CN112223929B - Ink-jet printing method, device and equipment based on feathering treatment and storage medium - Google Patents
Ink-jet printing method, device and equipment based on feathering treatment and storage medium Download PDFInfo
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- CN112223929B CN112223929B CN202011132922.XA CN202011132922A CN112223929B CN 112223929 B CN112223929 B CN 112223929B CN 202011132922 A CN202011132922 A CN 202011132922A CN 112223929 B CN112223929 B CN 112223929B
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- 238000000034 method Methods 0.000 title claims abstract description 66
- 238000007641 inkjet printing Methods 0.000 title claims abstract description 48
- 238000003860 storage Methods 0.000 title claims abstract description 13
- 238000007639 printing Methods 0.000 claims abstract description 262
- 238000004590 computer program Methods 0.000 claims abstract description 10
- 238000007711 solidification Methods 0.000 claims abstract description 8
- 230000008023 solidification Effects 0.000 claims abstract description 8
- 230000032669 eclosion Effects 0.000 claims description 55
- 230000006870 function Effects 0.000 claims description 37
- 230000008569 process Effects 0.000 claims description 29
- 239000007921 spray Substances 0.000 claims description 27
- 238000001723 curing Methods 0.000 description 30
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- 238000004891 communication Methods 0.000 description 6
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- 238000012545 processing Methods 0.000 description 5
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- 238000010924 continuous production Methods 0.000 description 1
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- 230000014759 maintenance of location Effects 0.000 description 1
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- 239000003504 photosensitizing agent Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
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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
- 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
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
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Abstract
The invention discloses an ink-jet printing method, device and equipment based on feathering and a storage medium, and relates to the technical field of ink-jet printing. The ink-jet printing method based on the feathering treatment comprises the following steps: acquiring printing precision, printing mode and feathering amplitude; determining the amount of printing ink of each region of a printed image formed in single-pass printing; determining an output power; executing one scanning printing; the printed image is cured. The printing apparatus includes: the device comprises an acquisition module, a printing ink amount determining module, an output power determining module, a scanning printing module and a printing image curing module. The printing device includes a processor, a memory, and computer program instructions stored in the memory. The storage medium stores computer program instructions. The ink-jet printing method, the ink-jet printing device, the ink-jet printing equipment and the ink-jet printing medium based on the feathering treatment can ensure that the printing image quality is uniform and effectively inhibit a solidification channel and a feathering channel in a product.
Description
Technical Field
The invention relates to the technical field of ink-jet printing, in particular to an ink-jet printing method, device and equipment based on feathering treatment and a storage medium.
Background
The ink jet printing technology refers to a technology of ejecting ink droplets onto a printing medium through an ejection head to obtain an image or text. The technology is non-contact printing, has the technical advantages of high printing speed, little pollution, bright image color, long image retention period, suitability for various printing media and the like, and is widely applied to the fields of advertisement manufacturing, office cultural goods devices, printing and proofing and the like.
The ink-jet printing technology is a technology of printing ink on a target carrier according to a certain rule through a spray head, and because the height of the spray head is certain, a wide-width printing product is realized through spray head splicing or continuous multi-PASS printing. In order to improve the printing effect, the feathering printing technology is often adopted to divide the data of the original hard splicing position, such as the nozzle splicing position and the PASS splicing area, into two parts for carrying out two times of fault-tolerant printing, so that one part of the pixel point data of the splicing area is printed for the first time, and the other part is printed for the second time.
In order to improve the quality of printed products, UV printing processes are often used in the prior art. UV printing is a printing process that dries, cures ink by UV light, requiring that the ink containing the photosensitizer be fitted to a UV curing lamp. The UV printing process can improve the brightness and artistic effect of the product, protect the surface of the product, improve the surface hardness of the product, enable the product to resist corrosion and friction and prevent scratches from occurring easily.
The current UV curing mode adopts a nondifferential irradiation mode, so that the curing degree of ink on the whole picture is different, the UV printing image quality is uneven, the phenomenon of curing channels is easy to occur, and the feathering channels can also occur for the printing image adopting feathering treatment.
Disclosure of Invention
The invention provides an ink-jet printing method, device and equipment based on feathering and a storage medium, which are used for solving the technical problems that the printing image quality is not uniform and a curing channel and a feathering channel often occur in the conventional ink-jet printing mode.
In a first aspect, the present invention provides a feathering-based ink jet printing method comprising the steps of:
s1: acquiring printing precision, printing mode and feathering amplitude;
s2: determining the printing ink amount of each area of the printing image formed in the single scanning printing according to the printing precision, the printing mode and the feathering amplitude;
s3: determining output power when curing each area of the printed image according to the printing ink amount of each area of the printed image, wherein different printing ink amounts correspond to different output powers;
s4: executing one scanning printing;
s5: and outputting corresponding output power to each area of the printed image for solidification.
Preferably, the printing precision includes a height of the nozzle, the feathering amplitude is a feathering height, and the S2: determining the printing ink amount of each area of the printing image formed in the single scanning printing according to the printing precision, the printing mode and the feathering amplitude;
s21: dividing the spray head into a first eclosion area, a non-eclosion area and a second eclosion area in turn along the height direction of the spray head according to the height of the spray head and the eclosion height;
s22: determining the ink output of each nozzle according to the nozzle area where each nozzle in the nozzle is located;
s23: and determining the printing ink amount of each area of the printing image according to the ink output amount of each nozzle and the corresponding relation between each nozzle and each area of the formed printing image in single-scanning printing.
Preferably, at S22: in determining the ink discharge amount of each nozzle according to the nozzle area where each nozzle is located in the nozzle, the ink discharge amount of each nozzle located in the non-feathering region is a basic ink discharge amount, the ink discharge amount of each nozzle located in the first feathering region is gradually reduced from a position close to the non-feathering region to a position away from the non-feathering region, the maximum value of the ink discharge amount of the nozzle located in the first feathering region is less than or equal to the basic ink discharge amount, the ink discharge amount of each nozzle located in the second feathering region is gradually reduced from a position close to the non-feathering region to a position away from the non-feathering region, and the maximum value of the ink discharge amount of the nozzle located in the second feathering region is less than or equal to the basic ink discharge amount.
Preferably, at S22: determining the ink output quantity of each nozzle according to the nozzle area where each nozzle in the nozzle is located, wherein the ink output quantity of each nozzle meets a first function, and the first function is;
where i is a nozzle index in the nozzle arrangement direction, eclH represents a feathering height, JetH represents a head height, and the function value of density (i) is an ink discharge amount of the ith nozzle, where i is an integer, and eclH and JetH are positive integers.
Preferably, the independent variable of the first function is normalized, and the first function is fitted to obtain a continuous second function density (x), wherein x represents a coordinate value of a position along the nozzle arrangement direction, and 0 ≦ x ≦ 1, wherein the function value of density (x) is the printing ink amount of the printing image at the position where the coordinate value is x in the single scanning printing.
Preferably, it is characterized in that: at S3: and determining the output power of the UV lamp when curing each area of the printed image according to the printing ink amount of each area of the printed image, wherein different printing ink amounts correspond to different output powers, and the output power of the UV lamp when curing the printed image is in direct proportion to the printing ink amount of the printed image at the current curing position.
Preferably, assuming the maximum UV lamp power is PMax, at S3: determining the output power of the UV lamp when the ink in each area of the printed image is solidified according to the printing ink amount of each area of the printed image, wherein in different output powers corresponding to different printing ink amounts, power functions of different positions of the UV lamp are as follows:
P(x)＝Density(x)*PMax
where P (x) represents the output power of the UV lamp when curing the ink at coordinate value x.
In a second aspect, the present invention provides an ink jet printing apparatus based on feathering, the apparatus comprising:
an obtaining module for obtaining printing precision, printing mode and feathering amplitude;
a printing ink amount determination module for determining the amount of printing ink of each region of a printed image formed in single-scan printing according to the printing accuracy, the printing mode, and the feathering amplitude;
the output power determining module is used for determining the output power of each area of the printed image when the printing ink amount of each area of the printed image is solidified, and different printing ink amounts correspond to different output powers;
the scanning and printing module is used for executing one-time scanning and printing;
and the printed image curing module is used for outputting corresponding output power to each area of the printed image for curing.
In a third aspect, the present invention provides a feathering-based ink jet printing apparatus comprising at least one processor, at least one memory and computer program instructions stored in the memory which, when executed by the processor, implement the method of the first aspect.
In a fourth aspect, the present invention provides a storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method of the first aspect:
has the advantages that: in summary, the ink jet printing method, apparatus, device and storage medium based on feathering provided by the invention first obtain the printing ink amount of each area of the printed image, and then determine the output power of the UV lamp when the UV lamp irradiates a certain position of the printed image according to the printing ink amount of each area. Since the printing ink amounts in the respective areas of the printed image are different, the output power of the UV lamp in this embodiment is also adjusted according to the printing ink amounts in the respective areas, and different output powers are used to cure the positions with different printing ink amounts in the printed image during the curing process. Therefore, although the printing ink amount of each area of the printed image is different, the output power of the UV lamp can be matched with the printing ink amount of each area, each area of the printed image is accurately cured, the curing degree of the printing ink of each area can be close to the ideal degree to the maximum extent, and the quality of the printed product is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of an ink jet printing method based on feathering of embodiment 1 of the present invention.
Fig. 2 is a flowchart of determining the amount of printing ink for each area of a printed image in embodiment 2 of the present invention.
FIG. 3 is a schematic view of the nozzle emergence zone at an emergence height of 100 according to the present invention.
FIG. 4 is a schematic diagram of a printing process using the 4pass printing mode of the present invention.
FIG. 5 is a schematic view of the nozzle emergence zone at an emergence height of 72 according to the present invention.
FIG. 6 is a schematic diagram of a printing process using the 6pass printing mode of the present invention.
Fig. 7 is a block diagram showing the structure of a printing apparatus based on feathering in embodiment 4 of the present invention.
Fig. 8 is a block diagram of the structure of a printing apparatus based on feathering in embodiment 6 of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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, an element defined by the phrase "comprising … …" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.
Example 1
The ink-jet printing method based on the feathering treatment comprises the steps of firstly obtaining the printing ink amount of each area of a printed image, then adjusting the output power of a UV lamp when the UV lamp irradiates a certain position of the printed image according to the printing ink amount of each area, so that the output power of the UV lamp is matched with the printing ink amount of each area, the accurate solidification of each area of the printed image is realized, the solidification degree of the ink in each area can be close to the ideal degree to the maximum extent, and the quality of a printed product is greatly improved.
Referring to fig. 1, the ink jet printing method based on feathering provided by the embodiment includes the following steps:
an ink jet printing method based on feathering, comprising the steps of:
s1: acquiring printing precision, printing mode and feathering amplitude;
s2: determining the printing ink amount of each area of the printing image formed in the single scanning printing according to the printing precision, the printing mode and the feathering amplitude;
s3: determining the output power of a UV lamp when curing each area of the printed image according to the printing ink amount of each area of the printed image, wherein different printing ink amounts correspond to different output powers;
s4: controlling the spray head to perform one-time scanning printing;
s5: and controlling a UV lamp to cure the printed image according to the output power.
Wherein, the printing precision comprises the transverse precision and the longitudinal precision of the printing device. For example, the nozzle row height of a nozzle head used in a printing apparatus is 360, that is, 360 nozzles are included, the nozzle arrangement accuracy is 360DPI, and the longitudinal accuracy of the apparatus is 360 DPI. For example, a printing device positions a nozzle with a raster reference accuracy of 360 DPI. The lateral accuracy of the printing device is 360 DPI.
The printing modes comprise an Onepass printing mode and a multi-pass printing mode.
The multi-pass scanning printing means that each unit of an image to be printed can be printed only by carrying out interpolation for multiple times, each unit consists of a plurality of pixel points, if 2 passes scanning printing is carried out, each unit consists of 2 pixel points, and if 3 passes scanning printing is carried out, each unit consists of 3 pixel points; the one-time scanning printing is also called single-pass scanning printing and multi-pass printing, has low printing efficiency and small yield, but has low price and is suitable for small-batch and intermittent production. The single pass scanning printing means that each unit of the image to be printed can be printed only by once scanning; the multi-nozzle side-by-side scanning printing is also called Oneepass scanning printing, and the Oneepass scanning printing refers to finishing printing an image to be printed at one time. Oneeglass printing has the advantages of high efficiency and large output, and is suitable for a large-batch and continuous production mode.
The wide-width printing product is realized by spray head splicing or continuous multi-pass printing. The multi-pass printing mode is divided according to the number of times of scanning of the sprayer printing the same area, namely the pass number, for example, the mode of printing 2 passes is needed to be scanned for completing printing, and the mode of printing 4 passes is needed to be scanned for completing printing 4 times. In the present application, the single scan printing means one scan printing by the head unless otherwise specified. For example, in the 4pass print mode, the 1 st pass print or the 2 nd pass print process is a single pass print process. The nozzle performs one-time scanning printing in the application refers to the nozzle performing one pass printing. If the Oneepass scanning printing is adopted, the single scanning printing indicates that the sprayer completes the process of printing the image by one scanning.
The nozzle moves along the scanning direction in a single scanning printing process and simultaneously sprays and prints the ink on a printing medium to form a corresponding printing pattern. Therefore, the print image formed in the single scan printing in S2 is a print image formed on the print medium by the ink ejected from the head in the single scan printing. If the multi-pass printing mode is adopted, the target image finally formed on the printing medium is composed of the print images formed in the scan printing of all passes in common.
The amount of ink discharged from the head at different positions in a single scan printing is different, and the concentration of ink already present on the printing medium (i.e., the amount of printing ink) is also different. And inkjet printing using a UV curing process is formed by curing ink on a printing medium by irradiating it with a UV lamp. When the output power of the UV lamp is different, the degree of curing of the ink irradiated by the UV lamp is also different.
In this regard, the present embodiment first obtains the amount of printing ink in each area of the printed image, and then determines the output power of the UV lamp when the UV lamp irradiates a certain position of the printed image according to the amount of printing ink in each area. Because the printing ink amount of each area of the printed image is different, the output power of the UV lamp in this embodiment is also adjusted according to the printing ink amount of each area, and different output powers are used to cure positions with different printing ink amounts in the printed image in the curing process, that is, different output powers are used by the UV lamps with different printing ink amounts to cure. Therefore, although the printing ink amount of each area of the printed image is different, the output power of the UV lamp can be matched with the printing ink amount of each area, each area of the printed image is accurately cured, the curing degree of the printing ink of each area can be close to the ideal degree to the maximum extent, and the quality of the printed product is greatly improved. The embodiment can also adopt the mode that the image formed by the printing is solidified in the printing process, the ink quantity of each solidification is matched with the ink sprayed and printed on the printing medium by the printing nozzle, and thus the solidification degree of the printed image is not influenced by the accumulated ink quantity of each area.
Example 2
In addition, inkjet printing techniques are often employed in inkjet printing to eliminate the effect of jet stitching or pass stitching on the printed image. However, after the ink-jet printing technology is adopted, uneven eclosion channels are easy to appear on printed products, and the problem puzzles technical personnel in the field of ink-jet printing for a long time and is not well solved all the time. The present example was modified based on example 1 to obtain the following ink-jet printing scheme:
this embodiment describes a method for performing inkjet printing with different feathering templates for different passes in multi-pass printing, which specifically includes:
the printing precision includes a height of the nozzle, and the feathering amplitude is a feathering height, as shown in fig. 2, the S2: determining the printing ink amount of each area of the printing image formed in the single scanning printing according to the printing precision, the printing mode and the feathering amplitude;
s21: dividing the nozzle into three nozzle regions of a first eclosion region 110, a non-eclosion region 120 and a second eclosion region 130 in sequence along the height direction of the nozzle according to the height of the nozzle and the eclosion height;
s22: determining the ink output of each nozzle according to the nozzle area where each nozzle in the nozzle is located;
s23: and determining the printing ink amount of each area of the printing image according to the ink output amount of each nozzle and the corresponding relation between each nozzle and each area of the formed printing image in single-scanning printing.
As shown in fig. 3 and 5, the height direction of the head refers to a direction (x direction in the drawing) perpendicular to the moving direction of the print head for single scanning of the head. For a print job of ink-jet printing using the feathering technique, the present embodiment partitions the heads according to the partition of the feathering, and divides the heads in the height direction thereof into three head regions, the first feathering region 110, the non-feathering region 120, and the second feathering region 130. Since one head includes one or more rows of nozzles arranged in the height direction of the head. The individual nozzles of the spray head are therefore located in the three spray head regions. When the feathering process is performed, the ink discharge amount of the nozzles in different areas and the change rule of the ink discharge amount are different, and the ink discharge amount of the nozzles is determined according to the area where the nozzles are located at the time of the feathering printing in the present embodiment. Since the ink jet printing process is a process in which the nozzles jet ink onto the printing medium, the nozzles have a corresponding relationship with the position of the printed image when printing, and the amount of ink jetted from the nozzles onto a certain area of the printed image determines the amount of printing ink at that position. The present embodiment can accurately obtain the amount of printing ink for each area of a printed image according to the amount of ink discharged from the nozzles of different areas in feathering printing. After the printing ink amount of each area of the printed image determined according to the eclosion area is obtained, the output power of the UV lamp during UV curing can be adjusted according to the printing ink amount of each area, so that the curing degree of the printing ink of each area of the printed image can accurately meet the requirement of printing quality. By adopting the scheme, the eclosion channel generated on the printed product after the eclosion printing is adopted can be successfully inhibited, so that the quality of the printing quality is obviously improved.
Further, at S22: in determining the ink discharge amount of each nozzle according to the head region where each nozzle in the head is located, the ink discharge amount of each nozzle in the non-feathering region 120 is a basic ink discharge amount, the ink discharge amount of each nozzle in the first feathering region 110 is gradually reduced from a position close to the non-feathering region 120 toward a position away from the non-feathering region 120, and the maximum value of the ink discharge amount of the nozzles in the first feathering region 110 is less than or equal to the basic ink discharge amount, the ink discharge amount of each nozzle in the second feathering region 130 is gradually reduced from a position close to the non-feathering region 120 toward a position away from the non-feathering region 120, and the maximum value of the ink discharge amount of the nozzles in the second feathering region 130 is less than or equal to the basic ink discharge amount.
Wherein the basic ink amount may be a maximum ink amount when each nozzle discharges ink at one time. For example, the ink discharge amount of each nozzle located at the non-feathering region 120 is a basic ink discharge amount of 100%, the ink discharge amount of each nozzle located at the first feathering region 110 and the second feathering region 130 varies between the basic ink discharge amounts of 0 and 100%. The variation rule may be a rule that the amount of ink discharged gradually decreases from the non-feathering region 120 toward the feathering region. That is, the nozzles in the first and second feathering regions 110 and 130, the closer to the non-feathering region 120 the more ink the amount of the nozzles, the further from the non-feathering region 120 the less the amount of the nozzles. By adopting the ink output variation rule, the eclosion channel formed on the printed product during the eclosion printing can be further eliminated.
Further, at S22: determining the ink output quantity of each nozzle according to the nozzle area where each nozzle in the nozzle is located, wherein the ink output quantity of each nozzle meets a first function, and the first function is;
where i is a nozzle index in the nozzle arrangement direction, eclH represents a feathering height, JetH represents a head height, and the function value of Density (i) is the ink discharge amount of the ith nozzle, where i is an integer, and eclH and JetH are positive integers.
Since the nozzles of the head are arranged in the height direction of the head, the intervals between two adjacent nozzles are equal in the same row of nozzles in the height direction of the head, and thus the height of the head is equal to the product of the number of nozzles and the interval between two adjacent nozzles. The height can therefore be expressed in terms of the number of nozzles in the spray head. If one nozzle is set as one point, the height of the head can be expressed by the number of points. For example, a row of nozzles includes 360 nozzles, the number of dots of the nozzle is 360, and the height of the nozzle is 360 × d, where d is the distance between two adjacent nozzles. The corresponding EclH may also be expressed in terms of points, for example, a point of 100 EclH may represent 100 xd.
To facilitate the indication of the height position of each nozzle, the nozzles in the same row on the head may be numbered to form an index of the nozzles. For example, the nozzle at one end portion of the head in its height direction is numbered as the first nozzle (the nozzle is numbered the smallest), the nozzle at the other end portion is numbered as the last nozzle (the nozzle is numbered the largest), wherein the first nozzle is numbered 1, the nozzle next to the first nozzle is numbered 2, the nozzle next to the nozzle No. 2 in the direction away from the nozzle No. 1 is numbered 3, and so on, each nozzle is numbered, and if a head has n nozzles, the last nozzle is numbered n.
For example, the nozzle row height of the nozzle head is 360, i.e., 360 nozzles are included, and the emergence height is 100, i.e., the height corresponding to 100 nozzle arrays. The nozzles are partitioned according to the height of emergence as shown in fig. 3. Then, the nozzles are numbered in the x direction in the figure to form a nozzle index, the first nozzle is numbered 1, and the last nozzle is numbered 360, so that the nozzles No. 1 to 99 are located in the first eclosion region 110, the nozzles No. 100 to 259 are located in the non-eclosion region 120, and the nozzles No. 260 to 360 are located in the second eclosion region 130. Assuming that the print mode is the 4pass print mode, the printing process is as shown in fig. 4.
For another example, the nozzle row height of the nozzle head is 360, i.e., 360 nozzles are included, and the feathering height is 72, i.e., the height corresponding to 72 nozzle arrays. The nozzles are partitioned according to the height of emergence as shown in fig. 5. The nozzles are numbered in the x direction in the figure to form a nozzle index, the first nozzle is numbered 1, and the last nozzle is numbered 360, so that nozzles No. 1 to 71 are located in the first emergence region 110, nozzles No. 72 to 287 are located in the non-emergence region 120, and nozzles No. 288 to 360 are located in the second emergence region 130. Assuming the print mode is the 6pass print mode, the printing process is as shown in FIG. 6
The first function is a piecewise function obtained after partitioning according to the emergence height. The argument i of this function is the nozzle index, and the function value is the ink discharge amount of the ith nozzle. Since the nozzle is divided into three regions according to the height of the emergence, the first function is also divided into three sections, wherein the first section, i.e., the interval of 0 ≦ i < eclH, corresponds to the first emergence region 110, the second section, i.e., the interval of eclH ≦ i < jetH-eclH, corresponds to the non-emergence region 120, and the third section, i.e., the interval of jetH-eclH ≦ i < jetH, corresponds to the second emergence region 130. When the ink output of each nozzle of the nozzle head satisfies the first function, the ink output of the nozzle head in the non-feathering region 120 is the largest, and the ink output of the nozzles in the first feathering region 110 and the second feathering region 130 is uniformly reduced along the direction away from the non-feathering region 120.
In addition, in this embodiment, normalization processing is performed on the independent variable of the first function on the basis of the first function, and a continuous second function density (x) is obtained after fitting the first function, where x represents a coordinate value of a position along the nozzle arrangement direction, and x is greater than or equal to 0 and less than or equal to 1, and the function value of density (x) is the amount of printing ink in a position where the coordinate value is x in a print image in single-scan printing. Wherein the continuous second function density (x) means that the argument of the function changes continuously within the domain of the definition of the function. When x is 0, it indicates the position corresponding to the nozzle whose current position is number 0, and when x is 1, it indicates the position corresponding to the nozzle whose printing position is number n-1.
The implementation converts the first function into a second function with the independent variable continuously changing in the interval x being more than or equal to 0 and less than or equal to 1 through normalization processing and fitting processing. The output power for curing can be accurately adjusted according to the continuous change of the curing position of the UV lamp during curing.
Further, at S3: and determining the output power of the UV lamp when curing each area of the printed image according to the printing ink amount of each area of the printed image, wherein different printing ink amounts correspond to different output powers, and the output power of the UV lamp when curing the printed image is in direct proportion to the printing ink amount of the printed image at the current curing position. The UV lamp used for curing at a position where the amount of printing ink is larger is higher, and conversely, the UV lamp used for curing at a position where the amount of printing ink is smaller is lower. Therefore, the curing degree of each area of the printed image is not influenced by the amount of the printing ink, so that the curing degree of the whole printed product is more uniform.
Specifically, assuming that the UV lamp maximum power is PMax, at S3: determining the output power of the UV lamp when the ink in each area of the printed image is solidified according to the printing ink amount of each area of the printed image, wherein in different output powers corresponding to different printing ink amounts, power functions of different positions of the UV lamp are as follows:
P(x)＝Density(x)*PMax
where P (x) represents the output power of the UV lamp when curing the ink at coordinate value x.
The output power of the UV lamp at different positions of the solidified printed image determined by the formula can enable the output power of the UV lamp to reach a value which is most suitable for the printing ink amount of each area, and enables the solidification degree of each area of the printed image to keep high consistency, so that an uneven eclosion channel cannot be generated.
Example 3
Referring to fig. 7, an embodiment of the present invention provides an inkjet printing apparatus based on feathering, the apparatus including:
an obtaining module for obtaining printing precision, printing mode and feathering amplitude;
a printing ink amount determination module for determining the amount of printing ink of each region of a printed image formed in single-scan printing according to the printing accuracy, the printing mode, and the feathering amplitude;
the output power determining module is used for determining the output power of the UV lamp when the areas of the printed image are solidified according to the printing ink amount of each area of the printed image, and different printing ink amounts correspond to different output powers;
the scanning and printing module is used for controlling the spray head to execute one-time scanning and printing;
and the printed image curing module is used for controlling a UV lamp to cure the printed image according to the output power.
Wherein the printing ink amount determination module further includes:
an eclosion partition sub-module for sequentially dividing the spray head into three spray head regions of a first eclosion region 110, a non-eclosion region 120 and a second eclosion region 130 along the height direction of the spray head according to the height of the spray head and the eclosion height;
the nozzle ink output quantity determining submodule is used for determining the ink output quantity of each nozzle according to the spray head area where each nozzle in the spray head is located;
and the printing ink amount determining submodule is used for determining the printing ink amount of each area of the printing image according to the ink output amount of each nozzle and the corresponding relation between each nozzle and each area of the formed printing image in single-scanning printing.
Example 4
In addition, the ink jet printing method based on the feathering process of the embodiment of the present invention described in conjunction with fig. 8 can be realized by an ink jet printing apparatus based on the feathering process. Fig. 8 is a schematic diagram showing a hardware configuration of an ink jet printing apparatus based on feathering provided by an embodiment of the present invention.
The feathering process-based ink jet printing apparatus can include a processor 401 and a memory 402 having stored thereon computer program instructions.
Specifically, the processor 401 may include a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or may be configured as one or more Integrated circuits implementing embodiments of the present invention.
The processor 401 reads and executes computer program instructions stored in the memory 402 to implement the data addressing method for area random printing in any of the above embodiments.
The feathering process-based inkjet printing apparatus in one example can also include a communication interface 403 and a bus 410. As shown in fig. 6, the processor 401, the memory 402, and the communication interface 403 are connected via a bus 410 to complete communication therebetween.
The communication interface 403 is mainly used for implementing communication between modules, apparatuses, units and/or devices in the embodiments of the present invention.
The bus 410 includes hardware, software, or both that couple components for fractional ink output to each other. By way of example, and not limitation, a bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hypertransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a Micro Channel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus or a combination of two or more of these. Bus 410 may include one or more buses, where appropriate. Although specific buses have been described and illustrated with respect to embodiments of the invention, any suitable buses or interconnects are contemplated by the invention.
Example 5
In addition, in combination with the ink jet printing method based on feathering in the above embodiments, the embodiments of the present invention can be implemented by providing a computer-readable storage medium. The computer readable storage medium having stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement any of the feathering-based ink jet printing methods of the above embodiments.
The above is a detailed description of the ink jet printing method, apparatus, device and storage medium based on feathering provided by the embodiments of the present invention.
It is to be understood that the invention is not limited to the specific arrangements and instrumentality described above and shown in the drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown 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 after comprehending the spirit of the present invention.
The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
It should also be noted that the exemplary embodiments noted in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
As described above, only the specific embodiments of the present invention are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
Claims (8)
1. An ink jet printing method based on feathering, comprising the steps of:
s1: acquiring printing precision, printing mode and feathering amplitude;
s2: determining the printing ink amount of each area of the printing image formed in the single scanning printing according to the printing precision, the printing mode and the feathering amplitude;
s3: determining output power when curing each area of the printed image according to the printing ink amount of each area of the printed image, wherein different printing ink amounts correspond to different output powers;
s4: executing one scanning printing;
s5: outputting corresponding output power to each area of the printed image for solidification;
the printing precision comprises the height of a spray head, the eclosion amplitude is the eclosion height, and the eclosion height is the height of the nozzle arrangement in the eclosion area;
the S2: determining the printing ink amount of each region of the printing image formed in the single-scan printing according to the printing accuracy, the printing mode, and the feathering amplitude further includes:
s21: dividing the spray head into a first eclosion area, a non-eclosion area and a second eclosion area in turn along the height direction of the spray head according to the height of the spray head and the eclosion height;
s22: determining the ink output of each nozzle according to the nozzle area where each nozzle in the nozzle is located;
s23: determining the printing ink amount of each area of the printing image according to the ink output amount of each nozzle and the corresponding relation between each nozzle and the formed area of the printing image in single scanning printing;
at said S22: determining the ink output of each nozzle according to the nozzle area where each nozzle is located in the nozzle comprises:
s221, acquiring the ink output quantity of each nozzle of the non-feathering area as a basic ink output quantity;
s222, determining the ink output quantity of each nozzle in the first eclosion area according to the basic ink output quantity and the first ink output rule; the first ink outlet rule is that the ink outlet amount of the nozzle is gradually reduced from the position close to the non-eclosion area to the position far away from the non-eclosion area, and the maximum value of the ink outlet amount of the nozzle in the first eclosion area is less than or equal to the basic ink outlet amount;
and S223, determining the ink output amount of each nozzle in the second eclosion area according to the basic ink output amount and a second ink output rule, wherein the second ink output rule is that the ink output amount of the nozzle is gradually reduced from the position close to the non-eclosion area to the position far away from the non-eclosion area, and the maximum value of the ink output amount of the nozzle in the second eclosion area is less than or equal to the basic ink output amount.
2. The feathering-based ink jet printing method as claimed in claim 1 wherein, at S22: determining the ink output quantity of each nozzle according to the nozzle area where each nozzle in the nozzle is located, wherein the ink output quantity of each nozzle meets a first function, and the first function is;
where i is a nozzle index in the nozzle arrangement direction, eclH represents a feathering height, JetH represents a head height, and the function value of Density (i) is the ink discharge amount of the ith nozzle, where i is an integer, and eclH and JetH are positive integers.
3. The feathering-based ink jet printing method according to claim 2, wherein the independent variable of the first function is normalized and a continuous second function density (x) is obtained by fitting the first function, wherein x represents a coordinate value of a position in the nozzle arrangement direction and 0. ltoreq. x.ltoreq.1, wherein the function value of density (x) is the amount of printing ink of a print image at a position where the coordinate value is x in single scan printing.
4. The feathering-based ink jet printing method as defined in claim 3 wherein: at S3: and determining the output power when curing each area of the printed image according to the printing ink amount of each area of the printed image, wherein different printing ink amounts correspond to different output powers, and the output power when curing the printed image is in direct proportion to the printing ink amount of the printed image at the current curing position.
5. The feathering-based ink jet printing method as claimed in claim 4, wherein assuming that the maximum output power is PMax, at S3: determining output power when ink in each area of the printed image is solidified according to the printing ink amount of each area of the printed image, wherein in different output powers corresponding to different printing ink amounts, power functions of different positions of a UV lamp are as follows:
P(x)＝Density(x)*PMax
where P (x) represents the output power of the UV lamp when curing the ink at coordinate value x.
6. An ink jet printing apparatus based on feathering, comprising:
an obtaining module for obtaining printing precision, printing mode and feathering amplitude;
a printing ink amount determination module for determining the amount of printing ink of each region of a printed image formed in single-scan printing according to the printing accuracy, the printing mode, and the feathering amplitude;
the output power determining module is used for determining the output power of each area of the printed image when the printing ink amount of each area of the printed image is solidified, and different printing ink amounts correspond to different output powers;
the scanning and printing module is used for executing one-time scanning and printing;
the printing image curing module is used for curing the corresponding output power output by each area of the printing image;
the printing precision comprises the height of a spray head, the eclosion amplitude is the eclosion height, and the eclosion height is the height of the nozzle arrangement in the eclosion area;
the determining the printing ink amount of each region of the printing image formed in the single-scan printing according to the printing accuracy, the printing mode, and the feathering amplitude further includes:
dividing the spray head into a first eclosion area, a non-eclosion area and a second eclosion area in turn along the height direction of the spray head according to the height of the spray head and the eclosion height;
determining the ink output of each nozzle according to the nozzle area where each nozzle in the nozzle is located;
determining the printing ink amount of each area of the printing image according to the ink output amount of each nozzle and the corresponding relation between each nozzle and the formed area of the printing image in single scanning printing;
the determining the ink output amount of each nozzle according to the nozzle area where each nozzle in the nozzle is located comprises:
acquiring the ink discharge amount of each nozzle of the non-feathered region as a basic ink discharge amount;
determining the ink output of each nozzle in the first eclosion area according to the basic ink output and the first ink output rule; the first ink outlet rule is that the ink outlet amount of the nozzle is gradually reduced from the position close to the non-eclosion area to the position far away from the non-eclosion area, and the maximum value of the ink outlet amount of the nozzle in the first eclosion area is less than or equal to the basic ink outlet amount;
and determining the ink output of each nozzle in the second eclosion area according to the basic ink output and a second ink output rule, wherein the second ink output rule is that the ink output of the nozzle is gradually reduced from the position close to the non-eclosion area to the position far away from the non-eclosion area, and the maximum value of the ink output of the nozzle in the second eclosion area is less than or equal to the basic ink output.
7. Feathering process-based inkjet printing apparatus comprising at least one processor, at least one memory and computer program instructions stored in the memory which, when executed by the processor, implement the method of any one of claims 1 to 5.
8. A storage medium having computer program instructions stored thereon, which when executed by a processor implement the method of any one of claims 1-5.
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| CN114789604B (en) * | 2021-01-25 | 2024-02-09 | 深圳汉弘软件技术有限公司 | Printing method, device, inkjet printer and storage medium |
| CN114789605B (en) * | 2021-01-26 | 2023-07-14 | 深圳市汉森软件有限公司 | Image printing data processing method, device, equipment and storage medium |
| CN113002185B (en) * | 2021-02-08 | 2022-05-24 | 苏州斯莱克精密设备股份有限公司 | Control method for printing and drying surface of cylinder |
| CN115071286B (en) * | 2021-03-10 | 2023-08-15 | 森大（深圳）技术有限公司 | Automatic adjustment method, device and equipment for eclosion template and storage medium |
| CN115384185B (en) * | 2021-05-20 | 2023-08-15 | 深圳市汉森软件有限公司 | Spray head splicing feathering calibration method, device and equipment |
| CN115447278B (en) * | 2021-06-08 | 2023-08-15 | 深圳市汉森软件有限公司 | Printing method, device, equipment and storage medium for improving image uniformity |
| CN115447282B (en) * | 2021-06-08 | 2023-08-15 | 深圳市汉森软件有限公司 | Abnormal nozzle compensation printing method, device, equipment and storage medium |
| CN115447283B (en) * | 2021-06-08 | 2023-08-15 | 深圳市汉森软件有限公司 | Print data processing method, device, equipment and medium for improving color block uniformity |
| CN113682061B (en) * | 2021-08-24 | 2023-06-06 | 厦门汉印电子技术有限公司 | Printing control method, device, equipment and storage medium |
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| US6448346B1 (en) * | 1998-03-10 | 2002-09-10 | Canon Kabushiki Kaisha | Fluorine-containing epoxy resin composition, and surface modification process, ink jet recording head and ink jet recording apparatus making use of the same |
| CN107264075B (en) * | 2016-04-08 | 2020-11-06 | 株式会社御牧工程 | Bonding method, method for producing ink layer formed body, and ink layer formed body |
| CN107031204A (en) * | 2016-06-28 | 2017-08-11 | 南京翰骞数码科技有限公司 | A kind of solidification equipment control method |
| CN111045609B (en) * | 2018-10-13 | 2023-07-14 | 森大（深圳）技术有限公司 | Ink jet printing method, device, equipment and storage medium |
| CN109272471B (en) * | 2018-10-13 | 2021-08-27 | 深圳市汉森软件有限公司 | Printing data feathering processing method, device, equipment and storage medium |
| CN110202933B (en) * | 2019-06-20 | 2021-01-01 | 森大（深圳）技术有限公司 | Method, device, equipment and medium for adjusting ink output to compensate abnormal nozzle |
| CN110515566B (en) * | 2019-08-17 | 2020-12-29 | 深圳市汉森软件有限公司 | Industrial ink-jet printing preview method, device, equipment and storage medium |
| CN110816065B (en) * | 2019-10-18 | 2021-04-13 | 深圳市汉森软件有限公司 | Ink discharging method and device for overlapped hole area of nozzle and storage medium |
| CN110757977B (en) * | 2019-12-06 | 2021-04-16 | 东莞市图创智能制造有限公司 | Printing curing method and printing curing system |
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