CN110949016A - UV ink printing control method and UV ink-jet printer - Google Patents
UV ink printing control method and UV ink-jet printer Download PDFInfo
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- CN110949016A CN110949016A CN201911192894.8A CN201911192894A CN110949016A CN 110949016 A CN110949016 A CN 110949016A CN 201911192894 A CN201911192894 A CN 201911192894A CN 110949016 A CN110949016 A CN 110949016A
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- printing
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- control method
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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
- B41J2/21—Ink jet for multi-colour printing
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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
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0015—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
- B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
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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
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
- B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
Abstract
The invention discloses a UV ink printing control method and a UV ink-jet printer, wherein the UV ink printing control method comprises the following steps: a printing medium heating step: controlling a heating device to heat a printing medium which receives UV printing ink with at least two different colors to mix colors to a preset temperature; UV ink color mixing printing: printing at least two different color UV inks onto a print medium by a UV ink jet printer, and the UV inks have a particle size of 0.005 to 15 μm. The invention can ensure that different UV printing inks have good intermiscibility for mixed color printing, can prevent the generation of transparent floccules, improves the adhesive force of the mixed color printing ink and a printing medium, and improves the quality of printed products.
Description
Technical Field
The invention relates to the technical field of printing, in particular to a UV ink printing control method and a UV ink-jet printer.
Background
Currently, printing devices mostly use a four-color printing mode (i.e., CMYK). The four-color printing mode is a color register mode used in color printing, and a so-called "full-color printing" is formed by mixing and superimposing four colors in total by using the principle of mixing colors of three primary colors of coloring materials and black ink.
However, when the UV ink is used for ink-jet printing and color mixing with the ink amount concentration of more than 300%, when two or more UV inks are used for color mixing, transparent floccules are easy to appear on ink droplets, which is not favorable for subsequent drying and curing, and also reduces the adhesion between the mixed color ink and a printing medium, and also influences the quality of a printed product.
Therefore, it is desirable to provide a UV ink printing control method and a UV inkjet printer that do not generate transparent floc when printing with UV ink, improve adhesion between mixed color ink and a printing medium, and have high printing quality.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a UV ink printing control method, which comprises the following steps: a printing medium heating step: controlling a heating device to heat a printing medium which receives UV printing ink with at least two different colors to mix colors to a preset temperature; UV ink color mixing printing: printing at least two different color UV inks onto a print medium by a UV ink jet printer, and the UV inks have a particle size of 0.005 to 15 μm.
Further, the control method further comprises the following steps: UV ink curing step: and after the ink color mixing printing step is finished, waiting for preset time, and controlling a UV curing lamp to carry out illumination curing on the mixed color UV ink.
Further, the heating device is controlled to obtain a preset temperature of 30 ℃ to 40 ℃.
Further, in the UV ink color mixing printing step, a multi-PASS printing mode is adopted for printing.
Further, the ink amount concentration of the UV ink is 120% to 300%.
Further, the at least two different color UV inks are at least two of cyan, magenta, yellow, and black.
Further, the printing medium is a PET film, a glass plate, advertising paper, white cloth or canvas, and the heating device is a heating wire, a heating plate or/and a wind-heat heater.
Further, the UV ink-jet printer comprises a memory, a spray head for printing and a temperature measuring device for detecting the temperature of the printing medium, wherein the memory stores a plurality of printing media and corresponding preset temperatures, and the control method further comprises the following steps: a step of measuring the temperature of the printing medium: and controlling the temperature measuring device to measure the temperature of the printing medium, and controlling the heating device and the spray head to work according to the comparison result of the temperature measurement and the preset temperature.
In order to achieve another purpose of the invention, the invention also provides a UV ink-jet printer, which applies any one of the UV ink printing control methods.
Furthermore, the UV ink-jet printer adopts a multi-PASS printing mode and comprises a printing trolley and a spray head arranged on the printing trolley, and two temperature measuring devices are respectively arranged on two sides of the spray head relative to the moving direction of the printing trolley.
The invention has the beneficial effects that: according to the UV ink printing control method and the UV ink-jet printer, on one hand, a printing medium is heated to a certain degree, and on the other hand, the particle size of the UV ink adopted by mixed-color printing is smaller than that of the existing UV ink, so that different UV inks are good in intermiscibility during mixed-color printing, transparent floccules can be prevented from being generated, and the adhesion force between the mixed-color ink and the printing medium can be improved due to the fact that the printing medium is heated to a certain degree, and the quality of a printed product is improved.
Drawings
FIG. 1 is a schematic flow chart of a UV ink printing control method according to the present invention;
FIG. 2 is a schematic flow diagram corresponding to FIG. 1 with the addition of a UV ink curing step;
FIG. 3 is a schematic flow chart corresponding to FIG. 1 with the addition of a step of measuring the temperature of the print medium.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
Referring to fig. 1, the present invention provides a UV ink printing control method, including the steps of: a printing medium heating step S10 and a UV ink mixed color printing step S20, wherein, in the printing medium heating step S10, the heating device is controlled to heat the printing medium receiving at least two different color UV inks to be mixed to a preset temperature, the two different color UV inks being ejected substantially simultaneously by the ejection head to the same printing area of the printing medium to be mixed in color to obtain the mixed color ink. In the UV ink color mixing printing step S20, at least two different color UV inks are printed on the printing medium by the UV inkjet printer, it should be understood that since the ejection speed of each of the nozzles of the UV inkjet printer which respectively eject the different color UV inks is fast, the at least two different color UV inks are respectively printed on the printing medium only for a very short time interval, and thus, they can be considered to be simultaneously printed on the printing medium. The ink particles of various UV inks are finely ground to enable the particle size range to be 0.005-15 mu m, the particle size of the UV ink adopted by the UV ink printing control method is smaller, the intermiscibility of two different UV inks during color mixing is improved, the printing medium on which the UV ink is printed is preheated to a preset temperature, the intermiscibility of the different inks is improved, the subsequent drying and curing of the mixed color UV ink are accelerated, and the adhesive force of the mixed color UV ink and the printing medium is improved.
Referring to fig. 2, further, the control method further includes a UV ink curing step S30: after the ink color mixing printing step S20 is completed, waiting for a predetermined time, and then controlling a UV curing lamp to perform light curing on the mixed color UV ink, wherein the predetermined time is set to 1 second to 1 minute, the predetermined time is determined comprehensively according to the specific color, the adhesive property, the permeability and the like of the UV ink for color mixing, and the UV curing lamp may be a UV-LED lamp or a UV mercury lamp.
Preferably, the heating device is controlled to obtain a preset temperature of 30 ℃ to 40 ℃, the preset temperature can be determined according to the material of the printing medium, the chemical property of the UV ink and the like, and repeated experiments by the inventor show that the effect of preventing the transparent floccule is optimal when the preset temperature is set to be 30 ℃ to 40 ℃.
Preferably, in the step S20 of printing with mixed UV inks, a multi-PASS printing method is used for printing, for example, in the case of printing with mixed UV inks on the same printing area for more than two times, when the first PASS printing is completed, the UV inks with two different colors are mixed to obtain a first mixed color, and when the second PASS printing is performed, the UV inks with two different colors are mixed to obtain a second mixed color, wherein at least one of the UV inks has a color different from the two UV inks in the first PASS printing, because the UV ink ejected by the second PASS printing is located on the surface of the first mixed color and has a surface tension, the second PASS printing first obtains the second mixed color, and then the second mixed color sinks below the surface under the action of gravity and the movement of the ink droplets and is mixed with the first mixed color, when the PASS is more than three times, such a pair can be used without repeated description, in this way, a print product with high resolution and various mixed colors can be obtained by the multi-PASS printing method.
In order to further improve the compatibility and application of different UV inks, the ink content concentration of the UV ink is 120% to 300%.
In addition, in order to realize the four-color printing mode, the at least two different color UV inks are at least two of cyan, magenta, yellow, and black.
In order to improve the application scene of the UV ink printing control method, the printing medium is a PET film, a glass plate, advertisement paper, white cloth or canvas, the heating device is a heating resistance wire, a heating plate or/and a wind-heat heater, for example, the heating resistance wire can be more suitable for the glass plate and the advertisement paper with better heat conductivity, the heating plate can be more suitable for the white cloth or the canvas with relatively poor heat conductivity, and the wind-heat heater can be more suitable for the PET film with higher heat sensitivity, therefore, the heating temperature of the corresponding printing medium can be ensured to be integrally uniform by reasonably configuring any one heating device or starting one of the corresponding heating devices. However, from the viewpoint of cost saving, the heating device preferably employs any of the above, and substantially the same technical effects can be achieved.
Referring to fig. 3, further, the UV inkjet printer includes a memory, a nozzle for printing, and a temperature measuring device for detecting a temperature of a printing medium, and it is possible that the temperature measuring device is installed on a supporting device, such as a printing support, of the UV inkjet printer for supporting and fixing the printing medium, or on a printing cart for mounting the nozzle, as long as the temperature measuring device measures a heated temperature of the printing medium before each printing, the memory stores a plurality of printing media and corresponding preset temperatures, and the control method further includes a printing medium temperature measuring step S15: control temperature measuring device carries out the temperature measurement to printing medium to the work of heating device and shower nozzle is controlled according to the temperature measurement and the temperature comparison result of predetermineeing, that is to say, through this step, has guaranteed that each UV printing ink is printed the printing medium that arrives and has the temperature of predetermineeing, transparent flocculus can not appear when the guarantee colour mixture is printed. It should be understood that the order of the printing medium temperature measuring step S15 with respect to the printing medium heating step S10 is not particularly limited, and preferably, with reference to fig. 2, the printing medium temperature measuring step S15 is performed after the printing medium heating step S10 and before the UV ink color mixing printing step S20. In addition, the heating device may be provided with a temperature measuring device, the temperature of the space near the heating device is detected by the temperature measuring device, and the temperature of the space near the heating device is very close to the temperature of the printing medium, so that the heating device performs control such as corresponding switching and heating power adjustment according to the temperature of the space near the heating device, and therefore, the printing medium may be maintained at a preset temperature by adjusting the detected temperature of the space near the heating device, and in this case, the printing medium temperature measuring step S15 is not required, and the same technical effect is obtained.
For a better understanding of the invention and experimental verification by the inventors, the content of the invention is further elucidated below in connection with some specific embodiments, for the thickness of each print medium, the following is given by way of example only, and the inventive concept of the invention is implemented without dependency on this thickness.
Example 1:
the UV ink is cyan and yellow, the particle size is 0.005 mu m, a PET film with the thickness of 0.05mm is used as a printing medium, and the printing medium is heated to 30 ℃, so that the compatibility of the cyan UV ink and the yellow UV ink is improved.
Example 2:
the UV inks are cyan and magenta with a particle size of 10 μm, and a glass plate with a thickness of 0.05mm is used as a printing medium, and the medium is heated to 40 ℃ to improve the compatibility of the cyan and magenta UV inks.
Example 3:
the UV ink is cyan and black, the particle size is 15 mu m, advertising paper with the thickness of 0.104mm is used as a printing medium, the printing medium is heated to 35 ℃, and the compatibility of the cyan UV ink and the black UV ink is improved.
Example 4:
the UV ink is magenta and yellow, has a particle size of 15 μm, and is heated to 35 ℃ with a white cloth having a thickness of 0.5mm as a printing medium, thereby improving the compatibility of the magenta and yellow UV inks.
Example 5:
the UV ink is magenta and black, has a particle size of 10 μm, and is heated to 35 ℃ by using advertising paper with a thickness of 0.104mm as a printing medium, so that the compatibility of the magenta and black UV inks is improved.
Example 6:
the UV printing ink is yellow and black, the particle size is 10 mu m, canvas with the thickness of 0.5mm is used as a printing medium, the printing medium is heated to 35 ℃, and the intermiscibility of the yellow printing ink and the black printing ink is improved.
The invention also provides a UV ink-jet printer, which applies any one of the UV ink printing control methods, and can know that the UV ink-jet printer comprises a printing support and a controller, wherein the printing support is used for supporting and fixing a printing medium, the controller is used for integrally and coordinately controlling the movement of the printing support, the jetting of a nozzle, a heating device and the work of a temperature measuring device, and the controller can be a CPU, a PLC and the like.
As a further improvement, the UV inkjet printer adopts a multi-PASS printing mode and includes a printing carriage and a nozzle disposed on the printing carriage, two temperature measuring devices are respectively disposed on two sides of the nozzle relative to the moving direction of the printing carriage, and the temperature measuring devices may be infrared temperature measuring sensors, so that each temperature measuring device may correspond to each PASS, and the nozzle reaches a printing area of UV ink jetted by the nozzle in advance, thereby ensuring that a printing medium, especially the printing area, to which two different colors of UV inks are jetted has a preset temperature, thereby measuring the temperature at which the UV ink is to be printed on the printing area with high accuracy, further maintaining or reaching the preset temperature by controlling the operation of the heating device, and further reducing the possibility of generating transparent floccules.
It should be noted that, the specific corresponding selection of the printing medium and the preset temperature thereof, and the specific value of the particle size of the UV ink may be selected and determined by those skilled in the art according to the actual printing requirements.
A detailed description of known methods is omitted herein for the sake of brevity. In the foregoing specification, several specific steps have been described and illustrated as examples. However, the method processes of the present invention are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps, or perform several steps simultaneously, after comprehending the spirit of the present invention.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
- The printing control method of the UV printing ink is characterized by comprising the following steps: the method comprises the following steps:a printing medium heating step: controlling a heating device to heat a printing medium which receives UV printing ink with at least two different colors to mix colors to a preset temperature;UV ink color mixing printing: printing the at least two different color UV inks onto the print medium by a UV inkjet printer, and the UV inks have a particle size of 0.005 to 15 μm.
- 2. The control method according to claim 1, characterized in that:the control method further comprises the following steps:UV ink curing step: and after the ink color mixing printing step is finished, waiting for preset time, and controlling a UV curing lamp to carry out illumination curing on the mixed color UV ink.
- 3. The control method according to claim 1, characterized in that:controlling the heating device to obtain the preset temperature of 30-40 ℃.
- 4. The control method according to claim 1, characterized in that:and in the UV ink mixed color printing step, the printing is carried out by adopting a multi-PASS printing mode.
- 5. The control method according to claim 1, characterized in that:the UV ink has an ink amount concentration of 120% to 300%.
- 6. The control method according to claim 1, characterized in that:the at least two different color UV inks are at least two of cyan, magenta, yellow, and black.
- 7. The control method according to claim 1, characterized in that:the printing medium is a PET film, a glass plate, advertisement paper, white cloth or canvas, and the heating device is a heating resistance wire, a heating plate or/and a wind-heat heater.
- 8. The control method according to claim 1, characterized in that:the UV ink-jet printer comprises a memory, a spray head for printing and a temperature measuring device for detecting the temperature of the printing medium, wherein the memory stores a plurality of printing media and corresponding preset temperatures, and the control method further comprises the following steps:a step of measuring the temperature of the printing medium: and controlling the temperature measuring device to measure the temperature of the printing medium, and controlling the heating device and the spray head to work according to the comparison result of the temperature measurement and the preset temperature.
- A UV ink jet printer characterized by: printing control method using the UV ink according to any one of claims 1 to 8.
- 10. The UV inkjet printer of claim 9, wherein:the UV ink-jet printer adopts a multi-PASS printing mode and comprises a printing trolley and a spray head arranged on the printing trolley, wherein two sides of the spray head relative to the moving direction of the printing trolley are respectively provided with a temperature measuring device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911192894.8A CN110949016B (en) | 2019-11-28 | 2019-11-28 | UV ink printing control method and UV ink-jet printer |
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| CN201911192894.8A CN110949016B (en) | 2019-11-28 | 2019-11-28 | UV ink printing control method and UV ink-jet printer |
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