DE2263076B2 - CUTTING DEVICE - Google Patents

Description

') he invention relates; rely on cmc cutting devices / in order to automatically cut off a strip-shaped photographic strip bearing a sequence of images ! '. vials in accordance with the clauses of the Paienian claim

π der T) T-OS H - ¹ T 400 \ -, \ ^ m- such \ orriciuiing wrote '?! ·., the \ on one; Film several pictures! abirenn; that this aJe still p. Of the '!.·'·,. irnchtung tie; - bek <: nn! ci: Schnc.dvor ^ ichumi; ■ ^! "i !! i thus the statement / 11. sK-tierbestelici'i. that the i cut triggering
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ii: ·. cii. "ihii'iiische

btasteinrichtung eiv, then lct / icn I cut one of the irepaiitc 1 ransnortsfecke The invention is concerned with the problem that by dirt or scratches on the strip-shaped photographic material which is detected by the scanning device. Failure to cut can, and that there are markings on the strip-shaped photographic material where there is can be, for example, cut marks and those of the scanning device to carry out the Sections are to be determined, often do not have a uniform distance from one another, for example in the case of roll film, certain differences in the length of the in a time interval in a camera transported film occur when the cut marks on the film together with those to be recorded Data to be photographed. The cut film pieces therefore do not have a uniform length. What complicates their use in reading or cataloging machines and their stacking in a container.

The subject of the older DT-OS 20 48 094 is a device for cutting films in strips specified maximum length at the bars between successive images due to the image edges positionally assigned scannable marks with a computing arrangement for controlling a Feed device and a cutting device based on signals from a Hildmarkentasteinrichtung and a measuring device for the length of film fed. The film length measuring device measures the distance covered after the detection of a mark and solves the Schneithorgang then off when the film length measured from the mark has reached that value. at that of the brand associated web reaches the cutting edge.

Furthermore, the LJS-PS 27 42% 3 conveys the idea, not just the marker reader to control the To make the cutting device effective, but also to comply with SehneidgutmindestUingen Length measuring device in the form of a loop feeler! s to use.

The invention is based on the object of a cutting device according to the preamble of the patent claim ! to create in the case of incorrect cuts by reading marks in the form of dirt. Scratches or the like are safely ruled out and stcis is stepped to full image length.

This object is achieved according to the invention with those specified in the characterizing part of claim 1 Funds resolved.

Since the specified minimum length of the material to be cut is equal to the image length, it is ensured that Output signals of the scanning device due to markings in the form of ve. η Schumi / put and Scratches are suppressed. On the other hand, however, the measuring device can also perform the cutting process trigger if from the last step ι one of the Image length corresponding transport route / uiücketztl is !, without a mark being detected, if So a disproportionately bivite bridge / wipe two Images. After winning the broad victory 1 then grasp the Ahiasteinriehii'ng the marking and controls the new cut. In this way the disproportionate victory becomes a result. v> that the raised stripe elements are all the same! .eye have, without (IaB Schnittt- possible in the pictures are.

The invention is explained in the following in the description of the exemplary embodiment with reference to the drawing: near ¹ ": I s shows

F i g. 1 is a partial plan view of a film strip to be cut, which serves to explain the film cut marks applied thereon,

F i g. Figure 2 is a perspective view of a first Embodiment of the automatic cutting device,

F i g. 3 is a partial schematic view of the cutter showing the arrangement of the film advance mechanism, a scanner and a film cutting mechanism;

FIG. 4 shows a partial section of the cutting device shown in FIG. 2,

Figure 5 is a view taken in the direction of line V-V in Figure 5

FIG. B is a block diagram of a control circuit of the automatic cutter of FIG. 2

F i g. 7 is a partial sectional view to illustrate the essential parts of a / broad embodiment of the automatic cutting device.

F 111. 8 is a block diagram of a control circuit of FIG Cutting device.

F i a. FIG. 9 shows the waveforms of various signals shown in the FIG. 8 generated control circuit »■ earth, and

Figs. 10 and 11 are block diagrams of two more Executions of the in F i g. 8 control circuit shown.

F i ^. Fig. 1 shows part of an unrolled film or strip of film about to be cut. The film cut marks are attached to the film along one side edge. The transparency of the film cut marks is selected in such a way that it differs from that on the film. As already mentioned, with non-uniform distances between adjacent cut marks, for example when the distance between cut marks I and II is smaller than that between cut marks I and 111, microfilm wafers are obtained. in which the length between the cutting lines la and 2.1 becomes smaller than the corresponding length in the case of another microfilm plate between the cutting lines 2a and 3a. The / wide microfilm plate would have to be cut off along the cutting line 2a 'so that e ^c - does not contain any undesired additional part 3a which can be part of the third microfilm plate and which carries data.

If there is a flaw, that is, a pollution or a scratch Hn / wipe the cut marks II and 111 is on the film, this is scanned by the scanning device established. The scanning device therefore gives a wrong signal, so that the cutting tool Jen Film follows this erroneously chosen cutting line 5c cut off ;. The microfilm platelets are therefore not given a »smooth length, and in some cases it can It is possible that the data recorded on the film, as described above, will be seriously damaged will.

Vi F i *. '. 2 is an automatic 'IiHL- Iv- ¹

one! k:
1 from i.Ts'
eme
cmc

F-i in the cutting device

1 live. It has a housing 1 and fägi m; f ler). The corner from the top of the housing is a micron film 2 in the housing I isi l'ilmsi hieifenkammer 4 üusi. 'formed. the / ÜR formation r I-iimschlcik 'serving' ,, where / u micro roll film button 8 on the front dei top plate 6 are arranged, a removable ^A ibdeckung 9, which is disposed above the upper plate 6, and an output opening 10, through which a cut film wafer 5 'is discharged, and a receptacle 11 for the film wafers.

F i g. 3 shows, located within the cover 9, a cutting arrangement A \ with a movable cutting tool 12 and a fixed cutting tool 13,> o a scanning device β, with a light source 14 and a photocell 15, which are arranged opposite one another on both sides of the unrolled film 5, and a film feeding device G having a pair of feeding rollers 16 and 17.

In Figs. 3 and 4 there is shown a rotatable shaft 18 of the feed roller 17 which will be rotatably supported by a pair of suitable holders, not shown and located within the housing 1. At one end of the shaft 18 there is attached a gear wheel i9 which meshes with a gear wheel 21 which is carried by a rotatable shaft of a pulse motor 20. In this way, the rotation of the pulse motor 20 is transmitted to the feed roller 17 through the gears 21 and 19 and the rotatable shaft 18. An eccentric ring 22 is attached to prevent the gears 19 and 21 from rotating in the reverse direction. Alternatively, it is also possible to connect the pulse motor 20 directly to the rotatable shaft 18 of the feed roller 17.

F i g. 4 shows an intermediate gear 23 that of a Drive shaft of a non-gc / cig'.cn motor carried is, in engagement with another intermediate gear 24. which is rotatably and displaceably carried by a Steucrwel-Ie 25, which in turn rotatably r, i a Pair of holders is mounted. A ratchet wheel 26, which coincides with the gear wheel 24 is rotatable. one Retaining disk 27. and a crank arm 28 are also, and / was in the order mentioned on right end carried by the control shaft 25. A friction disc 29 is between the gear 24 and attached to a slidably arranged part 32 which is laterally displaceable on the control shaft 25 is arranged. Another friction disk 30 is between the 'kneecap 27 and the ratchet wheel appropriate. A lustier nut 31 provided with an internal thread is in engagement with a 'Xulien thread 25; of the control shaft 25. A spiral spring 33 is between the lustiemiutier 3Ί and the gliding slidable part 32 clamped, so that * the force of Spiral spring through e'm: rotation of the] ustionnu'ter can be divided. The Haltescheibv 27 and the Slider movable: Part 32 slide relative to the corresponding'- friction disks 29 and 30. and / was even if the gear 24 and the Kimkrnd been dreiv by the intermediate gear 23 so that the Sieuerv.elie 25 is normally rotated. F i g. 5 shows a pawl 34th the over Pivot pin 27, schwenkbat an de-! KiltesJii

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in be

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one

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'' IaUe 6

. ■ iienkantei (ic

■ it! VonielK; in ;: contains ■ cm unrolled film rn 7 guided; forward he 7 are here length ¹ · mgs! 'Ure for the film

C,! HtOIP ,,, ^1st : Sri angeienki is. as well as a.
llaltescheibe 27 and the pawl 34 derar; sp. · ¹ that the latch 34 eme un I ^! hr / ei!: ersinn wi; Preserves preload. The front end reaps star

the mild
tied together
tenTei ¹ 34

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Ij, η Activates a member of a D: ehM <| en <

is. stands li u a sliilcnf'ίρμ; ·, iusye ^ ilde-

the clinic: 34 im. Intervention. s <; that the rod:. 'Miu ^T des Drehsolcnoid ·· 37 mi Direction: des

ν .. '!' schobt.r VA! '' ti and iiann after a ¹ '/ ■:;! in: b: v 'vi ^ iMiig'-kige / uruekkehr' ..

When the rod 36 is moved in the direction of arrow a , it is removed from the pawl J4 so that the latter can perform a clockwise rotary movement. The tooth 34> of the pawl 34 comes into engagement with the ratchet wheel 26 so that the retaining disk 27 can rotate uniformly with the ratchet wheel 26. This causes the control shaft 25 to rotate.

A lever 38 is pivoted eccentrically to the crank arm 28, so that the rotational movement of the crank arm 28 is converted into a reciprocating motion. A cam 40 is on according to FIG. 4 right end the control shaft 25 is articulated in such a way that it actuates a microscope 41.

One end of a connecting lever 42 is pivotably connected to the lever 38 via a pivot pin 38i, while its other end is pivotably mounted on a shaft 44. A cutter cutter 43 is fixedly attached to the link lever 42. When the lever 38 is displaced in the direction cies arrow b , the connecting lever 42 pivots about the shaft 44 counterclockwise, so that the movable cutting tool Π. which is carried by the holder 43, / u is forced to move downwards, whereby in 2s interaction with the fixed cutting tool IJ, the unrolled film 5 is cut.

In I 1 g. b is a control circuit in l-form of a block diagram. This contains the scanning device B- for determining the cutting marks. Clip-Elops 102, 103 and 104. an AND element 105. to which the output of the scanning device B \ and the output of the flip-mop 104 are connected. The control circuit also contains an AND element 106. at its Inputs a clock 107 and the set gears of the 1 lip-Klops 102 and 103 are shot. Dei -VH ^. · .'Ii: des UN Dv ι i; cus ϊίτό iSi; ~ ii 'Je: Filmvorschupvornchuing (' · and one; Zahier 109 verrr.mderi. l.): e Fiimvorselu'b'.ornchiLrig '- c: r.; \!' · den

20th

of the

i \ ki: mpiiisen Jc-

Tjk'gebers 107 is driven. 15 counts HW / ahh c!: <- clock pulse c P-. the dutvh das i ND -fined 106 go through and is reset according to the backsetsai'-g.mg de ¹ -} I ip-flops 102 .

The .S'.eue'si naliung contains lerner cru '"Dec->ci; erer 4", 110. which is coupled to the output connection of the counter KW in such a way that two signals P; and P _{1 are} emitted when the counter nat 109 a certain number of iaKiimpulsen P- paid. the signal P ₂ is \ or the signal Pi is generated and the feeding of the unrolled f lirns 5 can be adjusted 109 by adjusting an adjusting crtes of the payer. a delay line 111 is usgiingv with the \ ; connection of the AND gate 105. It is outputted to the reset input connection R of the flip-Elop 104 , to whose set input connection the output signal P: of the decoder 110 arrives. The output signal P _{3 of} the decoder 110 is applied the reset input terminal R of the flip-flop 103 and one of the output terminals of an OR element 112. The other input terminal of which has the output signal of the AND element 105. The output signal of the ODf-RC element 112 is sent to one of the two outputs isse applied a 1-Giieds ND 113 at the other:.! ng.ir, gsansch USS the Au'-gangssitrrai of> e: zaiisga igs vies 1 IIP-f lops 104 abuts the Ausgar.gssig'iai of the i . ND-i'.ieds Hi wwd the ί ι! N ^ fruidVorriv. "■ ·« .- ■ !: Λ . "I ^ s-'e".'- ,: i. Li'c c "en lmpu '> Ps , i ^ i; ■ <"·:. W cnn the unrolled IiIm 5 is cut off in a certain length. 15 pulse l \ is applied to the Selz. Input connections .V of the Elip-Flops 102 and K) J., So that these are set.

In the following, the mode of operation of the control chaining described above is described in detail will.

a) Issue of a cutting mark

As soon as a cut tiarke is determined by the scanning device li \ , this sends a signal to this I .N D element 105. Since the set output signal of the iiip-FIop ·,

104 on the AND-GI cd 105. the latter emits an output signal. which backs out the EIi ₁ D-Flop 102. This leads to the fact that the clock pulses -on the clock generator 107 cannot get through the AND-Ghcii 106, so that the pulse level 20 det \ urschijbvorrichtung C- is stopped. The continuation of the unrolled film 5 is thereby interrupted. When the ip-flop 102 is reset. in the / iihiler 104, too. The output signal of the AND gate

105 also reaches the AND element 11! Via the OR element 112. Since the "set output" signal of the flip-flop 104 is applied to the AND element 1,13, the latter gives a -Xusuangi signal to the cutting device · ,, so that the ^ bge'oihe ί iim ir your determined cut length vird "This beiieute :. o.tß according to the Au \ L ', inj-xi _-: u i of the UN IJ (: üeus UJ di-Drehsoienoid 37 (cf. I, l \ - -..' .: \ Δ "·) excited wn \ i. So that the rod 36 in Riei", '..- ti.-: ovhc ^ iw irci. Tim the kiinke 34 free / Ligeben Di _L · Kiinl-e 34 w "-el umer Ul; · W,; k: mg of the force Je "springs J5 in the '■ i-rzeisiersinn ged-ehi. so that. inr. den; Zaiinraü 24 u: r, i, i'.ift. The pawl 34- is therefore rotated giv-ichlc-rniig with the kiins.rad 26, so >. \ Λ'ή the hilt disc 27 ure; darr ·:;: uch die ^% i eiie '^ - ν'ie: JL ^: ui ^r rn' ^ l! UL ':;. «Je! Miii;! E ^[ i- Nliri ^ ei -.- >: · 28 avoided planes 38 win! D.ihti :: K-ch-uii. ·, -Ver'-c ^ i-i'e'i. So that dr- hewegl'che ^% -e; v "iekiv \ -..- rk / ei; -_ · 12. 'Λ e; ^ lies .ι ^'.:: Jem H ^1'; -e &quot; ^r \ i ^. ΐ. l'.ct se ne ^; '- e ■' s ^, i; i,! r!]: '.erbiüdniigsiK xi 42 t etr. ^ er; becomes, to citicr -. ■ .-. h liniegericntelen movii: ;; _: _ ^T e / w;:; iL ^r en -. '. :; \ i. . -, - ■: :( The ';:!. ^R-üero: te film 5 in /'d-air-'.iei .Mrken: ■ ": _w: i e!' - s S! ₁ HpJ- Jw et kze.ig 1 3 Jurc; t; re '~ r-; will.

W e:; ii d; e Slcuerwe Ic 25 a ί nidre · "..: ■ ,; , :: <; ■ ^ ; i!:;!; ■; ünci d; e rod 36 / v> is ^ hen /eiti/.h in mie .iP'anuiiei ^ .e Sieiumg /'.; return is. the Staiiire 36 w leather: n f'mgril! 'mi; lien- -, iufeniorrui 'nus ^ eb ^ deic :; part 54 of the pawl 34. so uao the I iaitescheibe 27 is released again by the ratchet wheel 26.

As soon as the older film 5 has been cut off. will the movable tendon tool 12 in its starting position returned. In this way, a stop takes place according to the detection of the cut mark of the unrolled film and a severing of the same by means of the Fiimscnneidvornchtung 4 -.

The cam 40 rotates; in accordance with the Steuerw elk 25. so that the microscope 41 is actuated as soon as the unrolled film 5 is durchtrenm. In this way the impulse Pi is given, which indicates the termination of the tendon process. According to the pulse Pj, the flip-flops 102 and 103 are brought into the set state and the set /.- Aussansssignaic oerseiber arrive at the AND element 106, so that the laMi'-nriulsi P J is the AND-Ghec ¹ 106 get to the pulse ^{motor 20 Jer 'v} oisehunvornchtung C. The imp.

to

The Takiimpiilse / 'left by the AND element 106 also reach the counter 109. As already described above, the counter 109 now gives the output signal /'> as soon as it has counted a certain number of clock pulses P \ from which arrives at the Be z input terminal of the flip:> flop 104. It then emits the signal P _s . that is fed to the flip-flop • 01, so that it is reset. As soon as the flip-flop 103 is reset, the clock pulse P ₁ cannot pass through the AND element 106, so that the pulse motor 20 of the feed device (is stopped, which also causes the film feed to be interrupted. The output signal / Ί is over the OR element 112 is also fed to the IiND element 113, to which the Sc ".z output signal; .il of the flip-flop 104 is applied. The AND element 11.3 therefore emits an output signal, so that the film cutting device Λ ι is operated in the manner described above.

The work steps described above can be like can be summarized as follows:

As soon as the unrolled film is fed a certain distance. the further film feed is interrupted, regardless of whether a film editing maikc has been completed or not. Then the film cutter is operated. UiTi cut through the unrolled film /.ti. After the end of the film cutting process, the pulse becomes l ·. \ <> n the film cutting device A-, create! so that the fip-flops 102 and 103 are set. The clock pulses P 1 then pass again through the 1'ND element 106 to d;: m pulse motor 20, whereby the film thrust is resumed. If a cut mark is determined, the film is severed in accordance with the signal emitted by the display device B in the manner described above.

b) Erroneous detection of defects on the Film like (lick, scratch or similar

When the scanner B-. If a correct cut effect is determined, its output signal, which is passed through the AND element 105 and the delay line 111, reaches the flip-hop 104, so that it is reset. Even if the scanning device B then subsequently emits an erroneous signal corresponding to the determination of a surface defect such as a dirt sill. a scratch or the like emits, the flip-flop 104 is already reset, so that \ on the AND gate 113 ken output signal is obtained. As a result, the film cutting device A, is not operated, so that the unrolled film 5 is not severed in this case. In the event that the scanning device B < emits an erroneous signal when the counter 109 counts the clock pulses, the film cutting device thus remains in the de-energized state until the unrolled film has advanced a certain distance. In this way, the film can be completely prevented from being cut off by mistake.

In the embodiment described there is a Resetting of flip-flop 104 in response to the signal delayed in delay line 111. It is however, the delay line 111 can also be used remove. This means such an arrangement of the Decode UO. that the signal is output, w hen the reset counter 109 begins, the first Pay clock pulses. Based on the signal output from the decoder 110, the flip-flop becomes 104 reset so that the scanning device Pi incoming signal is interrupted until the count: 109 a certain number of clock pulses counted i'i,; · .. so that .uif an erroneous cut off in this way of the film avoided wildly.

The described automatic Filnschneidvorrich The structure of the device is very simple, as the counter goes down when the cut mark is determined

ίο will provide. The film cutting device is corresponding corresponding to the output signal of the counter operated, the latter a certain number of clock pulsesi has gez.ülilt, so that cutting off the roll film, de had to be advanced a certain distance

is done independently of a film editing mark. Self If the distance between the film cut marks is sometimes long, the film can be flattened in this way cut of a certain length. The automatic film cutting device is suitable for this

: o for use in conjunction with the Wiederaul finding the information. It is also possible to use both Side edges of each film reel using a pair of cutting tools from a movable one cut with a solid cutting tool. Since dit

: s drives connected to the film advance mechanism pulse are counted by the counter g <_, can be de Rolled film cut n pieces with a certain length with a very high accuracy. I), a circuit is also provided that allows the \ on de

ic scanning device, incoming signal is suppressed, er no operation of the film cutter follows before the counter has reached a certain number of voi Counted clock pulses. This also applies if you Scanning device emits an erroneous signal, ent

3s speaking of the determination of a surface defect de Film like a stain of dirt, a scratch or something similar so that an erroneous cutter of the film can be completely avoided.

In FIG. 7 shows a second embodiment which is described below. The second The embodiment includes a pair of film advance rollers 211 and 212. which are carried by a rotatable shaft 21 :. The rotating shaft 213 is distant a ratchet wheel 214. When a not shown ratchet ir

When the ratchet wheel 214 is engaged, the rotation of the rotatable shaft 213 is stopped. Further, an electromagnetic clutch 215 is mounted on a shaft 21t. In one unit constructed gears 21i and 219 mesh with a gear 217 and a gear 220 which is of a getragei ^r drive shaft 221st The drive shaft 221 is via a bevel gear 22; frictionally with a in F i g. 7 motor not shown connected. The bevel gear 222 is attached to the right end of the drive shaft 221. A coder 223 is attached to the left end of the shaft 2 \ l according to FIG. It is designed so that it determines the angle of rotation of the shaft and generates a corresponding signal. The type of coder of this type is known so that a more detailed description is dispensed with.

A control circuit for the second embodiment is shown in FIG. The control circuit contains a memory 227, a pulse counter 228 and AND gates G to Gj. The input signals are laid out as shown by the arrows. Eim

fr? Double never indicates a mechanical clutch. the Waveforms of the ir F1 g. 8 obtained output control circuit shown signals are shown in FIG. 9 shown.

The following describes the mode of operation of the / broad embodiment with reference to FIGS. 8 and 9 are explained in more detail. As soon as the two feed rollers 211 and 212 of the feed device C> perform a rotation, the rolled-up film is fed. Accordingly been generated pulses l \ from the encoder 223, as is the case, in in F i g. 9 is shown. and the counter 228 via the AND element (V _1. This is in the open state when the memory 227 supplies an output signal to the AND element G \ , which is generated only when the memory 227 is set. If de ¹ '7: ih or has counted 228, a certain number of pulses AV ie, when the unrolled film is advanced by a certain length it outputs an output signal This output signal passes through the aND (Jlied G, and is referred to as!.... Film cutting release signai / '"placed on the AND gate Gi , as shown in Fig. 9 at / O. The unrolled film can now be cut off. If a pulse P' -, (c" in Fig. 9) from the scanning Ai:.. arrives for the film cut mark simultaneously to the AND gate Gi, the AND gate g) as in TV, in F i g 9, the output pulse P \ ab This is as VorschubunterDrechungssignal to the feeding device C ; and also applied to counter 228 and memory 227 so that they do a reset experience. The output pulse P ' _s continues to reach the film cutting device .4 :. so that the movable cutting tool is actuated during a time interval. This time interval / between η and t: is in FIG. 9 shown at / Ii. The unrolled film is now stopped, held in this position and cut off. In this case the encoder 223 is not energized so that the pulse P '_; disappears. As soon as the unrolled film is cut off. gives the cutting device ■ 'an Impi. Is P't off. as it is in Fig. 9 is shown at d, indicating completion of the film cutting operation. The pulse ΡΊ is applied to the memory 227, so that it is set again, and also to the film advance device C ':. so that filming is resumed. Then the encoder 223 is operated so that it outputs the P pulse.

When the pulse P ' _r . ie the film cutting release signal is not generated, the AND gate G. remains closed. In this case, even if the scanning device A ?: erroneously emits a pulse in accordance with the transmission of a smudge or a scratch on the unrolled film, as shown in FIG. 9 is shown at ei. it is not possible for this erroneously given pulse P \ to pass through the AND element G ₁ . The cutting device 4; is therefore not operated so that the unrolled film is not erroneously cut. Therefore, it is possible to completely prevent the film from being cut by mistake by appropriately selecting the timing at which the film cut release signal Pi is generated.

Da> high level at gt> from F 1 g. Fig. 9 shows the duration of power supply to the drive motor of the feeding device C ;. The low level at h shows the length of time during which the feed device C; is actuated. Finally, the high level at / ₀ indicates the length of time that the movable cutting tool is actuated.

In the second embodiment, a film cutting mark erfnigi according to the determination of ^one-1 resetting of the measuring device which measures the feeding of the unrolled film by a certain length. She then gives J.is I! ImschneuMreiiM ^ CMgr.a · a! ~ Worm cine

transports a certain length of the unrolled film is bated. so that the cutting device has an actuator for cutting the rolled film only dam finds out when both the film cutting enable signal and the signal from the scanning device are the same / eitij are present.

When the film cut release signal is not present There is no cancellation of the film cutting process even if the scanning device has a dirt stain or a scratch on the unrolled film scans. This way cmc becomes erroneous'. Complete the film cutting process avoided.

In Figs. 10 and _Il: ind more Ausluhningsformen the control circuit described. F i g. 10 line a block diagram. The output signalil of the scanning device Ai are attached to an actuating shell of the cutting device A _1. and the signal coming from a heating circuit O, 'of a coding control unit D is applied. both of which have a time delay which is generated by a delay circuit. The output signals of the scanning device Ai and of the actuation circuit D are fed to a feed interruption circuit C- of the frame _{feed device C 1} , which represents a control circuit for the disengagement of the electromagnetic clutch 215 (see I-Fig. 7) and then the turning wheel 214 persists. The output signal obtained when the film cutter 4 has cut the unrolled film. arrives at a circuit C for restarting the film advance which the advance device C belongs to. This circuit CY provides a control for one of the modes of operation of the feed

opposite operating

interruption crisis C
show

The signal generated by the scanning device / ?, for the mark marks is fed to a reset circuit D via the coding control unit IJ. The cutting device, I ₁ . the scanning device B, as well as the Nm feed device C, are "in terms of their construction similar to the devices described above in the second embodiment

«One of the few in the block diagram of the F i -. M. Ausungsfonn shown the Steuerschaltuni: is ö in the event of a film cut mark being communicated by the

S " ^ri i ^ia f ^ß > ™ impulse b is emitted, which passes through a UULK element 325 to the pre-feed breaker, -crus C, the film pre-feed device C ₁ and to the control circuit .4, 'of the cutting device A ₁ , which unrolls the Film cuts after it has been stopped and held The pulse b _{coming from the scanning device S 1} is also fed to a memory 326 and a counter 327 so that they are reset as soon as the cutting device / A ₁ has cut the unwound film. stick a _{l]] s Λ that the} end of the cutting process is fed to the circuit G 'to switch on the film advance of the non-advance device C ₁ , so that the advance of the unrolled film is resumed, VK ¹ " ^{Pulse a Alrd is} also fed to memory 326 in order to set it

I'm recording the advance of the unrolled film. , ^{he the} encoder D during the feed em pulse signal d. which succeeded via an AND gate 328 on the • -nier J27, so that it is paid. Thus, ^{UTT X} " ^r ^ ^{hub d} ^ unrolled film is measured.

If the cut marks on your KiIm are too far apart, as indicated by the marks II and III in K i g. 1 is shown. the / ahler 527 emits a pulse c when the film has advanced the distance corresponding to the image length. > Diesel 'impulse c is fed to the feed interruption circuit CV di.r film feed device CV and the delay circuit A ₁ ' of the cutting device A \ via the ODKR-Cjlied 325, so that the unrolled l-'ilni stopped and longitudinally the dashed p .. line 2, ι \ on I-'i g. 1 is cut.

When the scanning device lh detects the next intersection mark III, it delivers the pulse b. so that the unrolled I is cut off along the dotted line 1; t in the manner described. ι s

So Ks occurs with each of the cutting device generated signal a setting of the encoder and then cutting off the kilometer. as soon as the / ahler the past counted the correct number of pulses. and even if no brand is determined Even if, therefore, the distances / wipe the Cut marks are too resentful, the unrolled film is cut into pieces with exactly de so determined l.usyou. The cut off I ilii'.plätt eh en therefore all have the same length. so that sn in the usual way in a filing table. in one for di < Recovery of microfilm discs is certain! Device or stored in a similar way: know.

In addition 6 blue drawings

Claims (7)

Patent claims: 1. Cutting device for automatically cutting off a strip-shaped photographic material carrying a sequence of images, with a scanning device for determining the cuts to be made between the images and with a measuring device for ensuring a predetermined minimum length of the material to be cut. characterized in that the specified minimum product length is equal to the image length and that, if necessary, the measuring device (Ci. 109, 1 10) alone triggers the cutting process. 2. Apparatus according to claim 1, characterized in that when the cutting process is triggered solely by the measuring device (C. 109, 110) , the following response of the scanning device (ßi) triggers the next cut. 3. Apparatus according to claim 1 or 2, characterized in that the defrosting device (By. B :: fij) responds to edge markings (I, II. III). 4. Cutting device according to one of claims 1 to 3, characterized in that the measuring device has a counter (109; 228; 327) to which * 5 of a pulse sequence (Py. P'-y. D) synchronized with the feed is applied and then outputs an output signal when it has counted a predetermined number of pulses. and which is reset as a function of an output signal from the scanning device (Br. S :: Si). 5. Cutting device according to claim 4, characterized in that the feed device (C]) is provided with a pulse motor (20). which transports the strip-shaped material (5) when a clock pulse train (P]) is applied , and that the counter (109) counts the clock pulses supplied to the pulse motor. D. Cutting device according to claim 4, characterized in that the counter (228; 327) tells of an encoder (223; D) coupled to the drive motor of the feed device (Cy. Cs) , pulses (P \: generated during the feed). 7. Cutting device according to one of claims 4 to 0, characterized in that a logic circuit (112, 113; Gy. 325) for receiving the output signals of the scanning device (By. By. Bs) and the counter (109; 228; 327 ) is provided whose Vjsgangssignai triggers the cutting process. 50