent to the side wall 112. The rod is passed between the pins 318 and 320 with enough play to be able to move up and down. When the cover 414 is pivoted to its ^{position indicated by dashed lines 320 1} in FIG. 4, the rod 328 and rollers 318 and 320 carried by the shaft 312, along with the cover 314, are also rotated about the axis of the shaft 274 pivoted. When the cover 414 is opened, the braking device 238 is also activated.

As is clear from the description above, the

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Roles 382 in the working position of the magazine and food supply on the underside of the bracket 346. ]

In this case, the arrangement of the guides 352 and 346 is pivoted in such a position that the rollers 318 and 320 are the uppermost Sheet of the stack in the magazine. The rollers 3 and 320 are on the top sheet with a pressure ve about 32Og. The spring 422 limits the downward movement of the rollers 318 and 320 when the cover 414 is opened Apparatus is further provided with a rear cover which is pivotable about a shaft 425. Furthermore si lateral covers 428 are provided, as well as a cover 426 for the servomechanism, this cover by means of suitable ter fastening devices on the side wall. 116 attached is.

.If the device according to the invention in conjunction with a Copier according to US Pat. No. 3,977,666 is used, the gear halves 350 and 352 and the collar 354 in assembled on the shaft 101 in the manner described above. Then the magazine and food according to the invention Device installed instead of the lower of the two cassettes of the known copier according to the aforementioned US-PS. This happens, by first bringing the handle 388 into the position shown in dashed lines in FIG Brings cassette 110 into its operative position and by closing it borrowed the handle 388 back into its position drawn in solid line in FIG. 6. If this works au are guided, the split gear 350, 352 is brought into engagement with the gear 386.

From the above description it is clear that the inventive Use magazine and feed device of large capacity independently of a copier according to the US-PS mentioned.

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can be det. In the case of a copier of another type, you can the rollers 318 and 320, for example, as components of the feed device are provided, while the remaining parts of the magazine and feed device are detachable with the copier in question get connected. With such an arrangement, when the magazine is built into the copier, the feed rollers are grounded 318 and 320 are automatically engaged with the top sheet in the magazine. In addition, the inventive Magazine and feed device can be provided as original equipment for a copier.

After attaching a magazine and feed device according to the invention to an already existing copier in the manner described above, the magazine is loaded with sheets of copy paper by turning the cover 414, the rollers 318 and 320, the actuating rod 328 with feedback effect and the idling tension roller 326 the axis of rotation of the shaft 274 is pivoted ^{into the position 320 1} shown in dot-dash lines in FIG. 4. Once this has been done, the magazine can be filled by placing the desired number of sheets of copy paper on the auxiliary support plate 166 which is carried by the main support plate 158, up to the full fit of the magazine. The copy paper sheets and the support plates can then be pressed down to an intermediate division or to their lowest position. In this case, the activated braking device 238 ensures that the arrangement of relatively strong lifting springs is not lifted upwards. Although the capacity or the capacity of the magazine is limited by the design of the frame of the respective copier, a magazine with a capacity of 1,000 sheets has been successfully used in connection with a copier according to US Pat.

* - 40 -

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If desired, the support plates can be moved to any position regardless of the presence or absence of copy paper, the support plates then being held in that position by the braking device 238 since the braking device acts as a brake for one direction of movement while it is moving allowed in the other direction. An operator working on the magazine is therefore not endangered by the fact that the support plates could snap back. In addition, the support plates would not be moved upwards at a dangerous speed even with the braking device 238 released, since their upward movement is insulated by the pivoting gear arrangement 220. A quick snapping up of the support plates is thus reliably prevented in any case. After the magazine has been filled, the rear cover 424 is closed, while the front cover 414 is pivoted back into its closed position shown in FIG. The rod 238 reaches its lower limit position and releases the braking device 238. In addition, the stack of copy paper moves upwards until the rollers 318 and 320 return to their working position and rest on the top sheet of the stack. The rolls are held in contact with the top sheet by the weight on them. When a copy is in progress, the top sheet is advanced enough to insert its leading edge into the nip between the synchronizing rollers 94 and 96 of the copier. If the feed roller 102 works in conjunction with a cassette as US-PS is present in the copying apparatus acc. 3977 666, it rotates a sufficient time to the signal detected by their sheet supply also the nip between the register rollers 94 and 96 . Since, in the arrangement according to the invention, the rollers 318 and 320 are at a greater distance from the synchronizing rollers 94 and 96 than the feed roller 102, said rollers must be driven for a longer time. For this reason, the device according to the invention is designed so that, depending on the

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usual rotational movement of the feed roller 102 a sufficient rotational movement of rollers 318 and 320 is caused to be safe make sure that the leading edge of the pulled sheet reaches the nip between the rollers 94 and 9 6.

After the initial transport of a sheet, the copier works as usual. In detail, a rotational movement of the drum 16, which has the consequence that the rollers 94 and 96 aligned with the leading edge of the image on the drum surface, the roller drive is switched on to feed a sheet of the drum Feed copy paper. The image is then transferred onto the copier paper, whereupon the finished copy from the copier 10 is transported out.

The mechanical servomechanism of the device according to the invention ensures that the top sheet of the copy paper is always in the feed position. The servomechanism works with a certain usable amplitude so that it is not necessary to lift the stack of copy paper every time, if one or more sheets are peeled off. The food rolls are held in engagement with the top sheets of the stack under a gravity bias. When the shaft carrying the feed rollers moves downwards, the rod also moves so that the brake is released which up to this point prevents the support plate from moving up with the stack of paper. It it goes without saying that the mechanical servo system according to the invention can be made as sensitive as required by the tolerances and the spacing of its components are appropriately narrow.

From the above description it is clear that the Invention underlying object is achieved and that the

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April 12, 1979

specified advantages can be achieved. According to the invention is namely a magazine and feed device created which exchanged for the paper cassettes in known copiers can be. The device according to the invention receives its entire control and drive energy from the / drive of the feed or feed rollers of the existing copier serving shaft. In addition, there is no in the device according to the invention external energy source required to top the correct height Sheets of the paper stack upright. Instead, the height of the top sheets of the stack in the case of the invention Magazine and feed device controlled by the feed or draw-in rollers, which, if necessary, lift the stack; trigger from copy paper sheets. Furthermore, in the inventive Device the magazine can be filled without a risk to the operator. Finally, the magazine and Feed device according to the invention, despite its large capacity, is relatively simple and inexpensive to build and operate very reliable.

Finally, it should be pointed out that the invention is described in more detail above only with the aid of an exemplary embodiment has been explained and that the person skilled in the art, based on this exemplary embodiment Numerous possibilities for changes and / or additions are available without him doing the basic idea the invention would have to leave.

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first page

Claims (1)

DH.-ING. DIPU-ING. M. SC. * * OiPL .-> HY $. D «. " .. - ~ IdIpL-PHYS. DIPL- ^ HVS. DR. HÖGER - LEGAL LAW - GJ ^ IEJSSSÄCXH - IHATOKER BOEHMF PATENT LAWYERS IN STUTTGART * 7 Q 1 K *? Q K A 43,300 b Applicant: Savin Corporation k - 177 Columbus and Stevens April 17, 1979 Avenues Valhalla, New York 10595 United States Pat nt to sayings 1. Magazine and feed device for copiers, marked through the following features: A housing is provided with a copy paper outlet port; in the housing is a support for a stack of Copy paper sheets are provided to be fed to the copier; in the housing are fastening devices for the support provided which allow up and down movement of the support in the housing; there are guide devices provided, with the help of which an essentially pure parallel displacement of the support can be brought about inside the housing; there are spring devices provided with their help the support can be prestressed upwards; a movably supported inertial mass is provided, which can be connected to the support with the help of an overrunning clutch in such a way that its upward movement is below the action of the spring means is dampened while their downward movement is not influenced by the inertial mass; 909844/0838 " ² ~ A 43 300 b - "- ^: '. ·:: k - 177 ■:: ■ -: ■ "-" '- April 17, 1979 - 2 - a braking device is provided, with the aid of which the support is provided against the bias of the spring means can be fixed in an intermediate position; there are scanning devices for detecting the upper end of the stack, with the aid of which the braking device can be released when the top sheets of the stack are on the support below the outlet opening, so that the support is movable upwards under the action of the spring means; there are devices provided with the help of the braking device can be activated again after an upward movement of the support if by the scanning devices it is determined that the top sheets of the stack occupy a position adjacent to the outlet opening; 2. Magazine and feeding device, characterized by the following features: a housing with an outlet opening is provided; a support for receiving a stack of paper sheets to be ejected is provided in the housing; fastening devices are provided with the aid of which the support is held in the housing in such a way that that it is movable upwards towards the outlet opening; spring devices are provided with the aid of which the support can be biased upward; - 3 Ö098U / 0838 A 43 300 b.: · "- - ■" ■ "'""- k - 177.; * .- .: ■■ - ■. ■ April 17, 1979 - ^: - - 3 -'- there are releasable braking devices provided with their Help the support can be braked when the top sheets of the stack are in the vicinity of the outlet opening; a feed roller is provided which is movably mounted relative to the housing and in engagement with the uppermost one Sheet of the stack can be brought and which is drivable in order to transport the respective top sheet to the outlet opening; there are controls provided with their help the braking devices can be released as a function of the movement of the feed roller and there are devices provided with the help of the braking devices can be reactivated as a function of a predetermined movement of the support. 3. Magazine and feeding device for automatic feeding from copy paper to a copier with a pair of synchronizing rollers and a feed roller shaft that normally is driven to advance a sheet of copy paper from a magazine to the synchronizing rollers through the following features: it is a magazine for holding a stack of sheets of copy paper intended; it is a feed roller is provided, which so on the Magazine is mounted so that it is in engagement with the top sheet of the stack and there are coupling devices provided, with the help of which the feed roller shaft of the copier with the feed roller 9098U / 0838 Α .... 43 300 b ^: · "'.- :: April 17, 1979 '"- 4 -' of the magazine is coupled in such a way that the coupling devices drive the feed roller of the magazine long enough to feed the top sheet of the stack into the magazine to the synchronizing rollers when normal rotation of the copier's feed roller shaft occurs. 4. Magazine and feed device for a copier with a feed roller shaft, characterized by the following Characteristics: it is a magazine for holding a stack of sheets of copy paper intended; a feed roller is provided which is mounted on the magazine so that it engages the uppermost one Sheet of the stack stands; there are fastening devices for fastening the magazine to the copier and provided there are coupling devices provided which the feed roller shaft Coupling with the feed roller mounted on the magazine and a split gear and fastening devices for releasably attaching the split gear to the feed roller shaft of the copier. 5. Magazine with an outlet opening through which the individual Sheets of a stack of copy paper sheets can be discharged one after the other, characterized in that Spring devices are provided with the aid of which the stack can be moved in the direction of the outlet opening, that a flywheel arrangement is provided that coupling devices with an overrunning clutch for coupling 909844/0838 a 43 300 b - ::::::. . ^- :: k -177: ■ _4: ·· ■■ '. ■''' ■ ': ^::: April 17, 1979 ___ ■ "_ -5- 2915785 the flywheel assembly with the spring devices are provided that a large gear is provided that Drive devices are provided, with the help of which the large gear wheel as a function of movements of the stack it is drivable that a small gear meshing with the large gear is provided that braking devices are provided for braking the small gear and that actuating devices are provided with their help the braking devices can be released as a function of an upward movement of the stack. 6. Magazine and feed device for successively feeding sheets of copy paper to a copier with a feed roller shaft, characterized by the following features: it is a magazine for holding a stack of sheets of copy paper intended; it is a feed roller is provided, which so on the Magazine is mounted to engage the top sheet of the stack; they are fastening devices for fixing the magazine provided on the copier and they are coupling devices for coupling the feed roller shaft of the copier with that mounted on the magazine Feed roller provided. 7. Magazine and feed device with a feed roller for successive positioning of the sheets of a stack of copy paper sheets at an outlet-side end of the Magazine, characterized in that braking devices 909 8 4 4/0838 - 6 - A 43 300 b -: -:. . - · April 17, 1979 -6- 2915785 are provided, with the help of which normally an upward movement of the stack can be prevented if the uppermost sheets of the stack adjoin each other in a predetermined position located at the outlet end that the actuating device are
lines provided /, with the help of which the feed roller can be pressed downward with respect to the magazine and into contact with the respective top sheet of the stack / and that. . Means provided / with the help of which, in response to a downward movement of the feed roller after sheets have been pulled off the stack, the braking devices can be released to allow the stack to move upwards so that the upper end of the stack can be moved into a position from which the top sheets of the stack can be peeled off one after the other. 8. Magazine with an outlet opening through which the individual sheets of a stack of sheets can be discharged one after the other are, and with facilities that help the stack can be transported in the direction of the outlet opening, characterized in that a flywheel arrangement is provided is and that clutch devices with a one-way clutch are provided, with the help of which the flywheel assembly with the means for transporting the Stack can be coupled to limit the speed of the upward movement of the same. 9. Magazine with an outlet opening through which the sheets of a stack of sheets can be pulled off one after the other, and with means for transporting the stack in the direction of the outlet opening, characterized in that that damping devices are provided and that coupling devices are provided with an overrunning clutch are, with the help of which the damping devices with the Θ09844 / 0838 Λ 43 300 b k - 177 April 17th 1979 ♦ t- · 7 - " Means for transporting the stack to the limit the speed of movement of the stack can be coupled. 10. Magazine with means for moving a stack of sheets to the top of the magazine at which an outlet opening is provided, and with means for sequentially withdrawing the sheets from the top of the stack, characterized in that biasing means for lifting the stack of sheets towards the Upper end of the magazine are provided that braking devices are provided, with the help of which the upper end of the Stack can be fixed in a predetermined position adjacent to the outlet opening, so that a feed roller is provided is that fastening devices are provided, with the help of which the feed roller can be pivoted and in such a way the magazine can be fastened that it is in engagement with the The top sheet of the stack is standing, and that facilities are provided are, with the help of which in dependence on the downward movement of the feed roller when the sheets are pulled off the stack, the braking devices can be released. 11. Magazine and feed device for the successive pulling off of sheets from an outlet-side end of a Magazine, characterized in that pretensioning devices are provided, with the help of which a stack of sheets can be lifted in such a way that the top sheets are in the Located near the outlet end, a freewheel brake is provided, with the help of which the upward movement of the stack / brakable when the top sheets have reached a position in the vicinity of the outlet-side end that a feed roller is provided that means are provided for pivotably attaching the feed roller to the magazine, with the help of which the feed roller 909844/0838 A 43 300 b - "- '' · ': April 17, 1979 - 6 - can be brought into engagement with the respective top sheet of the stack that devices are provided with their Help depending on the movement when pulling at least one sheet from the magazine by the feed roller the brake is releasable, that damping devices that work using inertial forces are provided are and that a one-way clutch is provided, with the help of which the damping devices to limit the speed of the upward movement of the stack with this or with the devices supporting it are. 12. Magazine for receiving a stack of sheets and for Pulling the sheets off the top of the stack through an outlet opening at the top of the magazine, thereby characterized in that releasable blocking devices are provided, with the help of which the stack normally against an upward movement can be blocked in a position in which the top sheet of the stack is in a predetermined position Located adjacent to the outlet opening that release devices are provided with their Help releasable the blocking devices depending on the removal of sheets through the outlet opening are so that the stack can move up towards the outlet opening that one is taking advantage of Damping device working by inertial forces is provided that coupling devices for coupling the damping device are provided with the stack during the upward movement of the same, and that means are provided, with the help of which the releasable blocking devices depending on the upward movement of the Stack can be reactivated. 009844/0838 - 9 - 13. Magazine for receiving a stack of sheets and for successive removal of the sheets on an outlet side End of the magazine, characterized in that blocking devices are provided, with the help of which the Stack can normally be blocked against upward movement is when the top sheets of the stack are in a predetermined position adjacent the outlet end of the magazine are that release devices are provided, with the help of which the blocking devices as a function are releasable from peeling sheets from the stack to allow upward movement of the stack, and that devices are provided with the help of which the blocking effect of the blocking devices as a function is recoverable from the upward movement of the stack. 14. Magazine with an outlet opening onto which a stack of Leaves can be moved when leaves are withdrawn from this through the outlet opening, characterized in that, that devices for moving the stack, damping devices and coupling devices are provided by means of which the damping devices can be coupled to the stack are to limit the speed of movement of the stack towards the outlet opening. 15. magazine with means for transporting a stack of sheets towards the top of the magazine, characterized in that spring means are provided with the help of which the stack · in the direction of the upper end of the magazine can be preloaded that braking devices are provided, with the help of which the uppermost end of the stack of leaves can be fixed in a predetermined position against the action of the spring means, and that devices are provided with the help of which the braking devices in response to the peeling of sheets from the upper end 909844/0838 - 10 - A 43 300 b ^:. "-: -""I'':": of the stack are releasable. 16. Magazine with means for positioning the top end a stack of sheets adjacent to an outlet end of the magazine, characterized in that a mechanical Servomechanism is provided, with the help of which the stack can be positioned in such a way that the respective upper ste sheet is located in a predetermined position adjacent to the outlet end. 17. Magazine for receiving a stack of sheets of which individual sheets are peeled off, characterized by the following features: a platform is provided; spring means are provided, with the aid of which the platform can be biased upwards so that the topmost Sheet of the stack is peelable; a flywheel is provided; a gear transmission is provided which is in operative connection with the platform and the flywheel and with the latter Help the flywheel can be driven to rotate when the platform moves upward, such that the inertia of the flywheel slows down the upward movement of the platform and there are guide devices with the help of which a parallel guidance of the platform during the upward movement the same is enforceable and which have a lever, one end of which is movable along the platform and the the other end is mounted so that it can be swiveled and 909844/0838 A 43 300 b -: ■:: - April 17, 1979 - 11 - handle with the gear drive means that an upward movement of the platform results in a movement of one end of the lever along the platform ⁿ a pivoting of the other end of the lever, by means of which the flywheel can be driven to rotate via the gear drive. - 12 - 9098A4 / 0838