EP0341786A2 - Dispositif pour indiquer la position d'un tranche d'un support de données en forme de feuille - Google Patents

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

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Publication number
EP0341786A2
EP0341786A2 EP89201155A EP89201155A EP0341786A2 EP 0341786 A2 EP0341786 A2 EP 0341786A2 EP 89201155 A EP89201155 A EP 89201155A EP 89201155 A EP89201155 A EP 89201155A EP 0341786 A2 EP0341786 A2 EP 0341786A2
Authority
EP
European Patent Office
Prior art keywords
guide plate
band
upper guide
edge
arrangement
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Withdrawn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
EP89201155A
Other languages
German (de)
English (en)
Other versions
EP0341786A3 (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 EP0341786A2 publication Critical patent/EP0341786A2/fr
Publication of EP0341786A3 publication Critical patent/EP0341786A3/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Withdrawn legal-status Critical Current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 located between a lower and an upper guide plate of a printing unit, 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 detect 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.
  • Such mechanical scanning by means of a lever linkage and a microswitch to be actuated results in a large switching hysteresis and a large amount of adjustment, and a relatively large amount of space is also required.
  • the invention has for its object to simplify an arrangement of the type mentioned and to increase the accuracy of the display.
  • This object is achieved in an arrangement of the type mentioned in the introduction that an elastic band extending in the transport direction and projecting with a bulge into the space between the two baffles is provided, the beginning of which - seen in the transport direction - is fixed and the end thereof is slidably mounted, and that a stationary electrical sensor is provided which can be activated by the end of the band when the band is moved.
  • a pre-bent switching tape is used to detect the edge of the sheet-shaped data carrier, which is preferably made of thin metal sheet and the bulge of which is stretched by the data carrier being transported forward. This change in length of the switching band is used to activate the sensor.
  • the advantages of the invention lie in the particularly flat design, the simple assembly technology which is free of mechanical adjustments, and the high switching accuracy and the universal applicability of electrical sensors due to only minor modifications.
  • the fastening and sliding point of the band is preferably located on the upper side of the upper guide plate, both guide plates being provided with a recess in the region of the bulge. The recesses allow the bulge to extend unimpeded.
  • a simple construction results from the fact that a housing which can be placed on the upper guide plate is provided, which has on its underside the elastic band fastened at the beginning and slidably mounted at the end and in the region of the edge of the slidable end contains the sensor which is fixedly mounted on the housing.
  • the sensor and the elastic, bulged band are attached to a separate component, namely the housing. This can easily be placed on the upper guide plate, for example by snapping it into an opening in the upper guide plate.
  • an embodiment of the object according to the invention is shown schematically in the figure.
  • 10 is a lower and with 11 an upper baffle of a paper guiding device is not one shown printer referred to.
  • a paper sheet 13 is transported in the transport direction 12, the front edge of which is designated by 14.
  • the lower guide plate is provided with a recess 15 and the upper guide plate with a recess 16.
  • 17 denotes a housing, on the underside of which is arranged an elastic metal band designed as a switching band. Seen in the transport direction 12, the beginning 18 a of the band 18 is fastened to the underside of the housing, while the end 18 b is slidably mounted in the transport direction 12 between the underside of the housing 17 and the upper guide plate 11.
  • the switching band 18 extends with a bulge 18 c through both recesses 15, 16 of the lower and upper guide plates 10, 11.
  • An electrical sensor 19 is arranged in the region of the slidable end 18 b of the switching band 18 and is connected via electrical lines 20 to a signaling device, not shown.
  • With 21 is a mounting clamp and with 22 openings for the sensor 19 designed as a reflex light barrier.
  • the housing 17 projects with an adjusting pin 23, which is also used to hang the band 18, into an opening in the upper guide plate 11.
  • the elastic band 18 forms an acute angle 24 with the lower guide plate 10, so that the data carrier 13 entering in the direction 12 is always at the bottom Guide plate is guided along.
  • the tape 18 is stretched by the paper sheet 13 entering the angle 24 and, when the tape end 18b is deflected in a certain manner, activates the sensor 19, for example triggering a switching operation.
  • Sensor 19 and tape end 18 b are like this arranged to each other that the activation in a particular device always takes place with the same deflection of the band end 18 b. After activation of the sensor 19, the steps by which the data carrier 13 has to be transported until the first printing position is reached are counted when the data carrier 13 is transported further.
  • the switching time for each device depends on various factors (e.g. on the existing bulge of the belt, on the distance between the paper guide plates), but is constant within one device.
  • the transport route from the time of switching to reaching the first printing position is subject to tolerances (e.g. due to the position of the punched-out area for the sensor housing 17 in the upper guide plate 11 and the installation position of the guide plates 10, 11 itself).

Landscapes

  • Handling Of Cut Paper (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)
EP19890201155 1988-05-13 1989-05-05 Dispositif pour indiquer la position d'un tranche d'un support de données en forme de feuille Withdrawn EP0341786A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3816365A DE3816365A1 (de) 1988-05-13 1988-05-13 Anordnung zur positionsanzeige einer kante eines blattfoermigen datentraegers
DE3816365 1988-05-13

Publications (2)

Publication Number Publication Date
EP0341786A2 true EP0341786A2 (fr) 1989-11-15
EP0341786A3 EP0341786A3 (fr) 1990-09-26

Family

ID=6354314

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890201155 Withdrawn EP0341786A3 (fr) 1988-05-13 1989-05-05 Dispositif pour indiquer la position d'un tranche d'un support de données en forme de feuille

Country Status (4)

Country Link
US (1) US4938619A (fr)
EP (1) EP0341786A3 (fr)
JP (1) JPH01320186A (fr)
DE (1) DE3816365A1 (fr)

Families Citing this family (1)

* 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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB722710A (en) * 1951-08-03 1955-01-26 Printers Developments Ltd Improvements in or relating to printing machines
JPS5340453B2 (fr) * 1973-06-26 1978-10-27
US4312468A (en) * 1980-05-15 1982-01-26 Pitney Bowes Inc. System and apparatus for compensating for the difference between the actuation and release points of a switch

Also Published As

Publication number Publication date
EP0341786A3 (fr) 1990-09-26
JPH01320186A (ja) 1989-12-26
US4938619A (en) 1990-07-03
DE3816365A1 (de) 1989-11-23

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