EP0466712B1 - Chargeur de papier pour la station de duplication d'une imprimante electrophotographique - Google Patents

Chargeur de papier pour la station de duplication d'une imprimante electrophotographique Download PDF

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Publication number
EP0466712B1
EP0466712B1 EP90904348A EP90904348A EP0466712B1 EP 0466712 B1 EP0466712 B1 EP 0466712B1 EP 90904348 A EP90904348 A EP 90904348A EP 90904348 A EP90904348 A EP 90904348A EP 0466712 B1 EP0466712 B1 EP 0466712B1
Authority
EP
European Patent Office
Prior art keywords
paper
transfer station
brake
transport
feed device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90904348A
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German (de)
English (en)
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EP0466712A1 (fr
Inventor
Peter Rumpel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Production Printing Germany GmbH and Co KG
Original Assignee
Wincor Nixdorf International GmbH
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Publication of EP0466712A1 publication Critical patent/EP0466712A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/18—Web break detection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
    • B41J15/06—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles characterised by being applied to printers having stationary carriages

Definitions

  • the invention relates to a paper threading device according to the features of claim 1.
  • Printing devices with latent character image generation as e.g. Laser printers with LED combs, printing devices or magnetic printers are generally known and have been used successfully.
  • a latent character image is created with the aid of a laser or with the aid of magnetic recording media on a photoconductor drum or a magneto-sensitive drum, which is developed by applying toner in a developer station and then in the subsequent transfer printing station onto a tape-shaped recording medium in the form of a perforated edge provided continuous paper is transferred.
  • the image consisting of toner, which is loosely on the continuous paper, is fixed with the aid of a fixing device and then placed on a paper storage surface by means of an automatic paper stacker.
  • Such rapid printing devices with latent character image generation are operated together with EDP systems and operated and serviced by the same operating personnel. For this reason, the printing devices must be designed so that an almost uninterrupted printing operation is guaranteed. After a stack of paper has been consumed, it must therefore be possible to insert a new stack of paper very quickly without a substantial interruption time. Such printing devices must therefore be ergonomically optimal, this applies in particular to the insertion and removal of the paper and to the maintenance of the overall system.
  • the transfer printing station is usually removed from the intermediate carrier e.g. swung out a photoconductor drum and manually inserted the paper into the printing device.
  • the paper guide in the area of the transfer printing station and there in the area of the transfer printing point is particularly problematic. It must be ensured that the paper is taut and without play around the transfer station during printing. Fluttering of the paper in the area of the transfer printing point leads to malfunctions in the transfer printing process and thus to a deterioration of the typeface, e.g. in the form of wiping pressure or the like.
  • the paper transport device at the transfer printing station must be designed in such a way that a synchronous running of the paper with the photoconductor drum is ensured.
  • Tractors of this type generally consist of a tractor belt with tractor flaps arranged above it, which press the paper against the tractor belt. While the paper tractors on the output side are generally easily accessible, depending on the type, operating the tractor flap on the input side is difficult.
  • the object of the invention is to provide a paper threading device for continuous paper provided with edge perforations in the transport elements of a transfer printing station of a printing device with latent character image generation, which enables the continuous paper to be clamped and threaded easily and accurately.
  • the threading should run as automatically as possible.
  • a paper brake to be actuated during the threading process is arranged in the paper transport direction in front of the transport elements on the input side.
  • the continuous paper is first hooked into the output-side paper tractors, which are easily accessible from above, and then the continuous paper is guided through the paper brake.
  • a switching device activates the tractors on the output side when the paper brake is applied.
  • the paper is crawled.
  • the continuous paper is simply pitched into the transport nipple of the input side tractor belts, automatically ensuring that the paper is guided tightly around the transfer station.
  • the transport flaps on the input side are automatically closed and the paper brake released.
  • the transfer printing station is coupled to an actuating rocker which can be pivoted between an operating position and an insertion position, in which case, in a pivoted-down position, correspondingly coupled paper guide elements form an expanded paper guide channel for inserting or removing the continuous paper into the transfer printing station.
  • the paper brake is advantageously divided into two, a deflection element being arranged stationary in the paper channel and a corresponding counter element on the actuating rocker.
  • a printing device operating on the principle of electrophotography has a supply table 10 for receiving a supply stack 11 made of pre-folded continuous paper 12.
  • the continuous paper is a paper splitter 13 and a provided with paper guide elements, pivotable actuating rocker 14 fed to the actual electrophotographic printing unit 15.
  • This printing unit 15 has a transfer printing station 17 which can be swiveled in and out of a photoconductor drum 16, as well as devices which are arranged around the photoconductor drum 16 and are necessary for the electrophotographic process.
  • the photoconductor drum 16 charged with the aid of a charging device 18 is discharged in a customary manner via an LED character generator 19, and the charge image thus generated is colored in a developer station 20 with a developer mixture of toner and carrier particles.
  • the toner image is then transferred to the continuous paper 12 in the transfer printing station 17.
  • the photoconductor drum 16 is unloaded via an unloading station 21 and cleaned in a cleaning station 22 and recharged via the charging device 18.
  • the toner image on the continuous paper 12 e.g. to use an electrostatic process or a magnetic process or even an ink comb that applies ink directly to the continuous paper.
  • the paper web 12 provided with a toner image is then fixed chemically or by heat in a fixing station 23 and placed on a deposit table 24.
  • the storage table 24 is designed so that it can be swung out via a pivoting lever 25 to facilitate the removal of the printed paper stack 26.
  • the paper web 12 can also be fed directly to the paper dividing device 13 via external paper feed channels 27. Furthermore, it is possible to use an external endless supply stack 28 as a supply stack. For feeding the paper web may require separate paper feed elements with paper rollers 29.
  • a particle trap 30/1, 30/2 is arranged either at the entrance area to the transfer printing station 17 or in the transfer printing station.
  • the printing device also has a paper loading device which can be activated via the actuating rocker 14 and has an associated paper brake 31.
  • a paper dividing device 13 is arranged at the entrance of the feed channel to the printing unit 15 above the paper stack 11.
  • This paper divider device contains a first deflection element in the form of a rotatably mounted paper roller 32, which is arranged between two side parts 33 of the actuating rocker 14 at its free pivoting end. Furthermore, it contains a second deflection element in the form of a motor-driven paper roller 34 which is arranged in a stationary manner on two fixed support elements 35 connected to the housing of the printing device.
  • the motor-driven paper roller 34 is located in the swivel range of the actuating rocker 14.
  • a paper guide element 36 is arranged at a distance forming a passage for the paper web.
  • the paper guide element is designed such that it forms, together with other sheet metal elements, a collecting basket 38 for the first peeled-off folder of the paper web.
  • the continuous paper web 12 is first guided in a first deflection direction over the first deflection element 32.
  • a first paper layer 37 adhering to the outside of the paper web with respect to the paper roller 32 is peeled off with its folded edge from the paper guide element 36 and penetrates into the collecting basket 38.
  • the first paper layer 37 is fanned out during further transport.
  • a second paper layer adhering to the inside of the paper roller 32 is guided by the paper web 12 around the paper roller 32 with the first deflection direction and then detaches from the second deflection element (paper roller 34) by the deflection and falls downward. This also leads to a fanning out of the paper layer, so that an expanded continuous paper web 12 is available for further transport via a paper guide element 40 arranged between the side parts 33 of the actuating rocker 17.
  • the actuating rocker 14 not only forms part of a paper dividing device 13 but is an essential functional element of a paper insertion device for inserting the continuous paper 12 into the printing device.
  • the actuating rocker 14 is mechanically coupled to the transfer station 17 in such a way that when the actuating rocker 14 is pivoted from a loading position A to an operating position B, the transfer station 17 pivots on the photoconductor drum 16 or when pivoting from position B in the position A swings down.
  • the actuating rocker 14 is rotatably mounted in the area of the transfer printing station on an axis 41 fixed to the frame via holding elements 42.
  • the transfer printing station itself is likewise pivotably mounted on the axis 41 fixed to the frame by means of a cast support 43, which is only shown schematically here.
  • the transfer printing station contains a tractor drive with two tractor belts 44 which laterally engage in the perforations of the continuous paper 12 with transport nipples 45 arranged thereon.
  • the tractor belts 44 are guided and mounted on two pairs of drive wheels connected to one another by axles 46, the tractors being driven by a motor M (FIG. 2) which is coupled to the large pair of drive wheels.
  • the continuous paper 12 When the continuous paper 12 is transported, the continuous paper is in engagement with the tractor belts 44 via its perforation holes 9 in the transport direction of the paper, both before 47 and after 48, the transfer area 49 of the transfer station.
  • Four transport flaps 50 are provided as securing and guiding elements for the continuous paper , which press the continuous paper in the area of the perforation holes 9 against the tractor belts 44.
  • the transfer printing station 17 is moved via a driver 51 which is arranged in the bearing area of the actuating rocker 14 and which interacts with a stop pin 52 on the cast support 43 (frame) of the transfer printing station 17.
  • a driver 51 which is arranged in the bearing area of the actuating rocker 14 and which interacts with a stop pin 52 on the cast support 43 (frame) of the transfer printing station 17.
  • Attached to the cast support 43 is a sleeve 53 with a spring 54 contained therein and a spring pin 55 guided in the sleeve 53.
  • the spring pin 55 rests with its head 56 on a stop 57 fixed to the frame and rolls on the transfer station when the transfer station moves.
  • the transfer station is thus pivoted on and off with or against the spring force of the spring 54.
  • the spring pin 55 When pivoting the actuating rocker 14 from position B to position A, the spring pin 55 supports the pivoting movement of the transfer station, the stop pin 52 being up to a certain pivot angle on Driver 51 is present.
  • the swivel angle of the transfer station is limited by the length of the spring bolt 55 with a stop arranged thereon.
  • the transfer station 17 is mounted with respect to its pivot point in such a way that the paper guided in the transfer region 49 via the transfer station 17 immediately lifts off the photoconductor drum without grinding there.
  • pivotable paper guide elements 58 and 59 are arranged in the area of the transfer printing station.
  • the paper guide element 58 is articulated via a toggle lever 60 to a guide piece 61 mounted on the actuating rocker 14, one end of the paper guide element 58 being guided in a rail 63 fixed to the frame via a slide pin 62.
  • the paper guide element 59 arranged downstream of the transfer printing area 49 is in turn pivotally mounted on the frame via a bearing 64.
  • a bearing 64 In the area of the bearing 64, it has a spring 65 which presses the paper guide element 59 into the closed position B shown.
  • the paper guide element 59 is connected to an extension piece 66 which interacts with the sliding pin 62.
  • the sliding pin 62 is located in the swivel range of the extension 66 and presses the paper guide plate 59 in position A outwards.
  • the paper guide element 59 is supported on a knob of the transfer printing station 17 under the action of the spring 65 and is pivoted away via these knobs.
  • the transfer printing station 17 is pivoted to the photoconductor 16 and the paper guide elements 58 and 59 release the transfer printing area 49.
  • the actuating rocker 14 is pivoted into position A, the paper guide plate 58 is guided on the rail 63 into the area between the photoconductor drum and transfer printing station, and an expanded paper guide channel 67 opens between transfer printing station 17 and paper element 58.
  • the paper guide element 58 protects the photoconductor drum 16 in the process Transfer area 49 before light entry and damage.
  • the paper guide channel 67 is continued in the paper transport direction by the pivoted paper guide element 59, the paper guide elements 58, 59 partially overlapping.
  • a paper insertion plate 68 is fixedly arranged with the a round paper guide area 69 of the actuating rocker 14 interacts.
  • the paper guide area 69 serves as a paper deflection element for the paper web.
  • a paper brake 31 (FIG. 1) is arranged in the inlet area of the paper guide channel for the transfer printing station 17.
  • This paper brake contains a deflection element 70 in the form of a sheet metal rib, which is attached to the transfer station 17 at the entrance of the transfer printing station and is part of a continuous deflection plate 71.
  • the deflection element 70 interacts with a counter element 72 which can be swiveled in and out and which is arranged in the paper guide area 69 on the actuating rocker 14.
  • the counter element 72 has a brake lug 73 and a stop pin 74 which cooperates with an actuating lever 75 mounted on the transfer station 17.
  • the actuating lever 75 in turn is coupled via a recess 76 to a pin 77 which interacts via a gear 78 with a shift lever 79 for closing the tractor flaps 50 of the feed area of the transfer station.
  • the shift lever 79 is further coupled to the tractor flaps 50 via the gear 78 and corresponding latching noses, not shown here.
  • the tractor flaps 50 rest on the paper web under the action of pressure springs (not shown here) arranged in the hinge region of the tractor flaps. If they are pivoted away, this takes place against the action of these pressure springs, the tractor flaps 50 remaining in the open state after overcoming a dead center of the springs.
  • the shift lever 79 When the tractor flap 50 is open, the shift lever 79 is in the position 79/1.
  • the actuating lever 75 is in the pivoted-out position via the pin 77 and presses the counter element 72 with the brake lug 73 into the operating position.
  • the operating rocker 14 is in position B, i.e. in a raised position.
  • the paper brake is thus activated and the continuous paper 12 is deflected between the brake lug 73 and the sheet metal rib and is thereby braked.
  • the brake lug 73 is part of the counter element 72, which consists of a profile piece extending over the width of the continuous paper 12.
  • the shift lever 79 is brought into position 79/2, as a result of which the flaps 50 pivot via the gear 78 over the dead center of their springs and the springs close the flaps.
  • the actuating lever 75 is pivoted back via the pin 77 and under the action of a spring 80 arranged at the pivot point of the counter element 72, the counter element 72 pivots back with the brake lug 73 and disengages from the continuous paper 12 and releases it.
  • the continuous paper 12 can now be freely guided through the paper brake 31 in printing operation without braking action.
  • the entire paper loading device works as follows:
  • the actuating rocker 14 is pivoted into the position A via a handle 81.
  • This position A is sensed via a switch 82 (FIG. 2).
  • the transfer printing station 17 is pivoted away and the paper guide elements 58 and 59 cover the photoconductor drum 16 and open a wide paper insertion channel 67.
  • the paper can be fed through the printing station via this paper insertion channel and hooked into the tractor belts 48 on the output side.
  • the transport flaps 50 of the tractor belts 48 on the output side are then closed. If the transport flaps 50 of the tractor belts 47 arranged in the paper inlet area of the transfer station 17 are closed, they are opened. This is the shift lever of the Flap actuation 79 in position 79/2.
  • the actuating lever 75 of the paper brake is swung out. This position is shown in FIG 10.
  • the continuous paper 12 In order to be able to thread the transport nipple 45 of the tractor belts 47 in the correct position in front of the transfer station 17, the continuous paper 12 must be centered in width before the loading rocker 14 is closed. This means that the paper web 12 must be aligned on the actuating rocker 14 so that the perforation holes 9 of the continuous paper 12 are aligned with the tractor belts 47 on the input side. This is by no means a matter of course, since, depending on the position of the stack 11, the paper web 12 can lie too far forward or too far back on the supply table. In order to achieve this centering, a centering device is arranged in the entrance area of the transfer printing station.
  • a sheet-metal tab 8 which is coupled to the input-side tractor drive 47 and can be moved in width. This serves as a centering funnel for the continuous paper when viewed in the transport direction of the continuous paper 12 and can be adapted to the width of the continuous paper 12 together with the tractor drive 47. Furthermore, a fixed right guide stop 7 for the continuous paper 12 is arranged on the deflection region 69 of the fastening rocker 14.
  • the creeping gear operation of the continuous paper 12 is initially roughly centered via the right front stop 7.
  • the paper web comes into the catching area of the rear centering, namely the catching area of the sheet metal tab 8.
  • the continuous paper web 12 is centered between the front fixed stop 7 and the rear stop 8, so that the perforation holes 9 are aligned with the tractor belts 47.
  • a timer which e.g. can be arranged in the printer controller C, D, the tractor drive is activated in the creeper gear.
  • This timer can e.g. be designed as a counter.
  • the tractor belts 44 on the output side now pull the continuous paper against the action of the paper brake 31 until it is taut around the transfer station 17.
  • the transport nipples 45 of the tractor belts 47 arranged on the input side come into engagement with the perforation perforations 9 of the continuous paper 12.
  • the transport flaps 50 are closed via the shift lever 79.
  • the paper brake 81 is deactivated in the manner described and the continuous paper 12 is released. The paper is thus completely inserted in the transfer printing area and can now be automatically threaded through further transport to the fixing station 73 or to the storage table 24.
  • the switching lever 79 is actuated by means of a rotary magnet.
  • This rotary magnet can be arranged in the area of the transmission 78 and is connected to the control of the printing device and to the switches 82.
  • the rotary magnet can be switched so that it automatically closes the transport flaps 50 when the paper web 12 is threaded in after the creep phase has ended.
  • the insertion device is opened in the reverse order when the paper web is inserted.
  • the shift lever 79 is brought into the flap position on 79/2 and the paper brake 31 is thereby activated.
  • the transport flaps 50 arranged in the entrance area of the transfer printing station 17 are opened and the actuating rocker 14 is pivoted away via the handle 81 after the lock has been released. This opens the paper guide channel 67, the transfer printing station is pivoted away and the transport flaps 50 arranged in the outlet area of the transfer printing station can be opened.
  • This sequence can also be automated by the arrangement of a rotary magnet, the locking of the transport flaps 50 being released and the paper brake 31 being activated when the printer is stopped. Then the transport flaps 50 arranged in the entrance area 47 of the transfer station 17 are opened, the actuating rocker 14 is pivoted away and the transport flaps 50 arranged in the exit area 48 transfer station 50 are opened.
  • the braking effect is automatically adjusted by the paper thickness of the continuous paper 12 used.
  • the braking force must not be too great, for example, to avoid tearing or stretching the paper. Due to the reduced paper thickness, the paper in the paper brake is deflected less and therefore experiences less braking force. Thicker paper is redirected more and is therefore slowed down more.
  • the braking force of a paper brake provided with deflection elements depends strongly on the deflection radius on the deflection element 70 and on the counter element 72 and can be adjusted via the radii.
  • the basic dimensions of the paper brake depend, among other things, on the type of record carrier used and the type of transport and drive in the transfer station.
  • a round metal rod 84 is guided in slots 85 of a holder via a paper saddle of the actuating rocker 14 shortly before the deflection region 69.
  • the holder consists of a cross bar 87 which is fastened to the housing of the printing device with lateral retaining tabs 86.
  • the metal bar 84 in turn has two lateral round guide areas 88 with a large diameter and a catch area 89 with a smaller diameter extending across the paper web. This results in a passage slot for the paper 12 between the paper saddle 83 and the crossbar 87 in the catching area 89.
  • This tearing of the paper web 12 is detected using appropriate detectors e.g. in the form of a light barrier 90 arranged in the deflection area 69 and the paper transport stopped.
  • the crossbar 87 can be moved upwards in the slots 85 of the side holder 86.
  • the holder 86 with the slots 85 is arranged over the crossbar 87 at such an angle to the paper web that the wedge effect is assisted in the penetration of metal particles. This means that the metal piece to be intercepted wedges with subsequent paper tear, but on the other hand it is ensured that the metal piece can be removed again easily by lifting the metal rod 84.
  • the particle trap is arranged on the transfer printing station 17 between the paper tractors 47, 48 on the input and output sides in front of the transfer point 49 in the paper transport direction. This prevents the paper from jamming in the passage slot of the particle trap when the paper is moving in both the forward and backward directions, since the paper is always clamped between the tractor belts 47 and 48.
  • the particle trap itself contains a deflection profile 91 which is arranged in the paper channel of the transfer printing station and which extends over the width of the transfer printing station 17 and on which the continuous paper with its unstressed rear side slides.
  • Spacer plates 92 are fastened to the deflection profile 91 at the lateral ends. This results in a structure for the deflection profile 91, which corresponds to the metal rod 84 including the guide areas 88 of the exemplary embodiment in FIG.
  • a particle bar 94 in the form of a metal rod can be pivoted onto the deflection profile via a lever 93, the particle bar 94 on the spacer plates in the pivoted-in state 92 rests and forms a passage slot 95 (calibration gap) between the deflection profile 91 with continuous paper 12 guided thereon for trapping the particles.
  • the calibration gap 95 is funnel-shaped in the inlet area of the paper. This ensures that the pieces of metal to be caught are wedged with the following paper.
  • the lever 93 is mounted on a pedestal 96 for the pivot bearing 41 of the actuating rocker 14 and can be pivoted about a pivot point 97. Furthermore, it has a latching device 98, which makes it possible to latch the lever 93 in two positions. These locking positions are scanned via a microswitch 99. These locking positions are: a first position (position 1), in which the particle bar 94 is pivoted to the deflection profile 91 and thus the particle trap is closed, and a second position (position 2), in which the particle bar 94 is pivoted away from the deflection profile 91.
  • the pivoted-off position 2 is necessary if the printing device is to be used to print on labels arranged on the continuous paper 12, which reinforce the paper significantly. If the particle trap were not swung away, the labels would jam in the paper slot.
  • the positions of the lever 93 are recognized by a microswitch 99 and transmitted to the device control of the printing device. The device control monitors the functional states of the partial trap.
  • the transfer printing station 17 is in the operating position, i.e. it is pivoted to the photoconductor drum 16 and the actuating rocker 14 is locked.
  • the transfer printing station is activated according to FIG. 9 via the actuating rocker 14 17 pivoted away, thereby the paper guide element 58 swings into the paper transport channel and protects the photoconductor drum 16. Particles falling from the calibration gap cannot damage the photoconductor drum 16.
  • the entire control of the threading process and the monitoring of the individual elements of the paper insertion device is carried out via a conventional microprocessor-controlled measurement monitoring device D (FIG. 2).
  • This monitoring device D detects the switching states of the switches 82, a light barrier 90 and controls the drive motors M of the transfer station 17.
  • the monitoring device D is part of the device control C, which can be designed, for example, in accordance with US Pat. No. 4,593,407.

Landscapes

  • Handling Of Sheets (AREA)
  • Advancing Webs (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

Chargeur de papier pour charger du papier continu (12) à perforations marginales dans les éléments de transport (44) de la station d'impression (17) d'une imprimante non mécanique. La station d'impression (17) comporte, du côté entrée et du côté sortie, dans le sens de déplacement du papier, des éléments de serrage pour le transport du papier (44), qui s'insèrent dans les perforations marginales du papier continu (12) et sont entraînés par un moteur; elle comporte également un frein de papier (31) à actionner en cas de besoin, et qui est agencé avant les éléments de transport (47) du côté entrée, dans le sens de transport. Pour que le papier continu (12) soit chargé de manière précise, en fonction des lignes de séparation, une fois placé dans les éléments de transport du papier (48) du côté sortie, on a prévu un mécanisme de man÷uvre (D, C) qui active les éléments de transport de papier (48) du côté sortie pendant un intervalle minimum de temps prédéterminé de chargement lorsque le frein de papier (31) a été actionné.

Claims (10)

  1. Dispositif pour enfiler un papier, notamment un papier sans fin (12) pourvu de perforations marginales, dans les éléments de transport (44) d'un poste de transfert (17) d'un dispositif d'impression comportant une unité de formation d'images latentes de caractères, présentant les caractéristiques suivantes :
    a) le poste de transfert (17) possède, dans la direction de transport d'un papier sans fin (12), des éléments (44,48) de transport du papier, qui sont entraînés par un moteur aussi bien côté entrée que côté sortie et s'engagent dans la perforation marginale du papier sans fin (12);
    b) un frein (31) de réglage de la tension du papier, qui peut le cas échéant être actionné, est disposé en amont des éléments de transport (47), situés côté entrée, dans la direction de transport du papier, et
    c) il est prévu un dispositif de commutation (D,C), qui, pour réaliser le serrage et l'introduction, d'une manière précise du point de vue séparation, du papier sans fin dans le poste de transfert (17) après insertion du papier sans fin (12) dans les éléments (48) de transport du papier, situés côté sortie, entraîne ces éléments lorsque le frein (31) de réglage de la tension du papier est activé, pendant la phase d'introduction.
  2. Dispositif pour enfiler un papier suivant la revendication 1, caractérisé par le fait que le poste de transfert (17) est agencé de manière à pouvoir être écarté et rapproché par basculement sur un support intermédiaire (16) et que le poste de transfert (17) est coupé à des éléments (58,69) de guidage du papier, qui, lorsque le poste de transfert (17) est dans la position écartée par pivotement, forment un canal élargi (67) de guidage du papier pour l'insertion et le prélèvement du papier sans fin (12).
  3. Dispositif pour enfiler un papier suivant l'une des revendications 1 ou 2, caractérisé par le fait que le poste de transfert (17) est couplé à une coulisse oscillante d'actionnement (14) pouvant pivoter entre une position de service (B) et une position d'insertion (A).
  4. Dispositif pour enfiler un papier suivant la revendication 3, caractérisé par le fait qu'il est prévu un dispositif d'exploration (42), qui détecte la position de la coulisse oscillante d'actionnement (14) et est couplée au dispositif de commutation (D,C) et que le poste de transfert (17) possède un dispositif de couplage (75,77,78), au moyen duquel le frein (31) de réglage de la tension du papier peut être actionné.
  5. Dispositif pour enfiler un papier suivant l'une des revendications 1 à 4, caractérisé par le fait qu'il est prévu, comme éléments de transfert du papier, des tracteurs de papier (44) comportant des volets de transport (50), et que les tracteurs de papier (44) situés côté entrée sont couplés selon une liaison cinématique au frein (31) de réglage de la tension du papier de telle sorte que le frein (31) de réglage de la tension du papier est ouvert lorsque le volet de transport (50) est fermé.
  6. Dispositif pour enfiler un papier suivant l'une des revendications 1 à 5, caractérisé par le fait que le frein (31) de réglage de la tension du papier possède un élément de renvoi (70) disposé dans le canal de circulation du papier et un élément antagoniste (72) pouvant être rapproché et écarté par pivotement, auquel cas, lorsque le frein (31) de réglage de la tension du papier est dans l'état de service, la bande de papier (12) située entre ces éléments est déviée et est ainsi freinée.
  7. Dispositif pour enfilier un papier selon la revendication 6, caractérisé en ce que l'élément antagoniste (72), qui peut être rapproché et écarté par pivotement, est monté sur la coulisse oscillante (14).
  8. Dispositif pour enfiler un papier suivant la revendication 3, caractérisé par le fait que la coulisse oscillante (14) comporte des éléments (40,69) de guidage du papier, qui forment, conjointement avec d'autres éléments fixes (68,70) de guidage du papier, un canal de circulation pour le papier sans fin (12).
  9. Dispositif pour enfiler un papier suivant la revendication 3, caractérisé par le fait que la coulisse oscillante d'actionnement (14) possède un élément de préhension (81) auquel est associé un dispositif de verrouillage pour la position de service (position B).
  10. Dispositif pour enfiler un papier suivant l'une des revendications 1 à 9, caractérisé par le fait que dans la zone d'entrée du poste de transfert (17) est prévu un dispositif de centrage en largeur (8,7) pour le papier sans fin (12), qui aligne le papier sans fin (12) par sa perforation marginale (9) sur les éléments de transport (47) du poste de transfert (17).
EP90904348A 1989-04-05 1990-01-26 Chargeur de papier pour la station de duplication d'une imprimante electrophotographique Expired - Lifetime EP0466712B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP89105998 1989-04-05
EP89105998 1989-04-05

Publications (2)

Publication Number Publication Date
EP0466712A1 EP0466712A1 (fr) 1992-01-22
EP0466712B1 true EP0466712B1 (fr) 1993-05-19

Family

ID=8201180

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90904348A Expired - Lifetime EP0466712B1 (fr) 1989-04-05 1990-01-26 Chargeur de papier pour la station de duplication d'une imprimante electrophotographique

Country Status (4)

Country Link
US (1) US5350100A (fr)
EP (1) EP0466712B1 (fr)
JP (1) JPH04506637A (fr)
WO (1) WO1990011895A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002068548A (ja) * 2000-08-29 2002-03-08 Minolta Co Ltd 連続紙搬送装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2637402C3 (de) * 1976-08-19 1980-11-27 Nixdorf Computer Ag, 4790 Paderborn Einrichtung für den taktmäßigen Transport von Endlosformularen
US4173420A (en) * 1977-04-05 1979-11-06 Copal Company Limited Paper feeding mechanism in a printer
DE2717315C3 (de) * 1977-04-19 1980-05-29 Siemens Ag, 1000 Berlin Und 8000 Muenchen Aufzeichnungsträgertransportvorrichtung für einen randgelochten Aufzeichnungsträger
US4345708A (en) * 1980-05-27 1982-08-24 P.H.D. Of Puerto Rico, Inc. Document feed mechanism
DE3046592A1 (de) * 1980-12-11 1982-07-22 Philips Patentverwaltung Gmbh, 2000 Hamburg "transporteinrichtung zum zufuehren und abfuehren eines endlosformulares zur schreibwalze"
US4429984A (en) * 1981-03-18 1984-02-07 Minolta Camera Kabushiki Kaisha Copying machine with traction feed
CH655056A5 (de) * 1982-04-20 1986-03-27 Albert Rutishauser Transportvorrichtung zum zufuehren perforierter aufzeichnungstraeger zu einer schreibwalze und verwendung der transportvorrichtung.
JPS6073671A (ja) * 1983-09-30 1985-04-25 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション パタ−ン処理装置
DE3400894A1 (de) * 1984-01-10 1985-07-18 Mannesmann AG, 4000 Düsseldorf Formularabtrenneinrichtung fuer randgelochte endlosformulare mit abreissperforationen
DE3664745D1 (en) * 1985-01-28 1989-09-07 Siemens Ag Method for controlling the paper-feeding in a printing device
JPH0376671A (ja) * 1989-08-21 1991-04-02 Brother Ind Ltd プリンタの用紙送り装置
JP2946246B2 (ja) * 1991-03-25 1999-09-06 武藤工業株式会社 用紙駆動型自動製図機におけるロール紙送り機構

Also Published As

Publication number Publication date
US5350100A (en) 1994-09-27
WO1990011895A1 (fr) 1990-10-18
JPH04506637A (ja) 1992-11-19
EP0466712A1 (fr) 1992-01-22

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