EP0341787A2 - Dispositif pour indiquer la position d'une tranche d'un support de données en forme de feuille - Google Patents

Dispositif pour indiquer la position d'une tranche d'un support de données en forme de feuille Download PDF

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Publication number
EP0341787A2
EP0341787A2 EP89201156A EP89201156A EP0341787A2 EP 0341787 A2 EP0341787 A2 EP 0341787A2 EP 89201156 A EP89201156 A EP 89201156A EP 89201156 A EP89201156 A EP 89201156A EP 0341787 A2 EP0341787 A2 EP 0341787A2
Authority
EP
European Patent Office
Prior art keywords
flap
sensor
slide
data carrier
arrangement according
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.)
Withdrawn
Application number
EP89201156A
Other languages
German (de)
English (en)
Other versions
EP0341787A3 (fr
Inventor
Helmut Eicher
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.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Patentverwaltung GmbH
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 Philips Patentverwaltung GmbH, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Patentverwaltung GmbH
Publication of EP0341787A2 publication Critical patent/EP0341787A2/fr
Publication of EP0341787A3 publication Critical patent/EP0341787A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/26—Registering devices
    • B41J13/28—Front lays, stops, or gauges

Definitions

  • the invention relates to an arrangement for indicating the position of an edge of a sheet-shaped data carrier which is between two guide plates of a writing instrument, e.g. a dot matrix printer is transported through.
  • An arrangement of the type mentioned above is e.g. made known by DE-OS 35 35 964.
  • the known type shows a feed device for sheet-shaped data carriers to be fed into a booking machine.
  • This device has an input support for the data carriers and feeler levers, which are arranged in a line perpendicular to the feed direction and recognize the alignment position of the front edge of an inserted data carrier.
  • signaling switches are actuated via actuating arms, the simultaneous actuation of which triggers the pull-in process.
  • the primary aim here is to control the position of the data carriers of various widths with sufficient accuracy.
  • an inner, a middle and an outer sensor lever are provided, which cooperate in a certain way with assigned signaling switches.
  • a design with such a mechanical scanning results in a relatively large switching hysteresis, a relatively large adjustment effort and requires a relatively large amount of space.
  • the invention has for its object to improve an arrangement of the type mentioned in view of the disadvantages mentioned and to increase the accuracy of the display.
  • This object is achieved in that a protruding into the baffle, in the direction of transport the disk against the force of a flap spring mounted flap and a stationary sensor are provided, and that the sensor and the bearing end of the flap are arranged and matched to one another in such a way that the sensor can be activated when the flap is moved by the data medium is.
  • the sensor is activated during the first movement of the swivel end of the flap, since this swivel end is in the sensor's immediate area of effect.
  • the sensor can be, for example, a Hall element which is in the effective range of a permanent magnet arranged at the swiveling end of the flap, the Hall element only being in the effective range of the magnetic field in the rest position of the arrangement with the flap at right angles to the guide plates.
  • the sensor is activated as soon as the swiveling end of the flap is moved relative to the sensor. This movement can either be a rotary movement of the flap or a parallel movement taking place in the transport direction.
  • the flap can be mounted so that it can rotate in a stationary manner relative to the data carrier guided between the guide plates.
  • the flap can, for example, be pivotably arranged in a housing fastened to the upper guide plate, in which the sensor is also located.
  • the edge of the data carrier for example a single sheet of paper or a set of forms, touches the flap in this arrangement, the flap pivots up so that the paper slides under the flap.
  • the sensor is through the Rotation of the swivel end of the flap has been activated. This design depends on the thickness of the data carrier.
  • the senor is activated more quickly than in the case of a thin single sheet, since for the same rotary movement of the flap the single sheet has to travel a greater distance in the transport direction than from the form set.
  • a complete independence from the thickness of the data carrier can be achieved in a preferred embodiment of the invention in that the flap is mounted on a slide guided in the transport direction against the force of a slide spring between two stops and that the flap and slide spring are dimensioned such that the flap is closed when the slide moves to the end stop and folds up when the slide end position is reached and the slide is pulled back from the slide spring to the starting position.
  • the flap is not swung up, but is moved together with the carriage in the direction of transport. This movement is therefore independent of the thickness of the data carrier.
  • the flap pivots up so that the data carrier passes under the flap that has been swung up.
  • the slide including the flap that is folded up, is retracted in the exit direction against the transport direction.
  • the independence from the thickness of the data carrier is thus achieved by mechanically decoupling the two movements triggered one after the other by the data carrier passing through.
  • a simple design and storage of the flap which is less susceptible to faults results, for example, from the fact that it is articulated on the upper side of the slide by a hinge.
  • the arrangement shown in the figures shows a lower guide plate 10 and an upper guide plate 11, between which a data carrier 13 is passed in the transport direction 12.
  • the data carrier 13 can be, for example, a single sheet or a set of forms consisting of several sheets.
  • the front edge of the data carrier 13 is designated by 14.
  • Both baffles 10 and 11 form an intermediate space 15 between them and are each provided with a recess 16, 17.
  • a housing indicated by 18 is attached, which with slot-like guide slots 19 is provided.
  • a slide 21 slides in the transport direction 12 and is slidably arranged in the transport direction 12.
  • the slide 21 carries on its front side a flap 24 which is pivoted in the direction 23 via a hinge 22 and which, in the idle state according to FIG Recesses 16 and 17 of the guide plates 10 and 11 protrude.
  • the bearing end of the flap 24 carries a permanent magnet 25, the magnetic field of which is designated 26.
  • a stationary Hall element designed as a sensor, is provided, which in the idle state according to FIG. 1 lies in the effective range of the magnetic field 26.
  • the slide 21 is biased by a slide spring 28 and the flap 24 by a flap spring 29.
  • the pretension of the flap spring 29 is greater than the slide spring 28 responsible for the retraction of the slide 21.
  • the guide slots 19 form stops 30 in the rest position and stops 31 in the end position of the slide 21 seen in the transport direction 12.
  • the magnet 25 stands vertically below the Hall element 27, which only switches on in this magnet position.
  • Carriage 21 and flap 24 are pulled by springs 28, 29 to the respective stop. 2
  • the slide 21 has reached its end position, the pins 20 striking against the stops 31 of the slide guides 19.
  • This position is achieved in that the front edge 14 of the data carrier abuts the flap 24 and thereby takes the carriage 21 and the flap 24 with it in synchronization with the advance of the front edge of the data carrier 13.
  • the flap 24 does not open due to the greater pretension of the flap spring 29.
  • the first time the carriage moves the Switching magnet 25 from the working area of the Hall element 27, which switches off at a defined point, regardless of the thickness of the data carrier 13.
  • the flap 24 opens due to the data carrier 13 moving further in the direction 12.
  • the switching magnet 25 is also brought into an inclined position (see FIG. 3).
  • the flap 24 raised by the swiveling is no longer held by the leading edge 14 of the paper, so that the slide spring 28 pulls the slide 21 together with the opened flap 24 back to the stops 30.
  • the switching magnet 25 is also angled due to the inclined position of the flap, the Hall element 27 is not switched on in this inclined position (see FIG. 4), as a result of which the presence of a data carrier remains indicated.
  • the swung-up flap 24 rests with an edge 24a on the data carrier 13 as long as it is present.
  • the angle 32 formed by the swung-up flap 24 must be so large that the magnetic field 26 of the inclined magnet 25 cannot cause the Hall element 27 to be switched on.
  • the flap 24 which projects into the intermediate space 15, ie into the two cutouts 16, 17 of the guide plates 10, 11, must have a sufficient length.
  • the flap 24 After passing through the data carrier 13 according to FIG. 5, the flap 24 drops suddenly, accelerated by the tensile force of the flap spring 29, and thus brings the switching magnet 25 back into the vertical position with respect to the Hall element 27.
  • the Hall element 27 switches through without bounce, since mechanical bouncing when struck the flap 24 against the carriage 21, because of the too small change in angle, the Hall element 27 can no longer turn off.
  • Fig. 6 shows a variant of Fig. 1 to 5, according to which the flap 24 is provided with an elbow joint 33, so that with a backward movement of the data carrier 13 in the direction 34 on the one hand the paper path is not blocked and on the other hand the backward movement cannot trigger a switching function. With such a backward movement, the end 24b is then bent in the direction 35.
  • FIG. 7 schematically shows the effects of a thin and a thick data carrier 36, 37 on the position of the flap 24 and thus on the switching time of the Hall element 27. It is assumed that the flap 24 at the pivot point 38 is stationary with respect to the data carriers 36 to be transported , 37 is stored. It can be seen that to achieve the same angle of rotation 39, a short path 40 is required for the thick form 37 and a longer path 41 is required for the thin single sheet 36. However, if the flap 24 is not fixed in place, but, as shown in FIGS. 1 to 6, on the carriage 21 which is movable in the transport direction, such a dependence on the paper thickness no longer occurs.
  • the design according to the invention enables simple and precise adjustment.
  • the sensor 27 With a certain movement of the flap (either as a rotary movement in the case of stationary storage or as a parallel movement in the case of storage on a slide), the sensor 27 is activated, so that e.g. a switching process is triggered. With one and the same device, this activation always takes place with the same movement of the flap. After the activation of the sensor 27, the steps are counted during the further transport of the data carrier 13 by which the data carrier must be transported further until the first printing position is reached.
  • the switching time for each device depends on several different factors, for example on the respective spatial assignment between the sensor 27 and the end of the flap 24 or on the field strength of the magnet 25. For each device there is one however, the switching time is always constant.
  • the transport route from the switching time to the first printing position is also subject to tolerances, e.g. due to the position of the cut-out for the housing 18 in the upper guide plate 11.

Landscapes

  • Controlling Sheets Or Webs (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
EP19890201156 1988-05-13 1989-05-05 Dispositif pour indiquer la position d'une tranche d'un support de données en forme de feuille Withdrawn EP0341787A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3816367A DE3816367A1 (de) 1988-05-13 1988-05-13 Anordnung zur positionsanzeige einer kante eines blattfoermigen datentraegers
DE3816367 1988-05-13

Publications (2)

Publication Number Publication Date
EP0341787A2 true EP0341787A2 (fr) 1989-11-15
EP0341787A3 EP0341787A3 (fr) 1990-09-19

Family

ID=6354316

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890201156 Withdrawn EP0341787A3 (fr) 1988-05-13 1989-05-05 Dispositif pour indiquer la position d'une tranche d'un support de données en forme de feuille

Country Status (4)

Country Link
US (1) US4943174A (fr)
EP (1) EP0341787A3 (fr)
JP (1) JPH01320188A (fr)
DE (1) DE3816367A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992002370A1 (fr) * 1990-08-10 1992-02-20 Siemens Nixdorf Informationssysteme Ag Dispositif d'impression a tete d'impression reglable

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD333673S (en) 1991-01-16 1993-03-02 Riggs Barbara R Margin setter for use with a typewriter or printer
JP3824909B2 (ja) * 2001-11-09 2006-09-20 株式会社リコー 給紙装置およびシート搬送装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH466335A (fr) * 1967-11-27 1968-12-15 Genevoise Degrossissage D Or Dispositif de commande de l'unité de timbrage d'une machine à timbrer
JPS5340453B2 (fr) * 1973-06-26 1978-10-27
US3888478A (en) * 1974-05-23 1975-06-10 Sperry Rand Corp Sheet limiter
JPS606856B2 (ja) * 1979-05-29 1985-02-21 インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション 柔軟性のあるシ−ト状材料の整置装置
DE2943241C2 (de) * 1979-10-23 1982-05-13 Mannesmann AG, 4000 Düsseldorf Papierendeschaltvorrichtung für einen Drucker
JPS59179386A (ja) * 1983-03-31 1984-10-11 Fujitsu Ltd 用紙残量検知機構
US4579056A (en) * 1984-01-20 1986-04-01 Varitronic Systems, Inc. Printing mechanism
JPS6282065A (ja) * 1985-10-07 1987-04-15 Seikosha Co Ltd プリンタの紙検出装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992002370A1 (fr) * 1990-08-10 1992-02-20 Siemens Nixdorf Informationssysteme Ag Dispositif d'impression a tete d'impression reglable
US5360276A (en) * 1990-08-10 1994-11-01 Siemens Nixdorf Informationssysteme Aktiengesellschaft Printing device with adjustable printing head gap

Also Published As

Publication number Publication date
US4943174A (en) 1990-07-24
EP0341787A3 (fr) 1990-09-19
DE3816367A1 (de) 1989-11-23
JPH01320188A (ja) 1989-12-26

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