EP2060396A1 - Vorrichtung zur Tintenrückgewinnung für Wartungsstation - Google Patents

Vorrichtung zur Tintenrückgewinnung für Wartungsstation Download PDF

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Publication number
EP2060396A1
EP2060396A1 EP08168472A EP08168472A EP2060396A1 EP 2060396 A1 EP2060396 A1 EP 2060396A1 EP 08168472 A EP08168472 A EP 08168472A EP 08168472 A EP08168472 A EP 08168472A EP 2060396 A1 EP2060396 A1 EP 2060396A1
Authority
EP
European Patent Office
Prior art keywords
ink
ejection nozzles
recovery device
nozzles
flow conduit
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
EP08168472A
Other languages
English (en)
French (fr)
Other versions
EP2060396B1 (de
Inventor
Régis Desire
Stéphane Le Gallo
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.)
Quadient Technologies France SA
Original Assignee
Neopost Technologies SA
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 Neopost Technologies SA filed Critical Neopost Technologies SA
Publication of EP2060396A1 publication Critical patent/EP2060396A1/de
Application granted granted Critical
Publication of EP2060396B1 publication Critical patent/EP2060396B1/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517—Cleaning of print head nozzles
    • B41J2/1652—Cleaning of print head nozzles by driving a fluid through the nozzles to the outside thereof, e.g. by applying pressure to the inside or vacuum at the outside of the print head
    • B41J2/16523—Waste ink transport from caps or spittoons, e.g. by suction
    • 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
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/1721—Collecting waste ink; Collectors therefor
    • 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
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/1721—Collecting waste ink; Collectors therefor
    • B41J2/1742—Open waste ink collectors, e.g. ink receiving from a print head above the collector during borderless printing
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
    • G07B17/00—Franking apparatus
    • G07B17/00459—Details relating to mailpieces in a franking system
    • G07B17/00508—Printing or attaching on mailpieces
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
    • G07B17/00—Franking apparatus
    • G07B17/00459—Details relating to mailpieces in a franking system
    • G07B17/00508—Printing or attaching on mailpieces
    • G07B2017/00516—Details of printing apparatus
    • G07B2017/00524—Printheads
    • G07B2017/00532—Inkjet

Definitions

  • the present invention relates exclusively to the field of mail processing and more particularly relates to an ink recovery device in a franking machine of mail items using an inkjet printing technology.
  • the ink jet nozzles need to be cleaned periodically and it is necessary to spit ink during this cleaning so as not to leave dried ink in the nozzles.
  • the life of the print head of a franking machine can currently reach about 1.5 million cycles, this periodic projection of ink represents a relatively large amount of residual ink (typically, it is recommended to spit 4000 droplets at each cleaning cycle) which in current machines is accumulated on a flat sponge placed in a tank mounted at the maintenance station of the print head.
  • the fine ink droplets ejected by the nozzles are recovered and flow in thick drops before the aerosol phenomena of the prior art are created.
  • the ink projections are avoided and there is no more smudging neither the maintenance station nor the franking machine including its electronic circuits and its cowling.
  • said determined distance between said ink ejection nozzles and said smooth axis is between 3 and 5 mm and the diameter of said smooth axis is between 1 and 2 mm.
  • said flow duct has two parallel axes united to form a pin with two parallel open branches, the curved junction portion of the two branches of said pin being fixedly held in said flow conduit by a fixing stud.
  • the present invention also relates to a franking machine maintenance station comprising the aforementioned ink recovery tank.
  • the figure 3 is a partial schematic view of an ink recovery device of the prior art implemented in a maintenance station of a franking machine comprising two inkjet printing modules 12, 14 mounted at side and offset in two perpendicular directions.
  • a reservoir of ink recovery 16 provided with its absorbent foam or sponge 18 is disposed below these two inkjet printing modules.
  • each print module has two parallel rows of ink ejection nozzles 12A, 12B; 14A, 14B, each typically having 250 nozzles.
  • the reservoir has a relatively large volume, which forces it away from the ink ejection nozzles.
  • two ducts 22, 24 in the form of a chimney, of substantially rectangular section, each arranged at the right of one of these two modules and ensuring the flow of the ink of the nozzles ejection to the sponge of the tank.
  • the ejection nozzles are separated from the top of these ducts simply by an empty space 20 of one to two millimeters sufficient to allow the displacement of the printing modules.
  • the ducts of course have a section sized to grip closer to the two rows of nozzles that includes each print module.
  • the ejection nozzles of these modules are caused to spit out ink and thus to spray this ink through the flow ducts to the reservoir which then faces them. .
  • the ink is also spat at the start of the machine and after a hibernation.
  • this projection a priori directed because of the flow ducts can not avoid the aerosol phenomena that take advantage of the space 20 will lead very quickly to the smearing of the maintenance station and the various elements of the franking machine which the surrounded.
  • the inventors In practice, with a cleaning cycle for 300 prints, the inventors have found that it was sufficient to perform 30,000 prints to obtain a total smearing of the maintenance station.
  • each chimney is pierced with openings 22A, 22B, 22C, 22D; 24A, 24B, 24C, 24D on two opposite sides.
  • the two axes can be joined in the manner of a pin having two open branches 26A, 26B; 28A, 28B.
  • This pin being fixedly held at the curved junction of its two branches by a fixing stud 22E, 24E extending from the outer face of each conduit.
  • the small gap between the ejection nozzles and the pins makes it possible to recover the ink before the existing aerosol phenomena are created with the device of the art prior. Indeed, once ejected the fine ink droplets crash on the pins, agglutinate to form thicker ink drops that flow around them and will eventually fall by gravity directly into the reservoir or flow along their respective conduit.
  • the perfectly smooth surface of the pin allows fast flow and prevents the formation of stalagmites and its small diameter does not cause a delay in the formation of ink drops.
  • the diameter of the pin is adapted to the diameter of the nozzles and the distance between the nozzles and the pin. If the diameter of the pin is too small or the pin is too far from the nozzles, the dispersion of the droplets will not be slowed down. If this diameter is too large, the formation of droplets will be disturbed and when the print module has two rows of nozzles, an ink bridge will be established between the two pins arranged below each of these two rows and then too close to each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Ink Jet (AREA)
EP08168472A 2007-11-13 2008-11-06 Vorrichtung zur Tintenrückgewinnung für Wartungsstation Expired - Fee Related EP2060396B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0758983A FR2923410A1 (fr) 2007-11-13 2007-11-13 Dispositif de recuperation d'encre pour station de maintenance

Publications (2)

Publication Number Publication Date
EP2060396A1 true EP2060396A1 (de) 2009-05-20
EP2060396B1 EP2060396B1 (de) 2010-09-29

Family

ID=39596815

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08168472A Expired - Fee Related EP2060396B1 (de) 2007-11-13 2008-11-06 Vorrichtung zur Tintenrückgewinnung für Wartungsstation

Country Status (5)

Country Link
US (1) US7984964B2 (de)
EP (1) EP2060396B1 (de)
CA (1) CA2644324A1 (de)
DE (1) DE602008002801D1 (de)
FR (1) FR2923410A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8388102B2 (en) * 2011-03-30 2013-03-05 Hewlett-Packard Development Company, L.P. Image forming apparatus, maintenance assembly usable with image forming apparatus, and method thereof
US10120465B2 (en) * 2014-05-14 2018-11-06 Linfiny Corporation Information processing apparatus, information processing method, and program

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0705699A1 (de) * 1994-09-30 1996-04-10 Hewlett-Packard Company Venturi-Entladungssystem zur Beherrschung des Tintenstrahl-Aerosols
US20030067505A1 (en) * 2001-09-13 2003-04-10 Seiko Epson Corporation Liquid jet apparatus
US6585347B1 (en) * 2000-01-31 2003-07-01 Hewlett-Packard Company Printhead servicing based on relocating stationary print cartridges away from print zone
US20030142150A1 (en) 2002-01-31 2003-07-31 Barton E. Lewis Spill resistant spittoon for printer service stations
EP1403056A1 (de) * 2002-09-27 2004-03-31 Hewlett-Packard Development Company, L.P. Flüssigkeitsgefäss mit Tintenumleitungsoberfläche

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6357853B1 (en) * 2000-02-14 2002-03-19 Lexmark International, Inc. Waste ink management

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0705699A1 (de) * 1994-09-30 1996-04-10 Hewlett-Packard Company Venturi-Entladungssystem zur Beherrschung des Tintenstrahl-Aerosols
US6585347B1 (en) * 2000-01-31 2003-07-01 Hewlett-Packard Company Printhead servicing based on relocating stationary print cartridges away from print zone
US20030067505A1 (en) * 2001-09-13 2003-04-10 Seiko Epson Corporation Liquid jet apparatus
US20030142150A1 (en) 2002-01-31 2003-07-31 Barton E. Lewis Spill resistant spittoon for printer service stations
EP1403056A1 (de) * 2002-09-27 2004-03-31 Hewlett-Packard Development Company, L.P. Flüssigkeitsgefäss mit Tintenumleitungsoberfläche

Also Published As

Publication number Publication date
US7984964B2 (en) 2011-07-26
EP2060396B1 (de) 2010-09-29
US20090128598A1 (en) 2009-05-21
DE602008002801D1 (de) 2010-11-11
CA2644324A1 (fr) 2009-05-13
FR2923410A1 (fr) 2009-05-15

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