CN100345692C - Method and apparatus for printing on rigid panels and other contoured or textured surfaces - Google Patents
Method and apparatus for printing on rigid panels and other contoured or textured surfaces Download PDFInfo
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- CN100345692C CN100345692C CNB018149499A CN01814949A CN100345692C CN 100345692 C CN100345692 C CN 100345692C CN B018149499 A CNB018149499 A CN B018149499A CN 01814949 A CN01814949 A CN 01814949A CN 100345692 C CN100345692 C CN 100345692C
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- 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
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
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- 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
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0015—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
- B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
- B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
- B41J11/00214—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using UV radiation
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- 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
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0015—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
- B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
- B41J11/0022—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using convection means, e.g. by using a fan for blowing or sucking air
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- 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
- B41J25/00—Actions or mechanisms not otherwise provided for
- B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
- B41J25/308—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms
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- 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
- B41J25/00—Actions or mechanisms not otherwise provided for
- B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
- B41J25/308—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms
- B41J25/3086—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms with print gap adjustment means between the print head and its carriage
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Ink Jet (AREA)
- Printing Methods (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Ink jet printing is provided onto rigid panels (15) such as office clapboard which may have contoured, textured surface (16) made from three-dimensional material, or other surfaces having variable interval from rigid panels, the distance between printing elements (30, 130, 130a-130d) and position which surface will printing on thereof is not alaways or exactly predicted. Panels (15) are printed using ultraviolet light curable ink, first at least part of ink are cured by UV light, and maybe more completely cure and dry the ink to remove by using heating step, thereby removing uncured monomer through evaporating, furtherly curing or other maners. The surface (16) of rigid panels have contoured shape via sewing or moulding technics. Printhead to panel spacing is adjustable to maintain a predetermined constant distance from the printing element to the surface of the panel. Each of printheads (130a-130d) independently moveable to control the spacing of the printheads from the substrate. Sensors (40, 138) set on printhead carriage (129) measure the distance from the printhead to the surface of the substrate. Positions or focus of UV curing heads (23, 123) are variable to keep UV light focus on ink on contoured surface of substrate. UV curing heads may be located on the printhead carriage, every side of printhead has a light curing head, so that alternating work when the carriage reciprocating, spot curing and coagulating ink points immediately after ink deposited on the substrate. Cold UV sources may be used to prevent heat deformation of flat or contoured substrates, thereby making spot curing on heat-sensitive substrates.
Description
The application requires the priority of U.S. Patent application of submitting on August 30th, 2,000 09/650,596 and the U.S. Patent application of submitting to March 30 calendar year 2001 09/822,795, and they are introduced by reference at this.
Technical field
The present invention relates on hard substrate, printing, and print having on weavy grain, belt profile profile or other the three-dimensional substrate.The invention particularly relates on the substrate that for example has fabric face, molded articles, the article of hardboard, automotive interior plate or other belt profile profile and print, and relate to and use the spray printing technology to carry out this printing such as office partition.
Background technology
Has suitable interval by ink-jet printed printing ink is applied between the surface that requires printing ink nozzle and substrate to print on the substrate.Usually, this interval must be set in 1 or 2 millimeter, effectively prints by ink-jetting process with maintenance.If the distance from nozzle to printed surface is too big, become big from the skew of the desirable parallel route of the droplet of different spray nozzles.And the flight path of droplet from the printing head to the substrate is long more, the accuracy of printing more with printing head and substrate between relative velocity relevant.This correlation has limited the percentage speed variation of printing head to substrate, comprises the variation of direction.And the speed that moves to the droplet of substrate from the printing head nozzle reduces along with the distance of leaving nozzle, and the path of this droplet is along with nozzle is subjected to air-flow and the bigger influence of other factors to becoming apart from increasing of substrate.In addition, droplet leaves that nozzle motion is far away more, and the droplet shape will change, and this has changed droplet again in on-chip effect.Therefore, the variable in distance from the printing head to the substrate can cause the irregular influence of printing image.
Except printing ink being sprayed onto the lip-deep problem of belt profile profile, also be difficult to realize the curing of UV printing ink in the position of surperficial belt profile profile, UV printing ink needs the UV energy of high order focusing so that carry enough curing energy to printing ink.
When being heated, some substrate distortion, or even temporary transient distortion.This distortion can be temporary transient, and for example, material is returned to its not deformation state during cooling.Yet, even temporary transient distortion also can influence printing quality unfriendly, if it is when occurring in printing ink and being directed onto on the substrate.By immediately printing ink being exposed in the UV printing ink local solidification process that UV carries out once the contact substrate at printing ink, when ink-jet formed single or multiple seal road (passes) on printing area, the UV that is accompanied by the heating radiation can make the substrate such as cystosepiment be out of shape.
For above-mentioned reasons, on the material of belt profile profile or other three-dimensional substrate, carry out ink-jet printed and unsuccessful, when especially in ink-jet printed technology, using the UV curable ink to print.
Summary of the invention
To an object of the present invention is in order can on three-dimensional substrate, printing, especially to have height fabric, cluster shape or the irregular fabric of weavy grain and other material, printing on such as the surface of the belt profile profile of quilt and bedcover and hard or semi-hard material and other three-dimensional surface that are shaped with alternate manner in molded, punching press.A special purpose of the present invention is in order to print on these surfaces by ink-jet or digital printing technology.Of the present invention one more particularly purpose be in order to use the UV curable ink on these substrates, to print.
According to principle of the present invention, printing image by with respect to the plane of printed substrate movably printed element be applied on the three-dimensional substrate.In certain embodiments, the invention provides the ink-jet printed device of a kind of wide substrate, substrate plane can be shifted to and move apart to the printing head that this device has, and is directed onto fixed range between the surface on it with the nozzle that keeps printing head and printing ink.Make printing ink be sprayed onto on the substrate at the variable range on the substrate plane with controlled and uniform distance.
In a preferred embodiment of the present invention, printed element is an ink-jet printed assembly, and it has a plurality of ink-jet printed heads, and normally four, each printing head is used for a kind of color assignment with one group of color to substrate, thereby forms multicolor image.In order to keep constant distance or, to be provided with one or more sensor with the distance of measuring from printing head or printing ink will be ejected into the position on it on from the printing head bracket track to substrate in addition in order to control this distance.Sensor produces reference signal, and signal is given to the controller of the servomotor on the control printing head support.Printing head is rack-mount movably, for example is installed on the ball screw framework, and can shifts to and move apart the plane of substrate by the operation of servomotor.
In a preferred embodiment of the invention, each printing head in the printing head of one group of four kinds of different colours can move individually with respect to a shared printing head support, and being connected on each in one group of four servomotor, is controllable with respect to the position of substrate plane with respect to other printing head by the servomotor printing head.This group printing head preferably transversely direction be arranged in abreast on the support, making that a printing head follows hard on another printing head when the horizontal inswept substrate of support passes through the substrate width direction.Have a plurality of printing ink nozzles that the printing ink of pre-color is distributed with the form of a plurality of word points of correspondence of being used on each printing head, 128 printing ink nozzles for example, they extend along the straight line vertical with support, and this straight line is along the longitudinal direction vertical with the scanning direction of support.Two laser or optical sensor are set on support, lay respectively at every side of printing head, make when either direction scans, before printing head, can obtain range measurements from the surface to the substrate at printing head.Controller is in the profile profile of printing head front record substrate, and each printing head by the position that obtains measurement result on the time change the position of each printing head to shift to and to move apart substrate plane, make each printing head that can independently move go, and remain to a printed surperficial fixing distance along the profile profile.
Although preferably can regulate printing head or nozzle with respect to the position that is fixed on the substrate on the printing device framework, substrate surface also can alternatively be located with respect to the printing head that remains on a fixing vertical position on framework.
Preferably, UV printing ink is printed on the material, and the curing of printing ink begins to carry out by being exposed to UV light.UV solidifies light and can be installed on the printing head support, one of every side of printing head assembly, thereby exposes the surface of printing after printing head.Be installed on the printing head support by so UV being solidified light, the printing ink of injection can be immediately once the contact substrate by local (spot) curing, solidify ink dot on the throne and prevent that them from spreading or imbibition on substrate.For some substrate, UV commonly used or broad-spectrum solidify light comprise can heated substrate radiation.Under the situation of cystosepiment and several other substrates commonly used, the light heated substrate also makes its distortion.Usually, this distortion is temporary transient, because substrate only bubbles when being heated or expands and reply its reset condition when cooling.If the UV irradiation is to carry out in printing head support downstream, do not have harmful result.But by this local solidification, substrate is being printed the position distortion, thereby can influence the quality of ink-jet printed operation unfriendly.This situation can prevent like this, by using " cold UV " source or comprising filter or the light source in for example band-limited UV of other energy limited device source prevents that energy from the directive substrate of light source from having abundant energy and coming heated substrate.This also can come cured printing ink by enough UV energy that correlated frequency is provided and can heated substrate not realize.Even may being out of shape when being used in heating on the temporary transient substrate that is out of shape, the present invention prints.This distortion, the temporary transient distortion of deformation state can be owing to local solidification influence printing quality unfriendly yet even cooling the time can make material be returned to it, and local solidification is out of shape substrate when ink-jet forms single or multiple seal road on printing area.In the printing process, make this distortion of plate with the printing head height of forced adjustment on deformed region owing to heat.The printing head height is high more, because the printing quality that the flight time problem causes is poor more.By using a kind of cold UV system, printing head can drop to minimum to the variable in distance of substrate, thereby makes the printing quality optimum.
In existing practice, except we in first to file, mention, it is ink-jet printed not use local solidification to carry out on hard substrate.But, be well known that and use cold UV printing station downstream UV curing printing ink that it is used to prevent the permanent deformation or the cause thermal damage of substrate here.The temporary transient distortion that will disappear after the substrate cooling has not been a problem in the prior art.If the surface raises slightly or curls when printing ink is injected on the substrate, this distortion will be a problem, and this situation may take place in local solidification.
Follow hard on and be exposed to after the UV light, the textile substrate of printing or other have weavy grain or porous fabric to stand heating, preferably by in printing station downstream hot gas being blown on the material, this will continue the uncured components that UV light begins the curing process that carries out and removes printing ink.For the bed clothes textile material of making, the UV curable ink is ejected on the fabric, and the printing ink that sprays be exposed to UV solidify light with cured printing ink preferably to about degree of polymerization of 90% to 97%, because fabric has the printing ink that partly is cured, the printing ink that sprays is heated in hot gas air blast curing oven subsequently, the UV light polymerization that begins to carry out is therein proceeded, uncured monomer is evaporated, perhaps both carry out simultaneously, thereby produce the image that a UV printing ink is printed, it comprises uncured monomer or other ink component of low amount, for example less than 0.01%.
In the time of on UV printing ink is injected into such as the fabric of the altitudinal belt weavy grain of bedcover striped cotton fabric material, printing ink sprays with the word dot density that every kind of about 300 * 300 word points of color per inch put in every kind of about 180 * 254 words of color per inch.For some UV printing ink commonly used, utilize the ink-jet printed head of UV, four kinds of colors of four color separation palettes are applied in, and every kind for example is about 75 picoliters of every droplet or about 80 nanograms in droplet.Be provided with UV and solidify shaven head, it can move along with printing head moves together or is independent of printing head, and the UV ink droplet of deposit is exposed in the about 300 watts light beam of every linear inch, applies the energy of every square centimeter of about erg-ten, thereby produce about 90% UV curing.The printing ink that is ejected on it is passed through a baking oven subsequently by the fabric of partly UV curing, and it was heated to about 300 about 30 seconds to about 3 minutes therein.Preferably use and force hot gas in baking oven, to apply heat, but also can use other heating means such as infrared or other pharoid.Similarly parameter can be used for the hardboard of covering fabric, such as office partition.
When printing on the material of belt profile profile, the distance that will be deposited to the substrate on it from the printing head to printing ink can be by measuring from determining to the distance of substrate and the figure of drawing surface location at the sensor of printing head front.For the two-way printing head that on the fabric that vertically advances, laterally moves, two distance measurement sensors are set, lay respectively at relative each side of printing head, thereby when either direction moves, can measure the distance of the fabric face of belt profile profile when printing head.For some printing ink and sufficiently rigid material, can use mechanical roll sensor, for example, by a pair roller is set, one of them roller is positioned at the printing head front, another roller is positioned at the printing head back, makes average distance between the reference point on two rollers and the printing head can be used to control the distance from the printing head to the substrate plane.For this reason, one or more printing head can be installed in its end and have on the support of roller, makes that the mechanical connection between the roller can move printing head with respect to substrate plane.In most of the cases, non-contact sensor, for example laser or light eye sensor are preferably used for replacing each roller.Two signal of sensor at the printing head opposite side can be delivered to processor, to measure from the printing head of two-way printing head front distance to fabric, drive the servomotor is connected with printing head to raise with respect to substrate plane and to reduce printing head, make the mobile abreast and process fixed range in the surface of printing head and belt profile profile with ink jet to fabric.
By below in conjunction with the detailed description of accompanying drawing to the preferred embodiment of the present invention, it is more obvious that these and other objects of the present invention will become.
Description of drawings
Fig. 1 is the stereogram of an embodiment that embodies the device of the principle of the invention, wherein, and on the ink-jet printed hard office partition that is applied to the textile material that is covered with weavy grain or belt profile profile or fabric.
Figure 1A is the stereogram of another embodiment that similarly embodies the device of the principle of the invention with Fig. 1, wherein, and ink-jet printed being applied on the hardboard.
Fig. 2 is the cutaway view along the line 2-2 of Fig. 1, has shown to be used to keep the structure of printing head to the substrate distance, and wherein, substrate is the belt profile profile.
Fig. 2 A is and the similar cutaway view of Fig. 2 to have shown to be used to keep printing head another structure to the substrate distance.
Fig. 3 is the cutaway view along the line 3-3 of Figure 1A, has shown to be used to keep the structure of printing head to the on-chip substrate distance of belt profile profile.
The specific embodiment
Fig. 1 has shown the device 10 that is used for printing on hardboard.This device 10 comprises static framework 11, and its longitudinal extent is by arrow 12 expressions, and lateral extent is by arrow 13 expressions.Device 10 has front end 14, enters front end 14 such as the hardboard 15 that can be used to make office partition.Hardboard 15 can comprise metal or wooden frame 17, and the lining that forms printed surface 16 extends on the framework.But surface 16 also can be smooth but highly textured fabric, such as moulding material or other belt profile profile or the surface variations of foam.Hardboard 15 is vertically transported on device 10 by conveyer or transfer system 20, and conveyer 20 is formed by a pair of relative pin tentering band assembly 21, and band assembly 21 extends through device 10 and hardboard 15 is given on the band assembly at the front end 14 of device 10.Band assembly 21 remains on hardboard 15 on the accurate known lengthwise position of being with on the assembly 21, and to transport the longitudinal extent of hardboard 15 by device 10, its accurate rate is preferably 1/4 outstanding person.The lengthwise movement of the band assembly 21 of conveyer 20 is by conveyor driver 22 controls.Conveyer 20 is taked alternative form, includes but not limited to other fixed structure that relative side direction has toothed belt device, the vertical movably side direction clamping device that cooperates with hardboard 15 or is used for hardboard 15 is maintained fixed with respect to conveyer 20.
Along conveyer 20 three stations are set, comprise ink-jet printed station 25, UV photocuring station 24 and heat drying station 26.Ink-jet printed station 25 comprises having one or more ink-jet support of ink-jet printed 30 on it.The support of printing head 30 can laterally move in the front side of cross bar 28 as shown in the figure, cross bar horizontal expansion on the framework 11 and also can but not necessarily at horizontal servo-drive motor 31 and optionally vertically on framework 11, vertically move under the dynamic action of drive unit 32.Alternatively, printing head 30 can extend the whole width of hardboard 15, and is made into can prints a complete x wire that is made of selectable point simultaneously on hardboard 15.
For example be made into for ink-jet printed 30 and spray UV printing ink, and can make each form according to four color separation palettes by four kinds of colors with every droplet 75 picoliters or about 80 nanograms.Word point preferably distributes according to the resolution of the about 254 word points of the about 180 word point * per inch of per inch.Resolution can be higher as required or lower, but 180 * 254 resolution is preferred.More nice picture or bigger color saturation if desired, the resolution of per inch 300 * 300 is preferred.The droplet of different color can be side by side or stacked (dot-on-dot).Stacked (being called drop-on-drop sometimes) forms higher density.
UV solidifies station 24 and comprises UV photocuring head 23, and it can move along with printing head 30 moves or is independent of printing head 30 as shown in figure.UV photocuring head 23 is made into sharp UV light beam narrow, longitudinal extension is gathered on the printing surface of fabric.UV photocuring head 23 is provided with lateral driver device 19, and it is controlled to laterally scan the printing surface of fabric, thereby light beam is passed through on fabric.
Preferably, UV photocuring head 23 is controlled intelligently by controller 35, so that move and promptly move through the zone of not carrying out printing selectively, and make UV light only scan the image of printing, thereby avoid waste time and scan the not UV energy of printing area with the slow rate that is enough to make printing ink UV and solidifies.Be included in and print station 25 and connect into printing head 30 motions if solidify 23, UV solidifies light and can synchronously be used with the printing ink distribution after distributing being right after printing ink.
In the embodiment shown, UV curing station 24 is preferably located in the downstream of and then printing station 25 or is positioned on the printing head support of printing head sidepiece, makes that fabric stands the UV photocuring after and then printing.This support installation of solidifying head makes the printing ink point be solidified in the position of their deposits, thereby avoids ink diffusion or blotting.When especially rack-mount, UV photocuring head is cold-UV light, by using filter or narrow bandwidth radiation to avoid to heat such as the delicate substrates of cystosepiment and can avoiding substrate in the distortion of the position of droplets of ink deposit.This cold-UV solidifies photosystem and uses cold mirror, infrared cut filter and water-cooled UV to solidify, to keep substrate temperature lower.
In theory, need a UV light photon to come a free radical of cured printing ink monomer so that ink solidification.In the reality, UV solidifies 23 supply and prints one joule of UV light of surface area for every square centimeter.This realizes with the printing area of the inswept fabric of power of 300 watts of every linear inch width of light beam by making the UV light beam.This is enough to produce at least 90% UV and solidifies.The UV luminous power is increased to 600 watts of every linear inches can obtain 97% or better solidify.Alternatively, if fabric thickness and resistance photosensitiveness are not too high, solidifying light can be from the fabric projection to improve the curing of UV printing ink.Use higher power may cause fabric burned or even the burning, therefore, UV power has an actual upper bound.
Heat cure or Drying station 26 can be fixed on the framework 11 in UV photocuring station downstream or off-line ground is provided with.Because 97% UV solidifies, printing ink will be enough to colour-fast, make that Drying station can off-line.When online, Drying station should fully extend along fabric length, so that printed printing ink is solidified fully with the printed speed of fabric.When off-line was provided with, the station that is heating and curing can be to be different from the speed operation of printing speed.Heat cure at baking oven or curing station 26 makes the printing ink on the fabric remain on about 300 up to three minutes.From 30 seconds to three minutes heating were preferable range of expection.By the forced air heating is preferred, although also can use other thermal source such as infrared heater, arrives the printing ink degree of depth as long as they can pass fabric fully.
Making station for one can be provided with printing the online or off-line ground of station, and can be positioned at and print station before or afterwards.Under the situation of making cotton-wadded quilt and bedcover and make, be preferred with making the downstream that station is arranged on baking oven 26 with when impressing pattern on the fabric aligns.Can adopt such as the U.S. Patent No. 5 that is entitled as " web-fed Chain-stitchSingle-needle Mattress Cover Quilter with Needle DeflectionCompensation " of authorizing Kaetterhenry etc., 832,849 described single needles are made station, and this patent is herein incorporated by reference.Other suitable single needle type apparatus for sewing that the present invention can also use comprises and is entitled as " method of sewing and device " United States Patent (USP) N0.5,640,916 and 5,685,250 disclosed devices respectively, and they are herein incorporated by reference.This station of making also can comprise and be disclosed in U.S. Patent No. 5,154, and the spininess described in 130 is made structure, and this patent is herein incorporated by reference.
Being shaped at the making of substrate, molded or other profile is when carrying out before printing on substrate, usually needs the profile profile that applies is in advance carried out chromatography.For the profile profile that applies is in advance carried out chromatography, the position of profile profile pattern can be calculated with respect to on-chip reference point, and it can detect by being positioned at the sensor of printing station.Pattern position can directly be detected by the sensor 40 that is installed on the printing head 30, and sensor is expressed as 40a, 40b respectively in Fig. 2 and 2A.Printing head 30 comprises downwards towards nozzle or inkjet nozzle array 41 to upper surface 16 such as the substrate of hardboard 15.Hardboard 15 for example can have depressed part or groove 43 on its surface 16 by stitching or molded formation, as shown in Figure 2.Sensor 40 detects the distance from nozzle 41 to surface 16.Information from sensor 40 can be sent to controller 35, the vertical and horizontal positional information of this information and printing head 30 is interrelated and can be used for determining the position of profile profile pattern by explanation, thereby makes printing image to be applied to alignedly on the surface 16 with the profile profile pattern that applies in advance.
In the embodiment of Fig. 2, sensor 40 is mechanical pick-up device 40a that comprise the carriage 45 of belt wheel.Nozzle 41 is installed in the centre position of carriage 45, and carriage is pivotably connected to printing head 30 around the longitudinal axis 46 by carriage 45 centers again.Detect wheel 47,48 about carriage 45 has, they are placed in respectively on the surface 16 of hardboard 15 and along profile and go.Carriage 45 can vertically move and 16 profile and going surfacewise with respect to printing head 30.The nozzle 41 that is positioned at the middle part between the wheel 47,48 will be arranged on the mean value place of the vertical position of wheel 47,48 vertically.The detection position on the surface 16 of the hardboard of measuring by carriage 45 when like this, nozzle 41 can respond wheel 47,48 and is placed on the surface 16 15 and be arranged on an in check distance passively with respect to the surface 16 of hardboard 15.
UV solidify 23 and fabric between distance preferably also controlled, make that solidifying light always accurately focuses on the profile contoured surface of printing of fabric.This distance can be controlled like this, by being mounted to printing head, UV curing head moves, for example by carrying UV light, perhaps be installed on the independent support and an independent distance adjustment servomotor is set to it by UV being solidified head such as optical fiber at the contiguous printing head of an optical fiber of the every side of printing head.UV solidifies 23 independent control and can respond the sensor or the response that are used to measure the printing head distance and be provided for measuring the separated sensor that solidifies a distance.Solidify the distance of head to fabric if the printing head sensor is used to control, a memory can be used for the image of the part on storage surface or surface, at this moment controller from memory obtain with fabric on the corresponding correct distance information in position of curing head.Alternatively, UV solidifies that head can be fixed and the focal length of UV electrical distance light source automatically changes.
No matter hardboard 15 is to have profile profile pattern or only have band weavy grain material on its surface 16, can keep printing quality by the accurate interval between the surface 16 that keeps nozzle 14 and hardboard 15.Fig. 2 A has shown the hardboard 15 that is covered with thick weaving or band weavy grain fabric on its external upper 16.Horizontal when mobile on cross bar 28 when printing head 30, the point on the surface 16 of the hardboard 15 that nozzle 14 points to usually changes one or several millimeters with respect to the vertical position of printing head 30.In order to detect this variable in distance, light or laser sensor 40b are arranged on printing head 30 or are on the support apart from fabric-supported plane level altitude.Instantaneous ground of sensor 40b gaging nozzle 41 arrives the distance on the surface 16 of hardboard 15, and measurement result is sent to controller 35.Nozzle 41 is installed on the output actuator 51 of the servomotor 50 that is arranged in printing head 30.Controller 35 responses are sent to servomotor 50 from the range measurements of sensor 40b with control signal, so that the nozzle 41 on the vertical mobile printing head 30, thereby keep the constant distance of nozzle 41 to the surface 16 of hardboard 15.
Because the thickness of the hard framework of hardboard and hardboard makes that the position of upper surface of hardboard is uncertain when being supported on the framework of printing device, even the surface does not have weavy grain or profile profile, on hardboard, print and to be benefited from detecting and regulate distance from the printing nozzle to the hardboard surface.
Figure 1A has shown the alternate embodiment 100 of aforesaid device 10.Device embodiment 100 comprises static framework 111, and its longitudinal extent is by arrow 112 expressions, and lateral extent is by arrow 113 expressions.Device 100 has front end 114, and hard office partition 15 enters front end 114 and is loaded on the conveyer belt 121 of transfer system 120, and transfer system 120 has one or more and transports the batten that hardboard 15 vertically passes through device 100.The conveyer belt 121 of transfer system 120 is extending on the width of framework 111 and is being placed on the smooth stainless-steel vacuum platform 105, has upwards vacuum hole 106 arrays on the vaccum bench, and vacuum hole is communicated with conveyer belt 121 bottom sides.Conveyer belt 121 is porous, and feasible vacuum from vaccum bench 105 is delivered to hardboard 15 bottom sides by conveyer belt 121, to help gravity hardboard 15 is held in place near conveyer belt 121 upsides.Preferably, conveyer belt 121 has high friction rubber-like surface 108 to help to prevent to lay hardboard horizontal slip thereon, passes conveyer belt porose 109 array is set, to help that vacuum is delivered to substrate from vaccum bench 105.
Conveyer belt 121 upper surfaces of transfer system 120 can provide enough frictions between it and hardboard 15 bottom sides, to prevent hardboard 15 horizontal slip on transfer system 120.Transfer system 120 does not still have elasticity fully, makes it accurately to move forward.For this reason, conveyer belt 121 has stiff thin braiding backing 107, so that provide dimensional stability to conveyer belt, makes vacuum to transmit between the lip-deep hole 109 of the hole 106 of vaccum bench 105 and conveyer belt 121 simultaneously.Make conveyer belt 121 transpositions (indexing) accurately control hardboard 15 travelling forward on framework 111 by the signal controlling servo-drive motor 122 that comes self-controller 135.Therefore conveyer belt 121 remains on hardboard 15 accurate known lengthwise position on the conveyer belt 121, thereby transports the longitudinal extent of hardboard 15 by device 100.This transposition of conveyer belt 121 should can be controlled to about 0.0005 inch accurate rate, thereby moves hardboard 15 (this embodiment is not shown) with respect to the printing head that is positioned on the fixed span fitting.
In the embodiment 100 that Figure 1A shows, vertically moving by the transmission driving device controls such as servo-drive motor 122 of the conveyer belt 121 of transfer system 120 so that hardboard is moved to the printing position, and makes it move downstream after printing.The downstream batten of one or more other independent controllable drive unit 132 with control transfer system 120 can be set, if any downstream batten is arranged.
Along transfer system 120 three stations are set, comprise ink-jet printed station 125 and one or more curing or Drying station, curing or Drying station can comprise UV photocuring station 124 and/or heat drying station 126.Ink-jet printed station 125 comprises inter-access piece 128.Make hardboard 15 with respect to accurately transposition of inter-access piece 128 if conveyer belt 121 can be operated, inter-access piece can be fixed on the framework 111 and horizontal expansion thereon.Printing head support 129 can laterally move on inter-access piece 128, and has one or more ink-jet printed assembly 130 on it.Support 129 preferably is fixed on the armature of linear servomotor 131, linear servomotor 131 has the linearly aligned magnets of stator of horizontal expansion on inter-access piece 128, as mentioned above, make and support 129 can laterally be moved on inter-access piece 128 by location and the drive control signal that sends to servo-drive motor 131 by controller 135.
In the embodiment shown, inter-access piece 128 is installed to removable armature 133a, and on the 134a, armature 133a, 134a are placed in the longitudinal rail 133b that is positioned at the linear servomotor 133,134 on transfer system 120 every sides, on the 134b.In case by moving conveyor belt 121 hardboard 15 is arranged on inter-access piece 128 belows, when the cross band of an image was printed in the continuous sweep of printing head 130, inter-access piece 128 is in a longitudinal direction by transposition, and was as described below.This transposition should be accurate as required, guaranteeing to scan mutual alignment and can be as required by interlacing scan, thereby obtains required printing quality and resolution.This accurate rate is preferably about 0.0005 inch.With respect on such as poly more smooth surface, printing, lower resolution thereby be that worse accurate rate is acceptable for printing on fabric face.
Fig. 3 has shown ink-jet printed the assembly of being made up of four ink-jet printed 130a-130d 130, and they are used for applying respectively four kinds of colors of four color separation color group.Ink-jet printed 130a-130d comprises the linear array that 128 printing ink nozzles are formed respectively, and they extend along the longitudinal with respect to framework 111 and are positioned on the straight line perpendicular to the direct of travel of the support on the inter-access piece 128 129.The nozzle of each printing head 130 is made and is controlled on such as the substrate of hardboard 15 still sprays the UV printing ink of one of four color separation colors simultaneously selectively side by side, and carries out like this in a series of circulations when the substrate of nozzle scan such as hardboard 15.Ink-jet printed 130a-130d in ink-jet printed assembly is arranged side by side, print continuously on the same area such as the substrate of hardboard 15 when mobile so that convenient support 129 is horizontal on inter-access piece 128, each printing head is one of four kinds of colors of deposit in turn on such as each some position of the substrate of hardboard 15.
Among ink-jet printed 130a-130d each is installed on the support movably, so that can vertically or vertically move with respect to the plane such as the substrate of hardboard 15 respectively.Each ink-jet printed 130a-130d controls by corresponding one among one group of servo control mechanism 137a-d to the distance such as the plane of the substrate of hardboard 15, servo control mechanism is installed on the support 129, so as on such as the same profile profile of the substrate of hardboard 15 one follow another closely and go.Servo control mechanism 137a-d response is from the signal of the controller 135 of ink-jet printed 130a-d of control, so that remain to the command range such as the surface of the substrate of the 16 one-tenth profile profiles in surface of the substrate of hardboard 15 respectively.
Usually, be 16 1 fixed ranges in surface that printing head remained to print ideally.This is by the relative cross side at support 129 optical sensor 138a to be set, and 138b realizes.Printing head assembly 130 is two-way, and no matter moves right or be moved to the left and can both print.When printing head support 129 is mobile on inter-access piece 128, sensor 138a, the front measuring transducer 138 directly aligns with sensor 138 to the surface 16 such as the substrate of hardboard 15 among the 138b, normally is positioned at the distance of the point under the sensor 138.This measurement result is passed to controller 135, distance that controller record is measured and the coordinate that obtains the measurement result place on the surface 16 such as the substrate of hardboard 15.These coordinates only need to comprise the on-chip lateral attitude such as hardboard 15, will be used to obtain therein the support of measurement result with one stroke or in scanning in these positional informations.But by the position of the hardboard 15 on the consideration framework 111 with respect to inter-access piece 128, controller 135 also can write down vertical coordinate.
The response measurement result, when on corresponding printing head arrives such as the substrate of hardboard 15, obtaining the horizontal coordinate place of each measurement result, controller 135 control servo control mechanisms 137 are so that each ink-jet printed 130 perpendicular positioning becomes to 16 1 preset distances of profile contoured surface such as the substrate of hardboard 15.As a result, postpone V/B second go along the profile profile of fabric after obtaining predetermined measurement result with the preceding face sensor 138 nearest printing head 130 of preset distance B and the preceding face sensor of distance 138 of being separated by, wherein V is the speed of support 129 on inter-access piece 128.Similarly, printing head 130 spacing distance A, and the V/A after last printing head will distinguish successively along going with the first printing head same profile profile second.
The size of printing head 130 longitudinal directions has determined that printing head is along such as the profile profile of the substrate of hardboard 15 and the accurate rate of row.By using narrower printing head, for example use each printing head in a longitudinal direction that the printing head of 64 or 32 spouts is arranged, can keep bigger accurate rate, and can go along changing bigger profile profile.Therefore, organize printing head 130 can be according to rectangle or other arranged in arrays on support 129 more, make not on the same group printing head on support 129 along being arranged side by side such as the substrate of hardboard 15 and the longitudinal direction of framework 111.For example, each printing head has two groups of printing heads of 64 spouts or two groups of printing heads that each printing head has 32 spouts and will produce 128 identical words respectively and put wide scanning, but when the profile profile changes on such as the substrate of hardboard 15 in a longitudinal direction, have bigger ability and keep the interval of printing head to substrate.
Under the situation of using the UV curable ink, UV solidifies station 124 and is provided with shown in Figure 1A.It can comprise can be independent of the printing head 23 that printing head 130 laterally moved or be positioned at printing station 125 downstreams in inter-access piece 128 downstreams, and/or can comprise the UV photocuring head 123a that is installed on the support 129,123b.Horizontal when mobile on inter-access piece 128 when support 129, have only a curing 123a who follows in printing head 130 back, 123b is moved, and makes to shine printing ink after UV light is on printing ink is deposited on such as the substrate of hardboard 15.Solidify a 123a, 123b also can shift to and move apart such as the plane of the substrate of hardboard 15 and can be respectively by servo control mechanism 139a, and 139b control is to keep their intervals apart from surface 16, as shown in Figure 3.The suitable solidifying requirements UV light of UV printing ink is focused on the surface that has printing ink.Therefore, mobile UV solidifies a 123a, and 123b will keep the focusing of UV curing light with the constant distance that is maintained to surface 16.UV photocuring head is made into usually sharp narrow longitudinal extension UV light beam is focused on the printed surface.Therefore, mobile UV photocuring head or light source 123a on the alternative physical, 123b, photocuring head 123a, the focal length of 123b can be changed to adapt to the profile profile such as the substrate of hardboard 15.In use, photocuring head 123 can be made into similarly with respect to the surface 16 such as the substrate of hardboard 15 and vertically move.
Be heating and curing or Drying station 126 can be fixed on the framework 111 printing station 125 and UV photocuring station 124 downstreams, and also can the off-line setting.This Drying station 126 can be used for by hot gas, radiation or other heating technique dry solvent type printing ink.It also can be used for further solidifying or dry UV printing ink.
Because the thickness of the hard framework of hardboard and hardboard makes that the position of upper surface of hardboard is uncertain when being supported on the framework of printing device, even the surface does not have weavy grain or profile profile, on hardboard, print and to be benefited from detecting and regulate distance from the printing nozzle to the hardboard surface.
Foregoing description has been represented the preferred embodiments of the present invention.Those skilled in the art will appreciate that under the situation that does not break away from the principle of the invention and can carry out different changes and increase the present invention.
Claims (38)
1, a kind of method of printing on substrate comprises the steps:
With a supported plane parallel thereon of substrate in a plurality of substrates move the printing head support that has at least one printing ink nozzle on it, each substrate has the surface that changes with respect to described plane;
For each substrate in a plurality of substrates, when being parallel to described plane and moving, the printing head support will detect the surface of substrate from the position of nozzle ejection at printing ink, and regulate distance, will be sprayed onto preset distance of substrate surface on it from nozzle so that make nozzle be positioned at printing ink from nozzle to described plane; And
Printing ink is ejected on the surface of each substrate a plurality of substrates through described preset distance from nozzle.
2, the method for claim 1 is characterized in that:
Printing ink is the UV curable ink; And
This method comprises that further the printing ink by making injection is exposed to ultraviolet light, solidifies at least in part to be ejected into described lip-deep printing ink.
3, the method for claim 1 is characterized in that, also comprises the steps:
From being positioned at the position that sensor on the support detects the surface of each substrate; And
In response to described detection, regulate distance from nozzle to described plane.
4, the method for claim 1 is characterized in that:
Described adjusting comprises when the printing head support moves in response to the position of detection change nozzle in surface with respect to described plane, to be maintained to the preset distance of substrate surface.
5, the method for claim 1 is characterized in that, described substrate is a hardboard, and described method also comprises:
Move the printing head support that has the printing ink nozzle on it with hardboard, described printing ink nozzle is towards the hardboard surface with paralleling;
Automatically regulate the distance of nozzle, so that keep nozzle and will be ejected into preset distance between the hardboard surface of the position on it from the printing ink of nozzle to hardboard.
6, method as claimed in claim 5 is characterized in that:
The distance on the hardboard surface from the support to the ink jet on it changes across whole hardboard; And
Adjusting comprises when printing head moves the position that changes nozzle with respect to hardboard, is ejected into preset distance between the position on it so that keep printing ink on nozzle and the surface.
7, method as claimed in claim 6 is characterized in that, also comprises the steps:
Detect printing ink on printing head support and the surface and will be ejected into distance between each position in a plurality of positions on it; And
The distance that response detects changes the position of nozzle with respect to the printing head support.
8, method as claimed in claim 6 is characterized in that, also comprises the steps:
Detect the profile profile on hardboard surface; And
Support is moved to the position that profile profile that response detects is determined with paralleling with described hardboard, and in described position with ink jet to the hardboard surface.
9, a kind ofly be used to control the printing head of printing system and the method for the distance between the substrate, comprise the steps:
Relatively mobile substrate and printing head;
When substrate and printing head are relatively mobile, will be ejected into the surface that substrate is detected in position on it at printing ink;
The information of the detected position of substrate surface is delivered to controller;
Be delivered to the motor that is connected with the support that printing head is housed with regulating the information signal slave controller; And
By the position of motor adjusting printing head, to keep the required gap between printing head and the substrate.
10, method as claimed in claim 9 is characterized in that, the position probing of substrate surface comprises the distance that detects between printing head and the substrate.
11, method as claimed in claim 10 is characterized in that, also comprise range information is delivered to controller, and the position that readjusts printing head based on the distance that detects.
12, method as claimed in claim 9 is characterized in that, also comprises each substrate is placed on the workbench that is suitable for supporting substrate.
13, method as claimed in claim 9 is characterized in that:
The relatively moving of substrate and printing head comprises with respect to printing head mobile substrate longitudinally;
This method also comprises with respect to substrate horizontal mobile printing head on support; And
Transmission information comprises the sensor passes information from the support.
14, method as claimed in claim 13 is characterized in that, transmission information comprises at least one the sensor passes information from least two rack-mount sensors.
15, method as claimed in claim 9 is characterized in that, by regulating the position of support with respect to substrate, signal indication motor is regulated the position of printing head, to keep the required gap between printing head and the substrate.
16, method as claimed in claim 9 is characterized in that, by regulating the position of printing head with respect to support, signal indication motor is regulated the position of printing head, to keep the required gap between printing head and the substrate.
17, a kind of method of printing on a plurality of substrates of being used for comprises the steps: for each substrate
Substrate is placed on the workbench;
Carry out method as claimed in claim 9; And
Impressing pattern on substrate.
18, method as claimed in claim 17 is characterized in that, detects the step of substrate surface, transmission conditioning signal and adjusting backing positions and automatically carries out, and do not need user intervention basically.
19, method as claimed in claim 17 is characterized in that, transmission information comprises from least one rack-mount sensor passes information.
20, method as claimed in claim 19 is characterized in that, the relatively moving of substrate and printing head comprise with respect to printing head mobile substrate longitudinally, and with respect to substrate horizontal mobile printing head on support.
21, method as claimed in claim 20 is characterized in that, transmission information comprises at least one the sensor passes information from least two rack-mount sensors.
22, a kind of device that is used for printing on substrate surface comprises:
Have the framework of substrate support mounted thereto and printing head track, substrate support defines substrate support plane, and the printing head parallel track extends in described plane;
At least one ink-jet printed head with position at least one nozzle thereon, ink-jet printed head supports in orbit movably, makes nozzle towards the substrate surface that is supported by substrate support;
Can move will be from the sensor of the distance of the substrate surface part of nozzle ejection on it to be determined to printing ink;
The nozzle response can move to the substrate surface preset distance perpendicular to described plane from the signal of sensor;
Controller, described controller can move with moving nozzle and control nozzle, thereby by making printing ink be ejected on the substrate surface through preset distance and print at substrate from nozzle.
23, device as claimed in claim 22 is characterized in that, also comprises:
Be positioned at the UV photocuring head on the framework, it is arranged to make the printing ink that is ejected on the substrate surface by printing head to be exposed to UV light;
UV photocuring head can move perpendicular to described plane; And
Controller can move to move and solidify head, thereby keeps UV photocuring head to printing ink will be ejected into the interval of the substrate surface on it from printing head.
24, device as claimed in claim 22 is characterized in that, sensor is the non-contact type range unit.
25, device as claimed in claim 22 is characterized in that:
Sensor is the non-contact type range unit, and it comprises light source and installation photo-detector in orbit; And
Track also has servomotor mounted thereto, and the position of nozzle is regulated in the servomotor response from signal of sensor.
26, device as claimed in claim 22 is characterized in that:
Sensor comprises the removable mechanical organ that keeps in touch with substrate surface; And
Nozzle is connected on the mechanical organ, moves so that respond mechanical organ.
27, a kind of system that is used for impressing pattern on substrate comprises:
Rack-mount a plurality of printing heads, printing head are arranged to the substrate certain distance;
Detect the sensor that printing head and printing ink will be ejected into gap between the substrate surface on it;
The gap information that reception is detected by sensor is also transmitted the controller of signal to the motor that is connected with support, and the signal that is transmitted indication motor is regulated the position of printing head with respect to substrate, with the required gap between maintenance printing head and the substrate.
As system as described in the claim 27, it is characterized in that 28, controller receives from the gap information signal of sensor and handles the gap information signal, and provides and will be delivered to the signal of motor, regulating the position of printing head, thereby keep required gap.
29, as system as described in the claim 27, it is characterized in that motor is a servomotor.
30, as system as described in the claim 27, it is characterized in that sensor comprises roller.
31, as system as described in the claim 27, it is characterized in that, also comprise the workbench that is suitable for supporting substrate.
As system as described in the claim 31, it is characterized in that 32, when substrate moved through described system, sensor can move to detect substrate surface.
As system as described in the claim 27, it is characterized in that 33, when substrate moved through described system, sensor can move to detect substrate surface.
34, as system as described in the claim 27, it is characterized in that sensor is rack-mount.
35, as system as described in the claim 27, it is characterized in that sensor comprises two rack-mount sensors.
36, as system as described in the claim 27, it is characterized in that:
Printing head is two-way printing head, prints when mobile when the printing head spanning substrate is horizontal, and described substrate can vertically move with respect to printing head; And
Sensor is included in laterally two rack-mount sensors of printing head, and the every side of printing head has a sensor.
37, as system as described in the claim 27, it is characterized in that, by regulating the position of support with respect to substrate, motor based on the signal operation to regulate the position of printing head, to keep the required gap between printing head and the substrate.
38, as system as described in the claim 27, it is characterized in that, by regulating the position of printing head with respect to support, motor based on the signal operation to regulate the position of printing head, to keep the required gap between printing head and the substrate.
Applications Claiming Priority (4)
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| US65059600A | 2000-08-30 | 2000-08-30 | |
| US09/650,596 | 2000-08-30 | ||
| US09/822,795 | 2001-03-30 | ||
| US09/822,795 US6523921B2 (en) | 2000-08-30 | 2001-03-30 | Method and apparatus for printing on rigid panels and other contoured or textured surfaces |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101819161A Division CN101219611A (en) | 2000-08-30 | 2001-08-30 | Method and apparatus for printing on rigid panels and other contoured, textured or thick substrates |
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| CN1449332A CN1449332A (en) | 2003-10-15 |
| CN100345692C true CN100345692C (en) | 2007-10-31 |
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| CNB018149499A Expired - Fee Related CN100345692C (en) | 2000-08-30 | 2001-08-30 | Method and apparatus for printing on rigid panels and other contoured or textured surfaces |
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| EP (1) | EP1313619B1 (en) |
| JP (1) | JP2004508220A (en) |
| CN (1) | CN100345692C (en) |
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| DE (1) | DE60133827D1 (en) |
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- 2001-08-30 CN CNB018149499A patent/CN100345692C/en not_active Expired - Fee Related
- 2001-08-30 AU AU2001288539A patent/AU2001288539A1/en not_active Abandoned
- 2001-08-30 AT AT01968282T patent/ATE393705T1/en not_active IP Right Cessation
- 2001-08-30 CA CA002420285A patent/CA2420285A1/en not_active Abandoned
- 2001-08-30 EP EP01968282A patent/EP1313619B1/en not_active Expired - Lifetime
- 2001-08-30 WO PCT/US2001/027023 patent/WO2002018148A1/en active Application Filing
- 2001-08-30 IL IL15463601A patent/IL154636A/en not_active IP Right Cessation
- 2001-08-30 JP JP2002523292A patent/JP2004508220A/en active Pending
- 2001-08-30 DE DE60133827T patent/DE60133827D1/en not_active Expired - Lifetime
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| JPS61164836A (en) * | 1985-01-18 | 1986-07-25 | Toyo Ink Mfg Co Ltd | Recording method |
| US4841306A (en) * | 1987-09-17 | 1989-06-20 | Burlington Industries, Inc. | Multi-color fluid jet pattern generator for textiles |
| US5757389A (en) * | 1991-09-25 | 1998-05-26 | Horst Schwede | Printing device for objects, which are continously moved forward, in particular for parcels, wrapped magazine piles or the like |
| US5455607A (en) * | 1993-05-03 | 1995-10-03 | Hewlett-Packard Company | Black text quality in printers using multiple black and color pens |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109922965A (en) * | 2017-01-27 | 2019-06-21 | 惠普发展公司，有限责任合伙企业 | Control the injection of printing-fluid drop |
| US10899127B2 (en) | 2017-01-27 | 2021-01-26 | Hewlett-Packard Development Company, L.P. | Controlling printing fluid drop ejection |
| CN109922965B (en) * | 2017-01-27 | 2021-03-12 | 惠普发展公司，有限责任合伙企业 | Method and system for printing |
Also Published As
| Publication number | Publication date |
|---|---|
| IL154636A0 (en) | 2003-09-17 |
| WO2002018148A1 (en) | 2002-03-07 |
| ATE393705T1 (en) | 2008-05-15 |
| EP1313619B1 (en) | 2008-04-30 |
| JP2004508220A (en) | 2004-03-18 |
| CA2420285A1 (en) | 2002-03-07 |
| IL154636A (en) | 2005-11-20 |
| AU2001288539A1 (en) | 2002-03-13 |
| CN1449332A (en) | 2003-10-15 |
| EP1313619A4 (en) | 2004-07-14 |
| EP1313619A1 (en) | 2003-05-28 |
| DE60133827D1 (en) | 2008-06-12 |
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