CN104275937B - The excess flow protection device of a kind of work print cartridge and cyclic ink supply system - Google Patents
The excess flow protection device of a kind of work print cartridge and cyclic ink supply system Download PDFInfo
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- CN104275937B CN104275937B CN201310282473.0A CN201310282473A CN104275937B CN 104275937 B CN104275937 B CN 104275937B CN 201310282473 A CN201310282473 A CN 201310282473A CN 104275937 B CN104275937 B CN 104275937B
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Abstract
The invention discloses excess flow protection device and the cyclic ink supply system of a kind of work print cartridge; this excess flow protection device includes: at least one ink overflow print cartridge, power unit; when the ink in the print cartridge that works overflows, ink flows to ink overflow print cartridge by the ink passage between work print cartridge and ink overflow print cartridge；The input of power unit is connected with ink overflow print cartridge, and power unit is for discharging the ink in ink overflow print cartridge.Ink in ink overflow print cartridge is quickly discharged ink overflow print cartridge by power unit by this excess flow protection device; reach quickly to protect the purpose of work print cartridge; avoid the various problems that the ink overflow phenomenon of work print cartridge causes; whole cyclic ink supply system can be effectively protected; the ink such as avoiding spilling enters into the gas circuit in whole cyclic ink supply system; protect the components and parts in gas circuit, it is to avoid the ink the overflowed corrosion to whole cyclic ink supply system.
Description
Technical field
The invention belongs to the technical field that fluid flowing controls, be specifically related to a kind of work ink
The excess flow protection device of box and cyclic ink supply system.
Background technology
Ink jet-print head mainly has gravity ink supply and cyclic ink supply two ways at present, and these are two years old
The mode of kind is that the actual demand according to ink jet-print head uses, some ink jet-print head
Using gravity ink supply mode, some ink jet-print head uses cyclic ink supply mode.In ink-jet
Printing technology, generally uses in ink-jet printer and needs cyclic ink supply system to support
The ink jet-print head of series flow.Utilize ink circulation in ink jet-print head, permissible
Impurity in ink jet-print head and bubble etc. are taken away, prevents it from blocking inkjet printing with this
Head or impact print, and can also promote that thermal cycle ensures stablizing of ink viscosity simultaneously.
As it is shown in figure 1, prior art provides the cyclic ink supply system of a kind of crossfire work,
This cyclic ink supply system include main ink bucket 101, ink feed print cartridge 105, return ink print cartridge 106,
Degasification module 103, ink jet-print head 107, the ink outlet port of main ink bucket 101 is pump orifice,
The main ink pump orifice of bucket 101 is connected with the ink entrance of pump 102, pump 102 out of ink
Mouth is connected with the ink entrance of degasification module 103, the ink outlet port of degasification module 103 and ink feed
The ink entrance of print cartridge 105 is connected, the ink outlet port of ink feed print cartridge 105 and ink jet-print head 107
Ink entrance be connected, ink jet-print head 107 return Mo Kou with return ink print cartridge 106 ink feed
Mouth is connected, and the ink entrance returning black mouth and main ink bucket 101 returning ink print cartridge 106 is connected.With
Time, this cyclic ink supply system also includes an ink supply bucket 104, and ink supply bucket 104 is for master
Ink bucket 101 ink supply.Main ink bucket 101 is connected with negative pressure generating device, main ink bucket 101
The inside is a subnormal ambient, and negative pressure is relatively big, can be by ink from confession by this negative pressure
Ink bucket 104 is drawn in main ink bucket 101.Between ink supply bucket 104 and main ink bucket 101
One black valve is installed, when main ink bucket 101 liquid level is low, ink valve is opened, ink supply bucket
Ink in 104 is drawn in main ink bucket 101；When the ink in main ink bucket 101
When liquid level reaches requirement, closing ink valve, such ink just stops sucking.But sometimes
Wait this ink valve due to some faults, can not close tight completely, even if causing this ink valve to exist
Under the state closed, main ink bucket 101 is also at blotting, in thus causing main ink bucket 101
The liquid level of ink too high, thus there is ink overflow phenomenon.
During cyclic ink supply system worked well, ink is pressed into ink feed print cartridge by pump 102
In 105, in the way of pump ink, degasification module 103 carries out degasification to ink.Ink is from entering
By applying time ink print cartridge 106 of negative pressure after ink print cartridge 105 flow-through inkjet print 107
Swabbing action flow back to back ink print cartridge 106 in, be applied to ink feed print cartridge 105 by adjustment
With the pressure returned in ink print cartridge 106 adjust in ink jet-print head 107 flow velocity of ink with
And the point pressure of ink jet-print head 107.After ink is flowed into back ink print cartridge 106, pass through
The swabbing action of the main ink bucket 101 applying negative pressure flow back in main ink bucket 101.In circulation
In the ink feeding system course of work, due to by ink gasification, system shake affected or
The reasons such as person's system failure all can cause ink overflow phenomenon.
But owing to employing gas pressure in a large number to whole cyclic ink supply system in prior art
System is circulated control, so whole cyclic ink supply system also exists substantial amounts of gas circuit,
But ink enters in gas circuit due to the system failure often, thus the gas circuit in causing gas circuit
Device failure, causes ink to outflow, and UV ink (i.e. ultraviolet light solidified ink) has very
Strong corrosivity, can cause catastrophic effect to whole cyclic ink supply system.Typically in order to
The method that protection gas circuit is frequently used is increase Dewar bottle in gas circuit, but this method
And unreliable, it is impossible to automatically protect, it is desirable to have people guards constantly.The work of Dewar bottle
With being mounted in gas circuit pipeline, if it occur that during ink overflow, ink can first flow into vacuum
In bottle, by there being ink to judge whether ink overflow in observing Dewar bottle, but if do not have
Someone look at, and ink can overflow the most outward, continues ink overflow.Another protects gas circuit
Method be by use photoelectric sensor detection ink overflow, but photoelectric sensor can only be examined
Surveying transparent pipeline, when using UV ink, UV ink runs into ultraviolet and can solidify, institute
It is necessary for opaque with pipeline, uses photoelectric sensor and UV ink to be used not
Transparent pipeline is incompatible, it is impossible to realize the monitoring for UV ink.
Summary of the invention
The technical problem to be solved be for present in prior art above-mentioned not
Foot, it is provided that the excess flow protection device of a kind of work print cartridge and cyclic ink supply system, this overflow
The ink overflow of work print cartridge can be effectively protected by protection device, it is to avoid ink overflow is existing
As the various problems caused, whole cyclic ink supply system can be effectively protected.
Solve the technology of the present invention problem and offer one work print cartridge is provided
Excess flow protection device, comprising: at least one ink overflow print cartridge, power unit,
When the ink worked in print cartridge overflows, described ink by described work print cartridge and
Ink passage between described ink overflow print cartridge flows to described ink overflow print cartridge；
The input of described power unit is connected with described ink overflow print cartridge, described power unit
For the ink in described ink overflow print cartridge is discharged.
Preferably, it is provided with in detecting described ink overflow print cartridge in described ink overflow print cartridge
First level sensing unit of the liquid level of ink.
Preferably, described work print cartridge connects with ink supply bucket, in work print cartridge and ink supply
Ink supply switch element, described first level sensing list it is provided with on ink passage between Tong
First and described ink supply switch element electrically connects；
When described first level sensing unit detects the liquid of the ink in described ink overflow print cartridge
When position exceedes default liquid level, ink supply described in the most described first level sensing unit triggers is opened
Closing unit, described ink supply switch element proceeds to off-state from conducting state.
Preferably, described ink overflow print cartridge is provided with gas circuit mouth, described gas circuit mouth and extraneous gas
Road connects；Described extraneous gas circuit includes negative pressure generating unit, described negative pressure generating unit with
The gas circuit mouth of described ink overflow print cartridge connects, for applying negative pressure to described ink overflow print cartridge.
Preferably, the gas circuit mouth of described ink overflow print cartridge is provided with air circuit breaker unit, institute
State air circuit breaker unit for controlling the keying of described extraneous gas circuit, described first liquid level inspection
Survey unit to electrically connect with described air circuit breaker unit；
When described first level sensing unit detects the liquid of the ink in described ink overflow print cartridge
When position exceedes default liquid level, gas circuit described in the most described first level sensing unit triggers is opened
Closing unit, described air circuit breaker unit proceeds to off-state from conducting state, thus protects
Extraneous gas circuit.
Preferably, described first level sensing unit electrically connects with described power unit,
When described first level sensing unit detects that the liquid level of the ink in described ink overflow print cartridge surpasses
When crossing the liquid level preset, power unit described in the most described first level sensing unit triggers,
Ink in described ink overflow print cartridge is discharged by described power unit.
Preferably, described excess flow protection device also includes alarm unit, described first
Level sensing unit electrically connects with described alarm unit；
When described first level sensing unit detects the liquid of the ink in described ink overflow print cartridge
When position exceedes default liquid level, report to the police described in the most described first level sensing unit triggers single
Unit reports to the police.
Preferably, the output of described power unit connects with described work print cartridge, institute
State power unit for the ink in described ink overflow print cartridge is discharged to described work print cartridge
In.
Preferably, the ink passage between described power unit and described work print cartridge
On be provided with filter element.
Preferably, it is provided with in detecting described work print cartridge in described work print cartridge
Second level sensing unit of the liquid level of ink.
Preferably, described second level sensing unit electrically connects with described power unit,
When described second level sensing unit detects that the liquid level in described work print cartridge exceedes default
Liquid level time, power unit described in the most described second level sensing unit triggers, described dynamic
Power unit stops being discharged in described work print cartridge the ink in described ink overflow print cartridge.
Preferably, described power unit uses pump.
Preferably, described work print cartridge uses integrated setting with described ink overflow print cartridge,
Described work print cartridge is separated by barrier sheet with described ink overflow print cartridge.
The present invention also provides for a kind of cyclic ink supply system, including overflowing of above-mentioned work print cartridge
Stream protection device.
Preferably, described cyclic ink supply system also includes work print cartridge, described work ink
Box includes main ink bucket, ink feed print cartridge and returns ink print cartridge,
Described main ink bucket and described ink feed print cartridge by pipeline connection, described ink feed print cartridge with
Described time print cartridge is connected by ink jet-print head, described time print cartridge and described main ink bucket
By pipeline connection, in described main ink bucket, described ink feed print cartridge, described time print cartridge
Any one or the excess flow protection device of a several respectively corresponding described work print cartridge.
The ink overflow of work print cartridge can be carried out effectively by the excess flow protection device in the present invention
Protection, quickly discharges ink overflow print cartridge by power unit by the ink in ink overflow print cartridge,
Reach quickly to protect the purpose of work print cartridge, it is to avoid the ink overflow phenomenon of work print cartridge causes
Various problems, whole cyclic ink supply system can be effectively protected, such as, avoid excessive
The ink gone out enters into the gas circuit in whole cyclic ink supply system, protects the unit in gas circuit
Device, it is to avoid the ink overflowed is for the corrosion of whole cyclic ink supply system.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of common cyclic ink supply system；
Fig. 2 is the ink overflow print cartridge of the excess flow protection device of the work print cartridge in embodiment 2
Schematic diagram；
Fig. 3 is the ink overflow print cartridge of the excess flow protection device of the work print cartridge in embodiment 3
Schematic diagram；
Fig. 4 is the schematic diagram of the cyclic ink supply system of the work print cartridge in embodiment 4.
101,201-main ink bucket；102-pump；103-degasification module；104-ink supply bucket；
105,203-ink feed print cartridge；106,204-returns ink print cartridge；107,210-ink jet-print head；
202-first protects chamber；205-second protects chamber；206-the 3rd protects chamber；207-first is negative
Pressure generating unit；208-the second negative pressure generating unit；209-the 3rd negative pressure generating unit；211-
First pump；212-the second pump；213-the 3rd pump；301-ink overflow print cartridge；302-gas
Crossing；303-pump orifice；304-discharging opening for permitting discharging of the toner；305-the first level sensing unit；306、
401-works print cartridge；402-the first ink overflow print cartridge；403-the second ink overflow print cartridge；307、404-
Negative pressure generating unit；308,405-power unit；406-the first level sensing unit.
Detailed description of the invention
For making those skilled in the art be more fully understood that technical scheme, knot below
Close the drawings and specific embodiments the present invention is described in further detail.
Embodiment 1
The present embodiment provides the excess flow protection device of a kind of work print cartridge, comprising: at least
One ink overflow print cartridge, power unit,
When the ink worked in print cartridge overflows, described ink by described work print cartridge and
Ink passage between described ink overflow print cartridge flows to described ink overflow print cartridge；
The input of described power unit is connected with described ink overflow print cartridge, described power unit
For the ink in described ink overflow print cartridge is discharged.
Excess flow protection device in the present embodiment passes through power unit by the ink in ink overflow print cartridge
Water quickly discharges ink overflow print cartridge, reaches quickly to protect the purpose of work print cartridge, it is to avoid
The various problems that the ink overflow phenomenon of work print cartridge causes.
Embodiment 2
As in figure 2 it is shown, the present embodiment provides the excess flow protection device of a kind of work print cartridge,
Comprising: at least one ink overflow print cartridge 301, power unit 308,
When the ink in the print cartridge 306 that works overflows, described ink is by described work ink
Ink passage between box 306 and described ink overflow print cartridge 301 flows to described ink overflow print cartridge
301；
The input of described power unit 308 is connected with described ink overflow print cartridge 301, described
Power unit 308 is for discharging the ink in described ink overflow print cartridge 301.
In the present embodiment, work print cartridge 306 is for by ink feeding system ink supply, power list
Unit 308 specifically uses pump, ink overflow print cartridge 301 to act primarily as work print cartridge 306
Protective effect, the ink passage between work print cartridge 306 and ink overflow print cartridge 301 not only may be used
Using the ink passage as the ink between work print cartridge 306 and ink overflow print cartridge 301, and
And the gas circuit of the gas being also used as between work print cartridge 306 and ink overflow print cartridge 301 is logical
Road.When the ink in the print cartridge 306 that works does not overflows, work print cartridge 306 and ink overflow
Achieved the connection of gas between print cartridge 301 by ink passage, ink overflow print cartridge 301 with
Air pressure above work print cartridge 306 is identical；When the ink in the print cartridge 306 that works overflows,
Achieved the stream of ink by ink passage between work print cartridge 306 and ink overflow print cartridge 301
Logical；Flow to a certain degree when the ink in work print cartridge 306 overflows, no longer to ink overflow ink
Flowing in box 301, the print cartridge 306 that the most now works achieves again two with ink overflow print cartridge 301
The connection of the gas between individual print cartridge.Certainly, work print cartridge 306 and ink overflow print cartridge 301
Between can be respectively provided with ink passage and gas channels, such gas channels makes work
The gas circuit being always maintained at gas between print cartridge 306 with ink overflow print cartridge 301 connects.Ink is led to
Road can use one or a few pipeline, it would however also be possible to employ other attainable structure.
Gas channels can use one or a few pipeline, it would however also be possible to employ other attainable
Structure.In the present embodiment, the ink between work print cartridge 306 and ink overflow print cartridge 301 is led to
Road uses conduit, one end of this conduit to be connected with the high portion of work print cartridge 306, this conduit
Other end be connected with the high-end of ink overflow print cartridge 301.Ink passage is also gas circuit simultaneously
Passage, the amount of the pipeline can being greatly saved in whole excess flow protection device, thus simplify
The manufacturing process of excess flow protection device.
Ink overfill in work print cartridge 306 is overflowed, ink by work print cartridge 306 with
Ink passage between ink overflow print cartridge 301 flows in ink overflow print cartridge 301, when ink overflow print cartridge
When the liquid level of the ink in 301 exceedes preset value, then stop to work print cartridge 306 ink supply,
And disconnect the gas circuit mouth of ink overflow print cartridge 301, check the fault of whole ink feeding system.Treat event
After barrier is got rid of, then by pump, the ink in ink overflow print cartridge 301 is discharged, herein for
The switch of pump is that the mode manually controlled is carried out.Manually control, permissible
Give the time checking whole ink feeding system fault that operator is sufficient, it is to avoid whole overflow
Protection device also works under fault.
Preferably, it is provided with in described ink overflow print cartridge 301 for detecting described ink overflow ink
Liquid level the first level sensing unit 305 of ink in box 301.In the present embodiment, the first liquid
Position detector unit 305 specifically uses liquid level sensor.
Preferably, described ink overflow print cartridge 301 is provided with gas circuit mouth, and described gas circuit mouth is with outer
Boundary's gas circuit connection, described extraneous gas circuit includes negative pressure generating unit 307, and described negative pressure occurs
Unit 307 is connected with the gas circuit mouth of described ink overflow print cartridge 301, for described ink overflow ink
Box 301 applies negative pressure.In ink jet printing or inkjet printing, due to each by controlling
The difference in height of individual work print cartridge 306 controls ink at the flowing of whole system and flow velocity
Difficulty is higher, by controlling negative pressure and can well control the flowing of ink and ink-jet being beaten
The point pressure of print head, thus realize one preferably to ink.Due to ink overflow print cartridge 301 with
Achieved the connection in gas circuit between work print cartridge 306 by ink passage, overflow by giving
Ink print cartridge 301 applies negative pressure, can control simultaneously negative pressure value in ink overflow print cartridge 301 with
And the negative pressure value in work print cartridge 306.It is possible not only to control ink overflow print cartridge 301 and work
Pressure in print cartridge 306 is consistent, and can be by controlling bearing in work print cartridge 306
Pressure value, the flowing realizing ink for whole ink feeding system provides power.
Preferably, the gas circuit mouth of described ink overflow print cartridge 301 is provided with air circuit breaker unit,
Described air circuit breaker unit is for controlling the keying of described extraneous gas circuit, described first liquid level
Detector unit 305 electrically connects with described air circuit breaker unit；
When described first level sensing unit 305 detects in described ink overflow print cartridge 301
When the liquid level of ink exceedes default liquid level, the most described first level sensing unit 305 touches
Sending out air circuit breaker unit described, described air circuit breaker unit proceeds to disconnect shape from conducting state
State, thus protect extraneous gas circuit.After the gas circuit in ink overflow print cartridge 301 is cut-off, by
In spilling over the ink in ink overflow print cartridge 301 at ink overflow print cartridge 301 from work print cartridge 306
Middle meeting occupies certain space, thus ceaselessly increases the pressure in ink overflow print cartridge 301,
Can slow down or avoid the ink in work print cartridge 306 to continue the phenomenon of ink overflow.
Preferably, described work print cartridge 306 uses one with described ink overflow print cartridge 301
Changing and arrange, described work print cartridge 306 is separated by barrier sheet with described ink overflow print cartridge 301
Open.Certainly, work print cartridge 306 can also be arranged with ink overflow print cartridge 301 split.Such as Fig. 2
Shown in, ink overflow print cartridge 301 is provided with discharging opening for permitting discharging of the toner 304, pump orifice 303, gas circuit mouth 302,
In the present embodiment, the gas circuit mouth 302 of ink overflow print cartridge 301 is arranged on ink overflow print cartridge 301
High portion, ink overflow print cartridge 301 realizes gas circuit with the external world and connects.Described negative pressure generating unit
It is connected by pipeline between 307 with described ink overflow print cartridge 301, described pipeline and described ink overflow
The interface position of print cartridge 301 is gas circuit mouth 302.The input of described power unit 308 with
Connected by pipeline between ink overflow print cartridge 301, described pipeline and described ink overflow print cartridge 301
Interface position be discharging opening for permitting discharging of the toner 304.Due between work print cartridge 306 and ink overflow print cartridge 301
Being provided with ink passage, this ink passage is also gas channels, so work print cartridge 306
Also correspond to be connected with extraneous gas circuit by the gas circuit mouth 302 of ink overflow print cartridge 301.Ink overflow
Ink passage between print cartridge 301 and work print cartridge 306 and connecing in ink overflow print cartridge 301
Mouth position is the pump orifice 303 of ink overflow print cartridge 301.This work print cartridge 306 and ink overflow print cartridge
301 use integrated setting can be greatly saved raw material, and add overflow protection dress
The stability put, and be easy to work print cartridge 306 and pick and place while ink overflow print cartridge 301.
Preferably, described work print cartridge 306 connects with ink supply bucket, at work print cartridge 306
And it is provided with ink supply switch element, described first liquid level on the ink passage between ink supply bucket
Detector unit 305 electrically connects with described ink supply switch element；
When described first level sensing unit 305 detects in described ink overflow print cartridge 301
When the liquid level of ink exceedes default liquid level, the most described first level sensing unit 305 touches
Sending out ink supply switch element described, described ink supply switch element proceeds to disconnect shape from conducting state
State.By stopping ink supply bucket in time to work print cartridge 306 ink supply, cut-out work print cartridge 306
In ink source, thus avoid continuation ink overflow.
Preferably, described first level sensing unit 305 and described power unit 308
Electrical connection, when described first level sensing unit 305 detects described ink overflow print cartridge 301
In the liquid level of ink when exceeding default liquid level, the most described first level sensing unit 305
Triggering described power unit 308, described power unit 308 is by described ink overflow print cartridge 301
In ink discharge, it is achieved thereby that the automation control of the switch for power unit 308
System.In the present embodiment, the first level sensing unit 305 specifically uses the first level sensing
Device.Ink in work print cartridge 306, because a variety of causes starts upwards to overflow, works as work
Between liquid level arrival work print cartridge 306 and the ink overflow print cartridge 301 of the ink in print cartridge 306
Ink passage time, work print cartridge 306 in ink can flow to overflow by this ink passage
In ink print cartridge 301.Along with increasing of the ink in ink overflow print cartridge 301, ink overflow print cartridge 301
In the liquid level of ink begin to ramp up, when the first liquid level sensor detects ink overflow print cartridge 301
In ink liquid level arrive preset liquid level time, the most described first level sensing unit 305
Triggering described power unit 308, described power unit 308 is by described ink overflow print cartridge 301
In ink discharge.Ink overflow print cartridge 301 can be resisted because ink feeding system breaks down and draws
Play work print cartridge 306 and ink overflow phenomenon, or the ink overflow phenomenon that temperature Change causes occur.
Now, the cyclic ink supply system at work print cartridge 306 place is likely present fault, permissible
Manually shut down, then cyclic ink supply system is checked.
Preferably, described excess flow protection device also includes alarm unit, described first
Level sensing unit 305 electrically connects with described alarm unit；
When described first level sensing unit 305 detects in described ink overflow print cartridge 301
When the liquid level of ink exceedes default liquid level, the most described first level sensing unit 305 touches
Send out alarm unit described and report to the police.By reporting to the police so that operating personnel find ink supply in time
There is ink overflow phenomenon in system.In the present embodiment, alarm unit specifically uses audible-visual annunciator.
Preferably, the output of described power unit 308 and described work print cartridge 306
Connection, described power unit 308 is for discharging the ink in described ink overflow print cartridge 301
In described work print cartridge 306.In the present embodiment, power unit 308 specifically uses ink
Pump.Directly the ink in ink overflow print cartridge 301 is discharged to work by power unit 308
In print cartridge 306, the ink in ink overflow print cartridge 301 can be avoided the most outwards to overflow so that
The ink overflowed from work print cartridge 306 is not wasted, and has reached good and has reclaimed profit
With.
Certainly, described ink overflow print cartridge 301 is detected when described first level sensing unit 305
In the liquid level of ink when exceeding default liquid level, the most described first level sensing unit 305
Described ink supply switch element can be triggered simultaneously and proceed to off-state from conducting state, trigger
Described air circuit breaker unit proceeds to off-state from conducting state, triggers power unit 308
Ink in described ink overflow print cartridge 301 is discharged.
Preferably, at the ink between print cartridge 306 that works described in described power unit 308
Filter element it is provided with on paths.In the present embodiment, described filter element specifically uses
Filter.Ink in ink overflow print cartridge 301 is arranged by power unit 308 by ink passage
Go out in described work print cartridge 306, owing to the ink in work print cartridge 306 can be used,
And the ink in ink overflow print cartridge 301 is likely due to what various abnormal conditions were overflowed, hold
It is easily introduced impurity, so needing the ink from ink overflow print cartridge 301 is being entered into work
Filter before print cartridge 306.
Preferably, it is provided with in described work print cartridge 306 for detecting described work ink
Second level sensing unit of the liquid level of ink in box 306.In the present embodiment, the second liquid
Position detector unit specifically uses liquid level sensor.
Preferably, described second level sensing unit is electrically connected with described power unit 308
Connect, when described second level sensing unit detects the liquid level in described work print cartridge 306
When exceeding default liquid level, power unit described in the most described second level sensing unit triggers
308, described power unit 308 stops being discharged to the ink in described ink overflow print cartridge 301
In described work print cartridge 306.It is of course also possible to by power unit 308 and work
Arranging a switch valve on ink passage between print cartridge 306, this switch valve connects
Another one ink passage, can be by the ink in ink overflow print cartridge 301 by this ink passage
Water is discharged to the place outside ink overflow print cartridge 301 and work print cartridge 306.When the second liquid level
Detector unit triggers described power unit 308 and stops the ink in described ink overflow print cartridge 301
After water is discharged to described work print cartridge 306 by ink passage, then this switch valve conducting
Another one ink passage, is discharged to ink overflow print cartridge 301 by the ink in ink overflow print cartridge 301
With the place outside work print cartridge 306.
The ink overflow of work print cartridge 306 can be carried out by the excess flow protection device in the present embodiment
It is effectively protected, by power unit 308 by quick for the ink in ink overflow print cartridge 301
Discharge ink overflow print cartridge, reach quickly to protect the purpose of work print cartridge 306, it is to avoid work
The various problems that the ink overflow phenomenon of print cartridge 306 causes.This excess flow protection device is not only real
Show a kind of simple protection, but also achieve Automated condtrol and protection, Ke Yishi
Automatically protect in the case of now guarding without operating personnel.This excess flow protection device will overflow
Ink in ink print cartridge 301 is discharged in work print cartridge 306 by power unit 308 again,
Avoid the waste of ink.
Embodiment 3
As it is shown on figure 3, the difference of the present embodiment and embodiment 2 is: overflow protection dress
Putting and include at least two ink overflow print cartridge, when ink overflow print cartridge is two, wherein, one overflows
Ink print cartridge is the first ink overflow print cartridge 402, and an ink overflow print cartridge is the second ink overflow print cartridge 403,
Led to by ink between described first ink overflow print cartridge 402 and described work print cartridge 401
Road connects；It is provided with ink between described first ink overflow print cartridge 402 and described work print cartridge 401
Paths, when the ink worked in print cartridge 401 overflows, described ink is by described the
Ink passage between one ink overflow print cartridge 402 and described work print cartridge 401 flows to described
One ink overflow print cartridge 402；
Described second ink overflow print cartridge 403 is provided with gas circuit mouth；
By ink between described second ink overflow print cartridge 403 and described first ink overflow print cartridge 402
Paths connects；Described second ink overflow print cartridge 403 and described first ink overflow print cartridge 402 it
Between be provided with ink passage, when in the first ink overflow print cartridge 402 ink overflow time, described ink
Water is by the ink between described second ink overflow print cartridge 403 and described first ink overflow print cartridge 402
Paths flows to described second ink overflow print cartridge 403；
The input of described power unit 405 is connected with described second ink overflow print cartridge 403,
Described power unit 405 is for discharging the ink in described second ink overflow print cartridge 403.
Preferably, described excess flow protection device also includes negative pressure generating unit 404,
Described negative pressure generating unit 404 is connected with the gas circuit mouth of described ink overflow print cartridge, for institute
State ink overflow print cartridge and apply negative pressure.Described negative pressure generating unit 404 is by the second ink overflow print cartridge
Gas circuit mouth and the second ink overflow print cartridge 403 of 403 connect.
Preferably, it is provided with the first level sensing unit in the second ink overflow print cartridge 403
406。
By arranging two ink overflow print cartridges in excess flow protection device, whole overflowing can be strengthened
The cushioning effect of stream protection device is when the ink in the print cartridge 401 that works overflows, permissible
Once buffered by the first ink overflow print cartridge 402, then by the second ink overflow print cartridge 403
Again buffered, and increased cushion space.It is of course possible to as required or empty
Between size, quantity and the volume of ink overflow print cartridge in excess flow protection device are rationally set.
Embodiment 4
As shown in Figure 4, this enforcement provides a kind of cyclic ink supply system, including embodiment 1～3
In work print cartridge excess flow protection device.
Preferably, described cyclic ink supply system includes work print cartridge, described work print cartridge
Including main ink bucket 201, ink feed print cartridge 203 and time ink print cartridge 204,
Described main ink bucket 201 with described ink feed print cartridge 203 by pipeline connection, described in enter
Ink print cartridge 203 is connected by ink jet-print head with described time print cartridge 204, described Hui Mo
Print cartridge 204 and described main ink bucket 201 are by pipeline connection, described main ink bucket 201, described
Overflowing of a corresponding described work print cartridge distinguished by ink feed print cartridge 203, described time print cartridge 204
Stream protection device.The excess flow protection device of the most main ink bucket 201 correspondence is referred to as main ink bucket and overflows
Stream protection device, the excess flow protection device of ink feed print cartridge 203 correspondence is referred to as ink feed print cartridge and overflows
Stream protection device, the excess flow protection device of time ink print cartridge 204 correspondence is referred to as back ink print cartridge and overflows
Stream protection device.
Preferably, the pipeline between described main ink bucket 201 and described ink feed print cartridge 203
On be provided with degasification module, described degasification module for from main ink bucket 201 flow into ink feed
The ink of print cartridge 203 carries out degasification.
Described main ink bucket excess flow protection device, ink feed print cartridge excess flow protection device, Hui Momo
Box excess flow protection device is excess flow protection device, and these excess flow protection devices all include:
At least one ink overflow print cartridge, power unit, wherein,
When the ink worked in print cartridge overflows, described ink by described work print cartridge and
Ink passage between described ink overflow print cartridge flows to described ink overflow print cartridge；
The input of described power unit is connected with described ink overflow print cartridge, described power unit
For the ink in described ink overflow print cartridge is discharged.
In the present embodiment, the work print cartridge in main ink bucket excess flow protection device specifically uses master
Ink bucket 201, ink overflow print cartridge specifically uses the first protection chamber 202, and power unit specifically uses
First pump 211.It is provided with ink passage between main ink bucket 201 and the first protection chamber 202,
When the ink in main ink bucket 201 overflows, described ink is by main ink bucket 201 and first
Ink passage between protection chamber 202 flows to the first protection chamber 202.
Preferably, the first protection chamber 202 is provided with gas circuit mouth, this gas circuit mouth and first negative
Pressure generating unit 207 connects, and the first negative pressure generating unit 207 is for the first protection chamber
202 apply negative pressure.
Preferably, the first protection chamber 202 is provided with discharging opening for permitting discharging of the toner, the first pump 211 defeated
Entering end to be connected with the first protection chamber 202 by discharging opening for permitting discharging of the toner, the first pump 211 is used for the
Ink in one protection chamber 202 is discharged.
Preferably, the output of the first pump 211 is connected with main ink bucket 201, and first
Pump 211 is for being discharged to the ink in the first protection chamber 202 in main ink bucket 201.
Preferably, it is provided with the first liquid level sensor in the first protection chamber 202.
Preferably, the gas circuit mouth in the first protection chamber 202 is provided with the first air circuit breaker,
First liquid level sensor and the electrical connection of the first air circuit breaker, when described first liquid level sensor
Detect when the liquid level of the ink in the first protection chamber 202 exceedes default liquid level, then
One liquid level sensor triggers the first air circuit breaker, and the first air circuit breaker proceeds to from conducting state
To off-state, now the first protection chamber 202 is not led with the first negative pressure generating unit 207
Logical.
Preferably, the first liquid level sensor and the first pump 211 electrically connect, when first
Liquid level sensor detects that the liquid level of the ink in the first protection chamber 202 exceedes default liquid
During position, then the first liquid level sensor triggers the first pump 211, and the first pump 211 is by first
Ink in protection chamber 202 is discharged.
Preferably, main ink bucket excess flow protection device also includes the first alarm, the first liquid
Level sensor and the electrical connection of the first alarm；When the first liquid level sensor detects the first guarantor
Protect the liquid level of the ink in chamber 202 when exceeding default liquid level, then the first liquid level sensor
Trigger the first alarm equipment alarm.
Preferably, the output of the first pump 211 is by ink passage and main ink bucket 201
Connection, the ink passage between the first pump 211 and main ink bucket 201 was provided with
Filter.
Preferably, it is provided with the second liquid level sensor in main ink bucket 201.
Preferably, the second liquid level sensor and the first pump 211 electrically connect, when second
Liquid level sensor detects the liquid level in main ink bucket 201 when exceeding default liquid level, then the
Two liquid level sensors trigger the first pump 211, and the first pump 211 stops main ink bucket 201
In ink be discharged to main ink bucket 201 in.
Preferably, main ink bucket 201 and the first protection chamber 202 use integrated setting,
Separated by barrier sheet between main ink bucket 201 and the first protection chamber 202.
Preferably, described ink supply bucket (this ink supply bucket is not drawn in the diagram) is by ink
Paths connects with main ink bucket 201, and the ink between ink supply bucket and main ink bucket 201 is led to
Being provided with ink supply switch element on road, described first liquid level sensor switchs with described ink supply
Unit electrically connects；
The liquid of the ink in described first liquid level sensor detects described main ink bucket 201
When position exceedes default liquid level, the most described first liquid level sensor triggers described ink supply switch
Unit, described ink supply switch element proceeds to off-state from conducting state.By stopping in time
Only ink supply, cuts off the ink source in main ink bucket, thus avoids continuation ink overflow.This reality
Executing in example, ink supply switch element specifically uses ink valve.
The work print cartridge in ink feed print cartridge excess flow protection device in the present embodiment specifically uses
Ink feed print cartridge 203, ink overflow print cartridge specifically uses the second protection chamber 205, and power unit is concrete
Use the second pump 212.It is provided with ink between ink feed print cartridge 203 and the second protection chamber 205
Passage, when the ink in ink feed print cartridge 203 overflows, described ink passes through ink feed print cartridge
203 and second protect the ink passage between chamber 205 to flow to the second protection chamber 205.
Preferably, the second protection chamber 205 is provided with gas circuit mouth, this gas circuit mouth and second negative
Pressure generating unit connects, and the second negative pressure generating unit is for applying to the second protection chamber 205
Negative pressure.
Preferably, the second protection chamber 205 is provided with discharging opening for permitting discharging of the toner, the second pump 212 defeated
Entering end to be connected with the second protection chamber 205 by discharging opening for permitting discharging of the toner, the second pump 212 is used for the
Ink in two protection chambeies 205 is discharged.
Preferably, the output of the second pump 212 is connected with ink feed print cartridge 203, the
Two pumps 212 are for being discharged to the ink in the second protection chamber 205 in main ink bucket 201.
Preferably, it is provided with the 3rd liquid level sensor in the second protection chamber 205.
Preferably, the gas circuit mouth in the second protection chamber 205 is provided with the second air circuit breaker,
3rd liquid level sensor and the electrical connection of the second air circuit breaker, when described 3rd liquid level sensor
Detect when the liquid level of the ink in the second protection chamber 205 exceedes default liquid level, then
Three liquid level sensors trigger the second air circuit breaker, and the second air circuit breaker proceeds to from conducting state
To off-state, now the second protection chamber 205 is not turned on the second negative pressure generating unit.
Preferably, the 3rd liquid level sensor and the second pump 212 electrically connect, when the 3rd
Liquid level sensor detects that the liquid level of the ink in the second protection chamber 205 exceedes default liquid
During position, then the 3rd liquid level sensor triggers the second pump 212, and the second pump 212 is by second
Ink in protection chamber 205 is discharged.
Preferably, ink feed print cartridge excess flow protection device also includes the second alarm, the 3rd
Liquid level sensor and the electrical connection of the second alarm；When the 3rd liquid level sensor detects second
When the liquid level of the ink in protection chamber 205 exceedes default liquid level, then the 3rd level sensing
Device triggers the second alarm equipment alarm.
Preferably, the output of the second pump 212 is by ink passage and ink feed print cartridge
203 connections, the ink passage between the second pump 212 and ink feed print cartridge 203 is arranged
There is filter.
Preferably, it is provided with the 4th liquid level sensor in ink feed print cartridge 203.
Preferably, the 4th liquid level sensor and the second pump 212 electrically connect, when the 4th
Liquid level sensor detects when the liquid level in ink feed print cartridge 203 exceedes default liquid level, then
4th liquid level sensor triggers the second pump 212, and the second pump 212 stops ink feed print cartridge
Ink in 203 is discharged in main ink bucket 201.
Preferably, ink feed print cartridge 203 and the second protection chamber 205 use integrated setting,
Separated by barrier sheet between ink feed print cartridge 203 and the second protection chamber 205.
The work print cartridge returned in ink print cartridge excess flow protection device in the present embodiment specifically uses
Returning ink print cartridge 204, ink overflow print cartridge specifically uses the 3rd protection chamber 206, and power unit is concrete
Use the 3rd pump 213.Return and be provided with ink between ink print cartridge 204 and the 3rd protection chamber 206
Passage, when the ink returned in ink print cartridge 204 overflows, described ink is by returning ink print cartridge
204 and the 3rd protect the ink passage between chamber 206 to flow to the 3rd protection chamber 206.
Preferably, the 3rd protection chamber 206 is provided with gas circuit mouth, this gas circuit mouth and the 3rd negative
Pressure generating unit 209 connects, and the 3rd negative pressure generating unit 209 is for the 3rd protection chamber
206 apply negative pressure.
Preferably, the 3rd protection chamber 206 is provided with discharging opening for permitting discharging of the toner, the 3rd pump 213 defeated
Entering end to be connected with the 3rd protection chamber 206 by discharging opening for permitting discharging of the toner, the 3rd pump 213 is used for the
Ink in three protection chambeies 206 is discharged.
Preferably, the output of the 3rd pump 213 is connected with returning ink print cartridge 204, the
Three pumps 213 are for being discharged to the ink in the 3rd protection chamber 206 in main ink bucket 201.
Preferably, it is provided with the 5th liquid level sensor in the 3rd protection chamber 206.
Preferably, the gas circuit mouth in the 3rd protection chamber 206 is provided with the 3rd air circuit breaker,
5th liquid level sensor and the electrical connection of the 3rd air circuit breaker, when described 5th liquid level sensor
Detect when the liquid level of ink in the 3rd protection chamber 206 exceedes default liquid level, then the
Five liquid level sensors trigger the 3rd air circuit breaker, and the 3rd air circuit breaker proceeds to from conducting state
To off-state, now the 3rd protection chamber 206 is not led with the 3rd negative pressure generating unit 209
Logical.
Preferably, the 5th liquid level sensor and the 3rd pump 213 electrically connect, when the 5th
Liquid level sensor detects that the liquid level of the ink in the 3rd protection chamber 206 exceedes default liquid
During position, then the 5th liquid level sensor triggers the 3rd pump 213, and the 3rd pump 213 is by the 3rd
Ink in protection chamber 206 is discharged.
Preferably, return ink print cartridge excess flow protection device and also include the 3rd alarm, the 5th
Liquid level sensor and the electrical connection of the 3rd alarm；When the 5th liquid level sensor detects the 3rd
When the liquid level of the ink in protection chamber 206 exceedes default liquid level, then the 5th level sensing
Device triggers the 3rd alarm equipment alarm.
Preferably, the output of the 3rd pump 213 is by ink passage and time ink print cartridge
204 connections, the ink passage between the 3rd pump 213 and time ink print cartridge 204 is arranged
There is filter.
Preferably, it is provided with the 6th liquid level sensor in returning ink print cartridge 204.
Preferably, the 6th liquid level sensor and the 3rd pump 213 electrically connect, when the 6th
Liquid level sensor detects back when the liquid level in ink print cartridge 204 exceedes default liquid level, then
6th liquid level sensor triggers the 3rd pump 213, and the 3rd pump 213 stops inciting somebody to action back ink print cartridge
Ink in 204 is discharged in main ink bucket 201.
Preferably, return ink print cartridge 204 and the 3rd protection chamber 206 use integrated setting,
Return and separated by barrier sheet between ink print cartridge 204 and the 3rd protection chamber 206.
Main ink bucket 201 and the ink feed print cartridge excess flow protection device of main ink bucket excess flow protection device
Ink feed print cartridge 203 between by ink channel connection, this ink passage is provided with
Degasification module, this degasification module is for entering the ink flowed out from main ink bucket 201
Ink in ink feed print cartridge 203 carries out degasification.Second negative pressure generating unit can control
Environmental pressure P in ink feed print cartridge excess flow protection device2, occur by changing the second negative pressure
The generation pressure of unit, thus it is possible to vary the environmental pressure P in the second protection chamber 2052.The
The gas pressure that two negative pressure generating units generate is accessed by the protection in the second protection chamber 205
In ink feed print cartridge 203, the second protection chamber 205 not only acts as and prevents ink from ink feed ink
During suck-back enters degasification module in box 203, also act as the effect of gas buffer bottle, maintain into
Pressure stability in ink print cartridge 203.
The ink feed print cartridge 203 of ink feed print cartridge excess flow protection device is with ink jet-print head 210 even
Logical, ink feed print cartridge 203 is above ink jet-print head 210, in ink feed print cartridge 203
Ink is flowed in ink jet-print head 210 by Action of Gravity Field.
Return ink print cartridge excess flow protection device return ink print cartridge 204 and ink jet-print head 210 it
Between by ink channel connection, return ink print cartridge 204 above ink jet-print head 210,
The negative pressure produced in relying on back ink print cartridge excess flow protection device is by ink jet-print head 210
Ink is drawn into back in ink print cartridge 204.3rd negative pressure generating unit 209 can control back
Environmental pressure P in the excess flow protection device of ink print cartridge 2043, by changing the 3rd negative pressure
The generation pressure of generating unit 209, thus it is possible to vary the environment pressure in the 3rd protection chamber 206
Power P3.The gas pressure that 3rd negative pressure generating unit 209 generates is by the 3rd protection chamber 206
Protection be linked into back in ink print cartridge 204, the 3rd protection chamber 206 not only acts as and prevents ink
Water during suck-back enters degasification module from ink jet-print head 210, also acts as gas buffer bottle
Effect, maintains back the pressure stability in ink print cartridge 204.
Return time ink print cartridge 204 and the bucket overflow of main ink of the excess flow protection device of ink print cartridge 204
The ink jet-print head 210 of protection device is by ink channel connection, on this ink passage
Being provided with degasification module, this degasification module is for the ink that will flow out from ink jet-print head 210
The ink that water i.e. will go into back in ink print cartridge 204 carries out degasification.First negative pressure occurs single
Unit 207 can control the environmental pressure P in the excess flow protection device of main ink bucket 2011, logical
Cross the generation pressure changing the first negative pressure generating unit 207, thus it is possible to vary the first protection chamber
Environmental pressure P in 2021.The gas pressure that first negative pressure generating unit 207 generates leads to
The protection crossing the first protection chamber 202 is linked in main ink bucket 201, the first protection chamber 202
Not only act as and prevent ink from entering in degasification module from returning suck-back ink print cartridge 204, also act as
The effect of gas buffer bottle, maintains the pressure stability in main ink bucket 201.
In this example between main ink bucket 201 and ink feed print cartridge 203, time ink print cartridge 204
Ink pipeline is not given, and adding other components and parts in ink pipeline wherein will not shadow
Ring the normal work to protection device.
Main ink bucket 201 and the ink feed print cartridge excess flow protection device of main ink bucket excess flow protection device
Ink feed print cartridge 203 between connected by ink passage, this ink passage is provided with
Degasification module and pump, this degasification module is for the ink that will flow out from main ink bucket 201
I.e. will go into the ink in ink feed print cartridge 203 and carry out degasification, this pump is by main ink bucket
Ink in 201 is pumped into ink feed print cartridge 203 and provides power.Certainly, overflow in whole circulation
Stream protection system also has other degasification module.
The ink overflow of work print cartridge can be carried out effectively by the excess flow protection device in the present embodiment
Protection, by power unit, the ink in ink overflow print cartridge is quickly discharged ink overflow print cartridge,
Reach the purpose of quick protection work print cartridge, it is to avoid the ink overflow phenomenon of work print cartridge is drawn
The various problems risen, can be effectively protected whole cyclic ink supply system, such as, avoid
The ink overflowed enters into the gas circuit in whole cyclic ink supply system, protects in gas circuit
Components and parts, it is to avoid the ink overflowed is for the corrosion of whole cyclic ink supply system.This follows
Ring ink feeding system not only achieves a kind of simple protection, but also achieves automation
Control and protection, it is possible to achieve to whole cyclic ink supply in the case of guarding without operating personnel
The protection of system.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present
And the illustrative embodiments used, but the invention is not limited in this.For ability
For those of ordinary skill in territory, in the situation without departing from spirit and substance of the present invention
Under, various modification and improvement can be made, these modification and improvement are also considered as the present invention's
Protection domain.
Claims (10)
1. the excess flow protection device of the print cartridge that works, it is characterised in that comprising: extremely
Few ink overflow print cartridge, a power unit,
When the ink worked in print cartridge overflows, described ink by described work print cartridge and
Ink passage between described ink overflow print cartridge flows to described ink overflow print cartridge；
The input of described power unit is connected with described ink overflow print cartridge, described power unit
For the ink in described ink overflow print cartridge is discharged；
The liquid level of ink in detecting described ink overflow print cartridge it is provided with in described ink overflow print cartridge
The first level sensing unit；
Described first level sensing unit electrically connects with described power unit, when described first
Level sensing unit detects that the liquid level of the ink in described ink overflow print cartridge exceedes default liquid
During position, power unit described in the most described first level sensing unit triggers, described power list
Ink in described ink overflow print cartridge is discharged by unit.
The excess flow protection device of work print cartridge the most according to claim 1, its feature
Being, described ink overflow print cartridge is provided with gas circuit mouth, and described gas circuit mouth connects with extraneous gas circuit；
Described extraneous gas circuit includes negative pressure generating unit, described negative pressure generating unit and described ink overflow
The gas circuit mouth of print cartridge connects, for applying negative pressure to described ink overflow print cartridge.
The excess flow protection device of work print cartridge the most according to claim 2, its feature
Being, the gas circuit mouth of described ink overflow print cartridge is provided with air circuit breaker unit, and described gas circuit is opened
Close unit for controlling the keying of described extraneous gas circuit, described first level sensing unit with
Described air circuit breaker unit electrically connects；
When described first level sensing unit detects the liquid of the ink in described ink overflow print cartridge
When position exceedes default liquid level, gas circuit described in the most described first level sensing unit triggers is opened
Closing unit, described air circuit breaker unit proceeds to off-state from conducting state, thus protects
Extraneous gas circuit.
The excess flow protection device of work print cartridge the most according to claim 1, its feature
It is, also includes alarm unit, described first level sensing unit and described alarm unit
Electrical connection；
When described first level sensing unit detects the liquid of the ink in described ink overflow print cartridge
When position exceedes default liquid level, report to the police described in the most described first level sensing unit triggers single
Unit reports to the police.
5. according to the overflow protection dress of the work print cartridge described in Claims 1 to 4 any one
Put, it is characterised in that the output of described power unit connects with described work print cartridge,
Described power unit is for being discharged to described work print cartridge by the ink in described ink overflow print cartridge
In.
The excess flow protection device of work print cartridge the most according to claim 5, its feature
It is, the ink passage between described power unit and described work print cartridge is provided with
Filter element.
The excess flow protection device of work print cartridge the most according to claim 5, its feature
It is, in described work print cartridge, is provided with the liquid of ink in detecting described work print cartridge
Second level sensing unit of position.
The excess flow protection device of work print cartridge the most according to claim 7, its feature
Being, described second level sensing unit electrically connects with described power unit, when described
Two level sensing unit detect that the liquid level in described work print cartridge exceedes default liquid level
Time, power unit described in the most described second level sensing unit triggers, described power unit
Stop being discharged in described work print cartridge the ink in described ink overflow print cartridge.
9. a cyclic ink supply system, it is characterised in that include that claim 1～8 is any
The excess flow protection device of one described work print cartridge.
Cyclic ink supply system the most according to claim 9, it is characterised in that bag
Including work print cartridge, described work print cartridge includes main ink bucket, ink feed print cartridge and returns ink print cartridge,
Described main ink bucket and described ink feed print cartridge by pipeline connection, described ink feed print cartridge with
Described time print cartridge is connected by ink jet-print head, described time print cartridge and described main ink bucket
By pipeline connection, in described main ink bucket, described ink feed print cartridge, described time print cartridge
Any one or the excess flow protection device of a several respectively corresponding described work print cartridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310282473.0A CN104275937B (en) | 2013-07-05 | 2013-07-05 | The excess flow protection device of a kind of work print cartridge and cyclic ink supply system |
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| CN201310282473.0A CN104275937B (en) | 2013-07-05 | 2013-07-05 | The excess flow protection device of a kind of work print cartridge and cyclic ink supply system |
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| CN104275937B true CN104275937B (en) | 2016-09-07 |
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| CN201310282473.0A Expired - Fee Related CN104275937B (en) | 2013-07-05 | 2013-07-05 | The excess flow protection device of a kind of work print cartridge and cyclic ink supply system |
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| CN106608112B (en) * | 2015-10-21 | 2017-12-29 | 北大方正集团有限公司 | A kind of switch voltage-stabilizing device and method |
| CN106515221A (en) * | 2016-09-29 | 2017-03-22 | 深圳市汉拓数码有限公司 | Intelligent ink supply device with multi-protection function and implementation method thereof |
| CN106827821B (en) * | 2017-03-30 | 2019-01-22 | 西安德高印染自动化工程有限公司 | A kind of totally-enclosed double negative-pressure cyclic ink feeding systems of Digital ink-jet printer |
| JP6987552B2 (en) * | 2017-07-07 | 2022-01-05 | キヤノン株式会社 | Liquid discharge head and liquid discharge device |
| US11298944B2 (en) * | 2018-01-25 | 2022-04-12 | Hewlett-Packard Development Company, L.P. | Tanks for print cartridge |
| CN110293763B (en) * | 2018-03-21 | 2020-10-23 | 广东科达洁能股份有限公司 | Ink box negative pressure control device and ink-jet printer |
| CN110774767B (en) * | 2018-07-31 | 2023-08-22 | 北京梦之墨科技有限公司 | Liquid level control assembly and control method of liquid metal ink supply system |
| CN112997140A (en) * | 2018-11-20 | 2021-06-18 | 惠普发展公司，有限责任合伙企业 | Printing fluid delivery using multiple tanks |
| EP3883775B1 (en) * | 2018-11-20 | 2024-05-29 | Hewlett-Packard Development Company, L.P. | Overflow chamber for print fluid tanks |
| CN111645425B (en) * | 2020-06-10 | 2021-07-06 | Tcl华星光电技术有限公司 | Ink jet printing apparatus and bubble discharge method thereof |
| CN111605319A (en) * | 2020-06-30 | 2020-09-01 | 南阳柯丽尔科技有限公司 | Ink supply control method and device |
| CN112092505B (en) * | 2020-08-20 | 2021-04-30 | 江苏集萃微纳自动化系统与装备技术研究所有限公司 | Continuous ink supply control system for ink-jet printing |
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| CN104275937A (en) | 2015-01-14 |
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