EP0719645A2 - Tintenstrahldrucker - Google Patents

Tintenstrahldrucker Download PDF

Info

Publication number
EP0719645A2
EP0719645A2 EP95118339A EP95118339A EP0719645A2 EP 0719645 A2 EP0719645 A2 EP 0719645A2 EP 95118339 A EP95118339 A EP 95118339A EP 95118339 A EP95118339 A EP 95118339A EP 0719645 A2 EP0719645 A2 EP 0719645A2
Authority
EP
European Patent Office
Prior art keywords
print head
main
cap
carriage
printer
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
EP95118339A
Other languages
English (en)
French (fr)
Other versions
EP0719645A3 (de
EP0719645B1 (de
Inventor
Gilbert Gavillet
Marcellino Requena
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.)
Olivetti Tecnost SpA
Original Assignee
OCD 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 OCD SA filed Critical OCD SA
Publication of EP0719645A2 publication Critical patent/EP0719645A2/de
Publication of EP0719645A3 publication Critical patent/EP0719645A3/de
Application granted granted Critical
Publication of EP0719645B1 publication Critical patent/EP0719645B1/de
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
    • B41J2/005—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
    • B41J2/16505—Caps, spittoons or covers for cleaning or preventing drying out
    • B41J2/16508—Caps, spittoons or covers for cleaning or preventing drying out connected with the printer frame
    • B41J2/16511—Constructions for cap positioning
    • 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
    • B41J2002/16576—Cleaning means pushed or actuated by print head movement

Definitions

  • the present invention relates to an inkjet printer provided with a movable carriage arranged so as to be able to receive a print head interchangeable with at least one print head of a second type, the printer comprising a station for maintenance with at least two types of caps intended to be applied to the print head of the type for which they are intended.
  • inkjet printers it is conventional to protect the ink ejection nozzles of the print head, when it is in the rest position for a long time between printing periods, this in order to avoid drying of the ink leading to blockage of the nozzles.
  • a cap is applied against the nozzle plate which maintains a certain level of humidity.
  • the device which is the subject of the present invention applies to a printer provided with an interchangeable print head which can be plugged into the mobile printing carriage.
  • Different types of heads can be inserted in the carriage, for example a black ink head or a multi-color ink head.
  • US Patent 5,155,497 describes a maintenance station for a printer of this type.
  • This station comprises a support rotating 180 ° around an axis parallel to the direction of movement of the carriage and on which two caps are mounted in opposite positions by means of two slides movable longitudinally along this direction of movement of the carriage mobile.
  • the rotating support rotates the slide and the cap corresponding to the head, the carriage then drives the slide longitudinally to apply the cap against the nozzle plate.
  • This maintenance station is made up of a large number of parts and is of complicated construction. In addition, it cannot be integrated into existing printers.
  • the object of the present invention is to remedy these drawbacks and the invention is characterized for this purpose by the fact that the maintenance station comprises at least one main cap mounted on a main movable support and intended to cooperate with said head. interchangeable printing and at least one additional cap mounted on at least one secondary movable support and arranged so as to be interposed between the main cap and the second type printing head.
  • the second type printhead has at least one element of a shape different from the interchangeable printhead, this element being arranged so as to control the displacement of the secondary movable support to interpose the or one of the additional caps between the main cap and the second type print head when the carriage provided with the second type print head is moved to the maintenance station.
  • the shape of the print head thus determines the selection of the cap which will be applied against the nozzles, which allows simple and safe operation, while having a construction of a low cost price.
  • the secondary mobile support (s) are slidably mounted on the printer in a direction parallel to the direction of movement of the mobile carriage, the printer comprising a lever mechanism actuated by said element of different shape and arranged so as to move the or the secondary movable supports against the action of an elastic member to interpose at least one additional cap between the main cap and the second type printing head, when the carriage is moved towards the maintenance station.
  • applying the or one of the additional caps against the print head of second type plugged into the carriage is effected by pushing the main cap towards this print head.
  • FIGS. 1a) to 1d) schematically illustrate the principle underlying the invention.
  • Figure 2 is a side view of the embodiment shown during printing.
  • Figure 3 is a front view of Figure 2, some elements not being shown.
  • Figure 4 is a side view of the embodiment shown with the print head in the rest position in the maintenance station.
  • Figure 5 is a front view of Figure 4, some elements not being shown.
  • a maintenance station 3 of a printer comprises a main movable support 4 on which is slidably mounted a main cap 5 secured to a cap holder 6.
  • An interchangeable print head 8 inserted on a carriage is moved to a position in the maintenance station where it is arranged opposite the main cap 5. The latter is then applied against the nozzles of the part front of the print head 8 to prevent drying of the ink, as shown in Figure 1b).
  • the printer is arranged to receive at least one printhead 10 of another type having a different shape or element 11 (Figure 1c)).
  • This element 11 serves as a selection member for controlling the placement of an additional cap 12 which is interposed between the main cap 5 and the front part of the print head 10, when the latter is mounted on the carriage. Then the application of the additional cap 12 against the print head 10 is carried out by pushing the main cap 5 towards the print head 10.
  • the cap additional 12 remains stationary in a laterally offset position as shown in Figures 1a and 1b.
  • the main cap 5 with its cap holder 6 are resiliently mounted on the support 4, on which they slide with a predetermined stroke delimited by stops not shown, thanks to a spring 14 which is more or less compressed depending on whether the additional cap 12 is interspersed or not.
  • the maintenance station 3 is arranged laterally outside the printing area so as to cooperate with the carriage 20 and the print head 8 or 10 inserted on this carriage.
  • This maintenance station 3 comprises a chassis 24 on which the main movable support 4 is slidably mounted vertically, pulled by a spring 25 against a stop 26 (FIG. 2).
  • the main movable support 4 carries the cap holder 6 and the main cap 5 which can be lowered, as illustrated in FIG. 3 in phantom to be applied directly against the interchangeable printhead 8.
  • the printer comprises this effect an actuating mechanism 30 comprising a lever 31 articulated along a pivot 32 on the chassis 24.
  • This lever 31 has a branch 33 intended to cooperate with a part 34 of the carriage 20 and a branch 36 arranged so as to cooperate with the main mobile support 4.
  • the actuation mechanism 30 also has a pinion 38 driven in rotation by a motor (not illustrated) of the printer and which is capable of cooperating with a tooth 39 secured to the main mobile support 4 (FIG. 2).
  • the printer motor rotates the pinion 38 to resiliently apply the main cap 5 against the face of the nozzles of the print head 8.
  • the print head 10 of the second type can be plugged into the carriage 20 in place of the head 8.
  • the element of different shape 11 is constituted by a finger 11 intended to cooperate with a lever mechanism 42 for interposing the additional cap 12 between the main cap 5 and the print head 10.
  • This additional cap 12 is fixed on a secondary mobile support 44 pivotally and slidingly mounted on a shaft 45 fixed on the frame 24.
  • a spring 43 placed on this shaft biases the secondary mobile support 44 towards a rest position illustrated in FIGS. 2 and 3, in which the secondary cap 12 is pivoted at an angle of about 20 ° upward relative to the horizontal and to the left end of the shaft 45.
  • the lever mechanism 42 comprises a first lever 46 pivotally mounted at 47 on the chassis 24. It has a first branch 48 capable of cooperating with the finger 11 as a form element and a second branch 49 comprising a cleat 50 cooperating with a second lever 52 of the mechanism.
  • This lever 52 is pivotally mounted at 53 on the chassis 24 and comes into contact with the cleat by a branch 54 and with the secondary movable support 44 by a branch 55.
  • the print head 10 of the second type thus acts on the lever couple 46, 52 which transmit the translational movement of the head to the secondary movable support 44 to place the additional cap 12 opposite this print head 10.
  • the the distance separating the main cap 5 from the surface of the nozzles 15 of the print head 10 is sufficient to allow the free insertion of the secondary mobile support 44 and secondary cap 12 assembly.
  • the downward sliding of the main movable support 4 is performed as described above.
  • the main mobile support 4 then presses the secondary mobile support 44 against the print head 10, the secondary cap 12 pressing against the surface of the nozzles 15.
  • the motor of the printer rotates the pinion 38 clockwise in Figure 4 to bring the tooth 39 upward.
  • the carriage 20 can then leave the maintenance station and the main and secondary movable supports are moved by the action of the springs 25 and 43 to the rest position illustrated in FIGS. 2 and 3.
  • the embodiment described above has no limiting nature and that it can receive any desirable modifications within the framework as defined by claim 1.
  • the mechanisms controlling the intercalation of the secondary cap and the lowering of the mobile supports could be carried out in a different way, for example without the intervention of levers by direct action of a part of the print head and of the carriage on the support secondary and main mobile.
  • the secondary movable support would have two or more caps, the respective positioning of which opposite the plug-in print head would be ensured by different lengths of fingers of the respective print heads; the sliding travel of the secondary movable support would for example be controlled accordingly by the fingers provided on the print heads.
  • One or more caps could be connected by flexible tube to a suction pump allowing priming of the print head or provided with an ink absorbing pad.
  • the maintenance station can also be equipped with one or more flaps intended to wipe the front part of the print heads. These flaps could be retractably mounted or not on the main mobile support or on the chassis.

Landscapes

  • Ink Jet (AREA)
EP95118339A 1994-12-30 1995-11-22 Tintenstrahldrucker Expired - Lifetime EP0719645B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH03970/94A CH690099A5 (fr) 1994-12-30 1994-12-30 Imprimante à jet d'encre.
CH3970/94 1994-12-30
CH397094 1994-12-30

Publications (3)

Publication Number Publication Date
EP0719645A2 true EP0719645A2 (de) 1996-07-03
EP0719645A3 EP0719645A3 (de) 1997-03-19
EP0719645B1 EP0719645B1 (de) 2001-10-10

Family

ID=4267364

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95118339A Expired - Lifetime EP0719645B1 (de) 1994-12-30 1995-11-22 Tintenstrahldrucker

Country Status (4)

Country Link
US (1) US5790148A (de)
EP (1) EP0719645B1 (de)
CH (1) CH690099A5 (de)
DE (1) DE69523130T2 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0955168A1 (de) * 1998-04-10 1999-11-10 Hewlett-Packard Company Reinigungsstation für Tintenstrahldruckkopf
EP1674267A3 (de) * 2004-12-21 2007-05-09 Seiko Instruments Inc. Wartungseinheit und Tintenstrahldrucker
US11214068B2 (en) * 2018-04-30 2022-01-04 Hewlett-Packard Development Company, L.P. Printhead servicing

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6390592B2 (en) * 1998-08-28 2002-05-21 Canon Kabushiki Kaisha Ink jet recording apparatus
JP2014031022A (ja) * 2013-11-20 2014-02-20 Seiko Epson Corp 流体噴射装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5155497A (en) 1991-07-30 1992-10-13 Hewlett-Packard Company Service station for ink-jet printer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0423475B1 (de) * 1989-08-31 1997-01-22 Canon Kabushiki Kaisha Absaug-Regeneriervorrichtung für ein Tintenstrahlaufzeichnungsgerät
IT1261111B (it) * 1993-11-11 1996-05-09 Olivetti Canon Ind Spa Stazione di pulizia per una stampante a getto di inchiostro
JP3259748B2 (ja) * 1994-03-31 2002-02-25 セイコーエプソン株式会社 インクジェット式記録装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5155497A (en) 1991-07-30 1992-10-13 Hewlett-Packard Company Service station for ink-jet printer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0955168A1 (de) * 1998-04-10 1999-11-10 Hewlett-Packard Company Reinigungsstation für Tintenstrahldruckkopf
EP1674267A3 (de) * 2004-12-21 2007-05-09 Seiko Instruments Inc. Wartungseinheit und Tintenstrahldrucker
US7517047B2 (en) 2004-12-21 2009-04-14 Seiko I Infotech Inc. Maintenance unit and ink jet printer
US11214068B2 (en) * 2018-04-30 2022-01-04 Hewlett-Packard Development Company, L.P. Printhead servicing

Also Published As

Publication number Publication date
EP0719645A3 (de) 1997-03-19
US5790148A (en) 1998-08-04
CH690099A5 (fr) 2000-04-28
DE69523130T2 (de) 2002-06-20
DE69523130D1 (de) 2001-11-15
EP0719645B1 (de) 2001-10-10

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