EP0786349A1 - Reinigungsvorrichtung für eine Tintenstrahlfrankiermaschine - Google Patents
Reinigungsvorrichtung für eine Tintenstrahlfrankiermaschine Download PDFInfo
- Publication number
- EP0786349A1 EP0786349A1 EP97400145A EP97400145A EP0786349A1 EP 0786349 A1 EP0786349 A1 EP 0786349A1 EP 97400145 A EP97400145 A EP 97400145A EP 97400145 A EP97400145 A EP 97400145A EP 0786349 A1 EP0786349 A1 EP 0786349A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cleaning
- cleaning device
- motor
- lever
- franking machine
- 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
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 52
- 238000007790 scraping Methods 0.000 claims abstract description 16
- 230000009471 action Effects 0.000 claims abstract description 5
- 238000007639 printing Methods 0.000 claims description 23
- 244000027321 Lychnis chalcedonica Species 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 claims description 2
- 238000007641 inkjet printing Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- B41J2/16535—Cleaning of print head nozzles using wiping constructions
- B41J2/16538—Cleaning of print head nozzles using wiping constructions with brushes or wiper blades perpendicular to the nozzle plate
-
- 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
- B41J2/16535—Cleaning of print head nozzles using wiping constructions
- B41J2/16544—Constructions for the positioning of wipers
-
- 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
- G07B2017/00556—Ensuring quality of print
Definitions
- the present invention relates to a maintenance device for cleaning a printing module of an ink jet print head of a franking machine, and in particular a device for maintenance by scraping surfaces ejecting at least one row of nozzles from this printing module.
- the critical problem of the quality of the printing provided by the printing module that is to say by the ejection nozzles of the print head incorporating this module.
- the nozzles are notably subjected to air, which can cause the ink contained in the printing module to dry.
- the quality of printing is particularly essential in the field of mail processing where the printed postal imprint represents a monetary value.
- the object of the present invention is a maintenance device which allows regular cleaning of the print head ejection nozzles of a franking machine, in order to rid them of dust or ink particles, possibly dry. , which could cover the ends and therefore reduce their effectiveness.
- Another object of the invention is to provide a device which very easily adapts to a base of the franking machine.
- Yet another object of the invention is to provide a device which can be used in addition to a device for protecting the printing module also developed by the applicant and which is the subject of a patent application filed on same day.
- a device for cleaning the external surfaces of a row of ejection nozzles integrated into at least one printing module of an inkjet printing head of a franking machine a base of which comprises cleaning means for scraping these ink ejection surfaces, characterized in that these cleaning means are mounted on a support means which can move under the action of motor means, via a connecting rod-crank system, between a first position in which the cleaning means are separated from the printing module and a second position in which the cleaning means have scraped the external surfaces of the ejection nozzles.
- the cleaning means mounted at one end of an articulated scanning lever comprise compensation support means, with respective springs, each carrying a set of independent scraping brushes, to transform the initial circular movement of these support means into a rectilinear movement of the brushes in contact with the ejection surfaces of the printing module.
- each set of brushes has an active end surface with two sharp edges to allow scraping of the ejection surfaces of the printing module when moving the support means from said first position to said second position and vice versa.
- the vertical plane passing through an axis of articulation of the scanning lever is inclined at a predetermined angle a with respect to the longitudinal plane of a row of ejection nozzles of the printing module, so that each elementary brush belonging to a given set of brushes scrapes only one nozzle and only one of a given row.
- the connecting rod-crank system is formed on the one hand by a rod connected to the other end of the articulated sweeping lever and on the other hand by a Maltese cross driven in rotation by a driving shaft which is itself driven in rotation by the motor means.
- the drive of the Maltese cross by the drive means is provided by means of a drive gear mounted on the drive shaft and a set of toothed gears connecting this drive wheel to the drive means.
- the motor means comprise either a first energy storage motor means formed by a spring which is tensioned during the movement of the support means from said first to said second position and expands during the return movement from said second position to said first position or a second motor means which controls the movement of the support means from said first to said second position and simultaneously ensures energy recharging of the first motor means.
- the cleaning device may further comprise a cam mounted on the driving shaft, driven in rotation with it, and which cooperates with means for holding the support means in position in said first position.
- These means for holding the support means in said first position comprise a latching lever cooperating with a shoulder of the cam and actuated by an electromagnet which is automatically deactivated during a cut in the power supply to the franking machine.
- the snap lever is controlled by the electromagnet via a link.
- the invention also relates to any franking machine provided with an ink jet print head and a base comprising a cleaning device as described above.
- FIGS. 1 to 3 show a cleaning device according to the invention in two distinct operating positions.
- This device 2 incorporated into a base 4 of a franking machine comprises a body 6 on which cleaning means 8 can be mounted for cleaning by scraping a printing module 10 from a jet jet printing head. ink 12 of this franking machine.
- the cleaning means 8 In the position of FIGS. 1 and 2, the cleaning means 8 occupy an initial position released from a document transport path 14.
- the cleaning means are mounted on a support means 20 which can be moved along a mainly circular path (which will be described in more detail with reference to FIG. 4), from the initial position to a final position in which the cleaning means scraping of the printing module, by means of a rod-crank drive system 22.
- the rod part of this system consists of a rod 24 whose length can be adjustable as a function of the desired displacement distance for the cleaning means and a first end of which is fixed to the support means 20, and the crank part, which is articulated at a second end of this link, consists of a Maltese cross 26 of a conventional assembly known as a "cross of Malta "also comprising a driving shaft 28 on which are mounted a driving disc provided with an eccentric pin or lug 30 and a brake disc and whose axis of rotation 32 is parallel to the axis of rotation 34 of the Maltese cross.
- the sliding of the lug 30 in a radial groove 36 practiced at one of the arms of the Maltese cross 26 allows it to be driven only on a fraction of a turn during a complete rotation of the disc coach.
- the drive disc which is secured by a pin 38 of a drive toothed wheel 40 is itself rotated, through a set of toothed pinions 42, or from a first drive means 44 constituted by a simple rechargeable energy accumulator such as an elastic element or else a suspended mass, during the movement from said second position to said first position, ie from a second drive means 54, during the movement from said first position to said second position (see in particular Figure 2).
- the drive wheel 40 can be maintained in a determined position, corresponding for example to the initial position of the cleaning means, by retaining means formed by a latching lever 46 engaged with an associated shoulder of a cam 48 secured to this wheel.
- the release of the latching lever 46 is ensured by an electromagnet 50 which acts on a link 52 secured to this lever.
- the support means 20 on which the cleaning means 8 are arranged comprises an articulated scanning lever 56, having a stirrup shape, and at the upper end of which are mounted compensation support means 58, 60 (one per row of ejection nozzles) with respective springs 62, 64 each carrying a set of independent scraping brushes 66, 68 whose corresponding active end surface has two sharp edges 70, 72 to allow scraping in the two directions of movement of the means support.
- the vertical plane passing through the hinge axis 74 of the lever 56 is advantageously inclined at an angle a relative to the longitudinal plane of the rows of ejection nozzles of the printing module 10 so that each brush elementary belonging to a given set of brushes scrapes only one nozzle and only one of a determined row.
- the compensation means are designed to transform the circular displacement of the active ends 70, 72 of the scraper blades into a rectilinear displacement, parallel to the nozzle ejection surfaces, when these brushes contact the external surface of the nozzles so that that they do not undergo any crushing and thus keep their maximum scraping efficiency.
- FIG. 4 illustrates this transformation of movement well with the two graphs 76, 78 which respectively show, for a round trip of the support means 20, the trajectories of the location of the points of the end of the support 58 and that of the active end a brush 66 mounted on this support.
- the operation of the device is as follows.
- the second motor means 54 is actuated, which drives the cam 48 in a counterclockwise direction while simultaneously arming the motor spring 44.
- this cam associated with the pin 30 drives the Maltese cross 46 which by means of the connecting rod 24 actuates the articulation lever 56 so as to pivot the cleaning means 8 from the initial released position to the final active position after scraping the print module.
- An end-of-travel means (not shown) is of course provided for detecting this final position and then controlling the stopping of the second motor 54.
- the motor spring 44 can relax, which results in a reversal of the movements previous, that is to say a rotation in the opposite direction of the cam 48 which returns the Maltese cross 26 to its first position and therefore also the cleaning means 8, by means of the link 24 and the articulation lever 56.
- the return position is naturally limited by the relaxation of the spring 44 which returns to its initial rest position.
- the mainspring 44 will preferably be initially tensioned.
- the electromagnet 50 permanently pulls, via the link 52, the latching lever 46, which prevents rotation along F of cam 48 and thus fixes the initial position of the cleaning means 8. In this case, starting the cleaning phase described above will cause additional tension of the spring 44.
- the scraping of the nozzles is carried out both during the outward journey (from the released position to the final active position) by the edges 70 and during the return journey (from the final active position to the released position ) by the edges 72.
- a person skilled in the art is capable of implementing the complementary means not described in detail, necessary to limit the sudden movements of the articulation lever 56 or the overcurrents of the second motor 54, in particular when it is stopped.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Ink Jet (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9600923A FR2744060B1 (fr) | 1996-01-26 | 1996-01-26 | Dispositif de nettoyage de machine a affranchir a jet d'encre |
FR9600923 | 1996-01-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0786349A1 true EP0786349A1 (de) | 1997-07-30 |
EP0786349B1 EP0786349B1 (de) | 1999-08-18 |
Family
ID=9488508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97400145A Expired - Lifetime EP0786349B1 (de) | 1996-01-26 | 1997-01-23 | Reinigungsvorrichtung für eine Tintenstrahlfrankiermaschine |
Country Status (4)
Country | Link |
---|---|
US (1) | US5880755A (de) |
EP (1) | EP0786349B1 (de) |
DE (1) | DE69700411T2 (de) |
FR (1) | FR2744060B1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0931657A1 (de) * | 1998-01-15 | 1999-07-28 | Hewlett-Packard Company | Anordnung zum Anbringen eines Tintenlösungsmittels für Tintenstrahldruckköpfe |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6464326B1 (en) | 1999-12-03 | 2002-10-15 | Hewlett-Packard Company | Wiping apparatus for an ink cartridge |
ATE273138T1 (de) * | 2000-02-23 | 2004-08-15 | Frama Ag | Frankiermaschine |
US6536874B1 (en) * | 2002-04-12 | 2003-03-25 | Silverbrook Research Pty Ltd | Symmetrically actuated ink ejection components for an ink jet printhead chip |
FR2858581B1 (fr) * | 2003-08-06 | 2005-11-04 | Neopost Ind | Dispositif de nettoyage au vol de buses d'ejection d'encre |
US8128195B2 (en) * | 2009-01-14 | 2012-03-06 | Hewlett-Packard Development Company, L.P. | Cross-wipe cleaning of page-wide array printing |
CN102218846B (zh) * | 2011-05-11 | 2014-01-08 | 浙江迦南科技股份有限公司 | 一种挤压装置的三面可调式刮刀 |
EP2620287B1 (de) | 2012-01-25 | 2019-01-09 | Neopost Technologies | Wischvorrichtung für eine Tintenstrahlfrankiermaschine |
CN112402868B (zh) * | 2020-11-10 | 2021-11-30 | 南京涵铭置智能科技有限公司 | 具有清洁功能的防火自动喷淋器的工作方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8205426U1 (de) * | 1982-02-26 | 1986-08-21 | Siemens AG, 1000 Berlin und 8000 München | Abdeck- und Reinigungsvorrichtng für Tintenschreibköpfe |
JPH01195048A (ja) * | 1988-01-29 | 1989-08-04 | Canon Inc | インクジェット記録装置 |
JPH0245156A (ja) * | 1988-08-05 | 1990-02-15 | Alps Electric Co Ltd | 記録装置 |
EP0410691A1 (de) * | 1989-07-25 | 1991-01-30 | Seiko Instruments Inc. | Abdeckeinrichtung eines Tintenstrahldruckkopfes |
EP0416849A2 (de) * | 1989-09-04 | 1991-03-13 | Neopost Limited | Frankiermaschine |
-
1996
- 1996-01-26 FR FR9600923A patent/FR2744060B1/fr not_active Expired - Fee Related
-
1997
- 1997-01-23 DE DE69700411T patent/DE69700411T2/de not_active Expired - Fee Related
- 1997-01-23 EP EP97400145A patent/EP0786349B1/de not_active Expired - Lifetime
- 1997-01-24 US US08/788,705 patent/US5880755A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8205426U1 (de) * | 1982-02-26 | 1986-08-21 | Siemens AG, 1000 Berlin und 8000 München | Abdeck- und Reinigungsvorrichtng für Tintenschreibköpfe |
JPH01195048A (ja) * | 1988-01-29 | 1989-08-04 | Canon Inc | インクジェット記録装置 |
JPH0245156A (ja) * | 1988-08-05 | 1990-02-15 | Alps Electric Co Ltd | 記録装置 |
EP0410691A1 (de) * | 1989-07-25 | 1991-01-30 | Seiko Instruments Inc. | Abdeckeinrichtung eines Tintenstrahldruckkopfes |
EP0416849A2 (de) * | 1989-09-04 | 1991-03-13 | Neopost Limited | Frankiermaschine |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 013, no. 489 (M - 888) 7 November 1989 (1989-11-07) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0931657A1 (de) * | 1998-01-15 | 1999-07-28 | Hewlett-Packard Company | Anordnung zum Anbringen eines Tintenlösungsmittels für Tintenstrahldruckköpfe |
US6145953A (en) * | 1998-01-15 | 2000-11-14 | Hewlett-Packard Company | Ink solvent application system for inkjet printheads |
US6375302B1 (en) | 1998-01-15 | 2002-04-23 | Hewlett-Packard Company | Ink solvent application system for inkjet printheads |
Also Published As
Publication number | Publication date |
---|---|
DE69700411D1 (de) | 1999-09-23 |
DE69700411T2 (de) | 2000-01-20 |
EP0786349B1 (de) | 1999-08-18 |
US5880755A (en) | 1999-03-09 |
FR2744060A1 (fr) | 1997-08-01 |
FR2744060B1 (fr) | 1998-04-30 |
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