EP0385550A2 - Système d'avance d'une imprimante - Google Patents

Système d'avance d'une imprimante Download PDF

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Publication number
EP0385550A2
EP0385550A2 EP90200450A EP90200450A EP0385550A2 EP 0385550 A2 EP0385550 A2 EP 0385550A2 EP 90200450 A EP90200450 A EP 90200450A EP 90200450 A EP90200450 A EP 90200450A EP 0385550 A2 EP0385550 A2 EP 0385550A2
Authority
EP
European Patent Office
Prior art keywords
lever
gear
switch
tractor
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.)
Granted
Application number
EP90200450A
Other languages
German (de)
English (en)
Other versions
EP0385550A3 (fr
EP0385550B1 (fr
Inventor
Manfred Rosenthal
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.)
Cessione psi Printer Systems International GmbH
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 EP0385550A2 publication Critical patent/EP0385550A2/fr
Publication of EP0385550A3 publication Critical patent/EP0385550A3/fr
Application granted granted Critical
Publication of EP0385550B1 publication Critical patent/EP0385550B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41J11/48—Apparatus for condensed record, tally strip, or like work using two or more papers, or sets of papers, e.g. devices for switching over from handling of copy material in sheet form to handling of copy material in continuous form and vice versa or point-of-sale printers comprising means for printing on continuous copy material, e.g. journal for tills, and on single sheets, e.g. cheques or receipts

Definitions

  • the invention relates to an arrangement for adjusting a tractor, a switch and pressure / friction rollers (pairs of rollers) having a printer, for. B. a dot matrix printer, from single paper transport to continuous paper transport and vice versa.
  • DE patent application P 38 07 807 has proposed a printer in which adjustment is carried out by means of a pivotable tractor and by means of an adjustable eccentric lever.
  • the invention has for its object to improve an arrangement of the type mentioned in such a way that an automatic adjustment can be carried out by a simple operation without the need for intervention in the printer.
  • This object is achieved according to the invention in that for adjustment a detachably connected to the printer, independent actuator gear is provided, which is formed in the mounted state when actuated from outside to act on the tractor, the paper switch and at least one pair of rollers.
  • the actuating gear forms a self-contained, self-contained unit which, after being attached to the printer, is brought into engagement with associated actuating elements.
  • the actuator is operated from the outside, for. B.
  • the actuating gear is preferably arranged to the right of the printing roller, the plunger being seated on the printer carriage carrying the print head. All that is required for the changeover or adjustment is a displacement of the printer carriage to the right, the adjustment mechanism being adjusted via the plunger.
  • This provides an automatic changeover of the components required for single paper feed or continuous paper feed without having to intervene by hand in the tractor.
  • the changeover can be carried out in a simple manner in that the electronics present in such printers are given a corresponding control command for displacing the slide provided with the plunger.
  • the changeover itself then takes place via the actuating gear which is coupled or can be coupled to the printer.
  • the actuating gear preferably contains a lever mechanism for adjusting the switch via a switch lever and for shifting a gear wheel which can be coupled to a motor drive and the tractor via a spring-loaded control lever; the actuating gear also contains a gear gear that can be switched on via the coupling gear with a driver for lifting the pressure rollers via a roller lever.
  • the actuator gearbox constructed in this way contains, on the one hand, the components required for engaging and disengaging the tractor in a compact design and, on the other hand, the components Change of paper paths necessary elements for changing the switch on the one hand and for adjusting the pressure rollers on the other.
  • the disk-shaped driver is rotatably mounted on a gear wheel via a slip clutch and has an eccentric gear wheel which is in meshing operative connection with a stationary tooth segment only over a certain distance during the lifting process.
  • the lever mechanism has a slide which is adjustable by the plunger of the slide via a spring-loaded rotary lever and is spring-loaded transversely to the direction of adjustment, which is articulated at its outer end facing away from the slide and at its inner end facing the slide has a recess on the face for engaging the switch lever; Furthermore, a projection is provided on the underside of the slide for engaging the rotary lever, which has a bevel which cooperates with a housing stop on the side facing away from the rotary lever.
  • the coupling gearwheel with which the tractor can be coupled in or out is shifted on the one hand, and on the other hand, the switch for switching the paper path from continuous to single paper feed and vice versa is adjusted in a simple and reliable manner by the switch lever acting on the slide .
  • the actuating gear can be reset from the central position to the central position by a single tapping movement of the plunger and from the central position to the basic position by a single one-off actuation in the same direction.
  • the switch lever In the middle position, the switch lever is thus in the recess of the slide, so that the slide is locked and remains in this position, even if the slide with the plunger is moved back into the printing position.
  • the switch lever In the basic position, however, the switch lever rests on the front edge of the slide, i. H. the slide is unlocked and the switch is now switched to continuous paper storage.
  • the setting of the different operating modes with an arrangement according to the invention is preferably carried out in such a way that for the production of the middle position (single paper conveying) the slide is shifted so far out of the basic position that the switch lever slides into the recess of the slide and the slope immediately in front of a housing attachment lies.
  • the carriage is moved so far that the slide on the slope from Housing stop is raised and slides back into its starting position with the coupling of the tractor via the coupling gear, whereby on the one hand the switch lever is rotated out of the recess by a lug of the rotary lever and on the other hand the rotation of the driver is put into operation for the delayed lifting of the pressure rollers via the roller lever.
  • the carriage only needs to be moved with one movement in the direction of the actuating gear.
  • the lever mechanism interacts with the gearwheels of the actuating gear, and depending on the operating mode, the tractor is either engaged or disengaged via the gearwheel.
  • the tractor When feeding single paper, the tractor is disengaged by disengaging the coupling gear.
  • the switch lever is adjusted by snapping it into the recess in the slide on a single paper tray.
  • the switch lever has left the recess, so that the switch is now on continuous paper feed.
  • the gear transmission was put into operation, with the driver, which is used to actuate a roller lever for lifting the pressure rollers, first being taken along by friction. After a short rotary movement, the eccentric gear of the driver engages in the fixed tooth segment and the driver is positively controlled.
  • the arrangement is preferably used in a printer described in claim 9. This results in a compact, easy-to-use and adjustable printer.
  • the printer according to FIGS. 1 and 2 has a single input area located at the front for the input of single and continuous papers with a removable support plate 10 for forming an input channel 11 for manual input of single papers. Below the platen is the tractor area with e.g. B. two tractors 12 for conveying continuous forms. In this case, a single removable cassette 13 for automatic single paper feed is located above the input channel 11.
  • the individual cartridges form independent units with their own motor drive and can be detachably connected to the printer via hooks 14 and nipples 15.
  • a print head 16 can be moved in the direction 17 along a printing roller 18 on a carriage 19.
  • a friction shaft 20, 21 is provided in front of and behind the print head 16, which are constantly driven by a motor drive, not shown.
  • the friction shafts carry friction rollers 20a, 21a, which work together with associated pressure rollers 20b, 21b.
  • 22 is a friction transport for continuous paper and 23 a friction transport for single papers.
  • An adjustable switch 24 serves to deflect the individual papers into a storage compartment 25 and the continuous papers to an ejection 26 with a tear-off edge.
  • the continuous papers are fed from the front in the direction of arrow 27 and are transported through the device by the friction transport 22 located behind the print head.
  • Single papers are inserted manually in the direction of arrow 28 and automatically from the cassettes 13 in the direction of arrow 29.
  • Fig. 2a shows the position of the switch in continuous paper storage and Fig. 2b as a cutout the position of the switch 24 in single paper storage.
  • the actuator described below enables switching from single paper feed to continuous paper feed without the operator must intervene manually.
  • the switchover command is program-controlled, e.g. B. via an electronics 30 arranged in the lower rear region.
  • the actuating gear 31 has a longitudinally displaceable coupling gear 40, which is arranged between a drive wheel 41 of the friction shaft 20 and a drive wheel 42 of the tractor 12 and, when actuated, can either engage or disengage the tractor 12.
  • the coupling gearwheel 40 is seated on a shaft 43 which is mounted in the housing 32 and which is inserted with the free end into the printer board 34 via a compression spring 44.
  • the coupling gearwheel 40 has a toothing 45 which meshes with a gearwheel 46.
  • This gear 46 meshes with a gear 47, which is mounted together with a driver 48 on a shaft 49, the gear 47 meshing with an eccentric gear 50 mounted on the driver 48.
  • a gear segment 51 is incorporated, which meshes with the eccentric gear 50 over a certain distance.
  • the driver 48 is mounted on the gear 47 via a slip clutch, i. H. when the gears 40, 45, 46, 47 rotate, the driver 48 is entrained by frictional forces, but can be stopped at any time without the gears mentioned blocking.
  • a pin attached to the driver 48 is designated.
  • 53 denotes a roller lever, one end 53a of which is guided via a nipple 53c in a housing cutout 32a and thereby has two end stops and the other is free End 53b is fork-shaped and serves to temporarily hold the pin 52.
  • the lever mechanism 38 has a two-armed actuating lever 55 which is pivotably mounted in the housing 32, one lever arm 55a of which is connected to the shaft 43 and the other lever arm 55b of which is connected to a slide 56.
  • the slide 56 is longitudinally displaceable in the housing 32 and is pressed by a spring 57 in the direction 58 onto the housing 32.
  • the slider 56 has an end-side recess 59 and a projection 60 arranged on the underside, which cooperates with a housing attachment 62 via a slope 61.
  • the slide 56 is actuated via a rotary lever mounted on a pin 63 of the housing 32 64, which in turn is actuated by the plunger 37 against the force of a return spring 62 and the compression spring 44.
  • a cylindrical nipple 64a on the underside of the rotary lever 64 is used for power transmission.
  • a switch lever is designated by 65, which, depending on the operating mode, bears either on the long end face of the slide 56 or on its recess 59.
  • 3a and 4a show the actuating gear in the basic position when endless transport is switched on.
  • the engaged coupling wheel 40 enables the rotational movement of the constantly driven friction shaft 20 to be transferred to the square shaft 12a of the tractor 12.
  • the form head of the first inserted continuous form is first transported to the friction rollers 20a by means of the tractors 12.
  • the form head then reaches the print head 16, the friction rollers 21a and finally the transport rollers 22.
  • These run about 1.5% faster than the tractor, which creates a certain paper tension.
  • the pressure rollers 20b, 21b are therefore lifted as soon as the set of forms reaches the transport rollers 22.
  • the opening process for the pressure rollers is started synchronously with the start of the paper feed.
  • the pin 52 runs in a positively controlled manner - after it has traveled a distance which corresponds to the continuous paper transport from the tractors 12 to the transport rollers 22 - into the fork-shaped opening of the roller lever 53, rotates it up to its end position (see FIG. 5b) and leaves the fork-shaped opening counterclockwise.
  • the eccentric gear 50 is again out of engagement with the toothed segment 51.
  • the bearing journal 67 of the eccentric gear 50 moves in the above-mentioned process in a segment-shaped groove 68 of the housing 32 with the two end stops 68a and 68b (see FIGS. 5 and 7).
  • the roller lever 53 is attached to a D-axis 69 which is mounted in the side boards of the printer (Fig. 8).
  • pressure springs 70 of the pressure rollers 20b are raised by the D-axis 69, so that the pressure of the rollers 20b on the friction rollers 20a is released.
  • the same process takes place with the pressure rollers 21b, namely by lifting pressure springs 71 via a D-shaft 72 which is connected to the D-shaft 69 via a lever linkage 73.
  • the continuous paper is first moved backwards into a parking position outside the paper path for single sheet transport after separation at a tear-off edge.
  • the driver 48 is rotated clockwise, the process described above taking place in the opposite sense.
  • the Roller lever 53 returns to the position shown in Fig. 5a, the D-axes 69 and 72 rotated back and the pressure springs 70, 71 are effective again.
  • the actuator can be switched from endless transport to single sheet transport.
  • the slide 19 with the plunger 37 is moved to the right up to a certain central position by an electronically initiated movement in the direction of the arrow 17. This exact middle position is shown in Fig. 3b and Fig. 4b.
  • the plunger 37 engages the nipple 64a of the rotary lever 64, as a result of which the slide 56 is moved to the right via the projection 60.
  • the actuating lever 55 is actuated, which brings the coupling gear 40 to the left against the force of the spring 44, namely out of engagement with the drive 41.
  • the switch lever 65 is connected to a pull rod 74 according to FIG. 8 and is pressed against the front longitudinal edge of the slide 56 by a tension spring 75 in the continuous paper conveying described above (see FIG. 4a).
  • the pull rod 74 has an articulated connection 76 for adjusting the switch 24. In the case of continuous paper conveying according to FIG. 8, the switch 24 is set upwards.
  • the switch lever 65 After switching to the position shown in FIGS. 3b and 4b, the switch lever 65 snaps into the recess 59 and thus moves the switch lever 24 down into the position shown in FIG. 9 for storing single papers upwards in the storage compartment 25. After the Switch lever in the recess 59, the slide 56 is locked, and the carriage 19 can be moved to the left to execute print commands without changing the central position of the actuator 31.
  • the print carriage 19 To switch from single sheet transport to endless transport, the print carriage 19, triggered by an electronic command, is moved to the right into the position shown in FIG. 3c. To facilitate the engagement process, the teeth of the gears 40, 41 are chamfered.
  • the slide 56 is raised above the slope 61 of the projection 60 and reaches the raised position which can be seen in FIGS. 3c and 4c. Since the projection 60 is no longer supported on the nipple 64a, the slide 56 is returned to an inclined position by the compression spring 44 via the coupling gear 46 and the adjusting lever 55. In this position, the slide 56 has reached its starting position according to FIG. 3a, but is at an angle since its projection 60 rests on the not yet reset rotary lever 64 (see the position of the slide 56 shown in broken lines in FIG.
  • the switch lever 65 is simultaneously pressed out of the recess 59 by a lug 64b of the rotary lever 64.
  • the slide 56 can therefore slide back when, on the one hand, the blocking is lifted by the projection 60 when lifting and, on the other hand, the switch lever 65 is pushed out of the recess 59 and thus the locking is released.
  • the carriage 19 can be moved to the left and leave the switching position in order, for. B. Execute print commands. Simultaneously with this movement to the left, the rotary lever 64 is released and can also assume its starting position according to FIGS. 3a and 4a by means of the leg spring 62.
  • the nose 64b first releases the switch lever 65, which then rests against the longitudinal edge 56a (FIG. 4a).
  • the slide 56 can be withdrawn from its inclined position by the spring 57 into its horizontal starting position according to FIG. 3a.
  • the switch lever 65 rests against the front edge 56a of the slider 56, the switch 24 is set to continuous paper feed via the pull rod 74.
  • the actuating gear 31 is thus again in the “continuous paper transport” position according to FIGS. 3a and 4a.
EP90200450A 1989-03-02 1990-02-26 Système d'avance d'une imprimante Expired - Lifetime EP0385550B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3906611A DE3906611A1 (de) 1989-03-02 1989-03-02 Anordnung zur verstellung eines druckers
DE3906611 1989-03-02

Publications (3)

Publication Number Publication Date
EP0385550A2 true EP0385550A2 (fr) 1990-09-05
EP0385550A3 EP0385550A3 (fr) 1991-01-02
EP0385550B1 EP0385550B1 (fr) 1993-12-15

Family

ID=6375320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90200450A Expired - Lifetime EP0385550B1 (fr) 1989-03-02 1990-02-26 Système d'avance d'une imprimante

Country Status (4)

Country Link
US (1) US5059049A (fr)
EP (1) EP0385550B1 (fr)
JP (1) JPH02277669A (fr)
DE (2) DE3906611A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0482356A2 (fr) * 1990-09-21 1992-04-29 Canon Kabushiki Kaisha Dispositif d'enregistrement
EP0556944A1 (fr) * 1992-02-21 1993-08-25 MANNESMANN Aktiengesellschaft Imprimante pour imprimer différents genres de papier et méthode pour l'alimentation alternée du papier en feuille et du papier en bandes

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05124276A (ja) * 1991-10-31 1993-05-21 Brother Ind Ltd 印字装置
JP3300418B2 (ja) * 1992-08-20 2002-07-08 ブラザー工業株式会社 印字装置
US5324124A (en) * 1993-01-28 1994-06-28 International Business Machines Corporation Guide system for feed roll entry
JPH082761A (ja) * 1994-06-16 1996-01-09 Canon Inc 記録装置およびインクジェット記録装置
DE19581389T1 (de) * 1994-10-06 1996-12-05 Pfu Ltd Verfahren und Vorrichtung zur Papierzuführung für einen Drucker
ES2165951T3 (es) * 1995-11-06 2002-04-01 Fujitsu Ltd Impresora del tipo de trayectos multiples.
US6082730A (en) * 1998-09-29 2000-07-04 Lexmark International, Inc. Integrated long sheet feeder
US6695503B1 (en) * 2002-10-02 2004-02-24 Lexmark International, Inc. Print media feed system for an imaging apparatus
JP4909785B2 (ja) * 2007-03-28 2012-04-04 株式会社ミマキエンジニアリング プリンタ／プロッタ装置
CN101214760B (zh) * 2007-12-27 2010-05-19 江门江裕映美信息科技有限公司 一种能够自动切换打印机的连续介质与单页介质的装置
JP5599050B2 (ja) * 2010-08-02 2014-10-01 ローランドディー．ジー．株式会社 画像形成装置
CN104210255B (zh) * 2014-08-26 2017-01-25 广州市宝比万像科技有限公司 打印机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0191984A1 (fr) * 1984-12-14 1986-08-27 Tokyo Electric Co., Ltd. Dispositif d'entraînement du papier dans une imprimante
EP0197340A2 (fr) * 1985-04-12 1986-10-15 International Business Machines Corporation Dispositif d'alimentation en papier pour imprimante
EP0258026A1 (fr) * 1986-08-22 1988-03-02 Brother Kogyo Kabushiki Kaisha Imprimante avec mécanisme d'alimentation du papier à fonctions multiples
EP0280643A2 (fr) * 1987-02-24 1988-08-31 MANNESMANN Aktiengesellschaft Dispositif de transport du papier dans une machine de bureau, en particulier une imprimante matricielle
EP0332264A2 (fr) * 1988-03-10 1989-09-13 Philips Patentverwaltung GmbH Machine de bureau, en particulier imprimante

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DE197340C (fr) *
DE2716396C3 (de) * 1977-04-13 1981-01-22 Siemens Ag, 1000 Berlin Und 8000 Muenchen Vorrichtung zur Papierführung in Druckgeräten, insbesondere bei Datenoder Fernschreibmaschinen
US4577984A (en) * 1982-12-07 1986-03-25 Brother Kogyo Kabushiki Kaisha Paper feeding device for a printing apparatus providing alternatively different feed paths
GB2162795B (en) * 1984-07-06 1988-11-02 Centronics Data Computer Printer paper handling system
IT1196758B (it) * 1984-11-19 1988-11-25 Olivetti & Co Spa Alimentatore di supporti di stampa per una macchina per scrivere o simili macchine da ufficio
JPH0354924Y2 (fr) * 1985-10-14 1991-12-05
DE3607080A1 (de) * 1986-03-04 1987-09-10 Mannesmann Ag Vorrichtung fuer den papiertransport in druckern mit balkenfoermigem druckwiderlager, insbesondere in matrixdruckern
DE3607079A1 (de) * 1986-03-04 1987-10-15 Mannesmann Ag Papiertransporteinrichtung fuer einzelblaetter und endlospapierbahnen in druckern, insbesondere in matrixdruckern
JPH0671807B2 (ja) * 1986-11-10 1994-09-14 ブラザー工業株式会社 印字装置
US4808019A (en) * 1987-05-29 1989-02-28 Hewlett-Packard Company Unified paper path printer
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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0191984A1 (fr) * 1984-12-14 1986-08-27 Tokyo Electric Co., Ltd. Dispositif d'entraînement du papier dans une imprimante
EP0197340A2 (fr) * 1985-04-12 1986-10-15 International Business Machines Corporation Dispositif d'alimentation en papier pour imprimante
EP0258026A1 (fr) * 1986-08-22 1988-03-02 Brother Kogyo Kabushiki Kaisha Imprimante avec mécanisme d'alimentation du papier à fonctions multiples
EP0280643A2 (fr) * 1987-02-24 1988-08-31 MANNESMANN Aktiengesellschaft Dispositif de transport du papier dans une machine de bureau, en particulier une imprimante matricielle
EP0332264A2 (fr) * 1988-03-10 1989-09-13 Philips Patentverwaltung GmbH Machine de bureau, en particulier imprimante

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN *
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 27, no. 4B, September 1984, pages 2548-2550, New York, US; I.W. Cassel et al.: "Turret-type paper handler for printer" *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0482356A2 (fr) * 1990-09-21 1992-04-29 Canon Kabushiki Kaisha Dispositif d'enregistrement
EP0482356A3 (en) * 1990-09-21 1992-08-05 Canon Kabushiki Kaisha Recording apparatus
US6015202A (en) * 1990-09-21 2000-01-18 Canon Kabushiki Kaisha Recording apparatus
EP0556944A1 (fr) * 1992-02-21 1993-08-25 MANNESMANN Aktiengesellschaft Imprimante pour imprimer différents genres de papier et méthode pour l'alimentation alternée du papier en feuille et du papier en bandes

Also Published As

Publication number Publication date
DE3906611A1 (de) 1990-09-06
JPH02277669A (ja) 1990-11-14
DE59003824D1 (de) 1994-01-27
US5059049A (en) 1991-10-22
EP0385550A3 (fr) 1991-01-02
EP0385550B1 (fr) 1993-12-15

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