EP0448683B1 - Tete d'impression a jet d'encre - Google Patents

Tete d'impression a jet d'encre Download PDF

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Publication number
EP0448683B1
EP0448683B1 EP90915488A EP90915488A EP0448683B1 EP 0448683 B1 EP0448683 B1 EP 0448683B1 EP 90915488 A EP90915488 A EP 90915488A EP 90915488 A EP90915488 A EP 90915488A EP 0448683 B1 EP0448683 B1 EP 0448683B1
Authority
EP
European Patent Office
Prior art keywords
ink
printhead
accordance
support
cover
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
EP90915488A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0448683A1 (fr
Inventor
Luc Regnault
Eric Bonnet
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.)
Markem Imaje SAS
Original Assignee
Imaje 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 Imaje SA filed Critical Imaje SA
Publication of EP0448683A1 publication Critical patent/EP0448683A1/fr
Application granted granted Critical
Publication of EP0448683B1 publication Critical patent/EP0448683B1/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
    • B41J2/005—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
    • 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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/02—Ink jet characterised by the jet generation process generating a continuous ink jet

Definitions

  • the invention relates to an ink jet print head intended in particular for printing large characters. It also relates to any process using such a head.
  • the object of the present invention is to satisfy these requirements by ensuring the required precision on these parameters, and this, by implementing the inkjet technique while remaining within the limits of minimum dimensions.
  • the Applicant has had the initiative of making them cooperate with each other, in the same housing, at least two nozzles so that the frames, produced from the jet emitted by each of these nozzles, are connected to each other, increasing all the more the dimensions of the frames. It is not a question of joining two printing heads of the standard type altogether, because such a solution would lead to an order complexity and a size such that this solution would be difficult to use.
  • the invention relates more precisely to a continuous liquid jet printing head, projecting charged and deflected ink drops, intended to form a continuous screen on a support, comprising, in a single housing, at least two modulation bodies having ejection nozzles supplied by a common ink circuit, a module for recovering unused drops which is common to all the jets and has a single recovery outlet, means for controlling the jets of drops emitted by each of the nozzles so that each screen printed on the support by the adjacent nozzles is continuous, characterized in that said housing comprises a base which is closed on one side by a removable bottom delimiting a compartment housing the ink supply lines of said common ink circuit and a single recovery line connected to said recovery module and control circuits electrical of said control means, and in that said base supports on the other side integrally supports of said regulating means which each comprise a nozzle-carrying barrel whose rotation is ensured by a flange and a nut, and in that it has holes oblong cooperating with eccentrics integral with said
  • the thickness of the code dictates the diameter of the nozzles for an ink / printed media pair.
  • the height of the code to be printed imposes, with the printing speed, the number of nozzles to be integrated into the print head, as well as the number of drops printed in a frame for each nozzle. In the nonlimiting example described below, the number of nozzles is two.
  • the relative positioning of the bars requires, for its part, cooperation of the different nozzles, both in terms of mechanical adjustments and in terms of the control electronics.
  • this printhead is consisting of a single housing (1) equipped with a removable bottom (2) which is applied against the base (100) of the housing (1) delimiting a compartment in which is housed the supply pipes and the '' single ink recovery line, as well as all the electrical control circuits (not shown). Sealing is ensured by means of a seal (3).
  • On the front of the housing (1) there are shown, ready to be made integral with the base (100), the two modulation bodies (A) and (B) which are more clearly visible in FIG. 2.
  • these modulation bodies (A) and (B) are therefore carried by a barrel support (6a), (6b), and adjustments are provided at these modulation bodies to ensure, for both modules (A) and (B), the correct alignment of the jet.
  • the unused drops are recovered at a recovery module (30) which, according to the invention, has the characteristic of being common for the two nozzles, and of operating in such a way that it receives the uncharged drops and returns the recovered ink by a single line to the general ink circuit.
  • This recovery module (30) is more clearly exposed in FIG. 3 and in FIG. 4 which is a plan view.
  • Each of the jets is collected in two receiving pipes (31) and (32) which bring the ink into the module (30) through the orifices (O1) and (O2).
  • These receiving pipes are in communication with a general recovery pipe (33), equipped with a plug (34) which authorizes or prohibits the circulation of the ink towards the general and single pipe (35) for returning the ink, responsible for bringing the ink through the outlet nozzle (350) to the ink circuit.
  • Holes (36), (37) are provided, tangent to the circulation of the ink, on the path from the pipes to the pipe (33), to serve as housing for electrodes (360) and (370) cooperating with the connector (350) placed in the general pipe (35) for the return of the ink to the general supply circuit, to measure the electrical impedance of the mixture of ink and air which is located between the connector (350 ) and the electrodes (360), (370), and detect any anomaly that may occur. If the resistance is too high, this means that the ink does not circulate and therefore that the nozzle concerned is blocked or that the jet is poorly recovered.
  • a metal connector (371) and a metal electrostatic discharge plate (400) of the module (30) are provided.
  • Locking means (39), (40) are also provided for holding the pipes (31), (32) in position, as well as fixing means (41) for fixing this plate to the module (30), the connector (371) being made integral with the screw (41).
  • the different rooms of the head being made of plastic, electrostatic charges may appear.
  • the plate (400) is placed opposite the parts to be marked to form an electrostatic screen which prevents electrostatic charges from accumulating at the right of the passage of the drops, which could influence their trajectory.
  • holes (150), (151) made necessary for reasons of realization of the channels (153), (154), holes which are permanently filled.
  • the box (1) (FIG. 1) comprises a bearing face (50) equipped with a seal (51) intended to receive a support (52) illustrated in FIG.
  • the latter has a first face (53) whose profile matches that of the bearing face (50) of the housing (1).
  • the two parts are joined together by any known means, and the seal is ensured by the seal (51).
  • the support (52) has a second bearing face (54) parallel to the first and whose profile is substantially circular. It is he who will receive the cover (70) called “ADP cover” because it protects the amplification circuit from phase detection, cover visible in FIG. 6.
  • the support (52) comprises an element (55) intended to according to the invention, carry an ink distributor (56) communicating with the general ink circuit by two inlet and outlet nozzles (57) located upstream. At the outlet of the distributor (56), there are (downstream) two supply lines (60, 61) and two purge lines (62, 63).
  • This distributor (56) receives from the general ink circuit which, according to a characteristic of the invention, is the same for all the nozzles, the ink supply by the nozzle (58) and returns to this circuit by the tip (57), the bleeding ink.
  • a single pipe connected to the end piece (350) ensures the recycling of the ink recovered at the level of the recovery module (30). This invisible pipe can be integrated into the navel (72) when it is a so-called "navel" variant.
  • This support (52) also includes profiles such as (69) on which the electronic control card (ADP) is fixed.
  • a seal (65) seals between the second bearing face (54) of the support (52) and the ADP cover (70) illustrated in FIG. 6.
  • a print head according to the invention is therefore equipped with an ADP cover (70).
  • Its base (71) follows the profile of the face (54) of the support (52) and is made integral with the latter by fixing means (P1) and (P2).
  • P1 and P2 fixing means
  • the variant with umbilicus (72) is shown, but if we disregard the latter, we obtain the representation of the first variant.
  • the ADP cover (70) is made integral with the support (52) by any known means, without forgetting the seal (65).
  • Its second face (73) is itself directly made integral with the ink circuit (not shown).
  • the latter comprises at one of its ends a first end piece (76) equipped with a flange (77) comprising a plurality of fixing holes (78).
  • This flange (77) comes to bear inside the cover (70) and is fixed by these fixing holes to the internal face (73 ') of the cover (70).
  • the other end of the navel (72) has a second end piece (79) fitted with a nut (80) and a threaded rod (81).
  • a second cover (82) called “navel cover” receives this end piece (79) whose threaded rod (81) passes through the hole (83), the whole being blocked by a nut (84).
  • Seals (85), (86) provide sealing.
  • the upper face (87) of the navel cap (82) is made integral with the ink circuit (not shown).
  • the print head comprises a plurality of nozzles, each of them comprising means for adjusting the jet, independent for each of the nozzles, and a single ink recovery module with a single return line for the ink to the general circuit.
  • the printing head in accordance with the invention, makes it possible to cooperate with each other at least two modulation bodies (A) and (B) so that the frames, produced from the jet emitted by each of the nozzles, are connected to each other, thereby increasing the weft dimensions.
  • the bar codes are printed by juxtaposition and connection of the frames emitted by the adjacent nozzles.
  • the order of sequencing of the drops and the charge voltage of these in the frame are in increasing order, so that, despite the speed of the relative scrolling of the head d printing relative to the support, the frame retains a rectilinear appearance.
  • the sequencing of the screens printed by the two adjacent nozzles is carried out in cascade so that the printed screens are in the extension of one another, and thus produce a very high bar, some or the scrolling speed of the support.
  • This characteristic is illustrated by means of the diagram represented in FIG. 7. These are the two diagrams of the function (Vc), charge voltage of the drops as a function of time for each of the two adjacent nozzles referenced here (n) and ( n + 1).
  • Vc function
  • n charge voltage of the drops as a function of time for each of the two adjacent nozzles referenced here (n) and ( n + 1).
  • the signal (S1) at the time (t1) of starting the printing sequence is sent to the sequencing logic circuit (C n ) for printing, corresponding to the jet emitted by the nozzle (n).
  • the signal (S2) at time (t2) triggers the logic circuit (C n +1) of printing sequencing controlling the jet of the nozzle (n + 1) until the end of printing of the corresponding frame (t3).
  • the print head must be oriented around an axis (OZ) perpendicular to the plane of the support to be printed (x, o, y) so as to compensate for any inclination ( ⁇ ) of the frame on the axis (y), which results from the combination of a relative speed (V) of movement of the support and of the sending of a series of successive drops to print the frame during the duration ( ⁇ ) .
  • OZ an axis perpendicular to the plane of the support to be printed
  • V relative speed
  • the invention finds its application in ink jet marking techniques, in particular for printing large characters (logo, graphic) and bar codes.

Landscapes

  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Ink Jet (AREA)
EP90915488A 1989-10-16 1990-10-12 Tete d'impression a jet d'encre Expired - Lifetime EP0448683B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR8913719A FR2653063B1 (fr) 1989-10-16 1989-10-16 Tete d'impression a jet d'encre et procede de mise en óoeuvre de cette tete destinee notamment a l'impression de caracteres de grandes dimensions.
FR8913719 1989-10-16
PCT/FR1990/000730 WO1991005663A1 (fr) 1989-10-16 1990-10-12 Tete d'impression a jet d'encre

Publications (2)

Publication Number Publication Date
EP0448683A1 EP0448683A1 (fr) 1991-10-02
EP0448683B1 true EP0448683B1 (fr) 1995-01-11

Family

ID=9386582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90915488A Expired - Lifetime EP0448683B1 (fr) 1989-10-16 1990-10-12 Tete d'impression a jet d'encre

Country Status (13)

Country Link
US (1) US5457484A (es)
EP (1) EP0448683B1 (es)
JP (1) JP3366003B2 (es)
KR (1) KR0183017B1 (es)
CN (1) CN1021644C (es)
AT (1) ATE116907T1 (es)
AU (1) AU640423B2 (es)
CA (1) CA2027615C (es)
DE (1) DE69016004T2 (es)
ES (1) ES2066231T3 (es)
FR (1) FR2653063B1 (es)
RU (1) RU2076047C1 (es)
WO (1) WO1991005663A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102119082A (zh) * 2008-08-11 2011-07-06 马肯依玛士公司 具有射流速度补偿的喷墨打印设备

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2681010B1 (fr) * 1991-09-10 1995-02-17 Imaje Module d'impression multijet et appareil d'impression comportant plusieurs modules.
SG73372A1 (en) * 1993-09-08 2000-06-20 Hitachi Ltd An ink jet printing apparatus and a printing head for such an ink jet printing apparatus
FR2729891B1 (fr) * 1995-01-31 1997-04-11 Imaje Sa Dispositif de modulation equipe d'un filtre de securite pour tete d'impression a jet d'encre
FR2746038B1 (fr) * 1996-03-14 1998-05-07 Dispositif permettant l'emission d'un jet simple de matiere sous pression par une buse obturable
JPH11138951A (ja) * 1997-11-14 1999-05-25 Canon Inc 充電機能を有する記録装置及びその充電方法
JP3326395B2 (ja) * 1998-09-08 2002-09-24 松下電器産業株式会社 インクジェット記録装置
FR2807703B1 (fr) 2000-04-12 2002-06-21 Imaje Sa Generateur de gouttes d'encre et imprimante equipee
FR2835217B1 (fr) * 2002-01-28 2004-06-25 Imaje Sa Tete d'impression a double buse d'axes convergents et imprimante equipee
FR2879961B1 (fr) * 2004-12-23 2016-08-19 Imaje Sa Nettoyage d'une tete d'impression
CN101092079A (zh) * 2006-06-19 2007-12-26 张秀传 喷码机用液滴发生器
MX2009011530A (es) 2007-04-27 2009-12-04 Wilson Tool Int Ensambles novedosos y metodos para procesar piezas de trabajo en prensas impulsadas con piston.
US8764169B2 (en) 2009-08-11 2014-07-01 Hitachi Industrial Equipment Systems Co., Ltd. Inkjet recording device and printing head
CN102602211B (zh) * 2012-03-20 2013-10-16 丹东金丸集团有限公司 纳米材料直接制版机墨头组件及其调节方法
CN106457825B (zh) * 2014-03-31 2018-12-14 录象射流技术公司 二元阵列喷墨打印头
USD756452S1 (en) 2014-08-01 2016-05-17 Wilson Tool International Inc. Cartridge
USD744554S1 (en) 2014-08-01 2015-12-01 Wilson Tool International Inc. Tool
USD755863S1 (en) 2014-08-01 2016-05-10 Wilson Tool International Inc. Tool
US9507332B2 (en) 2014-08-01 2016-11-29 Wilson Tool International Inc. Multi-use active tool assembly
USD751500S1 (en) 2014-08-01 2016-03-15 Wilson Tool International Inc. Battery cartridge
CN105730014B (zh) * 2016-02-04 2018-04-17 北京赛腾标识系统股份公司 喷墨打印头装置
CN105946374B (zh) * 2016-06-27 2018-09-07 北京赛腾标识系统股份公司 一种便携式移动喷印辅助装置
EP3774356B1 (en) * 2019-01-04 2024-04-24 Videojet Technologies Inc. Print head connector assembly
KR102442654B1 (ko) * 2022-02-22 2022-09-13 (주)인터맥 방수성능을 갖는 마킹기용 프린트헤드조립체

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US3956756A (en) * 1970-08-26 1976-05-11 Imperial Chemical Industries, Inc. Pattern printing apparatus
JPS5191630A (es) * 1975-02-03 1976-08-11
US4219822A (en) * 1978-08-17 1980-08-26 The Mead Corporation Skewed ink jet printer with overlapping print lines
US4268836A (en) * 1979-10-25 1981-05-19 The Mead Corporation Ink jet printer having improved catcher
JPS5714053A (en) * 1980-06-30 1982-01-25 Sharp Corp Detecting apparatus for abnormally directed jet in ink jet printer
US4307407A (en) * 1980-06-30 1981-12-22 The Mead Corporation Ink jet printer with inclined rows of jet drop streams
FR2542257B1 (fr) * 1983-03-07 1985-08-02 Imaje Sa Tete d'impression a jet d'encre et imprimante qui en est equipee
DE3578405D1 (de) * 1984-11-12 1990-08-02 Commw Scient Ind Res Org Ausrichtverfahren von troepfchen fuer duesendruckvorrichtungen.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102119082A (zh) * 2008-08-11 2011-07-06 马肯依玛士公司 具有射流速度补偿的喷墨打印设备

Also Published As

Publication number Publication date
RU2076047C1 (ru) 1997-03-27
KR920700921A (ko) 1992-08-10
CA2027615C (fr) 2001-08-28
AU6601990A (en) 1991-05-16
DE69016004T2 (de) 1995-05-18
CA2027615A1 (fr) 1991-04-17
JPH04502290A (ja) 1992-04-23
WO1991005663A1 (fr) 1991-05-02
EP0448683A1 (fr) 1991-10-02
CN1051885A (zh) 1991-06-05
ES2066231T3 (es) 1995-03-01
US5457484A (en) 1995-10-10
ATE116907T1 (de) 1995-01-15
FR2653063A1 (fr) 1991-04-19
FR2653063B1 (fr) 1995-10-27
CN1021644C (zh) 1993-07-21
AU640423B2 (en) 1993-08-26
KR0183017B1 (ko) 1999-05-15
JP3366003B2 (ja) 2003-01-14
DE69016004D1 (de) 1995-02-23

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