CN111605319A - Ink supply control method and device - Google Patents
Ink supply control method and device Download PDFInfo
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- CN111605319A CN111605319A CN202010616355.9A CN202010616355A CN111605319A CN 111605319 A CN111605319 A CN 111605319A CN 202010616355 A CN202010616355 A CN 202010616355A CN 111605319 A CN111605319 A CN 111605319A
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- ink
- liquid level
- pump
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17566—Ink level or ink residue control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17596—Ink pumps, ink valves
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- Ink Jet (AREA)
Abstract
The ink supply control method and the ink supply control device have the advantages that the ink supply is controlled in real time by detecting the real-time liquid level of the transit ink bin, the ink pump is started to pump ink when the ink amount is lower than the low threshold value, and the ink pump is stopped when the ink amount is higher than the high threshold value, so that the ink supply continuity of the transit ink bin to an ink box is ensured, and meanwhile, the risk of excessive overflow of ink is avoided; the cascade structure of the large-capacity main ink barrel and the transfer ink bin can effectively solve the problem that the ink box is small in capacity and needs to be shut down and replaced for many times, so that the printing efficiency is greatly improved, and manpower and material resources are saved.
Description
Technical Field
The invention belongs to the technical field of ink-jet printing, and particularly relates to an ink supply control method and device.
Background
Ink-jet printing is a mature printing technology, ink is changed into fine particles through a nozzle of printing equipment to be sprayed and printed on a printing medium, most of the ink-jet printing equipment on the market at present is limited by a space of a printer, the capacity of a built-in ink box is small, when the ink quantity is insufficient, a new ink box is replaced in a common way, but when the ink-jet printing equipment is applied to a scene with large ink quantity, such as a hospital, a medical image report is printed, most of the medical image reports are often printed by ink-jet printing and have large ink quantity, if the ink is supplied by adopting a mode of stopping for replacing the ink box for multiple times, the working efficiency of the hospital is greatly reduced, and an existing ink supply system still adopts a simple ink path system and does not have an ink supply control system suitable for the scene with large ink.
Disclosure of Invention
Based on this, the present invention aims to provide an ink supply control method and apparatus to overcome the defects of the prior art.
The invention discloses an ink supply control method, which comprises the following steps:
and detecting the real-time liquid level of the transfer ink bin to control the ink pump to work, controlling the ink pump to pump ink from the main ink barrel to the transfer ink bin to supply ink when the real-time liquid level is lower than the first liquid level, and controlling the ink pump to stop pumping ink when the real-time liquid level is higher than the second liquid level.
Preferably, the method further comprises:
the real-time liquid level is higher than the first liquid level and lower than the second liquid level, and the ink pump is not triggered to act.
Preferably, the method further comprises:
and forcibly stopping the ink pump when the ink pumping time of the ink pump exceeds a preset value.
Preferably, the detecting the real-time liquid level of the transfer ink chamber to control the operation of the ink pump comprises:
detecting the real-time liquid level of the transfer ink bin by adopting a two-gear liquid level sensor, and outputting a corresponding level signal according to data acquired by the sensor through a comparator;
and controlling the ink pump to work according to the level signal.
Preferably, the detecting the real-time liquid level of the transfer ink tank to control the operation of the ink pump comprises:
detecting a real-time liquid level through a liquid level probe arranged above the transfer ink bin, wherein one end of the liquid level probe is used for contacting ink in the transfer ink bin, and the other end of the liquid level probe is connected to an input interface of a comparator, and the comparator outputs a corresponding level signal according to the voltage of the input interface;
and controlling the ink pump to work according to the level signal.
Preferably, the controlling of the ink pump according to the level signal includes:
when detecting that transfer ink storehouse lacks the china ink, output low level signal makes the opto-coupler among the ink pump work circuit switch on, and then makes the field effect transistor who is connected with the china ink pump switch on, and the china ink pump starts to carry out and draws china ink to transfer ink storehouse from main china ink bucket.
In another aspect, the present invention provides an ink supply control apparatus comprising:
the liquid level detection module is used for detecting the real-time liquid level of the transfer ink bin;
the control unit controls the ink pump to work according to the real-time liquid level;
and the ink pump is used for pumping ink from the main ink barrel to supply ink to the intermediate ink bin.
Preferably, the control unit further comprises a comparator for converting the real-time liquid level into a level value for the control unit to control the operation of the ink pump.
Preferably, the device further comprises an ink pump control module, which comprises an optical coupler and a field effect transistor, wherein the ink pump is electrically connected with the field effect transistor and is controlled to work by the on-off of the optical coupler and the field effect transistor, and the on-off of the optical coupler and the field effect transistor is controlled by a level signal output by the control unit.
Preferably, the comparator is an LM339 chip.
Preferably, the control unit adopts an STC15W4232S4 chip.
According to the technical scheme, the invention has the following beneficial effects:
the invention relates to an ink supply control method and device, which are characterized in that the ink supply is controlled in real time by detecting the real-time liquid level of a transit ink bin, an ink pump is started to pump ink when the ink amount is lower than a low threshold value, and the ink pump is stopped when the ink amount is higher than a high threshold value, so that the ink supply continuity of the transit ink bin to an ink box is ensured, and meanwhile, the risk of excessive overflow of ink is avoided; the cascade structure of the large-capacity main ink barrel and the transfer ink bin can effectively solve the problem that the ink box is small in capacity and needs to be shut down and replaced for many times, so that the printing efficiency is greatly improved, and manpower and material resources are saved.
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 is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of an embodiment of an ink supply control method
FIG. 2 is a block diagram of an ink supply control device according to an embodiment of the present invention
FIG. 3 is a schematic diagram of an ink supply control method according to another embodiment of the present invention
FIG. 4 is a schematic diagram of the principle of liquid level detection in the ink supply control method according to another embodiment of the present invention
FIG. 5 is a schematic diagram of a five-color liquid level detection method according to another embodiment of the present invention
FIG. 6 is a schematic diagram of the operation of an ink pump according to another embodiment of the present invention
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1 and 2, the present embodiment provides an ink supply control method and apparatus, including a liquid level sensor for detecting a real-time liquid level of a transfer ink tank; the control unit MCU controls the ink pump to work according to the real-time liquid level; and the ink pump is used for pumping ink from the main ink barrel to supply ink to the intermediate ink bin.
The control unit MCU detects the real-time liquid level of the transfer ink bin through the liquid level sensor so as to control the ink pump to work, controls the ink pump to pump ink from the main ink barrel to the transfer ink bin to supply ink when the real-time liquid level is lower than the first liquid level, and controls the ink pump to stop pumping ink when the real-time liquid level is higher than the second liquid level.
The embodiment also provides a timeout mechanism, and when the ink pumping time exceeds a preset value, the ink pump is forcibly stopped to ensure the safety of the device.
In a further embodiment, in order to realize accurate control of the ink amount in the centering ink bin, the liquid level detection is set to be that any action of the ink pump is not triggered when the real-time liquid level is higher than the first liquid level and lower than the second liquid level, namely, the ink pump is triggered to start or stop only when the real-time liquid level is lower than the first liquid level or higher than the second liquid level, and no trigger signal is generated under other conditions.
It will be readily appreciated that an insufficient amount of ink is required when the ink in the reservoir is below a low threshold, that an adequate amount of ink is required to stop the supply of ink when the ink is above a high threshold, and that no ink pump action is required when the ink is between the two levels.
Referring to fig. 3 to 6, in the present embodiment, another ink supply control method is provided, in which a two-level three-pole probe is used as a liquid level sensor to detect the remaining ink amount in the transfer ink chamber, the control unit MCU selects an STC15W4232S4 chip, the comparator selects an LM339 chip, one end of two poles of the probe is connected to the comparator, the other end of the probe is connected to the transfer ink chamber for high-low liquid level detection, and the other pole is grounded as a common pole.
Taking the inkjet printing apparatus of five colors as an example in the present embodiment, the five colors are cyan C, magenta M, yellow Y, black BK and pink PK, respectively, as shown in fig. 3, the I/O interfaces of the MCU for level detection are C1_ O, C2_ O, M1_ O, M2_ O, Y1_ O, Y2_ O, BK1_ O, BK2_ O, PK1_ O, PK2_ O and FM _ O, where C1_ O, M1_ O, Y1_ O, BK1_ O, PK1_ O is the low level detection interface of the transfer tank in each color ink; c2_ O, M2_ O, Y2_ O, BK2_ O, PK2_ O is a high liquid level detection interface of the ink transferring bin in each color ink; FM _ O is a waste ink tank detection interface, and the ink pump control interfaces corresponding to the five colors are PUM01, PUM02, PUM03, PUM04, and PUM05, and the ink paths of the colors are independent and the ink supply mechanism is the same, so the cyan C ink path is taken as an example for explanation, and the ink supply control for the other colors can be similarly described without further description.
Fig. 4 shows a schematic diagram of the LM339 comparator control adopted in this embodiment, a C1_ I probe is connected to the 5 th pin + INPUT1 of the LM339 comparator, and a C2_ I probe is connected to the 7 th pin + INPUT2 of the LM339 comparator. When the C1_ I probe is contacted with ink, due to the conductivity of the ink, the probe will be pulled down through the common electrode, the C1_ I is 0V, namely + INPUT1 is 0V, and-INPUT 1 is LM339_ VREF voltage, and the divided voltage is 2.5V, so the output of OUPUT1 is low level, namely the output of C1_ O is low level; similarly, when the C2_ I contacts ink, it indicates that the ink level has reached the high threshold, and output 2 outputs low level, and it can be known that ink is not needed to be supplied when the program detects that the low level interface is at low level, and indicates that ink is short when the program detects that the high level interface is at high level, and it is necessary to open the pump for supplying ink for corresponding color ink, and it indicates that ink is not overflowed when the program detects that the high level interface is at high level, and indicates that ink is full when the program detects that the high level interface is at low level, and ink supply can.
The principle of the five-color probe liquid level detection is shown in fig. 5, and according to the description of the liquid level detection, there are 5 probe sensors J2, J6, J35, J36 and J37, two probes corresponding to each color are connected to the transfer ink tank for liquid level detection, and the other pole is grounded together with the common pole of the rest colors.
As shown in fig. 6, after receiving the level signal of the comparator, the MCU generates a level signal of the ink pump control interface according to the ink pumping requirement, taking PUM01 as an example, when ink needs to be supplied, PUM _01 outputs a low level of 0V, and at this time, the optocoupler TLP181 in the ink pump control circuit is turned on, so that the MOS transistor IRF540S is turned on, and the ink pump connected to the JI interface starts to supply power; when the ink pump is full, the PMU01 is controlled to be at a high level of 5V by the program, so that the optocoupler TLP181 is cut off, and the MOS tube cut-off ink pump is controlled to stop working.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An ink supply control method, characterized by comprising:
and detecting the real-time liquid level of the transfer ink bin to control the ink pump to work, controlling the ink pump to pump ink from the main ink barrel to the transfer ink bin to supply ink when the real-time liquid level is lower than the first liquid level, and controlling the ink pump to stop pumping ink when the real-time liquid level is higher than the second liquid level.
2. An ink supply control method according to claim 1, further comprising:
the real-time liquid level is higher than the first liquid level and lower than the second liquid level, and no action of the ink pump is triggered.
3. An ink supply control method according to claim 1, characterized in that said method further comprises:
and forcibly stopping the ink pump when the ink pumping time of the ink pump exceeds a preset value.
4. The ink supply control method according to claim 1, wherein the detecting a real-time liquid level of the transfer ink tank to control the operation of the ink pump comprises:
detecting the real-time liquid level of the transfer ink bin by adopting a two-gear liquid level sensor, and outputting a corresponding level signal according to data acquired by the sensor through a comparator;
and controlling the ink pump to work according to the level signal.
5. The ink supply control method according to claim 4, wherein the detecting of the real-time liquid level of the transfer ink tank to control the operation of the ink pump comprises:
detecting real-time liquid level through a liquid level probe arranged above the transfer ink bin, wherein one end of the liquid level probe is used for contacting ink in the transfer ink bin, and the other end of the liquid level probe is connected to an input interface of the comparator, and the comparator outputs a corresponding level signal according to the voltage of the input interface;
and controlling the ink pump to work according to the level signal.
6. The ink supply control method according to claim 4, wherein said controlling the operation of the ink pump based on the level signal includes:
when the transfer ink bin is detected to lack ink, a low level signal is output to enable an optical coupler in an ink pump working circuit to be switched on, and further enable a field effect tube connected with the ink pump to be switched on, and the ink pump starts to pump ink from a main ink barrel to the transfer ink bin.
7. An ink supply control apparatus, comprising:
the liquid level detection module is used for detecting the real-time liquid level of the transfer ink bin;
the control unit controls the ink pump to work according to the real-time liquid level;
and the ink pump is used for pumping ink from the main ink barrel to supply ink to the intermediate ink bin.
8. An ink supply control device as claimed in claim 7, wherein said control unit further comprises a comparator for converting the real time liquid level to a level value for the control unit to control the operation of the ink pump.
9. An ink supply control device as claimed in claim 8, wherein said comparator is an LM339 chip.
10. The ink supply control device according to claim 7, wherein the control unit uses an STC15W4232S4 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010616355.9A CN111605319A (en) | 2020-06-30 | 2020-06-30 | Ink supply control method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010616355.9A CN111605319A (en) | 2020-06-30 | 2020-06-30 | Ink supply control method and device |
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| CN111605319A true CN111605319A (en) | 2020-09-01 |
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| CN202010616355.9A Pending CN111605319A (en) | 2020-06-30 | 2020-06-30 | Ink supply control method and device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201712258U (en) * | 2010-06-10 | 2011-01-19 | 山东滨州亚光毛巾有限公司 | Ink supply device for digital printer |
| CN103963475A (en) * | 2014-05-21 | 2014-08-06 | 深圳市巨鼎医疗设备有限公司 | Multi-stage ink supply system |
| CN104275937A (en) * | 2013-07-05 | 2015-01-14 | 北大方正集团有限公司 | Overflowing protection device for working ink box and circulating ink supply system |
| CN106553455A (en) * | 2015-09-28 | 2017-04-05 | 陶琳 | Intelligent ink feeding system, ink supply control method and inkjet-printing device |
-
2020
- 2020-06-30 CN CN202010616355.9A patent/CN111605319A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201712258U (en) * | 2010-06-10 | 2011-01-19 | 山东滨州亚光毛巾有限公司 | Ink supply device for digital printer |
| CN104275937A (en) * | 2013-07-05 | 2015-01-14 | 北大方正集团有限公司 | Overflowing protection device for working ink box and circulating ink supply system |
| CN103963475A (en) * | 2014-05-21 | 2014-08-06 | 深圳市巨鼎医疗设备有限公司 | Multi-stage ink supply system |
| CN106553455A (en) * | 2015-09-28 | 2017-04-05 | 陶琳 | Intelligent ink feeding system, ink supply control method and inkjet-printing device |
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