EP0461118B1 - Dispositif de transport de feuilles dans une imprimante a l'encre - Google Patents

Dispositif de transport de feuilles dans une imprimante a l'encre Download PDF

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Publication number
EP0461118B1
EP0461118B1 EP90902147A EP90902147A EP0461118B1 EP 0461118 B1 EP0461118 B1 EP 0461118B1 EP 90902147 A EP90902147 A EP 90902147A EP 90902147 A EP90902147 A EP 90902147A EP 0461118 B1 EP0461118 B1 EP 0461118B1
Authority
EP
European Patent Office
Prior art keywords
printed
recording sheet
pair
rollers
ink
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
EP90902147A
Other languages
German (de)
English (en)
Other versions
EP0461118A1 (fr
Inventor
Harald Schulz
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0461118A1 publication Critical patent/EP0461118A1/fr
Application granted granted Critical
Publication of EP0461118B1 publication Critical patent/EP0461118B1/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
    • B41J11/007—Conveyor belts or like feeding devices

Definitions

  • the invention relates to a device for transporting recording sheets in an ink printer.
  • the invention is therefore based on the object of specifying a device for transporting recording sheets in an ink printer, in which smearing of the printed image information is prevented, the construction and energy consumption of which are particularly suitable for small battery-operated ink printers and a secure storage of the recording sheets guaranteed.
  • this object is achieved by a device of the type mentioned at the beginning with a pair of conveyor rollers arranged directly below the printing zone of an ink printing unit for transporting the recording sheet to be printed in each case past the ink printing unit and with a printed recording sheet on its lower edge of the sheet immediately after leaving the Gripping device gripping pair of conveyor rollers and moving out of the pressure zone into a storage position.
  • the gripping device grips the recording sheet at its lower sheet edge, contact with the printed side of the recording sheet is avoided, so that blurring of the printed image is avoided even with a recording sheet which is completely, that is to say without restricting the printing area.
  • the gripping device reliably guides the recording sheet out of the Printing zone reached to the storage position, so that the printed recording sheets are deposited in the storage position with high security.
  • the gripping device is set in motion each time after printing on a recording sheet in response to a form feed signal, in order to convey the recording sheet into the storage position.
  • the gripping device can have its own drive, which is started with the side feed signal.
  • the gripping device can preferably be coupled to the pair of conveyor rollers by means of a clutch which can be controlled as a function of the side feed signal.
  • the gripping device consists of at least one belt guided over two deflection rollers with an external gripping hook.
  • This conveyor belt-like gripping device is characterized by a minimal expenditure of parts and enables the transport of the recording sheet in the area between the two deflection rollers, of which one lower deflection roller is arranged in the area of the printing zone of the ink printing unit and the other upper deflection roller is arranged in the area of the storage position.
  • the upper of the two deflecting rollers is preferably arranged at an elevated level relative to the storage position, the storage position being located immediately behind the upper deflecting roller as viewed in the direction of rotation, so that the printed recording sheet is lifted over the upper deflection roller by the gripping hook and falls into the lower storage position without being able to fall out of it again.
  • the lower of the two deflection rollers is preferably loosely seated on an axis common to a conveyor roller of the conveyor roller pair, the coupling being a driving clutch.
  • a contact surface for the recording sheets to be printed is formed in the printing zone and that the at least one belt is in sections in each case a groove-like recess of the contact surface is guided.
  • Figures 1 and 2 show the parts of an ink printer essential for the explanation of the invention in longitudinal section.
  • Recording sheets 1 to be individually printed are stored as a sheet stack 2 in a storage cassette 3 which is inserted in an inclined position in a housing part 4 of the ink printer which is only partially visible here.
  • the sheet stack 2 is arranged by a spring in the bottom area of the storage cassette 3 Support plate 5 pressed against a drivable sheet separation roller 6, which serves to pull the top recording sheet 1 from the sheet stack 2 and to transport it between two adjacent rollers 7 and 8, which, viewed in the direction of conveyance 9 of the sheet separation roller 6, connect to the supply cassette 3.
  • the rollers 7 and 8 serve to deflect the recording sheet 1 into a guide trough 10 which is formed in the bottom region of the housing part 4 and which guides the recording sheet 1 upwards through a guide element 11 into the feed gap of a pair of conveyor rollers 12 and 13.
  • the pair of conveyor rollers 12 and 13 is arranged directly below the printing zone 14 of an ink printing unit 15 and serves to move the recording sheet 1 past the ink printing unit 15 at a defined line feed speed upwards through the printing zone 14, during which the recording sheet 1 is printed by the ink printing unit 15.
  • the conveyor roller pair 12 and 13 is driven by a drive, not shown here, at a uniform rotational speed in the direction of rotation denoted by 16.
  • the recording sheet 1 to be printed lies flat against a contact surface 17 at a defined distance from the ink printing unit 15, so that a uniform print image is produced on the recording sheet 1.
  • a gripping device 20 is used in the form of two belt drives spaced apart from one another in the viewing direction by a distance that is smaller than the width of the recording sheet 1, of which only the front one is visible.
  • This consists of a belt 21, which is guided over two deflection rollers 22 and 23 and has an external extension in the form of a gripping hook 24.
  • the lower deflection roller 22 sits loosely on an axis 25 common to the conveyor roller 12 and is over a controllable driving clutch 26, only indicated by dashed lines, as a function of a side feed signal (form feed signal) FF, can be coupled to the drive for the conveyor roller 22.
  • a side feed signal form feed signal
  • the belt 21 extends in sections between the two deflecting rollers 22 and 23 in a groove-like recess 27 in the contact surface 17.
  • the upper deflecting roller 23 is raised relative to the storage position 18 in the storage basket 19 arranged, which is seen in the direction of rotation of the deflection roller 23 immediately behind it.
  • a recording sheet 1 to be printed is pulled off the sheet stack 2 by driving the sheet separating roller 6 and is guided between the rollers 7 and 8 along the guide trough 10 and the guide element 11 into the feed nip of the conveyor roller pair 12, 13.
  • the pair of conveyor rollers 12, 13 conveys the recording sheet 1 at a defined line feed speed past the ink printing unit 15 which is printing the recording sheet 1 in the meantime.
  • the lower deflection roller 22 is decoupled from the conveyor roller 12 so that the gripping device 20 remains inactivated.
  • the lower deflection roller 22 is coupled to the conveyor roller 12 via the driving clutch 26 activated by the side feed signal FF, so that the belt 21 is driven, with its gripping hook 24 the printed recording sheet 1 is grasped at its lower sheet edge and transported out of the printing zone 14 without coming into contact with the printed image.
  • the recording sheet 1 is lifted over the deflection roller 23 and then falls into the storage position 18 in the storage basket 19.

Landscapes

  • Ink Jet (AREA)
  • Handling Of Cut Paper (AREA)

Abstract

Dispositif de transport de feuilles dans une imprimante à l'encre. Un des problèmes inhérents à l'impression à l'encre est qu'il faut attendre un certain temps après l'impression d'une feuille pour que l'image imprimée devienne assez résistante à l'essuyage pour que le côté imprimé de la feuille puisse entrer en contact avec d'autres objets sans barbouiller le papier. Afin de transporter des feuilles nouvellement imprimées dans une imprimante à l'encre sans barbouiller l'image imprimée, une paire de rouleaux de transport (12, 13) pour transporter la feuille (1) à imprimer jusqu'au mécanisme (15) d'impression à l'encre est agencée immédiatement au-dessous de la zone d'impression (14) du mécanisme (15) d'impression à l'encre. Un dispositif de saisie (20) saisit la feuille imprimée (1) par son bord inférieur dès qu'elle a quitté la paire de rouleaux de transport (12, 13), l'enlève de la zone d'impression (14) et la transporte vers une position de sortie (18).

Claims (6)

  1. Dispositif de transport de feuilles d'enregistrement (1) dans une imprimante à encre, comportant un couple (12,13) de rouleaux d'entraînement, disposés directement en-dessous de la zone d'impression (14) d'un mécanisme d'impression à encre (15) et destinés à faire passer la feuille d'enregistrement (1), à imprimer, devant le mécanisme d'impression à encre (15), et un dispositif de préhension (20) qui prend le bord inférieur de la feuille d'enregistrement imprimée (1) immédiatement après qu'elle a quitté le couple de rouleaux d'entraînement (12,13), et la transfère de la zone d'impression (14) à une position de dépôt (18).
  2. Dispositif suivant la revendication 1, caractérisé par le fait que le dispositif de préhension (20) peut être accouplé aux couples de rouleaux d'entraînement (12,13) par l'intermédiaire d'un accouplement (26) commandé en fonction d'un signal (FF) d'avance de pages.
  3. Dispositif suivant la revendication 1 ou 2, caractérisé par le fait que le dispositif de préhension (20) est constitué d'au moins une courroie (21) passant sur deux rouleaux de renvoi (22 et 23) et comportant un crochet extérieur de préhension (24).
  4. Dispositif suivant la revendication 3, caractérisé par le fait que le rouleau supérieur deux rouleaux de renvoi (23) surélevé par rapport à la position de dépôt (18) et la position de dépôt (18) est, considéré dans le sens de rotation du rouleau supérieur, juste en aval de ce rouleau de renvoi supérieur (23).
  5. Dispositif suivant l'une des revendications 2 et 3 ou 2 et 4, caractérisé par le fait que le rouleau inférieur des deux rouleaux de renvoi (22) est monté fou sur un axe (25) commun à un rouleau d'entraînement (12) du couple de rouleau d'entraînement (12,13) et l'accouplement (26) est un accouplement d'entraînement.
  6. Dispositif suivant l'une des revendications 3 à 5, caractérisé par le fait que dans la zone d'impression (14) est prévue, une surface d'application (17) des feuilles d'enregistrement à imprimer (1) et au moins une courroie (21) est guidée, par tronçons, dans un évidement en forme de rainure (27) de la surface d'application (17).
EP90902147A 1989-03-03 1990-02-01 Dispositif de transport de feuilles dans une imprimante a l'encre Expired - Lifetime EP0461118B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3907329A DE3907329A1 (de) 1989-03-03 1989-03-03 Vorrichtung zum transport von aufzeichnungsblaettern in einem tintendrucker
DE3907329 1989-03-03

Publications (2)

Publication Number Publication Date
EP0461118A1 EP0461118A1 (fr) 1991-12-18
EP0461118B1 true EP0461118B1 (fr) 1993-07-14

Family

ID=6375739

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90902147A Expired - Lifetime EP0461118B1 (fr) 1989-03-03 1990-02-01 Dispositif de transport de feuilles dans une imprimante a l'encre

Country Status (4)

Country Link
US (1) US5248210A (fr)
EP (1) EP0461118B1 (fr)
DE (2) DE3907329A1 (fr)
WO (1) WO1990009891A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970000610B1 (ko) * 1992-06-04 1997-01-16 가부시키가이샤 테크 프린터의 용지배출장치
IT1257545B (it) * 1992-06-15 1996-01-30 Olivetti & Co Spa Apparecchiatura facsimile con stampante a getto d'inchiostro.
US5399038A (en) * 1993-03-18 1995-03-21 Addmaster Corporation Dual line slip printer
US6848850B2 (en) * 2001-10-24 2005-02-01 Matsushita Electric Industrial Co., Ltd. Recording apparatus
US7021755B2 (en) * 2002-09-30 2006-04-04 Canon Kabushiki Kaisha Printing apparatus
EP1572566B1 (fr) * 2002-11-26 2012-01-18 Ricoh Company, Ltd. Appareil de formation d'images a fonctionnement stable equipe d'un mecanisme perfectionne de transport et d'ejection de papier
US8303101B2 (en) 2010-07-15 2012-11-06 Hewlett-Packard Development Company, L.P. Apparatus for printing on a medium
US8449107B2 (en) * 2010-10-04 2013-05-28 Seiko Epson Corporation Recording apparatus

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1135140A (en) * 1909-12-23 1915-04-13 Underwood Typewriter Co Type-writing machine.
DE2005616A1 (de) * 1970-02-07 1971-08-12 Steinhilber H Transportsteuerung fur Schreib u dgl Maschinen
US4207579A (en) * 1979-01-08 1980-06-10 The Mead Corporation Reciprocating paper handling apparatus for use in an ink jet copier
US4340314A (en) * 1980-06-24 1982-07-20 Datamarc, Inc. Envelope feeding apparatus
US4431323A (en) * 1981-08-05 1984-02-14 Kulow Products, Inc. Envelope feeder method and apparatus
CH660171A5 (de) * 1983-06-09 1987-03-31 Ferag Ag Verfahren und vorrichtung zum zwischenspeichern von in einem schuppenstrom anfallenden druckprodukten, wie zeitungen, zeitschriften oder dgl.
US4865305A (en) * 1983-07-25 1989-09-12 Toshio Momiyama Paper sheet feeding apparatus
US4721968A (en) * 1983-09-22 1988-01-26 Canon Kabushiki Kaisha Ink jet transparency-mode recorder
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
US4540298A (en) * 1984-11-28 1985-09-10 Rowan Corporation Manually loaded envelope feeder
SE8501917D0 (sv) * 1985-04-19 1985-04-19 Fleximark Ab Anordning for merkning av foremal
JPS63127944A (ja) * 1986-11-19 1988-05-31 Minolta Camera Co Ltd シ−トの搬送装置
JP2576508B2 (ja) * 1987-06-11 1997-01-29 三菱電機株式会社 サ−マルプリンタ

Also Published As

Publication number Publication date
EP0461118A1 (fr) 1991-12-18
DE59001974D1 (de) 1993-08-19
WO1990009891A1 (fr) 1990-09-07
US5248210A (en) 1993-09-28
DE3907329A1 (de) 1990-09-06

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