CN114290825B - Position calibration method of printing head and ink-jet printer - Google Patents
Position calibration method of printing head and ink-jet printer Download PDFInfo
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- CN114290825B CN114290825B CN202111623632.XA CN202111623632A CN114290825B CN 114290825 B CN114290825 B CN 114290825B CN 202111623632 A CN202111623632 A CN 202111623632A CN 114290825 B CN114290825 B CN 114290825B
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Abstract
The invention relates to a position calibration method of a printing head, which controls the printing head to print a plurality of calibration patterns; when each calibration pattern is printed, controlling the printing head to print at least two groups of set patterns along the set printing direction according to the set adjacent offset, wherein the printed patterns form the calibration pattern; each calibration pattern is printed on the print medium and the most accurate calibration pattern number is selected for calibration of the printhead. According to the position calibration method, more accurate calibration patterns can be effectively selected and determined according to the calibration patterns printed at various printing speeds, so that the position calibration adjustment of the printing head is completed, the position adjustment precision of the printing head can be improved, the position of the printing head after the adjustment is more accurate, and the foundation is improved for high-quality printing. The invention also provides an ink-jet printer for realizing the position calibration method of the printing head.
Description
Technical Field
The invention relates to the technical field of printers, in particular to a position calibration method of a printing head and an inkjet printer applying the position calibration method of the printing head.
Background
The printer carriage may have the condition of skew to take place in transportation, use to lead to the printer head position of corresponding installation to take place the skew on the carriage, and then the condition of printing image skew appears.
The existing print head calibration method mainly comprises the steps of printing a preset calibration image by using a print head, and then calibrating the offset position of the print head according to the offset condition of the calibration image. The existing calibration image is mainly formed by ink drops ejected by the nozzle in the printing process, and the main ink drops ejected by the nozzle in an ideal state complete the printing of the calibration image, so that the calibration image has high precision, but the secondary ink drops are generated along with the process of forming the main ink drops in the printing process, and the secondary ink drops influence the formed calibration image. When the printing speed is low, the influence of the ink drops on the calibration image is small, but with the improvement of the printing speed, the influence of the ink drops on the calibration image is large, the formed calibration image is not easy to distinguish, so that the calibration guidance of the printing head is poor, and the printing image effect of the printer is influenced.
In addition, there is a difference in the carriage of each printer due to the production process, and in order to eliminate the individual difference, calibration adjustment is required at the time of initial use or replacement of the ink cartridge.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a method for calibrating the position of a printhead, which can reduce the influence of ink drops on a calibration pattern, improve the definition of the calibration pattern, facilitate observation, and further improve the accuracy of the position adjustment of the printhead.
A second technical problem to be solved by the present invention is to provide an inkjet printer applying the position calibration method of the print head in the above prior art.
The technical scheme adopted by the invention for solving the first technical problem is as follows: a method of calibrating the position of a printhead, comprising: controlling the print head to print a plurality of calibration patterns;
when each calibration pattern is printed, controlling the printing head to print at least two groups of set patterns along the set printing direction according to the set adjacent offset, wherein the printed patterns form the calibration pattern;
each calibration pattern is printed on the print medium and the most accurate calibration pattern number is selected for calibration of the printhead.
In order to ensure that human eyes can directly observe and distinguish, the number of printing groups of the set patterns is determined according to the resolution of the printing head, so that the line width of the calibration patterns formed by the set patterns can meet the requirement of direct observation of human eyes.
Preferably, the control unit is configured to control the print head to print a set of reference patterns in a set printing direction while printing each calibration pattern; then, respectively controlling the printing head to print the first auxiliary graph and the second auxiliary graph according to the set left offset and right offset in the same printing direction; the reference pattern, the first auxiliary pattern and the second auxiliary pattern thus together constitute a calibration pattern.
Preferably, the left offset and the right offset are each one ink droplet diameter, and the left offset and the right offset are calculated according to the printing resolution.
In order to simultaneously achieve alignment adjustment for bi-directional printing, the calibration patterns are printed from left to right and from right to left, respectively.
Alternatively, each calibration pattern is directly observed with the human eye; or the magnifying glass is used for assisting the human eyes to observe each calibration pattern; or scanning each calibration pattern by using the electronic equipment and magnifying and observing each calibration pattern;
and then select the most accurate calibration pattern number to determine for calibration of the printhead.
The invention solves the second technical problem by adopting the technical proposal that: an inkjet printer, characterized by: the printing method as described above can be realized.
Preferably, a control chip is included, the control chip including a processor and a memory storing a control program that is executed by the processor to implement the printing method as described above.
Compared with the prior art, the invention has the advantages that: according to the position calibration method, offset analysis and determination can be effectively carried out on calibration patterns printed at various printing speeds, and further more accurate calibration patterns are selected and determined, so that position calibration adjustment of a printing head is completed, the position adjustment precision of the printing head can be improved, the position of the printing head after adjustment is more accurate, and the foundation is improved for high-quality printing.
The invention also discloses an ink-jet printer applying the position calibration method of the printing head, and the ink-jet printer has good and stable printing quality.
Drawings
FIG. 1 is an enlarged view of a calibration pattern printed by a position calibration method of a printhead according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
The method for calibrating the position of the printing head in the embodiment is as follows: controlling the print head to print a plurality of calibration patterns; the pattern corresponding to the calibration pattern is preset in a system of the printer, and when the calibration work of the printing head is started, the pattern is read, so that the printing of the calibration pattern is realized. And the graph corresponding to the calibration pattern is a vertical line graph.
When each calibration pattern is printed, the print head is controlled to print at least two groups of set patterns along the set printing direction according to the set adjacent offset, and the printed patterns form the calibration pattern. For a printer capable of performing bidirectional printing, the calibration patterns need to be printed from left to right and from right to left, respectively. And in order to save time, when the printing work from left to right is completed once, the printing work from right to left is then performed once, and the printing work is alternately performed until the printing of the calibration pattern is completed. The calibration pattern printed in both directions can be calibrated in the right and left directions.
When in printing, the number of printing groups of the set patterns is determined according to the resolution of the printing head, so that the line width in the calibration pattern formed by the set patterns can meet the requirement of direct observation of human eyes. In this way, it is ensured that the printed calibration pattern can be directly observed and resolved by the human eye.
For a print head with a resolution of 600dpi, the diameter of the ink drops is 25.4/600=0.042 mm, and to facilitate the direct observation of the line condition of the image by human eyes, a line width greater than 0.1mm is required, so that three groups of image lines can be printed, the adjacent offset is set to be the diameter of one ink drop, the line in the printed calibration pattern is a line formed by three parallel ink dot lines, the corresponding line width is 3×0.042 mm=0.126 mm, and the line width is greater than the offset 0.1mm which cannot be well resolved by human eyes, so that the printed calibration pattern is more directly observed by human eyes.
As shown in fig. 1, in the present embodiment, when each calibration pattern is printed, the print head is controlled to print a set of reference patterns in a set printing direction; then, respectively controlling the printing head to print the first auxiliary graph and the second auxiliary graph according to the set left offset and right offset in the same printing direction; the reference pattern, the first auxiliary pattern and the second auxiliary pattern thus together constitute a calibration pattern. The corresponding left offset and right offset are all ink drop diameters, and the left offset and right offset are calculated according to the printing resolution, so that lines in the printed reference graph, the first auxiliary graph and the second auxiliary graph can be cut outwards along the left-right direction.
And based on the calibration patterns printed by the set offset, for the reference patterns, the first auxiliary patterns and the second auxiliary patterns printed from left to right, the main ink drops in the reference patterns can cover the auxiliary ink drops of the first auxiliary patterns, and the main ink drops of the second auxiliary patterns can cover the auxiliary ink drops in the reference patterns, so that the auxiliary ink points of the calibration patterns formed after the arrangement of the first auxiliary patterns and the second auxiliary patterns are only smaller than the auxiliary ink points of the reference patterns on the right side of the second auxiliary patterns, the influence of the auxiliary ink drops on the calibration patterns is greatly reduced, and the calibration patterns formed at high printing speed can be well resolved.
Each calibration pattern is printed according to the print head setup procedure, except that the printing is performed as described above when printing the lines in each calibration pattern. Each calibration pattern is printed on a print medium.
Directly observing each calibration pattern by using human eyes; or the magnifying glass is used for assisting the human eyes to observe each calibration pattern; or scanning each calibration pattern with an electronic device and magnifying and observing each calibration pattern.
The most accurate calibration pattern number is selected for calibration of the printhead. The printing relation among the calibration patterns adopts the relation in the prior art, and the calibration method of the printing head according to the selected calibration patterns also adopts the prior method.
According to the position calibration method of the printing head, the printing of the lines in the calibration pattern is realized by setting the offset, the resolvable property of the calibration pattern is enhanced, and the influence of ink drops on the selection accuracy of the ink drops is reduced. And then can select to confirm more accurate calibration pattern to accomplish the position calibration adjustment to the print head, can improve the precision of print head position adjustment, the position after the print head is adjusted is more accurate, gets into and has improved the basis for high quality printing.
An inkjet printer implementing the foregoing printing method is also disclosed in this embodiment. The printing device comprises a control chip, wherein the control chip comprises a processor and a memory storing a control program, and the control program is executed by the processor to realize the printing method.
Claims (5)
1. A method of calibrating the position of a printhead, comprising: controlling the print head to print a plurality of calibration patterns;
when each calibration pattern is printed, controlling the printing head to print at least two groups of set patterns along the set printing direction according to the set adjacent offset, wherein the printed patterns form the calibration pattern; determining the number of printing groups of the set patterns according to the resolution ratio of the printing head, so that the line width in the calibration pattern formed by the set patterns can meet the direct observation of human eyes;
controlling the printing head to print a group of reference patterns along a set printing direction when each calibration pattern is printed; then, respectively controlling the printing head to print the first auxiliary graph and the second auxiliary graph according to the set left offset and right offset in the same printing direction; the left offset and the right offset are the diameters of ink drops, and the left offset and the right offset are calculated according to the printing resolution; the reference pattern, the first auxiliary pattern and the second auxiliary pattern jointly form a calibration pattern;
each calibration pattern is printed on the print medium and the most accurate calibration pattern number is selected for calibration of the printhead.
2. The method of calibrating a position of a printhead of claim 1, wherein: the calibration patterns are printed from left to right and from right to left, respectively.
3. The method of calibrating a position of a printhead of claim 1, wherein: directly observing each calibration pattern by using human eyes; or the magnifying glass is used for assisting the human eyes to observe each calibration pattern; or scanning each calibration pattern by using the electronic equipment and magnifying and observing each calibration pattern;
and then select the most accurate calibration pattern number to determine for calibration of the printhead.
4. An inkjet printer, characterized by: a method of calibrating the position of a printhead according to any of claims 1 to 3.
5. An inkjet printer according to claim 4 wherein: comprising a control chip comprising a processor and a memory storing a control program that is executed by the processor to implement the method of position calibration of a printhead according to any one of claims 1 to 3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111623632.XA CN114290825B (en) | 2021-12-28 | 2021-12-28 | Position calibration method of printing head and ink-jet printer |
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| CN202111623632.XA CN114290825B (en) | 2021-12-28 | 2021-12-28 | Position calibration method of printing head and ink-jet printer |
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| CN114290825B true CN114290825B (en) | 2023-06-20 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1120171A (en) * | 1997-06-30 | 1999-01-26 | Hitachi Ltd | Apparatus for correcting printing distortion of ink-jet printer |
| US6464319B1 (en) * | 1998-10-27 | 2002-10-15 | Canon Kabushiki Kaisha | Adjustment method of dot printing positions and a printing apparatus |
| JP2003326685A (en) * | 2002-05-17 | 2003-11-19 | Konica Minolta Holdings Inc | Method for correcting printing position deviation of inkjet recorder, and inkjet recorder |
| TWI250084B (en) * | 2004-12-08 | 2006-03-01 | Ind Tech Res Inst | Method of calibrating inkjet print head |
| CN1788998A (en) * | 2004-12-16 | 2006-06-21 | 财团法人工业技术研究院 | Ink-jet head calibration method |
| CN101161458A (en) * | 2006-10-09 | 2008-04-16 | 明基电通股份有限公司 | Detecting and compensating method for ink gun deflection as well as corresponding printer system |
| CN101204888A (en) * | 2006-12-18 | 2008-06-25 | 明基电通股份有限公司 | Printer applicable to uni-directional printing adjusting printing deviation and adjusting method |
| CN110143055A (en) * | 2018-05-22 | 2019-08-20 | 广东聚华印刷显示技术有限公司 | The bearing calibration of ink droplet drops positional shift, device and system |
| CN111328310A (en) * | 2017-11-13 | 2020-06-23 | 惠普发展公司，有限责任合伙企业 | Interference patterns for printer calibration |
| TW202110658A (en) * | 2019-05-12 | 2021-03-16 | 以色列商納米尺寸技術領域股份有限公司 | Nozzle analyzing methods and systems |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6779868B2 (en) * | 2001-07-06 | 2004-08-24 | Benq Corporation | Printer with a calibration position positioned within a printing range |
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2021
- 2021-12-28 CN CN202111623632.XA patent/CN114290825B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1120171A (en) * | 1997-06-30 | 1999-01-26 | Hitachi Ltd | Apparatus for correcting printing distortion of ink-jet printer |
| US6464319B1 (en) * | 1998-10-27 | 2002-10-15 | Canon Kabushiki Kaisha | Adjustment method of dot printing positions and a printing apparatus |
| JP2003326685A (en) * | 2002-05-17 | 2003-11-19 | Konica Minolta Holdings Inc | Method for correcting printing position deviation of inkjet recorder, and inkjet recorder |
| TWI250084B (en) * | 2004-12-08 | 2006-03-01 | Ind Tech Res Inst | Method of calibrating inkjet print head |
| CN1788998A (en) * | 2004-12-16 | 2006-06-21 | 财团法人工业技术研究院 | Ink-jet head calibration method |
| CN101161458A (en) * | 2006-10-09 | 2008-04-16 | 明基电通股份有限公司 | Detecting and compensating method for ink gun deflection as well as corresponding printer system |
| CN101204888A (en) * | 2006-12-18 | 2008-06-25 | 明基电通股份有限公司 | Printer applicable to uni-directional printing adjusting printing deviation and adjusting method |
| CN111328310A (en) * | 2017-11-13 | 2020-06-23 | 惠普发展公司，有限责任合伙企业 | Interference patterns for printer calibration |
| CN110143055A (en) * | 2018-05-22 | 2019-08-20 | 广东聚华印刷显示技术有限公司 | The bearing calibration of ink droplet drops positional shift, device and system |
| TW202110658A (en) * | 2019-05-12 | 2021-03-16 | 以色列商納米尺寸技術領域股份有限公司 | Nozzle analyzing methods and systems |
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| CN114290825A (en) | 2022-04-08 |
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