EP0002796A1 - Mécanisme de transport pour feuilles de papier ou bandes de papier continues dans une imprimante - Google Patents

Mécanisme de transport pour feuilles de papier ou bandes de papier continues dans une imprimante Download PDF

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Publication number
EP0002796A1
EP0002796A1 EP78101786A EP78101786A EP0002796A1 EP 0002796 A1 EP0002796 A1 EP 0002796A1 EP 78101786 A EP78101786 A EP 78101786A EP 78101786 A EP78101786 A EP 78101786A EP 0002796 A1 EP0002796 A1 EP 0002796A1
Authority
EP
European Patent Office
Prior art keywords
ratchet wheel
pins
shaft
transport device
gear 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.)
Granted
Application number
EP78101786A
Other languages
German (de)
English (en)
Other versions
EP0002796B1 (fr
Inventor
Manfred Schmidt
Rainer Jürgen Kratzert
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of EP0002796A1 publication Critical patent/EP0002796A1/fr
Application granted granted Critical
Publication of EP0002796B1 publication Critical patent/EP0002796B1/fr
Expired 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
    • 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
    • B41J11/24—Detents, brakes, or couplings for feed rollers or platens
    • 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
    • B41J11/26—Pin feeds
    • B41J11/30—Pin traction elements other than wheels, e.g. pins on endless bands
    • 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
    • B41J19/00—Character- or line-spacing mechanisms
    • B41J19/76—Line-spacing mechanisms
    • B41J19/78—Positive-feed mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/20—Advancing webs by web-penetrating means, e.g. pins

Definitions

  • the invention relates to a paper transport device for the transport of single and continuous forms in a writing device, in particular for the transport in terminal printers, according to the preamble of claim 1.
  • a desktop computing device is known from German utility model 7 333 837, which contains a printing roller for transporting the paper to be printed, which serves on the one hand as a support for the printing unit and on the other hand as a friction drive.
  • this desktop computing device can be provided with a transport device having pins in the form of spiked rollers.
  • This spiked roller can be driven by constant angular steps by means of a stepping drive, which comprises a one-way stepping mechanism which is actuated by the step-by-step lifting member driving the platen roller.
  • This known transport device for forms in a desktop computing device either works only with the pressure roller as a friction drive or so that the spike roller is also driven by the drive for the pressure roller.
  • the object of the present invention is therefore to provide, in a paper transport device of the type according to the preamble of claim 1, the possibility that such a paper transport device can be easily adapted to various tasks, is simple in design, works safely and reliably and is simple to use is to be handled.
  • the invention makes it possible in an advantageous manner to design a simple rapiertransportvoriques so that it is very flexible in its application, so that both single and continuous forms can be safely fed, these are easy to insert and are fed in such a way that even at relatively high feed speeds an attractive and reliable print image with constant line spacing can certainly be achieved. Further advantages result from the description of the exemplary embodiment.
  • a printing roller 1 which serves both as a support in the printing position for a paper web 2 and for feeding purposes, is fixedly arranged on a shaft 3.
  • the shaft 3 is rotatably supported in bearings, not shown.
  • the paper web 2 can be wrapped around the printing roller 1 at an angle of more than 90 ° and, if, as in the exemplary embodiment shown in FIG. 1, it is an endlon form with perforations at the edges, it is one of two tractors 4 and 5 formed, pins crying crying device.
  • the tractors 4 and 5 each consist essentially of a belt 8 and 9, which is provided with teeth on the inside, and each is guided around two toothed wheels 11 and 12 or 13 and 14.
  • the belts 8 and 9 have pins 15 on the outside, which engage at a corresponding distance from the perforations in the edge of the paper web 2 and thus advance them when driven.
  • the tractors are also known to be provided with hinged covers 16, by means of which the paper web is held on the pins 15 or the belts 8 and 9.
  • a drive gear 17 is arranged, which is driven by an intermediate wheel 18 in the direction T, the transport direction of the paper web 2.
  • the intermediate gear 13 meshes with a gear 19 of a gear arrangement, which is arranged freely on the shaft 3 of the pressure roller 1.
  • the free running on the shaft 3 gear 19 can be directly from one Stepper motor 20 can be driven with a drive tooth support 21, or, as shown in the illustration in FIG. 1, via a further gear wheel 22, which is in engagement with the pinion 21 of the motor 20.
  • the two gears 19 and 22 are then rigidly wound together via a sleeve 23.
  • the gear wheel 22 has a first coupling part 24, which is provided with slots 25 into which rabbits 27 attached there can engage in order to connect the two coupling parts in a rotationally fixed manner.
  • the second coupling part 26 is attached to a toothed ratchet wheel 28 on the side of the first coupling part 24 of the gear wheel 22.
  • the ratchet wheel 28 is connected in a rotationally fixed manner to the hand wheel 30 via a sleeve 29.
  • the ratchet wheel 28 together with the sleeve 29 and the handwheel 30 are arranged on the shaft 3 of the roller 1 so as to be displaceable in the axial direction. For this displacement in the axial direction, an elongated hole 31 is provided on both sides in the sleeve 29.
  • a pin 32 is arranged, past which the sleeve 29 can be moved together with the handwheel 30 and the locking wheel 28 in the axial direction on the shaft 3 of the pressure roller 1, limited by the length of the elongated hole 31.
  • the ratchet wheel 28 together with the nandrad 30 is located on the right at the extreme end of the shaft 3, the ratchet wheel 28 is locked in rotation by a catch 33. Dal ei, the two coupling parts 24 and 26 are not in engagement with each other.
  • Fig. 2 shows a side view of a sectional view along the plane 2-2 of Fig. 1. It is clearly visible how the paper web 2 is guided at a wrap angle of more than 90 ° around the pressure roller 1 and of the transport device having pins, such as For example, the tractor 5 can be advanced in the direction of arrow T.
  • the printing roller 1 serves as a support for a printing device 34, which can be designed as a wire pen printer, for example.
  • the paper lies in the printing position in the printing device 34 well on the printing roller 1, so that a clean print image from the rapier arrangement is guaranteed.
  • paper brakes 35 formed from ulatt springs are provided, which bear against the printing roller 1 in an arc and thus press the paper web 2 against the printing roller 1.
  • paper pressure rollers 36 are provided, which can be placed on arms 37 in the direction of arrow 38 by an actuating device (not shown in more detail) on the printing roller 1 or can be held lifted by the latter. For example, when the paper is fed through the tractors 4 and 5, it is convenient to keep the paper pinch rollers 36 in the lifted condition shown in FIG. Otherwise the braking effect would be too great.
  • the transport device comprising pins formed from the two tractors 4 and 5 and the gears 17 and 18 is expediently designed as an associated assembly and is simple in the manner shown in FIGS. Not shown frame can be inserted and locked.
  • the drive coupling when such a pin having a transport device is attached to the intended roller drive then takes place via the gearwheel arrangement, which in the exemplary embodiment consists of the sewing gears 19) and 22, connected by a fixed sleeve 23.
  • a single gearwheel can also be provided for this, if the translation ratios and the space conditions allow it or if some require it.
  • the paper transport device designed according to the invention serves various purposes. Let us first consider the case where an endless form web with perforations in the margin that in Figs. shown transport device is to be inserted. For this purpose, the hand button 30 with the ratchet wheel 23 is shifted to the left by the operator into a position in which this is released by the catch 33, but not so far that the two coupling parts 24 and 26 are in engagement with one another.
  • the handwheel 30 Due to the rotationally fixed connection via the elongated hole 31 and the pin 32, the handwheel 30 is connected to the shaft 3 in a rotationally fixed manner. As a result, the pressure roller 1 is rotated when the handwheel 30 is rotated without the two tractors 4 and 5 being rotated via the non-coupled Zabnradtagen 21, 23, 22 and the intermediate wheel 18 and the drive gear 17. This is because the gear connection, consisting of the two gear wheels 19 and 22, is arranged freely on the shaft 3. Thus, in this intermediate position of the ratchet wheel 28, there is the possibility of enabling the pressure roller 1 via the handwheel 30 to thread the paper web, which is fed from the rear, without the transport device having the pins being rotated at the same time.
  • the pressure rollers 36 are usefully lifted from the pressure roller 1 in this working aisle. Thus, the paper can be inserted and loaded easily from the tape. If enough paper is fed over the pressure roller 1 serving as a friction drive, the edge-perforated paper web 2 can be inserted into the pins 15 in the correct position with the covers 16 open.
  • the handwheel 30 with the ratchet wheel 28 is moved so far in the axial direction to the left (see FIG. 1) that the lugs 27 of the The coupling part 2G engages in the slots 25 of the coupling part 24 and thus a connection between the gear 22 and via the connection consisting of the elongated hole 31 and pin 32 in a rotationally fixed manner with the shaft 3 and thus the pressure roller 1 are connected.
  • both the printing roller 1 and the tractors 4 and 5 can now be rotated together by hand using the handwheel 30.
  • the printing roller 1 as a paper brake if the paper web 2 provided with perforations at the edges is advanced by the two troctors 4 and 5 alone.
  • the belt wheel 30 is brought with the locking wheel 28 into the position shown in FIG. 1, in which the shaft 3 and thus the pressure roller 1 are locked and stand still due to the engagement of the detent 23 in a tooth space of the locking wheel 28.
  • the stepper motor 20 can drive the two tractors 4 and 5 via its drive gear 21 and the gear arrangement 19, 22 that freewheels on the shaft 3, the idler gear 18 and the drive gear 17 via the square drive shaft 6.
  • the stepper motor 20 is driven via its drive gear 21 in such a way that the gear 22 Via the coupled coupling parts 24 and 26, at the position of the handwheel 30 in the leftmost position in FIG. 1, or in the intermediate position, the driving force is transmitted via the elongated hole 31 and the pin 32 to the shaft 3 of the pressure roller 1.
  • the paper pressure rollers 36 are expediently located on the platen roller 1. It thus serves as a pure friction drive on the one hand and on the other hand as a support for the printing device 34.
  • Transport device shown pins consists of two tractors 4 and 5. Instead of these tractors, a so-called spiked roller transport device can be used, which contains two spikes of relatively large diameter at the edges for guiding perforated paper webs. Furthermore, the gear arrangement consisting of the two gear wheels 19 and 22 can be replaced by a single gear wheel running freely on the shaft 3, which meshes with the drive pinion 21 of the stepping motor 20 and is driven thereby.
  • the stepping motor 20 is used in a known manner to make the feed of the paper web home printing in the desired manner step by step.
  • the paper transport device designed according to the invention can be used in various ways in devices which write data or recordings, as was described above.
  • a particularly suitable application are the so-called terminal printers, which, due to the flexibility of the transport device according to the invention, can be used for various purposes, such as, for example, the continuous form feed with perforated webs or the single sheet feed and advancement with the printing roller solely as a friction drive.
  • the paper transport device designed according to the invention is very flexible in its possible uses, comfortable and easy for the operator to operate and structurally simple and functional.

Landscapes

  • Handling Of Sheets (AREA)
  • Advancing Webs (AREA)
EP78101786A 1977-12-27 1978-12-20 Mécanisme de transport pour feuilles de papier ou bandes de papier continues dans une imprimante Expired EP0002796B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2758148 1977-12-27
DE2758148A DE2758148C2 (de) 1977-12-27 1977-12-27 Papiertransportvorrichtung für den Transport von Einzel- oder Endlosformularen in einem schreibenden Gerät

Publications (2)

Publication Number Publication Date
EP0002796A1 true EP0002796A1 (fr) 1979-07-11
EP0002796B1 EP0002796B1 (fr) 1981-09-02

Family

ID=6027374

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78101786A Expired EP0002796B1 (fr) 1977-12-27 1978-12-20 Mécanisme de transport pour feuilles de papier ou bandes de papier continues dans une imprimante

Country Status (5)

Country Link
EP (1) EP0002796B1 (fr)
JP (1) JPS5492815A (fr)
CA (1) CA1085426A (fr)
DE (2) DE2758148C2 (fr)
IT (1) IT1202808B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0073578A2 (fr) * 1981-08-20 1983-03-09 Seiko Epson Corporation Dispositif d'alimentation de papier pour une imprimante
DE3232875A1 (de) * 1982-09-02 1984-03-08 Mannesmann AG, 4000 Düsseldorf Papiertransportvorrichtung fuer drucker, insbesondere fuer matrixdrucker
US4602750A (en) * 1984-03-01 1986-07-29 U.S. Philips Corporation Device for inherently adjusting paper transport modes for rolled or separated output
EP0251988A1 (fr) * 1986-06-25 1988-01-07 Siemens Aktiengesellschaft Méthode de fabrication d'un rouleau de transport de papier et son application dans un dispositif d'impression

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH022604Y2 (fr) * 1981-01-21 1990-01-22
JPS5833486A (ja) * 1981-04-09 1983-02-26 セントロニクス・デ−タ・コンピユ−タ−・コ−ポレ−シヨン プリンタ−用給紙システム
DE3214549C2 (de) * 1982-04-20 1985-01-17 Siemens AG, 1000 Berlin und 8000 München Transportvorrichtung für randgelochtes Faltpapier und für Rollenpapier
DE3230190C2 (de) * 1982-08-13 1984-12-06 Siemens AG, 1000 Berlin und 8000 München Papiereinzugsvorrichtung für Druckereinrichtungen
GB2139149B (en) * 1983-03-04 1986-06-25 Canon Kk Sheet advancing device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1561310A1 (de) * 1967-03-10 1970-04-02 Sis S A Vorrichtung an Schreibmaschinen
US3753483A (en) * 1970-03-20 1973-08-21 Memorex Corp Typewriter dual feed apparatus
FR2176428A5 (fr) * 1972-03-14 1973-10-26 Int Computers Ltd
US3880016A (en) * 1974-03-07 1975-04-29 Qume Corp Variable displacement apparatus for platen and tractor feed
FR2286003A1 (fr) * 1974-09-27 1976-04-23 Honeywell Inf Systems Italia Mecanisme d'entrainement du papier pour une imprimante a copies multiples

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1561310A1 (de) * 1967-03-10 1970-04-02 Sis S A Vorrichtung an Schreibmaschinen
US3753483A (en) * 1970-03-20 1973-08-21 Memorex Corp Typewriter dual feed apparatus
FR2176428A5 (fr) * 1972-03-14 1973-10-26 Int Computers Ltd
US3880016A (en) * 1974-03-07 1975-04-29 Qume Corp Variable displacement apparatus for platen and tractor feed
FR2286003A1 (fr) * 1974-09-27 1976-04-23 Honeywell Inf Systems Italia Mecanisme d'entrainement du papier pour une imprimante a copies multiples

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0073578A2 (fr) * 1981-08-20 1983-03-09 Seiko Epson Corporation Dispositif d'alimentation de papier pour une imprimante
EP0073578A3 (en) * 1981-08-20 1984-10-03 Epson Corporation Paper feeding device for use with a printer
DE3232875A1 (de) * 1982-09-02 1984-03-08 Mannesmann AG, 4000 Düsseldorf Papiertransportvorrichtung fuer drucker, insbesondere fuer matrixdrucker
US4602750A (en) * 1984-03-01 1986-07-29 U.S. Philips Corporation Device for inherently adjusting paper transport modes for rolled or separated output
EP0251988A1 (fr) * 1986-06-25 1988-01-07 Siemens Aktiengesellschaft Méthode de fabrication d'un rouleau de transport de papier et son application dans un dispositif d'impression

Also Published As

Publication number Publication date
IT7830727A0 (it) 1978-12-12
JPS5492815A (en) 1979-07-23
IT1202808B (it) 1989-02-09
CA1085426A (fr) 1980-09-09
DE2758148C2 (de) 1980-01-10
EP0002796B1 (fr) 1981-09-02
DE2758148B1 (de) 1979-05-10
DE2861046D1 (en) 1981-11-26

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