CN106335278B - Ink-jet apparatus and ink jet method - Google Patents
Ink-jet apparatus and ink jet method Download PDFInfo
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- CN106335278B CN106335278B CN201610410603.8A CN201610410603A CN106335278B CN 106335278 B CN106335278 B CN 106335278B CN 201610410603 A CN201610410603 A CN 201610410603A CN 106335278 B CN106335278 B CN 106335278B
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Classifications
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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
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14016—Structure of bubble jet print heads
- B41J2/14088—Structure of heating means
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14016—Structure of bubble jet print heads
- B41J2/14153—Structures including a sensor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17596—Ink pumps, ink valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
- B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
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- Ink Jet (AREA)
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present invention provides a kind of ink-jet apparatus and ink jet method that ink temperature can be inhibited to change even if be supplied to the flow of ink of ink gun and change.Ink recycles in the 1st path.2nd path is after the branch part branch in the 1st path, back to the interflow position in the 1st path.The 1st pump conveying ink being inserted on the 1st path.Heater heats the ink recycled in the 1st path.The ink gun being inserted on the 2nd path will spray after the droplet of ink for flowing through the 2nd path.The 2nd pump conveying ink being inserted on the 2nd path.
Description
This application claims the priority based on Japanese patent application filed in 7 days July in 2015 the 2015-135857th.
The entire content of this Japanese application is incorporated by reference in this manual.
Technical field
The present invention relates to a kind of ink-jet apparatus and ink jet method of ink heated from ink gun injection.
Background technology
Having disclosed in following patent documents 1 will be after ink (thin-film material of liquid) droplet treatment from ink gun (nozzle head)
The ink-jet apparatus sprayed.In the ink-jet apparatus, ink is supplied to ink gun from the tank for storing ink, and
Extra ink is recovered to from ink gun in tank.In order to reduce the viscosity of ink, in tank and in the transport path of ink, to oil
Ink is heated.
Patent document 1：International Publication No. 2013/015093
If the emitted dose of ink gun changes, the flow of the ink recycled in transport path can also change.
It is changed as a result, by the flow of the ink of heater, therefore the temperature of ink can also change.If it is supplied to ink gun
The temperature of ink change, then the ink injection of ink gun becomes unstable.
Invention content
It can press down even if be supplied to the flow of ink of ink gun and change the purpose of the present invention is to provide a kind of
The ink-jet apparatus and ink jet method that ink temperature processed changes.
A viewpoint according to the present invention, provides a kind of ink-jet apparatus, has：
1st path, ink recycle in the 1st path；
2nd path, after the branch part branch in the 1st path, back to the interflow position in the 1st path；
1st pump, is inserted on the 1st path and conveys the ink；
Heater heats the ink recycled in the 1st path；
Ink gun is inserted on the 2nd path, and will be carried out after the droplet of ink for flowing through the 2nd path
Injection；And
2nd pump, is inserted on the 2nd path and conveys the ink.
Another viewpoint according to the present invention, provides a kind of ink jet method, to spray institute using ink-jet apparatus
The method for stating ink, the ink-jet apparatus have：
1st path, ink recycle in the 1st path；
2nd path, after the branch part branch in the 1st path, back to the interflow position in the 1st path；
Heater heats the ink recycled in the 1st path；And
Ink gun is inserted on the 2nd path, and will be sprayed after the droplet of ink,
In the ink jet method,
The ink is made to be recycled in the 1st path, and the ink is heated with the heater, makes institute
The part for stating the ink in the 1st path flows to the 2nd path, so as to which the ink is supplied to the ink gun,
It is sprayed after being fed into the droplet of ink of the ink gun from the ink gun.
If the flow for flowing through the ink in the 2nd path changes, flowing through the flow of the ink in the 1st path can also become
Change.At this point, variable quantity is less than variable quantity to flowing through the ink in the 2nd path to the ratio for flowing through the total flow of the ink in the 1st path
Total flow ratio.Since heater heats the ink for flowing through the 1st path, ink temperature can be inhibited to send out
It changes dynamic.
Description of the drawings
Fig. 1 is the skeleton diagram of the ink-jet apparatus based on embodiment.
Fig. 2 is the skeleton diagram of the ink-jet apparatus based on another embodiment.
Fig. 3 is the general of the part in the 1st path for more specifically representing the ink-jet apparatus based on embodiment illustrated in fig. 2
Sketch map.
Fig. 4 is the skeleton diagram of the ink-jet apparatus based on another embodiment.
Fig. 5 is the flow chart for the ink jet method for having used ink-jet apparatus shown in Fig. 4.
In figure：The 1st paths of 10-, 11- heaters, 12- the 1st are pumped, the 1st temperature sensors of 13-, 14- recuperation valves, 15- compensation
Tank, the 2nd paths of 20-, 21- ink guns, 22- the 2nd are pumped, 23- heat shields, the 2nd temperature sensors of 24-, 25- nozzle bores, and 26,27-
Pressure sensor, 28- the 3rd are pumped, 29- surge tanks, 31- branch parts, 32- interflow position, 34- surge tanks, 40- objective tables, 41-
Substrate, 50- control devices, 60- supplying tanks, 61- Room the 1st, 62- Room the 2nd, 63- Room the 3rd, 65- air valves, 66- level transducers.
Specific embodiment
In the following, the ink-jet apparatus based on embodiment is illustrated with reference to figure 1.
The skeleton diagram of ink-jet apparatus based on embodiment is shown in Fig. 1.Ink-jet apparatus tool based on embodiment
There is the 1st path 10 for recycling ink.Branch part 31 in the 1st path 10, the 2nd path 20 is from 10 branch of the 1st path.2nd
Collaborate at interflow position 32 with the 1st path 10 in path 20.
The pump of heater 11 and the 1st 12 is inserted on the 1st path 10.Such as electric heater can be used as heater 11.
Such as diaphragm pump can be used as the 1st pump 12.The pump of heater 11 and the 1st 12 is preferably inserted into from interflow position 32 to branch
On the path of position 31.Ink in 1st pump, 12 the 1st path 10 of conveying.By using 12 conveying ink of the 1st pump, make ink the 1st
It is recycled in path 10.Heater 11 heats the ink recycled in the 1st path 10.
1st temperature sensor 13 measures the temperature of ink recycled in the 1st path 10.Measurement result is input to control dress
Put 50.
Inserted with the pump of ink gun 21 and the 2nd 22 on the 2nd path 20.It is identical with the 1st pump 12, it can also as the 2nd pump 22
Use such as diaphragm pump.Ink in 2nd pump, 22 the 2nd path 20 of conveying.If making 22 work of the 2nd pump, followed in the 1st path 10
A part for the ink of ring flows into the 2nd path 20 in branch part 31.The ink for being flowed into the 2nd path 20 is flowing through the 2nd path
After 20, the ink interflow in 32 and the 1st path 10 of position is collaborated.
Ink gun 21 will spray after the droplet of ink that the 2nd path 20 flows into.The ink not sprayed is from ink-jet
First 21 outflow, and return to the 1st path 10 via the 2nd path 20.Substrate 41 is held in opposed with ink gun 21 by objective table 40
Position on.It is landed on substrate 41 by the drop for the ink for making to spray from ink gun 21, ink is made to be coated on substrate 41.
Then, the excellent effect of above-described embodiment is illustrated.It is represented with Q1 from branch part 31 to interflow
The flow of ink flowed through in 1st path 10 at position 32 represents the flow of ink flowed through in the 2nd path 20 with Q2.
The flow of ink flowed through in the 1st path 10 from interflow position 32 to branch part 31 is equal to Q1+Q2.From ink gun 21
In the case of spraying ink, the flow of the ink in the 2nd path 20 of 21 upstream side of ink gun and in 21 downstream side of ink gun
The 2nd path 20 in ink flow it is different.Here, the state for not spraying ink from ink gun 21 is illustrated.
The flow for flowing through the ink of heater 11 is Q1+Q2.If the flow Q2 for flowing through the ink of ink gun 21 changes
And as Q2+ Δ Q2, then the flow for flowing through the ink of heater 11 also changes Δ Q2.Variable quantity is to flowing through total stream of heater 11
The ratio (change rate) of amount is Δ Q2/ (Q1+Q2).
As comparative example, on 1 circulating path the structure inserted with ink gun illustrate.In the comparative example,
Inserted with ink gun and heater on 1 circulating path.If representing the flow for the ink for flowing through ink gun with Q2, flow through
The flow of the ink of heater is also equal with Q2.If the flow for flowing through the ink of ink gun changes Δ Q2, heater is flowed through
The flow of ink also changes Δ Q2.At this point, variable quantity is to the ratio (change rate) for flowing through the total flow of the ink of heater 11
ΔQ2/Q2。
Change rate Δ Q2/ (Q1+Q2) in embodiment is less than the change rate Δ Q2/Q2 in comparative example.Therefore, according to reality
The structure of example is applied, then compared with the structure of comparative example, the change rate for flowing through the ink flux of heater reduces.Therefore, it is possible to subtract
The amplitude of fluctuation of ink temperature when the small ink flux for flowing through ink gun 21 changes.Since the amplitude of fluctuation of temperature subtracts
It is small, therefore the stability of ink injection can be improved.
In order to reduce the change rate for the ink flux for flowing through heater 11, it is big that flow Q1 is preferably set as specific discharge Q2.It is logical
The action of the 12 and the 2nd pump 22 of the 1st pump of control is crossed, can realize the flow set.
Then, as another comparative example, to the ink tank inserted with large capacity on 1 circulating path and in ink tank
The structure of interior configuration having heaters illustrates.In the comparative example, pass through the ink temperature control in the ink tank by large capacity
It is made as constant, the amplitude of fluctuation of temperature when ink flux changes can be reduced.However, the temperature with ink increases,
The deterioration of ink can be accelerated.If ink deteriorates, ink must be replaced.If storing a large amount of ink with the state of heating,
A large amount of ink must be discarded when replacing ink.
In the above-described embodiments, due to without storing a large amount of ink, the energy when replacing ink with the state of heating
It is enough to reduce the amount for needing discarded ink.
Then, ink is made to begin to warm to ink injection from start-up operation the ink-jet apparatus based on embodiment
Sequence until action illustrates.
First, make the 1st pump 12 and heater 11 work, so as to which ink be made to be recycled in the 1st path 10, and to ink into
Row heating.At this point, the 2nd pump 22 is in halted state.Therefore, ink may not flow into the 2nd path 20.If flow through the 1st path 10
The temperature of ink reach the 1st target temperature, then make 22 work of the 2nd pump, so as to which ink be made to be flowed into the 2nd path 20.Later, make
Ink gun 21 works, so as to carry out the injection of ink.
In said sequence, the low-temperature printing ink before heating may not flow into the 2nd path 20.Due to low-temperature printing ink viscosity compared with
Height, therefore, if low-temperature printing ink is flowed into the 2nd path 20, the pressure loss can become larger, and the flow of ink can reduce.Therefore, it is flowing
During crossing the 2nd path 20, the heat dissipation capacity of ink can increase.As a result, the ink temperature in ink gun 21 reaches target temperature
Until need longer time.It in embodiment, can be from since the ink after heating is flowed into the 2nd path 20
The flow of ink can be set as larger at the very start.Reaching target temperature therefore, it is possible to shortening the ink in ink gun 21 is
Time only.
Then, with reference to figure 2 and Fig. 3, the ink-jet apparatus of another embodiment is illustrated.Hereinafter, pair with Fig. 1 shown in
The different point of embodiment illustrate, and to general incomplete structure explanation.
The skeleton diagram of ink-jet apparatus based on another embodiment is shown in Fig. 2.2nd temperature sensor 24 measures ink-jet
The temperature of ink in first 21.The measurement result of 2nd temperature sensor 24 is input to control device 50.
The pressure of the ink in the 2nd path 20 of input side that the measurement of pressure sensor 26 is connected to ink gun 21.Pressure
The pressure of the ink in the 2nd path 20 of outlet side that the measurement of sensor 27 is connected to ink gun 21.Pressure sensor 26,27
Measurement result is input to control device 50.Control device 50 can be calculated according to the measurement result of pressure sensor 26,27
The pressure of ink in ink gun 21.
The ink for being fed to the 1st path 10 is stored in compensating tank 15.Inserted with recuperation valve 14 on the 1st path 10.Oil
Ink is fed to the 1st path 10 from compensating tank 15 via recuperation valve 14.Recuperation valve 14 can be such that ink is fed to from compensating tank 15
It is switched between the supply state in the 1st path 10 and the non-supply state for not feeding ink.Control device 50 controls heater
11st, the 1st pump 12 and recuperation valve 14.
Fig. 3 is the outline of the part in the 1st path 10 for more specifically representing the ink-jet apparatus based on the present embodiment
Figure.Inserted with supplying tank 60 on the 1st path 10.The 1st Room 61, the 2nd Room 62 and the 3rd Room 63 are provided in supplying tank 60.From the 1st
The ink come is flowed through in path 10 after being flowed into supplying tank 60, is flowed into the 1st Room 61 from the lower end of the 1st Room 61.1st
Configuration having heaters 11 in room 61.Ink is heated when flowing through upward from below in the 1st Room 61 by heater 11.
If the liquid level for being flowed into the ink of the 1st Room 61 rises more than certain altitude, ink is overflowed from the 1st Room 61 and is flowed
Enter to the 2nd Room 62.The end of the upstream side in the 2nd path 20 is connected in the lower end of the 2nd Room 62.2nd Room 62 and the 2nd path 20
Connecting portion is equivalent to branch part 31 (Fig. 2).Ink in 2nd Room 62 flows into the 2nd path 20 and is supplied to ink gun 21.From
The 2nd path 20 until the end of upstream side to ink gun 21 is coated by heat shield 23.In the face downward of ink gun 21
On be provided with multiple nozzle bores 25.Ink after each nozzle bore 25 injection droplet treatment.
If the liquid level of the ink in the 2nd Room 62 is more than certain altitude, ink overflows from the 2nd Room 62 and is flowed into Room the 3rd
63.Supplying tank 60 is returned to from the ink that the lower end of the 3rd Room 63 is flowed out by the 1st path 10.1st Room 61, the 2nd Room 62 and
3 Room 63 form the part in the 1st path 10.
The end in the downstream side in the 2nd path 20 is connected to the side of the 3rd Room 63.The ink come is flowed through from the 2nd path 20
It is flowed into the 3rd Room 63.The connecting portion of 2nd path 20 and the 3rd Room 63 is equivalent to interflow position 32 (Fig. 2).
Inserted with surge tank 34 on the 2nd path 20 between the pump of ink gun 21 and the 2nd 22.Surge tank 34 inhibits by the 2nd
The pulsation for the ink flux that pump 22 generates is transmitted to ink gun 21.
Air valve 65 is installed above supplying tank 60.In the state of air valve 65 is opened, atmospheric pressure is applied to Room the 1st
61st, the liquid level of the 2nd Room 62 and the ink in the 3rd Room 63.In the present embodiment, during ink-jet apparatus works, air valve
65 are in opening.
The 12 and the 2nd pump 22 of 1st pump be controlled so as to by the 1st path 10 and be flowed into the flow-rate ratio of the ink of supplying tank 60 from
The flow of ink that 2nd Room 62 is supplied to ink gun 21 is more.Therefore, ink overflows always from the 2nd Room 62 to the 3rd Room 63.As a result,
The liquid level of ink in 2nd Room 62 remains constant.The liquid level of 3rd Room 63 is low in the liquid level than the 2nd Room 62
In the range of changed up and down according to the amount of ink.
Supplying tank 60 is provided with level transducer 66.Level transducer 66 measures the liquid level of the ink in the 3rd Room 63.
As level transducer 66, can use such as ultrasonic type level transducer, floating type level transducer.Level transducer
66 measurement result is input to control device 50 (Fig. 2).
Supplying tank 60 is additionally provided with the 1st temperature sensor 13.1st temperature sensor 13 measures the oil in such as the 2nd Room 62
The temperature of ink.
The height depending on the liquid level in 25 and the 2nd Room 62 of nozzle bore is applied in the position of the nozzle bore 25 of ink gun 21
The head pressure of difference.By adjusting the difference of height, the head pressure for the position for being applied to nozzle bore 25 can be adjusted.If flow through
The total amount of the ink in 1 path 10 and the 2nd path 20 changes, then the liquid level of the ink in the 3rd Room 63 can change,
But the liquid level of the ink in the 2nd Room 62 is still kept constant.Therefore, even if flowing through the ink in the 1st path 10 and the 2nd path 20
Total amount increase or decrease, also the head pressure on the position of the nozzle bore 25 of ink gun 21 can be maintained constant.
Then, with reference to figure 4 and Fig. 5, another embodiment is illustrated.Hereinafter, pair with Fig. 2 and embodiment shown in Fig. 3
Different points illustrate, and to general incomplete structure explanation.
The skeleton diagram of ink-jet apparatus based on another embodiment is shown in Fig. 4.In Fig. 2 and embodiment shown in Fig. 3
In, inserted with the 2nd pump 22 on than ink gun 21 farther downstream the 2nd path 20 of side.In the embodiment shown in fig. 4, in addition to
Other than 2nd pump 22, inserted with the 3rd pump 28 on the 2nd path 20 than 21 upstream side of ink gun.Also, the 3rd pump 28 with
Inserted with surge tank 29 on the 2nd path 20 between ink gun 21.
It is curved on the position for the nozzle bore 25 that ink gun 21 can be adjusted by the output of the 22 and the 3rd pump 28 of the 2nd pump of control
Levels pressure.
Show to have used the flow chart of the ink jet method of the ink-jet apparatus of Fig. 4 in Fig. 5.In step sl, it controls
Device 50 processed makes 12 work of the 1st pump, so as to which ink be made to be recycled in the 1st path 10.In step s 2, control device 50 judgement be
It is no to require supplementation with ink.It here, can be according in the 3rd Room 63 measured by the level transducer 66 being installed in supplying tank 60
The liquid level of ink come determine a need for supplement ink.If liquid level is less than preset a reference value, judge to need
Supplement ink.If on the basis of liquid level more than value, judgement does not need to supplement ink.
In the case where being judged to requiring supplementation with ink, in step s3, ink is supplemented to the 1st path 10.Specifically,
Recuperation valve 14 is switched to supply state by control device 50.Ink is fed to the 1st path 10 from compensating tank 15 as a result,.If Room the 3rd
The liquid level of ink in 63 becomes more than a reference value, then stops the supplement of ink.Specifically, control device 50 is by recuperation valve 14
Non- supply state is switched to from supply state.
If it is judged to not needing to supplement ink in step s 2 or ink supplement finishes in step s3, in step
In S4, start to warm up the ink in the 1st path 10.Specifically, control device 50 makes heater 11 work.
In step s 5, judge whether the temperature of the ink in the 1st path 10 reaches the 1st target temperature.Control device 50
Can the judgement be carried out according to the measurement result of the 1st temperature sensor 13.If the 1st target temperature has not yet been reached in the temperature of ink
Degree then makes ink continue to recycle until the 1st target temperature is reached in the 1st path 10.
If the temperature of ink recycled in the 1st path 10 reaches the 1st target temperature, in step s 6, open ink
Begin to flow into the 2nd path 20.Specifically, control device 50 makes 28 work of the 22 and the 3rd pump of the 2nd pump.Start as a result, to ink gun 21
Supply ink.At this point, the 22 and the 3rd pump 28 of the 2nd pump is controlled so as to work with preset output.
When starting to supply ink to the 2nd path 20, the temperature ratio of 21 grade of pipeline and ink gun in the 2nd path 20 is formed
1st target temperature is low.Therefore, the temperature of the ink in the 2nd path 20 is flowed into drop as ink flows in the 2nd path 20
It is low.At this point, the pipeline and 21 grade of ink gun in the 2nd path 20 are heated by ink.
In the step s 7, judge whether the temperature of the ink in ink gun 21 reaches the 2nd target temperature.Control device 50
The judgement is carried out according to the measurement result of the 2nd temperature sensor 24.2nd target temperature is set to and the 1st target temperature almost phase
Together.If the 2nd target temperature has not yet been reached in the temperature of the ink in ink gun 21, ink continuation is made to be flowed through in the 2nd path 20
Until the temperature of ink reaches the 2nd target temperature.
If the temperature of the ink in ink gun 21 reaches the 2nd target temperature, in step s 8, start to make in ink gun 21
Ink pressure rise control.For example, control device 50 reduces the output of the 2nd 22 (Fig. 2, Fig. 3) of pump, so as to make spray
The pressure of ink in black head 21 rises.At this point, flowing through the flow of the ink in the 2nd path 20 can reduce.2nd pump 22 is controlled so as to
Its output is reduced to preset output.
In addition to this, the output of both the 22 and the 3rd pumps 28 of the 2nd pump can also be made reduce.If at this point, pump 22 by the 2nd
Output reduction amount be set as than the 3rd pump 28 output reduction amount bigger, then the pressure of the ink in ink gun 21 will on
It rises.In this case, flowing through the flow of the ink in the 2nd path 20 can also reduce.
In step s 9, judge whether the pressure of the ink in ink gun 21 rises to goal pressure.Control device 50
The judgement is carried out according to the measurement result of pressure sensor 26,27 (Fig. 2).If the pressure of the ink in ink gun 21 not yet rises
To goal pressure, then the output of the 22 and the 3rd pump 28 of the 2nd pump is controlled until reaching goal pressure.For example, control device 50 makes output
It is increased or decreased with preset step-length.
If the pressure of the ink in ink gun 21 reaches goal pressure, in step slo, according to pressure sensor 26,
27 measurement result carries out feedback control to the output of the 22 and the 3rd pump 28 of the 2nd pump, so that the pressure of the ink in ink gun 21 is fallen
In permissible range.Ink gun 21 is made to work while feedback control is carried out to the output of the 22 and the 3rd pump 28 of the 2nd pump.As a result,
The drop of ink is sprayed from ink gun 21.
Then, the excellent effect of Fig. 4 and embodiment shown in fig. 5 is illustrated.In the present embodiment, the 2nd is flowed into
The ink in path 20 is heated to the 1st target temperature (step S5).By heating, the viscosity of ink, therefore from the beginning
The flow for the ink for flowing through the 2nd path 20 can be set as higher.Therefore, with Fig. 1 embodiment it is identical, spray can be shortened
The temperature of ink in black head 21 reach the 2nd target temperature until time.
In addition, in Fig. 4 and embodiment shown in fig. 5, at the time of the 2nd path 20 are begun to flow to from ink (step S6)
During rising (step S8) to the pressure for making the ink in ink gun 21, the pressure ratio final goal of the ink in ink gun 21
Pressure is low.Therefore, during until ink gun 21 starts to spray ink, it can prevent ink from being leaked from ink gun 21.
During from step S6 to step S8, as described above, the 2nd pump 22 output or the 2nd pump the 22 and the 3rd pump 28 this two
The output of person is set to the output higher of (step S11) during than ink injection action.Therefore, from step S6 to step S8's
Flow when period flows through the flow-rate ratio ink injection action of the ink in the 2nd path 20 is more.By the way that the 2nd path 20 will be flowed through
The flow of ink is set as more, can shorten the ink in ink gun 21 temperature reach the 2nd target temperature until time.
Moreover, in Fig. 4 and embodiment shown in fig. 5, the pressure of the ink in ink gun 21 reach goal pressure it
Afterwards, feedback control is carried out so that the pressure in ink gun 21 is fallen in permissible range.If the pressure of the ink in ink gun 21
And start the feedback control in a state that the difference of goal pressure is larger, then feedback control can become unstable sometimes.In above-mentioned reality
It applies in example, the unstable of feedback control can be avoided.
More than, according to embodiment, the present invention is described, but the present invention is not limited to this.For example, it can carry out each
Kind change, improvement, combination etc., this is obvious to those skilled in the art.
Claims (9)
1. a kind of ink-jet apparatus, which is characterized in that have：
1st path, ink recycle in the 1st path；
2nd path, after the branch part branch in the 1st path, back to the interflow position in the 1st path；
1st pump, is inserted on the 1st path and conveys the ink；
Heater heats the ink recycled in the 1st path；
Ink gun is inserted on the 2nd path, and will be sprayed after the droplet of ink for flowing through the 2nd path；
And
2nd pump, is inserted on the 2nd path and conveys the ink.
2. ink-jet apparatus according to claim 1, which is characterized in that also have：
Compensating tank, for storing the ink for being fed to the 1st path；
Recuperation valve is feeding the supply state of the ink from the compensating tank to the 1st path and is not feeding the ink
Non- supply state between switch over；
1st temperature sensor measures the temperature of the ink recycled in the 1st path；And
Control device controls the recuperation valve, the heater, the 1st pump and the 2nd pump,
The control device carries out control as follows：
The recuperation valve is set as the supply state and makes the 1st pump work, so as to make the ink in the 1st path
Middle cycle, and the heater is controlled to heat the ink,
The recuperation valve is switched to the non-supply state, later, is sentenced according to the measurement result of the 1st temperature sensor
It is scheduled on whether the temperature of the ink recycled in the 1st path reaches the 1st target temperature,
If it is determined that the temperature for the ink reaches the 1st target temperature, then make the 2nd pump work, so as to start to institute
It states the 2nd path and supplies the ink.
3. ink-jet apparatus according to claim 2, which is characterized in that
The control device carries out control as follows：
The action of the 1st pump and the 2nd pump is controlled, so that in described the from the branch part to the interflow position
The flow that the flow-rate ratio of the ink flowed through in 1 path flows through the ink in the 2nd path is big.
4. ink-jet apparatus according to claim 3, which is characterized in that
2nd pump is inserted in than on the ink gun farther downstream the 2nd path of side,
The ink-jet apparatus also has：
3rd pump, is inserted on the 2nd path than the ink gun upstream side；And
2nd temperature sensor measures the temperature for the ink for flowing through the 2nd path,
The control device carries out control as follows：
Whether judge to flow through the temperature of the ink in the 2nd path according to the measurement result of the 2nd temperature sensor
Reach the 2nd target temperature,
If it is determined that the temperature of the ink to flow through the 2nd path reaches the 2nd target temperature, then the described 2nd is controlled
Pump and the 3rd pump, so that the pressure of the ink in the ink gun rises.
5. ink-jet apparatus according to claim 4, which is characterized in that
The ink-jet apparatus also has pressure sensor, which measures the ink in the ink gun
Pressure,
The control device carries out control as follows：
Control the 2nd pump and the described 3rd pump so that the pressure of the ink in the ink gun rises after, according to institute
The measurement result of pressure sensor is stated to judge whether the pressure of the ink in the ink gun rises to goal pressure,
If it is determined that the pressure for the ink in the ink gun reaches the goal pressure, then according to the pressure sensor
Measurement result, to the described 2nd pump and it is described 3rd pump carry out feedback control so that the pressure of the ink in the ink gun
Power is fallen in permissible range.
6. a kind of ink jet method is the method that the ink is sprayed using ink-jet apparatus, the ink injection dress
Putting has：
1st path, ink recycle in the 1st path；
2nd path, after the branch part branch in the 1st path, back to the interflow position in the 1st path；
Heater heats the ink recycled in the 1st path；And
Ink gun is inserted on the 2nd path, and will be sprayed after the droplet of ink,
The ink jet method is characterized in that,
The ink is made to be recycled in the 1st path, and the ink is heated with the heater, makes described
A part for the ink in 1 path flows to the 2nd path, so as to which the ink is supplied to the ink gun,
It is sprayed after being fed into the droplet of ink of the ink gun from the ink gun.
7. ink jet method according to claim 6, which is characterized in that
Before the ink is supplied to the ink gun,
The ink is made not flowed through in the 2nd path, but the ink is made to be recycled, and use in the 1st path
The heater heats the ink,
If the temperature of the ink recycled in the 1st path reaches the 1st target temperature, make in the 1st path
A part for the ink of cycle flows to the 2nd path.
8. ink jet method according to claim 7, which is characterized in that
Make after the part for the ink recycled in the 1st path begins to flow to the 2nd path, if flowing through described
The temperature of the ink in the 2nd path reaches the 2nd target temperature, then the pressure of the ink in the ink gun is made to increase.
9. ink jet method according to claim 8, which is characterized in that
After the pressure for making the ink in the ink gun rises, the flow in the 2nd path is controlled so that the spray
The pressure of the ink in black head is fallen in permissible range, and will be sprayed after the droplet of ink from the ink gun
It penetrates.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-135857 | 2015-07-07 | ||
| JP2015135857A JP6479596B2 (en) | 2015-07-07 | 2015-07-07 | Ink ejection apparatus and ink ejection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106335278A CN106335278A (en) | 2017-01-18 |
| CN106335278B true CN106335278B (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610410603.8A Active CN106335278B (en) | 2015-07-07 | 2016-06-12 | Ink-jet apparatus and ink jet method |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6479596B2 (en) |
| KR (1) | KR101929094B1 (en) |
| CN (1) | CN106335278B (en) |
| TW (1) | TWI623438B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018194642A1 (en) | 2017-04-21 | 2018-10-25 | Hewlett-Packard Development Company, L.P. | Recirculation of a fluid in a printer |
| KR102030563B1 (en) * | 2017-04-21 | 2019-10-10 | (주)대명티에스 | Sealer application apparatus for vehicle body |
| JP6980339B2 (en) * | 2017-09-05 | 2021-12-15 | 住友重機械工業株式会社 | Liquid material discharge device and liquid material discharge method |
| JP6941365B2 (en) * | 2017-12-19 | 2021-09-29 | 武蔵エンジニアリング株式会社 | Droplet ejection device and droplet ejection method |
| JP7013340B2 (en) * | 2018-07-02 | 2022-01-31 | トリニティ工業株式会社 | Paint supply system |
| EP4023345A4 (en) * | 2019-08-30 | 2023-08-16 | Kyocera Corporation | Circulation device |
| US11697289B2 (en) | 2020-12-01 | 2023-07-11 | Toshiba Tec Kabushiki Kaisha | Liquid circulation device and liquid discharge apparatus |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20170006255A (en) | 2017-01-17 |
| KR101929094B1 (en) | 2018-12-13 |
| CN106335278A (en) | 2017-01-18 |
| TW201702084A (en) | 2017-01-16 |
| TWI623438B (en) | 2018-05-11 |
| JP2017018845A (en) | 2017-01-26 |
| JP6479596B2 (en) | 2019-03-06 |
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