CN116080288A - Inkjet printing device and inkjet printing method - Google Patents
Inkjet printing device and inkjet printing method Download PDFInfo
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- CN116080288A CN116080288A CN202310168369.2A CN202310168369A CN116080288A CN 116080288 A CN116080288 A CN 116080288A CN 202310168369 A CN202310168369 A CN 202310168369A CN 116080288 A CN116080288 A CN 116080288A
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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
- 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
- B41J2/135—Nozzles
- B41J2/145—Arrangement thereof
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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
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/54—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements
- B41J3/543—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements with multiple inkjet print heads
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Abstract
The invention relates to the field of printing, in particular to an inkjet printing device and an inkjet printing method, wherein the device comprises: the method comprises the steps that an acquisition module acquires a target jet printing width of an image to be jet printed, the target jet printing width is matched with a preset jet printing width to obtain a first area width, a second area width and a third area width corresponding to the preset jet printing width, a dividing module divides the image to be jet printed into a first area image, a second area image and a third area image, a processing module carries out gray scale identification on the image to obtain a first total gray scale value and a second total gray scale value, and whether the first total gray scale value and the second total gray scale value meet a standard or not is judged to regulate a standard ink jet amount; the control module controls the jet printing assembly to jet print the images in the first image file and the second image file on the printing medium according to the target ink jet quantity. The invention can meet the practical application requirements of high-width spray printing.
Description
Technical Field
The invention relates to the field of printing, in particular to an inkjet printing device and an inkjet printing method.
Background
The ink jet printing technology provides powerful support for variable printing, various types of spray heads appear along with the updating iteration of the technology, so that the application requirements of higher speed, more stable use and higher resolution are met, but most spray heads have the condition that the quantity of the sprayed ink is reduced when the spraying frequency is high, the whole quantity of the printed ink is lower after the printing speed is increased, and white spots or white lines are easy to appear on a printed product. In addition, the inkjet printing nozzle has size limitation, especially the size of a specific high-resolution nozzle is within 2 inches, the actual jet printing size cannot be achieved in practical application, and the nozzle needs to be connected in series in a staggered manner to enlarge the jet printing width, but when the operation with small printing width is encountered in the actual printing, the redundant size is wasted, and the large-area jet hole without jet printing can be blocked because of long-time jet printing.
Chinese patent application publication No.: the CN102180006B patent discloses an inkjet printing apparatus, which aligns two identical nozzles to discharge, one nozzle prints odd-line images, and one nozzle prints even-line images to achieve high-speed inkjet printing, which essentially reduces the number of dots of each nozzle for inkjet printing on the medium of the same size, but increases the image processing time due to the need to split the images, which is disadvantageous for ultra-high-speed printing, and two other limitations are imposed on the use of the technology: the nozzles are completely aligned and the nozzle spacing is an integer multiple of the nozzle holes, and the existing machining precision is difficult to meet the condition. Chinese patent application publication No.: the patent CN100415523C discloses a method for installing nozzles of an inkjet printer, in which a plurality of nozzles are combined in a staggered parallel or a staggered parallel and serial combination manner, so as to improve the printing speed; in the mode of combining staggered parallel connection and serial connection, the printing width and the transverse resolution of the spray head group are increased, but the spray heads which are required to be connected in parallel are staggered parallel according to the spray hole distance of 1/2 or 1/3, the requirement on the machining precision is too high, in addition, too many spray heads are required to be used, and if a group of serial connection modes are added according to the staggered parallel connection of 1/2 spray holes, the number of spray heads is 4, and the cost of the system is increased too much although the double printing width and the double physical resolution can be realized.
In the prior art, the balance between the jet printing width and the ink jet quantity cannot be achieved, and the practical application requirements of high-width jet printing cannot be met.
Disclosure of Invention
Therefore, the invention provides an inkjet printing device and an inkjet printing method, which can not adjust the inkjet printing width and the inkjet speed to adapt to the practical application requirement of high-width inkjet printing.
To achieve the above object, an aspect of the present invention provides an inkjet printing apparatus comprising:
the acquisition module is used for acquiring a target jet printing width of an image to be jet printed, and matching the target jet printing width with a preset jet printing width to obtain a first area width, a second area width and a third area width corresponding to the preset jet printing width;
the dividing module is connected with the acquisition module, divides the image to be printed into a first area image, a second area image and a third area image according to the first area width, the second area width and the third area width according to the three area widths, and processes the first area image, the second area image and the third area image into a first image file and a second image file;
the processing module is connected with the dividing module, performs jet printing data processing on the first image file and the second image file to obtain target jet ink quantity, performs gray scale recognition on images in the first image file and the second image file to obtain a first total gray scale value and a second total gray scale value, calculates the target total gray scale value according to the first total gray scale value and the second total gray scale value, judges whether the residual ink quantity meets the standard, and confirms the target jet ink quantity according to a judging result;
and the control module is connected with the processing module and used for controlling the jet printing assembly to jet print the images in the first image file and the second image file on the printing medium according to the target jet ink quantity.
Further, the spray printing component comprises a spray head mounting device, wherein the spray head mounting device is provided with a first screw rod, a sliding rail, an adjusting and mounting mechanism, a second screw rod and a fixed mounting mechanism,
the fixed mounting mechanism is fixed on the spray head mounting device;
the sliding rail is fixed on the spray head mounting device;
and the adjusting and mounting mechanism is slidably mounted on the sliding rail and connected with the first screw rod and the second screw rod, and drives the adjusting and mounting mechanism to move along the horizontal direction of the sliding rail according to the movement of the first screw rod and the second screw rod.
Further, the jet printing assembly also comprises a first jet head and a second jet head, wherein,
the first spray head is arranged on the fixed mounting mechanism and is used for spraying the image to be sprayed onto a corresponding area of the printing medium;
the second spray head is arranged on the adjusting and mounting mechanism and is used for spraying the image to be sprayed onto the corresponding area of the printing medium;
the spray printing areas of the first spray head and the second spray head comprise a first area, a second area and a third area, wherein the first area is the spray printing area of the first spray head, the second area is the common spray printing area of the first spray head and the second spray head, and the third area is the spray printing area of the second spray head.
Further, the processing module is further configured to obtain actual area widths of the first area, the second area, and the third area as a first area actual width, a second area actual width, and a third area actual width, calculate a difference Δd between an actual width of any area and a width of a corresponding area that is matched, and determine a moving direction of the adjusting installation structure according to Δd;
if Deltad is more than 0, judging that the moving direction of the adjusting and mounting structure is left;
if Δd=0, then determining that the adjustment mounting structure is not moving;
if Deltad is less than 0, judging that the moving direction of the adjusting and mounting structure is right;
the processing module sends the judging result of the moving direction of the adjusting and installing structure and the corresponding difference value delta d to the control module, and the control module controls the first screw and the second screw to move the adjusting and installing structure according to the moving direction and the difference value delta d so that the widths of the first area, the second area and the third area are respectively the same as the widths of the first area, the second area and the third area.
Further, when the first region image, the second region image and the third region image are processed into a first image file and a second image file, the dividing module converts the first region image into a first jet printing image, converts the second region image into a first gray level image and a second gray level image, and converts the third region image into a second jet printing image, wherein the first jet printing image and the first gray level image form the first image file, and the second gray level image and the second jet printing image form the second image file.
Further, when the processing module performs inkjet data processing on the first image file and the second image file to obtain a target inkjet amount, performing gray scale recognition on a first inkjet image and a first gray scale image in the first image file to obtain a first gray scale value and a second gray scale value respectively, and performing gray scale recognition on a second gray scale image and a second inkjet image in the second image file to obtain a third gray scale value and a fourth gray scale value respectively;
and the control module controls the first spray head to spray the first image file onto the printing medium when controlling the spray printing component to spray the image to be sprayed onto the printing medium according to the target ink jet quantity, and controls the second spray head to spray the second image file onto the printing medium after the first spray head finishes spraying the first image file, so as to finish spraying the image to be sprayed.
Further, the control module controls a plurality of spray holes positioned in a first area on the first spray head to spray the first spray printing image onto the printing medium according to the first gray value, controls a plurality of spray holes positioned in a second area on the first spray head to spray the first gray image onto the printing medium according to the second gray value, and controls a plurality of spray holes positioned in a second area on the second spray head to spray the second gray image onto the first gray image on the printing medium according to the third gray value after the spray printing of the first spray holes is completed, and simultaneously controls a plurality of spray holes positioned in a third area on the second spray head to spray the second spray printing image onto the printing medium according to the fourth gray value.
Further, the processing module calculates a target total gray value C0 according to the first total gray value C1 and the second total gray value C2, and judges whether the residual ink quantity m0 meets the standard, wherein the target total gray value c0=the first total gray value c1+the second total gray value C2, the target ink jet quantity m1 is matched according to the target total gray value C0, and the detected residual ink quantity m0 is compared with the target ink jet quantity;
if the target ink jet quantity m1 is more than or equal to the residual ink quantity m0, judging that the residual ink quantity m0 meets the standard;
if the target ink jet quantity m1 is less than the residual ink quantity m0, judging that the residual ink quantity m0 does not accord with the standard;
if the residual ink quantity m0 is judged to be not in accordance with the standard, calculating an ink jet difference value delta m, wherein the ink jet difference value delta m=a target ink jet quantity m 1-the residual ink quantity m0, generating an adding instruction by the processing module to add ink, and controlling the first spray head and the second spray head to spray the first spray image and the second spray image on a printing medium according to the target ink jet quantity m1 after the control module finishes adding the ink according to the adding instruction by the ink jet difference value delta m;
and if the residual ink quantity m0 meets the standard, the control module controls the first nozzle and the second nozzle to jet and print the first jet printing image and the second jet printing image on a printing medium according to the target jet ink quantity m 1.
In another aspect, the present invention also provides a method of inkjet printing, the method comprising:
obtaining a target jet printing width of an image to be jet printed, and matching the target jet printing width with a preset jet printing width to obtain a first area width, a second area width and a third area width corresponding to the preset jet printing width;
dividing the image to be jet printed into a first area image, a second area image and a third area image according to the first area width, the second area width and the third area width according to the three area widths, and processing the first area image, the second area image and the third area image into a first image file and a second image file;
performing jet printing data processing on the first image file and the second image file to obtain target ink jet quantity, performing gray scale recognition on images in the first image file and the second image file to obtain a first total gray scale value and a second total gray scale value, calculating the target total gray scale value according to the first total gray scale value and the second total gray scale value, judging whether the residual ink quantity meets the standard, and confirming the target ink jet quantity according to a judging result;
and controlling a jet printing assembly to jet print the images in the first image file and the second image file on a printing medium according to the target jet ink amount.
Further, acquiring actual area widths of the first area, the second area and the third area, which are respectively the actual width of the first area, the actual width of the second area and the actual width of the third area, calculating a difference Deltad between the actual width of any area and the width of the matched corresponding area, and judging and adjusting the moving direction of the mounting structure according to the Deltad;
if Deltad is more than 0, judging that the moving direction of the adjusting and mounting structure is left;
if Δd=0, then determining that the adjustment mounting structure is not moving;
if Deltad is less than 0, judging that the moving direction of the adjusting and mounting structure is right;
and sending a judging result of the moving direction of the adjusting and mounting structure and a corresponding difference value delta d to the control module, and controlling the first screw and the second screw to move the adjusting and mounting structure according to the moving direction and the difference value delta d so that the widths of the first area, the second area and the third area are respectively the same as the widths of the first area, the second area and the third area.
Compared with the prior art, the method has the beneficial effects that the acquisition module is used for matching the target jet printing width with the preset jet printing width to obtain the first region width, the second region width and the third region width corresponding to the preset jet printing width, the dividing module is used for dividing the image to be jet printed into three region images according to the region widths, the processing module is used for performing jet printing data processing on the first image file and the second image file to obtain the target jet printing amount, the first total gray value and the second total gray value are obtained through gray identification, the target ink amount is obtained, whether the residual ink amount meets the standard is judged according to the target jet printing amount, the control module is used for timely supplementing ink according to the condition that the standard is not met, finally, the control module is used for controlling the jet printing assembly to finish the jet printing of the image according to the target jet printing amount, the actual application requirement of the high-width jet printing can be adapted, and the jet printing quality is improved.
In particular, the first spray head is installed on the fixed installation mechanism, the adjusting installation mechanism is slidably installed on the sliding rail and connected with the first screw rod and the second screw rod, and the adjusting installation mechanism is driven to move along the horizontal direction of the sliding rail according to the movement of the first screw rod and the second screw rod, so that the width of the spray printing area is adjusted, and the practical application requirement of high-width spray printing can be met.
In particular, the actual area widths of the first area, the second area and the third area are respectively the actual width of the first area, the actual width of the second area and the actual width of the third area, the difference delta d between the actual width of any area and the matched width of the corresponding area is calculated, the moving direction of the adjusting installation structure is judged according to delta d, the image widths of the three areas are obtained according to the target jet printing width, the moving direction and the moving distance of the adjusting installation structure are further accurately judged, the moving direction of the adjusting installation structure is controlled through intelligent analysis, the widths of the three areas are conveniently regulated and controlled, and the method can adapt to the actual application requirements of high-width jet printing.
In particular, the image to be printed is divided into three area images, and the second area image is converted into two gray level images with different gray level values, so that the first spray head and the second spray head respectively carry out the spray printing of the images of the two parts, and the second area spray printing image is subjected to the spray printing twice by the first spray head and the second spray head, thereby improving the spray printing quality of the image, and the three area spray printing can be suitable for the practical application requirements of high-width spray printing.
In particular, the processing module judges whether the residual ink quantity accords with the standard according to the first total gray value C1 and the second total gray value C2, so that the control module can timely supplement ink when the residual ink quantity does not accord with the standard, and further control the first nozzle and the second nozzle to carry out jet printing according to the target ink jet quantity, the jet printing quality is improved, and the actual application requirements of high-width jet printing can be met.
Drawings
Fig. 1 is a schematic structural diagram of an inkjet printing apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a printing assembly according to an embodiment of the present invention;
FIG. 3 is a schematic view of a region of an inkjet printing apparatus according to an embodiment of the present invention;
FIG. 4 is a dividing chart of an image to be printed according to an embodiment of the present invention;
FIG. 5 is a schematic gray scale of a jet printing image according to an embodiment of the present invention;
fig. 6 is a schematic flow chart of an inkjet printing method according to an embodiment of the present invention.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1 and 4, an inkjet printing apparatus according to an embodiment of the present invention includes:
the obtaining module 110 is configured to obtain a target jet printing width of an image to be jet printed, and match the target jet printing width with a preset jet printing width to obtain a first area width, a second area width and a third area width corresponding to the preset jet printing width;
a dividing module 120, connected to the acquiring module, for dividing the image 13 to be printed into a first area image 18, a second area image 19 and a third area image 20 according to the first area width, the second area width and the third area width according to the three area widths, and processing the first area image, the second area image and the third area image into a first image file 11 and a second image file 12;
the processing module 130 is connected with the dividing module, performs inkjet printing data processing on the first image file and the second image file to obtain a target inkjet amount, performs gray scale recognition on images in the first image file and the second image file to obtain a first total gray scale value and a second total gray scale value, calculates the target total gray scale value according to the first total gray scale value and the second total gray scale value, judges whether the residual ink amount meets a standard, and confirms the target inkjet amount according to a judgment result;
the control module 140 is configured to control the inkjet printing assembly 150 to inkjet print the images in the first image file and the second image file onto the printing medium according to the target inkjet amount.
Specifically, the embodiment of the invention obtains the first region width, the second region width and the third region width corresponding to the preset jet printing width by matching the target jet printing width with the preset jet printing width through the obtaining module, the dividing module divides the image to be jet printed into three region images according to the region widths, the processing module carries out jet printing data processing on the first image file and the second image file to obtain target jet printing quantity, the first total gray value and the second total gray value are obtained through gray identification, the target jet printing quantity is obtained, whether the residual ink quantity meets the standard is judged according to the target jet printing quantity, the control module timely supplements ink according to the target jet printing quantity and the target jet printing quantity, the jet printing of the image is completed by the control module according to the target jet printing quantity and the target jet printing quantity, the actual application requirement of high-width jet printing can be adapted, and the jet printing quality is improved.
Referring to fig. 2, the spray printing assembly includes a spray head mounting device 151 provided with a first screw 154, a slide rail 155, an adjustment mounting mechanism 156, a second screw 157 and a fixed mounting mechanism 158, wherein,
the fixed mounting mechanism is fixed on the spray head mounting device;
the sliding rail is fixed on the spray head mounting device;
and the adjusting and mounting mechanism is slidably mounted on the sliding rail and connected with the first screw rod and the second screw rod, and drives the adjusting and mounting mechanism to move along the horizontal direction of the sliding rail according to the movement of the first screw rod and the second screw rod.
Specifically, in the embodiment of the invention, the first spray head is arranged on the fixed mounting mechanism, the adjusting and mounting mechanism is slidably arranged on the sliding rail and is connected with the first screw rod and the second screw rod, and the adjusting and mounting mechanism is driven to move along the horizontal direction of the sliding rail according to the movement of the first screw rod and the second screw rod, so that the width of the spray printing area is adjusted, and the practical application requirement of high-width spray printing can be met.
Referring to fig. 2-3, the jet printing assembly further includes a first jet 152 and a second jet 153, wherein,
the first spray head is arranged on the fixed mounting mechanism and is used for spraying the image to be sprayed onto a corresponding area of the printing medium;
the second spray head is arranged on the adjusting and mounting mechanism and is used for spraying the image to be sprayed onto the corresponding area of the printing medium;
the spray printing areas of the first spray head and the second spray head comprise a first area, a second area and a third area, wherein the first area is the spray printing area of the first spray head, the second area is the common spray printing area of the first spray head and the second spray head, and the third area is the spray printing area of the second spray head.
Specifically, the embodiment of the invention is respectively responsible for the image jet printing of three areas through the first nozzle and the second nozzle, the area width of each area is different, the jet printing of the image is realized through the first nozzle and the second nozzle, and the invention can adapt to the practical application requirement of high-width jet printing.
Specifically, the processing module is further configured to obtain actual area widths of the first area, the second area, and the third area as a first area actual width, a second area actual width, and a third area actual width, calculate a difference Δd between an actual width of any area and a width of a corresponding area that is matched, and determine a moving direction of the adjusting installation structure according to Δd;
if Deltad is more than 0, judging that the moving direction of the adjusting and mounting structure is left;
if Δd=0, then determining that the adjustment mounting structure is not moving;
if Deltad is less than 0, judging that the moving direction of the adjusting and mounting structure is right;
the processing module sends the judging result of the moving direction of the adjusting and installing structure and the corresponding difference value delta d to the control module, and the control module controls the first screw and the second screw to move the adjusting and installing structure according to the moving direction and the difference value delta d so that the widths of the first area, the second area and the third area are respectively the same as the widths of the first area, the second area and the third area.
Specifically, the difference between the actual width of any area and the width of the matched corresponding area is calculated, and the moving adjustment installation mechanism is realized through the adjusting screw, so that the actual widths of the first area, the second area and the third area are adjusted together, the difference between the actual width corresponding to the three areas and the matched width is the same, therefore, only the difference between the actual width corresponding to one area and the matched width is calculated, and the calculated amount is reduced.
Specifically, the actual area widths of the first area, the second area and the third area are respectively the actual width of the first area, the actual width of the second area and the actual width of the third area, the difference delta d between the actual width of any area and the width of the matched corresponding area is calculated, the moving direction of the adjusting installation structure is judged according to delta d, the image widths of the three areas are obtained according to the target jet printing width, the moving direction and the moving distance of the adjusting installation structure are further accurately judged, the moving direction of the adjusting installation structure is controlled through intelligent analysis, the widths of the three areas are conveniently regulated, and the method can adapt to the actual application requirements of high-width jet printing.
Referring to fig. 4, when the dividing module processes the first area image, the second area image and the third area image into a first image file and a second image file, the dividing module converts the first area image into a first jet printing image 14, converts the second area image into a first gray scale image 15 and a second gray scale image 16, and converts the third area image into a second jet printing image 17, wherein the first jet printing image and the first gray scale image form the first image file, and the second gray scale image and the second jet printing image form the second image file.
Specifically, the first gray scale image, the second gray scale image and the second area image are the same except for the gray scale, the gray scale addition of the first gray scale image and the second gray scale image is the same as that of the second area image, the gray scale can be different in coverage rate or different in ink dot ink amount, for example, in fig. 5, the first image 21 is a full-color 100% gray scale color block, the second image 22 and the third image 23 are 30% gray scale color blocks, the second image is realized by changing the coverage rate, and the third image is realized by changing the ink dot ink amount.
Specifically, in the embodiment of the invention, the image to be printed is divided into three area images, and the second area image is converted into two gray level images with different gray level values, so that the first spray head and the second spray head respectively carry out the spray printing of the two parts of images, and the second area spray printing image is subjected to the spray printing twice by the first spray head and the second spray head, thereby improving the spray printing quality of the image, and the three area spray printing can adapt to the practical application requirements of high-width spray printing.
Specifically, when the processing module performs inkjet data processing on the first image file and the second image file to obtain a target inkjet amount, performing gray scale recognition on a first inkjet image and a first gray scale image in the first image file to obtain a first gray scale value and a second gray scale value respectively, and performing gray scale recognition on a second gray scale image and a second inkjet image in the second image file to obtain a third gray scale value and a fourth gray scale value respectively;
the control module controls the first nozzle to spray the first image file onto the printing medium when controlling the spray printing component to spray the image to be sprayed onto the printing medium according to the target ink jet quantity, controls the second nozzle to spray the second image file onto the printing medium after the first nozzle finishes spraying the first image file to finish spraying the image to be sprayed,
the control module controls a plurality of spray holes positioned in a first area on the first spray head to spray the first spray printing image onto a printing medium according to the first gray value, controls a plurality of spray holes positioned in a second area on the first spray head to spray the first gray image onto the printing medium according to the second gray value, and controls a plurality of spray holes positioned in a second area on the second spray head to spray the second gray image onto a first gray image on the printing medium according to the third gray value after the spray printing of the first spray holes is completed, and controls a plurality of spray holes positioned in a third area on the second spray head to spray the second spray printing image onto the printing medium according to the fourth gray value.
Specifically, after the control module controls the first nozzle to spray the first image file onto the printing medium, a moving roller (not shown in the figure) is arranged on the spray printing assembly, and the moving roller is positioned below the first nozzle and the second nozzle to move the printing medium, so that the sprayed first image file of the printing medium reaches the spray printing position of the second nozzle, and after the first nozzle finishes the image spray printing of the first image file, the second gray level image coincides with the second area of the spray printing of the second nozzle.
Specifically, in the embodiment of the invention, the first gray value and the second gray value are respectively obtained by carrying out gray identification on the first jet printing image and the first gray image in the first image file, and the third gray value and the fourth gray value are respectively obtained by carrying out gray identification on the second gray image and the second jet printing image in the second image file, so that the control module respectively controls the first nozzle and the second nozzle to carry out jet printing according to the gray values, and the jet printing quality of the jet printing image is improved.
Specifically, the processing module calculates a target total gray value C0 according to the first total gray value C1 and the second total gray value C2, and judges whether the residual ink quantity m0 meets a standard, wherein the target total gray value c0=the first total gray value c1+the second total gray value C2, matches the target ink jet quantity m1 according to the target total gray value C0, and compares the detected residual ink quantity m0 with the target ink jet quantity;
if the target ink jet quantity m1 is more than or equal to the residual ink quantity m0, judging that the residual ink quantity m0 meets the standard;
if the target ink jet quantity m1 is less than the residual ink quantity m0, judging that the residual ink quantity m0 does not accord with the standard;
if the residual ink quantity m0 is judged to be not in accordance with the standard, calculating an ink jet difference value delta m, wherein the ink jet difference value delta m=a target ink jet quantity m 1-the residual ink quantity m0, generating an adding instruction by the processing module to add ink, and controlling the first spray head and the second spray head to spray the first spray image and the second spray image on a printing medium according to the target ink jet quantity m1 after the control module finishes adding the ink according to the adding instruction by the ink jet difference value delta m;
and if the residual ink quantity m0 meets the standard, the control module controls the first nozzle and the second nozzle to jet and print the first jet printing image and the second jet printing image on a printing medium according to the target jet ink quantity m 1.
Specifically, the processing module generates an adding instruction and sends the adding instruction to the control module, and the control module controls the ink adding component (not shown in the figure) to add.
Specifically, the embodiment of the invention judges whether the residual ink quantity meets the standard or not according to the first total gray value C1 and the second total gray value C2 through the processing module, so that the control module supplements the ink in time according to the condition that the residual ink quantity does not meet the standard, and further controls the first nozzle and the second nozzle to carry out jet printing according to the target ink jet quantity, the jet printing quality is improved, and the actual application requirement of high-width jet printing can be met.
Referring to fig. 6, an inkjet printing method according to an embodiment of the present invention includes:
step S210, obtaining a target jet printing width of an image to be jet printed, and matching the target jet printing width with a preset jet printing width to obtain a first area width, a second area width and a third area width corresponding to the preset jet printing width;
step S220, dividing the image to be printed into a first area image, a second area image and a third area image according to the first area width, the second area width and the third area width according to the three area widths, and processing the first area image, the second area image and the third area image into a first image file and a second image file;
step S230, performing jet printing data processing on the first image file and the second image file to obtain a target jet ink amount, performing gray scale recognition on images in the first image file and the second image file to obtain a first total gray scale value and a second total gray scale value, calculating the target total gray scale value according to the first total gray scale value and the second total gray scale value, judging whether the residual ink amount meets the standard, and confirming the target jet ink amount according to the judging result;
and step S240, controlling a jet printing assembly to jet print the images in the first image file and the second image file on a printing medium according to the target jet ink amount.
Specifically, the actual area widths of the first area, the second area and the third area are respectively the actual width of the first area, the actual width of the second area and the actual width of the third area, the difference delta d between the actual width of any area and the width of the matched corresponding area is calculated, and the moving direction of the mounting structure is judged and regulated according to the delta d;
if Deltad is more than 0, judging that the moving direction of the adjusting and mounting structure is left;
if Δd=0, then determining that the adjustment mounting structure is not moving;
if Deltad is less than 0, judging that the moving direction of the adjusting and mounting structure is right;
and sending a judging result of the moving direction of the adjusting and mounting structure and a corresponding difference value delta d to the control module, and controlling the first screw and the second screw to move the adjusting and mounting structure according to the moving direction and the difference value delta d so that the widths of the first area, the second area and the third area are respectively the same as the widths of the first area, the second area and the third area.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An inkjet printing apparatus, comprising:
the acquisition module is used for acquiring a target jet printing width of an image to be jet printed, and matching the target jet printing width with a preset jet printing width to obtain a first area width, a second area width and a third area width corresponding to the preset jet printing width;
the dividing module is connected with the acquisition module, divides the image to be printed into a first area image, a second area image and a third area image according to the first area width, the second area width and the third area width according to the three area widths, and processes the first area image, the second area image and the third area image into a first image file and a second image file;
the processing module is connected with the dividing module, performs jet printing data processing on the first image file and the second image file to obtain target jet ink quantity, performs gray scale recognition on images in the first image file and the second image file to obtain a first total gray scale value and a second total gray scale value, calculates the target total gray scale value according to the first total gray scale value and the second total gray scale value, judges whether the residual ink quantity meets the standard, and confirms the target jet ink quantity according to a judging result;
and the control module is connected with the processing module and used for controlling the jet printing assembly to jet print the images in the first image file and the second image file on the printing medium according to the target jet printing amount.
2. The inkjet printing apparatus of claim 1 wherein the inkjet printing assembly comprises a nozzle mounting device having a first screw, a slide rail, an adjustment mounting mechanism, a second screw, and a fixed mounting mechanism disposed thereon, wherein,
the fixed mounting mechanism is fixed on the spray head mounting device;
the sliding rail is fixed on the spray head mounting device;
and the adjusting and mounting mechanism is slidably mounted on the sliding rail and connected with the first screw rod and the second screw rod, and drives the adjusting and mounting mechanism to move along the horizontal direction of the sliding rail according to the movement of the first screw rod and the second screw rod.
3. The inkjet printing apparatus of claim 2 wherein the inkjet printing assembly further comprises a first nozzle head and a second nozzle head, wherein,
the first spray head is arranged on the fixed mounting mechanism and is used for spraying the image to be sprayed onto a corresponding area of the printing medium;
the second spray head is arranged on the adjusting and mounting mechanism and is used for spraying the image to be sprayed onto the corresponding area of the printing medium;
the spray printing areas of the first spray head and the second spray head comprise a first area, a second area and a third area, wherein the first area is the spray printing area of the first spray head, the second area is the common spray printing area of the first spray head and the second spray head, and the third area is the spray printing area of the second spray head.
4. The inkjet printing apparatus according to claim 3 wherein the processing module is further configured to obtain actual area widths of the first area, the second area, and the third area as a first area actual width, a second area actual width, and a third area actual width, respectively, calculate a difference Δd between an actual width of any area and a width of a corresponding area to be matched, and determine a moving direction of the adjustment mounting structure according to Δd;
if Deltad is more than 0, judging that the moving direction of the adjusting and mounting structure is left;
if Δd=0, then determining that the adjustment mounting structure is not moving;
if Deltad is less than 0, judging that the moving direction of the adjusting and mounting structure is right;
the processing module sends the judging result of the moving direction of the adjusting and installing structure and the corresponding difference value delta d to the control module, and the control module controls the first screw and the second screw to move the adjusting and installing structure according to the moving direction and the difference value delta d so that the widths of the first area, the second area and the third area are respectively the same as the widths of the first area, the second area and the third area.
5. The inkjet printing device of claim 4 wherein the dividing module, when processing the first, second, and third region images into first and second image files, converts the first region image into a first jet print image, converts the second region image into a first and second grayscale image, and converts the third region image into a second jet print image, wherein the first and first grayscale images comprise the first image file and the second and second grayscale images comprise the second image file.
6. The inkjet printing device of claim 5, wherein the processing module performs gray scale recognition on a first inkjet image and a first gray scale image in the first image file to obtain a first gray scale value and a second gray scale value, respectively, and performs gray scale recognition on a second gray scale image and a second inkjet image in the second image file to obtain a third gray scale value and a fourth gray scale value, respectively, when performing inkjet data processing on the first image file and the second image file to obtain a target inkjet amount;
and the control module controls the first spray head to spray the first image file onto the printing medium when controlling the spray printing component to spray the image to be sprayed onto the printing medium according to the target ink jet quantity, and controls the second spray head to spray the second image file onto the printing medium after the first spray head finishes spraying the first image file, so as to finish spraying the image to be sprayed.
7. The inkjet printing apparatus of claim 6 wherein the control module controls the plurality of orifices in the first region on the first nozzle to spray the first grayscale image onto the print medium according to the first grayscale value, controls the plurality of orifices in the second region on the first nozzle to spray the first grayscale image onto the print medium according to the second grayscale value, and controls the plurality of orifices in the second region on the second nozzle to spray the second grayscale image onto the first grayscale image on the print medium according to the third grayscale value after the first nozzle finishes spraying, and controls the plurality of orifices in the third region on the second nozzle to spray the second grayscale image onto the print medium according to the fourth grayscale value.
8. The inkjet printing apparatus according to claim 7 wherein the processing module calculates a target total gray value C0 from the first total gray value C1 and the second total gray value C2 and determines whether the remaining ink amount m0 meets a criterion, wherein the target total gray value c0 = first total gray value c1+second total gray value C2 matches the target ink amount m1 from the target total gray value C0, and compares the detected remaining ink amount m0 with the target ink amount;
if the target ink jet quantity m1 is more than or equal to the residual ink quantity m0, judging that the residual ink quantity m0 meets the standard;
if the target ink jet quantity m1 is less than the residual ink quantity m0, judging that the residual ink quantity m0 does not accord with the standard;
if the residual ink quantity m0 is judged to be not in accordance with the standard, calculating an ink jet difference value delta m, wherein the ink jet difference value delta m=a target ink jet quantity m 1-the residual ink quantity m0, generating an adding instruction by the processing module to add ink, and controlling the first spray head and the second spray head to spray the first spray image and the second spray image on a printing medium according to the target ink jet quantity m1 after the control module finishes adding the ink according to the adding instruction by the ink jet difference value delta m;
and if the residual ink quantity m0 meets the standard, the control module controls the first nozzle and the second nozzle to jet and print the first jet printing image and the second jet printing image on a printing medium according to the target jet ink quantity m 1.
9. An inkjet printing method using the inkjet printing apparatus according to any one of claims 1 to 8, characterized by comprising:
obtaining a target jet printing width of an image to be jet printed, and matching the target jet printing width with a preset jet printing width to obtain a first area width, a second area width and a third area width corresponding to the preset jet printing width;
dividing the image to be jet printed into a first area image, a second area image and a third area image according to the first area width, the second area width and the third area width according to the three area widths, and processing the first area image, the second area image and the third area image into a first image file and a second image file;
performing jet printing data processing on the first image file and the second image file to obtain target ink jet quantity, performing gray scale recognition on images in the first image file and the second image file to obtain a first total gray scale value and a second total gray scale value, calculating the target total gray scale value according to the first total gray scale value and the second total gray scale value, judging whether the residual ink quantity meets the standard, and confirming the target ink jet quantity according to a judging result;
and controlling a jet printing assembly to jet print the images in the first image file and the second image file on a printing medium according to the target jet ink amount.
10. The inkjet printing method according to claim 9 wherein the actual area widths of the first area, the second area, and the third area are obtained as the first area actual width, the second area actual width, and the third area actual width, respectively, a difference Δd between the actual width of any area and the width of the corresponding area that is matched is calculated, and the moving direction of the mounting structure is adjusted according to Δd;
if Deltad is more than 0, judging that the moving direction of the adjusting and mounting structure is left;
if Δd=0, then determining that the adjustment mounting structure is not moving;
if Deltad is less than 0, judging that the moving direction of the adjusting and mounting structure is right;
and sending a judging result of the moving direction of the adjusting and mounting structure and a corresponding difference value delta d to the control module, and controlling the first screw and the second screw to move the adjusting and mounting structure according to the moving direction and the difference value delta d so that the widths of the first area, the second area and the third area are respectively the same as the widths of the first area, the second area and the third area.
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| CN114889346A (en) * | 2022-04-25 | 2022-08-12 | 深圳市汉拓数码有限公司 | Jet printing control method, controller and digital printer |
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| US20100118079A1 (en) * | 2007-04-03 | 2010-05-13 | Canon Kabushiki Kaisha | Ink jet recording method and ink jet recording device |
| CN113696651A (en) * | 2020-05-23 | 2021-11-26 | 森大（深圳）技术有限公司 | Inkjet printing method, device and equipment based on splicing channel and storage medium |
| CN113320299A (en) * | 2021-06-30 | 2021-08-31 | 东莞市图创智能制造有限公司 | Single-Pass printing device, control method and printing equipment |
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