EP0519945B1 - Procede pour le positionnement d'un support d'enregistrement en bandes dans une imprimante - Google Patents

Procede pour le positionnement d'un support d'enregistrement en bandes dans une imprimante Download PDF

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Publication number
EP0519945B1
EP0519945B1 EP91905093A EP91905093A EP0519945B1 EP 0519945 B1 EP0519945 B1 EP 0519945B1 EP 91905093 A EP91905093 A EP 91905093A EP 91905093 A EP91905093 A EP 91905093A EP 0519945 B1 EP0519945 B1 EP 0519945B1
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EP
European Patent Office
Prior art keywords
block
data carrier
paper
correction
counter
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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.)
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EP91905093A
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German (de)
English (en)
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EP0519945A1 (fr
Inventor
Alfs Ludger
Franz Kristen
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Vodafone GmbH
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Mannesmann AG
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    • 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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/36—Blanking or long feeds; Feeding to a particular line, e.g. by rotation of platen or feed roller
    • B41J11/42—Controlling printing material conveyance for accurate alignment of the printing material with the printhead; Print registering
    • B41J11/46—Controlling printing material conveyance for accurate alignment of the printing material with the printhead; Print registering by marks or formations on the paper being fed

Definitions

  • the invention relates to a method for positioning web-shaped recording media in printing devices according to the features of claim 1.
  • a drive device responsible for the positioning must be designed accordingly in order to avoid positioning errors to avoid.
  • the cause of the positioning errors in which the approached target position of the movable web-shaped recording medium having scannable elements deviates from the desired position, are predominantly tolerances in the drive device. If in the following we speak of a web-shaped recording medium, we mean a recording medium that is different both in terms of its nature (e.g. paper, cardboard, film) and the type of elements that can be scanned (e.g. edge perforation, barcode-like stripe).
  • a typical application for this is in particular for the transport of perforated continuous paper in printing devices, where the continuous paper is fed to a printing station by an electric motor-driven transport device.
  • the electromotive-driven transport device consists of an electromotive-driven platen roller and pen wheels which engage in the perforations on the edge of the continuous paper. Due to tolerances of the feed mechanism, an electric motor of the transport device, the platen and an occurring slip between the platen and the continuous paper in the friction drive, the approached position of the continuous paper drifts further and further away from the desired position with each feed in relation to the upper edge of the continuous paper.
  • the associated continuous increase in the positioning error has an insignificant effect on a single sheet, in contrast to continuous paper, because of the shorter paper length. The positioning error must therefore be compensated for when printing on continuous paper. The positioning error is particularly noticeable when the continuous paper is pre-printed form paper.
  • a mechanical paper tractor in which, for example, a motor-driven pinwheel arranged on one side engages in the peripheral perforation of the continuous paper for the transport of continuous paper. If the pin wheel coupled to the motor, for example a stepper motor, is driven via a drive shaft, the continuous paper is fed and moved past a print head via a platen roller.
  • the mechanical paper tractor has the disadvantage that a deviation between the approached printing position and the desired position which arises due to the tolerances cannot be compensated for.
  • a device and a method for feeding edge-perforated continuous paper for example in printing devices, are known, in which or by means of feed means the edge-perforated continuous paper is fed fricatively to a printing position.
  • the continuous perforated continuous paper is to be advanced without any positioning errors occurring and without impairing the feed by pins of a mechanical tractor engaging in the peripheral perforations of the continuous paper.
  • optoelectronic scanning means are arranged in the area of the friction roller and emit a signal as a function of paper edge hole scanning of the continuous paper deliver to a control arrangement, on the basis of which the feed of the continuous paper can be controlled by the control arrangement.
  • the distance between two adjacent edge holes is determined, in which the number of motor steps determined during the relative movement of the continuous paper based on the optoelectronic scanning means for the distance covered between two edge holes is compared with a theoretical number of motor steps. Depending on this comparison result, a positioning error of the continuous paper resulting from the discrepancy between the actual and theoretical number of motor steps within a hole spacing in the relative movement of the continuous paper compared to the optoelectronic scanning means is corrected immediately when a predetermined value is exceeded.
  • a number of motor steps is determined, which corresponds to the deviation of the optoelectronic scanning means in relation to a starting position of the continuous paper during the edge hole scanning.
  • the determined number of motor steps is taken into account again after the edge holes belonging to one side of the continuous paper have been scanned.
  • the present invention was based on the object of specifying a method for positioning web-shaped record carriers in printing devices, in which a web-shaped record carrier having scanning elements that can be moved by an electromotive driven transport device, taking into account positioning errors that occur, and is simple and independent of interventions during a positioning process of the record carrier can be positioned inexpensively.
  • a positioning error is electronically corrected when a moveable, scan-like, web-shaped recording medium, for example an edge-perforated, web-shaped folded paper, is positioned in a printing device.
  • the reason for the positioning error are mechanical tolerances of a transport device driven by an electric motor, for example tolerances and errors of an electric motor, tolerances of a platen roller and any slippage that occurs between the edge-punched folding paper and the platen roller. In addition, some of these tolerances are temperature dependent.
  • the electronic correction of the positioning error results in a simplified structure of the electromotive transport device and greater positioning accuracy of the recording medium to be positioned.
  • the platen roller is preferably designed as a friction roller in order to be able to easily transport the web-shaped recording medium without great mechanical outlay.
  • the friction drive of the web-shaped recording medium requires a paper guiding device which, for example, transports edge-perforated continuous paper by a pinwheel driven by an electric motor and decoupled from the transport device into a roller wedge of the transport device and guides the continuous paper laterally during the friction drive.
  • the scannable elements designed as marginal holes enable simple scanning, in which an optical scanner for a paper-marginal hole transition or an marginal hole-paper transition delivers a signal with which the positioning error is determined.
  • a microprocessor is preferably used which, depending on the signal, takes the position of the recording medium into account positioning error that occurs.
  • the use of the microprocessor also has the advantage that interventions such. B. user interventions, paper jam, scanner or paper errors, more than one concealed edge hole when scanning the recording medium or excessive target / actual position deviations of the recording medium over a predetermined partial length section of the recording medium, which result in an excess of tolerance of the positioning error will.
  • the monitoring ensures that the positioning error can be corrected despite the intervention.
  • Figure 1 shows a basic structure of a printing device 1, in which an edge-perforated continuous paper 10 is brought into a printing position DP in the area of a printing station 13 via a pin wheel 11 and a platen roller 12.
  • the transport of the continuous paper 10 is divided into two sections.
  • the continuous paper 10 is transported from the pin wheel 11 through pins 110 which engage in the peripheral perforation of the continuous paper 10 to a roller wedge 120.
  • the pin wheel 11 is connected via a first gear 111 to a drive pinion 140 of an electric motor 14, for example a stepping or direct current motor.
  • an electric motor 14 for example a stepping or direct current motor.
  • the continuous paper 10 is then transported in a second transport section by the platen roller 12 into the printing position DP.
  • the platen roller 12 is also driven by the electric motor 14 via the drive pinion 140 and a second gear 121 in the direction of the arrow shown.
  • the platen roller 12 with free-running drive rollers 15 in a paper guide trough 16 forms the roller wedge 120. Due to the rolling movement between the platen roller 12 and the free-running drive rollers 16, the continuous paper 10 is transported fricatively and on an optical scanner 17, a mechanical one Scanner 18 and the printing station 13 passed. While the mechanical scanner 18 determines whether there is paper between the platen roller 12 and the paper guide trough 16, the optical scanner 17 monitors the edge perforation of the continuous paper 10.
  • the edge-perforated continuous paper 10 must be guided into the roller wedge 120 as precisely as possible. This is particularly necessary because when the transport is taken over Continuous paper 10 by the platen roller 12, due to the frictional transport, can not take over the continuous paper 10 accurate position.
  • the pin wheel 11 which guides the continuous paper 10 into the roller wedge 120 by the constant engagement of the pins 110 in the edge perforation, also serves as a guide device for the perforated continuous paper 10 up to the roller wedge 120.
  • the guide device is to be designed, for example, as a guide channel with guide rails arranged on the side.
  • the pin wheel 11 In contrast to a mechanical tractor, in which the pin wheel 11 is also mechanically coupled to the electric motor 14 during the further transport of the continuous paper 10 through the platen roller 12, the pin wheel 11 according to FIG. 1 is driven by the drive of the platen roller 12 for this transport section decoupled.
  • Fricative transport of paper can lead to positioning errors that need to be corrected.
  • control arrangement 19 connected to the electric motor 14 and the optical scanner 17.
  • the control arrangement 19 for example in the form of a microprocessor, electronically simulates the behavior of the mechanical tractor (electronic tractor).
  • the optical scanner 17 registers a paper-hole change or a hole-paper change during the paper feed, it outputs a signal SI corresponding to the changes to the microprocessor 19.
  • the number of motor steps MS of the electric motor 14 is determined by the microprocessor 19, which the latter requires for the predetermined distance when the continuous paper 10 is fed.
  • a typical value for the motor step MS is e.g. B. 1/120 '' or 0.211 mm.
  • the microprocessor 19 performs position monitoring or evaluation of the continuous paper 10 in relation to the optical scanner 17 and adjusts the electric motor 14 as a function of a slip value determined during the position monitoring or evaluation.
  • the slip value results from the deviation between a determined actual position and a target position of the continuous paper 10.
  • the perforations in the edge of the continuous paper 10, which are scanned by the optical scanner, serve as a yardstick for the position monitoring or evaluation.
  • the slip value corresponds to the positioning error of the continuous paper 10 in the printing device 1, with the exception of a residual error that may still have to be taken into account.
  • FIG. 2 shows in a block diagram two functionally active and mutually influencing functional levels of the microprocessor 19, on which the position monitoring or evaluation of the continuous paper 10 is carried out in blocks in the printing device 1.
  • the procedures for position monitoring and evaluation are made up of a paper correction PK and a seizure control EUE.
  • the paper correction PK which consists of four function blocks, a reference point definition BPD, a correction value acquisition KWE, a correction version KA and a residual error detection RFE, is designed as a control loop for position monitoring and evaluation. This control loop is run through once for each block Bl ... Bm ... Bu of the continuous paper 10. After the reference point definition BPD, the slip value is determined in the correction value acquisition KWE, corrected in the correction execution KA and the residual error is determined in the residual error acquisition RFE. The residual error determined is only taken into account when monitoring or evaluating the position of the subsequent block.
  • each block Bl ... Bm ... Bu or partial length section of the continuous paper 10 must have a minimum length of three edge hole spacings or 9/6 ".
  • the correction value acquisition KWE of the paper correction PK refers to the next smaller divisible length of the block Bl ... Bm ... Bu or the partial length section, which increases the residual error determined during the residual error detection RFE
  • the blocks Bl ... Bm ... Bu or partial length sections that are greater than three edge hole spacings can be reduced as a limit to the smallest permissible length for the blocks Bl ... Bm ... Bu or the partial length sections.
  • the paper correction PK of the microprocessor 19 is started, for example, when printing begins, when the edge-punched continuous paper 10 is in the printing position DP according to FIG. 1 for printing on a first line.
  • a start position SP1 ... SPm ... SPu can additionally be specified for each block Bl ... Bm ... Bu, which serves as a reference position for position monitoring or evaluation.
  • FIG. 3 shows how Bm for any block the position monitoring or evaluation takes place in detail.
  • the start position SPm belonging to the block Bm is at a distance from a subsequent start position SPm + l of a subsequent block Bm + 1 by a pointer Z, the length of which corresponds to the length of the block Bl ... Bm ... Bu from the continuous paper 10.
  • the position monitoring or evaluation begins with the reference point definition BPD firstly determining a reference point BPm for the block Bm, for example a first block B1.
  • the determination of the reference point BPm takes place in that during the gradual further transport of the continuous paper 10 through the platen roller 12 within the block Bm an edge hole L1 ... Lv in the transport direction TR of the continuous paper 10 from the start position SPm with v as a further index variable for a predetermined distance the continuous paper 10 must be recognized. If this is not the case, for example for a first edge hole L1 closest to the start position SPm, because either a) the edge hole L1 does not belong to the edge hole L1 ...
  • the edge hole Lz is the last possible edge hole that can be used for the reference point definition BPD.
  • the edge hole Lz is, for example, the third to last edge hole. This is explained by the fact that at least one edge hole, in the present case, for example, a penultimate and last edge hole Lv-1 or Lv, is required for the correction value detection KWE.
  • the continuous paper 10 is from the starting position SPm by a number nl of motor steps MS des Electric motor 14 has been moved in the transport direction TR.
  • the reference point BPm corresponding to the number nl of motor steps MS coincides with the upper edge of the first edge hole L1.
  • the starting position SPm is defined as the reference position for the paper correction PK of the block Bm in relation to the reference point BPm by the number nl of motor steps MS.
  • the reference point BPm is now shifted by a target hole spacing SLA between two adjacent edge holes into the upper edge of a previous edge hole, in the present case it is the last edge hole Lv of a block Bm-1. However, it is also possible to let the reference point BPm coincide with the lower edge of the edge hole L1. Accordingly, the reference point BPm would then also be shifted by the target hole spacing SLA into the lower edge of the previous edge hole Lv of the block Bm-1.
  • a number n2 of motor steps MS resulting from the displacement is defined as normal in the reference point definition BPD for subsequent blocks Bm + 1 ... Bu of the continuous paper 10 and is stored by the microprocessor 19. When the standard is saved, the intervention monitoring EUE is simultaneously initialized and started in the microprocessor 19 and the correction value detection KWE of the paper correction PK is carried out.
  • the intervention monitoring EUE of the microprocessor 19 has the task of detecting interventions that occur during the transport of the continuous paper 10 to the printing station 13 into the printing position DP and to adapt the paper correction PK to these interventions.
  • interventions are registered by the intervention monitoring EUE during the correction value acquisition KWE, then, for example, in the event that, as a result of the intervention, the reference point BPm is located within a desired hole spacing SLA from the lower edge of the last edge hole Lv, and thereby a correction or compensation of the positioning error for the block Bm of the continuous paper 10 is no longer possible, the starting points StPv-1, StPv for the correction value detection KWE are shifted by a target hole spacing SLA. In addition, all by then Slip values determined during the correction value acquisition KWE marked as unusable. Interventions thus have the consequence that the residual error portion of the positioning error increases. According to the definition, there is always an intervention when the microprocessor 19 uses the optical scanner 17 to determine if the position monitoring or evaluation is carried out block-by-block in the deviation between the target position and the actual position of the continuous paper 10 in the printing device 1.
  • the correction value detection KWE of the paper correction PK thus begins that the continuous paper 10 has been moved in the transport direction TR from the start position SPm to a first starting point StPv-1 by a first target distance pointer SDZv-1.
  • the target distance pointer SDZv-l is composed of an actual distance pointer IDZv-l, a number nLD of motor steps MS for traversing an edge hole diameter LD and the number nl of motor steps MS for traveling the distance between the start position SPm and the reference point BPm together.
  • first starting point StPv-l and a first end point EPv-l there is a first, theoretical evaluation window BFv-l within which the upper edge of the penultimate edge hole Lv-1 is expected for the correction value acquisition KWE. If the optical scanner 17, which moves relative to the continuous paper 10, detects a paper-hole change associated with the edge hole Lv-l within the first evaluation window BFv-1, then the deviation between the target position and the actual position of the Continuous paper 10 determined a first slip value Sv-l.
  • the edge hole Lv-1 is marked as unusable for the correction value detection KWE.
  • the continuous paper 10 is moved from the respective current position by a second actual distance pointer IDZlv or IDZ2v into the trans- port direction TR up to a second starting point StPv.
  • the second starting point StPv is a second target distance pointer SDZv from the starting position SPm.
  • a second, theoretical evaluation window BFv is specified by the second starting point StPv and a second end point EPv, within which the upper edge of the last edge hole Lv is expected for the correction value detection KWE. If the optical scanner 17, which moves relative to the continuous paper 10, also detects a paper-hole change associated with the edge hole Lv within the second evaluation window BFv, the deviation between the target position and the actual position of the continuous paper 10 becomes a second slip value Sv determined.
  • the edge hole Lv is also marked as unusable for the correction value detection KWE. If this happens that both the penultimate edge hole Lv-1 and the last edge hole Lv are marked as unusable for the correction value detection KWE, the position of the continuous paper 10 in the printing device 1 is not corrected for the block Bm. In this case, the continuous paper 10 is transported further and at the point in time when the distance specified by the pointer Z has been traveled, the paper correction PK is carried out for a subsequent block Bm + 1.
  • the Correction execution KA started.
  • the slip value Sv-1, Sv determined for the block Bm in the correction value acquisition KWE is taken into account for the correction execution KA, and this, when the control circuit for the paper correction PK is run through at least twice, by the residual error determined in the residual error detection RFE for the previous block Bm -l updated.
  • the correction version KA consists of two independent levels. The correction is carried out logically on a first level. For this purpose, the pointer Z is changed by a correction step number resulting from the slip value Sv-1, Sv or the updated slip value Sv-1, Sv.
  • the correction is carried out physically on a second level.
  • an attempt is first made to incorporate the number of correction steps in whole or in part into the current feed order for the continuous paper 10. If this is not completely possible, an internal correction order is created and started immediately for the rest of the order at the end of the order. The last feed job is only acknowledged after the entire correction has been carried out. With the acknowledgment of the last feed order, the continuous paper 10 is then moved in the transport direction TR for the residual error detection RFE until the start position SPm + 1 for the block Bm + 1 the distance specified by the pointer Z has been traveled.
  • the residual error detection RFE for the block Bm is used simultaneously for the reference point definition BPD for the block Bm + 1, in which a reference point BPm + 1 is defined analogously to the reference point BPm for the reference point definition BPD for the block Bm.
  • the continuous paper 10 has been moved from the starting position SPm + 1 by a number n3 of motor steps MS of the electric motor 14 in the transport direction TR.
  • the reference point BPm + 1 corresponding to the number n3 of motor steps MS coincides with the upper edge of the first edge hole L1 of the block Bm + 1.
  • the reference point BPm + 1 is now shifted again by the target hole spacing SLA into the upper edge of the last edge hole Lv of the block Bm.
  • a number n4 of motor steps MS resulting from the displacement becomes a new standard for the reference point definition BPD for subsequent blocks Bm + 2 in the event that an intervention by the intervention monitoring EUE was found during the paper correction PK for the block Bm.
  • a residual error RFm is determined by subtracting the number n3 of motor steps MS between the start position SPm + 1 and the reference point BPm + 1 from the number nl of motor steps between the start position SPm and the reference point BPm.
  • the residual error RFm determined for the block Bm is taken into account in the paper correction PK for the block Bm + 1.
  • the process described with reference to FIG. 3 is repeated until the printing process has ended or until a single sheet is to be printed in the meantime.
  • Figure 4 is based on a pointer diagram for a section of the block Bm from an edge hole Lv-8 to the start position SPm + l of the block Bm + 1 at the lower edge of the last edge hole Lv of the block Bm, shown as an intervention E opposite to and in the transport direction TR of the continuous paper 10 from the intervention monitoring EUE of the microprocessor 19 recognized and taken into account in the paper correction PK of the microprocessor 19 according to FIG. 2.
  • the intervention monitoring EUE started by the paper correction PK according to the reference point definition BPD, the number of motor steps MS between two edge holes L1 ...
  • Lv for example an edge hole Lv-7, arranged continuously in the transport direction TR of the continuous paper 10 is determined by the target hole spacing SLA and an edge hole Lv-6, determined and evaluated.
  • the upper edge of the edge hole L1 ... Lv serves as a reference point.
  • the edge holes determined as hidden by the optical scanner 17 are suppressed or masked out analogously to the paper correction PK.
  • the intervention monitoring EUE is only ended or interrupted if the start position SP1 ... SPm ... SPu is redefined (e.g. after the end of paper) or if an internal order for the correction correction KA of the paper correction PK generates an opposite direction to the transport direction TR had to be (asynchronous backward movement).
  • the EUE intervention monitoring is reactivated by the paper correction PK.
  • it independently searches for the upper edge of the next marginal hole L1 ... Lv (synchronization) and begins monitoring interventions E.
  • the edge hole Lv-7 was not recognized by the optical scanner 17 and the search for the next paper-hole change associated with the edge hole Lv-6 has thus continued. If the paper-hole change recognized thereupon belongs to the edge hole Lv-6 and the distance covered corresponding to a determined number n5 of motor steps MS lies outside the permissible tolerance for the target hole spacing SLA, an intervention E has been carried out. If the number n5 is z. B. greater than a number nSLA of motor steps MS for the target hole spacing SLA, either at least one edge hole, for the present assumption the edge hole Lv-7, was not recognized by the optical scanner 17 (2nd case according to FIG. 4) or an intervention E is carried out in the opposite direction to the transport direction TR (1st case according to FIG. 4). In both cases, the intervention E is attributed to an intervention within a target hole spacing SLA. The same happens if the number n5 is smaller than the number nSLA of motor steps MS for the target hole spacing SLA due to an intervention E.
  • the starting points StPv-1, StPv for the correction value acquisition KWE move upwards by a target hole spacing SLA.
  • all slip values Sv-1, Sv determined up to that point are marked as unusable and the intervention monitoring EUE is continued.
  • FIGS. 5 to 13 show a flow chart of the paper correction PK carried out by the microprocessor 19 according to FIG. 2.
  • the reference point BPm for the block Bm of the continuous paper 10 is then determined in the reference point definition BPD.
  • the counter MSZ1 in a query cycle AZ1 of the flow chart via an entry point ESP1 up to a predetermined number nSLA of motor steps MS of the desired hole spacing SLA determines the number of motor steps MS by the electric motor 14, in which optical ones moving relative to the continuous paper 10 Scanner 17 detects a dark-light change DHW. If in the following we talk about an entry point, we mean the place where the secondary branch of the query cycle ends in the main branch.
  • the dark-light change DHW corresponds to the message from the optical scanner 17 that a paper-hole change of the continuous paper 10 has taken place at the optical scanner 17.
  • the optical scanner recognizes the expected dark-light change DHW
  • a check is made in a state P2 as to whether the detected dark-light change DHW belongs to the edge hole L2 ... Lz.
  • the edge hole L2 ... Lz that is recognized is examined as to whether it lies within a valid tolerance range for the edge hole diameter LD of the edge hole L2 ... Lz.
  • the tolerance range includes a minimum edge hole diameter LDmin deviating from the edge hole diameter LD and a maximum edge hole diameter LDmax.
  • a minimum-maximum query (min-max query) is carried out, in which the minimum and maximum edge hole diameter LDmin, LDmax with the diameter of the recognized edge hole L2 ... Lz is compared. While the Min query is carried out in state P2 of paper correction PK, the Max query is carried out in state P3 of paper correction PK.
  • the number of motor steps MS from the dark-light change DHW is first in a query cycle AZ3, AZ4 a next light-dark change HDW determined by the counter MSZ2.
  • the light-dark change corresponds to a hole-paper change of the continuous paper 10. If the expected light-dark change HDW takes place in the scanning cycle AZ3 at a number of motor steps MS corresponding to the counter reading of the counter MSZ2, which is smaller than that Number of motor steps for the minimum edge hole diameter LDmin, the edge hole L2 ... Lz is invalid.
  • An invalid edge hole can be present, for example, if the continuous paper 10 is torn in the area of the edge perforation at the relevant point.
  • the counter reading of the counter MSZ2 is added to the counter reading of the counter MSZ1 and the reference point definition BPD at the entry point ESP1 of the state P1 with the updated counter reading for the counter MSZ1 started again.
  • the query cycle AZ4 is run through an entry point ESP2 until the counter reading of the counter MSZ2 has a larger number of motor steps MS as the number of motor steps MS for the minimum edge hole diameter LDmin.
  • the search for the light / dark change HDW is continued in a scanning cycle AZ6 via an entry point ESP3.
  • the edge hole L4 ... Lz recognized in the state P1 has been found for the reference point definition BPD of the paper correction PK.
  • the current counter reading of the counter MSZ1 indicates a number nl of motor steps MS of the electric motor 14 according to FIG. 1, by means of which the distance from the starting position SPm of the block Bm in the paper correction PK to the reference point BPm at the upper edge of the edge hole L4 recognized in the state P1 ... Lz is specified.
  • the reference point BPm of the block Bm determined by the number nl is shifted into the upper edge of the last edge hole Lv from the previous block Bm-l. This is achieved in that the number nl of the motor steps MS for traveling the distance from the start position SPm of the block Bm in the paper correction PK to the upper edge of the recognized edge hole L4 ... Lz from the number nSLA of motor steps MS for the target hole spacing SLA is subtracted.
  • the resulting number n2 is stored by the microprocessor 19 and until further notice is considered normal for the paper correction PK.
  • the correction value acquisition KWE uses, at the end of the reference point definition BPD for the paper correction PK, the counter MSZ1 is preloaded with an actual distance pointer IDZv-l, the intervention monitoring EUE is started as shown in FIGS. 13 and 14 and the start values necessary for this are initialized.
  • the actual distance pointer IDZv-l indicates the number of motor steps MS that are necessary to move the continuous paper 10 from the position determined by the counter reading of the counter MSZ1 to a first starting point StPv-l for the correction value acquisition KWE relative to optical scanner 17 to move.
  • the actual distance pointer IDZv-l is determined by subtracting the counter reading of the counter MSZ1 indicating the current position of the continuous paper 10 relative to the optical scanner 17 from a target distance pointer SDZv-l.
  • the first starting point StPv-l defined by the target distance pointer SDZv-l defines with a first end point EPv-l the first theoretical evaluation window BFv-l, in which the penultimate edge hole Lv-l of the block Bm of the block selected for the correction value acquisition KWE Continuous paper 10 is suspected.
  • the edge hole Lv-1 selected for the correction value detection KWE should be located at the end of the block Bm of the continuous paper 10, if possible.
  • the deviation between the actual position and the target position of the continuous paper 10 is thus detected over the entire length of the block Bm except for the remaining residual error RFm.
  • the last edge hole Lv is also used for the correction value acquisition KWE.
  • the edge hole Lv provides a second slip value Sv, which with the residual error RFm forms a further correction value.
  • a target distance pointer SDZv is defined according to FIG. 3, by means of which a second starting point StPv of the block Bm is defined for the correction value detection KWE.
  • the second starting point StPv defines the second theoretical evaluation window BFv, in which the last edge hole Lv is assumed.
  • the target distance pointer SDZv-l, SDZv is a function of the length of the block Bm and of the theoretical evaluation window BFv-l, BFv.
  • all undesirable influences in the paper correction PK are taken into account. These influences include e.g. B. Device and sampling tolerances.
  • the continuous paper 10 is first moved in the transport direction TR according to FIG. 3 for the distance specified by the actual distance pointer IDZv-1.
  • a state P5 of the paper correction PK is then searched for a dark-light change DHW within the theoretical evaluation window BFv-1.
  • the counter reading of the counter MSZ1 is first reduced by 1 and the counter reading of the counter MSZ2 is increased by 1, as a result of which a motor step MS of the electric motor 14 is carried out.
  • the optical scanner 17 reports after this motor step MS no dark-light change DHW, the counter reading of the counter MSZ1 is reduced by 1, the counter reading of the counter MSZ2 is increased by 1 and the search for the dark-light change DHW is continued via an entry point ESP5 of the query cycle AZ8.
  • the search for the dark-light change DHW within the theoretical evaluation window BFv-l is unsuccessful if, for. B. the expected penultimate edge hole Lv-1 of the block Bm is covered or a dark-light change DHW occurred, but in which the determined slip value Sv-1 is greater than the permissible slip value Sth, the penultimate edge hole becomes in a sampling cycle AZ9 Lv-l marked as unusable and no slip value Sv-l stored in a memory cell SPZ2.
  • no slip value Sv-l is stored even if the counter reading of the counter MSZ2 is greater than the number nBFv-l of motor steps MS for the movement of the theoretical evaluation window BFv-l in the event of a dark-light change DHW.
  • the counter MSZ1 is loaded with an actual distance pointer IDZ2v and the second slip value Sv is determined via an entry point ESP8 of the query cycle AZ9 in the state P8 of the paper correction PK.
  • the actual distance pointer IDZ2v results from the fact that the sum of the target distance pointer SDZv-l and the number nBFv-l of motor steps MS for the theoretical evaluation window BFv-l is subtracted from the target distance pointer SDZv.
  • the actual distance pointer IDZ2v indicates the number of motor steps MS that are necessary to get from the first end point EPv-1 for the correction value acquisition KWE to the second start point StPv for the correction value acquisition KWE.
  • the counter status of the counter MSZ3 is first increased by 1 in a state P6 within a query cycle AZ10, AZ11, and the continuous paper 10 is thereby moved in the transport direction TR by one motor step MS of the electric motor 14. If a light-dark change HDW is then reported by the optical scanner 17 in the query cycle AZ10 and the counter reading of the counter MSZ3 corresponds to a number of motor steps MS which is smaller than the number nLDmin of motor steps MS of the minimum edge hole diameter LDmin, then the The counter reading of the counter MSZ2 is updated by the counter reading of the counter MSZ3 and the correction value acquisition KWE is continued via the entry point ESP5 of the state P5.
  • This query cycle AZ10 is run through until the counter reading of the counter MSZ2 indicates a number of motor steps MS which is greater than the number nBFv-1 of motor steps MS for the first theoretical evaluation window BFv-1. Then there is again no slip value Sv-1 and the sequence is continued after the counter MSZ1 has been loaded with the actual distance pointer IDZ2v via the entry point ESP8 in the state P8 of the paper correction PK.
  • the counter reading is in the query cycle AZ11 via an entry point ESP6 of the counter MSZ3 increased by 1 until the counter reading of the counter MSZ3 indicates a number of motor steps MS which is greater than the number nLDmin of motor steps MS of the minimum edge hole diameter LDmin.
  • the counter reading of the counter MSZ3 is first increased by 1 for the max query starting in a state P7 of the paper correction PK in a query cycle AZ12, AZ13, and the continuous paper 10 is thereby moved on by one motor step MS of the electric motor 14. If thereafter in the scan cycle AZ12 no light-dark change HDW is recognized by the optical scanner 17 and the counter reading of the counter MSZ3 corresponds to a number of motor steps MS which is greater than the number nLDmax of motor steps for the movement of the maximum edge hole diameter LDmax the counter reading of the counter MSZ2 is updated by the counter reading of the counter MSZ3 and the correction value acquisition KWE is continued via the entry point ESP5 of the state P5.
  • This query cycle AZ12 is continued until the counter reading of the counter MSZ2 again, as in the case of the Min query in state P6, indicates a number of motor steps MS which are greater than the number mBFv-1 of motor steps MS for the first theoretical evaluation window BFv-1 is. There is then again no slip value Sv-1 and the sequence is continued again after the counter MSZ1 has been loaded with the actual distance pointer IDZ2v via the entry point ESP8 in the state P8 of the paper correction PK.
  • the counter reading of the counter MSZ3 is in the query cycle AZ13 via an entry point ESP7 of the counter MSZ3 increased by 1 until the counter reading of the counter MSZ3 indicates a number of motor steps MS which is smaller than the number nLDmax of motor steps MS of the maximum edge hole diameter LDmax.
  • the stored value is the slip value Sv-l.
  • the Slip value Sv-l is by definition not less than the negative theoretical slip value -Sth and not greater than the positive theoretical slip value + Sth.
  • the sign of the slip value Sv-1 indicates the direction in which the continuous paper 10 must be corrected in the correction execution KA of the paper correction PK.
  • the counter MSZ1 is loaded with the actual distance pointer IDZlv.
  • the counter reading of the counter MSZ1 is now again, analogously to the state P4, in the event that the distance specified by the actual distance pointer IDZlv for the transport of the continuous paper 10 has not yet been traveled with each motor step MS of the electric motor 14 reduced by 1 in a query cycle AZ14 via the entry point ESP8.
  • the counter MSZ1 is loaded again with the theoretical slip value Sth and the counters MSZ2, MSZ3 with the starting value Initialized "0".
  • a dark-light change DHW is detected by the optical scanner 17 in the second theoretical evaluation window BFv.
  • the count of the counter MSZ1 is first reduced by 1 and the count of the counter MSZ2 is increased by 1 in a query cycle AZ15. If the query after the dark-light change DHW turns out negative and the counter reading of the counter MSZ2 is less than a number nBFv of motor steps MS for the second theoretical evaluation window BFv, the query cycle AZ15 is repeated through an entry point EF9.
  • the dark / light change DHW is determined by the optical scanner 17 in the state P9 of the paper correction PK, a min or max. Is determined in a state P10, P1l of the paper correction PK according to FIG. Query carried out. Instead of entry points ESP5, ESP6, ESP7 for query cycles AZ10 ... AZ13, entry points ESP9, ESP10, ESP11 are now used for query cycles AZ17 ... AZ20. If, at the end of the state P11, the counter reading of the counter MSZ1 is not less than the negative theoretical slip value -Sth and also not greater than the positive theoretical slip value + Sth, the counter reading is stored in the memory cell SPZ3. The stored value is the slip value Sv. The correction value acquisition KWE of the paper correction PK is ended with the two stored slip values Sv-1, Sv.
  • the counters MSZ0, MSZ1, MSZ2 and the memory cell SPZ1 specified in the state P0 are reinitialized with the start value specified there in a query cycle AZ22 and the reference point definition BPD for the via the entry point ESP1 subsequent block Bm + 1 started.
  • the position of the continuous paper 10 is corrected.
  • the correction value on which the correction is based results from the respective slip value Sv-1, Sv and a residual error RFm-1.
  • the residual error RFm-1 arises analogously to the residual error RFm from the paper correction of the continuous paper 10.
  • the residual error RFm-l is a correction quantity which was obtained from the paper correction PK of the block Bm-l.
  • the residual error RFm-1 determined there during the residual error detection RFE is stored for the paper correction PK of the block Bm, and the residual error RFm for the paper correction PK of the block Bm + 1 etc. is stored in the memory cell SPZ1.
  • the correction is first carried out on the logical level and the correction is prepared on the physical level.
  • the correction at the logical level is carried out by changing the pointer Z by the corresponding correction value.
  • the counter MSZ1 is loaded in state P12 with a correction pointer KZ1, which results from the difference between the correction pointer KZ and the current counter reading of the counter MSZ3.
  • the correction pointer KZ1 indicates how many motor steps MS the continuous paper 10 still has to be moved from its current position so that the physical correction begins at the point in time at which the distance specified by the correction pointer KZ has been traveled.
  • a state P15 of the paper correction PK the continuous paper 10 according to FIG. 3 is moved in the transport direction TR until the end of the block Bm at the start position SPm + l is reached for the subsequent block Bm + 1.
  • the counter status of the counter MSZO preloaded with the pointer Z is reduced by 1, as in the query cycle AZ21 of the state P12, in a query cycle AZ24 via an entry point ESP15 until the counter MSZO indicates the value 0.
  • the pointer Z and the target distance pointer SDZv-1 are reset.
  • the reference point definition BPD for the block Bm + 1 is first carried out in states P16, P17, P18 of the paper correction PK.
  • the reference point definition BPD differs from the reference point definition BPD in the states P1, P2, P3 only in the numbering of the query cycles and the entry points. Instead of the polling cycles AZ1 ... AZ6 and the entry points ESP1, ESP2, ESP3, there are now polling cycles AZ25 ... AZ30 and entry points ESP16, ESP17, ESP18.
  • the counter reading of the counter MSZ1 indicates a number n3 of motor steps MS of the electric motor 14, by means of which the distance from the starting position SPm + l of the paper correction PK for the block Bm + 1 to the reference point BPm +1 is indicated on the upper edge of the edge hole L1 ... Lz recognized in state P16.
  • the reference point BPm + 1 of the block Bm + 1 determined by the number n3 is shifted into the upper edge of the last edge hole Lv from the previous block Bm. This is achieved by subtracting the number n3 of motor steps MS from the number nSLA of motor steps for the target hole spacing SLA.
  • the resulting number nU is subtracted from the number n2 to determine the residual error RFm. So that the residual error RFm can be taken into account by the continuous paper 10 in the paper correction PK of the block Bm + 1, it is temporarily stored in the memory cell SPZ1 and the residual error RFm-1 already stored is thereby deleted.
  • the residual error detection RFE of the paper correction PK is ended in that a query is made in a state P19 as to whether there has been an intervention within the reference point definition BPD for the block Bm + 1 and within the paper correction PK for the block Bm.
  • the two queries are executed one after the other in the order mentioned.
  • the memory cell SPZ1 in which the previously determined residual error RFm is stored is deleted in a query cycle AZ31 and the query for the intervention within the paper correction PK is entered via an entry point ESP19 carried out.
  • this query is carried out directly via the entry point ESP19.
  • the number n2 of motor steps MS determined in the reference point definition BPD for the block Bm from the starting position SPm to the upper edge of the last edge hole Lv from the block Bm-1 is no longer considered in a query cycle AZ32 Normally used, but the number n4 determined for the reference point definition BPD for the block Bm + 1.
  • the paper correction PK of the block Bm + 1 is then continued by the continuous paper 10 via an entry point ESP20 and the entry point ESP4. However, if there has been no intervention within the paper correction PK, the position monitoring or evaluation of the block Bm + 1 is carried out directly via the entry points ESP20, ESP4.
  • FIGS. 14 and 15 show a flow chart of the intervention monitoring EUE.
  • a counter MSZ4 is initially initialized with the counter content of the counter MSZ2 and a counter MSZ5 with the start value "0".
  • the intervention detection for the block Bm of the continuous paper is then carried out 10 started.
  • the counter MSZ4 determines the number of motor steps MS from the electric motor 14 in a query cycle AZ33 of the flow chart for the intervention monitoring EUE via an entry point ESP21 until the optical scanner 17 detects a dark-light change DHW.
  • the dark-light change DHW corresponds to the message from the optical scanner 17 that a paper-hole change of the continuous paper 10 has taken place at the optical scanner 17.
  • the optical scanner 17 does not report a dark-light change DHW for the predetermined number nSLA of motor steps MS, which corresponds to the target hole spacing SLA, according to a query cycle AZ34, then, as in the paper correction PK in the state P1, a hidden first edge hole L1.
  • This hidden first edge hole is then hidden by subtracting the number nSLA of motor steps MS for the target hole distance SLA from the current content of the counter MSZ4 and then continuing the search for a valid edge hole L2 ... Lv.
  • the optical scanner 17 finally recognizes the expected dark-light change DHW, for example after it has run through the query cycle AZ34 several times in the state Q1, it is checked in a state Q2 whether the detected dark-light change DHW to the edge hole L2 ... Lv heard. In this check, it is examined for the identified edge hole L2 ... Lv whether it lies within the valid tolerance range for the edge hole diameter LD of the edge hole L2 ... Lv.
  • the tolerance range includes the minimum edge hole diameter LDmin deviating from the edge hole diameter LD and the maximum edge hole diameter LDmax.
  • a min-max query is carried out, as in the paper correction PK, in which the minimum and maximum edge hole diameter LDmin, LDmax with the diameter of the recognized edge hole L2 ... Lv is compared. While the min query takes place in state Q2, the max query is carried out in state Q3 of the intervention monitoring EUE.
  • the number of motor steps MS from the dark-light change DHW to a next light-dark change HDW is first determined by the counter MSZ5 in a query cycle AZ35, AZ36. If the expected light-dark change HDW takes place in the scanning cycle AZ35 with a number of motor steps MS corresponding to the counter reading of the counter MSZ5, which is smaller than the number of motor steps MS for the movement of the minimum edge hole diameter LDmin, then the edge hole L2 ... Lv invalid. So that the search for an edge hole L3 ... Lv can continue from the point in question via the entry point ESP21, the counter reading of the counter MSZ4 is updated by the counter reading of the counter MSZ5.
  • the query cycle AZ36 is run through an entry point ESP22 until the counter reading of the counter MSZ4 is a greater number of motor steps MS than has the number of motor steps MS for traversing the minimum edge hole diameter LDmin.
  • the query cycle AZ36 is run through an entry point ESP22 until the counter reading of the counter MSZ4 is a greater number of motor steps MS than has the number of motor steps MS for traversing the minimum edge hole diameter LDmin.
  • the query cycle AZ36 is run through an entry point ESP22 until the counter reading of the counter MSZ4 is a greater number of motor steps MS than has the number of motor steps MS for traversing the minimum edge hole diameter LDmin.
  • the motor steps MS are first counted up by the counter MSZ4 until the expected light / dark change HDW.
  • the edge hole L2 ... Lv is again invalid. So that the search for the next edge hole L3 ... Lv from the the relevant point can continue, the counter reading of the counter MSZ4 is updated by the counter reading of the counter MSZ5.
  • the search for the light / dark change HDW is continued in the scanning cycle AZ38 via an entry point ESP23.
  • the current counter reading of the counter MSZ4 indicates the number n5 of motor steps MS of the electric motor 14 which are necessary to get from the top edge of any edge hole to the top edge of the subsequent edge hole.
  • the question of whether the intervention took place during the form correction PK can now be answered by comparing the number n5 of motor steps MS with a number nSLA of motor steps for the target hole spacing SLA in a state Q4 of the intervention monitoring EUE.
  • the meter reading of the meter MSZ5 is loaded into the meter MSZ4 in a query cycle AZ39 and the intervention monitoring EUE is continued via the entry point ESP21 in state Q1.
  • the size of the intervention E is now determined in that the Intervention is attributed to an intervention within the target hole spacing SLA and the number nSLA of motor steps MS for moving the target hole spacing SLA is subtracted from the resulting number n6.
  • the number n6 is subtracted from the number nSLA so that the detected intervention E can also be taken into account for the paper correction PK.
  • the result is the value W by which the target distance pointer SDZv-l for the paper correction PK is reduced.
  • the counter status of the counter MSZ5 is loaded into the counter MSZ4 and the counter MSZ5 is initialized with the start value "0".

Landscapes

  • Handling Of Sheets (AREA)
  • Controlling Sheets Or Webs (AREA)

Abstract

Dans l'imprimante (1) présentée, lors du positionnement de la bande de papier continue (10) à perforation marginale dans une position d'impression (DP) par rapport à une station d'impression (13), une erreur de positionnement se produisant est corrigée électroniquement. Pour faire cette correction, des perforations (L1...Lv) marginales se trouvant sur la bande de papier continue sont analysées et l'erreur de positionnement est déterminée pour un bloc (B1...Bm...Bu) de la bande de papier continue (10). Pour chaque bloc (B1...Bm...Bu), l'erreur de positionnement se compose d'au moins une valeur de glissement (Sv-1, Sv) et d'une valeur résiduelle (RF1...RFm...RFu). Tandis que la valeur de glissement (Sv-1, Sv) est corrigée directement pour un bloc (Bm) de papier, une erreur résiduelle (RFm) est prise en considération lors de la correction de l'erreur de positionnement pour un bloc suivant (Bm+1). En outre, en plus de la correction électronique de l'erreur de positionnement déterminée par le bloc (B1...Bm...Bu), le processus de positionnement lui-même est également surveillé pour détecter des interférences (E). Si, par exemple, pendant le positionnement du bloc individuel (Bm) une interférence (E) est constatée, l'erreur de positionnement est déterminée de nouveau.

Claims (8)

  1. Procédé pour le positionnement de supports d'impression continus (10) dans des dispositifs d'impression (1), les supports d'impression continus comportant des éléments (L1...Lz...Lv) pouvant être détectés et agencés les uns par rapport aux autres selon des distances prédéfinies, éléments qui, lors du mouvement du support d'impression continu (10), sont guidés devant des dispositifs de détection (17) engendrant un signal de détection (SI), des moyens étant prévus qui saisissent les résultats de détection et qui, par comparaison avec des valeurs de référence, corrigent des erreurs de position apparues, par le réglage du dispositif de transport (11,12) pour le support d'impression continu (10), entraîné par moteur électrique,
    caractérisé en ce que
    a) en plus de l'enregistrement des éléments (L1...Lz...Lv) pouvant être détectés sur le support d'impression continu (10), les pas d'entraînement de l'entraînement (MS) par moteur électrique sont également enregistrés ;
    b) plusieurs éléments (L1...Lz...Lv) pouvant être détectés sont réunis en un ensemble (B1...Bm...Bu) et, en relation avec ceci, les réglages de correction de la position du support d'impression continu (10) sont effectués par ensembles ;
    c) la correction des erreurs de position apparues est réalisée, de façon quantifiée, à la fin d'un ensemble actuel (B1...Bm...Bu), de sorte qu'une erreur résiduelle (RFm) peut subsister, erreur résiduelle qui, munie d'un signe, est prise en compte dans le processus de correction suivant.
  2. Procédé selon la revendication 1,
    caractérisé en ce que le réglage par ensembles est effectué de la façon suivante :
    a) pour la détermination d'une position de référence (SP1...SPm...SPu) pour des ensembles (B1...Bm...Bu) du support d'impression (10), on détermine, au début du réglage de la position du support d'impression (10), pour chaque ensemble (B1...Bm...Bu), la position d'au moins un élément (L1...Lz) pouvant être détecté, par rapport à la position du dispositif de détection (17) ;
    b) pour la recherche d'au moins une variation des positions prescrite/effective (Sv-1,Sv) engendrant l'erreur de positionnement du support d'impression (10) par rapport à la position de référence (SP1...SPm...SPu) des ensembles (B1...Bm...Bu), on détermine la position d'au moins un élément (Lv-1,Lv) pouvant être détecté, par rapport à la position du dispositif de détection (17) ;
    c) pour la correction de la position du support d'impression (10), on recherche la position du support d'impression (10) pour les ensembles (B1...Bm...Bu) en relation avec la variation des positions prescrite/effective (Sv-1,Sv) du support d'impression (10) ;
    d) pour la vérification, la détermination et la prise en compte d'interventions (E), par exemple des interventions de l'utilisateur, une accumulation de papier, des défauts de détecteur ou de papier, on détermine la position de deux éléments (L1...Lv) pouvant être détectés des ensembles (B1...Bm...Bu) du support d'impression (10), par rapport à la position du dispositif de détection (17), de façon cyclique, par une comparaison des valeurs prescrite/effective de la distance à chaque fois détectée, lors du positionnement du support d'impression (10) dans le dispositif d'impression (1), et on déplace la position de référence (SP1...SPm...SPu) des ensembles (B1...Bm...Bu), lors du réglage de la position du support d'impression (10).
  3. Procédé selon la revendication 2,
    caractérisé en ce que
    a) au début du réglage par ensembles de la position du support d'impression (10), à l'intérieur de la distance prédéfinie (SLA) des éléments (L1...Lz) pouvant être détectés, en commençant par un premier élément (L1) pouvant être détecté, on recherche un point de référence (BP1...BPm...BPu) qui indique la position de l'élément (L1...Lz) pouvant être détecté, par rapport à la position du dispositif de détection (17) ;
    b) à partir du point de référence (BP1...BPm...BPu) de l'élément (L1...Lz), pouvant être détecté et reconnu par le dispositif de détection (17), à l'intérieur de la distance prédéfinie (SLA), on recherche si une zone de tolérance (LDmin, LDmax) de l'élément (L1...Lz) pouvant être détecté, n'est pas atteinte ou est dépassée ;
    c) en dépendance du résultat de recherche, on répète les étapes a) et b) du procédé pour l'ensemble (B1...Bm...Bu) jusqu'à ce que la zone de tolérance (LDmin, LDmax) pour les éléments (L1...Lz) pouvant être détectés, est atteinte ou n'est plus dépassée ;
    d) du début du réglage par ensembles de la position du support d'impression (10) jusqu'au point de référence (BP1...BPm...BPu), on recherche le déplacement relatif du support d'impression (10) par rapport au dispositif de détection (17), et dans le cas où la zone de tolérance (LDmin, LDmax) pour les éléments (L1...Lz) pouvant être détectés est atteinte ou n'est plus dépassée, on définit la position de référence (SP1...SPm...SPu) par rapport au point de référence (BP1...BPm...BPu).
  4. Procédé selon la revendication 3,
    caractérisé en ce que le bord supérieur de l'élément (L1...Lz...Lv) pouvant être détecté est défini comme point de référence (BP1...BPm...BPu).
  5. Procédé selon l'une quelconque des revendications 2 à 4,
    caractérisé en ce que
    a) pour rechercher la variation des positions prescrite/ effective (Sv-1, Sv) , le support d'impression (10), est déplacé, relativement au dispositif de détection (17), d'une valeur prédéfinie (SDZv-1,SDZv) de la position de référence (SP1...SPm...SPu) jusqu'à un point de départ (StPv-1,StPv) de fenêtres théoriques d'évaluation (BFv-1, BFv), selon une direction de transport (TR) du support d'impression (10) ;
    b) un élément (Lv-1,Lv) pouvant être détecté est recherché à l'intérieur des fenêtres théoriques d'évaluation (BFv-1,BFv), en ce que le support d'impression (10) est déplacé, en direction de transport (TR), relativement au dispositif de détection (17), du point de départ (StPv-1,StPv) jusqu'à un point final (EPv-1,EPv)
    c) le déplacement relatif du support d'impression (10) par rapport au dispositif de détection (17), recherché dans la fenêtre d'évaluation (BFv-1,BFv) jusqu'à la reconnaissance de l'élément (Lv-1, Lv) pouvant être détecté, est comparé à une variation théorique (Sth) des positions prescrite/effective.
  6. Procédé selon l'une des revendications 2 à 5,
    caractérisé en ce que, lorsqu'il existe plusieurs variations de positions prescrite/effective (Sv-1,Sv), on utilise, pour corriger la position du support d'impression (10), une variation de positions prescrite/effective (Sv) recherchée pour un dernier élément (Lv) pouvant être détecté des ensembles (B1...Bm...Bu).
  7. Procédé selon l'une des revendications 2 à 6,
    caractérisé en ce qu'une erreur résiduelle (RF1...RFm...RFu) des ensembles (B1...Bm...Bn), engendrant l'erreur de position et non prise en compte dans la variation de positions prescrite/effective (Sv-1,Sv), est rajoutée à ladite variation de positions prescrite/effective (Sv-1,Sv), lors de la correction de la position du support d'impression (10).
  8. Procédé selon la revendication 7,
    caractérisé en ce que l'erreur résiduelle (RFm) d'un ensemble (Bm) est recherchée par comparaison entre le déplacement relatif du support d'impression (10) par rapport au dispositif de détection (17), pour un ensemble suivant (Bm+1), d'une position de référence (SPm+1) vers un point de référence (BPm, BPm+1) des éléments (L1...Lz...Lv) pouvant être détectés, et le déplacement relatif du support d'impression (10) par rapport au dispositif de détection (17), pour l'ensemble (Bm), d'une position de référence (SPm) vers un point de référence (BPm-l,BPm) des éléments (L1...Lz...Lv) pouvant être détectés.
EP91905093A 1990-03-16 1991-03-06 Procede pour le positionnement d'un support d'enregistrement en bandes dans une imprimante Expired - Lifetime EP0519945B1 (fr)

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EP90105030 1990-03-16

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JP (1) JPH05505353A (fr)
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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5410389A (en) * 1993-08-30 1995-04-25 Xerox Corporation Neutral side force belt support system
JPH09300749A (ja) * 1996-05-17 1997-11-25 Star Micronics Co Ltd 印字装置の用紙頭出し装置
US5765481A (en) * 1997-03-11 1998-06-16 Gerber Scientific Products, Inc. Apparatus and method for working on a length of web material
US6633319B1 (en) * 1998-03-30 2003-10-14 Minolta Co., Ltd. Image recording apparatus
US8908197B2 (en) * 2013-02-22 2014-12-09 System Development Inc. System and method for determining top of form
JP6314551B2 (ja) * 2014-03-07 2018-04-25 セイコーエプソン株式会社 印刷装置、印刷方法、及び印刷システム

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2258546C2 (de) * 1972-11-29 1982-10-21 Siemens AG, 1000 Berlin und 8000 München Einrichtung zur Papiervorschubüberwachung bei Druckern
JPS58212537A (ja) * 1982-05-31 1983-12-10 Toshiba Corp 用紙搬送装置
US4485949A (en) * 1982-08-23 1984-12-04 Xerox Corporation Controlled frictional feeding of computer forms web
US4734868A (en) * 1986-07-21 1988-03-29 Vfn Technology Inc. Precision paper transport system
US4807790A (en) * 1986-10-10 1989-02-28 Kentaro Ushioda Paper feeding method and apparatus
JPS63315450A (ja) * 1987-06-17 1988-12-23 Seikosha Co Ltd ペ−パ−トラクタ
JPH0711992Y2 (ja) * 1987-07-15 1995-03-22 旭光学工業株式会社 連続紙の印字制御装置
JP2808289B2 (ja) * 1988-11-14 1998-10-08 旭光学工業株式会社 プリンターの連続用紙搬送装置
US5072414A (en) * 1989-07-31 1991-12-10 Accuweb, Inc. Ultrasonic web edge detection method and apparatus
DE3939507C1 (fr) * 1989-11-27 1991-02-21 Mannesmann Ag, 4000 Duesseldorf, De
US5043904A (en) * 1990-04-27 1991-08-27 Web Printing Controls Co., Inc. Web handling apparatus monitoring system with user defined outputs

Also Published As

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US5244293A (en) 1993-09-14
DE59100639D1 (de) 1994-01-05
EP0519945A1 (fr) 1992-12-30
JPH05505353A (ja) 1993-08-12
WO1991013763A1 (fr) 1991-09-19

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