DE1447864A1 - Electrophotographic copier - Google Patents

Description

PATENT LAWYERS

9pfr & 9. ^ ieLrd ^ JUlSer- ^ em ^ H 4 7 8 6

PATENT Attorney DIPL-ING. R. MOHJER-iORNER PATENTANWALT DIPL-ING. HANS-H. WEY

lERLIN-DAHLEM 33. PODiIELSKIAUEE 68 8 MÖNCHEN 22 · Wl D EN MAYE RSTRASSE

TIt. 0311 742907 TCUGR. PROPtNDUS TELEX 0114057 TEL. 0811 ■ 225585 ■ TELEGR. PROPINDUS TELEX 0524244

Ϊ t4 47 8§4 9 Berlin, 6 September 1968

Ing 0. Olivetti AG., S.p.A., Ivrea (Italy »)

!!! • ktrophotographiachea copier

The invention relates to a photocopier, in particular an electrophotographic copier, for reproducing an original guided along a lighting path on a document path, depending on the type the introduction τ different long distances covered copy sheets

Xa let a photocopier known in which a copy sheet is automatically picked up from a copy sheet supply accommodated in the device · In another known Device of this type, the copy sheet is automatically cut from a copy paper roll housed in the device) while in another known device the copy sheet was put together "with the document being inserted into the machine by hand"

A great inability to adapt to work shows another known copier, in which the copy sheet either

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from the outside! inserted by hand or automatically by one Roll can be cut off «But there is continuous loading of the copy sheet »as well as the document from land a tiring activity that can give rise to errors *

In addition, sioh leaves with the mentioned photocopiers a precise alignment of the document in relation to the Direction of advance cannot be achieved »furthermore, for the The lanes of the copy sheet and the document as well as their mutual arrangement require a relatively large amount of space Furthermore, the electrical circuits controlling the known photocopiers are expensive and fragile because a large number of electromagnets and electrical contacts are used »

The invention is based on the object, in a photo * copier »especially an electrophotographic copier» for the reproduction of an original guided along a lighting path on a lighting path ; travel distances of different lengths depending on the type of introduction Copy sheet to create the possibility that the movement of the copy sheet over the exposure path in each case eynohron with that of the original via the Beleuohtungsbahn » indifferent »whether the copy sheet from a storage tab or is taken from a supply roll

909807/0755

To solve this problem, it is proposed according to the invention for a photocopier of the type mentioned at the beginning, that the movement of the copy sheet over the exposure path in each case eynoaron ait that of the original takes place via the lighting path in that one scanning the original through a sensor-controlled device through a two-position dial in its first position is adjustable in such a position that when you feel the front edge of the Originals a copy sheet from that arranged inside the device Storage stack is removable while the Vorrich ™ device duroh the selector in its second position can be set in such a position that when you feel the front edge of the original, the copy sheet is also within of the device arranged roller can be introduced into the exposure path and when the trailing edge of the original is felt is cut from the roll with the sensors spaced apart in the lighting path, that of the difference between the various copies of the copy sheet when it is removed from the stack or from the roll before it is introduced corresponds to the length of the path to be covered in the loading track »

A static copier became the state of the art known, ie. one with which no problems regarding the movement in connection with the treatment of the original, as this occurs during its illumination or · constantly at rest during the exposure of the copy sheet

909807/0755

With devices of this type, questions about the copy paper supply may arise with regard to the time required for the corresponding Yorgganges, but also with regard to the accuracy of the gate gears for c? .is copier paper supply executing movement in synchronism with the respective processed Papierfeegens carried miss _s and ösren solution is the object of the invention ₉ do not occur in this known type devices on ©

A copier designed according to the invention can be easily adapt to the different working processes., whereby in any case, an exact alignment of the copy sheet with respect to one another the original ear pin piece is guaranteed «furthermore the device can be built in an extremely compact design »

Furthermore, in the copying machine according to the invention, the insertion of the same to be duplicated 3chriftstückes _$ accurate alignment and nsögliah the putting into operation of the device by a single and simple activity »

Finally, in the subject matter of the invention, the control of the various functions and the preselection of the various _{modes of operation are achieved by a combination of mechanical and electrical devices 3} which prevent the occurrence of positioning errors when the components are reduced to a minimum »

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The drawings show an exemplary embodiment of the subject matter of the invention

Figo 1 is a vertical section through the photocopier ' device of the invention,

Tig »2 runs parallel to the section according to FIG. 1 further vertical section through the device »

Pig 3 the electrical circuit diagram of the device, Pig «4 a perspective view of the device,

fig · 5a and 5b show timing diagrams of the operation of the device·

As can be seen from Figures 1 and 4, the copier consists of an upper table I ₁ on which the original (document) to be copied is placed in order to be inserted into an opening 2 which is an entrance to the lighting unit *

The document can be moved sideways so that its right edge scösst against the edge guide 3 to a to obtain a precisely aligned copy «Then the document is manually placed between a first pair of rollers 4, 5 introduced which belongs to a document gate feeder, indicated generally at 6 and in the rear Part of the device lies · The upper Tieoh 1 can be swiveled up

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a horizontal axis mounted * with the left border of the table 1 in FIG · 1 coincides * When the table 1 against the action of a spring, not shown, is pivoted downwardly, a switch MSP operated _s thereon U ₀ a _0, the Sehriftstück ^ Vorschubeinriehtung 6 energized _fr Thus, it is obvious that the arrangement of the inlet opening 2 a s Eiufülir above the table top. 1 of the document without having to hold it rom the operator, as is otherwise necessary with known photocopiers, and that a more precise page alignment of the document than with known photocopiers is achieved and the device can be easily switched on when the document is inserted »

Dia Söhriftstüak feeding means 6 comprises two side plates 7, between which the three drive rolls are rotatably supported 5 »9 and 10, which by a not shown in the Schndttzeichaungen motor M via a right on the side ä @ s device arranged transmission 12 (Mg »4) are continuously rotated» The drive rollers work together with driven »rollers 4» 14 »15, 16 _S 17 and 18» The lighting path for the document to be copied consists of the document guide 8, the pair of rollers 4 and 5 _{t of the} two document guides 19 and 20, the pair of rollers 9 and 14, the two guides 21 and 22, the pair of rollers and 15, the guide 23, the pair of rollers 10 and 16, the lükrun

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on 24 and 25 »the pair of rolls 9 and 17» the two guided tours 26 and 27, a lighting station 29 and the pair of balls 5 and 18.

The guide 27 leaves that reflected by a reflector 32 Light from a lamp L through, whereby the reflected image of the document through a lens system 33 and a Mirror 34 is projected onto the photosensitive copy sheet which is at the same time in an exposure position 35

A guide device 30 can be set beforehand to "single copy ¹¹ " by means of a button (not shown) (this position is shown in FIG. 1) can then be taken away duplicated document by the operator _e to this end, in order to facilitate the removal of the copied document in extracts from the plate 31 in the upper table 1 has a lateral opening 11 is provided (Figo 4) ·

As an alternative to this, the guide device 30 can be made by means of the Knopfeü can be rotated counterclockwise about the axis of rotation 61 and thus set to "multiple copy", in which position their surface 38 with the drive roller 5 or respectively the driven roller 18 cooperates to the writing "

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piece back into the first pair of rolls 4 »5 of the Beleuohtungsbahö to introduce ^ when it comes through the last pair of rollers 5 * 18 comes out of this path »

If the guide device 30 is set to ^H reversed copy ^H »the document runs repeatedly through the lighting path in order to receive several copies, while the swiveled edge 37 of the guide device 30 prevents a new document from being inserted by mistake»

The feed device 6 can be removed from the copier. be taken to inspect her and take out about, to allow entangled documents · For this purpose, the two side contact plates 7 are the gate push device 6 rotatably to a limited extent, mounted on pegs 26 fastened in the frame of the derate »

The photosensitive duplicating material can consist of a paper base, which is connected to a photoelectriach conductive schioht is provided, which is made of, for example, zinc oxide finely distributed in an insulating binder consists"

The exposure path of the copy sheet includes a loading station 39 * in which a uniform, electrostatic charge is applied to the photoelectrically conductive layer of the copy sheet is, as well as a popular act 35 in which the

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Tta dtm is reflected on the copied document dit photeelffektiooa loitondo layer is projected to dtrtn tltktrtstatisohe charge in dtn illuminated areas »to roduaieren, whereby on the photoconductive BtAiOAt oiAt Iatonto tloktrottatittht figure dtt Bohriftttuekea is produced · lerner lot oino Entwicklungsoatatiott 40 Tor Seen, ixt dor a development powder with the photoeloktrisoh conductive bchioht in contact is brewed »ao dato iaa powder in dtn places of these Layer sticks, dio the dunklon studs doa Schriftatüoktt ontoproohon, from donon dio electrostatic charge BiOAt has been removed, so you data on the copy sheet a Pulverattildung doa document receives »Welter iat noch oino ftaleratatlom 41 provided, in dtr the powder that has been developed as a picture is gttohmolsen in order to last to be attached to the dome arch

ItLtttlt drti pair of feed rollers 89 and 90, 91 and 92 aowit 93 and 94, the copy sheet is moved over this path, with the great 89 »91 and 93 being driven by a gear with dtm Motor M connected drive rollers are

With the help of the control dta Zwtiattllungtwähltrs, ι · Β · tints still on. etsohroibtndtn selector button oa ium operation with copier oven Tom Kopiertogenetapti οdtr ium operation with dtr copy sheet odor copy paper roll can either be taken from copy sheet treason 43 or a τοη the copy paper

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roll 44 cut copy sheets in the Beliohtungefoahm were introduced

Copy sheet removal device Consists of a universe - Cream roll 53 »You calibrate from your £ & fig» 1 with to 11 sucked out llnism drawn initial rest position in a. dashed geseiohnete Endstollung can move to thereby dea first copy sheet from ®insm copy sheet stack (& ± © g) 46 mediation attack through awei lüisrungen 47 und through between a pair of feed rollers **! 49 and 5 © eiiistäffihren

ZXL this purpose, the Äbnahmerolle 53 "connected nkb 'x' to a clapper 55 articulated arm 54» D @ r clapper 55 is on an a 'with a echw machine frame mounted, Agate 56 rotatably mounted and has an extension 57 nit a Nookenetöaeel 5B which cooperates with a bracket @ ii93i2 @ ib · 59 elwsir with the driven rope Üntourenkupplung ext composite 60 whose driving 'portion constantly on the shaft of the engine K eye on _t a Setriebe is "concluded · When the clutch 60 is actuated becomes, as will be described, the hook disc 59 makes one complete revolution and then stops, causing the should 55 to "perform a ganaen Bah from its rest position to the end position to take off a bow and then return to its rest position »

7/075 «

Me Bolle 4 kit lends delicate paper is on one. Core 05 wound up »which can be rotated between two lateral long 64 is stored «The roller 44 can be lifted out of the fork-shaped bearing opening in the cheeks 64 ·

The cheeks 64 and the transverse part 6 $ connecting them form a container for the copy paper roll; ee aind ropes a »frame that can be removed from the left side of the device · for this purpose there is« cross piece 65 the carriage is provided with a series of rollers 66 and 67, " dl · run on guides 68 and 69, which in turn run on one Borrow tob rollers 70 and 71 can be moved, which are rotatable on a fixed. Part 72 de · the part of the copier are stored * glue can also be pulled out of the carriage guides 68 and 69 pulled out to support the carriage, stops are provided which limit the movement of the guides to approximately half of the movement of the car

Iwel arms 75 are rotatably mounted on pins 76 which are each attached to the cheeks 64 of the carriage carrying the paper roll. Two paper feed rolls 73 and 74 are rotatably mounted on one arm 75. when the roller 73 is pressed against the roller 49, the ven • ine * constantly engaged clutch 52 is driven.

but will »with its driving part about a company

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is connected to the motor M »When the clutch 52 is engaged to rotate the pulley 49, its rotation is transmitted to the balls 73 and 74 and the paper 42 is guided from the paper roll 44 to the loading station 39. Optionally, the arms 75 on ^sl Kopierbogenstapei made ^lf wherein the pair of rollers 73 and 74 are lifted and the paper feed is inhibited from the paper roll 44 ₈ as the roller 73 is not connected to the drive roller 49 into engagement c

When the paper roll carrying trolley is seitlieh pulled "to insert a new roll of paper, the selector knob to" Eopierbogenstapel "· In front of the re-insertion of the car into the device, the free Bn.de the paper roll © under these circumstances easily between the roller 73 and which are introduced under spring pressure against this bearing roller 74 _ö

In order to cut a sheet of paper the length of the document from the roll 44, a cutting device is provided with a fixed blade 78 below and a movable upper blade 79. One end of the blade 79 is on the device frame and the other end on a vertical rod OO articulated, which in turn is articulated to a crank 81 which is attached to the driven part of a single clutch 82, the driving part of which is constantly connected to the shaft of the motor M via a gear

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Ψ T I

The charging station 39 has an upper electrostatic screen 83 and a lower electrostatic screen 84 »the elektrisoh are grounded and are surrounded by two negative wires 85 or two positive wires 86 »The wires are stored horizontally, see above that they are the full width of the between the two Extending umbrellas running through a sheet of paper »by means of a shift to be carried out later is between the wires 85 and 86 generated a corona discharge to the to charge the light-sensitive side of the sheet of paper negatively in relation to its opposite side »

Between the loading station 39 and the feed rollers 39 and 90, a roller 95 is rotatably mounted in a slot 96 of the rack frame, which causes the sheet to form a loop with its weight and thus prevents the rollers 89 and 90 from eening when the blade 79 is actuated To snap in a bow

The exposure station 35 has a supporting paper guide 87 and a front transparent guide 88 on »

The development station 40 is of the "magnetic brush" type and has a container 97 for the developing powder made from a mixture of pigment powder and magnetic carrier powder

A rotating body 98 made of magnetic material is in the container 97 rotatably mounted and has the shape of a cylinder

909807 / 07S5

with a plurality of grooves or with one or more spiral-shaped ribs on its surface »This rotating body is constantly connected to the shaft of the motor M via a gear »

A permanent magnet unit 99 is arranged in such a way that it forms a magnetic field with horizontal lines of force which run from the magnet 99 to the rotating body 98 and thus cross the entire width of the copy sheet passed between the rotating body 98 and a non-magnetic guide 135 © The jumps on the rotating body 98 therefore from the container 97 Tsilchea of the magnetic carrier powder, to which particles of the dye powder adhere by the effect of static electricity, so that the latter particles adhere to the surfaces of the sheet that were not removed during the exposure, while the carrier powder is then returned to the Container falls back »Two worms 13 & vnia 137, which are constantly connected to the shaft of the motor M via a gear, are provided» to evenly mix and distribute the developing powder in the container 97 »

The container 97 and the other parts of the developing device are attached to two arms 138, the fork end thereof rotatably mounted on fixed pegs 139, so that the developing device is either partially or completely can be removed from the machine for inspection and cleaning as well as for filling with new developer powder can"

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The fixing device 41 has a lamp T? avi _t which works together with a reflector 140 in order to melt the powder adhering to the photoelectrically conductive sheet.

2 shows a control mechanism arranged in the gear box 12 (FIG. 4) on the right side of the device of the three clutches 60, 52 and 82 are in the middle of a single one Electromagnet E

To engage the one-turn clutches 60 and 82, reverse To connect their driving parts with their driven parts, each must be mounted on the fixed axles 103 and 104 Lever 101 or «102 are rotated counterclockwise against the action of a spring 105 or β 106 to to temporarily disengage the projections 130 and 131 with these levers ".

The clutch 52, which is constantly closed when an on a stationary axis 108 pivotable lever 107 in Pig «2 assumes the position shown can be opened by pivoting the lever 107 clockwise«.

When the movable core 138 of the ElfUromagnei en B is, the lever 109 rotates about a fixed axis 110, so

909007/0766 ^^ ./.

that one to one. Arm 113 fixed and sliding pin 111 reaching into a slot 112 " The slot is provided in the lever 109

If a crank 114 rotates clockwise about a fixed axis 121 , a plate 115 is rotated counter to the bank about a fixed axis 108, so that the lever 116 must turn clockwise about a fixed axis 117 the arm 113 hinged to the lever 116 is moved to the right from the position shown in FIG. 2 until the pin 111 has reached the right end of the slot 112 ·

The crank 114 is operated by the mentioned button for "copy paper roll" or "copy paper stack ¹¹ " in such a way "that the position of the crank 114- in Pig · 2 ^{corresponds to the setting" copy paper stack 11 of} the button "during the 45 ° clockwise rotated position of the crank 114 corresponds to the "copy paper roll" setting of the selector knob · In the "copy paper stack ^H position, the crank 114 holds the lever out of engagement with the clutch 52 by means of a pin 128 so that this clutch remains closed while the lever 107 in the copy paper rolls ^w "position can move freely and is normally held by a Teder 129 in a position such that it keeps open the clutch 52"

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Bnr IsIwX 167 iat through tin · sit a slot 126 »in the • Can slide in the pin 127 attached to the lever 109, it cannot be connected to the lever 109 the crank 114 is in position "copy paper roll", throw the control of the clutch 52 to the electromagnetic Π

Ha on the irx 113 articulated and το η a spring 119 against • A stop 120, which is pressed “on the arm 113”, of the pressed Sohw “nk ~ arm 11β can pivot the levers 101 and 102, the Control the clutch · »60 and 82 · It means when you see the crank 114 in the position" copy paper stack "according to fig · 2 »• finds» the excited electromagnet E causes the rotation of the lever 109 in the * egenukraeigereinn from the rest position in the fig * 2 in a working position «) whereby the swivel arm 118 csgsn pushed the pin 123 of the lever 101 we * and this rotates in such a way that the coupling 60 is closed »by turning the arm 118 it loosens it just to the lever 101, so that this under the action of the spring 105 in his Return to the starting position and with the gate 130 of the Clutch in engagement: can step it can be seen that the clutch 60 in this position of the crank 114 in the moment when the excitation of the electromagnet begins for • in · revolution g. «S« closed while the clutch 82 always open »remains.

This position of the crank 114 affects the excitation

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BAD OBiGiNAL

of the electromagnet em E also does not change the position of the lever 1Ö7 * because the pin 12? In the slot 126, the rod 125 moves so that the coupling 52 remains closed. If, on the other hand, the crank 114 is in the position "copy paper roll ¹ ", in which the arm 113 is moved to the right *, the Arm 118 moved away from the lever 101 and brought into contact with the pin 122 of the lever 102 with its right edge. The rod 125 is pulled near the bottom by the spring 129, whereby the upper end of the slot 126 abuts the pin 127. Under these conditions, the excitation of the electromagnet th S does not affect the position of the levers 101 and 102 »but the arm 118 is adjusted» to close the coupling 82 »when the lower end of the arm 118 is brought into engagement with the pin 122» Furthermore, when the magnet S is excited, the rod 125 causes the lever 107 to rotate clockwise, whereby the clutch 52 is closed The action of the peder 124 in a clockwise direction »whereby the era 118 is pushed downwards and the lever 102 ao rotates» that it closes the coupling 82 » in this case too, the advancing arm 118 then comes out of single grip with the pin 122 of the lever 102 »So that it can return to its resting position under the action of the spring 106 and engage with the projection 131 of the coupling 82 Ib

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Excitation of the electromagnet E for the closing of the clutch 82 is set, which then only becomes effective at the moment is closed when the electromagnet E is de-energized.In addition, the clutch 52 remains closed only as long as how the electromagnet E is excited while the clutch is never closed »

Sis hinged to the plate 115 arm 132 carries on his

left end an electric controlled by a lever 133

see switch MSC * (|

In the document lighting path (fig 1) there are two sensors 151 and 152 arranged each sensor has a lever located with one end in the document path, which, when a document passes underneath, it is rotated counterclockwise and connected to an arm 153 or 154 moving the handle control lever 133

One end of the lever 133 is either on one end of the Arm 153, as shown in fig 2, or on a ' End of arm 154t de after whether sioh arm 132 in

its left or right position, i.e. whether the

Crank 114 is set to "bow" or "roll" · Thus, the MSC switch either through sensor 151 or

controlled by the sensor 152 "

The electrical circuit of the device includes (fig · 3) the Sohriftstüok lighting lamp L, which is through the contact E3

909807/0755

WHEEL ORIGINAL ./ »

of a relay R between lines 201 and 202 closed can be, the melting lamp F, the motor M and an electrostatic Charging circuit OE, which is connected by another contact R4 of relay R between lines 201 and 202 can be closed «The circle also contains the electromagnet E, which is placed between them via the switch MSC Lines can be closed, either under the control effect of the sensor 151 or the Pühlere 152, and it contains the fan V, which is constantly closed between these lines 201 and 202

The relay K has a contact R1 to control a hold circuit for the relay and a contact R2 to control a tent circuit T, which opens a contact 71 after a certain period of time, which interrupts the hold circuit »

The one controlled by the swinging upper table 1 of the derate Switch XgP can switch the relay E irritate·

The lines 201 and 202 can be connected to the power grid via a normal switch I * In? Ig · 3 are all contacts shown in their rest position *

The charging circuit CS has a transformer 203, the one Rectifier unit feeds diodes 204 and 205 as well

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^; 'BADORIGJNAL

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Kttiiessaterem 207 and 206 has »um on wires 86 and §9 an ununtefrbreahenes hoahpositives or · Jhoohnegati-τββ lot entIaI aufreehtauerkalten »

With reference to fl. 5 «oll, you can now define the working method of the 6device »are described · They are roped by strong lines lead rooms »in those of the 3ohalter MBP, the relay H, the Lattpem I and J, ier motor M, the charging circuit ClS and the hectromagmet B energized »sw * with Xaergy τ he takes care of and the 52 »60 and 82 are closed *

Ri is to be assumed (fig · 5a) »that the gate selector button has been set to ** copy paper roll ^H , so that« the drive rollers 73 and 74- ** t of the motor roller engage »the switch MSO is brewed in its right position "To be controlled by the sensor 152" and the lever 107 (fig * 2} by means of the spring 129 la is brewed a position "in which it keeps the clutch 52 closed.

If the normal switch I is closed, the fan T starts up *

The sohriftstüok, which is to be multiplied, is placed on the upper one Table 1 is placed »so that it rests against the edge guide 3, and it is then pushed into the singing opening 2 · The iurom exercised the band on the swinging table 1

909807/0755 _# /.

Pressure causes the MSP switch to be actuated briefly. This energizes the relay R and the holding contact R1 as well as the contacts R2, R3 and E4 are calibrated, which means that the lamp L *, the Sohmel lamp Ϊ, the Hadekrela OE and the motor K with This causes the drive rollers 5, 9t 10 * 89 »93 and 93, the driven parts of the clutches 60, 52 and 82 and the rotating parts of the development station 40 to rotate continuously ·

Thus, the document is inserted between the Rolls 4 and 5 moved over the leleuehtungabahn, and at Reaching the sensor 152, it actuates the switch MSC to to excite the electromagnet E, which then excites so long remains, like the document, in contact with this feeler stands·

By turning the lever 109 (FIG. 2), the electromagnet E lifts the rod 125 and the lever 107 in a clockwise direction the action of the spring 129 is twisted, thereby closing the coupling 52. The roller 49 then starts moving and rotates rollers 73 and 74 so that photosensitive paper 42 moves from paper roll 44 to loading station 39 and from there is conveyed to the exposure station 35 »The exposure station 35 is from the leading edge of the copy sheet in the Moment reached »when the door edge of the document to be reproduced also reaches the lighting station 29 *

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When the trailing edge of the document reaches the sensor 152, the switch MSC returns to its raised position shown in FIG.

The electromagnet E then becomes de-energized, so that the lever 109 (FIG. 2) is released and, under the action of the triple element 124, can pivot clockwise into its rest position Engagement is, down, and the lever 102 is rotated so that it achliesat the coupling 82 for a single revolution. This coupling actuates the blade 79, so that a sheet of exactly the same length as the stick tape from the paper roll 44 is cut off. When the electromagnet is de-energized, the lever 107 (Yig * 2) can also turn counterclockwise under the action of the spring 129 and open the clutch 52, whereby the 49t 73 and 74 are to be stopped If the rollers 89, 91 and 93 continue to rotate and the sheet of paper continues to be requested, while the balls 5, 9 and 10 continue to rotate, the guide device 30 is set to the multi-copier feed RDET to lead · 1 * aweiteβ times over the Beleuohtungsbahn, or daa Schriftβtück on the shelf 31 to deliver when the guide iat been set at 30 linfaefakopierbetries "

More precisely, the IGBC switch reads when it is

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When the trailing edge of the document returns to its idle position under the sensor 152, start the timer T, which opens contact T1 after a certain period of time in order to interrupt the holding circuit of relay R. When relay R is de-energized, the energy supply is interrupted to the lamps L and F and the charging circuit CE "Even the motor M is energized, so that all feed rollers for the paper stop · the duration of the period to which the timer T is set is selected so that the copy sheet his Run through the development station 40 and through the fusing station 41 then the copy sheet is delivered to the upper table 1

It should now be assumed that the gate selector button is on "Copy paper stack" has been set (Fig. 5fe), whereby the rollers 73 and 74 are removed from the roller 49 and the clutch 52 is continuously closed because the lever 107 through the pin 128 disengages this clutch is held "as shown in FIG. 2" and as a result of which the switch MSO is brought into its left position controlled by the sensor 151

When the switch X is set up, the operator inserts the document into the machine and, by depressing the upper table 1, actuates the switch MSP, so that the relay R «is excited, whereby the lamps L and F _{9 are energized}

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BATH ORIGINAL

is fed to the charging circuit CE and the motor M »Then begin Hollen 5, 9, 10, 89, 91 and 93 as previously described case to turn "Since the clutch 52 is permanently closed" also causes the Bolle 49 turns »

When the leading edge of the document "reaches feeler 152" the electromagnet B is energized via the switch MSC by the lever 109 (FIG. 2) in a counterclockwise direction rotate »which moves the arm 118 upwardly around the; Lever, 101 for closing the clutch 60 upwards to stoasen · The clutch 60 makes one turn while which traverses the sheet feed roll 53 a single and complete work-path to get the top sheet off the stack 46 1 ». To bring engagement with the pair of rollers 49 and 50 »

The sensor "151 * which is in the ^M paper stack" position of the preselection button in its working position "reads aiifMle * document path in front of the sensor 152, which is in the above-described ^H copy paper roll" position of the preselection button in its working position by a length equal to the time it takes for the leading edge of the top sheet of stack 46 to move the blade 79? Reach ml "Therefore, the leading edge reaches the sheet from the stack 46 the blade 79 in the moment when the leading edge of SehriftStücks the sensor 152, the iet now inactive>% rreiiolrfc" d © h "in the moment when the leading edge

909807/0756 ./.

of the Bogena fed from the roll 44 would begin to move to move to the right from the son's oath 79 "It is thus evident that the use of two in certain Sensors arranged at a distance from one another ensure that the movements of the document are precisely synchronized and the copy sheet in any case »

The copy sheet first comes into engagement with the roller pair 73 and 74 and then with the roller pairs 89 and 90, 91 and 92, 93 and 94 »which one after the other through the loading station 39» the straightening station 35 »the development station 40 and convey the fixing station 41 to then place it on the Table 1 to be delivered »

When the trailing edge of the document reaches feeler 151 » In this case too, the switch MSC causes the interruption of the when it reaches its rest position again Energy supply to the electromagnet E and the start-up of the timer T »The timer T works as described above and causes the power supply for the lamps L to be maintained via the hold circuit of the relay R and F, the charging circuit CE and the motor M, for a predetermined period of time after the de-energizing Electromagnet E »

Since the energy loss in this case is the clutches 60, 52 and 82 (Fig. 2) is not affected, the rotary motion

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the rolls, 9, 10, 89, 91 »93 and 49 are not interrupted, so that the copy sheet can end its path as required

Patent claims:

Ga / Hf - 16,724

909807/075 5

Claims (1)

Patent claims: 1 · Photocopier, especially electrophotographic Copier, for the reproduction of an original guided along an illumination path on an exposure path Depending on the type of introduction, copy sheets covering different distances, characterized in that that the movement of the copy sheet over the exposure path is always synchronous with that of the original via the lighting path in that a sensor (151 * 152) controlled device by a two-position selector in its first position in such a position it is adjustable that when the front edge of the original is felt, a copy sheet of the one inside the device arranged supply »stack (46) can be removed while the device is in its second position by the selector can be set in such a position that when the front edge of the original is felt, the copy sheet can be introduced into the exposure path by the roller (44), which is also arranged within the device, and at 909807/0755 Meile documents (Art. 7 & 1, Paragraph 2, No. 1, Clause 3 of the Andenrngsgel.2.4.9.1967) BATH ORIGINAL Feeling the trailing edge of the original cut from the ball is, the sensors (151 »152) arranged in the lighting path at a distance from one another are the difference between the different, from the copy sheet when removing from the stack (46) or from the should (44) to be covered before its introduction into the Beliohtungsbahn Path length corresponds to » 2 · device Bach claim 1 with one at one revolution Coupling which is engaged only once for receiving the copy sheet from the copy sheet supply stack, ™ a second clutch, which is engaged only once in one revolution, for cutting off the arc von der Bolle and with an electromagnet »that long remains excited »how the original is in contact with the activated feeler» characterized by »that a first Ars (1O9) »the one caused by the excited electromagnet (E) can be pivoted from a working position to a boating position »a second arm (113) carries» the one under the Control of the two-position selector (114) adjusted between two positions corresponding to J in the first arm (109) can be »with the second arm (113) in the first position of the error (114) the first clutch (60) can slip »when the first arm (109) out of the Buheatstellung goes into the working position, while in the second position of the selector (114) the second clutch (82) sole can be closed »when the first arm (109) goes from the working position to the booing position · 909807/0755 INSPECTED ./ 3β device according to claim 2 with a constantly engaged Coupling for the sheet feed, characterized in that a rod (125) is provided which controlled by the selector (114) to either disengage and thereby disengage the first arm (109) the clutch (52), which is always in engagement, must be kept closed, or in order to keep it closed Arm to engage, thereby controlling the constantly engaged clutch on the electromagnet (E) passes » Device according to one of the preceding claims, in particular electrophotographic copier, with a device for electrostatically charging the copy sheet, a developing device, a fixing device, an original lighting device, an original gate feeder and a copy sheet feeder, Eand's original being placed on a table in order to be introduced into the lighting path to be characterized »that the table (1) can be swiveled by manual pressure * around an electric one Switch (MSP) to operate, and thus the charging » (39) developing (40), fixing (41), lighting (I, F) and feed devices (5, 9, 10, 49 »89 * 91, 93) to supply energy, the feed devices only via a timer (5C) by the actuated The feeler (151) can be de-energized when it feels the trailing edge of the original » 90 980 7/0 7 55 .A ORIGINAL INSPECTED 5 »device according to claim 4» characterized in that the Table (1) is the top plate of the machine cover, the copy sheet on the table, and the original on one Plate (31) is delivered, which is arranged under the table and parallel to it » 6ο Device according to the preceding claims, characterized * shows that the paper roll (44) is carried by a carriage (64 »65) which is laterally parallel from the device can be pulled out to the roller axis * 7ο device according to the preceding claims, characterized in that that the copy sheet supply stack is a pull-out box Ga / Sf - 16,724 909807/0755