CN1023094C - Ink jet apparatus - Google Patents
Ink jet apparatus Download PDFInfo
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- CN1023094C CN1023094C CN 91102110 CN91102110A CN1023094C CN 1023094 C CN1023094 C CN 1023094C CN 91102110 CN91102110 CN 91102110 CN 91102110 A CN91102110 A CN 91102110A CN 1023094 C CN1023094 C CN 1023094C
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Abstract
An ink jet recording apparatus includes ink ejecting outlets for ejecting ink, an ink container for containing the ink to be supplied to the ejecting outlets, ink supply passage for supplying the ink from the container to the ejecting outlets, a recovery system for forcedly ejecting the ink through the ejecting outlets. The recovery system repeats the forced ejecting action, and a quantity of the ink ejected by one forced ejecting action is larger than an inside volume of the ink supply passage.
Description
The present invention relates to have a record head and an ink mist recording head bracket, provide the ink sprayer (displacer) of ink-jet (discharge) usefulness on this record head, also relate to the ink jet recording device that has carriage as holistic print cartridge.
Traditional ink jet recording device generally belongs to one of following type:
(1) it comprises non-interchangeable record head and print cartridge separately, and they connect by the ink supply pipe.
(2) it comprises non-interchangeable record head separately and interchangeable print cartridge, and they connect by the China ink pipe.
(3) it comprises a changeable type record head with record head and print cartridge, and record head and print cartridge are as a whole, thereby record head is releasably attached on the recording equipment.
First kind and second type in above-mentioned these types is that record head is fixed on the equipment, the work that needs repairing when therefore breaking down right overhead, and the result can not use for a long time.
In first and second types, China ink is provided by print cartridge by the ink supply pipe, brings following problems:
Wish when (1) making record head that its working life and reliability are long, the result has just increased manufacturing cost.
(2) need the ink supply pipe, the result increases cost.In continuous sweep type equipment, the record head carriage moves back and forth, and black pipe must so just need bigger space along with this carriage.
(3) air can be input in the ink supply pipe with comparalive ease, if this situation takes place, flowing of printing ink just is interfered, and the input of air may cause the ejection failure of record head.When air or analog is imported in the ink supply pipe or ink supply pipe when lacking China ink, if as usual then China ink be forced to discharge by ejiction opening so that recovery operation.For this recovery operation, just need a jumbo pump, equipment size just is difficult to reduce as a result.In addition, a large amount of China inks is discharged by the record operation, thereby operating cost is higher.
In second type, particularly when changing ink cartridge carrier, have air to be input into the possibility of ink supply pipe, so the problems referred to above (3) are noticeable.
So the record head of the third type is from the viewpoint that helps avoiding the problems referred to above because size is little, but the low and non-life cycle of cost reduce, the third type is desirable.
With reference to Fig. 1, shown in here is a sectional drawing that has the bracket type ink jet print head example of whole print cartridge.
Fig. 2 is the three-dimensional cross-section diagram of another bracket type ink jet print head embodiment.This comprises the sheet 400a and the print cartridge that constitute ink ejector.Sheet 400a has and China ink sprays (discharges) and exports the 111 black roads that are communicated with.In this passage, provide energy-producing element, the energy that this element produces helps ink-jet (for example causing the electrothermal transducer of oil film evaporating).Common ink chamber 401a communicates with Mo Dao, and supplies with printing ink by ink-feed channel 1600a by print cartridge 1000.Provide pore 1000a in the print cartridge.
Junction between a sheet 400a and print cartridge 1000 provides screen pack 700, so that the input steam bubble or the impurity that prevent to exist in the print cartridge 1000 enter in the sheet 400a.Because the reason of being convenient to make, when the print cartridge 1000 that separates and a sheet 400a were joined together, filter 700 was fixed.
Yet still there is the described problem of hypomere in the record head with this kind structure.
When owing to print cartridge 1000 in the vacuum balance be interfered the meniscus that makes the ejiction opening place when disappearing, might make the China ink in this zone leave ejiction opening 111 towards common ink chamber 401a direction, the China ink that is provided by print cartridge 1000 is stopped then.So because vacuum appears in the absorber 900 in the print cartridge 1000, the printing ink among the black road 1600a is retracted back into a kind of like this degree by direction shown in the arrow a, that is: makes printing ink be absorbed material 900 fully and absorb through filter 700.
If independent record head or be installed in record head on the recording equipment and lie on the table and do not use for a long time, because the evaporation of the solvent of printing ink and gas decompose, in printing ink, can produce a steam bubble or a plurality of steam bubble, if it is further shelved obsolete words, evaporation even can proceed to a kind of like this degree, promptly steam bubble increases and the China ink in ink-feed channel 1600a is discharged.If steam bubble is stuck in the black road 401, then Mo supply is disturbed, and ink-jet as a result is just undesired.In order to avoid above-mentioned this situation to take place by allowing evenly to produce steam bubble in the printing ink of being supplied with, the cross section of ink-feed channel is made into big.The result of making is that the black road internal volume of ink jet print head becomes big like this, then just need a jumbo sucking pump so that when since for a long time need not or because printing ink flows out when making ink sprayer 400a inside lack China ink, can make and aspirate recovery.
If the capacity of pump is little, might aspirate printing ink at the middle part in record head China ink road, yet be not enough like this, because because absorbing material 900 is a vacuum, and China ink is retracted, even the operation of result's repeat aspiration, record head can not be full of China ink yet.
Recently, a kind of small-sized portable ink jet recording device becomes commercialized.Especially on this small records equipment, be difficult to solve the problem that this big volumetric pump took up space of using.In addition, even it is if possible, because a large amount of consumption of China ink, manufacturing cost and operation energy consumption all can increase.
Even therefore main purpose of the present invention provides the ink jet recording device that a kind of use small size sucking pump also can be full of printing ink at Mo Daozhong.
Another object of the present invention provides a kind of undersized ink jet recording device.
Further aim of the present invention provides a kind of ink jet recording device cheaply.
A further object of the present invention provides a kind of ink jet recording device of low running energy consumption.
Consider following most preferred embodiment of the present invention in conjunction with the accompanying drawings, above-mentioned these and other purpose, characteristics and advantage of the present invention will be seen clearlyer.
Fig. 1 is the profile of record head.
Fig. 2 is the profile of record head, and wherein a part of printing ink flows out.
Fig. 3 A is the decomposition diagram of the concrete ink-jet carriage embodiment of the present invention.
Fig. 3 B is the perspective view of the concrete ink-jet carriage of the present invention.
Fig. 4 is the perspective view of the print cartridge of the ink mist recording carriage when the ink jet print head angle that is contained in the side is seen.
Fig. 5 is the top plan view that is installed in the ink-jet carriage on the ink jet recording device master component carriage.
Fig. 6 is the perspective view of ink jet recording device.
Fig. 7 A and 7B are the perspective view of explanation ink feeding system.
Fig. 7 C is the partial cut-away elevation view of the ink feeding system of the concrete ink discharge device of the present invention.
Fig. 8 is the partial cross sectional side elevation view of ink jet recording device embodiment.
Fig. 9 is the decomposition diagram of recovery system of the present invention, and this recovery system comprises a sucking pump, and it is one forces ink discharging device.
Figure 10 is the profile of recovery system of the present invention, and this system comprises a sucking pump, and it is one forces ink discharging device.
Figure 11 A, 11B and 11C were illustrated in during just spray cycle, topped cycle and recovery suction and pumping cycle, the plane of the position relation between record head and the effect element thereon.
Figure 12 A, 12B and 12C are the side view of the continuous operation situation when showing topped according to the order of sequence the operation.
Figure 13 A and 13B are the profile that shows the operational circumstances of suction and pumping pump.
Figure 14 A, 14B and 14C be ink-jet carriage of the present invention under normal circumstances, the profile under printing ink discharge situation and under the situation of printing ink deficiency, shown in the ink-jet carriage fill the China ink situation.
Figure 15 is pump suction and pumping operating periods, the curve map of vacuum and time relationship in the pump.
Figure 16 A, 16B and 16C be ink-jet carriage of the present invention under normal circumstances, finish suction and pumping operation time and discharging cutaway view under the situation of China ink.
Figure 17 is the fragmentary cross-sectional view according to the ink jet print head of an alternative embodiment of the invention.
Figure 18 A and Figure 18 B are the profile according to the critical piece of the ink jet print head of an alternative embodiment of the invention.
Figure 19 is the partial sectional view according to the critical piece of the ink jet print head of another embodiment of the present invention.
Figure 20 is the part sectioned view according to the critical piece of another embodiment of the present invention.
Figure 21 is the profile according to the record head that has whole print cartridge of another embodiment of the present invention.
Figure 22 is the profile of assembling situation that shows the record head of Figure 21.
Figure 23 is the perspective view that shows its profile.
Figure 24 and Figure 25 are perspective view and the top plan view that shows the mounting portion of the recording equipment that is used for the receiving record head among Figure 23.
Figure 26 is the perspective view according to the ink jet recording device of another embodiment of the present invention.
Figure 27 and 28 is the profile according to the record head of an alternative embodiment of the invention.
Fig. 3 A, 3B, 4,5 and 6 have shown according to the ink discharge device IJU of the ink jet recording device of one embodiment of the present of invention, ink gun IJH, print cartridge IT, ink-jet carriage IJC, headstock HC and master component IJRA and the relation between them.The structure of each element will be described below:
As will recognizing from the perspective view of Fig. 3 A, the ink-jet carriage IJC among this embodiment has bigger space, and the end of ink discharge device IJU is outstanding from the leading flank of print cartridge IT a little.By suitable positioner, ink-jet carriage IJC can be installed on the correct position of carriage HC Fig. 5 of ink jet recording device master component IJRA and with electrically contact, this names a person for a particular job and is described in detail hereinafter.In other words in this embodiment, one arbitrarily type of service the head be removably mounted on the carriage AC.The structure that is disclosed among Fig. 3 A-6 has a lot of novelties, and it will at first briefly be narrated.
(1) ink discharge device IJU:
This ink discharge device IJU belongs to a kind of ink mist recording type of using thermoelectric sensor, and thermoelectric sensor wherein produces heat energy according to the signal of telecommunication, causes the oil film evaporating of China ink.
With reference to Fig. 3 A, this device comprises a heater plates 100 that has thermoelectric sensor (heating element), and sensor wherein in a row is placed on the silicon chip.Electric lead is made by aluminium or analog so that electric energy is provided to the there.Thermoelectric sensor and electric wire are made by the forming technology of filming, wiring board 200 is connected with heater plates 100, and contain the circuit corresponding (for example by wire bonds technology connect) with the lead of heater plates 100, pad 201 is positioned at the end of circuit, in order to receive the signal of telecommunication there from the recording equipment master component.
Have groove on the top board 1300, this groove has determined to be used for the next door of space between adjacent China ink road and public sap cavity, and this sap cavity is used to admit the printing ink that is supplied on the black separately road.Top board 1300 be used for receiving the printing ink supplied with by print cartridge IT and printing ink directed into the printing ink jet hole 1500 in public chamber and integrally be shaped with orifice plate 400 with a plurality of ejiction openings corresponding to black road.The material of integral die is polysulfones preferably.But also can be other pattern resin material.
In addition, support component 300 has a hole 320, and it will be narrated hereinafter by this hole ink supply pipe 2200() pierced into so that from the print cartridge ink supply.Wiring board 200 is fixed on the support component 300 by binding agent or analog, and support component 300 has recess 2400 and 2400 in the place near locator protrusions 2500 and 2600.
Shown in Fig. 3 B, the ink-jet carriage IJC that assembles has the head of a ledge, has a plurality of parallel slots 3000 and 3001 on three sides of ledge.Recess 2400 and 2400 is positioned on the extension of parallel slot of top side and bottom side, so that stop China ink or impurity to move to projection 2500 and 2600 along groove.As shown in Figure 5, the covering 800 that has a parallel slot 3000 constitutes shell of ink-jet carriage IJC and cooperates the space of having determined to hold ink discharge device IJU with print cartridge.The ink supply portion 600 that has parallel slot 3001 has a printing ink conduit 1600 that links to each other with above-mentioned ink supply pipe 2200, and is got up by cantilever in ink supply pipe 2200 sides.In the capillarity of fixation side, inserted a link block 602 in order to ensure black conduit 1600 and ink supply pipe 2200.
In this embodiment, connection status can obtain by the sealed binder that flows from the ink supply component side under the situation of pressure contact undoubtedly simply fully.In the hole 1901 and 1902 on the pin (not shown) reeve support component 300 at ink supply portion 600 back sides, and pin is passed the back side of support component 300 and heat fusing is carried out in that zone of stretching out, and ink supply element 600 can be fixed on the support component 300 in this way.Outstanding a little zone by heat fusing is admitted by the recess (not shown) in the ink discharge device (IJU) of the installation side of print cartridge IT.Therefore, device IJU can correctly locate.
(ⅱ) print cartridge IT:
Print cartridge comprises main body 1000, blotting material and cover piece 1100.Blotting material 900 inserts the main body 1000 from the side relative with the installation side of device IJU, and this back cover member 1100 has been sealed main body.
In this embodiment, printing ink can provide by an air ventilation holes and this ink supply aperture.For ink supply better, on the medial surface of main body 1000, be formed with ribs 2300, ribs 2301 and 2302 is formed on the medial surface of cover piece 1100, in print cartridge, provide effectively like this one from air ventilation holes to the ink-covered area of depositing from the continuous extension of ink supply aperture 1200 main body angular region farthest.Therefore in order to distribute printing ink equably by intact order, preferably printing ink provides by supply hole 1200.This ink supply method has actual effect.The number of ribs 2300 is 4 in this embodiment, and rib 2300 extends with the moving direction of carriage at the rear side near toner cartridge main body with paralleling, has so just prevented that absorbing material 900 from closely contacting with the back inner surface of main body.Rib 2301 and 2302 is formed on the inner surface of cover piece 1100, being positioned at actual is on the extended position of rib 2300, if yet rib separates, opposite with big rib 2300, rib 2301 and 2302 size are little, exist space big so that have rib 2301 and than air with ribbing at 2300 o'clock at 2302 o'clock.Rib 2302 and 2301 is distributed on the whole surface of cover piece 1100, and its area is not more than half of the gross area.Because ribs is provided, can reposefully, insurance supply to the porch by capillarity at printing ink from ink supply aperture 1200 blotting material angular region farthest.Carriage provides air ventilation holes, being communicated with between the inside that it is used for carriage and the air of outside.Have waterproof material 1400 in the inside of air vent 1400, let out by air vent 1400 so that prevent the printing ink of the inside.
The space that holds printing ink in the print cartridge IT comes down to a cuboid, and the face on long limit is on the carriage moving direction, and therefore the arrangement of above-mentioned ribs is effective especially.When long face when the moving direction of carriage extends, perhaps when containing black space when being three-dimensional form, ribs preferably is formed on the total inner surface of cover piece 1100, so that supply with printing ink reposefully from absorption of inks material 900.Determine cubical profile preferably from limited space, holding the viewpoint of printing ink as much as possible, yet should be formed on two surfaces that constituted an angle from the rib that the existing parts with the minimum in the print cartridge use the viewpoint of printing ink to provide.
In this embodiment, the rib 2301 and 2302 of print cartridge IT the inside is to be evenly distributed on the thickness direction of the blotting material with cuboid profile basically.Because when the China ink in the blotting material is consumed, be zero on the unavailable black quality entity that the gas pressure distribution in the print cartridge evenly consequently is left, therefore a kind of like this structure is significant.Preferably rib is arranged from the teeth outwards or is arranged on the circular arc of outside, surface, the projection position place of the center of this arc on the ink supply aperture on the end face of rectangle blotting material 1200, and the radius of arc equals rectangular long limit.Since then, for the blotting material that is present in the circular arc outside, extraneous air pressure is just promptly set up.If extraneous air be input to be arranged with rib local time all right, the position of the passage of print cartridge IT just is not subjected to the restriction of this embodiment.
In this embodiment, the back of ink-jet carriage IJC is flat, in the time of therefore in being installed in equipment, and needed space minimum, and kept maximum black capacity simultaneously.Therefore the size of equipment can reduce, and the frequency of carriage replacing simultaneously will be reduced to minimum level.Utilize the dead zone, rear portion in space to make ink discharge device IJU integrated, this ledge is as air passage 1401.The inside of this ledge comes down to empty, and empty zone 1402 is played air is infeeded effect among the print cartridge IT by the absorbing material thickness direction equably.Because above-mentioned these characteristics, this carriage generally speaking has preferable performance than traditional carriage, and air is supplied with space 1402 than big many of the air supply space in conventional bracket.In addition, air ventilation holes 1401 is in the position on top, and therefore, if because some reason or other reason printing ink leave absorbing material, air is supplied with space 1402 can temporarily preserve China ink, so that sucked back the entering in the absorbing material of these China inks.The waste waste of printing ink can be saved thus.
With reference to Fig. 4, represent the surface texture of print cartridge IT here, device IJU is installed on this structure.Two locator protrusions 1012 are online L
1On, this line L
1Basically the center by the row of one on the orifice plate 400 ejiction opening and parallel with the bottom surface of print cartridge IT, perhaps be parallel to the reference plane of the support print cartridge of carriage, the thickness of the aspect ratio support member 300 of projection 1012 is slightly smaller, projection 1012 plays accurate positioning supporting part 300, there is a pawl 2100 extension (the right) at this figure, and the right corner field of conjugate action 4002 of it and carriage location hook 4001 is snappable.Therefore, ink discharge device acts on to be parallel to respect to the detent force of carriage and comprises line L
1A plane of reference plane in.This relation is important, equals the positioning accuracy of record head ejiction opening because the print cartridge locating accuracy becomes, and this names a person for a particular job and narrates in conjunction with Fig. 5 hereinafter.
If yet carriage IJC operated for prolonged period of time continuously, temperature can increase a little, increases in order to overcome temperature, the upper surface of carriage IJC has the slit 1700 of a width than enclosure space point, by this otch, spontaneous heat radiation is reinforced, thereby has prevented the rising of temperature.The even temperature of simultaneously whole device IJU distributes and is not subjected to surrounding environment influence.
After ink-jet carriage IJC assembles, printing ink by ink supply aperture 1200, support member 300 hole 320 and be formed in the import at ink supply portion 600 back sides, in carriage, be provided to the chamber of ink supply portion 600.From the chamber of ink supply portion 600, this China ink is by exporting, being fed in the common cavity for the ink inlet 1500 of managing and be formed on the top board 1300, the calmodulin binding domain CaM that is used for printing ink UNICOM seals with silicon rubber or buttress rubber or analog, to guarantee sealing.
In this embodiment, top board 1300 is made such as polysulfones, polyethers, polyhenylene oxidation thing, polypropylene by to the resistive resin material of China ink.It is to form with orifice plate part 400 integral dies in mould.
As noted earlier, whole parts comprise ink supply portion 600, top board 1300, orifice plate 400 and relevant therewith element and toner cartridge main body 1000, so assembly precision is improved and is convenient to and produces in enormous quantities.The quantity of element is lacked than conventional apparatus, so can guarantee good performance.
In this embodiment, shown in Fig. 2-4, the profile after the assembling is such: the top 603 of ink supply portion 600 cooperates with the top with slit 1700 of print cartridge so that form seam S, shown in Fig. 3 B.Match with the input side 4011 of thin plate and to be similar to the seam (not shown) that stitches S so that form one in bottom 604.The bottom 800 of print cartridge IT is bonded on the thin plate.Being sewed with between print cartridge IT and the ink supply portion 600 benefits the raising heat radiation, also be of value to prevent to put on the print cartridge IT or the desired pressure that puts on ink discharge device IJT directly influences the ink supply element.
The advantage that provides separately is provided respectively above-mentioned various structure, and when they were bonded to each other, they more can produce effect.
(ⅲ) ink-jet carriage IJC is installed on the frame HC
In Fig. 5, platen roller 5000 is guiding recording medium P from top to bottom, and frame HC is movably along platen roller 5000.This carriage HC comprises that a front panel 4000, one are electrically connected gripper shoe 4003 and a location hook 4001.Front panel 400 is 2 millimeters thick, is positioned near the pressing plate place.When carriage IJC installed on the frame HC, front panel 400 was positioned at the leading flank near ink-jet carriage IJC.But gripper shoe 4003 is supporting a bending 4005 that has pad 2011, this pad 2011 is corresponding to the pad 201 of wiring board 200 among the ink-jet carriage IJC, a rubber packing sheet 4007 is used to produce elastic force, and this elastic force is pushed the back side of bending 4005 to pad 2001.Location hook 4001 plays a part ink-jet carriage IJC is installed on the record position.Have two locator protrusions 2500 and 2600 corresponding protuberates 4010 on the support member 300 with above-mentioned carriage on the front panel 4000.After carriage installed, front panel was stressed on the direction perpendicular to protuberate 4010, and therefore, a plurality of reinforcing rib (not shown) plate platen roller side in front extend by the direction of power.When installation bracket IJC, this rib is from front side surface position L
5Towards platen roller direction outstanding a little (being about 0.1 millimeter), so they play the protection head.A plurality of ribs 4004 are arranged on the gripper shoe 4003, and they extend along the direction perpendicular to above-mentioned front rib of slab, and the height slave plate roller side of reinforcing rib 4004 reduces to hook 4001 sides.By like this, when carriage installed, it tilted, as shown in Figure 5.
Gripper shoe 4003 is on the lower leftward position, promptly near having two additional locating surfaces 4006 on the position of hook.Locating surface 4006 is corresponding to protuberate 4010.By additional locating surface 4006, this carriage with by the opposite direction of above-mentioned locator protrusions surface 4010 power that are subjected on stressed, be firm so electrically contact.Between protuberate 4010 up and down, arranging has the pad contact zone, thereby has determined the bowing amount corresponding to pad 2011 of sheet rubber 4007.When carriage IJC was installed on the record position, locating surface was realized contacting with the surface of support component 300.In this embodiment, the distribution of the pad 201 on the support member 300 is with respect to above-mentioned line L
1Be symmetrical.The deflection of each projection of sheet rubber 4007 is made into uniformity, so that the firm pad 2011 and 201 the pressure that contacts.In this embodiment, pad 201 is arranged in two stringers and two walks crosswise up and down.
An elongated portion that can all mesh with assembling pin 4009 is arranged on the hook 4001, utilization is by moving area that elongated hole provided, hook 4001 can be by direction rotation between the inverse time, therefore it can be moved to the left along platen roller 5000, by like this ink-jet carriage IJC being navigated on the carriage HC, this movably mechanism of hook 4001 can be finished by other structure, but preferably uses a bar or analog.During hook 4001 rotations, carriage IJC moves by side on the position from position shown in Figure 5 towards pressing plate, locator protrusions 2500 and 2600 enters the position that can be meshed with locating surface 4010, afterwards, hook 4001 is moved to the left, thereby make hook surface 4002 touch the pawl 2100 of carriage IJC, ink-jet carriage IJC rotates in horizontal plane round the tie point between locating surface 2500 and the locator protrusions 4010, so pad 201 and 2011 contacts with each other.When hook 4001 was lockable, ink-jet carriage IJC just was maintained on the position of fixing or locking.By like this, between pad 201 and 2011, between localization part 2500 and 4010, between the vertical plane of vertical plane 4002 and pawl and the whole contacts between support member 300 and locating surface 4006 set up simultaneously.So far, carriage IJC is installed on the frame HC fully.
(ⅳ) total layout of equipment
Fig. 6 is for adopting the perspective view of ink jet recording device IJRA of the present invention.Drive transmission by rotating and reverse of CD-ROM drive motor 5013 and nibble wheel 5011 and 5009, leading screw 5005 is rotated with the method.Leading screw 5005 has a spiral slot 5004, the pin (not shown) phase interlock with it of carriage HC, and carriage HC can move back and forth on a and b direction like this.Confinement plate 5002 is limited in the paper on the platen in the scope that carriage moves.Resting position checkout gear 5007 and 5008 is to be the coupling device form of taking pictures, and in order to detect the existence of carriage 5006, controls the direction of rotation of motor 5013 in view of the above.Support member 5016 is supported on the leading flank of record head on the cover piece 5022 that covers record head.Suction and pumping device 5015 plays the suction and pumping record head by the hole on the lid 5023, so that recover to utilize record head.
In this embodiment, by leading screw 5005, when cradle can cover during in resting position, cleaning and suction and pumping operation.Yet the present invention also can use other system form, and these operate in the different time and carry out in these system forms.Independent structure has advantage, and their combination is just more superior in addition.
With reference to Fig. 7 A, 7B and 7C, put up with in conjunction with the described record head of Fig. 3 A to 6 by narrating.Fig. 7 A is the decomposition diagram of the ink sprayer of the ink-jet headstock in the embodiment of the invention, in the figure, record head comprises that a upper plate 400(China ink road with groove forms part), it is used for cooperating the black road of formation with ink-jet outlet 111, heater plates 100 has the energy generating element that is heater 100A form, and the energy that it produced is used for ink-jet.Heater plates constitutes the wall in a part of black road, and black conduit 1600 is provided to the printing ink input hole 1500 that is formed on the upper plate 400 with the China ink of print cartridge.China ink conduit and ink supply pipe 2200 are an integral body, are the suspended wall form.The China ink road is made of ink supply pipe 2200 and black conduit 1600, and upper plate 400 closely contacts by the sheet spring with heater plates 100.China ink conduit 1600 and ink supply pipe 2200 are by monolithic molding and be contained on the ink supply portion 600 of ink gun (Fig. 3 A).
Fig. 7 B assembles later perspective view for the ink sprayer in the ink-jet headstock of Fig. 7 A.After the headstock assembles, an end of black conduit 1600 is closely contacted with the inlet 1500 of China ink by the elastic force of black conduit 1600 with certain rigidity.Give one example, the pressure that is produced by elastic force is approximately 100-200g.So, black conduit has a free end that contacts with black road drip molding pressure and one to be installed on the ink supply portion stiff end as cardinal extremity.
Ink supply portion with black conduit 1600 and ink supply pipe 2200 is to form with resin material such as polysulfones integral die.In this embodiment, owing to its structural reason, it is very difficult only constituting complete black road with press moulding mode.Therefore, a seal pin not shown in Figure 7 602 is press-fited in ink supply pipe 2200, so that this ink supply road is provided.When ink supply element 600 was put in the ink-jet frame, an end of black conduit 1600 was crimped into upper plate 400.In order to improve the effect of pressure contact, for example can buy the sealant of TSE399Black by name from Toshiba Silicone Co., Ltd, apply it to contact area.The lead weld tabs that sealant also can electrically contact as protection and heater plates 100 simultaneously.
End with ink supply pipe of filter 700 is pushed to the absorbing material of shaping, and this absorbing material is retained in the print cartridge China ink so that can get China ink in print cartridge.
Fig. 7 C is the top plan view of embodiment that has the ink supply box of ink supply pipe 2200.In this example, and use that the China ink material is demonstrated the upper plate 400 that the resin material of durability makes is similar, the ink supply box 600 that constitutes ink-feed channel also is molded into.The black conduit that joins with the filter 700 of heat fusing is positioned and is installed on the main body of record head.In this embodiment, be the location, shop bolt 600b is pre-formed in 600 li in ink supply box.Shop bolt 600b inserts in the through hole that forms on the support member 300 (Fig. 3 A), and is hot-melten to the back side of support member 300.In this example, ink supply box 600 all is connected by hot melting way with support member 300 with filter 700, ink supply box 600.Yet they also can connect with adhesive.But when ink supply box 600 and filter 700 were connected by adhesive, adhesive might flow in the mesh of filter 700 and reduce effective filtration area.Therefore in this embodiment, filter 700 adopts hot melting way, and shown in the local amplification profile of Fig. 7 C, the filtration receiving unit of ink supply box 600 falls in, shown in symbol 600C, so that filter 700 is correctly located.After hot melt, sunk part 600C protects filter 700.Like this, even filter 700 is loaded into continually or disassembles from print cartridge, it still can be firmly held on the original position.
As previously mentioned, containing has an ink-feeding container that constitutes ink-feed channel between black print cartridge and the ink sprayer, and the common ink chamber is used for China ink is fed to black road, and filter is used to filter impurity and bubble.The ink-jet headstock with ink feeding system shown in Fig. 3 A and 3B can be provided, and this is installed in the master component of ink-jet printer, as shown in Figure 6.
Fig. 8 is the perspective view of the liquid ejection recording apparatus (ink jet recording device) of an alternative embodiment of the invention.
Fig. 9 and Figure 10 are broken-open perspective view and the profile of recovery system and the profile of pump of recovery system.As shown in Figure 8, this equipment comprises framework 1, and left plate 1a and right panel 1b(rear portion are housed on it), left plate 1a plays for example paper of guiding recording medium.At right-hand member header board 1c is installed, back guide plate 1d is installed in the front side, elongate slot 1e plays guide bracket or guided vehicle, this groove is meshed with the delivery vehicle deflector roll that slides within it, a motor installing hole is arranged on the framework 1, be used for supporting rotationally the motor frame, this will narrate afterwards, though it does not illustrate in the drawings.
Lead arm 1h and a leading screw in vertical and radial direction upper support, this is led arm and is supported by the bearing (not shown).
Leading screw 2 has leading screw groove 2a in a pitch that is covered with posting field of being scheduled to.Carriage resting position one side at leading screw 2, along a vertical circumference gland groove 3b and pump groove 3C are arranged, gland groove 3b is used to set up the resting position of a gland, and pump groove 3c is used to set up one and recovers the position, and gland groove 3b is connected by link slot 3d smoothly with pump groove 3c.In addition, guide groove 2a is connected by medial launder 3e smoothly with lid groove 3b.
The right-hand member of leading screw 2 is equipped with a 2g, and another root axle is installed in the left side, and they are by at header board 1c with lead bearings on the arm 1h, and is supported rotationally.A leading block 3a is installed on the leading screw 2 securely, and pulley 3a is driven by motor 11 by timing belt 13, and the right axle 2g of leading screw 2 is pushed on the direction that pushes away by the sheet spring that is not illustrated or analog.
Clutch is nibbled wheel 4 and is supported on the guide wheel 3, is used for sliding in the vertical, and it is fixed on rotation direction, thereby the rotation of leading screw 2 is passed to here.Clutch spring 5 has a stage clip, is used for promoting clutch gear towards the guide groove direction.Be used for clutch gear 4 is limited in a limiting element in the predetermined mobile range between clutch gear 4 and guide wheel 3, this limiting element does not show in the drawings.
Delivery vehicle or carriage 6 are slidably mounted on the leading screw 2, symbol 6a indication be one with the left side monolithic molding of carriage 6, be used to push away the promotion part of clutch gear 4 one ends.Carriage 6 has an extension 6b who is used to detect the resting position of carriage 6.Guide pin 7 is guided in the guide hole (not shown) of carriage with the guide groove 2a engagement and the quilt of leading screw 2.Guide pin spring 8 one ends install on the carriage 6, and the other end is pushing away guide pin 7.
Record head 9 is contained on the support 6.In this embodiment, record head is boxlike and is removably mounted on the support 6, and it comprises a part 9a and whole print cartridge 9b who plays the effect of ink supply source that an ink-jet is used.For example, after China ink was consumed, record head was removable.In order to discharge China ink, this record head has an element that produces radiant in a part 9a, and this element can adopt thermoelectric sensor or pickoff.About these elements, arrange the ink-jet outlet and make the simple viewpoint of manufacturing step from high density, preferably adopt bobbin.
For instance, carriage 11 adopts pulse motor.Rotating pin 11a is contained on the bottom position of the front side of tray motor and rear side, in line and be fixed.Not shown at rear side one of rotating pin 11a() is installed in rotation in the motor pilot hole on the framework 1.Tray motor 11 can rotate round rotating pin 11a, spring receiving portion 11b and tray motor 11 monolithic moldings, and with parallel the extension of axle of motor spring so that admit the motor spring 14 that will narrate afterwards.This spring receiving portion has a cylindrical projection, and an end of motor disc spring 14 is fixed on this cylindrical projection.
Locating shaft 15 vertically is contained on the left plate 1a, to locating shaft, has a fixture that is used to improve the ejiction opening profiled surface and one to be used for topped and recovers the mechanism of spraying.
Recovery device is mainly narrated with reference to Fig. 9 and Figure 10, cylinder 24 has the rail sections 24b of a columniform part 24a and a guidance piston axle in Fig. 9 and 10, the part of rail sections 24b is cut away by the part so that an oil ink passage 24C is provided, symbol 24d is one and receives the part of covering bar, is used to admit shaft seal.China ink road 24e is at the pre-position of cylinder 24a opening.Swingle 24f and cylinder 24 are integrally formed, and it rotates by the spring 22b of blotting material spring 22.Residue of ink pipe 24g and cylinder 24 monolithic moldings, in order to be easily inserted in the residual blotting material, its head is cut into an acute angle.China ink road 24b is formed in the residue of ink pipe 24g.Cylinder cap 25 is pressed onto an end of cylinder 24, and guide post 25a is facing to the lid bar receiving portion 24d of cylinder 24.
The axis of the piston 27 comprises action axle 27a, piston stopper 27b, piston recipient 27C, connecting axle 27d and guide shaft 27e.The groove 27f that ink passage is provided is along connection shaft 27d and guide shaft 27e and form.Prevent that rotation slot 27g is formed among the action axle 27a.On the end surfaces of action axle 27a, there is an axle pump 27b at the place, end of close action axle 27a.
When the slip side angle degree of cylinder is seen, piston 28 has a main body that constitutes the elastic porous material of internal layer, it can be a kind of bulk material that has the foamed material of pore (sponge or analog) alone and have continuous pore, for example continuous little pore material.Yet preferably it be by continuous little pore material for example urethane foam make.It can be included in the upwardly extending a plurality of continuous pores in side that intersect with the strain direction.Its external diameter on the degree of a regulation than the internal diameter of cylinder more greatly, so when 24 li in its insertion cylinder, it is suitably compressed.External peripheral surface 28a and during piston bubbles, wrapped a solid layer (skin) with the contacted end surfaces 28b of piston stopper 27b of the axis of the piston 27.Even piston main body is to be made by the material of producing by foaming, this shell can not see through liquid yet, so sealing is possible, so piston 28 can be finished its function.Under the situation that shell is not provided, can use independent seal coating.
What numeral 42 was indicated is pump chamber.Piston promotes roller 29 and installs to rotationally on the end of the axis of the piston 27, and piston returns on the end that roller 30 installs to the axis of the piston 27 rotationally.Numerical chracter 31 refers to the axle of this roller.
It works to cover cage 34 when flange 35d is installed on the cage 34.Flange 35d has a lid hermetic unit 35e of concave ball shape shape that has with the sealing surface 32d same curvature of lid bar 32, when it is pulled to when covering on the bar 32, have only opening to communicate, and other parts seals.Because hermetic unit (32d, 35d) is a sphere shape, so cover piece is compensated in good mode, step portion is arranged even spray the side, this step portion also communicates easily, so can set up stable sealing state.
When ink-jet is not enough, operate by initial venting and to finish the suction and pumping recovery operation, will narrate in this connection below.When the starting recovery operation, timing gear 21 is then rotation from topped position, is promoted by cam 216 by such lid bar 32, and thus, shown in Figure 12 C, lid 35 leaves the ejection side surface a little.
Then, guide pin 7 moves on to pump groove 3c along link slot 3d, is moving one section predetermined distance (distance between lid groove and the pump groove) on the B direction by such carriage 6.
When timing gear 21 then rotated on the D direction, lid 35 broke away from interlock with lid cam 21d, then covered 35 and was touched the ejection side surface by pressure, and this moment, record head 9 is moved, so the ejection side surface is covered by suction and pumping lid 35b.
See Figure 11, spout 9c departs from the ejection side surface towards posting field.In the gland operation of normal no suction action, the whole surface of lid 35 faces the ejection side surface, sees Figure 11 B, and the pressure that therefore covers 35 pairs of ribs is less.Yet this moment is needed only to be sealing ribs, does not therefore destroy the anti-effect of doing.Like this, the required about 10g of pressure of sealing ribs is just enough.In addition, the flutter of rib is very little, makes that covering internal volume dwindles seldom, and therefore, the falcate China ink on the gland can be by indentation (this be not favourable).
See Figure 11 C, the lid during recovery operation is action like this, and promptly normal gland partly departs from the ejection side surface, and at this moment, pressure only is applied on the rib that recovers lid.So, strengthened sealing effectiveness, thereby helped to prevent the leakage of vacuum.In this case, owing to dwindling of gland internal volume, the indentation of falcate China ink, therefore, by means of suction operation, this phenomenon is no problem.
After finishing gland seal, recovery operation at the beginning, suction operation also begins to carry out.
By the rotation of timing gear 21, the piston that piston Positioning Gear 21f promotes to be contained on the axis of the piston advances roller 29, thereby the axis of the piston 27 is moved in the H direction, sees Figure 13 A.Under the promotion of piston scotch 27b, piston 28 moves along the H direction, makes pump chamber 42 emptyings.Between the outer surface of piston 28 and piston scotch 27b an epidermal area is arranged, like this, Mo Buhui leaks from the intercommunicating pore of foamed material.
In addition, the oil ink passage 24e of piston 28 shifter cylinders 24, thereby the vacuum of increase pump chamber 42, but piston 28 is movably.On the other hand, as shown in FIG. 13A, behind gland again, oil ink passage 24e is opened, and sees Figure 11 C, then just can aspirate printing ink by covering 35 SS 25c.The China ink that this suction comes is passed in the ink passage 32f that covers formation on the bar 32 and enters in the connecting hole of shaft seal 33.The China ink flow through further cylinder 24 ink passage 24e and enter pump chamber 42.This process is carried out continuously, up to make owing to infeeding of China ink in the pump volume-variation make vacuum be reduced to.
When timing gear 21 is further rotated, under the effect of lid cam 21e, lid 35 leaves the ejection side surface again slightly, the result is, under the effect of the remaining vacuum in pump chamber, black by sucking-off from the space that is limited by ejection side surface and suction gap 35b, thus make China ink from discharging there.
Then, timing gear 21 reverse rotations, piston reset cam 21g hauls piston reset roller 30.See Figure 13 B, the axis of the piston 27 moves in the J direction.At this moment, after the piston receiver 27c of the axis of the piston 27 touched piston 28, piston 28 moved, thereby formed gap △ 1 between piston end face 28b and piston scotch 27b.
By moving of the axis of the piston 27 and piston 28, remaining printing ink flow to the center of the black absorbing material 37 of residue in the pump chamber 42 through above-mentioned gap △ 1, groove 27f, ink passage 24c on the cylinder 24 on the axis of the piston and residual ink 24g.At this moment, in the starting stage that piston 28 moves, piston 28 has been closed the oil ink passage 24e of cylinder 24, and therefore, residual ink can oppositely not flow in the lid.
Figure 14 A is the cutaway view of an example with ink jet print head of a whole print cartridge.Under normal condition, shown in Figure 14 A, under capillarity, printing ink from print cartridge 1000 fills up corresponding oil ink passage 401, and at contiguous inkjet mouth 111 places, stably forms a falcate China ink M, under the vacuum action of print cartridge 1000, the position of this China ink M slightly indentation some.In this state, because of printing ink ejection or discharge the print cartridge 1000 of capillarity from each ink-jet part of the vacuum suction effect that the minimizing of printing ink in the oil ink passage 401 that causes will be by being better than absorbing material 900 in the print cartridge and replenished, like this, China ink can spray continuously.Yet, if the falcate China ink at spout 111 places collapses to such degree, be that public black chamber 401a is in communication with the outside, as the above, then under the vacuum action of empty cartridge 1000, printing ink in the injection ink feeding system in the ink sprayer that comprises oil ink passage 401 is seen Figure 14 B by in the indentation print cartridge 1000.In this case, China ink contacts with filter 700.The China ink that remains in absorbing material 900 parts that contact with filter 700 pressure may be not enough.For example, under the evaporable condition of China ink, keep under the long-time obsolete situation at black frame, the evaporated liquor of printing ink passes spout continuously, and in addition, the tiny bubble of staying in the black transmission channels increases, and this will be interpreted as black room.When the further placement of black carriage is not used, even the China ink in absorbing material 900 also will become not enough.In this case, in fact ink-jet can not be carried out, therefore, recovery device must be handled.In this embodiment, as the above, by the swabbing action of pump, off working state is cancelled.Because following suction action, recoverable operation really.
In this embodiment, the aspiration of the printing ink (liquid) under a forced discharge action effect is greater than the internal volume of the whole ink passage of ink discharge device, under the ink discharge device effect, China ink in the absorbing material 900 of print cartridge necessarily passes ink passage and flow in a plurality of ink passages 401, when doing like this, even the printing ink room occurs, still can guarantee to return to the state shown in Figure 14 A.
Figure 14 C shows an example of comparing, and at this, under action effect once, aspiration reduces to half.Will be appreciated that from figure under swabbing action, the China ink in the print cartridge was once delivered to the middle part of ink passage.Yet the viewpoint from the functions peculiar of ink-jet carriage need produce vacuum in the print cartridge side, therefore, shown in arrow among the figure, if be in communication with the outside at suction operation rear jet 111, then the China ink that once transmitted will turn back among the print cartridge IT, consequently be in the state of Figure 14 B again.This is one and is the peculiar problem of ink gun carriage, the place that print cartridge on the precalculated position of a non-exchange sweep record head and the main assembly parts that are fixed on recording equipment is connected, be connected with an ink supply pipe, long tube such as a minor diameter, print cartridge will be positioned on the horizontal plane that is lower than spout, so that the negative static head of an adjacent spout to be provided, thereby make ink jet stable, on the ink-jet part, may produce similar black indentation.Yet in fact, the resistance of ink supply tube passage is so big so that above-mentioned phenomenon can take place.Therefore, normal suction operation is enough to make equipment to be resumed work really.
The effect of this embodiment will be illustrated with data.The ink-jet carriage has 64 spouts so that 360dpi(point/inch to be provided) image.Under the maximum drive frequency of 3KHZ, the printing ink carriage sprays the 75pl(microlitre) drip.Print cartridge holds the printing ink of 25cc, and at this, the capacity of the ink feeding system of head is 0.07cc.Shown in the capacity table 1 below that pump 50 has.In the experiment of being carried out, eliminated black room by recovery operation.
Table 1
Recovery extent is recovered the back printing under the normal condition of pumping stages
The aspiration of volume change
Example 1 0.300(cc) G F 0.280(cc)
Example 2 0.230 0.210 G G
Example 3 0.170 0.140 G G
Example 4 0.100 0.070 G G
Comparative example
1 0.090 0.060 U N
2 0.070 0.040 N do not have printing
3 0.060 0.020 N do not have printing
G: good F: suitable U: unstable N: bad
If the experiment disclose the entire capacity of aspiration greater than ink feeding system, China ink can fill up again, and if aspiration is less, again the filling be unsettled, if aspiration is still less, then can not fill up again.With regard to the printing quality after filling up again, when aspiration is very little, promptly enable under stable inadequately situation, to fill up again, its result also is unsafty.In this experiment, when aspiration surpasses three times, printing quality descends slightly, and its reason sees below.In this ink-jet carriage, if the black discharge capacity of the time per unit that is produced by pressurization tapping equipment such as aspirator surpasses amount of movement (when reaching this amount of movement, time per unit is from the black removable of print cartridge IT and be sent to ink supply aperture), then can not supply with sufficiently through the China ink of filter 700, its possibility of result is that the tiny bubble in the blotting material 900 is directed in the ink discharge device (ink sprayer) in the print cartridge.In this embodiment, the flow velocity that printing ink flows through filter 700 will be measured in conjunction with above-mentioned phenomenon.Not causing the instantaneous maximum mass rate of emission of printing ink of above-mentioned phenomenon in the print cartridge is 0.6cc/sec.Area according to filter 700 calculates, and found that the black flow velocity degree in filter preferably is not more than 0.2cc/sec.mm
2Therefore,, can increase the cross-sectional area of filter 700, to reduce the black flow velocity degree of per unit area and time per unit in order to prevent above-mentioned phenomenon.Change the profile or the material of absorbing material 900 in the print cartridge, help increasing the flowability of print cartridge China and Mexico.
Collateral security has the viewpoint of sufficient ink amount supply ink sprayer to set out, and the 1-3 of the preferably black road of aspiration volume doubly.
Figure 15 shows the waveform of the pump pressure during the suction recovery operation.Be to be understood that because the importing of China ink, the vacuum pressure in the pump has reduced.In the figure, owing to the resistance of ink passage 401 or similarity piece and because the effect of the vacuum among the print cartridge IT makes the printing ink import volume reduce; The effect of falcate China ink makes that the printing ink that aspirates can not flow at high speed under a little pressure differential.Owing to above these reasons, so kept a small vacuum capacity at the rear portion of suction operation.
In this example, lid finally loosens to discharge all negative pressure.In this embodiment, the pressurization tapping equipment is the form that is aspirator.As long as China ink can be delivered to ink sprayer, the form of the tapping equipment that then pressurizes is unrestricted, for example, thereby can use a kind of exerting pressure by pore that printing ink is pushed pressure apparatus in the ink sprayer.
Be provided for the recovery device and the preparation device of record head, can improve the stability of apparatus of the present invention better.Except pressurization or aspirator as the pressurization tapping equipment, also provide pressing device, clearing apparatus, use electrothermal transducer or use the preheating apparatus of an independent heating elements and be used for ink-jet but be not the pre-spray apparatus that is used to print, these devices can both make record stable better.
The structure of ink-jet carriage itself is not limited to the disclosed embodiments.When the suction force with print cartridge stably is maintained the falcate China ink, when with an oil ink passage spout 111 being connected with print cartridge IT, the present invention is suitable for.For example, for record head, its body can be made of heating plate 100 and top board 400, and the groove and the common liquid chamber of formation ink passage only form on top board, but they also can form on heating plate and top board.
With reference to Figure 16 A, 16B and 16C, another embodiment will be described.In this embodiment, the ink-jet carriage has the smaller ink passage of cross section to promote the filling again of China ink under capillarity.In this embodiment, the aspiration of pressurization tapping equipment is greater than the internal volume of the ink passage except that a plurality of ink passages 401.This is that the internal volume of ink passage 401 is very little because compare with the internal volume of the ink passage that comprises common ink chamber 401a and similarity piece.Employed ink-jet carriage IJC has 128 spouts in this test, and the image with 400dpi can be provided.The capacity of the droplet that is sprayed is that 28pl/ drips.Maximum drive frequency with 4KHZ produces these drops.Ink volume capacity (pure) is 35cc, and the internal volume of oil ink passage is 0.06cc.Figure 16 A, 16B and 16C show the process that printing ink fills up again.The recovery operation of this embodiment becomes Figure 16 A condition with Figure 16 C state (black room).See Figure 16 B, China ink is refilled the common ink chamber 401a side of ink passage 401.In this case, under the strong wool capillary action, China ink can be filled spout 111 again.It is good recovering later printing quality.
Figure 17 shows a further embodiment, in this embodiment, except filter 700 is housed, an additional filtering device 700a has been installed also in ink-feed channel 1600a, and filter 700 is positioned at and blotting material 900 touching positions.The position of filter 700a is unrestricted, but it preferably between two joints, a joint is between the top board 400A and ink supply pipe 1600 of trough of belt, another joint is between ink supply pipe 1600 and print cartridge 1100.The internal volume of the ink passage of the ink discharge device in the ink-jet carriage is 0.08cc.
In the suction operation, the aspiration of suction pump is 0.05～0.06cc each time.
Supposing does not provide filter 700a, even repeat to aspirate recovery operation, China ink also is not easy to refill whole ink discharge device.This is because ink I is sucked on half road of ink-feed channel 1600a, but as long as one remove suction action, then the negative pressure of absorbing material 900 just makes the printing ink withdrawal.In this embodiment, in ink-feed channel 1600a, provide a filter 700a, filter 700a and and absorbing material 900 contacted filters between capacity do littler than each suction action China and Mexico aspiration, for example be 0.04cc.In each suction action, China ink can not be sucked into the spout of ink sprayer, but when China ink is withdrawn owing to the vacuum in the absorbing material 900, forms the falcate China ink in the mesh of filter 700a.The power of maintenance falcate China ink is better than the negative pressure of absorbing material 900, and therefore, China ink is stayed among the filter 700a, and like this, Mo Buhui is withdrawn in the print cartridge.In addition, the internal volume between the spout 111 of filter 700a and ink sprayer approximately is 0.04cc, and therefore, in second suction action, China ink is sucked in the spout 111 of ink sprayer really.Like this, guarantee to form the falcate China ink at spout 111 places, thereby be full of China ink, can print like this at whole ink passage.Consider the internal volume of ink-feed channel and the pump capacity that suction recovers pump, the filter 700a in the ink-feed channel 1600a is arranged on a suitable position.The quantity of filter 700a is not limited to one.At black interregnum, if bubble absorbing material 900 and and absorbing material 900 contacted filters 700 between, then the total amount of the inner capacities of the ink-feed channel of the capacity of bubble and inkjet head device is the actual content amount of ink passage.These will join in the pump capacity as storage level, and its result has high reliability.
According to this embodiment, can use the less pump of capacity, can reduce the size of equipment like this.In addition, can reduce the flow velocity of the printing ink of process filter 700 in each suction action, therefore reduce bubble from print cartridge.
In this ink-jet carriage, if under pressurization tapping equipment such as aspirator effect, black discharge capacity surpasses black amount of movement (China ink among the print cartridge IT moves and flow to ink supply port at time per unit with such amount of movement) in the time per unit, the quantity delivered that then flows through the China ink of filter 700 is not enough, the result that may cause is that the tiny bubble in the blotting material 900 of print cartridge is sent in the ink discharge device (ink sprayer).In this embodiment, the China ink speed that flows through filter 700 will be measured in conjunction with above-mentioned phenomenon.The instantaneous maximum that can not cause the black mass rate of emission of above-mentioned phenomenon is that the 0.6cc/sec(China ink is discharged from print cartridge).Area according to filter 700 calculates, and it found that the flow velocity in filter China and Mexico preferably is not more than 0.2cc/secmm
2Therefore,, can increase the cross section of filter 700, reduce the flow rate (speed) of China ink in per unit area and the time per unit by the suction capacity that reduces pump in order to prevent above-mentioned phenomenon.
In this embodiment, the inner capacities of the ink passage of ink gun is 0.08cc; The aspiration of the suction operation each time of pump is 0.05-0.06cc, and filter is arranged on such position, and the capacity of 0.04cc promptly is provided at the print cartridge side of passage.
The present invention is not limited to accompanying drawing, can decide according to the aspiration of each suction action of the inner capacities of the ink-feed channel of inkjet head device and suction pump.
If filter is arranged on such position, be the aspiration that its capacity of being had on this position surpasses each suction action, then black room will occur, therefore, preferably filter is arranged on such position, promptly the capacity that it provided is less than the aspiration of suction pump.
Preferably satisfy V
D＞V
I, V herein
DThe aspiration of each suction action of expression suction pump, V
IBe between filter 700 in the print cartridge and the filter 700a, to increase flow resistance and the capacity of falcate China ink be provided.
Figure 18 A and 18B show further embodiment.As the above, when record head is idle when not using, in ink-feed channel, produce bubble, and bubble shifts to ink passage, the result room occurs and the phenomenon of undesired ink-jet occurs at Mo Daozhong.In order to allow ink flow, even produce a certain amount of bubble in passage, it is corresponding big that the cross section of ink passage 1600a is also wanted.Yet when doing like this, the inner capacities of the ink passage of inkjet head device has become greatly.
See Figure 18 A and 18B, in this embodiment, the cross section of ink passage 1600a reduces at the certain position place, so that a less diameter segment 1600b to be provided.When the circumference of the inside of ink-feed channel 1600a was very long, it was very little keeping the power (if there is) of falcate China ink, can not overcome the negative pressure of absorbing material, and consequently printing ink is withdrawn in the blotting material 900.Yet, if reduce the circumferential length of ink-feed channel 1600a pipe, promptly reducing cross section, flow resistance increases, and helps like this making keeping the confining force of falcate China ink big, and therefore, printing ink can not withdrawn.For the infringement that the generation that stops owing to bubble causes, can not reduce the diameter of whole ink-feed channel, what can consider can only be the presumptive area that minor diameter is set.In this case, the diameter of Minimum Area is not more than 0.5mm.Be not limited to accompanying drawing, also can be according to the generation and mobile the deciding of confining force that keeps the falcate China ink and/or bubble.The smallest cross-sectional area of ink-feed channel 1600a and and print cartridge in capacity between the absorbing material 900 contacted filters 700 less than the aspiration of pump, so even the total capacity of ink-feed channel in the device is aspirated capacity (Figure 18 A) greater than pump, printing ink also can be under suction action really the little transverse cross-sectional area from ink-feed channel 1600a be filled to common ink chamber.China ink is contracted under the pull of vacuum effect of blotting material 900, but because little transverse cross-sectional area has high flow resistance, thereby Mo Yiyi withdraws at a slow speed.In addition, in diameter segment, it is very strong keeping the power of falcate China ink, sees Figure 18, therefore, can prevent that black reverse flow from getting back in the print cartridge.Because the inner capacities from the reduced diameter section of ink-feed channel 1600a to the record head nozzle less than the aspiration of pump, therefore, by twice suction action, can be full of China ink the whole passage of head device.In this embodiment, ink-feed channel does not need the add ons (filter) in the previous embodiment, thereby has further reduced manufacturing cost.
In this embodiment, even diameter (cross section) does not reduce to such degree, promptly kept here fully by the China ink that the first time, swabbing action was transmitted, if the China ink amount of indentation print cartridge still can provide good equally effect to making by capacity that the second time, swabbing action was full of less than a kind of like this degree of pump aspiration for a short time during swabbing action up to the second time.
Figure 19 shows a further embodiment, has the prominent part in a part or a plurality of prominent part to reduce the ink-feed channel diameter and a bigger flow resistance is provided at this ink-feed channel 1600a.Select the profile of prominent part, can more easily be maintained the falcate China ink, and can obtain and the same good effect of the foregoing description.
In the above-described embodiments, if black sensor electrode be positioned at filter the position, be positioned at reduced diameter section or be positioned at prominent part and sentence and allow resistance between measurement electrode, no matter China ink is to be present in the filter place, or to be present in reduced diameter section or the prominent part, all can detect.
Figure 20 shows an embodiment, and wherein electrode is adjacent to filter.Then, in case when filters locations, reduced diameter section or prominent part position detection China ink, will carry out suction operation one time,, then will carry out the suction action of pre-determined number if printing ink does not exist in there.By doing like this, just can guarantee that printing ink aspirates effectively and do not have waste, thus the recovery record head.
In this embodiment, if filter and prominent part are used as a disc, also be possible as electrode prominent part itself.Described hereinbefore black sensor is a kind of like this pattern, promptly can measure the resistance between the electrode.Yet sensor is not limited to this type, exists or does not exist as long as can detect China ink.
As preceding described, according to previous embodiment, ink-jet carriage with whole ink supply box and head device is provided, wherein, by the use filter or by providing a little cross section (by the minimizing cross section or by prominent part) that disc is provided, in order to increase the flow resistance in the ink-feed channel, even the suction of ink jet recording device recovers the inner capacities of the pump capacity of pump less than head device, leaning on several times, suction action still can make China ink be full of inkjet head device.Therefore, in ink jet recording device, just no longer need jumbo suction pump.Thereby, reduce the size and the reduction expense of equipment easily.Can provide black sensor at filters locations, minor diameter position and prominent part place, the effect number of times of pump can change in the recovery operation in anti-black room and anti-being solidified by China ink between the recovery operation that the spout that causes blocks, can be used effectively at this China ink, therefore, running expense can reduce.
Figure 21 shows the record head among another embodiment, and it has a whole print cartridge.Has identical effect with the sequence number components identical that Fig. 1 is demarcated.In the figure, blotting material 900a is pressed into one to have among the cylindrical member 1600c of ink-feed channel 1600a in it, and the end of absorbing material 900a is by the supporting member 1600d supporting of rib or analogous shape.Because the blotting material is pressed among the ink-feed channel 1600a, so it is that pressure contacts with filter 700.
See Figure 22, ink gun 400a and print cartridge 1000 are by the insertion of cylindrical member 1600c and be connected, blotting material 900 is pressed in this part simultaneously, the absorbing material 900 that is arranged in print cartridge 1000 exposes, their connections each other realize by machinery or adhesive glue, like this, the absorbing material 900 in the print cartridge 1000 contacts by filter 700 with absorbing material 900a among the ink gun 400a and is connected.
Be adjacent to the linkage section that ink gun 400a joins because absorbing material 900 is crushed on, thereby suction force is greater than not compressed section.The suction force of absorbing material 900a can be selected like this, and promptly it is as many as or greater than the suction force at the linkage section place that is connected with ink gun 400a at absorbing material 900 or contiguous this section place.Owing to effect, make absorbing material 900a always remain under the China ink condition more than needed because of the different pumps that produce of suction force.
Because these above-mentioned structures, the China ink in absorbing material 900 can be used effectively.In addition, even black vacant state occurs, the China ink of absorbing material 900 state more than needed can prevent effectively that also bubble from importing in the absorbing material 900, and the real gas in the spout will reduce, and therefore, still is enough to carry out restitution although pump capacity is less relatively.
With regard to the material of blotting material 900, preferably polyurethane or similar material, but be not limited to these materials.The material of absorbing material 900 can be identical with the material of absorbing material 900a also can be different, as adopting the Lubcell that can buy from Tokyo high polymer Co., Ltd..
When record head had a whole print cartridge, the structure of this embodiment was effective especially, and ink-feed channel 1600a is longer relatively, and therefore, internal volume is also relatively large.
According to this embodiment, even black room occurs, the China ink among the ink-feed channel 1600a is also not all lost, and therefore, can reduce the real gas amount, thereby reduces the capacity of pump, and wherein, a stroke operation of pump is enough to the recovery record head.
Figure 23 is a stereogram that has the ink-jet carriage of a whole print cartridge, and whole print cartridge removably is contained on the shelf of ink jet recording device, and these will be narrated hereinafter together with Figure 24.
Ink-jet carriage IJC according to this embodiment has a print cartridge 880 and following body 886 and driving signal or a similar signal and a side-connector 885 that is used to detect China ink reservation quantity sensor output signal that is used to receive a body 886.Side-connector 885 is mutually arranged side by side with print cartridge 880.Therefore, when carriage IJC is contained on the frame, can reduce height H.By reducing the width on the carriage scanning direction, can make a plurality of carriage IJC place side by side, then shelf can be done lessly.
Have a plurality of spouts on the body 886 of this embodiment and the basal surface, have the energy that is used to produce the energy that helps ink-jet with the fluid passage of this spout connection and produce part.Because can increase the density of spout or fluid passage, so energy produces preferably electrothermal transducer of part.
Figure 24 and Figure 25 are three-dimensional view and the plan views that illustrates around the structure of the shelf of ink jet recording device, and the carriage IJC shown in Figure 21 removably installs on this ink jet recording device.
Be to be understood that from this figure shelf 802 has 4 carriage IJC1, the IJC2, IJC3 and the IJC4 that comprise different colours China ink material (for example, yellow ink, magenta ink, cyan ink and tusche) that are positioned at the tram.
Connect clamper (keeper) 840 and have 4 pin 810(distribution A-D), in Figure 24, these pins are by spring 810a(spring A-D) push away left, connect clamper 840 by an axle 820(axle I and an II) and with rod member 821(rod member I and rod member II) engage, and rotatablely move (clockwise or counter clockwise direction) by means of the action bars 807 that engages with rod member 821, connecting clamper 840 can left and move right in Figure 24, when it shifts to the right side, pressure is released, thereby can unload bottom bracket, when it shifted to the left side, it admitted carriage.
When carriage IJC was contained on the 802f of mounting portion, the record head 886 of carriage IJC was inserted into the guide groove 802f of mounting portion 802f from top
1In.At this moment, the right angle part 802h of shelf 802 inserts between the guide rod 883b of carriage IJC, thereby carriage is generally located.When action bars 807 when axle 809 is rotated in a clockwise direction, clamper 840 is sent to, the quilt that makes the guide rod 854 of shelf 802 be inserted into carriage IJC has cut among a part of section 883a, simultaneously, pin 810 engages with carriage IJC, whereby, carriage IJC is installed on the 802f of mounting portion, load onto spring 859 on the shelf 802, producing a motive force, thereby the carriage IJC that will be arranged in mounting portion 802f is pressed to the rear portion to improve the accuracy of location.The end 810b of distribution 810 contacts to promote this carriage with the adjacent surperficial 801d of carriage IJC.The outer surface 810C of distribution 810 contacts with the abutment surface 802s of shelf 802 to accept thrust independently on the direction perpendicular to the long axis direction of promoting, therefore, warranty element 840 is only accepted spring 810a(spring A-D) reaction force, thereby do not produce thrust.In the time a plurality of carriages will being discharged simultaneously, handle release lever 807 to carry out loading, unloading work with a very little power.
For the head connector 885 of carriage IJC and the connector 806(master assembly connector of main assembly parts) between engagement and the operation and the corresponding mechanism of non-engagement will be described hereinafter.
When main assembly connector 806 is inserted in the head connector 885, control stick 807, simultaneously, under the effect of the elastic force of extension spring 841 or similarity piece, with main assembly connector 806 is that one whole engages axle 806a is meshed with the engaged section 840b of the engaging hole that is connected clamper 840, main assembly connector 806 be connected clamper 840 and move with becoming one.Construction section 802f by carriage IJC being installed to shelf 802 go up and roughly the head connector 885 of location and the main assembly connector 806 of roughly locating by engages axle 806a is meshed with engaged section 840b meet each other, and be guided till main assembly connector 806 and head connector 885 are meshed (contact) along the inclined surface (not shown) of main assembly connector 806.After this, connecting clamper 840 moves right and passes preset distance 1 and towards the rear portion of Figure 24 (this moves is that rotation by bar 807 causes).Here, predetermined distance is enough to make a 806a to disassemble from engaged section 840b, thus it be one section in order to main assembly connector 806 is changed into the distance of removable (remove and connect) state from stationary state.
Because the power that main assembly connector 806 is meshed with head connector 885 is greater than extension spring power, thereby main assembly connector 806 can discharge from connecting clamper 840, promptly they are thrown off.Here, therefore the diameter of the enlarged diameter section of conjugate foramen 840a, produces the gap between the two at them greater than the engages axle 806a of main assembly connector 806.When main assembly connector 806 engages with head connector 885, main assembly connector 806 be connected clamper 840 and separate, thereby, only promoting under 810 the motive force effect, carriage IJC is with respect to shelf 802 location, guarantees that like this record head 886 correctly locatees with respect to shelf 802.
Then, when carriage IJC unloaded (release), bar 807 forwarded horizontal level (position of Figure 24) in the counterclockwise direction from vertical position.Under forceful action, engages axle 806a is connected with head connector 885, but along with connecting clamper 840 moving to the right, the larger diameter side surface of conjugate foramen 840a leans against on the engages axle 806a, push it against Figure 24 the rear portion so that main assembly connector 806 unload from head connector 808.Simultaneously, distribution 810 moves and leaves record head 886 with clamper 840 as one.
In Figure 24 or 25, scanning rail 811 extends the shelf 802 that slides with supporting thereon on the main scanning direction of shelf 802.What sequence number 811a represented is bearing.The flexible cable 851 that is used to the information that transmits links to each other with carriage IJC by connector.Belt 852 transmits and makes shelf 802 reciprocating driving forces.Paired roller 817,818 and 815,816 is separately positioned on the preceding and back with conveying recording medium of record position by a body 886 with them.The effect of pressing plate 850 provides a flat recording medium surface.
With reference to Figure 24, will the ink jet recording device that use said structure be described.In this equipment, recovery system unit R U is arranged on static (originally) position side on Figure 24 left side.
In recovery system unit R U, capping unit CU is used to have each of a plurality of carriage IJC of record head body 886, it is along with moving together of shelf 802 slided left and to the right, also can vertically move, when shelf 802 was positioned at resting position, it joined to merging with a body 886 and covers a body 886.
Recovery system unit R U has one first wiping spare (cleaning cutter) CB1 and the second wiping spare (cleaning cutter) CB2, and blotting cleaning of materials cutter CBC is used to clean the first cutter CB1.In this embodiment, the first cutter CB1 is bearing in the suitable mechanism, this mechanism is used to make cutter vertically to move, this motion of moving by shelf 802 drives, so, the first cutter CB1 can outstanding (emersion) position and do not disturb between indentation (loweing) position of extrusion position mobile, at extrusion position, the first blade CB1 scrape a body 886 the spout that spurts side surface around.
What the residing installation site of the second cutter CB2 can scrape a body 886 that the first cutter CB1 can't scrape spurts the side surface section.
Recovery system unit R U further comprises a pump housing PU who is communicated with lid CU, and it is used for producing vacuum in suction operation, and at this moment, lid CU engages with record head chip 886.Because the size of carriage, the size of pump housing PU can reduce.
Figure 27 shows another embodiment.
Absorbing material 900a in ink-feed channel 1600a is compressed in advance, and compression ratio is to control, and then, it is easily inserted among the ink-feed channel 1600a.Blotting power can be controlled equally.At the end of cylindrical part 1600c, have one and the contacted filter 700 of absorbing material 900a.After filter 700 was fixed to the end of absorbing material 900a, absorbing material 900a can be inserted into (said structure may be used in the previous embodiment) among the ink-feed channel 1600a.
In this embodiment, the absorption ink material 900 in the print cartridge 1000 is to be made by two kinds of different material 900-1 and 900-2 with different suction.The suction of absorbing material 900-2 is better than absorbing material 900-1, owing to exist this suction poor, under pumping action, it is black more than needed that absorbing material 900-2 becomes.By making absorbing material 900a have the suction stronger,, also can guarantee China ink state more than needed even this suction difference is very small than absorbing material 900-2.
Utilize said structure, it is possible that the China ink in the print cartridge 1000 uses up, and can reduce the running expense of carriage.Even black vacant state occurs, just can carry out recovery operation with low capacity pump in the previous embodiment.
Absorbing material 900a is preferably such, promptly it product group or available pure water do not clean to enough clean degree with it.
Figure 28 shows another embodiment.The filter that use to separate wherein, but with the lip-deep cortex 900c of absorbing material 900b as filter.If the hole diameter of cortex is the 3-20 micron, it will prevent effectively that impurity or bubble from entering common chamber from passage.
The inner air vent of absorbing material 900b is a diameter 10-50 micron, and surperficial cortex has the pore of 3-20 micron simultaneously.With such inner air vent diameter, the suction that is caused by the negative pressure of absorbing material 900b self can be increased, so just needn't compressed absorbent material.
The hole diameter of absorbing material 900a is 50 to the hundreds of micron in the aforementioned embodiment.The pressured absorbing material that contracts can increase suction.The material of absorbing material preferably continuous poriferous as polyurethane foam or analog.The surface cortex can be used as filter.In this embodiment, can control the interior hole diameter of interior continuous pore.For example, the employing Lubcell that can buy from Tokyo high polymer Co., Ltd..
In the aforementioned embodiment, print cartridge is full of the blotting material, but it is only at the neighbor filter place.For example, in as Japanese patent application 18228/1988 in the disclosed record head with whole print cartridge, print cartridge is divided into blotting material part and ink guide part and holds room with the China ink of absorbing material absorption, and ink guide part is sent to the China ink in the absorbing material in the ink sprayer.
As aforementioned, provide one have print cartridge and with the ink jet print head of a print cartridge body in aggregates, wherein, filter bits is in a position at the other absorption China ink of record head body, preventing the suction of impurity, and absorbing material is set in place in the ink-feed channel on a side that closely contacts with filter, carries out the pump action by the suction difference of absorbing material, can use the China ink in the print cartridge effectively, so just reduced the running expense of ink jet recording device.Because absorbing material in the ink-feed channel on a side is in China ink state more than needed, so even when the black room of appearance, bubble can not be incorporated in the absorbing material yet, thus the real gas capacity in spout that makes has reduced.Therefore, even the capacity of suction pump is less relatively, also can in recovery operation, use enough suction forces.
When doing like this, the size and the minimizing expense that reduce ink jet recording device are possible.Because suction pump is small-sized, so the black consumption rate of suction during the recovery operation little in the common abnormal condition in inkless room, thereby running expense further reduced.
Particularly suitable of the present invention wherein, can use the heat energy that produced by electrothermal transducer, laser beam or analog causing the variation of printing ink state in ink jet print head and recording equipment, thus ejection or discharge China ink.This is because can reach the high density of image component and the high-resolution of record.
What typical structure and method of operating were best is in U.S. Pat 4,723, and that discloses in 129 and US4,740,796 is a kind of.Spendable method and structure is a kind of register system and continuous type register system that just needs type (on-demand type) that be called.Yet, particularly suitable be to adopt just to need type, because method is such, promptly drive signal and be applied in the electrothermal transducer that is arranged on liquid storage (China ink) plate or the fluid passage to major general one, driving signal is enough to provide a temperature rise fast considerably beyond the nucleation boiling point.In view of the above, produce heat energy by electrothermal transducer and produce the film vaporization, thereby drive signal, can in liquid (China ink), form bubble corresponding to each with the thermal treatment zone at record head.When bubble generation, expansion and contraction, liquid (China ink) sprays to produce a drop at least through spout.Drive preferably impulse form of signal, because can realize the expansion and the contraction of bubble instantaneously, thereby liquid (China ink) can react to signal and spray apace.The driving signal of impulse form is preferably as United States Patent (USP) 4,463, and 359 and 4,345,262 is disclosed such.In addition, the temperature of the area of heating surface gathers way best as United States Patent (USP) 4,313, and 124 is disclosed such.
The visible United States Patent (USP) 4,558,333 and 4,459,600 of the structure of record head, wherein the thermal treatment zone is positioned on the bending section, simultaneously, the combined structure of spout, fluid passage and electrothermal transducer in above-mentioned patent in addition open.In addition, it is 123670/1984 the disclosed structure of Japanese patent application that the present invention can adopt publication number, and wherein, a common elongated slot is as the spout of a plurality of electrothermal transducers; Also can adopt the structure that discloses in publication number is 138461/1984 Japanese patent application, wherein, an opening that is used to absorb the pressure wave of heat energy forms corresponding to spout part.This is because the present invention writes down operation really effectively, and does not consider that the pattern of record head writes down operation efficiently.
The present invention uses one to be called the record head of type (full-line type) completely effectively, and it has the length corresponding to the dominant record width.Such record head can comprise a single record head and a plurality of record head, and they combine and cover Breadth Maximum.
In addition, the present invention can use a tandem type record head, and record head is fixed on the main assembly parts, can also use reciprocating type chip-shaped record head, this record head is electrically connected with main equipment and can be provided printing ink when it is contained on the main assembly parts, perhaps uses the carriage type record head with whole print cartridge.
They recovery device preferably are provided and/or are used for the servicing unit of scheduled operation, because can further stablize effect of the present invention.These devices are: be used for the pressing device of record head, and cleaning device, pressurization and aspirator, and can be the preheating device that electrothermal transducer, additional heating element heater or they combine.Equally, realize that the pre-device that sprays (being not used in the record operation) can the stable recording operation.
With regard to the variation of record head assembling, it can be corresponding to the single record head of single look China ink or corresponding to the black a plurality of record heads of expecting of the polychrome with different recording color or density.The present invention can use such equipment effectively, be that it has one of following type at least, these types are: the monochromatic type that is mainly black, have the polychrome type of different colours China ink material and/or use the panchromatic mode of multiple blend of colors, this equipment can be the integrally formed tape deck or the combination of a plurality of record heads.
In addition, in the above-described embodiments, China ink is a liquid.Yet also can use at room temperature for solid-state be liquid China ink material when the room temperature.Thereby because can stablize black viscosity and provide stable injection being not less than 30 ℃ and the temperature that is not higher than 70 ℃ temperature range inner control China ink for the recording equipment of this model commonly used, so, can use the sort of printing ink that in this temperature range, is in a liquid state when tracer signal of the present invention during applicable to the printing ink of other type.In one of above-mentioned China ink, the printing ink state will absorb heat energy from the solid-state liquid state that becomes, and this just can prevent really that the temperature that causes because of heat energy from raising.Thereby another kind of ink material is the solid-state black evaporation that prevented when shelving.Under any situation, the service recorder signal produces heat energy, China ink is liquefied, and this China ink that has liquefied can be injected.Another kind of ink material is for beginning to be cured when time on its arrival recording materials.The present invention also uses such ink material, and promptly it becomes liquid state under the situation of using heat energy.Such China ink material also can be used as liquid state or solid-state material remains in the hole or groove of porous plate, and this content is that 56847/1979 and 71260/1985 Japanese patent application is disclosed by publication number.This plate is facing to electrothermal transducer.For above-mentioned ink material film carburetion system the most effectively.
Ink jet recording device can be used as messaging device such as computer or similar device, the duplicator that combines with image reader or similar device, have the outlet terminal that information connect, sent the facsimile machine etc. of function.
The present invention who describes with reference to structure disclosed herein is not limited to illustrated these details, and the application is intended to cover those and will be included within the improved purpose or modification within the scope of claim below and variation.
Claims (4)
1, a kind of ink jet recording device, comprise that one is used for the ink discharge device of ink-jet, one is used for holding the print cartridge that will be fed to the printing ink in the ink discharge device, China ink in the print cartridge is sent into the ink-feed channel of ink discharge device, with with printing ink forcibly as printing and from the ink discharge device ejection so that described ink discharge device from spraying the recovery device that recovers losing efficacy, it is characterized in that described recovery device is a kind of ink-jet effect that can repeat to force, once forcing ink ejection amount under the ink-jet effect greater than the recovery device of the internal capacity of described ink-feed channel.
2,, it is characterized in that it also comprises at least two filters that are arranged on the China ink between print cartridge and the ink discharge device according to the ink jet recording device of claim 1.
3, according to the ink jet recording device of claim 1, it is characterized in that it also comprises a filter that is arranged between print cartridge and the ink passage, and the blotting material that is arranged on the upstream and downstream of filter.
4,, it is characterized in that it also is arranged in the passage in order to limit the ink flow restraint device of ink flow according to the ink jet recording device of claim 1.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP048176/90 | 1990-02-28 | ||
| JP2048176A JP2783634B2 (en) | 1990-02-28 | 1990-02-28 | Ink jet recording device |
| JP095409/90 | 1990-04-11 | ||
| JP096832/90 | 1990-04-11 | ||
| JP9540990A JPH03293139A (en) | 1990-04-11 | 1990-04-11 | Recording head formed integrally with ink tank and ink jet recording device using the head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1055323A CN1055323A (en) | 1991-10-16 |
| CN1023094C true CN1023094C (en) | 1993-12-15 |
Family
ID=26388405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91102110 Expired - Fee Related CN1023094C (en) | 1990-02-28 | 1991-02-28 | Ink jet apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1023094C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7013780B2 (en) * | 2017-10-10 | 2022-02-01 | セイコーエプソン株式会社 | Liquid sprayer |
| CN108859413B (en) * | 2018-06-11 | 2020-10-20 | 深圳怡化电脑股份有限公司 | Ink jet device and control method for preventing ink jet device from being blocked |
| CN112842117A (en) * | 2021-02-03 | 2021-05-28 | 姚玉洪 | Paper extraction box capable of automatically reminding after roll paper is used up |
| CN114603998B (en) * | 2022-04-01 | 2023-05-05 | 联想图像(山东)科技有限公司 | Ink cartridge maintenance device and ink jet printing apparatus |
-
1991
- 1991-02-28 CN CN 91102110 patent/CN1023094C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1055323A (en) | 1991-10-16 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
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