EP1995070A2 - Ink supply system for printers - Google Patents
Ink supply system for printers Download PDFInfo
- Publication number
- EP1995070A2 EP1995070A2 EP08103111A EP08103111A EP1995070A2 EP 1995070 A2 EP1995070 A2 EP 1995070A2 EP 08103111 A EP08103111 A EP 08103111A EP 08103111 A EP08103111 A EP 08103111A EP 1995070 A2 EP1995070 A2 EP 1995070A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- heads
- ink
- projection
- supply system
- ink supply
- 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.)
- Withdrawn
Links
- 238000007639 printing Methods 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 238000010422 painting Methods 0.000 claims 1
- 239000000976 ink Substances 0.000 description 32
- 238000000034 method Methods 0.000 description 5
- 230000000295 complement effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
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
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts 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
- B41J2/135—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
- B41J2/16532—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 by applying vacuum only
-
- 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
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17503—Ink cartridges
- B41J2/17556—Means for regulating the pressure in the cartridge
-
- 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
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17596—Ink pumps, ink valves
-
- 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
- B41J2/18—Ink recirculation systems
Definitions
- the present invention relates to methods of printing on rigid or semi-rigid surfaces, by ink projection, proposing an ink supply system to the projection heads, with a provision that avoids ink dripping in said heads.
- the ink jet printing has the disadvantage that under normal conditions in the spray heads there is a dripping of the ink supplied for the application, which gives rise to the tasks and defects of the ink. printing on the application surfaces.
- the invention relates to an ink supply system for the projection printing heads, which satisfactorily and simply solves the problem of ink dripping.
- the system according to the invention is composed of the supply of the ink to the printing projection heads, through a sealed reservoir, in which a depression is created such that the ink passes through the heads at a pressure less than the external pressure, which prevents the fluid inks drip at the output of said heads.
- the mentioned watertight tank is located at a lower height level than the projection heads, which may be sufficient independently to obtain the necessary depression to avoid dripping of the ink in the heads, the application of an absorption pump vacuum system is also provided, in relation to said sealed tank, which can be used in turn independently, or in a complementary manner to the height situation of the sealed tank.
- the provision of a pressurized air supply coupling is also provided, making it possible to perform a cleaning action of the heads by impurity impetus which causes the drying of the ink in the outlets. projection.
- said system of the invention has some very advantageous characteristics, having a preferable character for the supply of inks to the printing projection heads, facing the current systems of this function.
- the object of the invention is an ink supply system for the projection printing heads, comprising a reservoir (1) of large capacity, from which the ink is propelled by a pump (2) to to a sealed reservoir (3) through a filter (4) which removes impurities to prevent them from reaching the application heads (5).
- the purpose of the sealed reservoir (3) is to create a depression with respect to the ink projection heads (5) so that the pressure of the ink in said heads (5) is less than the external pressure, to avoid undesirable ink dripping occurs therein.
- the sealed reservoir (3) is at a lower height level than the heads (5), so that the difference (e) in height gives rise to a depression with the absorption effect. liquid paint to the rear, in the heads (5), avoiding a dripping does occur through the outputs thereof.
- the connection of an absorption vacuum system by a suction pump (6) is also provided, whereby a vacuum is also obtained with the absorption effect of the liquid paint. towards the rear, to avoid dripping through the outlets of the projection heads (5).
- the depression required to prevent dripping of the ink in the outlets of the heads (5) can be obtained individually by any of the two indicated methods, that is to say by the installation of the sealed reservoir ( 3) at a height level lower than the application heads (5), or by connecting a vacuum system by a suction pump (6), with respect to the mentioned watertight tank (3), both processes that can also be implemented jointly, in a manner complementary to each other.
- connection (7) for supplying air under pressure is also provided, by means of which it is possible to carry out a cleaning pulse of the heads (5), to expel any impurities caused by drying the ink in the projection outlets.
- the power system may be common for all of the same color ink projection heads (5) in one application, having to arrange at least one complete system for each different ink color in each application.
Landscapes
- Ink Jet (AREA)
- Coating Apparatus (AREA)
Abstract
Description
La présente invention concerne les procédés d'impression sur des surfaces rigides ou semi-rigides, par projection d'encre, proposant un système d'alimentation d'encre aux têtes de projection, avec une disposition qui évite le gouttage de l'encre dans lesdites têtes.The present invention relates to methods of printing on rigid or semi-rigid surfaces, by ink projection, proposing an ink supply system to the projection heads, with a provision that avoids ink dripping in said heads.
Pour l'impression sur des surfaces rigides ou semi-rigides, la technique de contact par des rouleaux d'impression est connue, ainsi que la technique sans contact par des têtes de projection, cette dernière offrant une plus grande perfection et une meilleure qualité pour l'application des encres.For printing on rigid or semi-rigid surfaces, the technique of contact by printing rolls is known, as well as the technique without contact by projection heads, the latter offering a greater perfection and a better quality for the application of inks.
Cependant, l'impression par projection d'encre présente l'inconvénient que dans des conditions normales dans les têtes de projection se produit un gouttage de l'encre fourni pour l'application, ce qui donne lieu à des tâches et des défauts de l'impression sur les surfaces d'application.However, the ink jet printing has the disadvantage that under normal conditions in the spray heads there is a dripping of the ink supplied for the application, which gives rise to the tasks and defects of the ink. printing on the application surfaces.
Par conséquent, il est nécessaire de mettre en oeuvre les têtes de projection des encres avec des dispositions qui évitent le gouttage, ce qui n'est pas résolu de façon satisfaisante dans les systèmes actuels d'impression de ce type, étant donné que les solutions adoptées ne sont pas correctement efficaces, ou se basent sur des modes de réalisation trop compliqués et coûteux.Therefore, it is necessary to implement the ink projection heads with provisions that avoid dripping, which is not satisfactorily solved in current printing systems of this type, since the solutions adopted are not properly effective, or are based on overly complicated and costly
L'invention concerne un système d'alimentation d'encre aux têtes d'impression de projection, qui solutionne d'une façon satisfaisante et simple le problème du gouttage de l'encre.The invention relates to an ink supply system for the projection printing heads, which satisfactorily and simply solves the problem of ink dripping.
Le système selon l'invention est composé de la fourniture de l'encre aux têtes de projection d'impression, au travers d'un réservoir étanche, dans lequel une dépression est créée telle que l'encre traverse les têtes à une pression inférieure à la pression extérieure, ce qui permet d'éviter que les encres fluides gouttent à la sortie desdites têtes.The system according to the invention is composed of the supply of the ink to the printing projection heads, through a sealed reservoir, in which a depression is created such that the ink passes through the heads at a pressure less than the external pressure, which prevents the fluid inks drip at the output of said heads.
Pour cela, le réservoir étanche mentionné est situé à un niveau en hauteur plus bas que les têtes de projection, ce qui peut être suffisant indépendamment pour obtenir la dépression nécessaire pour éviter le gouttage de l'encre dans les têtes, l'application d'un système de vide par pompe d'absorption étant également prévue, en rapport avec ledit réservoir étanche, qui peut être utilisé à son tour indépendamment, ou de façon complémentaire à la situation en hauteur du réservoir étanche.For this, the mentioned watertight tank is located at a lower height level than the projection heads, which may be sufficient independently to obtain the necessary depression to avoid dripping of the ink in the heads, the application of an absorption pump vacuum system is also provided, in relation to said sealed tank, which can be used in turn independently, or in a complementary manner to the height situation of the sealed tank.
En ce qui concerne le réservoir étanche, la disposition d'un accouplement de fourniture d'air sous pression est également prévue, permettant de réaliser une action de nettoyage des têtes, par impulsion des impuretés qui occasionne le séchage de l'encre dans les sorties de projection.Regarding the sealed tank, the provision of a pressurized air supply coupling is also provided, making it possible to perform a cleaning action of the heads by impurity impetus which causes the drying of the ink in the outlets. projection.
Entre les têtes de projection d'impression et le réservoir étanche, il est également possible d'établir une recirculation, grâce à laquelle on obtient un mouvement continu de l'encre fournie aux têtes, évitant ainsi la décantation des particules solides composant les encres et par conséquent la possibilité d'obstruction des têtes.Between the printing projection heads and the sealed tank, it is also possible to establish a recirculation, through which we obtain a continuous movement of the ink supplied to the heads, thus avoiding the settling of the solid particles composing the inks and therefore the possibility of obstruction of the heads.
Grâce à ce qui précède, ledit système de l'invention présente quelques caractéristiques très avantageuses, revêtant un caractère préférable pour l'alimentation des encres aux têtes de projection d'impression, face aux systèmes actuels de cette fonction.Thanks to the foregoing, said system of the invention has some very advantageous characteristics, having a preferable character for the supply of inks to the printing projection heads, facing the current systems of this function.
-
La
figure 1 illustre un schéma du système préconisé, selon un mode de réalisation ;Thefigure 1 illustrates a scheme of the recommended system, according to one embodiment; -
la
figure 2 présente un schéma du même système préconisé, selon un autre mode de réalisation.thefigure 2 shows a diagram of the same system recommended, according to another embodiment.
L'objet de l'invention concerne un système d'alimentation d'encre des têtes d'impression par projection, comportant un réservoir (1) de grande capacité, à partir duquel l'encre est propulsée par une pompe (2) jusqu'à un réservoir étanche (3) au travers d'un filtre (4) qui élimine les impuretés pour éviter que celles-ci puissent parvenir aux têtes (5) d'application.The object of the invention is an ink supply system for the projection printing heads, comprising a reservoir (1) of large capacity, from which the ink is propelled by a pump (2) to to a sealed reservoir (3) through a filter (4) which removes impurities to prevent them from reaching the application heads (5).
Le réservoir étanche (3) a pour objet de créer une dépression par rapport aux têtes (5) de projection de l'encre, afin que la pression de l'encre dans lesdites têtes (5) soit inférieure à la pression extérieure, pour éviter qu'un gouttage indésirable de l'encre ne se produise dans celles-ci.The purpose of the sealed reservoir (3) is to create a depression with respect to the ink projection heads (5) so that the pressure of the ink in said heads (5) is less than the external pressure, to avoid undesirable ink dripping occurs therein.
Pour créer la dépression, le réservoir étanche (3) se situe à un niveau en hauteur plus bas que les têtes (5), de telle sorte que la différence (e) de hauteur donne lieu à une dépression avec l'effet d'absorption de la peinture liquide vers l'arrière, dans les têtes (5), évitant qu'un gouttage ne se produise par les sorties de celles-ci.To create the vacuum, the sealed reservoir (3) is at a lower height level than the heads (5), so that the difference (e) in height gives rise to a depression with the absorption effect. liquid paint to the rear, in the heads (5), avoiding a dripping does occur through the outputs thereof.
En ce qui concerne le réservoir étanche (3), le raccordement d'un système de vide par absorption par une pompe aspirante (6) est également prévu, grâce auquel on obtient également une dépression avec l'effet d'absorption de la peinture liquide vers l'arrière, pour éviter le gouttage par les sorties des têtes de projection (5).With regard to the sealed tank (3), the connection of an absorption vacuum system by a suction pump (6) is also provided, whereby a vacuum is also obtained with the absorption effect of the liquid paint. towards the rear, to avoid dripping through the outlets of the projection heads (5).
La dépression nécessaire pour éviter le gouttage de l'encre dans les sorties des têtes (5) peut être obtenue de façon individuelle par l'un quelconque des deux procédés indiqués, c'est-à-dire par l'installation du réservoir étanche (3) à un niveau en hauteur plus bas que les têtes (5) d'application, ou par raccordement d'un système de vide par une pompe d'aspiration (6), par rapport au réservoir étanche (3) mentionné, les deux procédés pouvant également être mis en oeuvre conjointement, d'une façon complémentaire entre eux.The depression required to prevent dripping of the ink in the outlets of the heads (5) can be obtained individually by any of the two indicated methods, that is to say by the installation of the sealed reservoir ( 3) at a height level lower than the application heads (5), or by connecting a vacuum system by a suction pump (6), with respect to the mentioned watertight tank (3), both processes that can also be implemented jointly, in a manner complementary to each other.
En ce qui concerne le réservoir étanche (3), un raccordement (7) de fourniture d'air sous pression est également prévu, grâce auquel il est possible de réaliser une impulsion de nettoyage des têtes (5), pour expulser les impuretés éventuelles occasionnées par le séchage de l'encre dans les sorties de projection.With regard to the sealed tank (3), a connection (7) for supplying air under pressure is also provided, by means of which it is possible to carry out a cleaning pulse of the heads (5), to expel any impurities caused by drying the ink in the projection outlets.
Pour l'utilisation du système avec des encres pourvues de pigments composants ayant tendance à se décanter, c'est-à-dire que lorsque l'encre passe un temps déterminé dans un état statique, ses particules solides composantes ont tendance à se déposer, il est prévu d'incorporer un agitateur (8) dans le réservoir principal (1), et ensuite, entre les têtes de projection (5) et le réservoir étanche (3) est établie une recirculation de l'encre, dotée d'une pompe (9) d'impulsion, ainsi que cela est illustré sur la
De cette façon, grâce à l'agitateur (8) on évite que les particules solides composantes des encres se décantent dans le réservoir d'alimentation (1), alors que par la recirculation impulsée par la pompe (9), on obtient un mouvement continu de l'encre fournie aux têtes (5) de projection, évitant que les particules solides composantes des encres se décantent dans lesdites têtes (5) de projection.In this way, thanks to the stirrer (8) it is avoided that the solid particles component of the inks are settling in the feed tank (1), while by the recirculation impulsed by the pump (9), we obtain a movement continuous ink supplied to the heads (5) projection, preventing the solid particles component of the inks decant in said heads (5) projection.
Le système d'alimentation peut être commun pour toutes les têtes (5) de projection d'encre d'une même couleur dans une application, devant agencer au moins un système complet pour chaque couleur d'encre différente dans chaque application.The power system may be common for all of the same color ink projection heads (5) in one application, having to arrange at least one complete system for each different ink color in each application.
Claims (5)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200701240A ES2307428B1 (en) | 2007-05-09 | 2007-05-09 | INK FEEDING SYSTEM FOR PRINTERS. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1995070A2 true EP1995070A2 (en) | 2008-11-26 |
| EP1995070A3 EP1995070A3 (en) | 2009-09-16 |
Family
ID=39830168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08103111A Withdrawn EP1995070A3 (en) | 2007-05-09 | 2008-03-28 | Ink supply system for printers |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1995070A3 (en) |
| ES (1) | ES2307428B1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4338610A (en) * | 1972-11-21 | 1982-07-06 | Burroughs Corporation | Modular-head endorser |
| US5818485A (en) * | 1996-11-22 | 1998-10-06 | Xerox Corporation | Thermal ink jet printing system with continuous ink circulation through a printhead |
| WO2000068018A1 (en) * | 1999-05-05 | 2000-11-16 | Inca Digital Printers Limited | Fluid-pressure controlled ink pressure regulator |
| EP1281526A1 (en) * | 1998-02-13 | 2003-02-05 | Seiko Epson Corporation | Ink jet droplet ejection capability recovery method |
| EP1452320A2 (en) * | 2003-02-28 | 2004-09-01 | Eastman Kodak Company | Method of cleaning nozzles in inkjet printhead |
| EP1593519A2 (en) * | 2004-05-07 | 2005-11-09 | Matsushita Electric Industrial Co., Ltd. | Ink supplier for ink jet recorder |
| US20060187278A1 (en) * | 2005-02-18 | 2006-08-24 | Langford Jeffrey D | Ink recirculation system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3761953A (en) * | 1972-10-24 | 1973-09-25 | Mead Corp | Ink supply system for a jet ink printer |
| US3929071A (en) * | 1974-12-23 | 1975-12-30 | Ibm | Ink recirculating system for ink jet printing apparatus |
| US4494124A (en) * | 1983-09-01 | 1985-01-15 | Eastman Kodak Company | Ink jet printer |
| FR2690648B1 (en) * | 1992-04-30 | 1994-07-08 | Imaje | METHOD FOR OPTIMIZING THE OPERATION OF AN INK JET PRINTER AND PRINTER USING SUCH A METHOD. |
| US6070961A (en) * | 1997-09-19 | 2000-06-06 | Xerox Corporation | Priming station for an ink jet printer |
| US6402293B1 (en) * | 2000-06-16 | 2002-06-11 | Xerox Corp. | Vacuum accumulator and ink manifold |
| RU2212633C1 (en) * | 2002-05-27 | 2003-09-20 | ЗАО "Институт электрокаплеструйных технологий" | Hydraulic system of electro-droplet-jet printer and its components |
| CN2931119Y (en) * | 2006-08-14 | 2007-08-08 | 浙江工正科技发展有限公司 | Negative pressure type ink supplying device |
| CN101011885A (en) * | 2007-02-16 | 2007-08-08 | 邵杰 | Vacuum ink feeder for printer cartridge |
-
2007
- 2007-05-09 ES ES200701240A patent/ES2307428B1/en not_active Withdrawn - After Issue
-
2008
- 2008-03-28 EP EP08103111A patent/EP1995070A3/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4338610A (en) * | 1972-11-21 | 1982-07-06 | Burroughs Corporation | Modular-head endorser |
| US5818485A (en) * | 1996-11-22 | 1998-10-06 | Xerox Corporation | Thermal ink jet printing system with continuous ink circulation through a printhead |
| EP1281526A1 (en) * | 1998-02-13 | 2003-02-05 | Seiko Epson Corporation | Ink jet droplet ejection capability recovery method |
| WO2000068018A1 (en) * | 1999-05-05 | 2000-11-16 | Inca Digital Printers Limited | Fluid-pressure controlled ink pressure regulator |
| EP1452320A2 (en) * | 2003-02-28 | 2004-09-01 | Eastman Kodak Company | Method of cleaning nozzles in inkjet printhead |
| EP1593519A2 (en) * | 2004-05-07 | 2005-11-09 | Matsushita Electric Industrial Co., Ltd. | Ink supplier for ink jet recorder |
| US20060187278A1 (en) * | 2005-02-18 | 2006-08-24 | Langford Jeffrey D | Ink recirculation system |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1995070A3 (en) | 2009-09-16 |
| ES2307428B1 (en) | 2009-10-02 |
| ES2307428A1 (en) | 2008-11-16 |
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