EP0645248B1 - Machine à imprimer - Google Patents

Machine à imprimer Download PDF

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Publication number
EP0645248B1
EP0645248B1 EP94113784A EP94113784A EP0645248B1 EP 0645248 B1 EP0645248 B1 EP 0645248B1 EP 94113784 A EP94113784 A EP 94113784A EP 94113784 A EP94113784 A EP 94113784A EP 0645248 B1 EP0645248 B1 EP 0645248B1
Authority
EP
European Patent Office
Prior art keywords
printer
printing ribbon
spool
lever
print head
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.)
Expired - Lifetime
Application number
EP94113784A
Other languages
German (de)
English (en)
Other versions
EP0645248A2 (fr
EP0645248A3 (fr
Inventor
Dirk Umbach
Peter Schneider
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.)
Meto International GmbH
Original Assignee
Esselte Meto International GmbH
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 Esselte Meto International GmbH filed Critical Esselte Meto International GmbH
Publication of EP0645248A2 publication Critical patent/EP0645248A2/fr
Publication of EP0645248A3 publication Critical patent/EP0645248A3/fr
Application granted granted Critical
Publication of EP0645248B1 publication Critical patent/EP0645248B1/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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads

Definitions

  • the invention relates to a printing press according to the Preamble of claim 1.
  • a printing press of the generic type is from DE 41 08 172 A1 became known. If, for example, labels are on the record carrier to be printed in this way or as Sub-areas of the latter to be used for labels, there are between two labels or sub-areas each without imprint.
  • thermal transfer ribbon is therefore used a device in which in economy mode - in which the Record carrier not printed, but moved past the print head the thermal print head remains in the printing position and the platen roller to a position further from the printhead is moved.
  • the transfer of the transfer belt is not in interrupted in a more defined way.
  • a printing device has become known from GB-A-2 089 734, at which has a carriage equipped with a print head over the Width of the recording medium moved. Each for printing Used strand of the printing tape is over the entire width of the Record carrier excited and is characterized by two different Clamps held.
  • a first clamping device is attached to the carriage, and a second clamping device on the housing. During printing (i.e. carriage carriage) the first clamping device released, and the second one fixes the print ribbon. Thereby is the pressure band relative to the housing of the printing device and Media is stuck and the print head moves while printing along the ribbon.
  • the recording medium is rotated by the pressure roller transported further.
  • there are no savings options for the print ribbon are there - even if longer sections of a line are not closed are printed - with each carriage return one of the entire width length of the printing tape corresponding to the record carrier is withdrawn from the supply spool.
  • the printing press is equipped with a control, which defines exactly at which point the record carrier is printed and where there are gaps in the direction of flow should give.
  • the data required for this are in one Control computer. You can now use this control Make use of the computer insofar as you always use it when in the direction of flow of the record carrier and the thermal transfer ribbon through the print area the "last line" is printed has been, the contact pressure between the counter pressure roller and the Thermal print head is lifted. But because according to the invention suitable way is also ensured that the locking device for the thermal transfer ribbon in an effective Position so that it cannot continue, the recording medium can be placed under the stationary thermal transfer ribbon continue through without damage to either ligament, there with the beginning of the standstill of the thermal transfer ribbon Printhead e.g. is lifted off. As soon as the place to be printed the "first line" has arrived in the printing area, the locking device approved for the thermal transfer ribbon and the contact pressure for the print head is generated again. Run with it then again both ribbons through the print area up to next "last line”.
  • the lifting of the contact pressure can be done for example achieve that while increasing the spring force the thermal print head from the counter pressure roller slightly away. Fractions of a millimeter are sufficient here. Instead, you can also use the counter pressure roller from the thermal print head Remove until the spring is completely relieved. This usually requires a larger adjustment range, which is why the first-mentioned variant is preferred.
  • the printing tape is unwound from a first spool and on a second spool wound.
  • the thermal transfer ribbon is attached to the designated one Place held indirectly through the supply reel.
  • a slip clutch between a Drive for the printing belt and one driven by the drive Spool for the printing tape switched a slip clutch.
  • the Holding the thermal transfer ribbon has the consequence that also the output side of the slip clutch, for example the second coil, can no longer rotate. Because of the intermediary But the drive motor can slip clutch without continue to run without damaging this Drive or thermal transfer ribbon comes. If you do the latter released by the locking device, then follows Further transport with the now no longer slipping clutch Help of the drive motor.
  • a drive for lifting the counter pressure roller from the thermal print head or the latter from the counter pressure roller can also according to the invention by the controller the press can be operated.
  • a further development of the invention provides that the thermal transfer ribbon indirectly by holding the first coil can be locked, the locking device with the interacts first coil. However, this does not mean that the locking device directly on the first coil must act, rather it is sufficient if they on a acts rotatably coupled to the first coil element.
  • the invention proposed that the first coil rotatably is coupled with an externally toothed wheel, which a means the control lockable tooth is assigned.
  • the ratchet tooth can be in any gap between two neighboring ones Engage teeth and thereby turning this externally toothed Stop the wheel. So that is also the rotation coupled first coil firmly.
  • the tape can then no longer unwound from this spool and as a result can no longer be wound on the second spool. Conveniently but you don't see a pointed tooth shape in front, but rather a rectangular or a sawtooth shape. If the tooth does not immediately enter a tooth gap can, this is the case at the latest when in Direction of rotation seen the next tooth gap the latching tooth assigned. Of course, in an appropriate manner ensure that the tooth locks in securely can perform. The same applies to disengagement.
  • Another variant of the invention is characterized in that that the locking tooth is on a swivel arm, which by means of a controllable locking member in one ineffective position is durable.
  • a controllable locking member in one ineffective position is durable.
  • About controlling the Printing machine can turn the locking member into an ineffective Position it so that the swivel arm is for locking can perform the necessary pivoting movement. This happens for example with some assistant, for example Spring force, or by gravity, which presupposes that the swivel arm when the ratchet tooth is disengaged is in a raised pivot position.
  • the locking member by means of a controllable drive from its locked position to a release position convertible and vice versa. Operated at the given time the control of the printing press the controllable drive for the locking member, causing this to be effective in one ineffective position or vice versa. If that Thermal transfer ribbon removed again and available for printing the controllable drive provides that Locking element back into its ineffective position.
  • the locking member is located in a very advantageous manner a pivoted lever, which by means of a controllable drive forming eccentric drive adjustable is. Rotating the eccentric causes in a known manner a pivoting of the lever coupled with it, and this Swivel movement can be used to swivel the swivel arm with the locking tooth in the locking position and in the release position be exploited.
  • an eccentrically attached to a drivable rotary member Pin engages in a longitudinal slot that is at a distance arranged on the axis of rotation of the pivotable lever on this is.
  • This pin-slot connection enables in the implementation of the rotary motion in a manner known per se a back and forth swivel motion. For this reason the rotating member also only performs one rotation at a time 180 ° through to the locking device from its effective Transfer position to the ineffective position or vice versa.
  • the longitudinal slot is transverse to the direction of deflection of the lever.
  • Another preferred embodiment of the invention includes Claim 9.
  • the use of an angle lever brings many advantages, but especially a compact one Construction.
  • a particularly useful variant of the invention results yourself from claim 12. Accordingly, you can an adjustment drive for the thermal print head, i.e. a drive with which one in case the thermal transfer ribbon stops should be lifted off the counter pressure roller, at the same time take advantage of the standstill of the thermal transfer ribbon to effect or cancel. So you reach from this point of view also a compact and therefore inexpensive Training of the printing press in this area. Furthermore you get by with a small number of parts, which in With regard to a low susceptibility to malfunction is an advantage.
  • the thermal transfer ribbon 4 is unwound from a first spool 1, passes through print area 2 and then turns on a second coil 3 wound. Preferably located the two coils 1 and 3, including the pulleys or rollers 5 and 6, in an ink ribbon cassette. Between the deflecting rollers 5 and 6 is the working Run 7 of the thermal transfer ribbon 4. It is over a Counter pressure roller 8 of the not shown in detail Printing press led. Between the thermal transfer ribbon 4 and the counter-pressure roller 8 is still not represented recording medium, e.g. a carrier tape with labels to be printed. There is a problem with printing Thermal print head 9 on the continuous, working strand 7 of the thermal transfer ribbon 4 and presses, with interposition of the mentioned recording medium, this firmly to the counter pressure roller 8.
  • recording medium e.g. a carrier tape with labels to be printed.
  • the contact pressure is by means of one not shown for clarity, the swiveling arm 10 depressing helical compression spring upset.
  • the pivotable arm 10 carries the thermal print head 9. The mentioned, by the helical compression spring loaded arm 10 is in the sense of double arrow 11 around the Axis 12 pivotable.
  • the record carrier which also has a role or unwound and possibly on another Roll or spool can be wound up in individual fields to be printed divided or carries, for example Labels, but also not to the front and rear Edge to be printed. In this respect arise between in the direction 13 of the two belts between successive, identical prints unprinted Intermediate sections. It now represents an unjustified one Cost is when you look at the thermal transfer ribbon 4 transported on even if the one below it located recording media are not printed at all should. According to the invention, you can now use the unnecessary thermal transfer ribbon thereby reduce or at least bring it to about zero so that the thermal transfer ribbon 4 always stops when the record carrier which runs continuously, just should not be printed.
  • the press needs to print in Thermal transfer process basically a corresponding one electronic control with computer. This can now be done be used - because they also have all the necessary Data has - the locking device 14 then to bring to work position when the thermal transfer ribbon 4 should not continue and always release if the record carrier has gone through so far that the the next point to be printed has arrived in printing area 2 is.
  • the locking device 14 also includes a individual slip clutch 15, not shown, known Design type.
  • the drive side of this slip clutch 15 is in the embodiment of the printing press over an endless Drive member 16, for example a toothed belt, driven by an electric motor 17.
  • the electric motor 17 always remains in print jobs, so that the drive side of the slip clutch 15 constantly is rotated.
  • the slip clutch 15 transmits the torque from its drive side to its output side, on which the second coil 3 is located. But if now Locking device 14 abruptly interrupts the tape run, the frictional torque of the slip clutch 15 is no longer sufficient off, the driving force of the electric motor 17 on the driven side to transfer the slip clutch 15. The As a result, slip clutch 15 slips. As soon as the Locking device 14 releases the first coil 1 again the output side of the slip clutch 15 also runs again with, and as a result, the first coil 1 expiring thermal transfer ribbon 4 again on the second Coil 3 wound.
  • the first coil 1 is non-rotatable with an externally toothed Wheel 20 connected.
  • An adjustable latching tooth is located above 21. It is held by a swivel arm 22 and is preferably made in one piece with it.
  • the swivel arm 22 can be pivoted about an axis 24 in the direction of the double arrow 23 will. The is in the process of printing Swivel arm 22 in the rotational position shown in Figure 1. He becomes one in this ineffective position controllable locking member 25 held. Using one of the Control of the printing machine also controllable drive 26, the swivel arm 22 can be moved into the position shown in FIG. effective position are transferred.
  • the lever 27 is preferably an angle lever, whose upper end in the drawing is the locking member 25 forms. As soon as this end is lowered, the follows Swivel arm 22 of this movement, and then engages Lock tooth 21 in the next tooth gap 29.
  • the lever 27 is rotatable about an axis 30.
  • An angular longitudinal slot 31 is located at the corner corner, in which a pin 32 engages. Both are part of it of the eccentric drive 28.
  • the pin 32 is drivable Rotary member 33 attached. But this always leads only about half a turn.
  • the longitudinal slot 31 extends approximately in accordance with FIG Longitudinal direction of the angle leg articulated on the axis 30 34 of the angular lever 27. Is located accordingly the locking member 25 on the free angle leg 35.
  • the Swivel arm 22 with the locking tooth 21 is according to the drawing in the embodiment, a simple, pivotable Lever, which is preferably crowned at its free end Has support element 36, which on top of the locking member 25 forming end face of the free angle leg 35 rests.
  • the articulated angle leg 34 of the pivotable angle lever 27 extended beyond the bearing 30.
  • the resulting extension arm is included 37 designated. It is designed like a hook at its free end, the hook 38 essentially by a is formed laterally open longitudinal slot 39. In these engages a bolt 40 which attaches to the swivel arm 10 is.
  • control for the 180 ° rotation can be reached with With the help of a control disk 41, which rotatably with the rotary member 33 is coupled and one, for example, optically Base working sensor, which is the two radial Can scan edges of the control disk 41. In this area then there is a corresponding control unit for the drive motor 26 of the rotary member 33.

Landscapes

  • Electronic Switches (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Common Mechanisms (AREA)

Claims (11)

  1. Machine à imprimer ayant une tête d'impression (9) disposée de façon à pouvoir se soulever de, et pouvant être pressée, par ressort, contre un contre-rouleau (8), entre ladite tête et le contre-rouleau passent le brin utile (7) d'un ruban d'impression (4) et un moyen d'enregistrement à imprimer, machine dans laquelle est prévu un dispositif de suppression de la pression entre le contre-rouleau (8) et la tête d'impression (9) pendant l'immobilisation du ruban d'impression (4), en quoi le dispositif de suppression de la pression entre le contre-rouleau (8) et la tête d'impression (9) peut être activé pour des intervalles à ne pas imprimer sur le moyen d'enregistrement afin de économiser le ruban d'impression (4), le moyen d'enregistrement continuant à être transporté pendant les intervalles à ne pas imprimer avec arrêt du ruban d'impression (4) et le ruban d'impression (4) s'enroulant sur une première bobine (1), caractérisée en ce que, au moyen d'une commande de la machine d'impression, pendant l'immobilisation du ruban d'impression (4), un dispositif de blocage (14) du ruban d'impression (4) peut être amené sur une position utile et que le ruban d'impression (4) est indirectement blocable par l'immobilisation de la première bobine (1), en quoi l'action du dispositif de blocage (14) coopère avec la première bobine (1).
  2. Machine à imprimer selon la revendication 1, caractérisée en ce que le ruban d'impression (4) s'enroule sur une seconde bobine (3) et qu'un limiteur de couple (15) est intercalé entre un dispositif d'entraínement (17) du ruban d'impression (4) et la bobine (3) entraínée par le dispositif d'entraínement (17) du ruban d'impression (4).
  3. Machine à imprimer selon l'une des revendications 1 ou 2, caractérisée en ce que la première bobine (1) est accouplée à l'épreuve des rotations avec une roue dentée extérieure (20) à laquelle est attribué un ergot d'arrêtage (21) pouvant avancer au moyen de la commande.
  4. Machine à imprimer selon la revendication 3, caractérisée en ce que l'ergot d'arrêtage (21) se trouve sur un bras articulé (22) qu'un élément de blocage (25) peut maintenir dans une position désactivée.
  5. Machine à imprimer selon la revendication 4, caractérisée en ce que l'élément de blocage (25) peut être commuté, au moyen d'un dispositif d'entraínement à commande sélective (26), de sa position de blocage à une position de libération et réciproquement.
  6. Machine à imprimer selon l'une des revendications 4 ou 5, caractérisée en ce que l'élément de blocage (25) se trouve sur un levier (27) posé sur un palier articulé, lequel levier peut s'ajuster au moyen d'un entraínement excentrique (28) constituant l'entraínement à commande.
  7. Machine à imprimer selon la revendication 6, caractérisée en ce qu'une goupille (32) fixée de façon excentrique sur un élément de rotation (33) pouvant être entraíné s'encoche dans une fente longitudinale (31) disposée sur ce même levier, à distance de l'axe de rotation (30) du levier articulé (27).
  8. Machine à imprimer selon la revendication 7, caractérisée en ce que le levier articulé (27) est un levier en forme d'équerre et que la fente longitudinale (31) se trouve dans le secteur de l'angle droit et également qu'elle s'étend longitudinalement sur le bras articulé (34) de l'équerre en quoi le bras d'équerre libre (35) porte ou forme l'élément de blocage (25).
  9. Machine à imprimer selon la revendication 8, caractérisée en ce que le bras d'équerre libre (35) du levier articulé (27) en forme d'équerre prend, en position d'utilisation, une position à peu près verticale et que son extrémité libre forme l'élément de blocage (25), en quoi le bras articulé (22) s'appuie en haut sur l'extrémité libre du bras d'équerre.
  10. Machine à imprimer selon la revendication 9, caractérisée en ce que le bras articulé (22) est un levier à un bras dont l'extrémité libre présente un élément d'appui (36) de préférence bombé , en quoi l'ergot d'arrêtage (21) se trouve entre le palier articulé (24) et l'élément d'appui (36).
  11. Machine à imprimer selon l'une des revendications 8 à 10, caractérisée en ce que le bras d'équerre (34) articulé du levier articulé (27) se prolonge au-delà du palier (30), en quoi le bras de prolongement (37) forme une partie d'un dispositif de réglage de la tête d'impression (9).
EP94113784A 1993-09-24 1994-09-02 Machine à imprimer Expired - Lifetime EP0645248B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4332562 1993-09-24
DE4332562A DE4332562A1 (de) 1993-09-24 1993-09-24 Druckmaschine zum Bedrucken eines Aufzeichnungsträgers mittels eines Thermotransferbands

Publications (3)

Publication Number Publication Date
EP0645248A2 EP0645248A2 (fr) 1995-03-29
EP0645248A3 EP0645248A3 (fr) 1996-02-07
EP0645248B1 true EP0645248B1 (fr) 1998-02-04

Family

ID=6498538

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94113784A Expired - Lifetime EP0645248B1 (fr) 1993-09-24 1994-09-02 Machine à imprimer

Country Status (3)

Country Link
US (1) US5542769A (fr)
EP (1) EP0645248B1 (fr)
DE (2) DE4332562A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5980137A (en) * 1997-01-13 1999-11-09 Brother Kogyo Kabushiki Kaisha Printer for facsimile machine
WO1999043504A1 (fr) * 1998-02-27 1999-09-02 Haug, Werner Dispositif de transport pour ruban-encreur
KR20000047126A (ko) * 1998-12-31 2000-07-25 강병호 팩시밀리의 열전사리본의 이송억제장치
US6840689B2 (en) * 1999-05-27 2005-01-11 Printronix, Inc. Thermal printer with improved transport, drive, and remote controls
DE10218842B4 (de) * 2002-04-23 2005-03-17 Bizerba Gmbh & Co. Kg Druckvorrichtung und Verfahren zum Bedrucken eines Informationsträgers
US7128236B2 (en) * 2002-09-13 2006-10-31 Avery Dennison Corporation Versatile label sheet and dispenser
US6991130B2 (en) * 2002-09-13 2006-01-31 Avery Dennison Corporation Versatile label sheet and dispenser
US7231952B2 (en) * 2003-04-17 2007-06-19 Brady Worldwide, Inc. Label wrapper assembly
US6875304B2 (en) * 2003-04-17 2005-04-05 Brady Worldwide, Inc. Label applicator
US7014139B2 (en) * 2003-04-17 2006-03-21 Brady Worldwide, Inc. Unwind spool assembly
US7178572B2 (en) * 2003-04-17 2007-02-20 Brady Worldwide, Inc. Label wrapper block assembly
US7070347B2 (en) * 2003-08-12 2006-07-04 Brady Worldwide, Inc. Printer with a pivoting gear mechanism
DE102008025076B4 (de) * 2008-05-26 2015-12-03 Iht Automation Gmbh & Co. Kg Antriebsvorrichtung
CN103640340B (zh) * 2013-12-05 2016-09-14 北京亿赫伟信科技发展有限公司 热转印打印机

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
JPS5662184A (en) * 1979-10-26 1981-05-27 Canon Inc Printer
JPH0139568Y2 (fr) * 1980-12-11 1989-11-28
JPS60101151U (ja) * 1983-12-16 1985-07-10 アルプス電気株式会社 サ−マルプリンタ
DE3715523A1 (de) * 1987-05-09 1988-11-17 Uniprint As Vorrichtung zum bedrucken von etiketten
JPS6472871A (en) * 1987-09-16 1989-03-17 Nippon Electric Eng Printer device with paper leading-end detector
DE3907415A1 (de) * 1989-03-08 1990-09-13 Protechno Entwicklungsbuero Gm Thermodrucker fuer ausweiskarten
DE4108172A1 (de) * 1991-03-11 1992-09-17 Robotron Bueromasch Ag Sparvorrichtung fuer einen thermotransferdrucker

Also Published As

Publication number Publication date
EP0645248A2 (fr) 1995-03-29
DE59405213D1 (de) 1998-03-12
US5542769A (en) 1996-08-06
DE4332562A1 (de) 1995-03-30
EP0645248A3 (fr) 1996-02-07

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