EP0934221B1 - Procede et dispositifs pour introduire un materiau sous forme de feuille dans une imprimante ou une photocopieuse - Google Patents

Procede et dispositifs pour introduire un materiau sous forme de feuille dans une imprimante ou une photocopieuse Download PDF

Info

Publication number
EP0934221B1
EP0934221B1 EP97945770A EP97945770A EP0934221B1 EP 0934221 B1 EP0934221 B1 EP 0934221B1 EP 97945770 A EP97945770 A EP 97945770A EP 97945770 A EP97945770 A EP 97945770A EP 0934221 B1 EP0934221 B1 EP 0934221B1
Authority
EP
European Patent Office
Prior art keywords
sheet
draw
transport
section
sheets
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
EP97945770A
Other languages
German (de)
English (en)
Other versions
EP0934221A2 (fr
Inventor
Gerhard Oberhoffner
Stephan Pilsl
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
Oce Printing Systems GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Oce Printing Systems GmbH and Co KG filed Critical Oce Printing Systems GmbH and Co KG
Publication of EP0934221A2 publication Critical patent/EP0934221A2/fr
Application granted granted Critical
Publication of EP0934221B1 publication Critical patent/EP0934221B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H43/00—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/22—Distance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed

Definitions

  • the invention in a first aspect relates to a method of inputting sheet material into a printer or copier.
  • an outer cover sheet is withdrawn from a stack of sheets in response to a start signal and transported at a feed rate in the direction of a subsection of the transport path, in which it is transported at an approximately constant desired transport speed, which corresponds to the feed rate.
  • a disadvantage of the known method for inputting sheet material is that the distance between successive sheets varies. This is due to the fact that the frictional engagement between intake rollers or feeder belts and the leaves is not guaranteed one hundred percent, so that a so-called micro-slip occurs.
  • the microslip that occurs depends on the paper properties, e.g. Paper thickness and surface roughness. Adjustment of the pull-in force, in particular when removing the sheets from the stack, also leads to a change in the distance between successive sheets. When removing the sheets from the stack, a minimal displacement of the leaves adjacent to the cover sheet can not be prevented, so that the exact position of the leading edge of the sheet in the transport direction is not known when pulling. The consequence, in turn, is that a change in the distance between successive sheets occurs.
  • European patent application EP 0 428 922 A2 discloses a device for document processing.
  • the conveying density is increased by adjusting the distance between the documents by means of a plurality of light barriers for detecting the position of the documents.
  • European Patent Application EP 0 167 091 A1 discloses a separating device for letter mail. By taking into account a default value for the acceleration path at the time of insertion, the distance between the letters can be set more accurately.
  • German patent application DE 27 58 007 A a method for controlling the deduction process is explained in a device for dispensing individual shipments of different lengths.
  • the reference edge is selected automatically for setting the distance between successive correspondence.
  • the object of the first aspect of the invention is to provide a simple method for the input of sheet material, which allows an approximately constant pitch between the sheets entered one after the other.
  • the first aspect of the invention is based on the recognition that blade spacing can be most easily adjusted when the blades are retracted, as later correction of a distance would result in a change in the location of all subsequent blades. A setting of the distance should be both below and below be possible when exceeding a desired distance. Therefore, in the first aspect of the invention, the transport of the sheet is so delayed that results in a predetermined equal distance until reaching the portion between immediately successively transported leaves. Thus, adjusting the distance between the sheets when the sheets are fed into the printer. If the intake speed is relatively low, it is hardly or not delayed. However, if the intake speed is relatively high, it will be delayed for a longer time to set the target distance. Even if the drawing speed is lower than or equal to the transporting speed, a delay can be set by retarding the cover sheet when drawing in, when the sheets are peeled from the stack at a smaller distance than the predetermined same target distance.
  • Delaying the transport is a simple technical measure, for example, by stopping a collection device or by slowing down the same.
  • the feed rate is in particular greater than the transport speed of the sheets within the subsection.
  • the number of printed sheets per unit time is not reduced by the first embodiment of the invention, since in the worst case the feed rate has the size of the transport speed, in which case no or only a very small delay occurs.
  • first aspect of the invention is located between the sheet stack and subsection a Voreinzugsposition, at which the position of the sheet is determined. By this measure it is achieved that the position of the sheet can be used for further control operations.
  • the varying position of the leaves in the leaf compartment has by detecting the exact position of the sheet and measures based on it no longer influence on a possible change in the blade spacing.
  • the sheet between the sheet stack and subsection is stopped and preferably transported at the retraction speed after a holding time has elapsed.
  • the sheet is stopped exactly at the Voreinzugsposition.
  • the holding time is such that, seen in the transport direction between the cover sheet and a previously withdrawn sheet of the sheet stack of the same predetermined distance during transport of the cover sheet to the subsection established.
  • the hold time can be determined by simple path-time calculations.
  • the distance between the holding position and the transport device, and the feed rate are known.
  • the stopping can be realized eg via stepper motors and / or couplings.
  • the invention in a second aspect relates to a device for drawing sheet material into a printer or copier, in particular for carrying out a method according to one of the preceding claims.
  • the above-mentioned technical effects are also transferred to the sheet material drawing apparatus according to the second aspect of the invention.
  • a take-off roll acting on the cover sheet is used, with which the respective withdrawn sheet is fed to a draw-in belt, which then feeds the sheet to the transport device.
  • Rolls and tapes are equivalent technical means that can be exchanged against each other.
  • the transport device detects the withdrawn sheet before its rear edge is transported past the take-off roll.
  • the take-off roller which is not usually located directly on the leading edge of the sheet stack, can be unlocked upon detection of the sheet by the transport device until the sheet is completely removed from the stack of sheets.
  • the sheet position is detected with a first photocell immediately behind the retractor.
  • the collection device is released, so that the sheet rests in a Voreinzugsposition.
  • a second light barrier is preferably arranged approximately at the predetermined distance in the transport direction behind the first light barrier. The control unit switches, depending on a signal of the second light barrier, which is generated for example by the back edge of an already withdrawn sheet, the collection device again effective.
  • the sheet located in the advancing position is further conveyed at the predetermined distance from the previous sheet.
  • the feed rate can be measured by measuring the duration of the transport of a sheet between the two light barriers. From the feed speed, the time can be derived at which the sheet is detected by the transport device, so that the collection device can be unlocked at this time. In addition, it can be calculated using the feed rate, when the withdrawn sheet has a minimum distance to the stack. If the minimum distance is reached, the control unit switches the feeder again effectively, so that a next sheet is removed.
  • the invention in a third aspect relates to a method for inputting sheet material into a printer or copier, which can be used in combination with the method according to the first aspect of the invention or separately.
  • the method according to the third aspect of the invention is intended to prevent multiple sheet feeding.
  • multiple sheet feeds at least two sheets that are at least partially overlapping are peeled off the sheet stack at the same time. The result is an increased sheet consumption and possibly misprints. A misprint is inevitable if the sheets are printed on both sides.
  • a known measure for preventing multiple sheet feeding is to increase the pressing force of a take-off device when peeling off the sheets from the sheet stack. By this measure, however, not all multiple or double sheet feeding can be prevented become. Double-sheet feeds arise, for example, with poor paper quality or with burred cut edges.
  • British Patent Application GB 2 012 727 A discloses a collection device with a vibrating motion.
  • the shaking movement is performed transversely to the transport direction of the sheet material. This requires a complex mechanical vibrator.
  • the object of the third aspect of the invention is to prevent multiple feeds when inputting sheet material into a printer or copier.
  • the cover sheet is transported in particular at the peeling off of the sheet stack with a repeatedly greatly varying feed speed.
  • the cover sheet is withdrawn from the stack of sheets for a defined period of time in the start / stop mode.
  • sheets also detach from each other which, when the feed rate is varied once, e.g. when accelerating, would not solve each other.
  • a method according to the third aspect of the invention thus achieves a reduction of multiple sheet feeds.
  • the intake speed can be varied in accordance with a clock signal with little outlay on software or software.
  • the feed rate is varied only when multiple sheet feeds occur. Varying the feed speed can be effectively switched by both an operator and a sensor unit. Thus, the leading to increased wear variation of the Feeding speed is only performed if, due to the paper quality, an increased number of multiple or double-sheet feeds is to be expected. In addition, due to the varying intake speed, a loss of speed occurs during retraction of the leaves, which is justifiable only when the risk of multiple sheet feeds is actually present.
  • the invention relates in a fourth aspect to a device for drawing sheet material into a printer or copier, in particular for carrying out the method according to the third aspect of the invention.
  • the technical effects mentioned in the third aspect of the invention also apply to the device according to the fourth aspect of the invention.
  • FIG. 1 shows the side view of a feeder 10 for feeding paper sheets 12, 14 of a sheet stack 16.
  • the components of the feeder 10 are supported by a frame 18, to which a pivotable about one end of the lever 20 is attached.
  • a take-off roller 22 is arranged, which is pressed by means of a spring, not shown, against the sheet stack 16.
  • Transport rollers 24, 26 Between two rotatably mounted on the frame 18 Transport rollers 24, 26, a conveyor belt 28 is tensioned.
  • a non-rotatable stop roller 30 Immediately on the transport belt 28 is located near the transport roller 24, a non-rotatable stop roller 30 at which the conveyor belt is passed approximately at an angle of 170 °.
  • a counter-rotating roller 32 is in contact with the conveyor belt 28 in the region of the transport roller 26.
  • An unillustrated stepper motor is connected via a coupling device with the take-off roller 22, the transport roller 24 and the counter-rotating roller 32, so that the take-off roller 22 in the direction of a direction of rotation arrow 34, the conveyor belt 28 in the direction of arrow 36 and the counter-rotating roller 32 in the direction of Direction of rotation arrow 38 rotates.
  • the surfaces of the take-off roller 22, the conveyor belt 28 and the counter-rotating roller 32 is made of a rubberized material with a very high coefficient of friction.
  • the cover sheet 12 moves in the transport direction 36 to the mating roller 32 to.
  • the respectively transported sheet is transported from the feeder 10 in the direction of an arrow 42 to another transport device, which then transports the withdrawn sheets to a printing unit, and a fuser to a sheet delivery.
  • Figure 2 shows a path-time diagram for three retracted sheets 50, 52 and 54, wherein on the ordinate axis 55 of the transport path s and on the abscissa 57, the time t are removed.
  • the path-time diagram with a representation of the collection device 10 according to Figure 1 is deposited.
  • the take-off roller 22 is located at the zero point of the ordinate axis 55 at the beginning of the transport path s of the sheets.
  • positions a1 to a12 are to be distinguished, which are arranged in this order along the transport path.
  • the transport roller 24 At the position a1 is the transport roller 24 and at the position a2 the stop roller 30.
  • the difference of a position a3 and the position a2 indicates a minimum distance between two consecutive sheets in the retractor 10, wherein the minimum distance is selected so that an approach of the following sheet on the previous sheet is excluded.
  • the transport roller 26 and the counter-rotating roller 32 are arranged.
  • a first photoelectric sensor 56 is disposed at a position a5 so that a light beam is interrupted by a sheet transported thereover.
  • a position a6 is located between the light barrier 56 and a second light barrier 58 for detecting the sheet position at a position a7.
  • Between the light barrier 58 and a first transport roller pair of transport rollers 60 and 62 of a transport device of the printer at a position a9 is a position a8.
  • the meaning of the positions a6, a8 and a position a10 in the transport direction immediately behind the transport rollers 60, 62 will be explained below.
  • a position a11 is a third light barrier 64 seen in the transport direction in front of a second transport roller pair of transport rollers 66, 68 at a position a12.
  • the sheet 50 is retracted by activating the feeder 10 starting at a time t0.
  • the leading edge 70 of the sheet 50 moves from the position a1 at a drawing speed v1 indicated by a dotted line 70.
  • the sheet 50 is the first drawn sheet of a group of sheets 50, 52, 54, etc. to be fed and is therefore transported without stop. Between the photocells 56 and 58, the drawing speed v1 is measured.
  • the transport rollers 60, 62 have securely grasped the sheet 50.
  • the leading edge 70 is further transported at a transport speed v0, which is smaller than the drawing speed v1.
  • the rear edge of the sheet 50 is still in front of the feed roller 22 when viewed in the direction of transport 36.
  • the feed device 10 is released at time t3, that is, the stepper motor, take-up roller 22, conveyor belt 28 and reverse roller 32 are no longer driven.
  • the sheet 50 is thus transported only by the transport rollers 60, 62 at the transport speed v0, so that the rear edge 72 of the sheet 50 must have the transport speed v0.
  • leading edge 74 can not be accurately predicted because it is between positions a1 and a2. In the worst case, however, the starting position of the leading edge 74, as shown in Figure 2, the position a2. However, the safety distance a3-a2 is selected such that, with the maximum pull-in speed v1, the leading edge 74 can not catch up with the rear edge 72 of the leading sheet 50 up to the position a5. At position a5, i. upon reaching the light barrier 56, the sheet 52 is then stopped in a pre-set position. The stopping in the Voreinzugsposition takes place whenever there is a leading sheet in the area of the light barrier 58.
  • the retracting device 10 is again activated effectively, so that the leading edge 74 continues to move at the retraction speed v1 at a time t5 (see arrow P1).
  • a time t7 can be calculated when t2 is replaced by t6 and t3 in the formula (1) by t7.
  • the collection device 10 is released again.
  • the leading edge 74 is detected by the transport rollers 60, 62 and is transported at the transport speed v0.
  • a distance A1 remains unchanged since both edges move at the same transport speed v0.
  • the distance A1 is smaller than a desired distance AS.
  • the distance A1 is measured with the light barrier 64 and is known at a time t9 at which the leading edge 74 reaches the position a11 of the light barrier 64.
  • the retraction device 10 is again activated, since according to formula (2), the rear edge 74 of the blade 52, the position a3 has reached.
  • t3 must be replaced by t7 and t4 by t8.
  • the leading edge 78 of the sheet 54 moves at the pull-in speed v1 to the pre-feed position a5 at the light barrier 56.
  • the feed device 10 is consequently released at a time t10.
  • the control of the distances between the sheets 50, 52 and 54 is carried out in a similar manner.
  • a change in the intake speed occurs, for example. when inserting a sheet stack with sheets of other quality, by increasing the pressing force of the feed belt 28 to the stop roller 30th
  • the sheet 50 is now started from the position a2 at time t0, with the leading edge 70 'moving at the feed speed v0. This speed is detected between the light barrier 56 and the light barrier 58, and replaced in the formulas (1) to (3), the value for the intake speed v1. Otherwise, the transport of the sheet 50 is carried out exactly as described above, whereby the control operations mentioned there are carried out.
  • the sheet 52 is started at time t4 with the leading edge at the position a2 and the drawing speed v0.
  • the leading edge 74 ' moves to position a5 where the light barrier 56 is located, i. to the pre-closing position.
  • the rear edge 72 of the sheet 50 passes the light barrier 58 again at the time t5, so that at this time the retraction device 10 is again activated effectively and thus the sheet 52 with the feed speed v0 moves on (see arrow P1).
  • the front edge 74' reaches the position a10, whereupon the collection device 10 is released.
  • the light barrier 64 detects a distance A0 between the rear edge 72 and the leading edge 74 '. This distance A0 is greater than the desired distance AS.
  • a delay time ⁇ t0 is determined, which has a negative sign.
  • the distance A0 is used, and instead of v1 the new pull-in speed v0 is used.
  • the negative sign of ⁇ t0 means that the sheets must be started from the pre-feed position before the back edge, e.g. 76, the leading sheet passes the position a7 at the light barrier 58.
  • the earlier starting from the advance position a5 results in a change in the distance ⁇ A0, which leads to a distance A0 'between the blade 52 and the blade 54 and is dimensioned so that the distance A0' is equal to the desired distance AS.
  • the setpoint distance AS between the leaves can be adjusted in an analogous manner with the aid of the control described with reference to FIG.
  • a constant distance at least between the sheets following the first sheet is of particular importance when the sheets are in groups of e.g. each six sheets are fed into a high-performance printer, which has two printing units and in which cross over transport routes between these two printing units.
  • the transport routes can be made very short if the total length of a group of blades can be set within narrow limits. Short transport routes result in a compact design of the high-performance printer.
  • Figure 3 shows a path-time diagram for three retracted sheets 100, 102 and 104, wherein on the ordinate axis 106 of the transport path s and on the abscissa axis 108, the time t are removed.
  • the path-time diagram with a representation of the collection device 10 according to Figure 1 is deposited.
  • positions a1 to a12 and there explained reference numerals 56 to 78 are also registered in the figure 3.
  • the regulation of the sheet spacing between the sheets 100, 102 and 104 is analogous to the control of the sheet spacing of the sheets 50, 52 and 54 according to Figure 2 at the feed rate v1.
  • the collection device 10 is activated seven times and released six times. The activation times are about half as large as the times in which the collection device 10 is activated.
  • the first sheet 100 continues to engage the feeding device 10, so that the sheet 100 does not stop in the preforming position.
  • the retractor 10 is released as soon as the leading edge 74, 78 is in the advanced position so that the sheet 102, 104 is stopped in the advancing position.
  • the turn-on time of the retractor 10 is 60 ms each, and the turn-off time is 10 ms each, while the leading edge of a sheet 100, 102, 104 is between positions a1 and a5.

Landscapes

  • Sheets, Magazines, And Separation Thereof (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)

Abstract

L'invention concerne un procédé pour introduire un matériau sous forme de feuille (50 à 54) dans une imprimante. Une feuille (50 à 54) située à l'extérieur sur le haut d'une pile est prélevée de la pile et est transportée à une vitesse d'introduction (v0, v1) dans le sens d'une section partielle (a10 à a12) du parcours. La limite inférieure (v0) de la vitesse d'introduction est égale ou supérieure à la vitesse de transport (v0) des feuilles (50 à 54) dans la section partielle (a1 à a12). Jusqu'à ce que la section partielle (a10 à a12) ait été atteinte, le transport de la feuille (52, 54) est décalé de manière à former un écart (AS) identique prédéterminé entre des feuilles (52, 54) transportées directement l'une derrière l'autre.

Claims (21)

  1. Procédé d'introduction de feuilles (12, 14 ; 50, 52, 54) d'une pile de feuilles (16) dans un appareil d'impression ou un copieur, ledit procédé comportant les étapes suivantes :
    - une première feuille (12, 50) du côté extérieur est retirée de la pile de feuilles (16), et transportée sur une première section (a1 à a5) vers une deuxième section (a10 à a12) d'un chemin de transport,
    - la deuxième feuille (14, 52, 54), qui suit la première feuille, est retirée de la pile de feuilles (16),
    - la deuxième feuille (14, 52, 54) est transportée dans la première section (a1 à a5) à une vitesse respective d'insertion (v1), vers la deuxième section (a10 à a12) du chemin de transport,
    - le transport de la deuxième feuille (14, 52, 54) est retardé jusqu'à ce que la deuxième section (a10 à a12) soit respectivement atteinte de telle sorte que, pour la distance à la première feuille (12, 50, 52) et pour les feuilles (12, 14, 50, 52) immédiatement suivantes dans la deuxième section (a10 à a12), l'on obtient avec précision une distance de consigne prescrite (AS),
    les deux feuilles (12, 14, 50, 52, 54) sont transportées dans la deuxième section (a10 à a12) à la même vitesse de transport (v0).
  2. Procédé selon la revendication 1, caractérisé en ce que la distance entre la première feuille (12, 50, 52) et la deuxième feuille (14, 52, 54) dans la première section (a1 à a5) est inférieure à la distance de consigne (AS) dans la deuxième section (a10 à a12).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la vitesse d'insertion (v1) dans la première section (a1 à a5) est supérieure à la vitesse de transport (v0) des feuilles (50 à 54) à l'intérieur de la deuxième section (a10 à a12).
  4. Procédé selon la revendication 1 ou 2, caractérisé en ce que la vitesse d'insertion (v1) est inférieure ou égale à la vitesse de transport (v0).
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que les deux feuilles (12, 14 ; 50, 52) sont retirées de la pile de feuilles (16) à une distance l'une de l'autre qui est inférieure à la distance de consigne (AS).
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'on calcule un instant (t3) où le bord avant (70) de la première feuille (12, 50, 52) atteint la deuxième section (a10 à a12), et en ce que le retrait de la deuxième feuille (14, 52, 54) est effectué à un autre instant (t4) après l'instant calculé (t3).
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'une position avant insertion (a5), à laquelle on définit la position de la deuxième feuille (14, 52, 54), est située entre la pile de feuilles (16) et la deuxième section (a10 à a12).
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que la deuxième feuille (14,52,54) est arrêtée entre la pile de feuilles (16) et la deuxième section (a10 à a12), et, après écoulement d'un temps d'arrêt, est à nouveau transportée, dans lequel le temps d'arrêt est dimensionné de telle façon que soit réglée la distance de consigne (AS) entre la deuxième feuille (14, 52, 54) et la première feuille (12,50,52),par référence à la direction de transport.
  9. Dispositif d'insertion de feuilles (12, 14 ; 50, 52, 54) d'une pile de feuilles (16) dans un appareil d'impression ou un copieur, destiné notamment à mettre en oeuvre un procédé selon l'une des revendications précédentes, ledit dispositif comportant :
    au moins un compartiment de feuilles destiné à recevoir la pile de feuilles (16),
    au moins un dispositif d'insertion (10) destiné à retirer la première feuille (12, 50) du côté extérieur dans la pile de feuilles (16),
    afin de transporter la première feuille (12, 50) sur une première section (a1 à a5) vers une deuxième section (a10 à a12) d'un chemin de transport, et
    afin de retirer la deuxième feuille (14, 52, 54) qui suit la première feuille (12, 50),
    au moins un dispositif de transport (60, 62) destiné à transporter les deux feuilles (12, 14, 50, 52, 54) dans la deuxième section (a10 à a12) à la même vitesse de transport (v0),
    et une unité de commande destinée à commander le dispositif d'insertion (10),
    l'unité de commande retardant le transport de la deuxième feuille (14, 52, 54) jusqu'à ce que la deuxième section (a10 à a12) soit atteinte, de telle sorte que, pour la distance à la première feuille (12, 50) et pour les feuilles (12, 14, 50, 52) immédiatement suivantes dans la deuxième section (a10 à a12), l'on obtient avec précision une distance de consigne prescrite (AS).
  10. Dispositif selon la revendication 9, dans lequel la vitesse d'insertion (v1) est supérieure à la vitesse de transport (v0).
  11. Dispositif selon l'une des revendications 9 ou 10, caractérisé en ce que
    une première barrière photoélectrique (56), destinée à détecter la position des feuilles, est placée avantageusement juste en arrière du dispositif d'insertion (10), par référence à la direction de transport des feuilles (42),
    une deuxième barrière photoélectrique (58) est placée en arrière de la première barrière lumineuse (56), par référence à la direction de transport,
    l'unité de commande mesure la vitesse d'insertion (v0, v1) à l'aide d'au moins une des barrières photoélectriques (56, 58),
    et l'unité de commande déconnecte le dispositif d'insertion (10) en fonction de la vitesse d'insertion mesurée (v0, v1) lorsque la feuille (50 à 54) est détectée par le dispositif de transport (60, 62).
  12. Dispositif selon l'une des revendications 9 à 11, caractérisé en ce que le dispositif d'insertion (60, 62) comporte un rouleau de retrait (22), qui agit sur les feuilles (50 à 54) et qui permet d'amener la feuille retirée (50 à 54) à une bande d'insertion (28) qui amène ensuite la feuille (50 à 54) au dispositif de transport (60, 62).
  13. Dispositif selon l'une des revendications 9 à 12, caractérisé en ce que le dispositif de transport (60, 62) est placé à une distance (a10) du rouleau de retrait qui est avantageusement légèrement inférieure à la longueur (L) d'une feuille par référence à la direction de transport (36).
  14. Dispositif selon l'une des revendications 9 à 13, caractérisé en ce que l'unité de commande déconnecte le dispositif d'insertion (10) en fonction d'un signal provenant de la première barrière photoélectrique (56).
  15. Dispositif selon l'une des revendications 9 à 14, caractérisé en ce que l'unité de commande active le dispositif d'insertion (10) en fonction d'un signal provenant de la première barrière photoélectrique (56) ou de la deuxième barrière photoélectrique (58).
  16. Dispositif selon l'une des revendications 9 à 15, caractérisé en ce que l'unité de commande active le dispositif d'insertion (10) lorsque la feuille retirée (50 à 54) se trouve à une distance minimale (a3 moins a2) par rapport à la pile de feuilles (16).
  17. Dispositif selon l'une des revendications 9 à 16, caractérisé en ce que
    une troisième barrière photoélectrique (64) est disposée dans le dispositif de transport (60,62 ; 66,68), afin de détecter la distance (A0, A1) entre des feuilles successives (50 à 54),
    et l'unité de commande détermine, en fonction de la distance (A0, A1) et d'une vitesse d'insertion préalablement mesurée (v0, v1), un temps d'arrêt pendant lequel le dispositif d'insertion (10) est déconnecté lors de l'insertion d'une feuille (52, 54),
    le temps d'arrêt étant dimensionné de façon à régler la distance de consigne prédéfinie (AS) entre les feuilles (50 à 54), par référence à la direction de transport, dans le dispositif de transport lors de l'activation du dispositif d'insertion (10) après écoulement du temps d'arrêt.
  18. Procédé selon l'une des revendications 1 à 8, caractérisé en ce que la première feuille ou la deuxième feuille (12, 14, 50 à 52) est transportée à une vitesse d'insertion variant fortement à plusieurs reprises lors du retrait de la feuille (50 à 54) de la pile de feuilles (16).
  19. Procédé selon la revendication 18, caractérisé en ce que la vitesse d'insertion est modifiée périodiquement.
  20. Procédé selon la revendication 18 ou 19, caractérisé en ce que la vitesse d'insertion n'est modifiée que lorsque l'on effectue de multiples insertions de feuilles.
  21. Dispositif d'insertion de matière en feuilles dans un appareil d'impression ou un copieur selon l'une des revendications 9 à 17, caractérisé en ce que l'unité de commande modifie fortement à plusieurs reprises la vitesse d'insertion lors du retrait de la feuille (50 à 54) de la pile de feuilles (16).
EP97945770A 1996-10-22 1997-10-21 Procede et dispositifs pour introduire un materiau sous forme de feuille dans une imprimante ou une photocopieuse Expired - Lifetime EP0934221B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19643614 1996-10-22
DE19643614 1996-10-22
PCT/DE1997/002446 WO1998017563A2 (fr) 1996-10-22 1997-10-21 Procede et dispositifs pour introduire un materiau sous forme de feuille dans une imprimante ou une photocopieuse

Publications (2)

Publication Number Publication Date
EP0934221A2 EP0934221A2 (fr) 1999-08-11
EP0934221B1 true EP0934221B1 (fr) 2007-03-28

Family

ID=7809478

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97945770A Expired - Lifetime EP0934221B1 (fr) 1996-10-22 1997-10-21 Procede et dispositifs pour introduire un materiau sous forme de feuille dans une imprimante ou une photocopieuse

Country Status (4)

Country Link
US (1) US6499733B1 (fr)
EP (1) EP0934221B1 (fr)
DE (2) DE19781150D2 (fr)
WO (1) WO1998017563A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2797437B1 (fr) * 1999-08-09 2001-09-07 Mannesmann Dematic Postal Automation Sa Dispositif de convoyage d'objets plats avec un systeme de synchronisation
JP4345247B2 (ja) * 2001-07-24 2009-10-14 ブラザー工業株式会社 記録装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1049948A (fr) * 1976-03-27 1979-03-06 Werner Frank Dispositif de distribution successive de pieces de courrier empilees
DE2613261C3 (de) * 1976-03-27 1978-09-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Einrichtung zur aufeinanderfolgenden Abgabe von Briefsendungen aus einem Stapel
JPS5497967A (en) * 1978-01-19 1979-08-02 Kopia Kk Automatic paper feeder
US4451027A (en) * 1980-01-09 1984-05-29 Burroughs Corp. Constant spacing document feeder
US4331328A (en) * 1980-06-30 1982-05-25 Burroughs Corporation Controller for a servo driven document feeder
US4523832A (en) * 1982-09-21 1985-06-18 Xerox Corporation Sheet transport
JPS59227639A (ja) * 1983-06-07 1984-12-20 Ricoh Co Ltd 給紙装置の制御方法
JPS60236954A (ja) * 1984-05-08 1985-11-25 Ricoh Co Ltd 摩擦分離給紙制御方法
JPS60236938A (ja) * 1984-05-09 1985-11-25 Hitachi Ltd 紙葉類の分離装置
DE3424397A1 (de) * 1984-07-03 1986-01-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Vereinzelungseinrichtung fuer flache gegenstaende
US5121915A (en) * 1989-11-20 1992-06-16 International Business Machines Corporation Document processor having improved throughput capabilities
US5118089A (en) * 1989-09-05 1992-06-02 Konica Corporation Automatic document feeding apparatus
JP2700826B2 (ja) * 1989-09-14 1998-01-21 コニカ株式会社 自動原稿搬送装置
WO1992016444A1 (fr) * 1991-03-21 1992-10-01 Bell & Howell Phillipsburg Company Dispositif d'alimentation de document a intervalle constant et procede de fonctionnement du dispositif
JP2659344B2 (ja) * 1995-02-10 1997-09-30 日本電気ロボットエンジニアリング株式会社 紙葉類の摩擦式供給機構

Also Published As

Publication number Publication date
DE59712832D1 (de) 2007-05-10
EP0934221A2 (fr) 1999-08-11
US6499733B1 (en) 2002-12-31
DE19781150D2 (de) 1999-08-12
WO1998017563A3 (fr) 1998-08-27
WO1998017563A2 (fr) 1998-04-30

Similar Documents

Publication Publication Date Title
DE2621295C2 (fr)
DE19607304C1 (de) Verfahren zur Steuerung einer Abzugsvorrichtung für flache Sendungen von einem Stapel
DE2460318C3 (de) Vorrichtung zur Aufnahme und Zuführung von einzelnen Blättern zu einem Vorratsbehälter hin und aus diesem heraus
DE2457112C3 (de) Blatttransportvorrichtung
DE2744729A1 (de) Anordnung fuer eine wahlweise versetzte ablage von blaettern unterschiedlicher laenge
EP0913352A2 (fr) Plieuse à poches et procédé de contrÔle du registre dans une plieuse à poches
EP0186152B2 (fr) Dispositif et procédé pour la séparation de feuilles
DE3212652A1 (de) Blatteinzugsvorrichtung fuer ein kopiergeraet o.dgl.
EP2132117B1 (fr) Procédé et circuit de commande permettant de régler un interstice
WO1982000995A1 (fr) Dispositif pour l'empilage de produits plans imbriques, en particulier de produits imprimes
EP1013589A2 (fr) Plieuse à poches et procédé de contrôle du registre dans une plieuse à poches
EP0934221B1 (fr) Procede et dispositifs pour introduire un materiau sous forme de feuille dans une imprimante ou une photocopieuse
DE19508254C5 (de) Verfahren zum Transportieren von einzelnen Bogen
EP0185395B1 (fr) Dispositif de séparation de feuilles
DE3500520A1 (de) Vereinzelungsmaschine
EP2935060B1 (fr) Dispositif et procédé permettant de faire tourner des articles plats
DE19624277C2 (de) Vorrichtung zum Schneiden von Papierbahnen
DE102004002235B4 (de) Puffereinrichtung mit einem Vorratspuffer zur Aufnahme einer mit variierender Geschwindigkeit zugeführten Bedruckstoffbahn bei einer elektrografischen Druckeinrichtung
DE3531145C2 (fr)
DE10315648A1 (de) Vorrichtung zum blattweisen Zuführen von blattförmigen Bedruckstoffen von einem Stapel zu einem Transportpfadeingang
DE19654986C2 (de) Vorrichtung zum Schneiden von Papierbahnen
DE2324959B2 (de) Entnahme- und Fördervorrichtung für das jeweils obere Schriftstück eines Schriftgutstapels
EP1038812B1 (fr) Méthode et dispositif pour le contrôle d'un débit de documents
DE3136113A1 (de) Sortier- und verteilvorrichtung
EP0732284B1 (fr) Dispositif pour la détection de double feuille sur une machine traitant des feuilles

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19990521

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17Q First examination report despatched

Effective date: 20050118

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAC Information related to communication of intention to grant a patent modified

Free format text: ORIGINAL CODE: EPIDOSCIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 59712832

Country of ref document: DE

Date of ref document: 20070510

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20070627

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20080102

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20081021

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20081230

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20081028

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091102

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100501

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091021