CN114261205B - Printing quality optimization method based on dynamic adjustment of printing voltage - Google Patents
Printing quality optimization method based on dynamic adjustment of printing voltage Download PDFInfo
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- CN114261205B CN114261205B CN202111570800.3A CN202111570800A CN114261205B CN 114261205 B CN114261205 B CN 114261205B CN 202111570800 A CN202111570800 A CN 202111570800A CN 114261205 B CN114261205 B CN 114261205B
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Abstract
The invention discloses a printing quality optimization method based on dynamic printing voltage adjustment, which comprises the following steps: confirming a variation curve of the resistance value of a heating resistor of a spray head along with the number of times of spray printing according to the type of a printer; step two, establishing a comparison table of the resistance value of the heating resistor of the spray head and the spray printing times according to the change curve in the step one, and loading the comparison table into a background; determining the optimal output power, and loading the optimal output power of the heating resistor of the spray head in the background according to the model of the printer; and step four, dynamically adjusting the voltage loaded at two ends of each spray head heating resistor, and carrying out real-time dynamic voltage adjustment according to the resistance value of the spray head heating resistor changing along with the increase of the use times, so that the spray head heating resistor is always in stable heating power, the printing quality is ensured, and the service life of the printer nozzle can be effectively prolonged.
Description
Technical Field
The invention relates to the technical field of printing, in particular to a printing quality optimization method based on dynamic adjustment of printing voltage.
Background
There are two main types of inkjet printers, the Drop On Demand (DOD) and the Continuous Inkjet (CIJ) printer. The invention is based on a demand ink-jet type code spraying machine and adopts a thermal foaming principle.
The nozzle of the thermal foaming on-demand ink jet printer is composed of a row of regularly arranged precise micro nozzles, for example, an HP45 thermal foaming ink box is provided with 300 nozzles, a thin film heating resistor is arranged in each nozzle, the pL-level ink is instantaneously heated to more than 300 ℃ in an ink ejecting area to form a plurality of micro bubbles, and then the micro bubbles are quickly gathered into large bubbles and expanded to force ink drops to be ejected from the nozzles. The bubble continues to grow for a few microseconds and then disappears back onto the resistor. The ink in the nozzle also retracts as the bubble disappears. Then, due to the suction force generated by the surface tension of the ink, new ink is drawn to be replenished to the ink ejecting area to prepare for the next cycle of jet printing.
The core element of thermal foaming ink jet is a thin film heating resistor, and the heating power after electrification directly influences the size and the jet speed of ink drops. Too small ink droplets and too slow ejection speed can cause unstable running tracks of the ink droplets, so that the problem of printing blurring can occur. Generally, the larger the ejection energy, the larger the ink droplet, the faster the ejection speed, and the better the print quality, within a certain range. However, higher ejection energy accelerates deterioration of the heat-generating resistor, shortening the nozzle life.
Disclosure of Invention
Aiming at the technical problems, the invention provides a printing quality optimization method based on printing voltage dynamic adjustment, which carries out real-time dynamic voltage adjustment according to the resistance value of the heating resistor of the spray head, which changes along with the increase of the use times, so that the heating resistor of the spray head can be always in stable heating power, the printing quality is ensured, and the service life of the nozzle of the printer can be effectively prolonged.
A printing quality optimization method based on dynamic adjustment of printing voltage is characterized in that: the specific method for dynamically adjusting the printing voltage comprises the following steps:
confirming a variation curve of the resistance value of a heating resistor of a spray head along with the number of times of spray printing according to the type of a printer;
step two, establishing the resistance value R of the heating resistor of the spray head according to the change curve in the step one t Comparison table (R) with jet printing times m m M), and loading the background;
step three, determining the optimal output power, and loading the optimal output power P of the heating resistor of the spray head into the background according to the model of the printer, wherein the optimal output power P is I 2 *R t ；
And step four, dynamically adjusting the voltage loaded at two ends of each spray head heating resistor, and according to kirchhoff law, changing U to n to I to R t Where n is the number of nozzles simultaneously opened, to give
Taking the comparison table in the second step when the mth resistor is subjected to the mth jet printing operation, and taking R t ＝R m Ensuring the dynamic state of the mth resistor outputting stable power P in the jet printing mth timeAdjust the voltage to
As the optimization of the technical scheme, a comparison table of the resistance values of the heating resistors of the spray heads of the printers in various models and the number of times of spray printing is loaded in the background system, so that preparation is made for the same background system to control the printers in various models simultaneously.
Preferably, the voltage applied to the two ends of the heating resistor of the nozzle is adjusted in a numerical control manner by a digital potentiometer.
The invention has the beneficial effects that:
the optimization method carries out real-time dynamic voltage regulation according to the resistance value of the heating resistor of the spray head, which changes along with the increase of the use times, so that the heating resistor of the spray head is always in stable heating power, the printing quality is ensured, and the service life of the nozzle of the printer can be effectively prolonged.
Drawings
FIG. 1 is a schematic diagram of an equivalent circuit model of a nozzle of an HP45 thermal foaming cartridge in operation.
FIG. 2 is a graph showing the variation of the heat resistance of the nozzle of the HP45 thermal foaming ink box with the number of times of printing.
Detailed Description
The technical scheme of the invention is clearly and completely described below by combining the attached drawings of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
A printing quality optimization method based on printing voltage dynamic adjustment is characterized in that: the specific method for dynamically adjusting the printing voltage comprises the following steps:
confirming a variation curve of the resistance value of a heating resistor of a spray head along with the number of times of spray printing according to the type of a printer;
step two, establishing the resistance value R of the heating resistor of the spray head according to the change curve in the step one t Comparison table (R) with jet printing times m m M), and loading the background;
step three, determining the optimal output power, and loading the optimal output power P of the heating resistor of the spray head into the background according to the model of the printer, wherein the optimal output power P is I 2 *R t ；
And step four, dynamically adjusting the voltage loaded at two ends of each spray head heating resistor, and according to kirchhoff law, changing U to n to I to R t Where n is the number of nozzles simultaneously opened, to give
Taking the comparison table in the second step when the mth resistor is subjected to the mth jet printing operation, and taking R t ＝R m Ensuring that the dynamic adjustment voltage of the tth resistor for outputting the stable power P for the mth time of jet printing is
In this embodiment, a comparison table of the resistance values of the heating resistors of the nozzles of the printers of various models and the number of times of jet printing is loaded into the background system, so as to prepare for the same background system to control the printers of various models simultaneously.
In this embodiment, the voltage applied to the two ends of the heating resistor of the nozzle is digitally controlled and adjusted by a digital potentiometer.
The optimization method carries out real-time dynamic voltage regulation according to the resistance value of the heating resistor of the spray head, which changes along with the increase of the use times, so that the heating resistor of the spray head is always in stable heating power, the printing quality is ensured, and the service life of the nozzle of the printer can be effectively prolonged.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A printing quality optimization method based on printing voltage dynamic adjustment is characterized in that: the specific method for dynamically adjusting the printing voltage comprises the following steps:
confirming a variation curve of the resistance value of a heating resistor of a spray head along with the number of times of spray printing according to the type of a printer;
step two, establishing the resistance value R of the heating resistor of the spray head according to the change curve in the step one t Comparison table (R) with jet printing times m m M), and loading the background;
step three, determining the optimal output power, and loading the optimal output power P of the heating resistor of the spray head into the background according to the model of the printer, wherein the optimal output power P is I 2 *R t ；
And step four, dynamically adjusting the voltage loaded at two ends of each spray head heating resistor, and according to kirchhoff law, changing U to n to I to R t Where n is the number of nozzles simultaneously opened, to give
Taking the comparison table in the second step when the mth resistor is subjected to the mth jet printing operation, and taking R t ＝R m Ensuring that the dynamic adjustment voltage of the tth resistor for outputting the stable power P for the mth time of jet printing is
2. The print quality optimizing method according to claim 1, characterized in that: and in the second step, a comparison table of the resistance values of the heating resistors of the spray heads of the printers of various models and the number of times of spray printing is loaded into the background system at the same time, so that preparation is made for the same background system to control the printers of various models simultaneously.
3. The print quality optimizing method according to claim 1, characterized in that: and the voltage loaded at the two ends of the heating resistor of the spray head is subjected to numerical control adjustment through a digital potentiometer.
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| CN202111570800.3A CN114261205B (en) | 2021-12-21 | 2021-12-21 | Printing quality optimization method based on dynamic adjustment of printing voltage |
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| CN202111570800.3A CN114261205B (en) | 2021-12-21 | 2021-12-21 | Printing quality optimization method based on dynamic adjustment of printing voltage |
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| CN114261205B true CN114261205B (en) | 2022-08-26 |
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| US5682185A (en) * | 1993-10-29 | 1997-10-28 | Hewlett-Packard Company | Energy measurement scheme for an ink jet printer |
| JPH09240030A (en) * | 1996-03-04 | 1997-09-16 | Shinko Seisakusho Co Ltd | Thermal head testing device |
| US6557975B2 (en) * | 2000-08-04 | 2003-05-06 | Canon Kabushiki Kaisha | Ink jet recording head, ink jet recording apparatus, and ink jet recording method |
| US6585352B1 (en) * | 2000-08-16 | 2003-07-01 | Hewlett-Packard Development Company, L.P. | Compact high-performance, high-density ink jet printhead |
| KR100435011B1 (en) * | 2001-04-27 | 2004-06-09 | 캐논 가부시끼가이샤 | Printing apparatus and printing control method |
| US6565176B2 (en) * | 2001-05-25 | 2003-05-20 | Lexmark International, Inc. | Long-life stable-jetting thermal ink jet printer |
| JP3862587B2 (en) * | 2002-03-29 | 2006-12-27 | キヤノン株式会社 | Inkjet recording head |
| JP2004025851A (en) * | 2002-05-02 | 2004-01-29 | Canon Inc | Inkjet recording apparatus and recording method |
| CN1628978A (en) * | 2003-12-19 | 2005-06-22 | 明基电通股份有限公司 | Printer capable of regulating ink-jet energy according to ink-jet head temperature and relative regulating method |
| US9283750B2 (en) * | 2005-05-20 | 2016-03-15 | Hewlett-Packard Development Company, L.P. | Constant current mode firing circuit for thermal inkjet-printing nozzle |
| JP4208888B2 (en) * | 2006-04-10 | 2009-01-14 | キヤノン株式会社 | Inkjet recording apparatus and inkjet recording method |
| EP2701916B1 (en) * | 2011-04-28 | 2018-07-25 | Hewlett-Packard Development Company, L.P. | Compensating for capacitance changes in piezoelectric printhead elements |
| TW202136064A (en) * | 2020-02-24 | 2021-10-01 | 瑞士商西克帕控股有限公司 | A thermal inkjet printhead, and a printing assembly and printing apparatus comprising the same |
| CN111300996B (en) * | 2020-02-26 | 2021-08-10 | 江门市得实计算机外部设备有限公司 | Method, device and computer storage medium for overcoming uneven heating of printing head |
| CN113478973B (en) * | 2021-06-01 | 2022-04-29 | 华中科技大学 | Arrayed electrofluid jet printing control method and device for inhibiting jet inclination |
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Address after: No. 02, 5 / F, block 7, Fenghuang Industrial Park, No. 52, Liufang Avenue, fozuling street, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430000 Patentee after: Wuhan Xiantong Technology Co.,Ltd. Address before: No. 02, 5 / F, block 7, Fenghuang Industrial Park, No. 52, Liufang Avenue, fozuling street, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430000 Patentee before: WUHAN XIANTONG TECHNOLOGY Co.,Ltd. |