CN101314284B - Liquid-droplet ejecting apparatus - Google Patents

Liquid-droplet ejecting apparatus Download PDF

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Publication number
CN101314284B
CN101314284B CN2008101095588A CN200810109558A CN101314284B CN 101314284 B CN101314284 B CN 101314284B CN 2008101095588 A CN2008101095588 A CN 2008101095588A CN 200810109558 A CN200810109558 A CN 200810109558A CN 101314284 B CN101314284 B CN 101314284B
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suction
liquid
suction channel
pressure
internal pressure
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CN101314284A (en
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梅田隆一郎
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Brother Industries Ltd
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Brother Industries Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Abstract

A liquid-droplet ejecting apparatus includes: a liquid ejecting head having an ejection opening; a liquid supply passage through which the liquid is supplied to the liquid ejecting head; a first suction passage normally in communication with the liquid supply passage; a sucking device for sucking the gas in the liquid supply passage via the suction passage; a gas-permeable film disposed at a communication portion at which the liquid supply passage and the suction passage communicate with each other, the gas-permeable film allowing the gas to pass therethrough but not allowing the liquid to pass therethrough; a gas container, arranged at the part between the sucking device and the liquid supply passage of the first suction passage and containing gas to accumulate the suction pressure; and a check valve, arranged at the part between the sucking device and the gas container of the first sucking channel, and allowing the gas supplying on the first direction from the liquid supply passage to the sucking device, but not allowing the gas to flow on the opposite second direction. Therefore, the liquid supply device keeps in the gas-liquid separating state after stopping the operation of the sucking device.

Description

Liquid-droplet ejecting apparatus
The cross reference of related application
The application requires all to be incorporated herein by reference in this disclosure with these Japanese patent applications respectively on May 31st, 2007 and the Japanese patent application No.2007-145462 of submission on September 27th, 2007 and the priority of No.2007-252387.
Technical field
The present invention relates to liquid-droplet ejecting apparatus, and be particularly related to the liquid-droplet ejecting apparatus that comprises ventilative film.
Background technology
Some liquid-droplet ejecting apparatus that comprise the jet head liquid that is used for liquid droplets for example ink-jet printer also comprise liquid supply passage, liquid supplies to jet head liquid by this liquid supply passage, as disclosed among the JP-A-2005-288770 (especially referring to Fig. 2).Disclosed equipment comprises balladeur train, is installed in the record head on the balladeur train, secondary container, print cartridge and suction pump in this announcement.The print cartridge storage supplies to the China ink of record head via secondary container and ink-feed channel.
Secondary container has ventilative film in this equipment.Ventilative film does not allow China ink by ventilative film, but optionally allows gas or air by ventilative film.By making suction pump pass through ventilative film intake-gas or air from the inside of secondary container, make secondary container decompression, perhaps reduce the internal pressure of secondary container, thus China ink is incorporated into the inside of secondary container from print cartridge.In addition, after device shutdown, from China ink, flow out, carry out from secondary internal tank intake-gas or air in order to make gas or bubble.Therefore, the gas or the air that are included in the China ink that is stored in the secondary container separate with China ink, perhaps the China ink in the secondary container are carried out " gas-liquid separation ", to forbid in gas or the air influent injector head.
Yet, in this equipment, in case after when execution is introduced China ink in the secondary container, just carry out from secondary container intake-gas or air up to device shutdown.Therefore, after China ink being introduced in the secondary container, when record head operation during with document image, gas or bubble continue to occur in China ink and gather in secondary container, thereby thereby have influenced the decompression state of secondary container unfriendly and forbidden gas or bubble separates from China ink.The insufficient undesirable gas or air of may causing of the gas-liquid separation in secondary container that causes like this followed in the inking influent injector head.
Summary of the invention
In view of said circumstances, developed the present invention, so the purpose of this invention is to provide liquid-droplet ejecting apparatus, this liquid-droplet ejecting apparatus comprises jet head liquid and liquid supply passage, liquid supplies to jet head liquid by this liquid supply passage, and this liquid-droplet ejecting apparatus can be easy to liquid supply passage remain on gas or air with enough degree under the state of fluid separation applications.
In order to obtain top purpose, the present invention provides liquid-droplet ejecting apparatus with following modes.
(1) a kind of liquid-droplet ejecting apparatus comprises:
Have the jet head liquid that sprays opening, spray the opening liquid droplets from this;
Liquid supply passage, liquid supplies to jet head liquid by this liquid supply passage;
First suction channel that common maintenance is communicated with liquid supply passage;
Aspirator via the gas in this first suction channel pumping liquid feed path;
Be arranged on the ventilative film of interconnecting part office, the liquid supply passage and first suction channel communicate with each other in this interconnecting part office, and this ventilative film allows gas by this ventilative film, but does not allow liquid to pass through this ventilative film;
Gas container, this gas container are arranged in the part between aspirator and liquid supply passage of first suction channel, and hold gas to gather the swabbing pressure that is used for intake-gas; With
Check-valves, this check-valves is arranged in the part between aspirator and gas container of first suction channel, and allow gas on first direction, to flow to aspirator, but do not allow gas on the second direction opposite, to flow with first direction from liquid supply passage.
According to this liquid-droplet ejecting apparatus, not only in the operation aspirator, and after the operation that stops aspirator, liquid supply passage can be remained under the state of realizing gas-liquid separation.Therefore, carry out effectively by means of the aspirator intake-gas.In addition, for example write down operating period at the drop spraying, even when the operation of aspirator stops or stopping, the fluid separation applications that gas also can be from liquid supply passage.Therefore, start after the drop spraying after the suction operation of aspirator, even when gas is introduced in the liquid supply passage, gas also can be removed to keep drop and spray for example high accuracy of recording quality.That is, when gas and liquid were separated from one another in liquid supply passage, the aspirator operation was with from the liquid supply passage intake-gas.After the operation of aspirator stopped, the check-valves operation remained under the state that has applied enough swabbing pressures with the inside with first suction channel.When after this starting the drop spraying, from the injection opening liquid droplets of jet head liquid, and the certain liq amount moves in the liquid supply passage to replenish the liquid of using up.This may cause gas is incorporated in the liquid supply passage.Yet, owing to first suction channel remains under the state that has applied enough swabbing pressures, so the gas from liquid of introducing is separated thus.Like this, even liquid-droplet ejecting apparatus of the present invention also can remain on liquid supply passage under the state of realizing gas-liquid separation after the operation of aspirator stops.
(2) according to the equipment of pattern (1), wherein said check-valves comprises the valve element, poor according between pressure of doing from the aspirator side to be used for and the pressure doing to be used for from the liquid supply passage side, this valve element can and be closed between the closed position of described first suction channel and move at the open position of opening described first suction channel.
By adopting this valve element, can form check-valves simply.
(3) according to the equipment of pattern (1) or pattern (2), also comprise:
Spray the opening capping apparatus, this injection opening capping apparatus comprises block, this block can be with respect to described jet head liquid at the tight described jet head liquid of contact so that the covering position of the described injection opening of airtight covering and open between the uncovering position of described injection opening and move;
Second suction channel with two opposite ends, an end in these two opposite ends is communicated with the inner space of block, and described aspirator another end aspiration gas from these two opposite ends;
Switching device shifter, this switching device shifter optionally are connected aspirator and first suction channel with a suction channel in second suction channel; With
The suction controller, this suction controller control is sprayed opening capping apparatus, aspirator and switching device shifter and is sprayed the opening suction process so that carry out, spray in the opening suction process at this, aspirate liquid the described jet head liquid from described injection opening and via this second suction channel, and should aspirate controller control aspirator and switching device shifter so that carry out the passage suction process, in this passage suction process, from described liquid supply passage via the described first suction channel intake-gas.
According to the liquid-droplet ejecting apparatus of pattern (3), spray opening suction process and passage suction process by using single aspirator optionally to carry out.
(4) according to the equipment of pattern (3), also comprise apparatus for detecting pressure, whether the internal pressure that this apparatus for detecting pressure is surveyed described first suction channel is lower than first predetermined threshold, and the result that wherein said suction controller is surveyed with this apparatus for detecting pressure serves as that at least one device in described injection opening capping apparatus, described aspirator and the described switching device shifter is controlled on the basis.
Liquid-droplet ejecting apparatus according to pattern (4), the liquid supply passage that the internal pressure of first suction channel is lower than first predetermined threshold based on whether has applied enough swabbing pressures, carry out to spray opening suction process or passage suction process, perhaps the suction process of the processing of carrying out from spray opening suction process and passage suction process switched to another suction process in these two suction process.Therefore, can control to prevent before abundant intake-gas, stopping passage suction process or startup injection opening suction process from liquid supply passage.
(5) according to the equipment of pattern (4),
Wherein said first suction channel has pipe, and at least a portion of this pipe is formed by elastomeric material,
Wherein said apparatus for detecting pressure comprises being detected member and surveying this and be detected the sensor whether member is positioned at predetermined detecting location place of this part setting of contiguous this pipe,
And wherein when the internal pressure of this pipe was high relatively, this tube swelling was to promote to be detected member towards this detecting location.
According to the liquid-droplet ejecting apparatus of pattern (5), whether the sensor detection is detected member is positioned at the detecting location place.Based on the result of this detection, whether the internal pressure of detectable first suction channel is lower than first predetermined threshold.
(6) according to the equipment of pattern (4), also comprise to pattern (5):
Liquid container, liquid supplies to described liquid supply passage from this liquid container; With
The surplus determining section, when the internal pressure that detects described first suction channel when described apparatus for detecting pressure is not less than described first predetermined threshold, this surplus determining section makes described suction controller carry out described passage suction process, after described suction controller is carried out described passage suction process, when the internal pressure that detects described first suction channel once more when described apparatus for detecting pressure was not less than described first predetermined threshold, the surplus determining section determined that liquid container is empty.
When the internal pressure of first suction channel is equal to or higher than first predetermined threshold, can suppose that liquid in the liquid container exhausts and therefore the gas from liquid container flow in the liquid supply passage, suppose perhaps that liquid in the liquid container does not also exhaust but in the only interim influent feed path of gas.Therefore, when having carried out the passage suction process and after this apparatus for detecting pressure internal pressure that detects first suction channel still is equal to or higher than first predetermined threshold, the liquid that very possible is in the liquid container has exhausted.Therefore, according to the liquid-droplet ejecting apparatus of pattern (6), can determine whether the liquid in the liquid container exhausts with high accuracy.
(7) according to the equipment of pattern (6), comprise a plurality of described liquid containers and a plurality of surplus sniffer, described a plurality of surplus sniffer is set on each liquid container, so that whether the amount of liquid of surveying in each liquid container is lower than near zero threshold value, and when wherein the internal pressure that detects described first suction channel when described apparatus for detecting pressure is not less than described first predetermined threshold, described surplus determining section makes described suction controller carry out described passage suction process, when the internal pressure that still detects described first suction channel when described apparatus for detecting pressure after described suction controller has been carried out described passage suction process is not less than described first predetermined threshold, and a corresponding surplus detection of the liquid container with in the described liquid container in the described surplus sniffer is when remaining amount of liquid is lower than this threshold value in a described liquid container, and described surplus determining section determines that a described liquid container is empty.
A plurality of liquid containers wherein are provided, the internal pressure that detects based on first suction channel, at least one liquid container in the detectable whether liquid container is empty or all liquid containers are not empty, but is that can not to discern which liquid container be empty on the basis with the internal pressure that detects only.Yet, liquid-droplet ejecting apparatus according to pattern (7), for whether the amount of liquid of surveying in each liquid container is lower than threshold value, for each liquid container provides the surplus sniffer, and when the amount of liquid of a liquid container of the correspondence of any one surplus detection in liquid container in the surplus sniffer was lower than threshold value, a described liquid container very may be empty and therefore be determined was empty.Like this, according to pattern (7),, also can determine which liquid container becomes empty with high accuracy even providing or using under the situation of a plurality of liquid containers.
(8) according to any equipment in pattern (4)-(7), wherein said apparatus for detecting pressure comprises the specific gas flow rate detector of surveying the specific gas flow rate in described first suction channel, when described aspirator during via the described first suction channel intake-gas, the specific gas flow rate that described apparatus for detecting pressure detects with this specific gas flow rate detector is the internal pressure that described first suction channel is surveyed on the basis.
Can survey the internal pressure of first suction channel corresponding with specific gas flow rate in first suction channel by the probe gas flow rate.
(9) according to the equipment of pattern (8), wherein said specific gas flow rate detector comprises the rotation amount probe portion of the rotation amount of impeller that rotates according to the gas flow in described first suction channel and the time per unit of surveying this impeller.
(10) according to the equipment of pattern (8) or pattern (9), wherein said suction controller continues described passage suction process, up to described specific gas flow rate detector detect specific gas flow rate be lower than be used for the described first predetermined threshold corresponding threshold of described internal pressure till.
By continuing intake-gas via first suction channel till specific gas flow rate is lower than the first predetermined threshold corresponding threshold with the internal pressure that is used for first suction channel, can be till the internal pressure of first suction channel be lower than described predetermined threshold via the first suction channel intake-gas.
(11) according to any equipment in pattern (8)-(10), also comprise:
Liquid container, liquid supplies to described liquid supply passage from this liquid container; With
Determine to remain in the surplus determining section of the amount of liquid in this liquid container,
Although and wherein continue via the described first suction channel intake-gas when but the specific gas flow rate as described in described first suction channel that detects of specific gas flow rate detector did not reduce, this surplus determining section determined that liquid container is empty when described aspirator.
According to the liquid-droplet ejecting apparatus of pattern (11), not being reduced to the basis with specific gas flow rate, to detect liquid container be empty.Therefore, it is empty just can detecting liquid container with simple structure.
(12) according to any equipment in pattern (4)-(11), wherein said suction controller comprises that spraying the opening suction allows part, when the internal pressure that detects described first suction channel when described apparatus for detecting pressure was lower than described first predetermined threshold, this sprayed opening suction and allows part to allow to carry out described injection opening suction process.
According to the liquid-droplet ejecting apparatus of pattern (12), when the internal pressure of first suction channel is lower than first predetermined threshold, allow to carry out injection opening suction process.Therefore, under the state of the abundant intake-gas of liquid supply passage, starting injection opening suction process.Therefore, during spraying the opening suction process, prevent reliably that also the gas from liquid feed path from flowing to the injection opening.
(13) according to the equipment of pattern (12), when wherein the internal pressure that detects described first suction channel when described apparatus for detecting pressure was not less than described first predetermined threshold, described suction controller control was to carry out described passage suction process before described injection opening suction process.
(14) according to any equipment in pattern (4)-(13), wherein said first suction channel comprises pressure restrictor, when the internal pressure in described first suction channel was reduced to than low second predetermined threshold of described first predetermined threshold, this pressure restrictor was closed described first suction channel.
According to the liquid-droplet ejecting apparatus of pattern (14), when the internal pressure of first suction channel excessively reduced, pressure restrictor was closed first suction channel.Therefore, prevented the over load that on ventilative film, applies that the excessive suction of gas caused owing to via first suction channel.
(15) according to the equipment of pattern (14), wherein said pressure restrictor comprises the part of described first suction channel, when the internal pressure of described first suction channel is reduced to described second predetermined threshold, flatten in the internal pressure of this part of described first suction channel and this part of described first suction channel of the official post between the external pressure, so that close described first suction channel.
(16) according to any equipment in pattern (1)-(15), comprise also whether the internal pressure of surveying described first suction channel is lower than the apparatus for detecting pressure and the recording controller by come executive logging to handle from described injection opening liquid droplets of first predetermined threshold, this recording controller comprises that record allows part, when the internal pressure that detects described first suction channel when this apparatus for detecting pressure was lower than described first predetermined threshold, this record allowed part to allow to carry out this recording processing.
According to the liquid-droplet ejecting apparatus of pattern (16), wherein when being lower than first predetermined threshold, the internal pressure of first suction channel allow executive logging to handle, under the state of the abundant intake-gas of liquid supply passage, starting recording processing.Therefore, prevent reliably also that during recording processing the gas from liquid feed path from flowing to the injection opening.
(17) according to the equipment of pattern (16), when wherein the internal pressure that detects described first suction channel when described apparatus for detecting pressure is not less than described first predetermined threshold, before described recording controller began described recording processing, described suction controller made described aspirator from described liquid supply passage intake-gas.
Description of drawings
When considered in conjunction with the accompanying drawings, by reading the following detailed description of the preferred embodiment of the present invention, purpose, feature, advantage and technology and industrial significance with other above the present invention will better be understood, wherein:
Fig. 1 is the plane according to the ink-jet printer of first embodiment of the invention;
Fig. 2 is the cutaway view of the check-valves of ink-jet printer;
Fig. 3 is the block diagram that illustrates the electrical structure of ink-jet printer;
Fig. 4 illustrates the perspective view of the ink gun shown in Fig. 1 under the state that secondary container and other parts remove from balladeur train;
Fig. 5 is at the plane that removes ink gun under the situation of skull;
Fig. 6 is the vertical sectional view along the secondary container of the line 6-6 of Fig. 5;
Fig. 7 A and Fig. 7 B illustrate apparatus for detecting pressure shown in Fig. 1 and near its view;
Fig. 8 A and Fig. 8 B are the horizontal cross of the pressure restrictor shown in Fig. 1;
Fig. 9 is the flow chart that illustrates the nozzle maintenance processing of being carried out by the control module of ink-jet printer;
Figure 10 is the flow chart that illustrates the recording processing of being carried out by control module;
Figure 11 illustrates the flow chart that the surplus of being carried out by control module is determined processing;
Figure 12 is the cutaway view according to the check-valves in the ink-jet printer of second embodiment;
Figure 13 A and Figure 13 B are the views according to the apparatus for detecting pressure in the ink-jet printer of the 3rd embodiment;
Figure 14 A and Figure 14 B are the views according to the apparatus for detecting pressure in the ink-jet printer of the 4th embodiment;
Figure 15 A is the curve map of the specific gas flow rate that detects with respect to the apparatus for detecting pressure as by Figure 14 A and Figure 14 B that suction time is drawn, and Figure 15 B is the curve map of internal pressure of the exploration vessel of the apparatus for detecting pressure drawn with respect to suction time;
Figure 16 is diagram with the result of detection of the apparatus for detecting pressure of Figure 14 A and Figure 14 B is the flow chart of the processing carried out during recording processing of basis;
Figure 17 is the plane according to the ink-jet printer of the 5th embodiment;
Figure 18 is that the ink gun at the ink-jet printer shown in Figure 17 is removing the plane under the state of skull;
Figure 19 A and Figure 19 B are the horizontal cross of the pressure control device shown in Figure 17;
Figure 20 is the plane according to the ink-jet printer of the 6th embodiment, and the suction channel that extends from suction pump in the 6th embodiment is different from first embodiment; And
Figure 21 is the cutaway view along the line 21-21 of Figure 20.
The specific embodiment
Hereinafter, by with reference to the accompanying drawings, presently preferred embodiment of the present invention will be described.
With reference to figure 1-11, with the ink-jet printer of describing according to the first embodiment of the present invention.Fig. 1 is the schematic plan view by the ink-jet printer of Reference numeral 1 indication.In the following description, as seeing among Fig. 1, main scanning direction and auxiliary scanning direction are respectively horizontal direction and vertical direction.
This ink-jet printer 1 comprises the ink gun 8 as the form of jet head liquid of the present invention.The ink droplet that this ink gun 8 sprays as the form of liquid of the present invention.Ink gun 8 has balladeur train 9 and the head main body 30 that is fixed on this balladeur train 9.A plurality of nozzle 30a (as spraying opening) are formed on the bottom or the lower surface place of this head main body 30, spray ink droplet from described a plurality of nozzle 30a.Head main body 30 is fixed on the balladeur train 9, and wherein nozzle 30a exposes downwards or opening.Secondary container 31 (describing after a while) is fixed on the upper surface of head main body 30.
In ink-jet printer 1, guiding frame 23 and guiding frame 24 exist the compartment of terrain to be arranged side by side on auxiliary scanning direction between them, and are parallel to the main scanning direction extension.Balladeur train 9 is arranged to and can be moved back and forth on guiding frame 23,24 along main scanning direction across guiding frame 23,24.Ink-jet printer 1 also comprises main frame 1a, and balladeur train mobile device 25 is arranged among this main frame 1a.Balladeur train mobile device 25 has CD-ROM drive motor, is used for moving back and forth on main scanning direction balladeur train 9.
Ink-jet printer 1 also comprises primary tank 5a-5d (as liquid container), and China ink supplies to head main body 30 from these primary tanks 5a-5d.More specifically, primary tank 5a-5d stores the China ink of promptly yellow (Y), magenta (M) of color, cyan (C) and black (Bk) separately.
In primary tank 5a-5d, surplus sniffer 6a-6d (as the surplus sniffer) is set respectively, be used for surveying remaining China ink amount at primary tank 5a-5d.Each surplus sniffer 6a-6d surveys the residue China ink amount in corresponding primary tank 5a-5d, and give control module 100 (describing after a while) transmission result of detection, whether the residue China ink amount among the result of that probe indication primary tank 5a-5d is less than the predetermined threshold that is set near zero value place.That is to say that when residue China ink amount equaled this threshold value, corresponding container not exclusively was empty or exhausts, and comprises the China ink amount that can write down some images.For example, surplus sniffer 6a-6d constitutes by being arranged on float among the container 5a-5d and shield and optical pickocff.According to moving of the surperficial horizontal plane of China ink, shield is along with float vertically moves.Reduce with the inking surface, shield is through detecting location, and this is detected by optical pickocff.When detecting shield through detecting location, on behalf of the signal of this process, optical pickocff will output to control module 100.
The China ink that is stored among the primary tank 5a-5d at first supplies to secondary container 31 and is stored in secondary container 31 places via separately China ink pipe 14a-14d, is fed into head main body 30 thereafter.Therefore, in this embodiment, China ink pipe 14a-14d and 31 cooperations of secondary container constitute ink-feed channel, and China ink supplies to head main body 30 by this ink-feed channel from primary tank 5a-5d, and this ink-feed channel is the form of liquid supply passage of the present invention.The China ink that supplies to head main body 30 sprays downwards from nozzle 30a.Ink-jet printer 1 also comprises media feeding device 26 (shown in Fig. 3).26 operations of media feeding device are to be fed to recording medium P the record position of guiding frame 23 and guiding frame 24 belows.
Therefore, ink droplet is ejected on the recording medium P that is positioned at record position from head main body 30.
Between guiding frame 23 and guiding frame 24, absorption component 22 is set.Absorption component 22 be arranged in guiding frame 23 and guiding frame 24 with respect near the position the end (that is left end) of two end opposite of main scanning direction as in Fig. 1, seeing.By mobile balladeur train 9 on main scanning direction, head main body 30 can be positioned at directly over the absorption component 22.Absorption component 22 by porous material for example polyurethane foam form, and can absorb the China ink that sprays from head main body 30.Control module 100 makes balladeur train 9 move to position directly over the absorption component 22, and makes head main body 30 spray the ink droplet that is absorbed by absorption component 22.Like this, carrying out the flushing that is used for flooding nozzle 30a handles.
In ink-jet printer 1, be provided as the capping apparatus 20 of the form of injection opening capping apparatus of the present invention, be used for being maintained in the zone of layout nozzle 30a of the lower surface of ink gun 8.Capping apparatus 20 has the suction block 21 as the form of block of the present invention, and be set to when balladeur train 9 moves to the scheduled maintenance position, be positioned under the head main body 30 near the position of this scheduled maintenance position right-hand member that seeing among Fig. 1, is arranged on guiding frame 23 and guiding frame 24.
Two to upper process 21b be formed on to upper process 21c on the upper surface of suction block 21.Take the form of the wall in area-encasing rectangle zone in plane to upper process to upper process 21b and in upper process 21c each.When balladeur train 9 during at the maintenance position place, in plane, surround to upper process 21b with to upper process 21c and respectively to organize nozzle 30a, every group of nozzle 30a is arranged on the lower surface of head main body 30.
Suction block 21 is arranged in the ink-jet printer 1, makes when balladeur train 9 during at the maintenance position place, and suction is blocked a shot and 21 can vertically be moved.More specifically, suction block 21 can make to the lower surface of upper process 21b, 21c and head main body 30 closely contact in case the covering position of covering nozzles 30a and making between upper process 21b, 21c withdraw downwards from the lower surface of head main body 30 or separate with the uncovering position of opening nozzle 30a move.Capping apparatus 20 has travel mechanism's (not shown), is used for covering mobile suction block 21 between position and the uncovering position.In plane, in by each zone that surrounds to upper process 21b, 21c, two suction opening 21a are formed in the upper surface of suction block 21.Promptly, in order to aspirate one or more pigment inks and one or more dye ink independently of one another, by to upper process 21b area surrounded corresponding to (for example spraying described one or more pigment inks, the Bk China ink) nozzle 30a, and by the nozzle 30a of projection 21c area surrounded corresponding to described one or more dye ink of injection (for example, Y, M and C China ink).
Ink-jet printer 1 also comprises as the suction pump 81 of the form of aspirator of the present invention with as the flow passage switching device shifter 82 of the form of switching device shifter of the present invention.Suction pump 81 and flow passage switching device shifter 82 are connected to each other via air hose 16.Flow passage switching device shifter 82 has first to four-hole 82a-82d.First mouthful of 82a is connected with an end of air hose 16, and second mouthful of 82b is connected with the end of air hose 17a, and the 3rd mouthful of 82c is connected with the end of air hose 17b, and four-hole 82d is connected with an end of air hose 18.The other end of air hose 17a and air hose 17b is connected with the suction opening 21a of suction block 21 respectively.Flow passage switching device shifter 82 can be optionally be communicated with first mouthful of 82a with a mouth in second to four-hole 82b-82d.Therefore, for example, by first mouthful of 82a is communicated with second mouthful of 82b, set up suction pump 81 can be via air hose 16 and air hose 17a the state of a suction opening 21a suction air from suction opening 21a, and by first mouthful of 82a is communicated with the 3rd mouthful of 82c, set up the state that suction pump 81 can be aspirated from another suction opening 21a via air hose 16 and air hose 17b.
The other end of air hose 18 is connected with charge cask 84 as the form of gas container of the present invention.When suction pump 81 was operated with suction air, charge cask 84 was operated with build pressure with air chamber 51 (describing after a while).Limit inner space 84a in charge cask 84, the end in two end opposite of this inner space is communicated with air hose 18.The other end of inner space 84a is communicated with an end of air hose 19.Inner space 84a as big by the vertical cross-sectional area that promptly cross-sectional area of the end to end in the two ends of space 84a is more vertical than the bearing of trend with air hose 18 and air hose 19 of air hose 18 and air hose 19 internally of the airflow direction among the inner space 84a of single-point line indication in Fig. 1.On the other hand, the other end of air hose 19 is connected with secondary container 31.
Some place in air hose 18 is provided with check-valves 83.Fig. 2 illustrates an example of check-valves 83, is wherein forming the first valve chamber 83b and the second valve chamber 83c that is communicated with air hose 18 on flow passage switching device shifter 82 sides and on charge cask 84 sides respectively.In the first and second valve chamber 83b and 83c, hold valve element 83a.Valve element 83a has chamfered portion, and this chamfered portion is according to the distortion of the pressure differential between the internal pressure of the internal pressure of the first valve chamber 83b and the second valve chamber 83c.When being reduced to the internal pressure with the first valve chamber 83b from air hose 18 suction airs, suction pump 81 make the suction force of doing to be used for from the first valve chamber 83b overcome when the second valve chamber 83c makes the degree of the suction force that is used for, valve element 83a is positioned at open position to open connected component, and the first and second valve chamber 83b, 83c can communicate with each other in this interconnecting part office.When suction pump 81 stops to make the suction force of from second valve chamber 83c doing be used for overcome when first valve chamber 83b make the degree of the suction force that be used for the internal pressure that increases by the first valve chamber 83b so that will be reduced to from the suction force that the first valve chamber 83b does to be used for from air hose 18 suction airs, valve element 83a moves to the closed position to be closed in the connected component between the first and second valve chamber 83b, the 83c, disconnects the connection between the first and second valve chamber 83b, 83c thus.
Therefore, when suction pump 81 during from air hose 18 suction airs, valve element 83a is positioned at open position, that is, check-valves 83 places under the open mode, and when suction pump 81 stops from air hose 18 suction airs, valve element 83a moves to the closed position, that is, check-valves 83 places under the closed condition.Like this, the air stream in the check-valves 83 control air hoses 18 makes air only flow in the direction from charge cask 84 to flow passage switching device shifter 82.
In air hose 19, be provided with apparatus for detecting pressure 60 and pressure restrictor 69 (the two is all described after a while) at the respective point place as the form of apparatus for detecting pressure of the present invention.Apparatus for detecting pressure 60 can detecting air pipe 19 the level of internal pressure, and pressure restrictor 69 is operated when the internal pressure of air hose 19 extremely reduces.
As mentioned above, secondary container 31 and flow passage switching device shifter 82 communicate with each other via air hose 19, charge cask 84 and air hose 18. Air hose 18,19 and charge cask 84 cooperations are to constitute first suction channel of the present invention.By flow passage switching device shifter 82 is communicated with first mouthful of 82a with four-hole 82d, setting up suction pump 81 can be via air hose 16,18, charge cask 84 and air hose 19 state from secondary container 31 suction airs.
Ink-jet printer 1 also comprises the control module 100 of the various types of operations that are used to control ink-jet printer 1.Promptly, in ink-jet printer 1, hardware is installed, processor circuit and be used to store various types of storage devices of various types of softwares for example, this software comprises the program that is used to operate this processor circuit, and hardware and software constitute control module 100.As shown in Figure 3, control module 100 comprises record controls part 101 (as recording controller), and the record that these record controls part 101 controls are carried out by ink-jet printer 1 is operated to form image on recording medium, and this image comprises character, symbol and figure.That is be that basis control is presented recording medium, moves balladeur train 9 by balladeur train mobile device 25 and sprayed executive logging operation under the situation of ink droplets from ink gun 8 by media feeding device 26 with the view data, in record controls part 101.Control module 100 also comprises suction control section 102 (as the suction controller), the suction operation that these suction control section 102 controls are carried out by operation suction pump 81.Suction control section 102 in can aspirating secondary container 31 air state and can aspirate the state of switching flow passage switching device shifter 82 between the air state of block 21 inboards.Suction control section 102 is in the covering position of covering nozzles 30a and open mobile capping apparatus 20 between the open position of nozzle 30a.In addition, the operation of suction control section 102 control suction pumps 81.By these operations, suction control section 102 is carried out suction operation, and the inboard that is used to aspirate secondary container 31 perhaps is used for the inboard of suction nozzle 30a.Control module 100 also comprises the surplus determining section 103 of the residue China ink amount of determining among the primary tank 5a-5d.
Control module 100 receives the result of detection of surplus sniffer 6a-6d and the result of detection of apparatus for detecting pressure 60.Based on the result who receives, control module 100 operation of control record and suction operation.It can be arranged such that: when the result of detection indication of the output of any surplus sniffer from surplus sniffer 6a-6d is provided with residue China ink amount among the primary tank 5a-5d of surplus sniffer 6a-6d near zero the time, control module 100 presents the message of indicating this fact on the display unit (not shown).This moment, at first indicate residue China ink amount among primary tank 5a-5d near zero from the result of surplus sniffer 6a-6d output, control module 100 begins that ink gun 8 is sprayed the number of times that is stored in the ink droplet among the in question primary tank 5a-5d to be counted.This injecting times uses in after a while the surplus of describing being determined to handle.
With reference to figure 4 and Fig. 5, ink gun 8 will be described in further detail.Fig. 4 is the perspective view of ink gun 8, and wherein skull, secondary container 31 and other parts remove from balladeur train 9.Fig. 5 is that ink gun 8 is at the plane that removes under the state of skull.Balladeur train 9 generally has the shape at the cuboid or the box of last side opening.Balladeur train 9 holds secondary container 31 and head main body 30, and skull (not shown in Fig. 4 and Fig. 5) covers balladeur train 9 from upside.
Secondary container 31 has the part of introducing 31a, and China ink pipe 14a-14d and air hose 19 are connected with this introducing part 31a.Head main body 30 is fixed on the bottom of balladeur train 9.As shown in FIG. 4, on the upper surface of head main body 30, form four mouth 30c.Mouth 30c introduces four kinds of China inks of different colours respectively as inlet by this inlet.Having the secondary container 31 that is used for to the outlet of the China ink of head main body 30 ink supply is contained in balladeur train 9 and above head main body 30, makes these China ink outlets be communicated with a mouth 30c.
In head main body 30, form the ink passage (not shown).End in two end opposite of each ink passage is communicated with a nozzle among the nozzle 30a, and the other end in two end opposite of each ink passage is communicated with a mouth among mouthful 30c.As shown in Figure 4, jet actuator 30b is attached to the upper surface of head main body 30.The China ink that jet actuator 30b optionally gives the ink passage in the filling head main body 30 sprays energy, so that spray ink droplet from the nozzle 30a at the lower surface split shed of head main body 30.For example, jet actuator 30b is made of piezoelectric layer and electrode layer, is used for producing electric field so that make the piezoelectric layer distortion at the piezoelectric layer place.When the driving signal supplies to electrode layer, the piezoelectric layer distortion, thus the pressure that causes ink passage China and Mexico changes so that spray ink droplet.
As shown in FIG. 4, flexible distributing board 72 extends upward from the upper surface of jet actuator 30b, so that be connected with control module 100.Flexible distributing board 72 is used to spray ink droplet for electrode layer provides the driving signal.Flexible distributing board 72 has the wiring that is used for transmission of electric signals.On flexible distributing board 72, be equipped with drive circuit board 73.Control module 100 sends the control signal that is used for ink droplet jet for drive circuit board 73 via flexible distributing board 72, and when receiving control signal, drive circuit board 73 converts control signal to the driving signal that sends to jet actuator 30b.Drive circuit board 73 vertically and along auxiliary scanning direction extends, and has shape long on auxiliary scanning direction.Extending along the surface vertical of drive circuit 73 with main scanning direction with flexible distributing board 72 opposed first surfaces.Also extending with the first surface opposed second surface of drive circuit 73 along this surface vertical with main scanning direction with respect to auxiliary scanning direction.
In balladeur train 9, be provided with the radiator 71 that is used to prevent that drive circuit board 73 is overheated.As shown in Fig. 4 and Fig. 5, radiator 71 is formed by metal, and elongated on auxiliary scanning direction.Radiator 71 is being arranged on the main scanning direction between drive circuit board 73 and the secondary container 31.Extending along the surface of drive circuit board 73 of radiator 71 with drive circuit board 73 opposed surfaces, and closely contact with drive circuit board 73.In order to maintain the tight contact between radiator 71 and the drive circuit board 73, radiator 71 is fixed to drive circuit board 73 by being attached to drive circuit board 73 with adhesive or alternate manner.Replacedly, can be by being used for that elastic component or other member that bias force is applied on the radiator 71 are kept this tight contact.Under the situation that radiator 71 and drive circuit board 73 keep closely contacting like this, the heat that produces at drive circuit board 73 places is delivered to radiator 71 with being stabilized.
With reference to figure 5 and Fig. 6, will the internal structure of secondary container 31 be described.In Fig. 5, the internal structure of secondary container 31 is indicated by dotted line.Fig. 6 is the vertical sectional view along the secondary container 31 of the line 6-6 of Fig. 5.
As shown in FIG. 6, secondary container 31 has container body 31b and cover component 31c.
As shown in FIG. 5, form the black 41-44 of locker room in container body 31b, China ink is stored in respectively among these black 41-44 of locker room.In container body 31b, also be formed for China ink is incorporated into from China ink pipe 14a-14d the ink passage 45-48 of the black 41-44 of locker room.That is, flow to the black 41-44 of locker room via China ink introducing passage 45-48 by the China ink that China ink pipe 14a-14d supplies with from primary tank 5a-5d.The China ink 41-44 of locker room stores separately, and color is the China ink of Bk, C, M and Y.Be noted that:
Although only illustrate a black locker room 42 among the black 41-44 of locker room among Fig. 6, the black 41-44 of locker room structurally is common,, has the structure shown in Fig. 6 that is, unless other special declaration.
The China ink 41-44 of locker room roughly has rectangular shape long on auxiliary scanning direction, and arranges along main scanning direction.The China ink 42-44 of locker room has identical internal capacity, and black locker room 41 has the internal capacity bigger than the internal capacity of other black 42-44 of locker room.This is that therefore black locker room 41 needs to store a large amount of China ink than other black 42-44 of locker room because 41 storages of black locker room are the Zao Bk China ink or the black ink that exhausts of China ink of cyan (C), magenta (M) and yellow (Y) than other China ink generally.
In container body 31b and above the black 41-44 of locker room, form intercommunicating pore 41a-44a.
The upper surface of container body 31b extends along horizontal surface, and intercommunicating pore 41a-44a is at the upper surface split shed of container body 31b.Ventilative film 53 usefulness adhesives or alternate manner are attached to the upper surface of container body 31b, make ventilative film 53 cover or close the openend of intercommunicating pore 41a-44a.Ventilative film 53 allows gases by ventilative film 53, and for example China ink and solid material pass through ventilative film 53 but do not allow other material.For example, ventilative film 53 is formed by the porous fluoride resin material.
In container body 31b, and, be formed with ink outlet passage 41b-44b, be used for China ink being supplied to head main body 30 by ink outlet passage 41b-44b at the place, bottom of the black 41-44 of locker room.Ink outlet passage 41b-44b is communicated with upper end or arrival end at the mouth 30c of the upper surface split shed of head main body 30.For the ease of understanding, do not illustrate ink outlet passage 41b-44b among Fig. 5, and in Fig. 6, only illustrate an ink outlet passage 42b among the ink outlet passage 41b-44b.
In cover component 31c, form air chamber 51 and air duct 52.In plane, air chamber 51 has rectangular shape long on main scanning direction.More specifically, air chamber 51 is the recesses in the cover component 31c of the lower surface split shed of cover component 31c, and extends across the black 41-44 of locker room on main scanning direction.End in two end opposite of air chamber 51 and air duct 52 is communicated with.The other end of air duct 52 is communicated with air hose 19.
With reference to figure 7A and Fig. 7 B apparatus for detecting pressure 60 will be described.Air hose 19 comprises pressure probe portion 19a, and the part of the wall of air hose 19 is flexible at this pressure probe portion 19a place, and expands and shrink according to the variation of the internal pressure of air hose 19.Apparatus for detecting pressure 60 comprises as optical pickocff 62 on the outside that is arranged on pressure probe portion 19a of the form of detecting element of the present invention and shield 61.Optical pickocff 62 has: the light radiating portion 62a of emission light α; With light receiving part 62b, this light receiving part 62b comprises the light receiving element that is arranged on the straight line that extends along the path of emission light α.Light receiving part 62b exports to control module 100 to the signal of the light intensity that expression light receiving part 62a receives.
The flexible portion and the optical pickocff 62 of the wall in pressure probe portion 19a of air hose 19 are opposed, and formed by elastic film 63, this elastic film 63 is formed by the variation elastomeric material more easily deformable than the material of the other parts that form air hose 19 corresponding to the internal pressure of air hose 19.The elastic film 63 that replacement is formed by elastomeric material, other flexible member for example resin film can constitute the flexible portion of the wall in pressure probe portion 19a of air hose 19.In pressure probe portion 19a, be provided with towards the biasing member 64 of optical pickocff 62 biasing elastic films 63.Therefore, when the internal pressure of air hose 19 was equal to or higher than first predetermined threshold, elastic film 63 was out of shape shown in Fig. 7 A with outstanding towards optical pickocff 62.Along with the internal pressure of air hose 19 when the state of Fig. 7 A reduces because poor between the external pressure of air hose 19 and internal pressure, the bias force of elastic film 63 opposing biasing members 64 is to internal strain.
Shield 61 is fixed to the outer surface of elastic film 63.The position that shield 61 is fixed makes: along with elastic film 63 is out of shape as mentioned above, shield 61 moves to and the separated second place of primary importance (shown in Fig. 7 B) from primary importance (shown in Fig. 7 A), and this primary importance is corresponding to the detecting location that stops light α on the path of light α.In addition, the bias force of biasing member 64 is configured to make: when the internal pressure of air hose 19 was equal to or higher than first threshold, shield 61 stopped light α, and when the internal pressure of air hose 19 was lower than first threshold, shield 61 left the path of light α.Therefore, based on the light intensity that receives from the signal indication of light receiving part 62b, control module 100 can determine whether shield 61 is positioned on the path of light α.Based on this result who determines, control module 100 can determine whether the internal pressure of air hose 19 is lower than first threshold.Like this, whether the internal pressure that apparatus for detecting pressure 60 can detecting air pipe 19 is lower than this threshold value.Be noted that biasing member 64 can be omitted so as long as flexible enough height of elastic film 63 and elastic film 63 are the films that can be out of shape according to the variation of the internal pressure of air hose 19.
Yet, thereby being reduced to internal pressure far below first threshold and air chamber 51 when significantly reducing when the internal pressure of air hose 19, excessive load may be applied on the ventilative film 53.According to this embodiment, be applied on the ventilative film 53 in order to prevent this excessive load, be provided with pressure restrictor 69.As shown in Fig. 8 A, pressure restrictor 69 is tubular elements, and this tubular element has makes air hose 19 can be engaged in the size in this tubular element.The first open end 19b on air chamber 51 sides of air hose 19 is engaged in the end in two end opposite of pressure restrictor 69.The second open end 19c on apparatus for detecting pressure 60 sides of air hose 19 is engaged in the other end of pressure restrictor 69.When the internal pressure of air hose 19 is reduced to when being lower than first threshold, pressure restrictor 69 makes the wall of pressure restrictor 69 attenuation or pressure restrictor 69 be tracted inwards according in the external pressure of pressure restrictor 69 and the difference distortion between the internal pressure.Pressure restrictor 69 is adjusted to feasible: when the internal pressure of air hose 19 was reduced to second predetermined threshold, for the internal pressure that prevents air hose 19 excessively reduces, the inner space of pressure restrictor 69 was closed as shown in Fig. 8 B fully.
The control of being carried out by control module 100 will be described in further detail.The suction control section 102 of control module 100 is carried out the air chamber suction process, is used to make suction pump 81 suction air chambers 51.This air chamber suction process will be described.When these pipes 16,18 did not communicate with each other, suction control section 102 initial control flow passage switching device shifters 82 were to be based upon the connection between air hose 16 and the air hose 18.By like this, suction pump 81 and air chamber 51 communicate with each other via air hose 16,18, charge cask 84, air hose 19 and air duct 52.Air duct 52 is cooperated to constitute first suction channel of the present invention with air hose 18,19 and charge cask 84.Then, suction pump 81 operations serve as that the basis determines that the internal pressure of air hose 19 is lower than first threshold with from air chamber 51 suction airs up to the result of detection with apparatus for detecting pressure 60, that is, the internal pressure of air chamber 51 is lower than first threshold.
As mentioned above, check-valves 83 is set at some place of air hose 18, and the mobile direction that is restricted to from charge cask 84 to flow passage switching device shifter 82 of the air in the air hose 18.
Therefore, when the termination of air chamber suction process makes the operation of suction pump 81 stop or making that passing through operation flows path switching device 82 switching flow passages, the internal pressure (being the internal pressure of air hose 19 or charge cask 84) of air chamber 51 be reduced to be lower than first threshold after, because the internal pressure of these valve chambers 83b, 83c is poor, valve element 83a is placed in the closed position and sentences the connection that disconnects between the first and second valve chamber 83b and the 83c.Therefore, forbid that air flows in the air chamber 51, make it possible to thus the internal pressure of air chamber 51 is kept below first threshold.
Because air chamber 51 and the black 41-44 of locker room are limited on two opposition sides of ventilative film 53, so, keep below first threshold by internal pressure with air chamber 51, air among the China ink 41-44 of locker room can separate (promptly carrying out gas-liquid separation) with China ink, and is sucked in the air chamber 51 by ventilative film 53.Therefore, in the present embodiment, be used for aspirating the air of the black 41-44 of locker room by execution from the air chamber suction process of air chamber 51 suction airs.That is, in the air chamber suction process, from the ink-feed channel suction air, this ink-feed channel is the form of liquid supply passage of the present invention, and extends to head main body 30 from primary tank 5a-5d via the black 41-44 of locker room.By carrying out the air chamber suction process, carry out passage suction process of the present invention.Above-mentioned first threshold is configured to make: by passing through ventilative film 53 suction airs from the black 41-44 of locker room, can be implemented in the gas-liquid separation of the enough degree between air and the China ink.For example, first threshold is set in the value place that is lower than atmospheric pressure.Therefore, keep the internal pressure of air chamber 51 to be lower than first threshold, keep the gas-liquid separation among the black 41-44 of locker room, forbid that thus air flows into the head main body 30 from the black 41-44 of locker room.
Based on the result of detection of apparatus for detecting pressure 60, control module 100 can determine whether the internal pressure of air chamber 51 is lower than first threshold.Therefore, feasiblely be: carry out control make control module 100 operations so that suction pump 81 suction air chambers 51 up to the internal pressure that apparatus for detecting pressure 60 detects air chamber 51 be reduced to be lower than first threshold till.
Based on the result of detection of apparatus for detecting pressure 60, control module 100 is also carried out various other controls and is handled.To describe these controls handles.
It is that graphic in a flowchart nozzle maintenance is handled in Fig. 9 that first control during other control is handled is handled.Handling process starts from step S1, and in this step S1, based on the intensity from the light α of the signal indication of the light receiving part 62b of apparatus for detecting pressure 60, control module 100 determines whether the internal pressure of air hoses 19 is lower than first threshold.When control module 100 determines that the internal pressure of air hose 19 is not less than this threshold value, in step S1, make negative evaluation (denying), and handling process forwards step S3 to, and in this step S3, the suction control section 102 of control module 100 is carried out the air chamber suction process.Up to the internal pressure of air hose 19 be reduced to be lower than first threshold till, step S1 and step S3 just repeat, and in other words, continue the air chamber suction process.
When control module 100 determines that in step S1 the internal pressure of air hose 19 is lower than this threshold value, make affirmative determination (being), and handling process forwards step S2 to, in this step S2, suction control section 102 starting nozzle suction operation.Following execution nozzle suction operation.The first, suction control section 102 control flow passage switching device shifters 82 are to be communicated with air hose 16 and air hose 17a.Under the situation of having set up the connection between air hose 16 and the air hose 17a, the inner space of a projection 21b in the projection of suction pump 81 and suction block 21 communicates with each other via an air hose 17a and a corresponding suction opening 21a.The air duct that is made of air hose 17a and suction opening 21a is corresponding to second suction channel of the present invention.
Then, the operation of suction control section 102 to be moving to balladeur train 9 maintenance position of capping apparatus 20 tops, and control capping apparatus 20 moves to the covering position and comes sealed-in nozzles 30a will aspirate block 21.Therefore be sucked after block 21 covers the inner space of the projection 21b of suction control section 102 control suction pumps 81 suction suction blocks 21 at nozzle 30a.After this, suction control section 102 control flow passage switching device shifters 82 to be communicating with each other air hose 16 and air hose 17b, and make the inner space suction of another projection 21c of suction pump 81 from two projection 21b, 21c of suction block 21.Then, the nozzle 30a that is surrounded by projection 21c in plane stands the suction of suction pump 81 at this moment.By carrying out the nozzle suction operation, got rid of the useless China ink around nozzle 30a on the lower surface of head main body 30 and be introduced in air in the ink passage.According to nozzle suction operation, nozzle 30a that surrounds or cover by projection 21b and the suction that can stand suction pump 81 by the nozzle 30a that projection 21c surrounds or covers independently of one another.
As mentioned above, handle according to nozzle maintenance, when the result of detection with apparatus for detecting pressure 60 serves as that the basis is when determining that the internal pressure of air chamber 51 (perhaps air hose 19) is equal to or higher than first threshold, carry out the air chamber suction process, and the suction (being the air chamber suction process) that continues to carry out air chamber 51 up to the internal pressure of air chamber 51 be reduced to be lower than first threshold till.When the internal pressure of air chamber 51 has been reduced to when being lower than first threshold the starting nozzle suction operation.Therefore, forbid internal pressure at air chamber 51 be reduced to be lower than first threshold before the starting nozzle suction operation.That is, forbid that gas-liquid separation in the black 41-44 of locker room carries out the nozzle suction operation before not reaching enough degree, otherwise will cause undesirably that air flows into the head main body 30 from the black 41-44 of locker room.When relative hour of the aspiration of nozzle suction operating period, may get rid of bubble in the ink passage deficiently by the nozzle suction operation.Yet, according to present embodiment, before the nozzle suction operation, carry out the air chamber suction process, make and only after the internal pressure of air chamber 51 is lower than first threshold, just carry out the nozzle suction operation as mentioned above, therefore, the China ink from the black 41-44 of locker room get rid of or separation of air after just carry out the nozzle suction operation, reduce thus to flow to air capacity the head main body 30 from the black 41-44 of locker room.Therefore, even under the relatively little situation of the aspiration in nozzle suction operation, forbid that also bubble remains in the ink passage.In the present embodiment, the part of the execution in step S1 of control module 100 constitutes injection opening suction permission part.
Other second control processing of controlling in handling of carrying out based on the result of detection of apparatus for detecting pressure 60 is a graphic in a flowchart recording processing in Figure 10.Recording processing starts in step S11, and in this step S11, based on the light intensity from the signal indication of the light receiving part 62b of apparatus for detecting pressure 60, control module 100 determines whether the internal pressure of air hoses 19 is lower than first threshold.When the internal pressure of determining air hose 19 is not less than first threshold, in step S11, make negative evaluation (denying) and handling process and forward step S13 to, in this step S13, the suction control section 102 of control module 100 is carried out the air chamber suction process.After this, up to the internal pressure of air hose 19 be reduced to be lower than first threshold till, in other words repeated execution of steps S11 and step S13, continue the air chamber suction process.When the internal pressure of determining air hose 19 has been reduced to when being lower than first threshold, in step S11, make affirmative determination (being), and handling process forwards step S12 to, in this step S12, the record controls part 101 of control module 100 starts the record operation.
As mentioned above, in recording processing, when the result of detection with apparatus for detecting pressure 60 serves as that the basis is when determining that the internal pressure of air chamber 51 (perhaps air hose 19) is equal to or higher than described threshold value, carry out the air chamber suction process, and continue from air chamber 51 suction airs (being the air chamber suction process) up to the internal pressure of air chamber 51 be reduced to be lower than first threshold till.When the internal pressure of air chamber 51 has been reduced to when being lower than first threshold, start the record operation.Therefore, forbidding that internal pressure at air chamber 51 is reduced to starts the record operation before being lower than first threshold.This has forbidden again when the gas-liquid separation among the black 41-44 of locker room does not reach enough degree because the record operation of carrying out and air flows to the head main body 30 from the black 41-44 of locker room.In the present embodiment, the part of the execution in step S11 of control module 100 constitutes record permission part.
Even after starting the record operation, also can continue by suction pump 81 from air chamber 51 suction airs, perhaps can work as when starting record and operating termination by suction pump 81 from air chamber 51 suction airs.As mentioned above, though when starting the record operation when stopping suction, check-valves 83 is also operated with the internal pressure with air chamber 51 and is kept below first threshold.After starting the record operation, spray ink droplet from nozzle 30a, and the part of the China ink among the primary tank 5a-5d moves or flows among the black 41-44 of locker room, to replenish the black 41-44 of locker room.At this moment, the air that comprises in the China ink of storing among the primary tank 5a-5d also can move or flow among the black 41-44 of locker room with inking.Yet according to this embodiment, under the internal pressure of air chamber 51 remained on situation under the first threshold, the air of therefore being introduced among the black 41-44 of locker room separated with China ink among the black 41-44 of locker room.
Other the 3rd control processing of controlling processing of carrying out based on the result of detection of apparatus for detecting pressure 60 is that surplus is determined processing.Usually, be lower than first threshold in case by the air chamber suction process internal pressure of air chamber 51 is reduced to, just the operation by check-valves 83 remains on the internal pressure of air chamber 51 under the first threshold.Even the internal pressure of air chamber 51 does not also reduce but when keeping being equal to or higher than first threshold after starting the air chamber suction process, just supposition: the China ink at least one primary tank in primary tank 5a-5d exhausts, and the air in the container 5a-5d that exhausts the black 41-44 of locker room flows in the air chamber 51 via correspondence.Based on this phenomenon, the surplus determining section 103 of control module 100 is carried out the surplus that is used to discern the primary tank 5a-5d that exhausts and is determined to handle.Figure 11 is the flow chart that the diagram surplus is determined processing.
Surplus determines that processing starts from step S21, and in this step S21, control module 100 serves as that the basis determines whether the internal pressure of air chamber 51 (perhaps air hose 19) is equal to or higher than first threshold with the result of detection of apparatus for detecting pressure 60.When definite internal pressure not only had been not equal to but also be not higher than threshold value, in step S21, make negative evaluation (denying), and the surplus determining section 103 of control module 100 determines not have primary tank 5a-5d to exhaust, and surplus that should circulation is determined to handle and is stopped.On the other hand, when the internal pressure of air chamber 51 is equal to or higher than threshold value and makes affirmative determination (being) in step S21, handling process forwards step S22 to, and in this step S22, the suction control section 102 of control module 100 is carried out the air chamber suction process.After this, handling process forwards step S23 to, and in this step S23, surplus determining section 103 serves as that the basis determines once more whether the internal pressure of air chamber 51 still is equal to or higher than threshold value with the result of detection of apparatus for detecting pressure 60.When the internal pressure of determining air chamber 51 returns to the level that is lower than first threshold and make negative evaluation (denying) in step S23, determine not have primary tank 5a-5d to exhaust, and the surplus that should circulate determine that processing stops.
On the other hand, when the internal pressure of determining air chamber 51 still was equal to or higher than threshold value and makes affirmative determination (being) in step S23, surplus determining section 103 determined that at least one primary tank among the primary tank 5a-5d exhausts.Then, handling process forwards step S24 to, in this step S24, based on the result of detection of surplus sniffer 6a-6d, surplus determining section 103 determines residue China ink amount is less than the described threshold value that is set near zero value place in which primary tank 5a-5d.More specifically, when at least one primary tank among the primary tank 5a-5d exhausts, the result of detection of the surplus sniffer 6a-6d corresponding with the primary tank 5a-5d that exhausts will indicate residue China ink amount to be lower than near zero described threshold value.Therefore, when the residue China ink amount of result of detection indication in a described primary tank of the surplus sniffer 6a-6d corresponding with any primary tank among the primary tank 5a-5d was lower than near zero described threshold value, surplus determining section 103 determined that described primary tanks exhaust.
Then, handling process forwards step S25 to, and in this step S25, whether surplus determining section 103 determines to have in step S24 the residue China ink amount among a plurality of primary tank 5a-5d to be confirmed as less than threshold value.When only the China ink of the residue in single primary tank 5a-5d amount is confirmed as less than the threshold value among the step S24 in step S24, in step S25, make negative evaluation (denying), and handling process forwards step S27 to.On the other hand, when the China ink of the residue among a plurality of primary tank 5a-5d in step S24 amount is confirmed as less than threshold value, in step S25, make affirmative determination (being), and handling process forwards S26 to, in this step S26, be confirmed as less than with regard to the primary tank 5a-5d of threshold value with regard to residue China ink amount among the step S24, surplus determining section 103 is with reference to the estimation China ink amount that has been consumed, and this is to be that in question primary tank 5a-5d almost exhausts because surplus sniffer 6a-6d at first indicates residue China ink amount to be lower than threshold value.That is, in the present embodiment, to from the number of times of nozzle 30a injection ink droplet count corresponding with in question each primary tank 5a-5d.These countings are used as the black value of measuring of estimation that expression consumes, and determine the primary tank that most probable exhausts among the in question primary tank 5a-5d based on these values.Being defined as like this that primary tank that most probable exhausts is determined is a primary tank that exhausts among the primary tank 5a-5d.Then, handling process forwards step S27 to and exhausts notifier processes with execution, is used to notify exhausting of the definite like this primary tank 5a-5d of user.For example execution exhausts notifier processes, makes to present character string or other content of indicating the primary tank that is determined on display unit.
The operation and the effect of present embodiment will be described.
According to present embodiment, because the operation of aforesaid check-valves 83, even stopping after air chamber 51 suction airs, air also is held with China ink among the black 41-44 of locker room and separates.
Therefore, even under the situation that after this starts record operation or nozzle suction operation, forbid that also air flows to the head main body 30 from the black 41-44 of locker room.
Because the result of detection with apparatus for detecting pressure 60 serves as that various controls processing are carried out on the basis, continue to be lower than the control of first threshold up to the internal pressure of air chamber 51 so can carry out, and start the control that record operation and nozzle suction are operated when the internal pressure of air chamber 51 has been reduced to carry out when being lower than first threshold from air chamber 51 suction airs.
In surplus is determined to handle, the result of detection indication internal pressure of wherein determining apparatus for detecting pressure 60 is equal to or higher than threshold value, after carrying out the air chamber suction process, repeat to make identical determining, and only when definite result of detection indication internal pressure still is equal to or higher than threshold value, determine that at least one primary tank among the primary tank 5a-5d exhausts.Therefore, because former exhausting of at least one primary tank in primary tank 5a-5d thereby air only takes place flow under the situation in the air chamber 51 temporarily, do not make the mistake that at least one primary tank among the primary tank 5a-5d exhausts and determine.That is, determine that with high accuracy at least one primary tank exhausts.
In surplus is determined to handle, based on the result of detection of apparatus for detecting pressure 60 and make after at least one primary tank that determines whether among the primary tank 5a-5d exhausts, with the result of detection of surplus sniffer 6a-6d is that the basis is made more specifically and being determined, has determined whether that promptly a plurality of primary tank 5a-5d exhaust or at least almost exhaust.When in the determining of the latter, making affirmative determination, promptly when definite a plurality of primary tank 5a-5d exhaust or at least almost exhaust, based on the number of times of ink droplet jet, determine at the primary tank that most probable exhausts of being estimated that is determined among the primary tank 5a-5d that exhausts or at least almost exhaust.Therefore, can determine the primary tank that exhausts with high precision and accuracy.
Between air chamber 51 and check-valves 83, be provided with and be connected charge cask 84, the cross-sectional area of this charge cask 84 is greater than the cross-sectional area of air hose 18 and air hose 19.Therefore, only compare by air hose situation connected to one another with air chamber 51 and check-valves 83, the internal capacity of the air duct between air chamber 51 and check-valves 83 is increased.This means that the internal capacity that is used for build pressure increases, this internal pressure that prevents air chamber 51 effectively is equal to or higher than first threshold too continually, that is, even when only the air of small quantity is introduced into air chamber 51, the internal pressure of air chamber 51 also is equal to or higher than threshold value.So, can prolong and the black 41-44 of locker room can be remained on air and separate with China ink or realize period under the state of gas-liquid separation.
Some place in air hose 19 is provided with pressure restrictor 69, and when the internal pressure of air hose 19 excessively reduced, pressure restrictor 69 was closed the inner space of air hose 19.So even when the internal pressure at air chamber 51 during the air chamber suction process reduces well below first threshold, for the internal pressure that prevents air chamber 51 excessively reduces, pressure restrictor 69 is also closed the inner space of air hose 19.
With reference to figure 12-20, with the ink-jet printer of describing according to other embodiments of the invention.In the describing below of other embodiment, with previously described first or the parts of other embodiment or element corresponding components or element will by first or previously described embodiment in the identical Reference numeral that uses represent that and its description is save.
With reference to Figure 12, with the ink-jet printer of describing according to second embodiment of the invention, the difference of this second embodiment and first embodiment is check-valves.More specifically, in a second embodiment, adopt check-valves 183 to substitute check-valves 83.As as shown in Figure 12 of the cutaway view of check-valves 183, in check-valves 183, form the first valve chamber 183c and the second valve chamber 183d.The first valve chamber 183c is communicated with air hose 18 on flow passage switching device shifter 82 sides, and the second valve chamber 183d is communicated with air hose 18 on charge cask 84 sides.In the first and second valve chamber 183c and 183d, hold valve element 183b.Valve element 183b can be used to disconnect the closed position of the connection between the first and second valve chamber 183c, the 183d and open between the open position that this connected component is used to allow this connection and move closing connected component between the first and second valve chamber 183c, the 183d.The biasing member 183a that valve element 183b is biased to the closed position is set in the first valve chamber 183c.So when suction pump 81 during not from air hose 18 suction airs, valve element 183b is maintained at the closed position and sentences the connected component that is closed between the first and second valve chamber 183c, the 183d.On the other hand, when suction pump 81 during from air hose 18 suction airs, the internal pressure of the first valve chamber 183c reduces, and overcome the bias force of biasing member 183a and the making a concerted effort of the suction force doing from the second valve chamber 183d to be used for from the suction force that the first valve chamber 183c does to be used for, place open position to sentence valve element 183b to open the connected component between the first and second valve chamber 183c, 183d thus.When suction pump 81 stopped from air hose 18 suction airs, the suction force of doing to be used for from the first valve chamber 183c reduced, and the suction force that is used for of the bias force of biasing member 183a and do from the second valve chamber 183d with joint efforts valve element 183b is moved to the closed position.Therefore, as the check-valves among first embodiment 83, the air of check-valves 183 in can limit air pipe 18 flows in the direction from charge cask 84 to flow passage switching device shifter 82.
By with reference to figure 13A and Figure 13 B, with the ink-jet printer of describing according to the 3rd embodiment, the difference of the 3rd embodiment and first embodiment is apparatus for detecting pressure.That is, in the 3rd embodiment, adopt apparatus for detecting pressure 160 to substitute apparatus for detecting pressure 60.Figure 13 A and Figure 13 B are the cutaway views of apparatus for detecting pressure 160.In the 3rd embodiment, apparatus for detecting pressure 160 is provided with together in company with bellows container 184, the charge cask 84 that adopts this bellows container 184 to substitute among first embodiment.Apparatus for detecting pressure 160 comprises exploration vessel 162 and the bellows container 184 that is arranged in the exploration vessel 162.Bellows container 184 has the shape of bellows, and can vertically move or distortion according to its internal pressure, and is fixed on the basal surface of exploration vessel 162.Air duct 162a is formed in the exploration vessel 162, and this air duct 162a is communicated with the inner space of air hose 18,19 and bellows container 184.
Exploration vessel 162 upward openings, and switching device shifter 161 is fixed on the upper surface of exploration vessel 162.Switching device shifter 161 comprises switching lever 161a, and this switching lever 161a can switch between second state shown in first state shown in Figure 13 A and Figure 13 B.Under first state, switch lever 161a and tilt, wherein its far-end is positioned at upside.Under second state, switch lever 161a and tilt, wherein this far-end is positioned at downside.Switching device shifter 161 has and is used for switching the device that direction upper offset that lever 161a places second state switches lever 161a.Switching device shifter 161 sends the detectable signal that expression switching lever 161a is in which state in first and second states for control module 100.
When the internal pressure of bellows container 184 was equal to or higher than threshold value, as shown in FIG. 13A, the upper end of bellows container 184 contacted with switching lever 161a, will switch lever 161a thus and remain under first state.When the internal pressure of bellows container 184 reduced, bellows container 184 was shunk downwards, and when this internal pressure was lower than this threshold value, separated from switching lever 161a the upper end of bellows container 184, will switch lever 161a thus and place under second state.
According to this embodiment, control module 100 can serve as that lever 161a determine to be switched whether under second state in the basis with the detectable signal from apparatus for detecting pressure 160, and can determine then whether the internal pressure of bellows container 184 is lower than this threshold value.Because bellows container 184 can expand and shrink, so bellows container 184 build pressure therein.
By with reference to figure 14A and Figure 14 B, with the ink-jet printer of describing according to the 4th embodiment, the difference of the 4th embodiment and first embodiment is apparatus for detecting pressure.More specifically, in the 4th embodiment, adopt apparatus for detecting pressure 260 to substitute apparatus for detecting pressure 60.Figure 14 A is the vertical sectional view of apparatus for detecting pressure 260, and Figure 14 B is the cutaway view of the line 14B-14B in Figure 14 A.
Apparatus for detecting pressure 260 comprises the exploration vessel 262 that is arranged in the air hose 19.Exploration vessel 262 is supported by support member 263.In exploration vessel 262, insert openend 19d, the 19e of air hose 19.In exploration vessel 262 inside impeller 261 is set, this impeller 261 has a 261a and a plurality of blade 261b, arranges and fixing described a plurality of blade 261b around axle 261a.Thereby axle 261a is supported in the exploration vessel 262 and can rotates on by arrow A 3 indicated directions.When by suction pump 81 during from air hose 19 suction airs, the air in the exploration vessel 262 is sucked on by arrow A 1 indicated direction, so air flows in the exploration vessel 262 on by arrow A 2 indicated directions.Therefore, the air-flow of generation in exploration vessel 262 from openend 19e to openend 19d.Therefore the air-flow that produces rotates impeller 261 on the direction of A3.
On support member 263, be provided as the optical pickocff of the form of rotation amount probe portion of the present invention.This optical pickocff has light radiating portion 264 and the light receiving part 265 on the opposite side of the blade 261 that is arranged in the exploration vessel 262.Exploration vessel 262 is formed by the material of transmission from the light L of light radiating portion 264 emissions.Impeller 261 is formed by the material of transmitted light L not.When blade 261b was not on the path of light L, light receiving part 265 detected light L.
On the other hand, when any one blade 261 in the blade 261 was on the path of light L, light receiving part 265 was surveyed less than light L.Based on the result of detection of light receiving part 265, calculate blade 261b time per unit and between light radiating portion 264 and light receiving part 265, passed through how many times.Based on the number of times of the blade 261b time per unit process that therefore obtains, calculate the rotation amount of impeller 261 time per units.The rotation amount of impeller 261 time per units is corresponding to the air rate in the exploration vessel 262.Therefore, the result of detection with light receiving part 265 is that the air rate in the exploration vessel 262 can be surveyed in the basis.Impeller 261, light radiating portion 264 and light receiving part 265 cooperations are to constitute the specific gas flow rate detector.The result of detection of light receiving part 265 is output to control module 100.
Can otherwise survey the rotation amount of impeller 261, that is, impeller 261 can be arranged such that the axle 261a of impeller 261 is connected with the encoder of the rotation amount of detection axis 261a.
Control module 100 serves as that following control is carried out on the basis with the result of detection of light receiving part 265.Figure 15 A is meant that being shown in suction pump 81 continues from the time of air hose 19 suction airs and the curve map of the relation between the air rate the exploration vessel 262.Figure 15 B is meant that being shown in suction pump 81 continues curve map via the internal pressure of air in the air hose 19 suction exploration vessels 262 and exploration vessel 262.As in Figure 15 B by curve C 3 indication, when along with from air hose 19 suction airs and the internal pressure of exploration vessel 262 when reducing, the air rate in the exploration vessel 262 is as being changed by curve C 1 indication ground in Figure 15 A.That is, when suction pump 81 began to aspirate, the air rate in the exploration vessel 262 at first increased.Yet during along with the air that carries out from exploration vessel 262 suction, the internal pressure of exploration vessel 262 reduces with air rate.When the internal pressure of exploration vessel 262 is reduced to when being lower than threshold value, air rate also is reduced to the threshold value corresponding threshold that is lower than and is used for internal pressure.
Therefore, when the result of detection with light receiving part 265 serves as that air rate in the exploration vessel 262 is determined when being changed by curve C 1 indication ground in the basis, the suction control section 102 of control module 100 make suction pump 81 continue the air rates of suction air in exploration vessel 262 be reduced to be lower than threshold value till.Like this, can from air chamber 51 suction airs up to the internal pressure of air chamber 51 be reduced to be lower than first predetermined threshold till.
On the other hand, when any one primary tank among the primary tank 5a-5d was empty or exhausts, air flow to exploration vessel 262 from the primary tank of sky via the black 41-44 of locker room, air chamber 51 and air hose 19.Therefore, continue not reduce from exploration vessel 262 suction airs the internal pressure of exploration vessel 262, as by curve C 4 indications, wherein the air rate in the exploration vessel 262 is maintained at as the level place by curve C 2 indications.
Therefore, when the result of detection with light receiving part 265 serves as that the basis determines that air rate in the exploration vessel 262 does not reduce but remains on as by the level place of curve C 2 indications the time, the China ink in any one primary tank that the surplus determining section 103 of control module 100 is determined among the primary tank 5a-5d exhausts.In this case, be that the basis can determine which primary tank exhausts with the result of detection of surplus sniffer 6a-6d and/or the number of times that sprayed ink droplet.
Be similar to graphic processing among Fig. 9 and Figure 10,, can before starting nozzle is safeguarded processing or recording processing, carry out the air chamber suction process based on the result of detection of light receiving part 265.For example, before starting recording processing, record controls part 101 is carried out the air chamber suction process.Only the result of detection with light receiving part 265 be the basis determine air rate in the exploration vessel 262 be reduced to be lower than threshold value after, record controls part 101 just starts recording processing.According to this layout, guarantee that internal pressure at air chamber 51 is reduced to and start recording processing after being lower than first threshold.
After starting recording processing, based on the result of detection of light receiving part 265, control module 100 can be carried out graphic processing in Figure 16.To the processing of Figure 16 be described.After starting recording processing, in step S31, the record controls part 101 of control module 100 determines that stopping recording processing still is not stop recording processing.When record controls part 101 determines that the enrollment ought to be terminated, in step S31, make affirmative determination (being), and the termination flow process.On the other hand, when record controls part 101 determines that recording processing should not be terminated, in step S31, make negative evaluation (denying), and handling process forwards step S32 to continue recording processing till the process scheduled time slot.When determining to have passed through this period, in step S32, make affirmative determination (being), and handling process forwards step S33 to, in this step S33, when record controls part 101 executive loggings were handled, suction control section 102 was carried out the air chamber suction process.In step S34, control module 100 serves as that the basis determines whether the air rate in the exploration vessel 262 is lower than threshold value with the result of detection of light receiving part 265.When control module 100 determines that air rate is lower than threshold value, in step S34, make affirmative determination (being), and record controls part 101 continues the executive logging processing.
On the other hand, when control module 100 determines that air rate is not less than threshold value, in step S34, make negative evaluation (denying), and record controls part 101 interim recording processing of ending in step S35.Simultaneously, suction control section 102 continues air chamber suction process (step S36), and in step S37 once more the result of detection with light receiving part 265 serve as that the basis determines whether the air rate in the exploration vessel 262 is lower than threshold value.When suction control section 102 determines that air rates are lower than threshold value, in step S37, make affirmative determination (being), and handling process forwards step S40 to, in this step S40, record controls partly restarts recording processing, turns back to step S31 then.On the other hand, when suction control section 102 determines that air rate is not less than threshold value, in step S37, make negative evaluation (denying), and handling process forwards step S38 to, in this step S38, surplus determining section 103 determines whether air rate has kept scheduled time slot at a level place.When in step S38, making affirmative determination (being), promptly, when determining air rate and kept scheduled time slot at a level place, surplus determining section 103 determines that any one primary tank among the primary tank 5a-5d exhausts, and handling process forwards step S39 to, in this step S39, control module 100 gives the alarm to the user.In this case, record controls part 101 stops recording processing.On the other hand, when making negative evaluation (denying) in step S38, that is, when determining air rate and do not kept scheduled time slot at a level place, handling process forwards step S36 to, and suction control section 102 continues the air chamber suction process.
Like this, when the internal pressure of air chamber during recording processing 51 was higher than first threshold, recording processing was ended, and internal pressure is returned to rapidly and is lower than first threshold.Because termination recording processing when detecting internal pressure and be not less than first threshold, so, even when detecting internal pressure and be not less than first threshold, also prevent to flow in the head main body 30 owing to lasting recording processing causes air.In addition, when any one primary tank among the primary tank 5a-5d during recording processing exhausted, the user can be informed this fact at once.
With reference to figure 17-19, with the ink-jet printer of describing according to fifth embodiment of the invention, this ink-jet printer is generally by Reference numeral 401 expressions.In Figure 17, the part of the internal structure of the balladeur train 9 of ink-jet printer 401 is indicated by dotted line, still, for the ease of understanding, does not have to illustrate head main body 30, the black 41-44 of locker room and other parts in the bottom that is arranged on balladeur train 9.
The ink-jet printer 401 that is different from ink-jet printer 1, the six embodiment of first embodiment does not comprise pressure restrictor 69, but alternatively comprises pressure control device 90.Be similar to first embodiment, in the present embodiment, when the internal pressure of air chamber 51 was equal to or higher than predetermined first threshold, suction pump 81 was reduced to from air chamber 51 suction airs so that with the internal pressure of air chamber 51 and is lower than first threshold.At this moment, internal pressure that might air chamber 51 excessively is reduced to and is lower than second threshold value, and this second threshold value is lower than first threshold.This of internal pressure that pressure treatment device 90 is operated as described later like that to prevent air chamber 51 excessively reduces.Ink-jet printer 401 also comprises each radiator that all is communicated with pressure control device 90 471 and catches mist device 77.
To describe pressure control device 90, radiator 471 and catch the structure of mist device 77.Figure 18 is that the ink gun 408 of ink-jet printer 401 is at the plane that removes under the state of skull.As shown in Figure 17 and Figure 18, pressure control device 90 is arranged in the secondary container 431, and is arranged on some place in the air duct 52.The inner space of pressure control device 90 is communicated with air duct 52, and is communicated with the inner space of radiator 471 by air hose 75.
Figure 19 A and Figure 19 B are the horizontal cross of pressure control device 90, are formed with pressure controling chamber 91 in the inboard.Pressure controling chamber 91 has three mouth 91a, 91b and 91c.The part on air chamber 51 sides of air duct 52 is communicated with mouth 91a.Another part on suction pump 81 sides of air duct 52 is communicated with a mouthful 91b.Air hose 75 is communicated with a mouthful 91c via valve chamber 93.In pressure controling chamber 91, hold the part of biasing member 94 and valve element 92.Valve element 92 is arranged to extend through connected component, and pressure controling chamber 91 and valve chamber 93 can communicate with each other in this interconnecting part office.Valve element 92 can remain silent in the pass 91c closed position (shown in Figure 19 A) and open between the open position (shown in Figure 19 B) of described mouthful 91c and move.
Biasing member 94 is biased to the closed position with bias force with valve element 92, and this bias force is set for and made valve element 92 move between open position and closed position according to the difference between the internal pressure of pressure controling chamber 91 and valve chamber 93.More specifically, the bias force of setting biasing member 94 makes: when the internal pressure of pressure controling chamber 91 is lower than first threshold and be equal to or higher than than low second threshold value of first threshold, valve element 92 is maintained in its closed position the place, and be reduced to when being lower than second threshold value when the internal pressure of pressure controling chamber 91, valve element 92 moves to open position.That is, as after a while fully as described in, for example, the inner space of valve chamber 93 is open via the space outerpace of catching 77 pairs of ink guns 408 of mist device, and the pressure in the inner space of valve chamber 93 (being the internal pressure of valve chamber 93) remains on atmospheric pressure.When the internal pressure from pressure controling chamber's 91 suction airs and pressure controling chamber 91 is reduced to second threshold value, difference between the internal pressure of valve chamber 93 and pressure controling chamber 91 becomes too greatly causing biasing member 94 the renitency difference valve element 92 not to be maintained in its closed position the place, so valve element 92 moves to open position from the closed position.Like this, when the internal pressure of pressure controling chamber 91 is reduced to when being lower than second threshold value, valve element 92 moves to open position, and air is introduced in the pressure controling chamber 91 by valve chamber 93 from the space outerpace of ink gun 408.This has increased the internal pressure of the air chamber 51 that is communicated with pressure controling chamber 91.When the internal pressure of pressure controling chamber 91 increases and when getting back to the level that is equal to or higher than second threshold value, biasing member 94 operations move to the closed position with the difference between the internal pressure of opposing valve chamber 93 and pressure controling chamber 91 with valve element 92, and therefore close the 91c that remains silent.Like this, a mouthful 91c can switch between open mode and closed condition according to the internal pressure of pressure controling chamber 91.On the other hand, always under open mode, that is, another part on suction pump 81 sides at part on air chamber 51 sides and air duct 52 of air duct 52 crosses or keeps communicating with each other via pressure controling chamber 91 for opening 91a and opening 91b.
As shown in Figure 17 and Figure 18, the ink gun 408 of the 6th embodiment has the radiator 471 that substitutes the radiator 71 that uses in first embodiment.Radiator 471 is formed by metal, and has the shape of roughly cuboid long on auxiliary scanning direction.Be formed with the space 471a that extends along auxiliary scanning direction in radiator 471 inside.Two end opposite places along auxiliary scanning direction at radiator 471 form two openings.An opening in two openings of one end of air hose 75 and space 471a is connected.One end of air hose 76 is connected with another opening of space 471a, and the other end of this air hose 76 is connected with the mist device 77 of catching on the inner surface that is fixed on balladeur train 9.Catch mist device 77 and have inner space 77b, this inner space 77b has opening 77a, and this opening 77a faces the inner space of balladeur train 9, and inner space 77b is communicated with the inner space of air hose 76 by this opening 77a.The thickness that intercommunicating pore 9a passes the sidewall of balladeur train 9 forms with the inner space 77b that catches mist device 77 and is communicated with.Intercommunicating pore 9a is open to the space outerpace of balladeur train 9, that is, open to the space outerpace of ink gun 408.Attached in intercommunicating pore 9a have a filter 78 that is formed by porous material or other material, that is, filter 78 covers sidewall that makes balladeur train 9 and the inner space 77b connected component connected to one another of catching mist device 77.
According to the 6th embodiment, when the internal pressure of the pressure controling chamber 91 of pressure control device 90 is lower than second threshold value, open described mouthful of 91c.Since mouthful 91c by air hose 75, radiator 471 space 471a, air hose 76 and catch mist device 77 and be communicated with the space outerpace of ink gun 408, so, air is introduced in the pressure controling chamber 91 from mouth 91c from the space outerpace of ink gun 408, to increase the internal pressure of air chamber 51.When the internal pressure of the air chamber 51 of such increase is equal to or higher than second threshold value, close the 91c that remains silent, and the internal pressure of pressure controling chamber 91 tops out.Therefore, even be reduced to when being lower than second threshold value when the internal pressure of air chamber 51, for example because the excessive suction of air chamber 51 during the air chamber suction process, pressure control device 90 is also operated with the space outerpace from ink gun 408 and is introduced air.Therefore therefore, prevented that the internal pressure of air chamber 51 from excessively reducing, prevented to apply excessive load being arranged on the ventilative film 53 of interconnecting part office that air chamber 51 and the black 41-44 of locker room communicate with each other in this interconnecting part office.Therefore, prevented otherwise the disengaging and the damage of the ventilative film that can cause by the over load that is applied on the ventilative film.
According to pressure control device 90, when opening described mouthful of 91c, air is inhaled into by catching mist device 77 from the space outerpace of ink gun 408.The filter 78 of porous material is attached in to make catches the interconnecting part office that mist device 77 is connected with the sidewall of balladeur train 9.When record operating period when nozzle 30a sprays ink droplet, a large amount of small ink droplets may swim in around the ink gun 408, in other words, so-called " ink mist " may take place.When ink mist entered ink gun 408 and contact circuit or other parts, short circuit or the fault of jet actuator 30b can take place.Yet according to the 6th embodiment, when air was inhaled into by catching mist device 77, ink mist reduced swimming in ink gun 408 ink mist on every side thus along with air is inhaled into together.In addition, make the filter 78 seizure ink mists of catching the interconnecting part office that mist device 77 is connected with the sidewall of balladeur train 9 owing to be attached in, so prevented the obstruction that the space 471a of air hose 75 or radiator 471 wherein causes owing to the ink mist inflow.Owing to use by the suction of suction pump 81 and catch ink mist, be exclusively used in the suction pump of catching ink mist so needn't be provided with.
When opening, described mouthful 91c passes through space 471a in the radiator 471 then by catching air that mist device 77 is introduced into.Therefore, the heat that has been delivered to radiator 471 from drive circuit board 73 is absorbed or has been removed from radiator 471 through the air stream of space 471a.Because space 471a forms along the bearing of trend (being auxiliary scanning direction) of drive circuit board 73, so remove the heat that generates by drive circuit board 73 effectively.In addition, reduce phlegm and internal heat to remove owing to use, so the suction pump that is exclusively used in cooling radiator 471 needn't be set from radiator 471 by the suction of suction pump 81.
Feasible is: ongoing operation suction pump 81, so that continue cooling radiator 471 and catch ink mist by catching mist device 77.
In the 6th embodiment, pressure controling chamber 91 is communicated with via mouth 91c and radiator 471 and the inner space of catching mist device 77, more specifically, is communicated with the space 471a of radiator 471 and the inner space 77b that catches mist device 77.Yet only inner space that it can be modified in the inner space that makes pressure controling chamber 91 and radiator 471 and catch mist device 77 is communicated with, and perhaps is not communicated with these inner spaces.Pressure controling chamber 91 not with all disconnected situation in these inner spaces under, pressure controling chamber 91 is only open to the space outerpace of pressure control device 90.
In addition, it can be modified and make in the 6th embodiment the end that is communicated with space 471a radiator 471 air hose 75 not be and space 471a is communicated with, and be arranged on radiator 471 the surface near.
In first to the 6th embodiment, single suction pump 81 can carry out that nozzle maintenance is handled and the air chamber suction process the two.Yet each processing that can be in nozzle maintenance processing and the air chamber suction process all provides suction pump.
It is feasible that surplus in first to the 6th embodiment determines that processing can be modified: in surplus is determined to handle, only, only determine whether that at least one primary tank among the primary tank 5a-5d exhausts based on the result of detection of apparatus for detecting pressure 60,160,260,360.
In first to the 6th embodiment, can handle after air chamber 51 abundant suction airs, starting flushing, determine the fact based on the result of detection of apparatus for detecting pressure 60 from air chamber 51 abundant suction airs.
In the above-described embodiments, single ventilative film 53 is attached to cover all intercommunicating pore 41a-44a.Yet, attachable two or more ventilative films.For example, it can be arranged such that: attached four ventilative films are to cover each intercommunicating pore 41a-44a.
In the above-described embodiments, secondary container 31 has container body 31b and cover component 31c.Yet container body 31b and cover component 31c can be integrally formed.
The ink-jet printer of the foregoing description is the type that head main body 30 and secondary container 31 move together along with balladeur train 9.Yet ink-jet printer can be the type that ink gun is secured in place.
In addition, the present invention is applicable to the equipment except ink-jet printer,, sprays the equipment of all kinds liquid that is not China ink that is.For example, the present invention is applicable to the equipment that is used for colored coating liquid that uses in the production of the filter of liquid crystal indicator.As the method for spraying energy is provided for the China ink in the head main body 30, can adopt by the use of thermal means.
In the above-described embodiments, check-valves 83,183 is set and keeps below first threshold with internal pressure with air chamber 51.Yet, substitute check-valves 83,183, can the opening and closing device that can disconnect and be based upon the connection between suction pump 81 and the air chamber 51 be set in the suction channel between suction pump 81 and air chamber 51.For example, this opening and closing device can be arranged in the connected component, suction pump 81 and communicate with each other in this interconnecting part office as the air hose 16 of the part of suction channel.When suction pump 81 during from air chamber 51 suction airs, the control opening and closing device is communicating with each other suction pump 81 and air chamber 51, and when suction pump 81 stops from air chamber 51 suction airs, the control opening and closing device is with the connection between disconnection suction pump 81 and the air chamber 51.
Therefore, even after suction pump 81 stops suction, the internal pressure of air chamber 51 also is held and is lower than threshold value.
In the above-described embodiments, secondary container 31 is installed on the balladeur train 9.Yet it can be modified and make secondary container 31 not be installed on the balladeur train 9, and is arranged on some place in the ink-feed channel between primary tank 5a-5d and the balladeur train 9.Although in the above-described embodiments, air chamber 51 suction airs of suction pump 81 from be formed on secondary container 31, but the suction channel of suction pump 81 (promptly with the corresponding suction channel of first suction channel of the present invention) can be connected to ink-feed channel so that from the ink-feed channel suction air at any some place between primary tank 5a-5d and head main body 30.
Be connected to the example of ink-feed channel at the some place except secondary container as the suction channel of wherein suction pump 81, with reference to Figure 20 and Figure 21, with the ink-jet printer of describing according to a sixth embodiment of the invention.Figure 21 is the vertical sectional view of the line 21-21 in Figure 20, and illustrate black chamber 141 and it near.The black chamber 142-144 that does not have diagram to have the vertical cross-section identical with the vertical cross-section of black chamber 141.As shown in Figure 20, wherein Reference numeral 1000 is generally represented the ink-jet printers of the 7th embodiment, and air jet system 190 is arranged between primary tank 5a-5d and the China ink pipe 14a-14d.In air jet system 190 inside, form black chamber 141-144 and air chamber 151.As seeing among Figure 20, China ink pipe 14a-14d is communicated with black chamber 141-144 at the place, top of air jet system 190.Primary tank 5a-5d is communicated with black chamber 141-144 via each China ink pipe 15a-15d.China ink in primary tank 5a-5d manages 15a-15d, black chamber 141-144 via China ink and China ink pipe 14a-14d supplies to secondary container 31.
As shown in Figure 21, black chamber 141 is connected with China ink pipe 14a by open communication 141a at its left end place, and is connected with China ink pipe 15a by open communication 141b at its right-hand member place.
Similarly, black chamber 142-144 is connected with China ink pipe 14b-14d and China ink pipe 15b-15d.As shown in Figure 20, air chamber 151 extends across black chamber 141-144 above black chamber 141-144.Air chamber 151 is connected with air hose 19 by intercommunicating pore 152, and air chamber 151 and charge cask 84 are connected to each other by air hose 19.As seeing among Figure 20, intercommunicating pore 152 is arranged on the right-hand member place of air jet system 190.
As shown in Figure 20 and Figure 21, each ventilative film 153a-153d is set in the interconnecting part office, black chamber 141-144 is communicated with air chamber 151 respectively at these connected component places.
As shown in Figure 20, ventilative film 153a-153d is arranged in the plane overlapping with black chamber 141-144, and constitutes the wall that black chamber 141-144 is separated with air chamber 151.In the present embodiment, be provided for the ventilative film of each the black chamber among the black chamber 141-144.Yet it can be modified and make single ventilative film be arranged to extend across black chamber 141-144.
According to the air jet system 190 of present embodiment, the air among the black chamber 141-144 is ejected into air hose 19 from air chamber 151 then by being injected into air chamber 151 through ventilative film 153a-153d.In the present embodiment, extend to the air duct of suction pump 81 or suction channel corresponding to first suction channel of the present invention by air hose 19, charge cask 84 and air hose 18 from air chamber 151.
Although described several embodiments of the present invention, but should be understood that the present invention is not limited to the details of embodiment, but under the situation that does not depart from the scope and spirit of the present invention that are defined by the following claims, various modification and improvement that the present invention can otherwise can be expected by those skilled in the art are implemented.

Claims (19)

1. liquid-droplet ejecting apparatus comprises:
Have the jet head liquid that sprays opening, spray the opening liquid droplets from this;
Liquid supply passage, liquid supplies to jet head liquid by this liquid supply passage;
First suction channel that common maintenance is communicated with liquid supply passage;
Aspirator via the gas in this first suction channel pumping liquid feed path;
Be arranged on the ventilative film of interconnecting part office, the liquid supply passage and first suction channel communicate with each other in this interconnecting part office, and this ventilative film allows gas by this ventilative film, but does not allow liquid to pass through this ventilative film;
Gas container, this gas container are arranged in the part between aspirator and liquid supply passage of first suction channel, and hold gas to gather the swabbing pressure that is used for intake-gas; With
Check-valves, this check-valves is arranged in the part between aspirator and gas container of first suction channel, and allow gas on first direction, to flow to aspirator, but do not allow gas on the second direction opposite, to flow with first direction from liquid supply passage.
2. equipment according to claim 1, wherein said check-valves comprises the valve element, poor according between pressure of doing from the aspirator side to be used for and the pressure doing to be used for from the liquid supply passage side, this valve element can and be closed between the closed position of described first suction channel and move at the open position of opening described first suction channel.
3. equipment according to claim 1 also comprises:
Spray the opening capping apparatus, this injection opening capping apparatus comprises block, this block can be with respect to described jet head liquid at the tight described jet head liquid of contact so that the covering position of the described injection opening of airtight covering and open between the uncovering position of described injection opening and move;
Second suction channel with two opposite ends, an end in these two opposite ends is communicated with the inner space of block, and described aspirator another end aspiration gas from these two opposite ends;
Switching device shifter, this switching device shifter optionally are connected aspirator and first suction channel with a suction channel in second suction channel; With
The suction controller, this suction controller control is sprayed opening capping apparatus, aspirator and switching device shifter and is sprayed the opening suction process so that carry out, spray in the opening suction process at this, aspirate liquid the described jet head liquid from described injection opening and via this second suction channel, and should aspirate controller control aspirator and switching device shifter so that carry out the passage suction process, in this passage suction process, from described liquid supply passage via the described first suction channel intake-gas.
4. equipment according to claim 3, also comprise apparatus for detecting pressure, whether the internal pressure that this apparatus for detecting pressure is surveyed described first suction channel is lower than first predetermined threshold, and the result that wherein said suction controller is surveyed with this apparatus for detecting pressure serves as that at least one device in described injection opening capping apparatus, described aspirator and the described switching device shifter is controlled on the basis.
5. equipment according to claim 4,
Wherein said first suction channel has pipe, and at least a portion of this pipe is formed by elastomeric material,
Wherein said apparatus for detecting pressure comprises being detected member and surveying this and be detected the sensor whether member is positioned at predetermined detecting location place of described at least a portion setting of contiguous this pipe,
And wherein when the internal pressure of this pipe was high relatively, this tube swelling was to promote to be detected member towards this detecting location.
6. equipment according to claim 4 also comprises:
Liquid container, liquid supplies to described liquid supply passage from this liquid container; With
The surplus determining section, when the internal pressure that detects described first suction channel when described apparatus for detecting pressure is not less than described first predetermined threshold, this surplus determining section makes described suction controller carry out described passage suction process, after described suction controller is carried out described passage suction process, when the internal pressure that detects described first suction channel once more when described apparatus for detecting pressure was not less than described first predetermined threshold, the surplus determining section determined that liquid container is empty.
7. equipment according to claim 6, comprise a plurality of described liquid containers and a plurality of surplus sniffer, described a plurality of surplus sniffer is set on each liquid container, so that whether the amount of liquid of surveying in each liquid container is lower than near zero threshold value, and when wherein the internal pressure that detects described first suction channel when described apparatus for detecting pressure is not less than described first predetermined threshold, described surplus determining section makes described suction controller carry out described passage suction process, when the internal pressure that still detects described first suction channel when described apparatus for detecting pressure after described suction controller has been carried out described passage suction process is not less than described first predetermined threshold, and a corresponding surplus detection of the liquid container with in the described liquid container in the described surplus sniffer is when remaining amount of liquid is lower than this threshold value in a described liquid container, and described surplus determining section determines that a described liquid container is empty.
8. equipment according to claim 4, wherein said apparatus for detecting pressure comprises the specific gas flow rate detector of surveying the specific gas flow rate in described first suction channel, when described aspirator during via the described first suction channel intake-gas, the specific gas flow rate that described apparatus for detecting pressure detects with this specific gas flow rate detector is the internal pressure that described first suction channel is surveyed on the basis.
9. equipment according to claim 8, wherein said specific gas flow rate detector comprise the rotation amount probe portion of the rotation amount of impeller that rotates according to the gas flow in described first suction channel and the time per unit of surveying this impeller.
10. equipment according to claim 8, wherein said suction controller continues described passage suction process, up to described specific gas flow rate detector detect specific gas flow rate be lower than be used for the described first predetermined threshold corresponding threshold of described internal pressure till.
11. equipment according to claim 8 also comprises:
Liquid container, liquid supplies to described liquid supply passage from this liquid container; With
Determine to remain in the surplus determining section of the amount of liquid in this liquid container,
Although and wherein continue via the described first suction channel intake-gas when but the specific gas flow rate as described in described first suction channel that detects of specific gas flow rate detector did not reduce, this surplus determining section determined that liquid container is empty when described aspirator.
12. according to each described equipment in the claim 4 to 11, wherein said suction controller comprises that spraying the opening suction allows part, when the internal pressure that detects described first suction channel when described apparatus for detecting pressure was lower than described first predetermined threshold, this sprayed opening suction and allows part to allow to carry out described injection opening suction process.
13. equipment according to claim 12, when wherein the internal pressure that detects described first suction channel when described apparatus for detecting pressure was not less than described first predetermined threshold, described suction controller control was to carry out described passage suction process before described injection opening suction process.
14. according to each described equipment in the claim 4 to 11, wherein said first suction channel comprises pressure restrictor, when the internal pressure in described first suction channel was reduced to than low second predetermined threshold of described first predetermined threshold, this pressure restrictor was closed described first suction channel.
15. equipment according to claim 14, wherein said pressure restrictor comprises the part of described first suction channel, when the internal pressure of described first suction channel is reduced to described second predetermined threshold, flatten in the internal pressure of this part of described first suction channel and this part of described first suction channel of the official post between the external pressure, so that close described first suction channel.
16. according to each described equipment in the claim 1 to 3, comprise also whether the internal pressure of surveying described first suction channel is lower than the apparatus for detecting pressure and the recording controller by come executive logging to handle from described injection opening liquid droplets of first predetermined threshold, this recording controller comprises that record allows part, when the internal pressure that detects described first suction channel when this apparatus for detecting pressure was lower than described first predetermined threshold, this record allowed part to allow to carry out this recording processing.
17. equipment according to claim 16, when wherein the internal pressure that detects described first suction channel when described apparatus for detecting pressure is not less than described first predetermined threshold, before described recording controller began described recording processing, described suction controller made described aspirator from described liquid supply passage intake-gas.
18. according to each described equipment in the claim 4 to 11, also comprise recording controller by come executive logging to handle from described injection opening liquid droplets, this recording controller comprises that record allows part, when the internal pressure that detects described first suction channel when this apparatus for detecting pressure was lower than described first predetermined threshold, this record allowed part to allow to carry out this recording processing.
19. equipment according to claim 18, when wherein the internal pressure that detects described first suction channel when described apparatus for detecting pressure is not less than described first predetermined threshold, before described recording controller began described recording processing, described suction controller made described aspirator from described liquid supply passage intake-gas.
CN2008101095588A 2007-05-31 2008-06-02 Liquid-droplet ejecting apparatus Active CN101314284B (en)

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Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4941483B2 (en) * 2009-02-25 2012-05-30 ブラザー工業株式会社 Damper device
EP2404760B1 (en) 2009-03-05 2018-08-08 SII Printek Inc Pressure buffer, liquid jetting head, liquid jetting recording device, and method for buffering pressure
JP5359454B2 (en) * 2009-03-27 2013-12-04 セイコーエプソン株式会社 Liquid ejector
JP5321969B2 (en) * 2009-07-30 2013-10-23 株式会社リコー Image forming apparatus
US8449053B2 (en) * 2009-09-28 2013-05-28 Seiko Epson Corporation Liquid ejecting apparatus and liquid charging method
JP5633179B2 (en) 2010-04-30 2014-12-03 ブラザー工業株式会社 Cap device
JP5825908B2 (en) * 2011-07-29 2015-12-02 キヤノン株式会社 Liquid ejection device
JP5756707B2 (en) * 2011-08-02 2015-07-29 株式会社ミマキエンジニアリング Ink supply apparatus and printing apparatus including the ink supply apparatus
JP2013052636A (en) * 2011-09-06 2013-03-21 Seiko Epson Corp Liquid ejection apparatus
CN102423966A (en) * 2011-10-11 2012-04-25 江苏锐毕利实业有限公司 Method and system for cleaning spray nozzle of rigid printed circuit board
JP5943858B2 (en) * 2013-02-22 2016-07-05 ローランドディー．ジー．株式会社 Cleaning liquid supply mechanism
JP6098464B2 (en) 2013-09-30 2017-03-22 ブラザー工業株式会社 Liquid ejection device
JP6459594B2 (en) * 2015-02-13 2019-01-30 セイコーエプソン株式会社 Droplet discharge device
EP3230067B1 (en) 2015-04-20 2020-01-29 Hewlett-Packard Development Company, L.P. Aerosol control in a printer
WO2017012637A1 (en) 2015-07-17 2017-01-26 Hewlett-Packard Development Company, L.P. Suction force calibration
EP3326033B1 (en) * 2015-07-31 2022-02-16 Hp Indigo B.V. Generating mixed ink in a printing press
JP6613848B2 (en) * 2015-11-26 2019-12-04 セイコーエプソン株式会社 Liquid ejecting apparatus and liquid ejecting method
JP6679900B2 (en) * 2015-12-01 2020-04-15 セイコーエプソン株式会社 Liquid ejector, pressure regulator
CN107020818B (en) 2016-02-02 2020-05-29 精工爱普生株式会社 Liquid ejecting unit, method of driving the same, and liquid ejecting apparatus
JP6859692B2 (en) * 2016-12-13 2021-04-14 セイコーエプソン株式会社 Liquid injection device
JP7172624B2 (en) * 2019-01-16 2022-11-16 セイコーエプソン株式会社 liquid injector
CN111559175A (en) * 2019-02-14 2020-08-21 海德堡印刷机械股份公司 Method for degassing water-based inks

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0679881A (en) * 1992-09-01 1994-03-22 Canon Inc Ink-jet recording device
JP2000301732A (en) * 1999-04-19 2000-10-31 Canon Inc Ink jet recording apparatus
JP2002052737A (en) * 2000-08-10 2002-02-19 Seiko Epson Corp Ink-jet recording device and method for controlling supply of pressured air to ink cartridge in the device
JP2002192743A (en) * 2000-12-27 2002-07-10 Canon Inc Ink jet recorder
JP2002331233A (en) * 2001-05-08 2002-11-19 Seiwa Kagaku:Kk Ozone water making apparatus
JP2006327097A (en) * 2005-05-27 2006-12-07 Olympus Corp Ink jet recording device
JP4677296B2 (en) * 2005-06-24 2011-04-27 キヤノン株式会社 Recording device

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CN101314284A (en) 2008-12-03
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ATE452763T1 (en) 2010-01-15
ATE457874T1 (en) 2010-03-15
JP5217338B2 (en) 2013-06-19
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CN101314283A (en) 2008-12-03
JP4935603B2 (en) 2012-05-23

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