CN104936785B - Ink-jet printer and printing process - Google Patents
Ink-jet printer and printing process Download PDFInfo
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- CN104936785B CN104936785B CN201480005539.4A CN201480005539A CN104936785B CN 104936785 B CN104936785 B CN 104936785B CN 201480005539 A CN201480005539 A CN 201480005539A CN 104936785 B CN104936785 B CN 104936785B
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- ink gun
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- 238000007639 printing Methods 0.000 title claims description 40
- 238000000034 method Methods 0.000 title claims description 24
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- 230000008859 change Effects 0.000 claims abstract description 27
- 239000002250 absorbent Substances 0.000 claims abstract description 25
- 230000002745 absorbent Effects 0.000 claims abstract description 24
- 239000000084 colloidal system Substances 0.000 claims abstract description 19
- 238000007641 inkjet printing Methods 0.000 claims abstract description 14
- 239000004816 latex Substances 0.000 claims description 82
- 229920000126 latex Polymers 0.000 claims description 82
- 230000009471 action Effects 0.000 claims description 21
- 238000005507 spraying Methods 0.000 claims description 14
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- 230000033228 biological regulation Effects 0.000 claims description 5
- 230000002776 aggregation Effects 0.000 claims 1
- 238000004220 aggregation Methods 0.000 claims 1
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- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 6
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- 230000001804 emulsifying effect Effects 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
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- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
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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
- B41J2/21—Ink jet for multi-colour printing
- B41J2/2107—Ink jet for multi-colour printing characterised by the ink properties
- B41J2/2114—Ejecting specialized liquids, e.g. transparent or processing liquids
-
- 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
- B41J11/0024—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using conduction means, e.g. by using a heated platen
- B41J11/00244—Means for heating the copy materials before or during printing
Landscapes
- Ink Jet (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
Abstract
Problem is to be properly formed the layer of multiple ink on non-absorbent medium.As solution, the non-absorbent medium (50) not absorbing ink is printed by this ink-jet printer (10) with ink-jetting style, this ink-jet printer (10) possesses: ink gun (12y～k), and it sprays the ink droplet of the first ink；Subscan drive division (20), it is the relative location change portion making the medium (50) each position on moving direction set in advance relative with ink gun (12y～k) successively；Ink gun (14), it is disposed in the position than ink gun (12y～k) downstream on the moving direction of medium (50), the ink droplet of the second ink that this ink gun (14) ejection is different from the first ink；And printer heater (24), wherein, the first ink is the ink of colloid solution.
Description
Technical field
The present invention relates to a kind of ink-jet printer and printing process.
Background technology
In recent years, ink-jet printer is used as various uses (referring for example to non-patent literature 1.).Such as,
In recent years, the purposes such as advertisement ink-jet printer being disposed in the outdoor as printing.And, such
In purposes, vinyl chloride, PET etc. non-absorbent is widely used in order to improve the weatherability of printed article
Medium (media).It addition, as the ink be suitable to the situation that such medium prints, extensively make
With UV ink (ultraviolet hardening ink).Further, in order to realize improving further printed article weatherability,
Improving the glossiness etc. of printed article, practice widely followed is: the printed article after utilizing UV ink to print
Surface on, utilize transparent ink formed top layer.
Non-patent literature 1: internet url: http://www.mimaki.co.jp
Summary of the invention
The problem that invention is to be solved
Transparent ink is typically water white ink.Therefore, (following on the top layer forming transparent ink
It is referred to as clear layer) in the case of, there is the ink of other color if transparent ink blends, then ink
Bleeding is obvious, and the quality of printed article is greatly lowered.Therefore, color inks etc. is being utilized to carry out printing
The layer (dyed layer) arrived is upper form clear layer in the case of, need formerly to carry out to print the dyed layer that obtains
Ink prints under conditions of blending mutually with the transparent ink being ejected on this dyed layer.
In contrast, UV ink solidifies rapidly due to ultraviolet irradiation and is bonded to medium.Therefore,
In the case of UV ink layer forms clear layer, if UV ink is shone before overlapping transparent ink
Penetrate ultraviolet, then can suitably prevent UV ink from blending mutually with transparent ink.It is additionally, since and has
Such advantage, therefore, in the past, clear layer is the most used along with UV ink.It addition, the most not
Clear layer can be formed in the ink layer formed by the ink beyond UV ink.
But, when UV ink have cured due to ultraviolet irradiation, sometimes it is difficult to fully
Improve the flatness (flatness) of ink dot.Therefore, even if being formed on clear layer, the most also cannot
Obtain enough glossiness.Further, since the printed face that arranged of UV ink dot concavo-convex greatly, therefore
Exist air enter printed face and be formed at clear layer on UV ink dot etc. between situation.It addition,
As its result, there is also the situation that the quality of printed article reduces.
It is thus possible, for instance the new method being expected that by method different from the past is printed, to obtain energy
Access the high-quality printed article of enough weatherabilities and glossiness.It addition, such as expectation the method is
The method more suitably forming multiple ink layer on non-absorbent medium.Therefore, the purpose of the present invention
It is to provide a kind of ink-jet printer that can solve the problem that the problems referred to above and printing process.
For solving the scheme of problem
In order to solve the problems referred to above, first present inventor has discussed the ink beyond by UV ink
Combine use with transparent ink.And, first, formed using aqueous ink, solvent inkjet ink etc.
Chromatograph is also formed on the situation of clear layer and has carried out investigation and various experiments etc..Feelings at these inks
Under condition, if dyed layer is dry insufficient, then the ink of dyed layer can be mixed in transparent ink, causes
The most colourless clear layer catches unnecessary color.Accordingly, it would be desirable to made dyed layer before forming clear layer
Fully it is dried.Accordingly, as the method making dyed layer fully be dried before forming clear layer, discuss
Following methods.
First, the lower thickness making dyed layer has been discussed to improve drying property.But, in this case,
Weatherability declines, such as, sometimes cannot obtain required weatherability in the purposes such as outdoor advertising use.Separately
Outward, there is also the worry that colour developing is insufficient.Therefore, it is difficult to suitably print by the method.
Therefore, raising has then been discussed for making the temperature of the printer heater of ink dried to make ink
It is dried within the shorter time.But, in this case, if making heating-up temperature too high, then can produce
The problem such as wrinkling of medium.It addition, when the temperature of printer heater uprises, be also easy to produce ink-jet
The problems such as the nozzle of head is dried.Accordingly, it is difficult to make heating-up temperature rise significantly.It addition, its result
It is also to be difficult to by the method suitably print.
It addition, in order to make dyed layer the driest before forming clear layer, such as it is the most right to also contemplate
The whole face of medium carries out the printing of dyed layer, is fully forming clear layer after drying afterwards.But, at this
In method, the time needed for printing is elongated, causes operability significantly to decline.Therefore, the method is passed through
Also it is difficult to suitably print.
Therefore, it follows that present inventor's mode (characteristic) of being conceived to make to be dried is according to ink
Kind is different and different.And, for various inks, the volatile ratio of solvent by experimental verification
Relation etc. between example and ink viscosity.
And, first, by this experiment it is found that compared to solvent inkjet ink etc., latex ink is with the steaming of solvent
The state sending out amount (evaporation ratio) less makes ink viscosity rise.I.e., it was found that: by using latex ink,
Can realize being difficult to mix with transparent ink less than the state of the dry amount of other ink with the dry amount of ink
Mixed state.It addition, finding that latex ink has this characteristic by wholwe-hearted research afterwards is owing to it is glue
The ink of liquid solution.
Even if also it is found that when the temperature of printer heater is suppressed into low temperature, by root
Ink gun and the ink gun of transparent ink that dyed layer is formed is configured, also according to the characteristic of this latex ink
Can suitably prevent the ink of dyed layer from blending mutually with transparent ink.It addition, by attentively grinding afterwards
Study carefully the such effect of discovery and be not limited to situation overlapping with clear layer for dyed layer, more generally useful, will be many
Individual ink layer also is able in the case of being formed overlappingly obtain identical effect.Present inventor based on
Above discovery and the present invention that completes has following structure.
(structure 1) a kind of ink-jet printer, enters the non-absorbent medium not absorbing ink with ink-jetting style
Row printing, this ink-jet printer possesses: the first ink gun, and it sprays the ink droplet of the first ink to medium；
Location change portion relatively, it is by being situated between to moving direction set in advance conveying relative to the first ink gun
Matter, makes medium each position in the direction of movement relative with the first ink gun successively；Second ink gun,
It is disposed in than the first ink gun downstream on the moving direction of the medium relative to the first ink gun
Position, the second ink gun is to the ink droplet of medium ejection second ink different from the first ink；And
Heater, it is at least disposed in the first ink gun across the relative position of medium, wherein, the first ink
Water is the ink of colloid solution.
In the structure shown here, the first ink gun and the second ink gun stagger on the relative moving direction of medium
Ground, position arranges.Therefore, like this constitute in the case of, such as can by the second ink gun to
The period before the ink droplet of the second ink is sprayed, by arranging on the first ink dot formed by the first ink gun
First ink dot is heated by the heater of the printing zone in the underface of the first ink gun.It addition, by making
It is used as the first ink of the ink of colloid solution, it is possible to realize with the state that the dry amount of ink is fewer
It is difficult to the state blended mutually with the second ink.
Therefore, according to this structure, such as, the second ink can overlapped the ink formed by the first ink
Make the first ink adequately and sufficiently be dried at least the first ink on point before and the second ink is mixed mutually
Mixed degree.It addition, thereby, it is possible to formed by the ink layer formed by the first ink with by the second ink
Ink layer formed in the way of suitably overlapping.
Additionally, the first ink gun and the second ink gun are staggered on the relative moving direction of medium by what is called
Position ground arrange, can be these ink guns substantially staggered positions arrange.What is called substantially staggers position
Arrange with putting, such as, refer to that being set in each ink gun sprays the part of the nozzle of ink droplet at medium
On moving direction, staggered positions ground arranges.It addition, being set in so-called each ink gun sprays ink droplet
Nozzle, the e.g. nozzle in addition to nominal nozzle, this nominal nozzle is the part spray in nozzle rows
Being set in mouth does not sprays the nozzle of ink droplet.
It addition, in the case of constituting like this, by using the ink of colloid solution, it is possible to non-suction
The medium of the property received suitably prints.Therefore, if constituted like this, then can be non-absorbent
The layer of multiple ink it is properly formed on medium.
Here, so-called non-absorbent medium, e.g. formed by the material of the solvent not absorbing ink
Medium.Such as preferably the medium of vinyl chloride, PET etc. can be used as non-absorbent medium.If picture
So constitute, then can suitably improve the weatherability of printed article.Such as it also is able to metal etc. as non-
Absorbefacient medium.
It addition, in the structure shown here, the first ink is e.g. for forming the color inks of dyed layer.Such as,
First ink can be the ink of a certain color in YMCK ink.It addition, about the first ink
Constituting, the ink of colloid solution can be such as suspension (dispersion liquid) type or supernatant liquid (emulsifying) type
Ink.More specifically, it is possible to preferably latex ink is used as the first ink.If constituted like this,
Then the medium of vinyl chloride, PET etc. can be properly formed dyed layer.
The layer of the second ink is e.g. covered with the top layer of chromatograph.In this case, by by medium
The full version that regulation region fills with fixing concentration prints (full version printing, Japanese: ベ タ lettering) and is formed
The layer of the second ink.It addition, the second ink e.g. transparent ink.In this case, such as pass through
Clear layer is formed, it is possible to more suitably improve the weatherability of printed article on dyed layer.It addition, the second ink
It can also be the ink beyond transparent ink.Such as, the second ink can be colourless beyond transparent ink
Ink.More specifically, the second ink can also be such as that white, metallochrome, pearl etc. have spy
The ink of color.
It is believed that in the case of ink as described above is used as the second ink, when the ink of dyed layer
When water and the second ink blend mutually, bleeding is the most obvious.Therefore, these inks are being used as the second ink
In the case of, when the first ink and the second ink blend mutually, the quality of printed article is decreased obviously.Relatively
In this, if constituted as described above, then can suitably prevent the first ink and the second ink from blending mutually.
It addition, thereby, it is possible to more suitably carry out high-quality printing.
(structure 2) first ink is latex ink.If constituted like this, then can to vinyl chloride, PET or
The non-absorbent medium of person's metal etc. suitably prints.
It addition, in the case of latex ink is used as the first ink, it is possible to more suitably being dried with ink
Measure the state that fewer state realizes being difficult to blend mutually with the second ink.Therefore, if constituted like this,
Then can more suitably form the layer of multiple ink on non-absorbent medium.
Medium is heated by (structure 3) heater in the position relative with the first ink gun, thus to medium
Each position made the colloid comprised in the first ink before spraying the ink droplet of the second ink on the first ink
Assemble.If constituted like this, then can more suitably realize with the state that the dry amount of ink is fewer
First ink and the second ink are difficult to the state blended mutually.It addition, thus, such as can be at nonabsorbable
Medium on more suitably form the layer of multiple ink.
(structure 4) first ink is the ink that dyed layer is formed, and this dyed layer is the ink being colored
Layer, the first ink gun is formed including at least the first ink by spraying the ink droplet of the first ink to medium
Dyed layer that is first ink layer, the second ink gun is by spraying the ink droplet of the second ink in the first ink layer
The second ink is utilized to form the second ink layer covering the first ink layer.
Second ink layer e.g. covers the top layer of the first ink layer.If constituted like this, then can be more
It is properly formed the second ink layer being covered with chromatograph.It addition, it is possible to more suitably print be laminated with
The printed article of multiple ink layer.
(structure 5) second ink is transparent ink, and the second ink gun is by carrying out the district of the regulation on medium
The full version that territory fills with fixing concentration prints, and utilizes transparent ink to form the second ink layer.If picture
So constitute, then can be properly formed clear layer on dyed layer.It addition, thus, such as can enter
One step improves weatherability and the glossiness of printed article.
(structure 6) second ink is not make the after being bonded to medium first black water-soluble ink.If as this
Sample is constituted, then can more suitably prevent the first ink and the second ink from blending mutually.
Here, such as there is following worry: according to each self-contained composition of the first ink and the second ink,
It may happen that the first ink is at the second ink in the case of overlapping second ink on the first ink
In solvent dissolve re-dissolved and cause ink to blend mutually.Such as, organic solvent is comprised as molten in utilization
The solvent inkjet ink (Japanese: ソ Le ベ Application ト イ Application Network) of matchmaker formed dyed layer and on this dyed layer overlapping bag
In the case of transparent ink containing organic solvent, even if temporarily making solvent inkjet ink be dried, the solvent in dyed layer
Ink sometimes also due to organic solvent in transparent ink and there is re-dissolved.If in contrast, as knot
Structure 6 is constituted like that, then can suitably prevent the re-dissolved of the first ink.
Additionally, more specifically, such as in the case of the latex ink of aqueous is used as the first ink, energy
The most preferably the ink with organic solvent as solvent is used as the second ink.It addition, more specifically, inciting somebody to action
The latex ink of aqueous is used as in the case of the first ink, such as can be preferably by not make the latex after set
The ink that organic solvent is solvent that ink dissolves is used as second inks such as transparent ink.Have it addition, such
The organic solvent etc. of machine solvent e.g. hydrophobicity (nonpolar).
Medium is heated by (structure 7) heater in the position relative with the first ink gun so that the temperature of medium
Degree is in the range of 35 DEG C～80 DEG C.Such as set the upper of heating-up temperature according to the heat resisting temperature of medium
Limit.If constituted like this, then can suitably medium be heated without the temperature exceedingly improving medium
Degree.It addition, it is possible to suitably to prevent being dried of the nozzle of wrinkling, the ink gun of medium.
Further, by medium being heated to more than 35 DEG C, it is possible to make the first ink adequately and sufficiently be dried
The degree blended mutually at least the first ink and the second ink.It addition, thereby, it is possible to suitably prevent
First ink and the second ink blend mutually and bleeding occur.
(structure 8) the first ink gun and the second ink gun by carrying out while to main scanning set in advance
Direction is moved while spraying the main scanning action of ink droplet, prints medium, and moving direction is parallel
Direction in the sub scanning direction orthogonal with main scanning direction.If constituted like this, then can be by the
The each several part of medium is suitably printed by one ink gun and the second ink gun.It addition, thus, such as
The layer of multiple ink can be more suitably formed on medium.
(structure 9) second ink gun arranges as changing position in the direction of movement, according to by first
Thickness, the temperature of heater of layer that is first ink layer of the ink that ink gun is formed and make the first ink
The most a certain item in the time that layer is dried sets the second ink gun position in the direction of movement.
In the case of constituting like this, such as the action formed after the first ink dot, it is possible to pass through
The position changing the second ink gun suitably adjusts the timing of overlapping second ink on the first ink dot.Separately
Outward, thereby, it is possible to suitably adjust the dry amount of the first ink of the timing at overlapping second ink.Cause
This, if constituted like this, then can more suitably form the layer of multiple ink on medium.Additionally,
The most both the change of the position of the second ink gun can manually have been carried out, it is also possible to driving by motor etc.
The change of the dynamic position automatically carrying out the second ink gun.
(structure 10) a kind of ink-jet printer, prints medium with ink-jetting style, this ink-jet printer
Possessing: the first ink gun, it sprays the ink droplet of the first ink to medium；Location change portion relatively, it leads to
Cross relative to the first ink gun to moving direction pumped (conveying) medium set in advance, make medium at moving direction
On each position relative with the first ink gun successively；Second ink gun, it is relative to the first ink gun
Be disposed in the position than the first ink gun downstream on the moving direction of medium, this second ink gun to
The ink droplet of the second ink that medium ejection is different from above-mentioned first ink；And heater, it at least arranges
In with the first ink gun across the relative position of medium, wherein, the second ink gun arranges as changing
Position in the direction of movement, according to layer that is first ink layer of the ink formed by the first ink gun
Thickness, the temperature of heater and make the most a certain item in the time that the first ink layer is dried set
Two ink guns position in the direction of movement.
In the case of constituting like this, such as can after forming the first ink dot on medium until
The region being formed with the first ink in medium is suitably added by the period of the most overlapping second ink level
Heat.It addition, such as the action formed after the first ink dot, it is possible to by changing the second ink gun
Position suitably adjusts the timing of the most overlapping second ink.
Therefore, if constituted like this, then can suitably adjust overlapping second ink timing first
The dry amount of ink.It addition, by this adjustment, the such as period before the timing of overlapping second ink,
The first ink can be made suitably to be dried at least the first ink and degree that the second ink blends mutually.Separately
Outward, thus, the layer of multiple ink can be such as properly formed on medium.
(structure 11) a kind of printing process, enters the non-absorbent medium not absorbing ink with ink-jetting style
Row printing, this printing process uses following structure: the first ink gun, it sprays the first ink to medium
Ink droplet；Location change portion relatively, it is by defeated to moving direction set in advance relative to the first ink gun
Send medium, make medium each position in the direction of movement relative with the first ink gun successively；Second ink-jet
Head, it is disposed on the moving direction relative to the above-mentioned medium of the first ink gun and leans on than the first ink gun
The position in downstream, the second ink gun sprays the ink of second ink different from the first ink to medium
Drip；And heater, it is at least disposed in the first ink gun across the relative position of medium, wherein,
First ink is the ink of colloid solution.If constituted like this, then can obtain identical with structure 1
Effect.
(structure 12) a kind of printing process, prints medium with ink-jetting style, and this printing process uses
Following structure: the first ink gun, it sprays the ink droplet of the first ink to medium；Location change portion relatively,
It passes through relative to the first ink gun to moving direction pumped (conveying) medium set in advance, makes medium move
Each position on direction is relative with the first ink gun successively；Second ink gun, it is relative to the first ink-jet
It is disposed in the position than the first ink gun downstream, the second ink gun on the moving direction of the medium of head
The ink droplet of second ink different from the first ink is sprayed to medium；And heater, it is at least disposed in
With the first ink gun across the relative position of the mode of medium, wherein, the second ink gun arranges as can
Change position in the direction of movement, according to layer that is first ink of the ink formed by the first ink gun
The thickness of layer, the temperature of heater and make the most a certain Xiang Laishe in the time that the first ink layer is dried
Fixed second ink gun position in the direction of movement.If constituted like this, then can obtain and structure 10
Identical effect.
The effect of invention
According to the present invention, such as, can be properly formed the layer of multiple ink on non-absorbent medium.
Accompanying drawing explanation
Figure 1A～Fig. 1 C is that ink-jet printer 10 involved by an embodiment of the invention is described
The figure of example.Figure 1A is the side view of an example of the structure representing ink-jet printer 10.Figure 1B is to represent spray
The top view of one example of the structure of the major part of ink printer 10.Fig. 1 C represents by ink-jet printer 10
One example of the situation of the medium 50 printed.
Fig. 2 is the table of the measured value of the viscosity representing the ink under each drying time.
Fig. 3 is the chart representing the result shown in Fig. 2.
Fig. 4 is the table of the measured value representing the viscosity of ink and weight reduction rates.
Fig. 5 is the chart representing the result shown in Fig. 4.
Fig. 6 A～Fig. 6 C represents and until making the ink droplet inking of transparent ink in this after forming dyed layer
The experimental result of the time delay till dyed layer.Fig. 6 A illustrates experiment condition.Fig. 6 B is shown for respectively
The result that the bleeding of the temperature planting time delay and printer heater judges.Fig. 6 C illustrates colour-transparent
The estimation result of spacing L.
Detailed description of the invention
Below, it is explained with reference to embodiment involved in the present invention.Figure 1A～Fig. 1 C is that this is described
The figure of one example of the ink-jet printer 10 involved by one embodiment of invention.Figure 1A is to represent that ink-jet is beaten
The side view of one example of the structure of print machine 10.Figure 1B is the structure of the major part representing ink-jet printer 10
The top view of an example.Fig. 1 C represents the one of the situation of the medium 50 printed by ink-jet printer 10
Example.
In this example, ink-jet printer 10 is with the ink-jetting style non-absorbent medium to not absorbing ink
(media) 50 carry out the printing equipment printed.Non-absorbent medium 50 e.g. vinyl chloride, PET's etc.
The medium of thin film.Medium 50 can be such as the medium of drum.Such as, it is also possible to use metal etc. to make
For non-absorbent medium 50.It addition, medium 50 can also is that by other of the solvent not absorbing ink each
Plant the medium that material is formed.
In this example, ink-jet printer 10 possess control portion 28, multiple ink gun 12y, 12m, 12c,
12k, 14, platen 16, main scanning drive division 18, subscan drive division 20, pre-heater 22, print
Machine heater 24 and post-heater 26.
It addition, in ink-jet printer 10, preset in the drawings as the main scanning shown in Y-direction
Direction and in the drawings as the sub scanning direction shown in X-direction.This main scanning direction is and main scanning action
In the parallel direction of the moving direction of each ink gun.Main scanning action is each ink gun while spraying ink droplet
While the printing action (scanning motion) of movement.It addition, this sub scanning direction be with relative to each ink gun
The direction that the moving direction (conveying direction) of the medium 50 in the subscan action of pumped (conveying) medium 50 is parallel.
The CPU of control portion 28 e.g. ink-jet printer 10, moving of each several part of control ink-jet printer 10
Make.It addition, the instruction that control portion 28 such as receives according to the master computer from ink-jet printer 10 is controlled
The each several part of ink-jet printer 10 processed.
Multiple ink gun 12y, 12m, 12c, 12k, multiple ink gun 12y in 14,12m, 12c,
12k (set forth below for ink gun 12y～k) is the first ink spraying the ink as colloid solution respectively
One example of the first ink gun of ink droplet, sprays the latex ink of the example as the first ink to medium 50
The ink droplet of (Latex ink).It addition, in this example, the first ink can also be the coloured silk that dyed layer is formed
Chromatic ink.Ink gun 12y～k sprays yellow (Y), magenta (M), cyan (C) and black (K) respectively
The ink droplet of the latex ink of these shades of colours, forms dyed layer the most like that on medium 50
102.Dyed layer 102 is an example of the first ink layer including at least the first ink.
Additionally, so-called latex ink, polymeric material is e.g. made to be bonded to the ink of medium by being dried.
This polymeric material e.g. waterborne polymeric material.It addition, this polymeric material is the most elastomeric
Polymeric material.Latex ink composition such as comprise the latex resin as polymeric material, water, solvent,
Additive, smooth agent, viscosity modifier, UV absorbent and coloring agent etc..Wherein, ultraviolet
Absorbent is for preventing color inks from fading and protecting the composition of medium.It addition, coloring agent is to make ink
The composition coloured thinly.According to this example, it is possible to various non-absorbent media 50 are suitably printed
Brush.
Use the ink of the colloid solution beyond latex ink as the first ink it addition, further contemplate.So-called glue
The ink of liquid solution, e.g. suspension (dispersion liquid) type or the ink of emulsion (emulsifying) type.?
The characteristic etc. of the latex ink of the example as the first ink is described the most in further detail.
Ink gun 14 is the one of the second ink gun of the ink droplet spraying second ink different from the first ink
Example.It addition, in this example, the second ink is transparent ink.Ink gun 14 is by spraying to medium 50
The full version that the ink droplet of bright ink is carried out the regulation region on medium 50 fills with fixed concentration prints.
It addition, ink gun 14 is disposed in than ink gun 12y～k downstream on the conveying direction of medium 50
Position, thus the position on sub scanning direction is arranged as staggering with the position of ink gun 12y～k.
It addition, in this example, ink gun 14 arranges as to leave from ink gun 12y～k on sub scanning direction.Spray
Ink 14 such as can also arrange into by interconnected grade by the position on sub scanning direction and ink-jet
Stagger in the position of head 12y～k.
And, by being configured so that, each position of medium 50 is being printed ink gun 12y～k
Afterwards, ink gun 14 sprays the ink droplet of transparent ink to each position of medium 50.It addition, thus, ink-jet
14 utilize transparent ink shape on the dyed layer 102 formed by ink gun 12y～k as shown in Figure 1 C
Become to be covered with the clear layer 104 of chromatograph 102.Clear layer 104 is layer that is second ink layer of the second ink
One example.
According to this example, it is possible to be properly formed clear layer 104 on dyed layer 102.It addition, thus, example
If improving weatherability and the glossiness of printed article further.
Additionally, in this example, transparent ink comprises UV absorbent.In this case, clear layer 104 times
The weatherability of the dyed layer 102 in face such as according to the difference of the coating weight of transparent ink and different.Cause
This, ink gun 14 such as can also have the ejection that can change transparent ink according to required weatherability
The structure of amount.Such as, ink gun 14 can be by the full version filled with the concentration of 100% by printing zone
Print the thickness of one layer that clear layer 104 is formed regulation, in addition to this it is possible to be, by printing
Brush region fills the clear layer 104 of the thickness of the half that can form above-mentioned a layer with the concentration of 50%.Separately
Outward, it is also possible to be, by printing zone is filled with the concentration of 200% can be formed above-mentioned one layer two
The clear layer 104 of thickness again.
Use the ink beyond transparent ink as the second ink it addition, further contemplate.Such as, the second ink
It can be the colorless ink beyond transparent ink.It addition, more specifically, the second ink can also be white
Color, metallochrome, pearl etc. have distinctive ink.It addition, in the case of using these inks,
Ink gun 14 the most also forms the top layer being covered with chromatograph 102 as the layer of the second ink.
Platen 16 be by medium 50 by with multiple ink gun 12y～k, 14 relative in the way of carry out the platform that keeps.
Main scanning drive division 18 is for making multiple ink gun 12y～k, 14 structures carrying out main scanning action, example
As included balladeur train and guide rail etc..In this case, balladeur train by multiple ink gun 12y～k, 14 with medium
50 relative modes keep.It addition, the movement that rail guidance balladeur train is on main scanning direction.Thus,
Multiple ink gun 12y～k, 14 carry out while on main scanning direction move while spraying ink droplet to medium 50
Main scanning action.It addition, in main scanning action, multiple ink gun 12y～k, 14 such as sweep to master
Retouch direction to move and on road and multiple the two direction, road, spray ink droplet cross medium 50.
Subscan drive division 20 is for the structure to sub scanning direction pumped (conveying) medium 50.Subscan drive division
20 can be such as the drive division that the roller to pumped (conveying) medium 50 is driven.It addition, this roller can be such as
Batch by ink gun 12y～k, the roller of 14 media 50 printed.
It addition, subscan drive division 20 is by multiple ink gun 12y～k, 14 main scanning actions carried out
Interval carries out the subscan action to sub scanning direction pumped (conveying) medium 50.Thus, subscan drive division 20 makes
The medium 50 each position on sub scanning direction successively with multiple ink gun 12y～k, each ink-jet in 14
Head is relatively.
Additionally, in this example, subscan drive division 20 is an example in relative location change portion.Subscan is driven
Dynamic portion 20 by pumped (conveying) medium 50 relative to multiple ink gun 12y～k, 14 be situated between to sub scanning direction conveying
Matter 50, make the medium 50 each position on sub scanning direction successively with ink gun 12y～k, each spray in 14
Ink head is relative.It addition, in the variation of the structure of ink-jet printer 10, it is possible to use with this example
The structure of the different method pumped (conveying) medium 50 of method as relative location change portion.It addition, relative position
Changing unit can also make ink gun 12y～k, 14 sides move relative to the medium 50 securing position.
Pre-heater 22, printer heater 24 and post-heater 26 are the heating to medium 50 heating
Device.Wherein, pre-heater 22 be disposed on the conveying direction of medium 50 than multiple ink gun 12y～k,
Any one ink gun in 14 by the heater of position of upstream side, by multiple ink gun 12y～k,
Medium 50 is heated by the position before 14 ejection ink droplets.
Printer heater 24 is to be disposed in the position relative with ink gun 12y～k as the first ink gun
One example of the heater at place.In this example, printer heater 24 is by being disposed in and multiple ink guns
12y～k, 14 across the relative position of medium 50, come in medium 50 by ink gun 12y～k, 14
Spray the part heating of ink droplet.
It addition, in this example, printer heater 24 in the position relative with ink gun 12y～k to Jie
Matter 50 heats, and is thus spraying each position of medium 50 in the latex layer of ink formed by ink gun 12y～k
Make latex ink be dried before going out the ink droplet of transparent ink, thus fully improve the viscosity of latex ink.
Here, make latex ink be dried the situation being not limited to be completely dried, example by printer heater 24
As, fully it is dried to the degree being prevented from blending mutually with transparent ink.It addition, enter below
One step is described in detail the phenomenon that the viscosity of latex ink improves due to heating.
It addition, medium 50 is such as added by printer heater 24 in the position relative with ink gun 12y～k
Heat so that the temperature of medium 50 is in the range of 35 DEG C～80 DEG C.If constituted like this, then can
Suitably medium 50 is heated the temperature without exceedingly improving medium 50.It addition, it is thereby, it is possible to suitable
Locality prevents the nozzles such as wrinkling, ink gun 12y～k of medium 50 to be dried.
Additionally, such as set the upper limit of heating-up temperature according to the heat resisting temperature of medium 50.Such as, inciting somebody to action
In the case of the medium of PET is used as medium 50, it is possible to be heated to about 80 DEG C.But, such as by chlorine
In the case of the medium of ethylene is used as medium 50, preferably the upper limit of the heating-up temperature of medium 50 is set as lower
Temperature.In the case of the medium 50 using vinyl chloride, the printer heater 24 heating to medium 50
Temperature e.g. 35 DEG C～70 DEG C, it is more preferred to 35 DEG C～60 DEG C.
It addition, in the case of heating within the scope of above-mentioned temperature, by carrying out more than 35 DEG C add
Heat, additionally it is possible to latex ink is adequately and sufficiently dried to the ink i.e. latex ink that at least dyed layer is formed
The degree blended mutually with transparent ink.It addition, thereby, it is possible to suitably prevent dyed layer from being formed
Ink blends mutually with transparent ink and bleeding occurs.
Post-heater 26 be on the conveying direction of medium 50 than printer heater 24 downstream
The heater that medium 50 is heated by position, to by the medium 50 after multiple ink gun 12y～k, 14 printings
Heating.According to this example, such as can as desired to the cost time medium 50 is heated.It addition, thus,
Such as can suppress the heating-up temperature of printer heater 24.It addition, such as can make to be printed by full version
The clear layer 104 formed is the driest.
In the case of constituting as above, such as, by latex ink is used as what dyed layer was formed
Ink, it is possible to be properly formed dyed layer 102 on non-absorbent medium 50.It addition, by utilizing
Main scanning action that main scanning drive division 18 and subscan drive division 20 are carried out and subscan action, it is possible to make
Suitably print with multiple ink gun 12y～k, each several part of 14 pairs of media 50.Further, at medium
Upstream side configuration ink gun 12y～k on the conveying direction of 50, configures ink gun 14, thus in downstream
Clear layer 104 can be properly formed on dyed layer 102.Therefore, according to this example, it is possible in non-absorbing
It is properly formed multiple ink layer, i.e. dyed layer 102 and clear layer 104 on the medium 50 of property.Thus, example
If suitably improving weatherability and the glossiness of printed article.
It addition, in this example, as discussed above, ink gun 12y～k arranges with ink gun 14
Stagger for the position on sub scanning direction.Such as, as shown in Figure 1B, ink gun 12y～k and ink gun 14
Arrange as being separated in the way of separating predetermined distance L.Accordingly, for the same position on medium 50
Speech, is carried out the timing of timing and the printing carried out by ink gun 14 printed to looking younger by ink gun 12y～k
Every medium 50 being carried the time needed for the distance between ink gun 12y～k and ink gun 14.
Therefore, according to this example, such as, can formed, by ink gun 12y～k, the ink dot that dyed layer is formed
The time is suitably vacated afterwards until the ink droplet being sprayed transparent ink by ink gun 14 on this ink dot.
It addition, thereby, it is possible to during this period by printer heater 24 to being formed with the ink that dyed layer is formed
The medium 50 of point heats.
It addition, as explanation the most in further detail, in this example, by by colloid solution
Ink i.e. latex ink be used as dyed layer formed ink, it is possible to the shape that the dry amount of ink is fewer
State realizes the state being difficult to blend mutually with transparent ink.Therefore, according to this example, such as can be by transparent
The ink that dyed layer is formed before overlapping on the ink dot that dyed layer is formed by ink is fully dried to
The degree that the ink that at least dyed layer is formed blends mutually with transparent ink.It addition, thereby, it is possible to will
Dyed layer 102 and clear layer 104 are formed in the way of the most overlapping.
Here, distance L between ink gun 12y～k and ink gun 14 can be each in ink gun 12y～k
Distance between nozzle rows in individual ink gun and the nozzle rows in ink gun 14.Additionally, it is preferred that can become
More distance L between ink gun 12y～k and ink gun 14.For example, it is preferable to ink gun 14 arranges as becoming
The more position on sub scanning direction.In this case, the position of ink gun 14 such as can manually be carried out
The change put, it is also possible to automatically carried out the change of the position of ink gun 14 by the driving of motor etc.
More.It addition, for example, it is preferable to according to the thickness of dyed layer 102 formed by ink gun 12y～k, printer
The temperature of heater 24 or make the most a certain item in the time that dyed layer 102 is dried to set ink gun
14 positions on sub scanning direction.
In the case of constituting like this, by changing the position of ink gun 14, such as can be for formation
Action after the ink dot of dyed layer suitably adjusts overlapping transparent ink on the ink dot of this dyed layer
The timing of water.It addition, thereby, it is possible to suitably adjust the dyed layer in the timing of overlapping transparent ink and use
The dry amount of ink.Therefore, if constituted like this, then more suitably can be formed on medium 50
Multiple ink layer.
Then, the characteristic of the latex ink etc. of an example of the ink as colloid solution is described in further detail
Deng.Fig. 2～Fig. 5 is the figure of the experimental result representing the viscosity about latex ink.Fig. 2 and Fig. 3 illustrate about
The experimental result of the relation of the viscosity of drying time and ink.Fig. 2 is to represent the ink in each drying time
The table of measured value of viscosity.Fig. 3 is the chart representing the result shown in Fig. 2.It addition, Fig. 4 and Fig. 5 table
Show the experimental result of the viscosity about ink and the relation of weight reduction rates.Fig. 4 is the viscosity representing ink
Table with the measured value of weight reduction rates.Fig. 5 is the chart representing the result shown in Fig. 4.
In the case of being printed by ink-jet printer, inking ink on medium is such as owing to adding
Heat waits and viscosity improves, and is quickly become the state of solid, is thus bonded to medium.Therefore, passing through
Being dried in the case of making ink be fixed on medium, the state that ink is the most fully dried is that the viscosity of ink is not filled
Divide the state improved.Therefore, present inventor is conceived to the viscosity owing to adding thermally-induced ink
Change, is determined and subtracts with weight with the relation of the viscosity of ink and the viscosity of ink drying time
The experiment of the relation of few rate.
In this experiment, two kinds of black and a kind of solvent inkjet inks of latex are used as to measure the ink of object.By strain formula
Commercial firm drives known latex ink (hereinafter referred to as latex ink 1) and the public affairs of other company manufacture that hired herdsman's journey manufactures
Latex ink (hereinafter referred to as latex ink 2) known is used as two kinds of latex ink.
Here, these latex ink are the latex ink with general composition.Such as, latex ink 1 comprises
The organic pigment (yellow) of alcohol series solvent, 1%～5% of glycol ethers series solvent, 20%～40% of 10%～30%
And other organic principle of 5%～10%.It addition, remainder is water.Latex ink 2 also has identical
Composition.
It addition, use known solvent inkjet ink that Mimaki Eng KK manufactures as a kind of solvent inkjet ink (with
It is referred to as down solvent inkjet ink 1).This solvent inkjet ink 1 is the solvent inkjet ink (solvent inkjet ink) with general composition, comprises
The lactone series solvent of glycol ethers series solvent, 10%～20% of 70%～80%, the nickel compound of 5% and
The vinyl resins of 1%～5%.Additionally, in this experiment, for the ease of experiment, the ink of yellow is used
Make above-mentioned each ink.However, it is believed that also be able to obtain phase in the case of the ink using other color
Same effect.
It addition, in an experiment, above-mentioned three kinds of inks (latex ink 1, latex ink 2, solvent inkjet ink 1) are measured weight
Amount slip (wt%) also measures viscosity.Specifically, above-mentioned three kinds of inks being respectively placed in temperature is 60 DEG C
Temperature chamber in, often through drying time, measure the weight reduction rates of ink and measured by viscometer
Viscosity.Additionally, the sample size of each ink in temperature chamber is respectively 10g.It addition, the perseverance in viscometer
The temperature of temperature groove is 25 DEG C.
Understanding according to the chart shown in Fig. 3 etc., the viscosity of above-mentioned three kinds of inks is all along with the warp of drying time
Cross and rise.But, the viscosity of mode and solvent inkjet ink 1 that the viscosity at latex ink 1 and latex ink 2 rises
It is very different between the mode risen.
Such as, in latex ink 1 and latex ink 2, in the stage that drying time is comparatively short, viscosity quickly on
Rise.On the other hand, in solvent inkjet ink 1, in the period before drying time to a certain degree, viscous
Degree the most slowly rises.It is therefore contemplated that in latex ink 1 and latex ink 2, viscous based on solvent inkjet ink 1
Spend the rising of the different principle generation viscosity of the principle risen.
It addition, understand according to the chart shown in Fig. 5 etc., the viscosity of above-mentioned three kinds of inks is all along with ink
The increase of weight reduction rates and rise.It is believed that this represents molten along with in ink of the viscosity of ink
Matchmaker is evaporated and is risen.But, in this case, latex ink 1 and latex ink 2 viscosity rise mode with
Also it is very different between the mode that the viscosity of solvent inkjet ink 1 rises.
Such as, in latex ink 1 and latex ink 2, the weight reduction rates at ink reaches ratio to a certain degree
The time point of rate, viscosity rapid increase.More specifically, the such as result represented according to Fig. 4 can
Knowing, be changed to the timing of 44.2% from 44.0% at the weight reduction rates of ink, the viscosity of latex ink 1 exceedes
25 times of ground significantly rise.It addition, be changed to the timing of 53.9% from 50.5% at the weight reduction rates of ink,
The viscosity of latex ink 2 significantly rises more than 30 times of ground.On the other hand, in solvent inkjet ink 1, this will not occur
Sample viscosity drastically rises, and compared with latex ink 1 and latex ink 2, the viscosity of solvent inkjet ink 1 is the most gradually
Rise.Therefore, according to this result it is also contemplated that latex ink 1 and latex ink 2 in, based on solvent inkjet ink
The rising of the principle generation viscosity that principle that the viscosity of 1 rises is different.
Here, in the case of considering based on shown result, the compositions of ink such as Fig. 3 and Fig. 5,
Think about solvent inkjet ink (solvent inkjet ink 1), show the ratio of the solvent in ink and steam along with the solvent in ink
Send out and reduce, as a result of which it is, viscosity gradually steps up.On the other hand think, in the case of latex ink,
The reason that viscosity rises is not only in that solvent evaporates, and also resides in and sends out in the ink along with the minimizing of solvent
Some phase change raw, thus viscosity rapid increase.
Therefore, present inventor's reason zooming to the viscosity in latex ink is carried out further
Investigation, is conceived in latex ink the size of particle that the comprises size than the particle comprised in solvent inkjet ink etc.
Greatly, latex ink is the ink of colloid solution.That is, latex ink is the ink comprising polymeric material, therefore
Comprise the particle that size is bigger than the size of the particle in solvent inkjet ink etc..Furthermore, it is believed that the amount at solvent is enough
Under many states, this polymeric material is evenly dispersed in ink.
But, in the case of comprising the particle that size is big, in the ink, the frictional force produced between particle
Become big.Additionally, it is believed that in the ink, when the ratio of solvent reduces, interparticle distance shortens, and rubs
The impact of wiping power quickly becomes big.It is therefore contemplated that in the case of latex ink, when the ratio of solvent is due to molten
The evaporation of matchmaker and when being reduced to following to a certain degree, it is impossible to ignore the impact of interparticle friction.It addition,
Think as a result of which it is, due to the phenomenons such as such as thixotroping (shaking change), the viscosity rapid increase of ink.
On the other hand, the size of the particle comprised in solvent inkjet ink is than the size of the particle comprised in latex ink
It is little, result, it is believed that before there is such phenomenon, solvent evaporates the most completely.Additionally, it is believed that its
Result is, the rapid increase of viscosity as latex ink will not occur in solvent inkjet ink.
It addition, about dispersion particle in the solution, in general, the size of particle is the biggest, then particle
Between act on the biggest gravitation.And, it is believed that in the case of particle is colloidal particle, due to charged shadow
Ringing, intermolecular gravitation becomes the biggest.It is therefore contemplated that in latex ink, when the ratio of solvent subtracts
Few following time, power that interparticle gravitation is dispersed in solvent more than particle to be made and make grain
In subset.Additionally, it is believed that its result is that the rapid increase of viscosity occurs.Additionally, it is believed that latex ink wraps
The colloid contained is assembled due to the heating of printer heater 24, improves the viscosity of ink.In this situation
Under, it is believed that colloid is such as cured as gel due to heating.
And, in the case of putting in view of these, in the ink-jet printer 10 of this example, by making
Latex ink for the ink of colloid solution is used as the ink that dyed layer is formed, and comes with shorter drying time
Improve viscosity fully, it is achieved that be difficult to the state blended mutually with other ink.It addition, make ink gun
Stagger with the ink gun 14 position on sub scanning direction in 12y～k position on sub scanning direction, and
Printer heater 24 is disposed in the position relative with ink gun 12y～k, it is possible to realizing practicality
Print speed printing speed in the range of, the period before spraying the ink droplet of transparent ink on dyed layer makes coloring
The ink of layer is the driest.Therefore, according to this example, such as, the ink of dyed layer can suitably be prevented
Water blends mutually with transparent ink.It addition, thereby, it is possible to be properly formed clear layer on dyed layer.
Additionally, in the above description, the sight of the necessary item from the relation between explanation and the present invention
Point sets out, and only latex ink 1, latex ink 2 and solvent inkjet ink 1 is illustrated experimental result.But, this Shen
Inventor please has been also carried out identical reality to the various inks (such as aqueous ink) etc. beyond above-mentioned ink
Test, discuss.And, according to these results, the zooming phenomenon of viscosity as described above is latex
Phenomenon specific to ink isocolloid solution, is impossible phenomenon in common solvent inkjet ink, aqueous ink.
It addition, in the case of aqueous ink, be inherently unsuitable for non-absorbent medium is printed.Therefore,
In the case of non-absorbent medium is formed the layer of multiple ink, aqueous ink is not used as coloring
The ink of layer.
It addition, as illustrated by above-mentioned, in order to suitably prevent the ink of dyed layer with transparent
Ink blends mutually, and it is effective for making the ink of dyed layer be dried at short notice.Therefore, it is also believed that
If making ink rapid draing this point, the solvent inkjet ink of low-boiling volatile solvent will be comprised
Ink as dyed layer.
But, the solvent inkjet ink comprising such volatile organic solvent is big, the most sometimes to the load of environment
Needs are avoided using this solvent inkjet ink.It addition, utilizing solvent inkjet ink in the case of forming dyed layer, exist
Following worry: when overlapping transparent ink on this dyed layer, occurs dyed layer ink due to transparent ink
The solvent that comprises in water and the problem of re-dissolved again dissolved.It addition, as a result of which it is, also result in
Bright layer generation bleeding.
In contrast, in the situation of the ink that the ink of latex ink isocolloid solution is used as dyed layer
Under, compared to the situation using the solvent inkjet ink comprising volatile solvent, it is possible to the suppression load to environment.
Therefore, it is possible to the most more suitably print.
It addition, as in this example use latex ink isocolloid solution ink prevent ink re-dissolved this
Also it is effective on a bit.I.e., it is possible to think, when due to heating, viscosity improves, breast
Particle in celluloid ink flocks together with the state being mutually close to.Furthermore, it is believed that in this condition between particle
Distance little, therefore, the state being dispersed in solvent compared to particle, between particle effect gravitation very big.
Even if it is therefore contemplated that other ink overlapping on the layer of the latex ink of the state that improve in viscosity, being not easy to
There is the re-dissolved of ink.That is, in the case of the dyed layer of latex ink forming clear layer, latex ink
And the relation between transparent ink is: transparent ink is to make the latex ink after being fixed on medium 50 molten
The ink solved.Therefore, according to this example, it is possible to more suitably prevent ink and the transparent ink of dyed layer
Blend mutually.
It addition, more specifically, such as in the situation of the ink that the latex ink of aqueous is used as dyed layer
Under, it is considered to use the transparent ink with organic solvent as solvent.It addition, such as consideration will be (non-with hydrophobicity
Polarity) organic solvent etc. be solvent ink be used as the solvent of transparent ink.If constituted like this,
Then can more suitably prevent re-dissolved.
It addition, in this example, realize being dried with few by latex ink is used as the ink of dyed layer
Amount improves the structure of the viscosity of ink.Thus, it is also possible to make the heating-up temperature by printer heater 24
Step-down.It addition, thereby, it is possible to suitably prevent the heating-up temperature of medium 50 from excessively raising.Further, exist
In this example, in addition to using printer heater 24, also use pre-heater 22 and post-heater 26, by
This can more suitably prevent the excessive temperature of medium 50 from improving.
Such as, as it has been described above, in this example, the latex ink as the ink of dyed layer is dried with few
Amount improves the viscosity of ink.Therefore, it is possible to make to be disposed in the position relative with ink gun 12y～k
The temperature of printer heater 24 becomes the low temperature being prevented from the range of wrinkling grade.But, also deposit as
Lower worry: in the case of the temperature of printer heater 24 is low temperature, the upper raising speed of the temperature of medium 50
Spend slack-off, thus be difficult to carry out suitable heating within the required time.In contrast, in this example,
In the position of the upstream side leaning on conveying direction than printer heater 24, the most right by pre-heater 22
Medium 50 heats.Therefore, according to this example, even if using the situation of printer heater 24 that temperature is low
Under, it is also possible to more suitably medium 50 is heated.
It addition, in this example, also in the position in the downstream leaning on conveying direction than printer heater 24
It is equipped with post-heater 26.Therefore, in the position of printer heater 24, as long as ink can be made to fill
The degree point being dried to not blend mutually with transparent ink, make in the range of viscosity rises, it is not necessary to one
Surely it is allowed to be dried to such as in view of required in the case of impact when batching action, keeping after printing
Level.It addition, without making the clear layer formed by ink gun 14 be completely dried.
And, in this case, compared to only the most right by pre-heater 22 and printer heater 24
The situation of medium 50 heating, it is possible to spend the time to be sufficiently dried in the position of post-heater 26.
Thereby, it is possible to make dyed layer and clear layer adequately and sufficiently be dried.Therefore, according to this example, it is possible to more
Suitably suppress the heating-up temperature of printer heater 24 grade.It addition, thereby, it is possible to more suitably prevent
The problem occurred because of the heating of medium 50.
It addition, present inventor is in the wholwe-hearted research to the present invention, further acknowledged that logical by experiment
The structure of the ink-jet printer 10 crossing this example suitably can print with practical and appropriate printing condition
Brush etc..Therefore, below, this point is illustrated.
Present inventor is about from being formed after dyed layer until making the ink droplet inking of transparent ink exist
Time delay (time difference) till on dyed layer has carried out various experiment.The ink-jet used in this experiment is beaten
Print machine is to spray on the basis of the ink-jet printer JV400-130LX that Mimaki Eng KK manufactures
The inkjet printing that the ink structure of head, print speed printing speed etc. have obtained after having carried out the change and adjustment of suitable necessity
Machine.
Fig. 6 A～Fig. 6 C represents and until making the ink droplet inking of transparent ink in it after forming dyed layer
The experimental result that time delay till on is relevant.Fig. 6 A illustrates experiment condition.Fig. 6 B is shown for respectively
The result that the bleeding of the temperature planting time delay and printer heater judges.Additionally, in the following description
In, the average translational speed of head refers to the ink gun average translational speed in main scanning action.It addition,
The average transporting velocity of medium refers to the medium average transporting velocity in subscan action.At inkjet printing
In machine, determine print speed printing speed according to these speed.It addition, set the ink gun of dyed layer formation with saturating
Between the ink gun that bright layer is formed, the distance on sub scanning direction is colour-transparent spacing L.This colour
-transparent spacing L is the distance suitable with distance L shown in Figure 1B.
After testing with the printing condition shown in Fig. 6 A, it is possible to confirm, as shown in Figure 6B
In the case of the temperature of printer heater is 70 DEG C like that, even if time delay is 0.5 second～0.6 second, thoroughly
Bright layer also will not occur bleeding.It addition, this time delay be equivalent to set colour-transparent spacing L as
The situation of 0.169mm.Thereby, it is possible to confirm, such as, setting the temperature of printer heater as 70 DEG C
In the case of Zuo You, be appropriately suppressed the bleeding of clear layer by the structure of actual ink-jet printer.
It addition, be able to confirm that out, in the case of the temperature of printer heater is more than 60 DEG C, pass through
Time delay is the structure of 97.7 seconds, and clear layer will not occur bleeding.It addition, this time delay is equivalent to
If colour-transparent spacing L is the situation of 18.457mm.Thereby, it is possible to confirm, even if such as beating
In the case of the temperature of print machine heater is about 60 DEG C, also can by the structure of actual ink-jet printer
Enough bleedings suitably suppressing clear layer.In addition it is possible to confirm, such as by set time delay as
More than about 100 seconds, it is possible to the temperature of printer heater is suppressed at about 60 DEG C.
In addition it is possible to confirm, in the case of the temperature of printer heater is more than 50 DEG C, logical
Crossing the structure that time delay is 178.5 seconds, clear layer will not occur bleeding.It addition, this time delay is suitable
In setting the colour-transparent spacing L situation as 27.263mm.Thereby, it is possible to confirm, even if such as existing
In the case of the temperature of printer heater is about 50 DEG C, by the structure of actual ink-jet printer also
Can suitably suppress the bleeding of clear layer.In addition it is possible to confirm, such as by setting time delay
It it is more than about 180 seconds, it is possible to the temperature of printer heater is suppressed at about 50 DEG C.
It addition, based on these results to according to print speed printing speed (the average translational speed of head, medium average
Transporting velocity) and printer heter temperature determine colour-transparent spacing L estimated.Fig. 6 C shows
Go out the estimation result of colour-transparent spacing L.According to this estimation result, by the inkjet printing of this example
The structure of machine 10, it is possible to suitably print with practical and appropriate printing condition.
Although additionally, eliminate detailed description, but present inventor is to setting printer heater
The temperature situation less than 50 DEG C has been also carried out various experiment.And, it is thus identified that even if setting printer heater
Temperature less than 50 DEG C, as long as carrying out heating so that the temperature of such as medium is more than 35 DEG C, it becomes possible to logical
The structure of the ink-jet printer crossing reality suitably suppresses the bleeding etc. of clear layer.Therefore, in this case,
It also is able to suitably enter with practical and appropriate printing condition by the structure of the ink-jet printer 10 of this example
Row printing.
Above, use embodiment to illustrate the present invention, but the technical scope of the present invention is not limited to
State in the scope described in embodiment.Those skilled in the art should be understood that, it is possible to executes above-mentioned embodiment
Add numerous variations or improvement.According to the record of claims, carry out such change or change
Mode that is good and that obtain also is able to be included in the technical scope of the present invention.
Industrial applicability
The present invention such as can be adapted to for ink-jet printer.
Description of reference numerals
10: ink-jet printer；12y～k: ink gun (the first ink gun)；14: ink gun (the second ink-jet
Head)；16: platen；18: main scanning drive division；20: subscan drive division (relative location change portion)；
22: pre-heater；24: printer heater；26: post-heater；28: control portion；50: medium；
102: dyed layer；104: clear layer.
Claims (11)
1. an ink-jet printer, is carried out the non-absorbent medium not absorbing ink with ink-jetting style
Printing, this ink-jet printer is characterised by possessing:
First ink gun, it is upwards given an account of matter and sprays the ink droplet of the first ink；
Location change portion relatively, it passes through relative to above-mentioned first ink gun to moving direction set in advance
Carry above-mentioned medium, make above-mentioned medium each position on above-mentioned moving direction spray with above-mentioned first successively
Ink head is relative；
Second ink gun, it is on the above-mentioned moving direction of the above-mentioned medium relative to above-mentioned first ink gun
Being disposed in the position than above-mentioned first ink gun downstream, this second ink gun upwards gives an account of matter ejection
The ink droplet of second ink different from above-mentioned first ink；And
Heater, it is at least disposed in above-mentioned first ink gun across the relative position of above-mentioned medium,
Wherein, above-mentioned first ink is the latex ink of the colloid solution that polymeric material is uniformly dispersed.
Ink-jet printer the most according to claim 1, it is characterised in that
Above-mentioned medium is heated by above-mentioned heater in the position relative with above-mentioned first ink gun, the most right
The each position of above-mentioned medium made before spraying the ink droplet of above-mentioned second ink on above-mentioned first ink
State the colloid aggregation comprised in the first ink.
Ink-jet printer the most according to claim 1, it is characterised in that
Above-mentioned first ink is the ink that dyed layer is formed, and this dyed layer is the layer of the ink being colored,
Above-mentioned first ink gun sprays the ink droplet of above-mentioned first ink and is formed at least by upwards giving an account of matter
Comprise dyed layer that is first ink layer of above-mentioned first ink,
Above-mentioned second ink gun comes by spraying the ink droplet of above-mentioned second ink in above-mentioned first ink layer
Above-mentioned second ink is utilized to form the second ink layer covering above-mentioned first ink layer.
Ink-jet printer the most according to claim 3, it is characterised in that
Above-mentioned second ink is transparent ink,
Above-mentioned second ink gun is by carrying out filling the regulation region on above-mentioned medium with fixed concentration
Full version prints, and utilizes above-mentioned transparent ink to form above-mentioned second ink layer.
Ink-jet printer the most according to claim 1, it is characterised in that
Above-mentioned second ink is not make the above-mentioned first black water-soluble ink after being bonded to above-mentioned medium.
Ink-jet printer the most according to claim 1, it is characterised in that
Above-mentioned medium is heated by above-mentioned heater in the position relative with above-mentioned first ink gun so that on
The temperature giving an account of matter is in the range of 35 DEG C～80 DEG C.
Ink-jet printer the most according to claim 1, it is characterised in that
Above-mentioned first ink gun and above-mentioned second ink gun are by carrying out while sweeping to master set in advance
Retouch direction to move while spraying the main scanning action of ink droplet, above-mentioned medium printed,
Above-mentioned moving direction is parallel to the direction of the sub scanning direction orthogonal with above-mentioned main scanning direction.
8. an ink-jet printer, is carried out the non-absorbent medium not absorbing ink with ink-jetting style
Printing, it is characterised in that possess:
First ink gun, it is upwards given an account of matter and sprays the ink droplet of the first ink；
Location change portion relatively, it passes through relative to above-mentioned first ink gun to moving direction set in advance
Carry above-mentioned medium, make above-mentioned medium each position on above-mentioned moving direction spray with above-mentioned first successively
Ink head is relative；
Second ink gun, it is on the above-mentioned moving direction of the above-mentioned medium relative to above-mentioned first ink gun
Being disposed in the position than above-mentioned first ink gun downstream, this second ink gun upwards gives an account of matter ejection
The ink droplet of second ink different from above-mentioned first ink；And
Heater, it is at least disposed in above-mentioned first ink gun across the relative position of above-mentioned medium,
Wherein, above-mentioned first ink is the ink of colloid solution, and above-mentioned second ink gun arranges as becoming
The more position on above-mentioned moving direction,
The thickness of layer that is first ink layer according to the ink formed by above-mentioned first ink gun, above-mentioned add
The temperature of hot device and make the most a certain item in the time that above-mentioned first ink layer is dried above-mentioned to set
Second ink gun position on above-mentioned moving direction.
9. an ink-jet printer, prints medium with ink-jetting style, the spy of this ink-jet printer
Levy and be, possess:
First ink gun, it is upwards given an account of matter and sprays the ink droplet of the first ink；
Location change portion relatively, it passes through relative to above-mentioned first ink gun to moving direction set in advance
Carry above-mentioned medium, make above-mentioned medium each position on above-mentioned moving direction spray with above-mentioned first successively
Ink head is relative；
Second ink gun, it is on the above-mentioned moving direction of the above-mentioned medium relative to above-mentioned first ink gun
Being disposed in the position than above-mentioned first ink gun downstream, this second ink gun upwards gives an account of matter ejection
The ink droplet of second ink different from above-mentioned first ink；And
Heater, it is at least disposed in above-mentioned first ink gun across the relative position of above-mentioned medium,
Wherein, above-mentioned second ink gun arranges as can change the position on above-mentioned moving direction,
The thickness of layer that is first ink layer according to the ink formed by above-mentioned first ink gun, above-mentioned add
The temperature of hot device and make the most a certain item in the time that above-mentioned first ink layer is dried above-mentioned to set
Second ink gun position on above-mentioned moving direction.
10. a printing process, prints the non-absorbent medium not absorbing ink with ink-jetting style
Brush, this printing process is characterised by, uses following structure:
First ink gun, it is upwards given an account of matter and sprays the ink droplet of the first ink；
Location change portion relatively, it passes through relative to above-mentioned first ink gun to moving direction set in advance
Carry above-mentioned medium, make above-mentioned medium each position on above-mentioned moving direction spray with above-mentioned first successively
Ink head is relative；
Second ink gun, it is on the above-mentioned moving direction of the above-mentioned medium relative to above-mentioned first ink gun
Being disposed in the position than above-mentioned first ink gun downstream, this second ink gun upwards gives an account of matter ejection
The ink droplet of second ink different from above-mentioned first ink；And
Heater, it is at least disposed in above-mentioned first ink gun across the relative position of above-mentioned medium,
Wherein, above-mentioned first ink is the latex ink of the colloid solution that polymeric material is uniformly dispersed.
11. 1 kinds of printing processes, print medium with ink-jetting style, and the feature of this printing process exists
In, use following structure:
First ink gun, it is upwards given an account of matter and sprays the ink droplet of the first ink；
Location change portion relatively, it passes through relative to above-mentioned first ink gun to moving direction set in advance
Carry above-mentioned medium, make above-mentioned medium each position on above-mentioned moving direction spray with above-mentioned first successively
Ink head is relative；
Second ink gun, it is on the above-mentioned moving direction of the above-mentioned medium relative to above-mentioned first ink gun
Being disposed in the position than above-mentioned first ink gun downstream, this second ink gun upwards gives an account of matter ejection
The ink droplet of second ink different from above-mentioned first ink；And
Heater, it is at least disposed in above-mentioned first ink gun across the relative position of above-mentioned medium,
Wherein, above-mentioned second ink gun arranges as can change the position on above-mentioned moving direction,
The thickness of layer that is first ink layer according to the ink formed by above-mentioned first ink gun, above-mentioned add
The temperature of hot device and make the most a certain item in the time that above-mentioned first ink layer is dried above-mentioned to set
Second ink gun position on above-mentioned moving direction.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013008584A JP6166048B2 (en) | 2013-01-21 | 2013-01-21 | Inkjet printer and printing method |
| JP2013-008584 | 2013-01-21 | ||
| PCT/JP2014/050455 WO2014112474A1 (en) | 2013-01-21 | 2014-01-14 | Inkjet printer and printing method |
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| CN104936785A CN104936785A (en) | 2015-09-23 |
| CN104936785B true CN104936785B (en) | 2016-09-14 |
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| JP6654054B2 (en) * | 2016-02-05 | 2020-02-26 | ローランドディー．ジー．株式会社 | Printing apparatus and printing method |
| EP3363644B1 (en) * | 2017-02-21 | 2023-05-03 | Seiko Epson Corporation | Recording method and recording apparatus |
| JP7298996B2 (en) * | 2017-07-14 | 2023-06-27 | 株式会社ミマキエンジニアリング | Printing device and printing method |
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| CN1652939A (en) * | 2003-04-18 | 2005-08-10 | 御牧高科技股份有限公司 | Ink jet printer |
| JP4631285B2 (en) * | 2004-01-30 | 2011-02-16 | コニカミノルタホールディングス株式会社 | Inkjet recording apparatus and inkjet recording method |
| US7459014B2 (en) * | 2005-01-14 | 2008-12-02 | Xerox Corporation | Radiation curable inks containing curable gelator additives |
| JP2009083324A (en) * | 2007-09-28 | 2009-04-23 | Fujifilm Corp | Inkjet recording method |
| JP4889059B2 (en) * | 2009-11-09 | 2012-02-29 | 株式会社ミマキエンジニアリング | Inkjet printer |
| KR101435552B1 (en) * | 2010-03-12 | 2014-08-29 | 가부시키가이샤 미마키 엔지니어링 | Imaging Device and Imaging Method |
| JP5702191B2 (en) * | 2010-10-22 | 2015-04-15 | 株式会社ミマキエンジニアリング | Inkjet recording apparatus and printing method |
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| CN104936785A (en) | 2015-09-23 |
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