CN111746124A - Circulating ink supply system - Google Patents
Circulating ink supply system Download PDFInfo
- Publication number
- CN111746124A CN111746124A CN202010524453.XA CN202010524453A CN111746124A CN 111746124 A CN111746124 A CN 111746124A CN 202010524453 A CN202010524453 A CN 202010524453A CN 111746124 A CN111746124 A CN 111746124A
- Authority
- CN
- China
- Prior art keywords
- ink
- return
- pressure
- ink supply
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007641 inkjet printing Methods 0.000 claims abstract description 73
- 238000007639 printing Methods 0.000 claims abstract description 38
- 238000009499 grossing Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 230000001133 acceleration Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000000976 ink Substances 0.000 abstract 9
- 238000000034 method Methods 0.000 description 25
- 230000006870 function Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 108010001267 Protein Subunits Proteins 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- -1 bubbles Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/1433—Structure of nozzle plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/18—Ink recirculation systems
Abstract
The embodiment of the application discloses circulation ink supply system, the system includes an ink supply pipeline and a return ink pipeline, accomplishes circulation ink supply through china ink bucket, inkjet print head group, proportional valve group, ink supply pressure generating device and return ink pressure generating device. The pressure on the nozzle plate on the printing head is stable by controlling the pressure at the two ends of the printing head and the ink supply proportion, the stable work of the printing head is guaranteed, the printing quality is guaranteed through the proportional valve device, the structure of a circulating ink supply system is optimized, the pressure at the two ends of the ink-jet printing head is easily controlled by the proportional valve, the printing quality is guaranteed, and the practicability is higher.
Description
Technical Field
The embodiment of the application relates to the technical field of ink supply of printing machines, in particular to a circulating ink supply system.
Background
In the process of rapid development of digital inkjet printing technology, the printing nozzle becomes a core limiting factor, and a circulating ink supply mode is usually adopted to supply ink to the nozzle, so that impurities, bubbles, waste heat and the like in the nozzle are brought out through ink circulation, and the influence on printing quality caused by nozzle blockage or supercooling and overheating is prevented. Meanwhile, the stability of the viscosity of the ink can be ensured by a circulating ink supply mode.
In the prior art, the circulating ink supply is generally carried out by adopting an air pressure method or a differential pressure method. The air pressure method is to adjust the pressure difference between two ends of the printing head by switching and controlling a high-pressure air source and a low-pressure air source to enter the ink supply box so as to realize the output of ink, but a large number of air paths exist in the system through air pressure adjustment, so that the complexity of the system is high, and if a system fault occurs, ink can enter the air paths to cause the damage of air path devices, which is not favorable for the reliable operation of the ink supply system; the differential pressure method is to generate differential pressure by means of an ink pump with adjustable rotation speed to control the circulating ink supply, and the method has no air path, so that the defect of the air pressure method is overcome, but the distance from a spray head to an ink supply pump and an ink return pump in a general system is long, and the system can have a plurality of spray heads, so that the complexity of the system is increased, the pressure, the flow and the like of ink passing through a printing head are difficult to control, and the printing quality is influenced.
Therefore, it is an urgent need in the art to provide an ink supply system that has a simple structure and can effectively control the pressure and flow of ink to make a nozzle plate on a print head obtain a stable pressure and ensure the stable operation of the print head.
Disclosure of Invention
Therefore, the embodiment of the application provides a circulating ink supply system, and the pressure on the nozzle plate on the printing head is stable by controlling the pressure at the two ends of the printing head and the ink supply ratio, so that the printing head can stably work, and the printing quality is guaranteed.
In order to achieve the above object, the embodiments of the present application provide the following technical solutions:
a circulating ink supply system, the system comprising:
the ink barrel is used for storing ink and is connected with the ink supply pipeline and the ink return pipeline;
one end of the ink jet printing head set is connected to the ink supply pipeline, the other end of the ink jet printing head set is connected to the ink return pipeline, the ink jet printing head set comprises N ink jet printing heads, a nozzle plate is loaded on each ink jet printing head and used for outputting and printing ink, and N is an integer greater than or equal to 1;
the ink-jet pressure sensor group comprises N nozzle ink-supply pressure sensors and N nozzle ink-return pressure sensors, wherein each nozzle ink-supply pressure sensor is connected with the ink-jet printing head in an ink-supply pipeline and used for detecting the pressure of ink entering the ink-jet printing head, and each nozzle ink-return pressure sensor is connected with the ink-jet printing head in an ink-return pipeline and used for detecting the pressure of the ink flowing out of the ink-jet printing head;
the proportional valve group comprises N ink supply proportional valves and N ink return proportional valves, wherein the ink supply proportional valves are connected with the nozzle ink supply pressure sensor in the ink supply pipeline and used for controlling the ink flow rate in the ink supply pipeline; the ink return proportional valve is connected with the ink return pressure sensor of the spray head in the ink return pipeline and is used for controlling the ink flow rate in the ink return pipeline.
Optionally, the system further comprises:
the ink return pressure generating device is arranged in the ink return pipeline, one end of the ink return pressure generating device is connected with the ink return proportional valve, the other end of the ink return pressure generating device is connected with the ink barrel, and the ink return pressure generating device is used for outputting the ink in the ink return pipeline to the ink barrel and maintaining the ink return pipeline in a set pressure range;
and the ink supply pressure generating device is arranged in the ink supply pipeline, one end of the ink supply pressure generating device is connected with the ink supply proportional valve, and the other end of the ink supply pressure generating device is connected with the ink barrel and is used for introducing the ink from the ink barrel into the ink supply pipeline and maintaining the ink supply pipeline in a set pressure range.
Optionally, the ink supply pressure generating device comprises an ink supply pump, an ink supply buffer and an ink supply pressure sensor; the inlet of the ink supply pump is connected with the ink barrel, the outlet of the ink supply pump is connected with the input end of the ink supply buffer, and the ink supply pump is used for introducing the ink in the ink barrel into the ink supply pipeline and maintaining the ink supply pipeline within a set pressure range; the output end of the ink supply buffer is connected with an ink supply pressure sensor, and the output end of the ink supply buffer is used for smoothing the pressure pulse of an ink supply pipeline; the ink supply pressure sensor is used for detecting the ink pressure in the ink supply pipeline;
the ink return pressure generating device comprises an ink return pump, an ink return buffer and an ink return pressure sensor; the outlet of the ink return pump is connected with the ink barrel, the inlet of the ink return pump is connected with the input end of the ink return buffer, and the ink return pump is used for outputting the ink in the ink return pipeline to the ink barrel and maintaining the ink pipeline in a set pressure range; the output end of the ink return buffer is connected with an ink return pressure sensor and used for smoothing the pressure pulse of the ink return pipeline; the ink return pressure sensor is used for detecting the ink pressure in the ink return pipeline.
Optionally, the system further comprises: a controller;
the controller is used for dynamically controlling the ink pressure and the flow rate at two ends of the ink-jet printing head, the controller is electrically connected with the ink supply pressure sensor of the nozzle, the controller is electrically connected with the proportional valve, the controller is electrically connected with the ink supply pressure sensor of the ink supply pressure device, the controller is electrically connected with the ink supply pump of the ink supply pressure device, the controller is electrically connected with the ink return pressure sensor of the ink return pressure generating device, and the controller is electrically connected with the ink return pump of the ink return pressure generating device.
Optionally, the system further comprises: an electromagnetic valve;
the electromagnetic valve is arranged on the ink supply pipeline, one end of the electromagnetic valve is communicated with the atmosphere directly or through a filter, and the other end of the electromagnetic valve is arranged on the ink supply pipeline between the ink supply proportional valve and the nozzle ink supply pressure sensor;
in the case of the ink in the ink jet printing head needing to be drained, the electromagnetic valve is closed; under the condition that ink needs to be emptied from the ink-jet printing head, the ink supply proportional valve is closed, and the electromagnetic valve is opened, so that residual ink in the ink-jet printing head flows back to the ink barrel through the ink return pipeline; and when the machine is stopped, the ink supply proportional valve and the electromagnetic valve are closed.
Optionally, the operation process of the circulating ink supply system includes the following steps:
setting initial data of a controller according to the type of the ink and the type of the ink-jet printing head, and starting and controlling each electrical element by the controller according to preset parameters;
the ink supply pressure generating device leads the ink into the ink supply pipeline from the ink barrel, so that the ink enters the ink jet printing head in the ink supply pipeline through the ink supply proportional valve and the nozzle ink supply pressure sensor, a nozzle plate on the ink jet printing head outputs the ink, and the nozzle ink supply pressure sensor transmits the pressure parameter to the controller;
redundant ink passes through a nozzle ink return pressure sensor and an ink return proportional valve, and the nozzle ink return pressure sensor transmits pressure parameters to a controller; the ink flows through the ink return pressure generating device and enters the ink barrel again, and one-time ink circulation is completed.
Optionally, the working process of the system further includes:
and judging whether the pressure and the flow rate of the ink are in a set range, if not, adjusting the opening of the ink supply proportional valve and the opening of the ink return proportional valve by using a controller so as to control the pressure and the flow rate of the ink on a nozzle plate of the ink jet printing head to be in the set range.
Optionally, the ink pressure on the nozzle plate of the inkjet printhead is calculated according to the following formula:
wherein p is the ink pressure on the nozzle plate, p1 is the pressure measured by the ink supply pressure sensor, p2 is the pressure measured by the ink return pressure sensor, ρ is the ink density, g is the gravity acceleration, h1 is the vertical height from the ink supply pressure device to the nozzle plate, and h2 is the vertical height from the ink return pressure sensor to the nozzle plate.
Optionally, the ink flow rate on the inkjet printhead is calculated according to the following formula:
wherein Q is the ink flow speed, K is a coefficient, and is related to the type of ink and the type of the nozzle, p1 is the pressure measured by the ink supply pressure sensor, and p2 is the pressure measured by the ink return pressure sensor.
In summary, the embodiment of the present application provides a circulating ink supply system, which is used for storing ink through an ink barrel, and is connected to an ink supply pipeline and an ink return pipeline; one end of the ink jet printing head set is connected to the ink supply pipeline, the other end of the ink jet printing head set is connected to the ink return pipeline, the ink jet printing head set comprises N ink jet printing heads, a nozzle plate is loaded on each ink jet printing head and used for outputting and printing ink, and N is an integer greater than or equal to 1; the ink-jet pressure sensor group comprises N nozzle ink-supply pressure sensors and N nozzle ink-return pressure sensors, wherein each nozzle ink-supply pressure sensor is connected with the ink-jet printing head in an ink-supply pipeline and used for detecting the pressure of ink entering the ink-jet printing head, and each nozzle ink-return pressure sensor is connected with the ink-jet printing head in an ink-return pipeline and used for detecting the pressure of the ink flowing out of the ink-jet printing head; the proportional valve group comprises N ink supply proportional valves and N ink return proportional valves, wherein the ink supply proportional valves are connected with the nozzle ink supply pressure sensor in the ink supply pipeline and used for controlling the ink flow rate in the ink supply pipeline; the ink return proportional valve is connected with the ink return pressure sensor of the spray head in the ink return pipeline and is used for controlling the ink flow rate in the ink return pipeline. The pressure on the nozzle plate on the printing head is stable by controlling the pressure at the two ends of the printing head and the ink supply proportion, the stable work of the printing head is guaranteed, the printing quality is guaranteed through the proportional valve device, the structure of a circulating ink supply system is optimized, the pressure at the two ends of the ink-jet printing head is easily controlled by the proportional valve, the printing quality is guaranteed, and the practicability is higher.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.
Fig. 1 is a schematic structural diagram of a circulating ink supply system according to an embodiment of the present disclosure;
fig. 2 is a schematic view of an embodiment of a circulating ink supply system according to an embodiment of the present application.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 illustrates a circulating ink supply system provided by an embodiment of the present application, which reduces the complexity of the system by optimizing the structure of the ink supply system. The pressure on the nozzle plate on the printing head is stable by controlling the pressure at the two ends of the printing head and the ink supply proportion, so that the stable work of the printing head can be ensured, and the printing quality is ensured.
On the basis of fig. 1, fig. 2 shows a schematic diagram of an embodiment of a circulating ink supply system provided by an embodiment of the present application, and reference numerals are described as follows: 1-ink barrel, 2-ink-jet printing head, 3-ink-jet pressure sensor, 31-nozzle ink-supply pressure sensor, 32-nozzle ink-return pressure sensor, 4-proportional valve, 41-ink-supply proportional valve, 42-ink-return proportional valve, 5-ink-supply pressure generating device, 51-ink-supply pump, 52-ink-supply buffer, 53-ink-supply pressure sensor, 6-ink-return pressure generating device, 61-ink-return pump, 62-ink-return buffer, 63-ink-return pressure sensor and 7-electromagnetic valve.
The output and circulation of the ink are completed through an ink supply pipeline and an ink return pipeline, and the method specifically comprises the following steps:
the ink barrel 1 is connected with an ink supply pipeline and an ink return pipeline and used for storing ink.
At least one ink jet printing head 2, one end of which is connected with an ink supply pipeline and the other end is connected with an ink return pipeline, wherein a nozzle plate is loaded on the ink jet printing head for outputting and printing ink, when the ink enters the ink jet printing head 2 from an ink barrel 1 through the ink supply pipeline, part of the ink is ejected out through the nozzle plate under the action of pressure, and the rest of the ink enters the ink return pipeline and finally flows back to the ink barrel 1.
At least one set of ink-jet pressure sensors 3 for detecting the pressure at the two ends of the ink-jet print head, including a nozzle ink-supply pressure sensor 31 and a nozzle ink-return pressure sensor 32, wherein the nozzle ink-supply pressure sensor 31 is connected with the ink-jet print head 2 in the ink-supply pipeline, has a vertical distance h1 with the nozzle plate on the ink-jet print head 2, and is used for detecting the pressure of the ink entering the ink-jet print head 2; the head return pressure sensor 32 is connected to the ink jet print head 2 in the return line at a vertical distance h2 from a nozzle plate on the ink jet print head 2 for detecting the pressure of the ink flowing out of the ink jet print head 2.
At least one set of proportional valves 4 for controlling the flow rate of ink across the inkjet print head 2 to regulate the pressure across the inkjet print head 2, comprising: an ink supply proportional valve 41 and an ink return proportional valve 42, wherein the ink supply proportional valve 41 is connected to the head ink supply pressure sensor 31 in the ink supply line for controlling the ink flow rate in the ink supply line; an ink return proportional valve 42 is connected to the head ink return pressure sensor 32 in the ink return line for controlling the ink flow rate in the ink return line.
In operation, when ink in the ink supply line flows through the ink supply proportional valve 41, passes through the head ink supply pressure sensor 31, enters the inkjet printhead 2, partial ink is ejected under the action of the inkjet pressure, and excess ink enters the ink return line, passes through the head ink return pressure sensor 32, and then flows through the ink return proportional valve 42. The ink jet pressure is related to the pressures detected by the head ink supply pressure sensor 31 and the head ink return pressure sensor 32, when the pressure is stable, the continuous and stable output of printing can be ensured, and the better printing quality can be ensured, and under the condition that the type of the ink jet printing head 2 and the type of the ink are determined, the ink pressure on the nozzle plate of the ink jet printing head 2 is calculated according to the formula (1):
wherein p is the ink pressure on the nozzle plate, p1 is the pressure measured by a 4-ink supply pressure sensor, p2 is the pressure measured by a 5-ink return pressure sensor, ρ is the ink density, g is the gravity acceleration, h1 is the vertical height from the ink supply pressure device to the nozzle plate, and h2 is the vertical height from the ink return pressure sensor to the nozzle plate.
The ink flow rate on the ink jet printhead is calculated according to equation (2):
wherein Q is the ink flow rate, K is a coefficient, and is related to the type of ink and the type of the nozzle, p1 is the pressure measured by a 4-supply pressure sensor, and p2 is the pressure measured by a 5-return pressure sensor.
As can be seen from the above formula, the appropriate ink ejection pressure p can be obtained by controlling the appropriate ink supply pressure p1 and ink return pressure p2, and the opening degrees of the ink supply proportional valve 41 and ink return proportional valve 42 can be adjusted indirectly to adjust p1 and p2, so as to achieve the purpose of adjusting p. Compared with the prior art, the structure of the ink supply circulating system is greatly simplified, the pressure difference between the two ends of the ink jet printing head 2 is convenient to adjust, and therefore the ink jet printing head 2 obtains stable ink jet pressure, and the printing quality is guaranteed.
An ink supply pressure generating means 5 in the ink supply line, having one end connected to the ink supply proportional valve 41 and the other end connected to the ink tank 1, for introducing the ink from the ink tank 1 into the ink supply line and maintaining the ink supply line at an appropriate pressure; further comprising: an ink supply pump 51, an ink supply buffer 52, an ink supply pressure sensor 53; the inlet of the ink supply pump 51 is connected with the ink barrel 1, and the outlet is connected with the input end of the ink supply buffer 52, and is used for introducing the ink in the ink barrel 1 into the ink supply pipeline and keeping the ink supply pipeline at proper pressure; the output end of the ink supply buffer 52 is connected with an ink supply pressure sensor 53 and is used for smoothing the pressure pulse of an ink supply pipeline; the ink supply pressure sensor 53 is used to detect the pressure in the ink supply line.
An ink return pressure generating device 6, in the ink return pipeline, one end of which is connected with the ink return proportional valve 42 and the other end is connected with the ink barrel 1, for outputting the ink in the ink return pipeline to the ink barrel 1 and keeping the ink return pipeline at proper pressure; further comprises an ink return pump 61, an ink return buffer 62 and an ink return pressure sensor 63; the outlet of the ink return pump 61 is connected with the ink barrel 1, and the inlet is connected with the input end of the ink return buffer 62, and is used for outputting the ink in the ink return pipeline to the ink barrel 1 and keeping the ink return pipeline at proper pressure; the output end of the ink return buffer 62 is connected with an ink return pressure sensor 63 and is used for smoothing the pressure pulse of the ink return pipeline; the ink return pressure sensor 63 is used to detect the ink pressure in the ink return line.
In a possible embodiment, the ink supply circulation system further includes a controller (not shown) for dynamically controlling the pressure and flow rate of ink at two ends of the inkjet printhead 2, the controller is electrically connected to the head ink supply pressure sensor 31 and the head ink return pressure sensor 32 of the inkjet pressure sensor, the controller is electrically connected to the ink supply proportional valve 41 and the ink return proportional valve 42 of the proportional valve, the controller is electrically connected to the ink supply pressure sensor 53 of the ink supply pressure device 7, the controller is electrically connected to the ink supply pump 51 of the ink supply pressure device 7, the controller is electrically connected to the ink return pressure sensor 63 of the ink return pressure generating device 6, and the controller is electrically connected to the ink return pump 61 of the ink return pressure generating device 6.
Before operation, initial data of the controller is set according to the ink type and the type of the inkjet printhead 2.
When the ink-jet printer works, the controller starts and controls each electrical element according to preset parameters, firstly, the ink supply pressure generating device 5 introduces ink into an ink supply pipeline from the ink barrel 1, the ink enters the ink-jet printing head 2 in the ink supply pipeline through the ink supply proportional valve 41 and the nozzle ink supply pressure sensor 31, a nozzle plate on the ink-jet printing head 2 outputs the ink, meanwhile, the nozzle ink supply pressure sensor 31 transmits pressure parameters to the controller, redundant ink passes through the nozzle ink return pressure sensor 32 and the ink return proportional valve 42 under the action of the ink return pressure generating device 6, meanwhile, the nozzle ink return pressure sensor 32 transmits the pressure parameters to the controller, then the ink flows through the ink return pressure generating device 6 and enters the ink barrel again, and one-time ink circulation is completed. At the time of shutdown, the ink supply proportional valve 41 is closed, and the ink return proportional valve 42 is closed.
In the working process, whether the pressure and the flow rate of the ink are in the set range or not needs to be judged, if not, the controller is used for adjusting the opening degree of the ink supply proportional valve and the opening degree of the ink return proportional valve so as to control the pressure and the flow rate of the ink on the nozzle plate of the ink jet printing head to be in the set range.
In a possible embodiment, the ink supply circulation system may further include an electromagnetic valve 7 mounted on the ink supply line, one end of which is connected to the atmosphere directly or through a filter, and the other end of which is mounted on the ink supply line between the ink supply proportional valve 41 and the head ink supply pressure sensor 31, for exhausting the ink in the inkjet print head 2; when the device works, the electromagnetic valve 7 is closed; when discharging ink, the ink supply proportional valve 41 is closed, the electromagnetic valve 7 is opened, air enters the ink supply pipeline from the electromagnetic valve 7, and the ink in the ink jet printing head 2 is discharged under the action of the ink return pressure device 8; at the time of shutdown, the ink supply proportional valve 41 and the electromagnetic valve 7 are closed.
It should be noted that if the system needs to carry multiple sets of inkjet print heads 2, an equal number of proportional valves (i.e., an equal number of ink supply proportional valves 41 and an equal number of ink return proportional valves 42) and an equal number of inkjet pressure sensors (i.e., an equal number of head ink supply pressure sensors 31 and an equal number of head ink return pressure sensors 32) need to be simultaneously carried, and the proportional valves and the inkjet pressure sensors can be connected through one-way or multi-way three-way joints in the ink supply pipeline and the ink return pipeline.
It should be further noted that, in a specific application, other additional devices such as an ink filter, a degassing device, a heating device, etc. may be added to the system according to actual needs.
From the above, the opening degree of the ink supply proportional valve and the opening degree of the ink return proportional valve are adjusted, so that the P1 and the P2 can be indirectly adjusted, and the purpose of adjusting the ink pressure and the ink flow rate is achieved. And in the shutdown state, the ink supply proportional valve and the ink return proportional valve are both closed.
If the ink in the ink-jet printing head needs to be emptied, the electromagnetic valve needs to be carried, and the electromagnetic valve is closed in a working state; when the ink needs to be exhausted from the ink-jet printing head, the ink-supply proportional valve is closed, the electromagnetic valve is opened, and at the moment, under the action of the ink-return pressure generating device, air enters the ink-jet printing head from the electromagnetic valve, so that residual ink in the ink-jet printing head flows back to the ink barrel through the ink-return pipeline; when the machine is stopped, the electromagnetic valve is closed.
Compared with the prior art, the structure of the circulating ink supply system is greatly optimized through the proportional valve device, so that the structure is simpler, the adaptability is stronger, the pressure at two ends of the ink-jet printing head is easier to control through the proportional valve, the printing quality is ensured, and the practicability is stronger.
In summary, the embodiment of the present application provides a circulating ink supply system, which is used for storing ink through an ink barrel, and is connected to an ink supply pipeline and an ink return pipeline; one end of the ink jet printing head set is connected to the ink supply pipeline, the other end of the ink jet printing head set is connected to the ink return pipeline, the ink jet printing head set comprises N ink jet printing heads, a nozzle plate is loaded on each ink jet printing head and used for outputting and printing ink, and N is an integer greater than or equal to 1; the ink-jet pressure sensor group comprises N nozzle ink-supply pressure sensors and N nozzle ink-return pressure sensors, wherein each nozzle ink-supply pressure sensor is connected with the ink-jet printing head in an ink-supply pipeline and used for detecting the pressure of ink entering the ink-jet printing head, and each nozzle ink-return pressure sensor is connected with the ink-jet printing head in an ink-return pipeline and used for detecting the pressure of the ink flowing out of the ink-jet printing head; the proportional valve group comprises N ink supply proportional valves and N ink return proportional valves, wherein the ink supply proportional valves are connected with the nozzle ink supply pressure sensor in the ink supply pipeline and used for controlling the ink flow rate in the ink supply pipeline; the ink return proportional valve is connected with the ink return pressure sensor of the spray head in the ink return pipeline and is used for controlling the ink flow rate in the ink return pipeline. The pressure on the nozzle plate on the printing head is stable by controlling the pressure at the two ends of the printing head and the ink supply proportion, the stable work of the printing head is guaranteed, the printing quality is guaranteed through the proportional valve device, the structure of a circulating ink supply system is optimized, the pressure at the two ends of the ink-jet printing head is easily controlled by the proportional valve, the printing quality is guaranteed, and the practicability is higher.
In the present specification, each embodiment of the method is described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. Reference is made to the description of the method embodiments.
It is noted that while the operations of the methods of the present invention are depicted in the drawings in a particular order, this is not a requirement or suggestion that the operations must be performed in this particular order or that all of the illustrated operations must be performed to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions.
Although the present application provides method steps as in embodiments or flowcharts, additional or fewer steps may be included based on conventional or non-inventive approaches. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an apparatus or client product in practice executes, it may execute sequentially or in parallel (e.g., in a parallel processor or multithreaded processing environment, or even in a distributed data processing environment) according to the embodiments or methods shown in the figures. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the presence of additional identical or equivalent elements in a process, method, article, or apparatus that comprises the recited elements is not excluded.
The units, devices, modules, etc. set forth in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. For convenience of description, the above devices are described as being divided into various modules by functions, and are described separately. Of course, in implementing the present application, the functions of each module may be implemented in one or more software and/or hardware, or a module implementing the same function may be implemented by a combination of a plurality of sub-modules or sub-units, and the like. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Those skilled in the art will also appreciate that, in addition to implementing the controller as pure computer readable program code, the same functionality can be implemented by logically programming method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Such a controller may therefore be considered as a hardware component, and the means included therein for performing the various functions may also be considered as a structure within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, classes, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
From the above description of the embodiments, it is clear to those skilled in the art that the present application can be implemented by software plus necessary general hardware platform. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, or the like, and includes several instructions for enabling a computer device (which may be a personal computer, a mobile terminal, a server, or a network device) to execute the method according to the embodiments or some parts of the embodiments of the present application.
The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The application is operational with numerous general purpose or special purpose computing system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable electronic devices, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like.
The above-mentioned embodiments are further described in detail for the purpose of illustrating the invention, and it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A circulating ink supply system, the system comprising:
the ink barrel is used for storing ink and is connected with the ink supply pipeline and the ink return pipeline;
one end of the ink jet printing head set is connected to the ink supply pipeline, the other end of the ink jet printing head set is connected to the ink return pipeline, the ink jet printing head set comprises N ink jet printing heads, a nozzle plate is loaded on each ink jet printing head and used for outputting and printing ink, and N is an integer greater than or equal to 1;
the ink-jet pressure sensor group comprises N nozzle ink-supply pressure sensors and N nozzle ink-return pressure sensors, wherein each nozzle ink-supply pressure sensor is connected with the ink-jet printing head in an ink-supply pipeline and used for detecting the pressure of ink entering the ink-jet printing head, and each nozzle ink-return pressure sensor is connected with the ink-jet printing head in an ink-return pipeline and used for detecting the pressure of the ink flowing out of the ink-jet printing head;
the proportional valve group comprises N ink supply proportional valves and N ink return proportional valves, wherein the ink supply proportional valves are connected with the nozzle ink supply pressure sensor in the ink supply pipeline and used for controlling the ink flow rate in the ink supply pipeline; the ink return proportional valve is connected with the ink return pressure sensor of the spray head in the ink return pipeline and is used for controlling the ink flow rate in the ink return pipeline.
2. The system of claim 1, wherein the system further comprises:
the ink return pressure generating device is arranged in the ink return pipeline, one end of the ink return pressure generating device is connected with the ink return proportional valve, the other end of the ink return pressure generating device is connected with the ink barrel, and the ink return pressure generating device is used for outputting the ink in the ink return pipeline to the ink barrel and maintaining the ink return pipeline in a set pressure range;
and the ink supply pressure generating device is arranged in the ink supply pipeline, one end of the ink supply pressure generating device is connected with the ink supply proportional valve, and the other end of the ink supply pressure generating device is connected with the ink barrel and is used for introducing the ink from the ink barrel into the ink supply pipeline and maintaining the ink supply pipeline in a set pressure range.
3. The system according to claim 2, wherein the ink supply pressure generating means includes an ink supply pump, an ink supply buffer, and an ink supply pressure sensor; the inlet of the ink supply pump is connected with the ink barrel, the outlet of the ink supply pump is connected with the input end of the ink supply buffer, and the ink supply pump is used for introducing the ink in the ink barrel into the ink supply pipeline and maintaining the ink supply pipeline within a set pressure range; the output end of the ink supply buffer is connected with an ink supply pressure sensor, and the output end of the ink supply buffer is used for smoothing the pressure pulse of an ink supply pipeline; the ink supply pressure sensor is used for detecting the ink pressure in the ink supply pipeline;
the ink return pressure generating device comprises an ink return pump, an ink return buffer and an ink return pressure sensor; the outlet of the ink return pump is connected with the ink barrel, the inlet of the ink return pump is connected with the input end of the ink return buffer, and the ink return pump is used for outputting the ink in the ink return pipeline to the ink barrel and maintaining the ink pipeline in a set pressure range; the output end of the ink return buffer is connected with an ink return pressure sensor and used for smoothing the pressure pulse of the ink return pipeline; the ink return pressure sensor is used for detecting the ink pressure in the ink return pipeline.
4. The system of any one of claims 1 to 3, further comprising: a controller;
the controller is used for dynamically controlling the ink pressure and the flow rate at two ends of the ink-jet printing head, the controller is electrically connected with the ink supply pressure sensor of the nozzle, the controller is electrically connected with the proportional valve, the controller is electrically connected with the ink supply pressure sensor of the ink supply pressure device, the controller is electrically connected with the ink supply pump of the ink supply pressure device, the controller is electrically connected with the ink return pressure sensor of the ink return pressure generating device, and the controller is electrically connected with the ink return pump of the ink return pressure generating device.
5. The system of claim 4, wherein the system further comprises: an electromagnetic valve;
the electromagnetic valve is arranged on the ink supply pipeline, one end of the electromagnetic valve is communicated with the atmosphere directly or through a filter, and the other end of the electromagnetic valve is arranged on the ink supply pipeline between the ink supply proportional valve and the nozzle ink supply pressure sensor;
in the case of the ink in the ink jet printing head needing to be drained, the electromagnetic valve is closed; under the condition that ink needs to be emptied from the ink-jet printing head, the ink supply proportional valve is closed, and the electromagnetic valve is opened, so that residual ink in the ink-jet printing head flows back to the ink barrel through the ink return pipeline; and when the machine is stopped, the ink supply proportional valve and the electromagnetic valve are closed.
6. The system of claim 4, wherein the cyclical ink supply system is operated by the steps of:
setting initial data of a controller according to the type of the ink and the type of the ink-jet printing head, and starting and controlling each electrical element by the controller according to preset parameters;
the ink supply pressure generating device leads the ink into the ink supply pipeline from the ink barrel, so that the ink enters the ink jet printing head in the ink supply pipeline through the ink supply proportional valve and the nozzle ink supply pressure sensor, a nozzle plate on the ink jet printing head outputs the ink, and the nozzle ink supply pressure sensor transmits the pressure parameter to the controller;
redundant ink passes through a nozzle ink return pressure sensor and an ink return proportional valve, and the nozzle ink return pressure sensor transmits pressure parameters to a controller; the ink flows through the ink return pressure generating device and enters the ink barrel again, and one-time ink circulation is completed.
7. The system of claim 6, wherein the operation of the system further comprises:
and judging whether the pressure and the flow rate of the ink are in a set range, if not, adjusting the opening of the ink supply proportional valve and the opening of the ink return proportional valve by using a controller so as to control the pressure and the flow rate of the ink on a nozzle plate of the ink jet printing head to be in the set range.
8. The system of claim 7, wherein the ink pressure on the inkjet printhead nozzle plate is calculated according to the following equation:
wherein p is the ink pressure on the nozzle plate, p1 is the pressure measured by the ink supply pressure sensor, p2 is the pressure measured by the ink return pressure sensor, ρ is the ink density, g is the gravity acceleration, h1 is the vertical height from the ink supply pressure device to the nozzle plate, and h2 is the vertical height from the ink return pressure sensor to the nozzle plate.
9. The system of claim 7, wherein the ink flow rate on the inkjet printhead is calculated according to the following equation:
wherein Q is the ink flow speed, K is a coefficient, and is related to the type of ink and the type of the nozzle, p1 is the pressure measured by the ink supply pressure sensor, and p2 is the pressure measured by the ink return pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010524453.XA CN111746124A (en) | 2020-06-10 | 2020-06-10 | Circulating ink supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010524453.XA CN111746124A (en) | 2020-06-10 | 2020-06-10 | Circulating ink supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111746124A true CN111746124A (en) | 2020-10-09 |
Family
ID=72674763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010524453.XA Pending CN111746124A (en) | 2020-06-10 | 2020-06-10 | Circulating ink supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111746124A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113277195A (en) * | 2021-06-09 | 2021-08-20 | 金华市爱的日化有限公司 | Full-automatic labeling and code spraying device and using method thereof |
| CN113320787A (en) * | 2021-06-09 | 2021-08-31 | 傅翔 | Full-automatic labeling and code spraying device and using method thereof |
| CN114103470A (en) * | 2021-11-10 | 2022-03-01 | Tcl华星光电技术有限公司 | Liquid circulation system and circulation method |
| CN114905742A (en) * | 2022-05-30 | 2022-08-16 | 共享智能装备有限公司 | Print head system and 3D printing equipment |
| CN116749649A (en) * | 2023-06-07 | 2023-09-15 | 武汉国创科光电装备有限公司 | Device for electro-hydrodynamic atomization film forming process and control method |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4314264A (en) * | 1980-08-15 | 1982-02-02 | The Mead Corporation | Ink supply system for an ink jet printer |
| JP2598134B2 (en) * | 1988-08-09 | 1997-04-09 | ビデオジェット・システムズ・インターナショナル・インコーポレーテッド | Ink jet system and ink valve control method |
| CN105082770A (en) * | 2014-05-09 | 2015-11-25 | 北大方正集团有限公司 | Cyclic ink supply device and ink-jet printer |
| GB2540111A (en) * | 2014-11-25 | 2017-01-11 | Matricode Ltd | Fluids delivery system |
| CN206201686U (en) * | 2016-10-10 | 2017-05-31 | 广东阿诺捷喷墨科技有限公司 | One kind three cavity negative pressure ink supply systems of circulation |
| CN106799894A (en) * | 2015-11-26 | 2017-06-06 | 北大方正集团有限公司 | Ink feeding system |
| CN206703733U (en) * | 2017-03-30 | 2017-12-05 | 西安德高印染自动化工程有限公司 | Totally-enclosed double negative-pressure cyclic ink feeding systems of Digital ink-jet printer |
| CN207156707U (en) * | 2017-05-09 | 2018-03-30 | 广东科达洁能股份有限公司 | A kind of ink-jet printer ink control device based on proportioning valve |
| CN207274166U (en) * | 2017-10-09 | 2018-04-27 | 广东科达洁能股份有限公司 | Ceramic ink jet printer circulates ink system |
| CN207790035U (en) * | 2018-01-02 | 2018-08-31 | 佛山市美嘉陶瓷设备有限公司 | Weaving ink jet printer multistage ink cartridge type ink feeding system |
| CN109664618A (en) * | 2017-10-16 | 2019-04-23 | 北大方正集团有限公司 | Ink-providing control system, printing machine, ink supply control method |
| CN209955541U (en) * | 2019-05-08 | 2020-01-17 | 深圳市微特智能系统有限公司 | Circulating ink supply system of ink-jet printer |
-
2020
- 2020-06-10 CN CN202010524453.XA patent/CN111746124A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4314264A (en) * | 1980-08-15 | 1982-02-02 | The Mead Corporation | Ink supply system for an ink jet printer |
| JP2598134B2 (en) * | 1988-08-09 | 1997-04-09 | ビデオジェット・システムズ・インターナショナル・インコーポレーテッド | Ink jet system and ink valve control method |
| CN105082770A (en) * | 2014-05-09 | 2015-11-25 | 北大方正集团有限公司 | Cyclic ink supply device and ink-jet printer |
| GB2540111A (en) * | 2014-11-25 | 2017-01-11 | Matricode Ltd | Fluids delivery system |
| CN106799894A (en) * | 2015-11-26 | 2017-06-06 | 北大方正集团有限公司 | Ink feeding system |
| CN206201686U (en) * | 2016-10-10 | 2017-05-31 | 广东阿诺捷喷墨科技有限公司 | One kind three cavity negative pressure ink supply systems of circulation |
| CN206703733U (en) * | 2017-03-30 | 2017-12-05 | 西安德高印染自动化工程有限公司 | Totally-enclosed double negative-pressure cyclic ink feeding systems of Digital ink-jet printer |
| CN207156707U (en) * | 2017-05-09 | 2018-03-30 | 广东科达洁能股份有限公司 | A kind of ink-jet printer ink control device based on proportioning valve |
| CN207274166U (en) * | 2017-10-09 | 2018-04-27 | 广东科达洁能股份有限公司 | Ceramic ink jet printer circulates ink system |
| CN109664618A (en) * | 2017-10-16 | 2019-04-23 | 北大方正集团有限公司 | Ink-providing control system, printing machine, ink supply control method |
| CN207790035U (en) * | 2018-01-02 | 2018-08-31 | 佛山市美嘉陶瓷设备有限公司 | Weaving ink jet printer multistage ink cartridge type ink feeding system |
| CN209955541U (en) * | 2019-05-08 | 2020-01-17 | 深圳市微特智能系统有限公司 | Circulating ink supply system of ink-jet printer |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113277195A (en) * | 2021-06-09 | 2021-08-20 | 金华市爱的日化有限公司 | Full-automatic labeling and code spraying device and using method thereof |
| CN113320787A (en) * | 2021-06-09 | 2021-08-31 | 傅翔 | Full-automatic labeling and code spraying device and using method thereof |
| CN113320787B (en) * | 2021-06-09 | 2024-03-08 | 东莞先诺科技有限公司 | Full-automatic labeling and code spraying device and application method thereof |
| CN114103470A (en) * | 2021-11-10 | 2022-03-01 | Tcl华星光电技术有限公司 | Liquid circulation system and circulation method |
| CN114905742A (en) * | 2022-05-30 | 2022-08-16 | 共享智能装备有限公司 | Print head system and 3D printing equipment |
| CN114905742B (en) * | 2022-05-30 | 2023-11-03 | 共享智能装备有限公司 | Printing head system and 3D printing equipment |
| CN116749649A (en) * | 2023-06-07 | 2023-09-15 | 武汉国创科光电装备有限公司 | Device for electro-hydrodynamic atomization film forming process and control method |
| CN116749649B (en) * | 2023-06-07 | 2024-01-02 | 武汉国创科光电装备有限公司 | Device for electro-hydrodynamic atomization film forming process and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111746124A (en) | Circulating ink supply system | |
| US11654687B2 (en) | Electronic data storage device for use with a cartridge for storing and dispensing liquid for use with a printer | |
| CN1836109B (en) | Control device for compressor | |
| AU743424B2 (en) | Ink circuit, ink jet machine and conditioning machine or conveyor using such a circuit | |
| EP3730222B1 (en) | Droplet ejection device and droplet ejection method | |
| CN100544963C (en) | The apparatus and method of providing ink | |
| CN106799894B (en) | Ink feeding system | |
| CN107178516A (en) | The control method of compressor control system and compressor | |
| CN112339431A (en) | Ink-jet printing multi-nozzle ink path air pressure control system and application | |
| WO2020081679A1 (en) | High stability ink delivery systems, and associated print systems and methods | |
| CN103939362B (en) | System and method for providing override control for feed pump recycle valve | |
| CN106142846B (en) | A kind of ceramic ink jet printer ink road cyclic control system of Kernel-based methods controller | |
| EP3184309A1 (en) | Inkjet printer and method of checking liquid feeding state | |
| KR101523402B1 (en) | Charging apparatus | |
| KR20170131675A (en) | Printing fluid circulation | |
| CN109664618B (en) | Ink supply control system, printing machine, and ink supply control method | |
| CN105984239B (en) | The three blunt quantity control system of ceramic ink jet printer ink road circulation | |
| US10970011B2 (en) | Consumable chip, consumable and consumable communication method | |
| CN205386987U (en) | Spout a yard system | |
| JP2020001218A (en) | Ink jet recording apparatus and ink transfer method | |
| CN109130523A (en) | A kind of ink circulating method thereof and its system | |
| CN104612948A (en) | Diaphragm pump system having re-priming capabilities | |
| CN209955541U (en) | Circulating ink supply system of ink-jet printer | |
| CN102642405A (en) | Ink protection method for ink-jet printer | |
| TW202007543A (en) | Ink delivery system for a printing module and method for delivering ink |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201009 |