WO2019141181A1 - 喷墨打印机喷嘴异常补偿方法、装置及喷墨打印机 - Google Patents
喷墨打印机喷嘴异常补偿方法、装置及喷墨打印机 Download PDFInfo
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- WO2019141181A1 WO2019141181A1 PCT/CN2019/071923 CN2019071923W WO2019141181A1 WO 2019141181 A1 WO2019141181 A1 WO 2019141181A1 CN 2019071923 W CN2019071923 W CN 2019071923W WO 2019141181 A1 WO2019141181 A1 WO 2019141181A1
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- 238000000034 method Methods 0.000 title claims abstract description 95
- 230000005856 abnormality Effects 0.000 title claims abstract description 62
- 238000007639 printing Methods 0.000 claims abstract description 364
- 230000002159 abnormal effect Effects 0.000 claims abstract description 306
- 239000007921 spray Substances 0.000 claims abstract description 10
- 239000011159 matrix material Substances 0.000 claims description 108
- 238000013507 mapping Methods 0.000 claims description 70
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- 238000001514 detection method Methods 0.000 claims description 18
- 238000012545 processing Methods 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 230000033001 locomotion Effects 0.000 claims description 4
- 239000000976 ink Substances 0.000 description 76
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 5
- 238000007641 inkjet printing Methods 0.000 description 5
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/21—Ink jet for multi-colour printing
- B41J2/2132—Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding
- B41J2/2139—Compensation for malfunctioning nozzles creating dot place or dot size errors
-
- 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
- B41J2/07—Ink jet characterised by jet control
- B41J2/12—Ink jet characterised by jet control testing or correcting charge or deflection
-
- 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
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/0451—Control methods or devices therefor, e.g. driver circuits, control circuits for detecting failure, e.g. clogging, malfunctioning actuator
-
- 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
- B41J2/07—Ink jet characterised by jet control
-
- 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
- B41J2/07—Ink jet characterised by jet control
- B41J2/125—Sensors, e.g. deflection sensors
-
- 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
- B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
-
- 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
Definitions
- the present invention relates to the field of inkjet printing technology, and in particular, to an inkjet printer nozzle abnormality compensation method and device, and an inkjet printer.
- Inkjet printing refers to spraying ink droplets onto a printing medium through nozzles on the nozzle to obtain images or text, mainly including reciprocating scanning printing, one-time scanning printing, multi-head side by side scanning printing, etc.
- Reciprocating scanning printing is also called Multi-pass scan printing
- multi-pass scan printing means that each unit of the image to be printed must be interpolated multiple times to complete the printing.
- Each unit is composed of multiple pixels. For example, 2pass scanning prints each unit by 2 3 pixels scan printing, each unit consists of 3 pixels; one-time scanning printing is also called single pass scanning printing, single pass scanning printing means that each unit of the image to be printed only needs one scan. Printing is completed; multi-nozzle side-by-side scanning is also called onepass scanning, and onepass scanning means that the image to be printed is printed once.
- Figure 1 is a schematic diagram of 4pass scan printing.
- a certain area A (or a piece of image) of the image to be printed needs 4 times to complete the printing.
- the area A consists of several units B, and each unit B consists of 4
- the data of the area A is divided into four parts: a data block A1, a data block A2, a data block A3 and a data block A4, respectively, and four data blocks are respectively printed by different nozzles of the nozzle, and the moving direction of the printing medium is as shown in the figure.
- L1 of 1 the moving direction of the head is as shown by Z1 in FIG.
- the data block A1 of the area A is printed by the J1 portion of the head; the moving distance of the printing medium at the first pass is equal to the length of the J1 portion of the head in the L direction; when the head is at the second pass, the area is The data block A2 of A is printed by the J2 portion of the head; the print medium is moved again and the length of the portion of the head J2 is equal, and when the head is at the 3th pass, the data block A3 of the area A is printed by the J3 portion of the head; the printing medium Then move the distance equal to the length of the J3 portion of the nozzle.
- the data block A4 of the area A is printed by the J4 portion of the nozzle.
- the area A corresponding to the image to be printed is covered four times by different parts of the head, and the image corresponding to the area A is printed.
- the printing method after the inkjet printer nozzle works for a long time, due to ink path contamination, ink precipitation, dust, water vapor, etc., the nozzle nozzle state is abnormal, such as blockage. , oblique spray, imaginary, insufficient ink, etc., resulting in problems such as pull lines, blanks, etc. of the printed image, seriously affecting the quality of the product.
- the prior art cleans the nozzle by washing, pressing, and wiping, but during the cleaning process, some of the plugging holes may not be cleaned, and only a few nozzles may be abnormal. Reluctant to produce, but still need to replace the nozzle for products requiring high quality accuracy; if the number of nozzle abnormalities exceeds 10% of the total number of nozzles, the nozzle must be replaced; when only due to a small number of nozzle abnormalities The entire nozzle should be replaced, which not only affects the production schedule, but also easily replaces the nozzle and greatly increases the cost of production.
- the embodiment of the invention provides an inkjet printer nozzle abnormality compensation method, device and inkjet printer for solving the problem that the nozzle of the inkjet printer nozzle abnormality affects the quality of the printed image in the prior art.
- an embodiment of the present invention provides an inkjet printer nozzle anomaly compensation method, the method comprising:
- Obtaining a printing parameter determining first data corresponding to the abnormal nozzle, determining, according to the abnormal nozzle position information and the printing parameter, compensation nozzle position information corresponding to the first data of the nozzle that compensates the abnormal nozzle;
- the second data corresponding to the compensation nozzle when the normal printing is performed, the second data includes the ink discharging data and the non-inking data, and determining the address of the non-inking data in the second data. And generating the compensation data by correspondingly writing the first data to the address of the non-inking data.
- the printing parameters include: a relative displacement of the printing medium and the head, a number of nozzles, and a number of first reciprocating scanning prints.
- the method comprises: defining the number of times of the first reciprocating scanning printing as R, R being an integer greater than or equal to 2, the nozzle corresponding to the R group nozzle, and the v group nozzle of the R group nozzle
- R being an integer greater than or equal to 2
- the nozzle corresponding to the R group nozzle and the v group nozzle of the R group nozzle
- a nozzle corresponding to the abnormal nozzle position is selected from the remaining R-1 group nozzles of the R group nozzle as an alternative compensation nozzle, and compensation is selected from the candidate compensation nozzles.
- the nozzle compensates for the abnormal nozzle, each abnormal nozzle corresponding to at least one compensation nozzle, wherein v is an integer greater than or equal to 1.
- the acquiring the printing parameter, determining the first data corresponding to the abnormal nozzle, determining, according to the position information and the printing parameter, a compensation nozzle position corresponding to the first data of the nozzle that compensates the abnormal nozzle Information including:
- the number of times of the first reciprocal scanning printing is P, P is an integer greater than or equal to 2, that is, each image is printed by P times of coverage, the current printing index is recorded as X, and the X refers to printing from the whole Starting counting to the number of times that the current has been printed, calculating whether all the abnormal nozzles fall within the P-th printing range from the current printing, and recording one of the abnormal nozzles as the first nozzle, the Xth
- the secondary print start position is equal to the relative displacement between the first X print media and the print head, denoted as S x ; the new coverage distance of the Xth print on the print medium, denoted as h x , and the height of the print head is recorded as H, the new coverage of the Xth printing is recorded as [S x + Hh x , S x + H], and the first nozzle is in a direction in which the relative displacement of the nozzle and the printing medium increases.
- the distance between the first nozzles is W, and the corresponding starting positions in the X+0th, X+1th, ..., X+P-1th printing are: S x , respectively.
- S x + 1, ..., S X + P-1 each time a new print coverage for: [S x + Hh x, S x + H] , the first The printing position of the mouth, respectively: S x + W, S x + 1 + W, ..., S X + P-1 + W, if the first nozzle in the printing position on the printing medium is located in the corresponding If the new coverage is added, the first mapping relationship is not stored.
- a mapping relationship includes a corresponding print index, the first nozzle is at a corresponding print position on the print medium, and the first data of the first nozzle is taken out.
- the stored first mapping relationship is searched one by one, and the abnormal nozzle corresponding to one of the mapping relationships is recorded as a second nozzle, and the second nozzle is taken out from the first mapping relationship on the printing medium.
- a printing position if the printing position is greater than or equal to a starting position of the current printing, the first mapping relationship is valid, and the printing position of the second nozzle minus the value of the starting position of the current printing is recorded as Z x If the Z x is smaller than the height H of the nozzle, the first data corresponding to the second nozzle can be compensated.
- a nozzle corresponding to the Z x position as a compensation nozzle of the second nozzle, denoted as a third nozzle, and writes the first data of the second nozzle to the non-inking data address of the second data corresponding to the third nozzle Obtaining the compensation data of the third nozzle, and simultaneously clearing corresponding compensated data corresponding to the second nozzle that has been written into the third nozzle in the memory;
- the third data, the fourth data, the Kth data, corresponding to the second nozzle may be continuously obtained until the The data compensation of the second nozzle is written or the first mapping relationship corresponding to the second nozzle is out of date, the third data is the remaining data to be compensated after the second data is compensated, and the fourth data is the The third data is compensated for the remaining data to be compensated, and the Kth data is the remaining data to be compensated after the K-1 data is compensated, wherein 4 ⁇ K ⁇ P, and K is an integer.
- the method further includes:
- the second print data includes the first data and the second data.
- the printing parameter further includes a first feathering amplitude
- the obtaining the printing parameter, and performing the feathering processing on the first print data corresponding to the printing parameter to obtain the second print data comprises:
- the acquiring the printing parameter, determining the first data corresponding to the abnormal nozzle, determining, according to the abnormal nozzle position information and the printing parameter, a compensation corresponding to the first data of the nozzle for compensating the abnormal nozzle Nozzle position information including:
- the current print contains the abnormal nozzle, it is recorded as the first abnormal nozzle
- the second mapping relationship is not stored
- the address of the non-inking data is correspondingly written to the address of the non-inking data to generate compensation data, including:
- the second abnormal nozzle is recorded, and the printing position information corresponding to the second abnormal nozzle on the printing medium is obtained according to the second mapping relationship, and the printing range covering the current printing medium is calculated. Compensating the compensation nozzle, and writing the print data of the second abnormal nozzle backed up in the second mapping relationship to the non-inking data address generation compensation data of the compensation nozzle.
- the printing parameter further includes: a second feathering amplitude, the first reciprocating scanning printing number is 1, the acquiring the printing parameter, and performing the feathering processing on the first print data corresponding to the printing parameter to obtain the first
- the second print data includes:
- the first print data corresponding to the print overlap area is feathered to obtain second print data.
- the method comprises: defining a distance T between the abnormal nozzle and a first nozzle in a direction in which a relative displacement of the head and the printing medium increases, the number of nozzles being x1, The relative displacement is x2, and the number of nozzles corresponding to the printing overlap area is r,
- the compensation nozzle is at a distance Y from the first nozzle:
- the first data corresponding to the abnormal nozzle is acquired in the second print data corresponding to the mth printing, and the second printing corresponding to the m-1th printing is performed according to the compensation nozzle position information.
- the first data corresponding to the abnormal nozzle is acquired in the second print data corresponding to the mth printing, and the second printing corresponding to the m+1th printing is performed according to the compensation nozzle position information.
- the second data corresponding to the compensation nozzle is obtained in the data, and the first data is correspondingly written into the non-inking data address in the second data to generate compensation data.
- the printing parameter further comprises: a first nozzle number of overlapping nozzle regions of adjacent two nozzles, and a second nozzle number of a single nozzle.
- the obtaining the printing parameter, and performing the feathering process on the first print data corresponding to the printing parameter to obtain the second print data comprises:
- the complementary feathering data is obtained by the following formula:
- E is the data corresponding to the unit matrix
- the elements in the unit matrix are all 1
- P' is the complementary feathering data
- P is the feathering data
- the m nozzles have two overlapping nozzle regions respectively recorded as a second overlapping nozzle region and a third overlapping nozzle region, and the mth nozzle further includes a second non-overlapping nozzle region.
- the number of nozzles corresponding to the second overlapping nozzle area is recorded as the number of second overlapping nozzles
- the number of nozzles corresponding to the third overlapping nozzle area is recorded as the number of third overlapping nozzle
- X is an integer greater than zero, and when the abnormal nozzle number X is less than or equal to the number of the second overlapping nozzles of the mth nozzle, compensation of the print data corresponding to the abnormal nozzle is compensated.
- the nozzle is located in the m-1th nozzle, and the compensation nozzle number is obtained by the following formula:
- Y is the compensation nozzle number
- X is the abnormal nozzle number
- D is the number of the second non-overlapping nozzles of the m-1th nozzle
- Z is the second overlap of the m-1th nozzle Number of nozzles
- the compensation nozzle for compensating the print data corresponding to the abnormal nozzle is located at the m+1th nozzle
- the compensation nozzle number is obtained by the following formula:
- Y is the compensation nozzle number
- X is the abnormal nozzle number
- T is the number of the second non-overlapping nozzles of the mth head
- U is the number of the second overlapping nozzles of the mth head.
- the determining the abnormal nozzle position information in the nozzle includes:
- An abnormal nozzle position in the spray head is determined based on the actual nozzle state map and the reference nozzle state map.
- the method further includes:
- the determining the abnormal nozzle position information in the nozzle includes:
- Transmitting a first detection signal controlling each nozzle of the nozzle to eject ink and obtaining a first feedback signal corresponding to each nozzle after the first detection signal passes a predetermined injection trajectory of each of the nozzles, and the predetermined injection trajectory is a movement trajectory of the ink droplet when the nozzle is normal;
- an embodiment of the present invention provides an inkjet printer nozzle abnormality compensation device, the device comprising:
- An abnormal nozzle position determining module for determining abnormal nozzle position information in the nozzle
- a compensation nozzle position determining module configured to acquire a printing parameter, determine first data corresponding to the abnormal nozzle, and determine, according to the abnormal nozzle position information and the printing parameter, the first data of the nozzle to compensate the abnormal nozzle Corresponding compensation nozzle position information;
- a compensation data generating module configured to acquire, according to the printing parameter, second data corresponding to the compensation nozzle during normal printing, the second data comprising ink discharging data and non-inking data, determining the second data The address of the medium non-inking data, the first data corresponding to the address of the non-inking data is generated to generate compensation data.
- an embodiment of the present invention provides an inkjet printer including: a control unit, a nozzle unit, and a nozzle compensation unit, wherein the control unit controls the nozzle compensation unit to compensate an abnormal nozzle in the nozzle unit,
- the nozzle compensation unit is the inkjet printer nozzle abnormality compensation device according to the second aspect.
- the inkjet printer nozzle abnormality compensation method and device and the inkjet printer provided by the embodiments of the present invention not only repair the problem that the image quality of the abnormal nozzle is abnormal, but also reduce the maintenance cost of the nozzle.
- FIG. 1 is a schematic diagram of a 4 pass scan print of a reciprocating scan print in a prior art ink jet printer.
- Fig. 2 is an effect diagram of the prior art.
- FIG. 3 is a flow chart of an inkjet printer nozzle abnormality compensation method according to a preferred embodiment of the present invention.
- Fig. 4 is a flow chart showing the abnormal nozzle position determination of the ink jet printer nozzle abnormality compensation method according to the preferred embodiment of the present invention.
- Fig. 5 is a schematic view showing the structure of a nozzle of an ink jet printer nozzle abnormality compensation method according to a preferred embodiment of the present invention.
- Fig. 6 is a flow chart showing the abnormal nozzle position determination of the ink jet printer nozzle abnormality compensation method of the ink jet printer according to the preferred embodiment of the present invention.
- Fig. 7 is a view showing the determination of the position of the compensation nozzle of the nozzle abnormality compensation method of the ink jet printer according to the preferred embodiment of the present invention.
- Figure 8 is a schematic view showing the compensation of the nozzle abnormality compensation method of the ink jet printer according to the preferred embodiment of the present invention.
- FIG. 9 is a schematic view showing compensation of an inkjet printer nozzle abnormality compensation method according to a preferred embodiment of the present invention.
- Fig. 10 is a view showing the effect of the nozzle abnormality compensation method of the ink jet printer according to the preferred embodiment of the present invention.
- Fig. 11 is a flow chart showing a nozzle abnormality compensation method of the ink jet printer according to the first embodiment of the present invention.
- Fig. 12 is a view showing the compensation of the nozzle abnormality compensation method of the ink jet printer according to the first embodiment of the present invention.
- Fig. 13 is a schematic view showing the arrangement of nozzle heads in the nozzle abnormality compensation method of the ink jet printer according to the second embodiment of the present invention.
- Fig. 14 is a flow chart showing a nozzle abnormality compensation method of the ink jet printer according to the second embodiment of the present invention.
- Fig. 15 is a view showing the compensation of the nozzle abnormality compensation method of the ink jet printer according to the second embodiment of the present invention.
- Fig. 16 is a flow chart showing a nozzle abnormality compensation method of an ink jet printer according to a third embodiment of the present invention.
- Fig. 17 is a view showing the structure of a head of an ink jet printer nozzle abnormality compensation method according to a third embodiment of the present invention.
- Fig. 18 is a view showing the abnormal nozzle position determination of the nozzle abnormality compensation method of the ink jet printer according to the third embodiment of the present invention.
- Fig. 19 is a view showing the compensation of the nozzle abnormality compensation method of the ink jet printer according to the third embodiment of the present invention.
- Fig. 20 is a view showing the configuration of an nozzle abnormality compensation device for an ink jet printer according to a fourth embodiment of the present invention.
- Figure 21 is a schematic view showing the structure of an ink jet printer according to a fifth embodiment of the present invention.
- Fig. 22 is a view showing the configuration of an ink jet printer nozzle abnormality compensation apparatus according to a sixth embodiment of the present invention.
- an embodiment of the present invention provides an inkjet printer nozzle abnormality compensation method, which is mainly for compensating when an abnormality occurs in a nozzle of an inkjet printer nozzle, so as to achieve normal printing image without affecting image printing.
- the quality of the image on the media includes:
- determining the abnormal nozzle position information in the nozzle by using the printing state diagram includes the following steps:
- the nozzle 400 includes four channels: a first channel 410, a second channel 420, a third channel 430, and a fourth channel 440, each of which prints one type. Color, each channel has several nozzles, assuming each nozzle has V nozzles.
- the printed state diagram consists of 4V line segments, each of which has a position indicator, each One line segment is formed by one nozzle independently printing; when an abnormal nozzle appears in the nozzle 400, the printed state diagram will have a significant missing line segment condition, and the specific position information of the abnormal nozzle can be known according to the position identification of the missing line segment.
- the showerhead 400 includes only one channel, and a plurality of showerheads 400 are mounted in the printer, each nozzle printing a color.
- the plurality of printheads form a channel that prints a color.
- determining abnormal nozzle position information in the nozzle by using a sensor includes the following steps:
- the method uses the laser beam emitted by the two sensors (ie, the first detection signal and the second detection signal) to detect the abnormal nozzle in the nozzle, and the first feedback signal of the first sensor and the second feedback of the second sensor
- the signal combination is used to determine the abnormal nozzle position information in the nozzle, avoiding the problem that the detection result is inaccurate due to the detection error caused by the sensor itself, and avoiding the influence of the abnormal nozzle on the printed product during the formal printing.
- the number of sensors can be added to speed up the detection speed and the detection accuracy, and the number of specific sensors is selected according to needs.
- the abnormal nozzle position information can be determined, but also the specific abnormal state of the abnormal nozzle, such as blockage, oblique spray, faintness, insufficient ink amount, etc.; however, when oblique spray, faintness, and insufficient amount of ink occur, If the abnormal nozzle is not turned off, the abnormal nozzle will still ink the printed product when printing, resulting in uneven density of the ink droplets on the product. Therefore, it is necessary to turn off the abnormal nozzle before making compensation.
- the specific method is as follows:
- S200 Obtain a printing parameter, determine first data corresponding to the abnormal nozzle, and determine, according to the abnormal nozzle position information and the printing parameter, a compensation nozzle position information corresponding to the first data of the nozzle that compensates the abnormal nozzle. ;
- the printing parameters include: a relative displacement of the printing medium and the nozzle, a number of nozzles, and a number of first reciprocating scanning prints.
- the number of times of the first reciprocating scanning printing indicates the number of times of coverage of the unit area of the printing medium, that is, the number of passes, and the number of passes is an integer greater than or equal to 2, and the printing medium or the head moves a certain distance after each scanning (1 pass) of the head. That is, the relative displacement of the print medium and the print head is recorded as the paper feed distance.
- the first reciprocating scanning printing times may be calculated according to the printing device characteristics in the printing parameters and the printing requirements of the image to be printed, wherein the printing device features include: a single The accuracy of the nozzle, the lateral raster accuracy of the printer; the printing requirements of the image to be printed include: the accuracy value of the image to be printed along the paper feed direction, the accuracy of the image to be printed and the paper feed direction.
- the number of the first reciprocating scanning prints is obtained by the following formula:
- x1 is the precision value of the image to be printed in the paper-feeding direction
- x2 is the precision of the vertical and paper-feeding direction of the image to be printed
- x3 is the precision of a single nozzle
- x4 is the printing
- the horizontal raster precision value of the device, y, x1, x2, x3, x4 are all natural numbers greater than zero.
- the paper feed distance (relative displacement of the print medium and the print head) is obtained by the following formula:
- z is the paper feed distance
- x 5 is the number of nozzles of a certain channel
- y is the number of times of the reciprocating scan printing
- z and x 5 are all natural numbers greater than zero.
- determining the compensation nozzle position information includes: defining the number of times of the first reciprocating scanning printing as R, R being an integer greater than or equal to 2, the nozzle corresponding to the R group nozzle, when the R group nozzle is the vth
- a nozzle corresponding to the abnormal nozzle position is selected from the remaining R-1 group nozzles of the R group nozzle as an alternative compensation nozzle, from the alternative compensation nozzle
- the compensation nozzle is selected to compensate the abnormal nozzles, and each abnormal nozzle corresponds to at least one compensation nozzle, wherein v is an integer greater than or equal to 1.
- the nozzle includes four channels: a black channel C1, a cyan channel C2, a magenta channel C3, and a yellow channel C4, each of which has 16 nozzles.
- the nozzle of the black channel C1 is as shown in FIG.
- the four groups are divided into four groups: a group 1 a1, a second group a2, a third group a3, and a fourth group a4, and each of the four nozzles has a nozzle No. 1 and a No. 2 nozzle in the paper feed direction L2.
- the abnormal nozzle is the No. 1 nozzle of the first group a1 and the No.
- the No. 1 nozzle of the second group a2, the No. 1 nozzle of the third group a3, and the No. 1 nozzle of the fourth group a4, and the compensation nozzle position of the No. 2 nozzle of the fourth group a4 has the first group a1 No. 2 nozzle, No. 2 nozzle of the second group a2, and No. 2 nozzle of the third group a3.
- second data corresponding to the compensation nozzle when the normal printing is performed the second data includes ink discharging data and non-inking data, and determining non-inking data in the second data.
- An address, the first data corresponding to the address of the non-inking data is generated to generate compensation data.
- the specific compensation of an abnormal nozzle of a nozzle in the reciprocating scanning mode is as follows:
- the first data corresponding to the abnormal nozzle is acquired according to the abnormal nozzle position information.
- the first data is recorded as the first abnormal nozzle print data.
- the first abnormal nozzle print data is set as:
- n is the number of data of SrcData x
- S is specific data information
- the second data corresponding to the compensation nozzle during normal printing is obtained, specifically: the data of the printing area includes a P data block (P is a natural number greater than 0), and the P data block According to the order of printing, the first data block, the second data block, the ... P-1 data block, and the P data block, the d-th data block is printed by the d-th group nozzle, and d is a natural number greater than 0 and d is less than or equal to P. And extracting, according to the compensation nozzle position information, the second data corresponding to the compensation nozzle from the P compensation compensation nozzle data block.
- P is a natural number greater than 0
- the compensation nozzle of the group E determines whether the compensation nozzle of the group E is abnormal, and if normal, extracting the second data of the P corresponding to the compensation nozzle of the first P data block, and the second data of the Pth
- the second abnormal nozzle print data is ORed to obtain the Pth actual print data, and the compensation ends. Since the compensation nozzle is no longer available, the compensation ends.
- the mth second data corresponding to the compensation nozzle of the mth group e is:
- n is the number of data of DstData m
- D is specific data information
- m is the group number of the compensation nozzle.
- the ink is not limited.
- ⁇ represents a value and ⁇ represents another value.
- ⁇ represents a value and ⁇ represents another value.
- DstData m' is the mth actual print data corresponding to the compensation nozzle of the mth group e.
- SrcData 1 there is provided in the n data needs to be compensated, DstData m and n 1 has a non-ink data may be compensated in the data SrcData 1, SrcData 1 removed from the corresponding data obtained SrcData 2:
- n-n1 ⁇ 0 it means that the data in SrcData 1 is not compensated. If there is no compensation nozzle left unprocessed, the data in SrcData 2 is no longer processed;
- the second data DstData m+1 corresponding to the compensation nozzle of the m+ 1th group e is extracted, and the data in DstData m+1 and SrcData 2 is performed. Operation, the result is assigned to DstData m+1' , ie
- DstData m+1' is the m+1th actual print data corresponding to the compensation nozzle on the m+1th group.
- the paper feed direction is L4 as shown in the figure
- the first data block of the first pass print is F1
- the second data block of the second pass print is F2
- the third pass is F3
- the fourth data block printed on the fourth pass is F4, and the nozzles of one channel are equally divided into four groups: group 1 c1, group 2 c2, group 3 c3, and fourth.
- the abnormal nozzle position is set to correspond to the third group nozzle of the first group c1, and the compensation nozzle of the abnormal nozzle is changed from one without feathering to three: two groups: c2, third
- the nozzle, the third group c3 third nozzle, and the fourth group c4 third nozzle, and the first data corresponding to the third nozzle in the first data block F1 may be referred to as first abnormal nozzle print data SrcData 1 , which is SrcData 1
- DstData 2 the second data corresponding to the third nozzle in the second data block F2
- the second data corresponding to the third nozzle in the third data block F3 is recorded as DstData 3
- 4, the second data corresponding to the third nozzle in the data block F4 is recorded as DstData 4
- SrcData 1 [20] ⁇ S1, S2, S3, S4, S5, S6, S7, S8, S9, S10,
- DstData 2 [20] ⁇ 0,1,2,0,3,2,3,0,1,2,0,0,1,3,2,0,3,0,2,1 ⁇
- the second actual compensation nozzle print data of the second group of the third nozzle is obtained by the above operation as DstData 2'
- DstData 2' [20] ⁇ S1,1,2,S4,3,2,3,S8,1,2,S11,S12,1,3,2,S16,3,S18,2,1 ⁇
- the second abnormal nozzle print data is:
- SrcData 2 [13] ⁇ S2, S3, S5, S6, S7, S9, S10, S13, S14, S15, S17, S19, S20 ⁇
- the number of data in SrcData 2 is not 0, and the compensation is continued.
- DstData 3 [13] ⁇ 0,2,3,0,1,0,2,2,1,3,2,0,3 ⁇
- the third actual print data of the third nozzle of the third group is obtained by the above operation as DstData 3'
- DstData 3' [13] ⁇ S2,2,3,S6,1,S9,2,2,1,3,2,S19,3 ⁇
- the third abnormal nozzle print data is:
- the fourth actual print data of the fourth nozzle of the fourth group is calculated as DstData 4' and third abnormal nozzle print data SrcData 4 .
- DstData 4 [9] ⁇ 2,0,0,0,0,2,0,0,0 ⁇
- DstData 4 can compensate SrcData
- the fourth actual print data of the third nozzle of the fourth group is obtained by the above operation as DstData 4'
- DstData 4' [9] ⁇ 2,S5,S7,S10,S13,2,S15,S17,S20 ⁇
- the fourth abnormal nozzle print data is:
- the fourth abnormal nozzle print data has two data without compensation, but all the holes are used up, so the compensation stops.
- the third group c2 third nozzle prints according to the data in DstData 2'
- the third group c3 third nozzle prints according to the data in DstData 3'
- the printing is performed.
- the fourth group c4 third nozzle prints according to the data in the DstData 4'
- the partial data of the third group nozzle of the first group c1 is the second group third nozzle, the third group third nozzle, and the third group.
- the second nozzle of the two groups is compensated and printed, and the problem that the printed image is broken or the effect is poor due to the abnormal state of the nozzle of the nozzle is solved.
- the specific compensation step includes (recording the current print containing the abnormal nozzle as the first abnormal nozzle):
- S340 if any, is recorded as a second abnormal nozzle, and obtains print position information corresponding to the second abnormal nozzle on the printing medium according to the second mapping relationship, and calculates a print range covering the current print medium.
- the compensation nozzle capable of compensation writes the print data of the second abnormal nozzle backed up in the second mapping relationship to the non-inking data address generation compensation data of the compensation nozzle.
- the second mapping relationship is not stored, so that the first abnormal nozzle will not be searched.
- the mapping relationship the current printing cannot compensate for the first abnormal nozzle.
- the number of times of the first reciprocal scanning printing is P
- P is an integer greater than or equal to 2
- the current printing index is recorded as X
- the X Refers to the number of times from the start of the entire print to the current number of prints, one by one, whether all the abnormal nozzles fall within the P print range from the current print, and one of the abnormal nozzles is the first a nozzle
- the Xth print start position is equal to the relative displacement between the first X print media and the print head, denoted as S x
- the new coverage distance of the Xth print on the print medium denoted as h x
- the height of the nozzle is recorded as H
- the new coverage of the Xth printing is recorded as [S x + Hh x , S x + H]
- the first nozzle is opposite to the print head and the print medium.
- the distance between the first nozzles in the direction of increasing displacement is W, then the corresponding starting position in the X+0th, X+1th, ..., X+P-1th printing They are: S x , S x+1 ,..., S X+P-1 , then the new coverage of each print is: [S x +Hh x ,S x +H],
- the printing positions of the first nozzles are respectively: S x + W, S x+1 + W, ..., S X + P - 1 + W, if the printing position of the first nozzle on the printing medium is corresponding
- the mapping relationship is not recorded in the first mapping relationship; if the printing position of the first nozzle on the printing medium is located in the corresponding printing new coverage And storing the first mapping relationship, the first mapping relationship includes a corresponding printing index, the first nozzle corresponds to the printing position, and the first nozzle is taken out The first data.
- the height of the nozzle is set to 12 (the numerical values herein are for convenience of explaining the technical solution of the present invention, and these integer values are all set under the same reference standard, and those skilled in the art are Based on the disclosure of the present embodiment, the technical solution of the present invention can be completely implemented, and the integer is also convenient for description, corresponding to 12 nozzles, and the number of times of the first reciprocating scanning is 4 times (4 times), that is, Each original image needs to be covered by 4 times of component printing. Each component prints a coverage distance of 3 (corresponding to a quarter of the height of the nozzle, and the coverage distance of the nozzle in the same area per pass). Currently, the first pass is printed.
- the first pass print start position is 0, and the first pass print has a new coverage range of [9, 12]; the first nozzle and the first nozzle in the direction in which the relative displacement of the print head and the print medium increases
- the distance between the four nozzles is abnormal (the abnormality occurs in the fourth nozzle from the starting position), the first nozzle is an abnormal nozzle and only one of the nozzles is provided, and the moving distance of the printing medium after the first pass printing is 3,
- the moving distance of the printing medium is 3
- the moving distance of the printing medium after the 3th pass printing is 3
- the moving distance of the printing medium after the 4th pass printing is 3.
- the printing position of the first nozzle on the printing medium is 4, the new coverage is not printed [9, 12], and the first mapping relationship is not saved; the printing of the first nozzle on the printing medium is performed during the 2nd printing.
- the position is 7, not printing the new coverage [9, 12], the first mapping relationship is not saved;
- the third nozzle prints the print position on the print medium to 10, and the new coverage is printed [9, 12], the save mapping relationship is recorded as a first mapping relationship, including printing index 3, the first nozzle corresponds to the printing position 10, and the print data of the backup first nozzle is taken out; the printing position of the first nozzle on the printing medium when the 4th pass printing is 13, does not print new coverage [9, 12], does not save the first mapping relationship.
- the step of writing the first data into the address of the non-inking data in the second data to generate compensation data is as follows:
- the stored first mapping relationship is searched one by one, and the abnormal nozzle corresponding to one of the mapping relationships is recorded as a second nozzle, and the second nozzle printing position is taken out from the first mapping relationship. If the second nozzle print position is smaller than the current print start position, the first mapping relationship is considered obsolete, and the first mapping relationship is deleted from the memory; if the print position is greater than or equal to the current print start position, then The mapping relationship is valid, the printing position of the second nozzle is subtracted from the value of the starting position of the current printing, denoted as Z x , and if Z x is smaller than the height H of the head, the second nozzle corresponds to the first A print data can be compensated for, that is, an abnormally missing print line falls within the range of the print head.
- each nozzle position information in the nozzle if the nozzle corresponding to the Z x position is a normal nozzle, the nozzle corresponding to the Z x position serves as a compensation nozzle of the second nozzle, which is recorded as a third nozzle, and the second nozzle is
- the first data is written into the non-inking data address of the second data corresponding to the third nozzle to obtain the compensation data of the third nozzle, and the print data corresponding to the third nozzle includes the original ink discharging data and writing Incoming compensation data; simultaneously clearing corresponding compensated data of the second nozzle that has been written into the third nozzle in the memory; for the second nozzle, in the opposite direction of the printing medium and the nozzle
- the corresponding to the second nozzle may be continuously obtained until the data of the second nozzle is compensated for writing or the first mapping relationship corresponding to the second nozzle Obsolete, the third data is the remaining data to be compensated after the second data is compensated, the fourth data is the remaining data to be compensated after the third data is compensated, and the Nth data is the Nth- 1 data The remaining data is compensated to be compensated, wherein 4 ⁇ N ⁇ M, N rounded.
- the print position of the print medium corresponding to the first mapping relationship has been obtained as 10.
- the printing start position is 0 (both based on the same reference standard), and the first mapping relationship corresponding to the printing position minus the current printing start position is 10, which is smaller than the nozzle height 12
- the nozzle having a distance of 10 from the first nozzle in the direction in which the relative displacement of the nozzle and the printing medium increases is a normal nozzle, that is, the first compensation nozzle of the first mapping relationship is found,
- the first mapping relationship corresponds to the non-inking address of the first compensation nozzle written by the print data, and the compensation data of the first compensation nozzle is obtained, and the print data corresponding to the first mapping relationship is cleared at the current printing.
- the portion of the data that is compensated for, the first compensated data of the first mapping relationship is obtained;
- the printing start position is 3
- the first mapping relationship corresponding to the printing position minus the current printing starting position is 7 and is smaller than the nozzle height 12, and the nozzle is printed and printed.
- the nozzle having a distance of 7 from the first nozzle in the direction in which the relative displacement of the medium is increased is a normal nozzle, that is, the second compensation nozzle of the first mapping relationship is found, and the first compensation data is obtained.
- the printing start position is 6, and the first mapping relationship corresponds to the printing position minus the current printing starting position, and the value is 4, which is smaller than the nozzle height 12, and the nozzle is printed and printed. If the nozzle having a distance of 4 from the first nozzle in the direction in which the relative displacement of the medium is increased is an abnormal nozzle, the first mapping relationship cannot be compensated for this time;
- the printing start position is 9
- the first mapping relationship corresponding to the printing position minus the current printing starting position is 1 value, less than the nozzle height 12
- the print head and the printing a nozzle having a distance of 1 from the first nozzle in a direction in which the relative displacement of the medium is increased is a normal nozzle, that is, a third compensation nozzle in which the first mapping relationship is found, and a second nozzle in the first nozzle
- the data after the second compensation is written into the non-inking address of the third compensation nozzle to obtain the compensation data of the third compensation nozzle, and the data after the second compensation is compensated in the current printing is cleared. Partial data, obtaining the third post-compensation data of the first mapping relationship;
- the printing start position is 12, and the first nozzle corresponding printing position 10 is already smaller than the current printing start position 12, the first mapping relationship cannot be compensated since the 5th printing. , stop compensation.
- FIG. 10 is an effect diagram of the above technical solution of the present invention. As can be seen from FIG. 10, after the abnormal nozzle is compensated, the printing effect is almost The effect of the normal ink discharge of all the nozzles of the nozzle is the same, and the problem of disconnection or blanking in the background art does not occur. There is no need to easily replace the nozzle due to nozzle problems, which greatly saves the cost of the inkjet printing device.
- the embodiment adds a feathering process to the above preferred embodiment, which increases the compensation opportunity of the abnormal nozzle and improves the quality of the printed product.
- the specific steps include:
- S1202 Obtain a print parameter, and perform feathering processing on the first print data corresponding to the print parameter to obtain second print data;
- the second print data includes the first data and the second data.
- the printing parameter further includes: a feathering amplitude, wherein the specific steps of performing the feathering processing on the first print data corresponding to the printing parameter to obtain the second print data are as follows:
- the second print data is obtained by performing feathering processing on the first print data corresponding to the print parameter, and the number of non-ink discharge data in the second print data after the feathering process is greater than the first The amount of non-inking data in the print data, thereby increasing the chance of compensation for the abnormal nozzle; and the specific compensation method is the same as the compensation method of the preferred embodiment, except that the data of all the nozzles in this embodiment are from The first data of the abnormal nozzle and the second data of the compensation nozzle are acquired in the second print data obtained after the feathering, and it is determined that the compensation nozzle position information is determined by the number of times of the second reciprocating scan printing.
- the paper feeding distance (relative displacement of the printing medium and the nozzle) is obtained by the following formula:
- x5 is the number of nozzles in a channel
- r is the number of feathering points obtained by the feathering amplitude
- y1 is the number of first reciprocating scanning prints
- q is the paper feed distance
- the number of the second reciprocating scanning prints is obtained by the following formula:
- the specific processing process of the first print data is: dividing the first print data matrix corresponding to the first print data of a certain channel of a certain area to be printed into three parts according to the number of feather points, respectively, being the first sub-print data matrix, a second sub-print data matrix and a third sub-print data matrix, wherein the first sub-print data matrix and the third sub-print data matrix are equal in height, the first sub-print data matrix, the second sub-print data The widths of the matrix and the third sub-print data matrix are equal, and a height sum of the first sub-print data matrix, the second sub-print data matrix, and the third sub-print data matrix is equal to the certain channel The number of nozzles.
- Presetting the template selecting the feathering template according to the number of feathering points, extracting the feathering data matrix corresponding to the feathering template, and subtracting the feathering data matrix from the unit matrix to obtain the complementary feathering data matrix, the height of the unit matrix and the feathering data
- the heights of the matrices are equal, and the width of the unit matrix is equal to the width of the feathered data matrix.
- Performing a correlation operation on the feathered data matrix and the first sub-print data matrix to obtain a first feathered data matrix wherein the complementary feathered data matrix and the third sub-print data matrix are phase-operated to obtain a second feathered data a matrix, the second sub-print data matrix is not processed, and the first feathered data matrix, the second sub-print data matrix, and the second feathered data matrix are combined to form a certain channel of a certain area to be printed a second print data matrix, wherein the second print data matrix corresponds to second print data of a certain channel of a certain area to be printed, and the number of non-ink discharge data in the second print data is greater than the first print The amount of non-inking data in the data, thus increasing the chance of compensation for the first data corresponding to the abnormal nozzle.
- the height of the feathered data matrix is equal to the height of the first sub-print data matrix
- the width of the feathered data matrix is equal to the width of the first sub-print data matrix.
- the width of the feathered data matrix may be smaller than the width of the first sub-print data matrix, and the width of the feathered data matrix may be greater than the width of the first sub-print data matrix, which is not specifically limited herein.
- the phasewise operation of the feathered data matrix and the first sub-print data matrix obtains a first feathered data matrix, specifically: the feathered data matrix is T, and the first sub-print data matrix M, then the first feathered data matrix is:
- ⁇ is a matrix point multiplication operation
- M1 is a first feathered data matrix
- the complementary feathered data matrix is obtained by the following formula:
- E is the identity matrix
- the elements in the identity matrix are all 1
- T' is the complementary feathered data moment
- the complementary feathered data matrix and the third sub-print data matrix are ANDed to obtain a second feathered data matrix, and the second feathered data matrix is:
- M' is the third sub-print data matrix
- .x is the matrix point multiplication operation
- M2 is the second feathered data matrix
- the paper feeding direction is as shown in the figure L5, and the first data block of the first pass printing is F1, the second pass.
- the second data block to be printed is F2
- the third data block printed by the third pass is F3
- the fourth data block printed by the fourth pass is F4
- the fifth data block printed by the fifth pass is F5
- the sixth data block printed by the sixth pass is the sixth data block.
- the nozzles of one channel are divided into six groups, which are the first group c1, the second group c2, the third group c3, the fourth group c4, the fifth group c5, and the sixth group c6, and the abnormal nozzle is set.
- the compensation nozzle positions of the second group c2 first nozzle include the first group c1 first nozzle, the third group c3 first nozzle, and the fourth group.
- the fourth group c4 second nozzle has the first nozzle c1 second nozzle, the second group c2 second nozzle, and the second nozzle Three sets of c3 second nozzles, fifth group c5 second nozzles, and sixth group C6 second nozzles.
- the data compensation of the first group c2 first nozzle is specifically compensated by the following steps: the first data corresponding to the first nozzle in the second data block F2 is extracted as SrcData 1 , and the first nozzle corresponding to the first data block F1
- the second data is denoted as DstData 1
- the second data corresponding to the first nozzle in the third data block F3 is denoted as DstData 3
- the second data corresponding to the first nozzle in the fourth data block F4 is denoted as DstData 4
- the second data corresponding to the first nozzle in the block F5 is denoted as DstData 5
- the second data corresponding to the first nozzle in the sixth data block F6 is denoted as DstData 6 .
- the first actual print data of the first group c1 first nozzle is calculated as DstData 1' and second abnormal nozzle print data SrcData 2 .
- SrcData 1 [20] ⁇ S1, S2, S3, S4, S5, S6, S7, S8, S9, S10,
- DstData 1 [20] ⁇ 0,1,2,0,3,2,3,0,1,2,0,0,1,3,2,0,3,0,2,1 ⁇
- the second abnormal nozzle print data is:
- SrcData 2 [13] ⁇ S2, S3, S5, S6, S7, S9, S10, S13, S14, S15, S17, S19, S20 ⁇
- the number of data in SrcData 2 is not 0, and the compensation is continued.
- the third actual print data of the third group c3 first nozzle is calculated as DstData 3' and third abnormal nozzle print data SrcData 3 .
- DstData 3 [13] ⁇ 0,2,3,0,1,0,2,2,1,3,2,0,3 ⁇
- the actual compensation nozzle print data of the third group c3 first nozzle is DstData 3'.
- DstData 3' [13] ⁇ S2,2,3,S6,1,S9,2,2,1,3,2,S19,3 ⁇
- the third abnormal nozzle print data is:
- the fourth actual print data of the fourth group c4 first nozzle is calculated as DstData 4' and third abnormal nozzle print data SrcData 4 .
- DstData 4 [9] ⁇ 2,0,0,0,0,2,0,0,0 ⁇
- DstData 4 can compensate SrcData
- the fourth actual print data of the fourth group c4 first nozzle is DstData 4'.
- DstData 4' [9] ⁇ 2,S5,S7,S10,S13,2,S15,S17,S20 ⁇
- the fourth abnormal nozzle print data is:
- the fifth actual print data of the fifth group c5 first nozzle is calculated as DstData 5' and third abnormal nozzle print data SrcData 5 .
- the fifth actual print data of the fifth group c5 first nozzle is DstData 4'.
- the fifth abnormal nozzle print data is:
- the first nozzle of the first group c2 is printed by the data in the DstData1'
- the third nozzle of the third group c3 is printed by the data in the DstData3'
- the fourth data is printed.
- the fourth group c4 first nozzle prints according to the data in DstData4'
- the fifth group c5 first nozzle prints according to the data in DstData5'
- the sixth data block F6 is printed.
- the partial data of the three nozzles of the second group c2 is the first group c1 first nozzle, the third group c3 first nozzle, and the fourth group c4 first nozzle. It was added to the fifth nozzle of the fifth group c5.
- the method of compensating the two nozzles of the abnormal nozzle fourth group c4 is the same as the method of the one nozzle of the second nozzle group c2 of the abnormal nozzle, and will not be described herein.
- the other parts of the above embodiments are the same as the best mode, and the detailed description is referred to the description of the preferred embodiment.
- the present embodiment is directed to one-time scanning printing, that is, the number of times of the first reciprocating scanning printing is 1, and the number of times of the first reciprocating scanning printing indicates the number of times of coverage of the printing medium unit area.
- the number of times of the coverage in the example is 1.
- the printing parameter further includes: a second feathering range. After the feathering process, the two overlapping printings in the embodiment have a printing overlap area, and the first print data is It is the print data corresponding to the overlap area.
- a certain area B of the image to be printed needs to be covered twice, and the moving direction of the printing medium is L2 in FIG. 13, the moving direction of the head is Z2 in FIG.
- the head moves E1 for the first time.
- the area B is printed once by the nozzle J1, the printing medium moves less than the nozzle value of the nozzle, the nozzle moves E2 for the second time, the area B is printed again by the nozzle J2, the area B is printed, and the printing method of the other overlapping areas is the same. B is the same.
- the specific implementation steps of this embodiment include:
- obtaining a print parameter to determine a print overlap area performing feathering processing on the first print data corresponding to the print overlap area to obtain second print data, setting a feathering width, and obtaining a feathering point and the printing overlap area according to the feathering width.
- the number of overlapping nozzles corresponding to the printing overlap area is equal to the number of feathering points. Determining, according to the number of feathering points, the relative displacement of the printing medium and the nozzle as the number of paper feed points, and determining the compensation nozzle position information for compensating the print data corresponding to the abnormal nozzle by the number of paper feed points, wherein the compensation nozzle and the abnormal nozzle are located in the same On the channel.
- the number of paper feed points is obtained by the following formula:
- x1 is the number of nozzles in a channel
- r is the number of feathering points
- x2 is the number of paper feed points
- x1, r, and x2 are all integers greater than zero.
- the nozzles of a certain channel are numbered according to the paper feeding direction, and the abnormal nozzle number is determined according to the position information of the abnormal nozzle.
- the abnormal nozzle number is greater than the value of the number of feathering points is smaller than the value of the paper feeding point, the abnormality
- the first data corresponding to the nozzle cannot be compensated because there is no compensation nozzle.
- the compensation nozzle number of the print data corresponding to the compensation abnormal nozzle is obtained by the following formula:
- the compensation nozzle number of the first data corresponding to the compensation abnormal nozzle is obtained by the following formula:
- the print data corresponding to a certain channel after the mth paper feed is the original print data matrix.
- m is a natural number greater than zero
- the original print data matrix is divided into a first print data sub-matrix and a second print data.
- Submatrix and third print data submatrix are a natural number greater than zero
- a height sum of the first print data sub-matrix, the second print data sub-matrix, and the third print data sub-matrix equal to a number of nozzles of the channel, the first print data sub-matrix and the third The heights of the print data sub-matrices are equal, the height of the first print data sub-matrix is equal to the number of feathering points; the first print data sub-matrix and the third print data sub-matrix are located in the overlapping area,
- the print data corresponding to the overlap region is the first print data
- the original print data corresponding to the original print data matrix includes the first print data, and since the height of the first print data sub-matrix is equal to the number of feathering points, The larger the feathering amplitude is, the larger the overlapping area is.
- the first print data sub-matrix and the first The print data corresponding to the matrix formed by the combination of the three print data sub-matrix is the first print data.
- the number of nozzles on the channel is 12, and when the number of feathering points is 2dot, the number of paper feed points is 10dot, and the height of the first print data sub-matrix is 2dot.
- the height of the second print data sub-matrix is 8dot, and the height of the third print data sub-matrix is 2dot.
- the second print data sub-matrix does not exist.
- the number of nozzles on the channel is 18, and when the number of feathering points is 9 dpi, the number of paper feed points is 9 dot, and the height of the first print data sub-matrix is 9 dot.
- the height of the third print data sub-matrix is 9dot, and the second print data sub-matrix does not exist.
- the first data of the abnormal nozzle is acquired from the second print data matrix corresponding to the mth paper feeding according to the abnormal nozzle number.
- the second data corresponding to the compensation nozzle is ORed with the second data of the corresponding compensation nozzle to obtain the actual print data of the compensation nozzle.
- the number of nozzles on the nozzle is 10, when the number of feathering points is 2dot, the number of paper feed points is 6dot, and the abnormal nozzle number is 9, the first data corresponding to the abnormal nozzle
- the compensation nozzle number is 1, the paper feed direction is as shown in the figure L3, and the nozzle movement direction is as shown in the figure Z3.
- the first data of the nozzle No. 9 is obtained from the second print data matrix corresponding to the first paper feed Q1:
- SrcData 1 [20] ⁇ S1, S2, S3, S4, S5, S6, S7, S8, S9, S10,
- the second data of the No. 1 nozzle is obtained from the second print data matrix corresponding to the second paper feed Q2:
- DstData 2 [20] ⁇ 0,1,2,0,3,2,3,0,1,2,0,0,1,3,2,0,3,0,2,1 ⁇
- DstData 2' [20] ⁇ S1,1,2,S4,3,2,3,S8,1,2,
- the nozzle No. 1 is printed according to the data in DstData2', and the data in the No. 9 nozzle of the first paper feed Q1 is compensated and printed by the No. 1 nozzle of the second paper feed Q2.
- the problem that the printed image is broken or blank due to abnormal nozzle state is solved.
- the other parts of the above embodiment are the same as the preferred embodiment and the first embodiment. For a detailed description, refer to the description of the preferred embodiment and the embodiment 1.
- the printing overlap area is formed by overlapping nozzle areas of two adjacent nozzles (ie, multi-head side scan printing), and the abnormal nozzle is located in the overlapping nozzle area.
- the print parameters further include: a number of first nozzles of the overlapping nozzle regions, and a second number of nozzles of a single nozzle.
- the specific implementation steps of this embodiment include:
- S171 Obtain a physically existing overlapping nozzle area according to the printing parameter, and perform feathering processing on the first print data corresponding to the overlapping nozzle area to obtain second print data;
- S174 Acquire, according to the compensation nozzle position information, second data corresponding to the compensation nozzle from the second print data, where the second data includes ink discharge data and non-ink discharge data;
- S175. Determine an address of the non-inking data in the second data, and generate the compensation data corresponding to the address of the non-inking data corresponding to the first print data.
- the number of the nozzles is defined as n.
- the first nozzle has one of the overlapping nozzle regions as the first overlapping nozzle region, and the first nozzle further includes the first nozzle.
- the number of nozzles corresponding to the first overlapping nozzle area is recorded as the number of first overlapping nozzles
- the number of nozzles corresponding to the first non-overlapping nozzle area is recorded as the number of first non-overlapping nozzles;
- the mth nozzle has two of the overlapping nozzle regions respectively recorded as a second overlapping nozzle region and a third overlapping nozzle region, and the second overlapping nozzle region and the third overlapping nozzle region are arranged in a direction according to the nozzle.
- the heads are arranged in the direction shown by L3 in Fig. 17, and each nozzle has 10 nozzles, and the first nozzle V1 and the third nozzle V3 are divided.
- the first overlapping area R1 and the first non-overlapping area F1 the number of nozzles of the first overlapping area R1 is 2, the number of nozzles of the first non-overlapping area F1 is 8, and the second area V2 is divided into the second overlapping area R2, the second The number of nozzles of the non-overlapping area F2 and the third overlapping area R3, the second overlapping area R2 and the third overlapping area R3 is 2, and the number of nozzles of the second non-overlapping area R3 is 6.
- All the nozzles are sequentially numbered according to a certain direction of the nozzle arrangement, and the nozzles on each nozzle are numbered according to the direction in which the nozzles are arranged to obtain a nozzle number, and the abnormal nozzle number of the abnormal nozzle is determined according to the position information of the abnormal nozzle. And an abnormal nozzle number, and the compensation nozzle number and the compensation nozzle number of the compensation nozzle are determined according to the abnormal nozzle number and the abnormal nozzle number.
- X is a natural number greater than zero, and when the abnormal nozzle number X is less than or equal to the number of the second overlapping nozzles of the mth nozzle, the compensation of the print data corresponding to the abnormal nozzle is compensated.
- the nozzle is located in the m-1th nozzle, and the compensation nozzle number is obtained by the following formula:
- Y is the compensation nozzle number
- X is the abnormal nozzle number
- D is the number of the second non-overlapping nozzles of the m-1th nozzle
- Z is the second overlap of the m-1th nozzle Number of nozzles.
- the compensation nozzle for compensating the print data corresponding to the abnormal nozzle is located at the m+1th nozzle
- the compensation nozzle number is obtained by the following formula:
- Y is the compensation nozzle number
- X is the abnormal nozzle number
- T is the number of the second non-overlapping nozzles of the mth head
- U is the number of the third overlapping nozzles of the mth head.
- the arrangement direction of the heads is as shown by L4 in Fig. 18, and the heads have three first nozzles W1, a second nozzle W2, and a third nozzle W3, each of which has 10 nozzles.
- the number of the first overlapping nozzles of the first head W1 and the third head W3 is two
- the number of the first non-overlapping nozzles of the first head W1 and the third head W3 is six
- the number of the second overlapping nozzles of the two heads W2 is two
- the number of the second non-overlapping nozzles of the second head W2 is six
- the number of the third overlapping nozzles of the second head is two.
- the compensation nozzle is located in the No. 1 hole of the second sub-header W2; and when the abnormal nozzle is located in the No. 2 hole of the third sub-header W1 The compensation nozzle is located in the No. 9 hole of the second sub-header W2.
- the first overlapping data matrix corresponding to the first overlapping area of the first head is And feathering the data matrix phase to obtain a first overlapping feathered data matrix, wherein the print data corresponding to the first overlapping feathered data matrix is the first feathered data; and the second overlapping data matrix corresponding to the second overlapping region of the second head is Complementing the data matrix phase and obtaining the second overlapping complementary feathering data matrix, the print data corresponding to the second overlapping complementary feathering data matrix is the second feathering data, and the first print data matrix corresponding to the first print data includes: a first overlapping data matrix of the head and a second overlapping data matrix of the second head, the first feathering data and the second feathering data forming the second print data.
- the first data and the second data are calculated to obtain actual compensated nozzle print data corresponding to the compensation nozzle.
- the head arrangement direction is the direction shown by L5 in FIG. 19, and the head has three first nozzles P1, a second nozzle P2, and a third nozzle P3, each of which has 10 nozzles.
- the number of the first overlapping nozzles of the first head P1 and the third head P3 is two
- the number of the first non-overlapping nozzles of the first head P1 and the third head P3 is six
- the number of the second overlapping nozzles of the two heads P2 is two
- the number of the second non-overlapping nozzles of the second head P2 is six
- the number of the third overlapping nozzles of the second head is two.
- the abnormal nozzle is the No.
- the first data of the No. 9 nozzle of the first nozzle P1 is:
- SrcData 1 [20] ⁇ S1, S2, S3, S4, S5, S6, S7, S8, S9, S10,
- the second data of the No. 1 nozzle in the second nozzle P2 is:
- DstData 2 [20] ⁇ 0,1,2,0,3,2,3,0,1,2,0,0,1,3,2,0,3,0,2,1 ⁇
- the actual compensation nozzle print data of the No. 1 nozzle in the second nozzle P2 is DstData 2'.
- DstData 2' [20] ⁇ S1,1,2,S4,3,2,3,S8,1,2,
- an embodiment of the present invention provides an inkjet printer nozzle abnormality compensation device, where the device includes:
- the abnormal nozzle position determining module 10 is configured to determine abnormal nozzle position information in the nozzle;
- a compensation nozzle position determining module 20 configured to acquire a printing parameter, determine first data corresponding to the abnormal nozzle, and determine, according to the abnormal nozzle position information and the printing parameter, a first one of the nozzle that compensates for the abnormal nozzle Compensating nozzle position information corresponding to the data;
- the compensation data generating module 30 is configured to acquire, according to the printing parameter, second data corresponding to the compensation nozzle during normal printing, the second data includes ink discharging data and non-inking data, and determining the second An address of the non-inking data in the data, and the first data is correspondingly written to the address of the non-inking data to generate compensation data.
- the other parts of the above embodiment are the same as the best embodiment, the first embodiment and the second embodiment. For a detailed description, refer to the description of the preferred embodiment and the first embodiment to the third embodiment.
- an embodiment of the present invention further provides an inkjet printer including: a control unit 210, a showerhead unit 221, and a nozzle compensation unit 222.
- the control unit 210 controls the nozzle compensation unit 222 to the showerhead unit.
- the abnormal nozzle in 221 is compensated, wherein the nozzle compensation unit 222 is the ink jet printer nozzle abnormality compensation device described in FIG.
- the data input unit 100 inputs the print data to the control unit 210 of the inkjet printing apparatus 200, and the control unit 210 accepts the print data control head unit 221 to perform ink ejection on the print medium 300.
- the present invention provides a nozzle compensation unit 222 for compensating for an abnormal nozzle of the head unit 221 in the inkjet printing apparatus 200 for compensating for an abnormal nozzle problem. .
- the other parts of the above embodiment are the same as the best embodiment, the first embodiment and the second embodiment. For details, please refer to the description of the preferred embodiment and the embodiment 1 to the embodiment 4.
- the inkjet printer nozzle abnormality compensation method and device and the inkjet printer provided by the embodiments of the present invention not only repair the problem of image quality deterioration caused by abnormal nozzle ink discharge, but also reduce the nozzle maintenance cost.
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Abstract
Description
Claims (20)
- 一种喷墨打印机喷嘴异常补偿方法,其特征在于,所述方法包括:确定喷头中异常喷嘴位置信息;获取打印参数,确定所述异常喷嘴对应的第一数据,依据所述异常喷嘴位置信息和所述打印参数,确定所述喷头中补偿所述异常喷嘴的第一数据对应的补偿喷嘴位置信息;依据所述打印参数,获取所述补偿喷嘴在正常打印时所对应的第二数据,所述第二数据包括出墨数据和非出墨数据,确定所述第二数据中非出墨数据的地址,将所述第一数据对应写入所述非出墨数据的地址生成补偿数据。
- 根据权利要求1所述的喷墨打印机喷嘴异常补偿方法,其特征在于,所述打印参数包括:打印介质与喷头的相对位移、喷嘴数量及第一往复式扫描打印次数。
- 根据权利要求2所述的喷墨打印机喷嘴异常补偿方法,其特征在于,所述方法包括:定义所述第一往复式扫描打印的次数为R,R为大于等于2的整数,所述喷头对应有R组喷嘴,当所述R组喷嘴的第v组喷嘴中有一个或多个异常喷嘴时,从所述R组喷嘴的余下R-1组喷嘴中选取与所述异常喷嘴位置对应的喷嘴作为备选补偿喷嘴,从所述备选补偿喷嘴中选中补偿喷嘴补偿所述异常喷嘴,每一异常喷嘴对应于至少一个补偿喷嘴,其中v为大于等于1的整数。
- 根据权利要求2所述的喷墨打印机喷嘴异常补偿方法,其特征在于,所述获取打印参数,确定所述异常喷嘴对应的第一数据,依据所述位置信息和所述打印参数,确定所述喷头中补偿所述异常喷嘴的第一数据对应的补偿喷嘴位置信息,包括:定义所述第一往复式扫描打印的次数为P,P为大于等于2的整数,即每块图像由P次覆盖打印而成,当前打印索引记为X,所述X指的是从整个打印开始计数起到当前已经打印的次数,逐一计算所有异常喷嘴是否落在从包含当前打印在内算起的所述P次打印范围之内,记其中一个异常喷嘴为第一喷嘴,所述第X次打印起始位置等于前X次打印介质与喷头之间的相对位移,记为S x; 所述第X次打印在打印介质上的新增覆盖距离,记为h x,喷头的高度记为H,则所述第X次打印新增覆盖范围记为[S x+H-h x,S x+H],记所述第一喷嘴与在所述喷头与打印介质的相对位移增大的方向上的第一个喷嘴之间相距距离为W,则在第X+0次,第X+1次,...,第X+P-1次打印中对应的起始位置分别为:S x,S x+1,…,S X+P-1,则每次打印的所述新增覆盖范围为:[S x+H-h x,S x+H],,所述第一喷嘴的打印位置分别为:S x+W,S x+1+W,…,S X+P-1+W,若所述第一喷嘴在所述打印介质上的打印位置位于对应的所述新增覆盖范围外,则不存储第一映射关系;若所述第一喷嘴在所述打印介质上的打印位置位于对应的所述新增覆盖范围内,且不与已存储的第一映射关系重复,则存储所述第一映射关系,所述第一映射关系包括对应的打印索引,第一喷嘴在打印介质上对应的打印位置,并取出所述第一喷嘴的所述第一数据。
- 根据权利要求4所述的喷墨打印机喷嘴异常补偿方法,其特征在于,所述依据所述打印参数,获取所述补偿喷嘴在正常打印时所对应的第二数据,所述第二数据包括出墨数据和非出墨数据,确定所述第二数据中非出墨数据的地址,将所述第一数据对应写入所述非出墨数据的地址生成补偿数据,包括:当前为第X次打印时,逐一搜索所存储的第一映射关系,记其中一个映射关系对应的异常喷嘴为第二喷嘴,从所述第一映射关系中取出所述第二喷嘴在打印介质上的打印位置;若所述打印位置大于等于当前打印的起始位置,则所述第一映射关系有效,所述第二喷嘴的打印位置减去当前打印的起始位置的值,记为Z x,若Z x小于所述喷头高度H,则所述第二喷嘴对应的所述第一数据可补偿,根据所述喷头内的各喷嘴位置信息,若Z x位置对应的喷嘴为正常喷嘴,则Z x位置对应的喷嘴作为所述第二喷嘴的补偿喷嘴,记为第三喷嘴,将所述第二喷嘴的第一数据写入所述第三喷嘴对应的第二数据的非出墨数据地址,得到所述第三喷嘴的所述补偿数据,同时清除存储器中已写入所述第三喷嘴的对应所述第二喷嘴的相应的补偿掉的数据;对于所述第二喷嘴,在所述打印介质与所述喷头的相对位移增大过程中,可不断得到所述第二喷嘴对应的第三数据、第四数据…第K数据…,直到所述第二喷嘴的数据补偿写完或者所述第二喷嘴对应的第一映射关系已过时,所述第三数据是第二数据经补偿后的剩余待补偿数据、所述第四数据是所述第三数据经补偿后的剩余待补偿数据,所述第K数据是第K-1数据经补偿后的剩余待补偿数据,其中,4≤K≤P,K取整数。
- 根据权利要求2所述的喷墨打印机喷嘴异常补偿方法,其特征在于,所述获取打印参数,确定所述异常喷嘴对应的第一数据,依据所述异常喷嘴位置信息和所述打印参数,确定所述喷头中补偿所述异常喷嘴的第一数据对应的补偿喷嘴位置信息之前,所述方法还包括:获取打印参数,对所述打印参数对应的第一打印数据进行羽化处理得到第二打印数据;其中,所述第二打印数据包括所述第一数据和所述第二数据。
- 根据权利要求6所述的喷墨打印机喷嘴异常补偿方法,其特征在于,所述打印参数还包括第一羽化幅度,则所述获取打印参数,对所述打印参数对应的第一打印数据进行羽化处理得到第二打印数据包括:依据所述第一往复式扫描打印次数和所述第一羽化幅度,得到第二往复式扫描打印次数,所述第二往复式扫描打印次数大于所述第一往复式扫描打印次数;依据所述第二往复式扫描打印次数,对待打印的第一打印数据进行羽化处理得到第二打印数据,所述第二打印数据中的非出墨数据的数量大于所述第一打印数据中的非出墨数据的数量。
- 根据权利要求7所述的喷墨打印机喷嘴异常补偿方法,其特征在于,所述获取打印参数,确定所述异常喷嘴对应的第一数据,依据所述异常喷嘴位置信息和所述打印参数,确定所述喷头中补偿所述异常喷嘴的第一数据对应的补偿喷嘴位置信息,包括:若当前打印含有所述异常喷嘴,则记为第一异常喷嘴;依据所述打印参数以及当前对应在所述打印介质同一区域的覆盖次数,获取当前覆盖打印介质的送料距离和对所述第一异常喷嘴的补偿范围,建立所述第一异常喷嘴的位置、所述第一异常喷嘴在打印介质上的打印位置以及所述第一异常喷嘴对应的所述第一数据之间的第二映射关系;若所述第一异常喷嘴在打印介质上的打印位置在所述喷头当前的打印范围外,则不存储所述第二映射关系;若所述第一异常喷嘴在打印介质上的打印位置在所述喷头当前的打印范围内,则存储所述第二映射关系,并备份所述第一数据。
- 根据权利要求8所述的喷墨打印机喷嘴异常补偿方法,其特征在于,所述依据所述打印参数,获取所述补偿喷嘴在正常打印时所对应的第二数据,所述第二打印数据包括出墨数据和非出墨数据,确定所述第二数据中非出墨数据的地址,将所述第一数据对应写入所述非出墨数据的地址生成补偿数据,包括:搜索存储的所述第二映射关系中,在覆盖当前打印介质的打印范围内,是否有所述第一异常喷嘴外的异常喷嘴对应的打印位置在所述打印范围内;若有,记为第二异常喷嘴,并根据所述第二映射关系获取所述第二异常喷嘴在所述打印介质上相对应的打印位置信息,计算出覆盖当前打印介质的打印范围内所能进行补偿的补偿喷嘴,将所述第二映射关系中备份的所述第二异常喷嘴的打印数据写入所述补偿喷嘴的非出墨数据地址生成补偿数据。
- 根据权利要求6所述的喷墨打印机喷嘴异常补偿方法,其特征在于,所述打印参数还包括:第二羽化幅度,所述第一往复式扫描打印次数为1,则所述获取打印参数,对所述打印参数对应的第一打印数据进行羽化处理得到第二打印数据包括:依据所述第二羽化幅度及所述喷嘴数量,确定打印重叠区域;对所述打印重叠区域对应的第一打印数据进行羽化处理得到第二打印数据。
- 根据权利要求10所述的喷墨打印机喷嘴异常补偿方法,其特征在于,所述方法包括:定义所述异常喷嘴与在所述喷头与打印介质的相对位移增大的方向上的第一个喷嘴之间相距的距离为T,所述喷嘴数量为x1,所述相对位移为x2,所述打印重叠区域对应的喷嘴数量为r,若T小于等于r,则所述补偿喷嘴与所述第一个喷嘴相距距离为Y:Y=T+x2对于第m次打印,所述第m次打印对应的第二打印数据中获取所述异常喷嘴对应的第一数据,依据所述补偿喷嘴位置信息,从第m-1次打印对应的第二打印数据中获取补偿喷嘴对应的第二数据,将所述第一数据对应写入第二数据中的所述非出墨数据地址,生成补偿数据;若T大于等于x2,则所述补偿喷嘴与在所述喷头与打印介质的相对位移增大的方向上的所述第一个喷嘴之间相距距离为Y:Y=T-x2对于第m次打印,所述第m次打印对应的第二打印数据中获取所述异常喷嘴对应的第一数据,依据所述补偿喷嘴位置信息,从第m+1次打印对应的第二打印数据中获取补偿喷嘴对应的第二数据,将所述第一数据对应写入第二数据中的所述非出墨数据地址,生成补偿数据。
- 根据权利要求6所述的喷墨打印机喷嘴异常补偿方法,其特征在于,所述打印参数进一步包括:相邻的两个喷头的重叠喷嘴区域的第一喷嘴数量、单个喷头的第二喷嘴数量。
- 根据权利要求12所述的喷墨打印机喷嘴异常补偿方法,其特征在于,则获取打印参数,对所述打印参数对应的第一打印数据进行羽化处理得到第二打印数据包括:依据所述重叠喷嘴区域对应的第一打印数据,获取羽化模板对应的羽化数据及所述羽化数据的互补羽化数据,将所述第一打印数据与所述羽化数据做与运算,得到第一羽化数据,所述第一打印数据和所述互补羽化数据做与运算,得到第二羽化数据,所述第一羽化数据和第二羽化数据组成所述第二打印数据。
- 根据权利要求13所述的喷墨打印机喷嘴异常补偿方法,其特征在于,所述互补羽化数据通过以下公式获得:P‘=E-P其中,E为单位矩阵对应的数据,所述单位矩阵中的元素都为1,P‘为所述互补羽化数据,P为所述羽化数据。
- 权利要求14所述的喷墨打印机喷嘴异常补偿方法,其特征在于,所述方法包括:定义喷头数量为n,对于第m个喷头,当m=1时,第1个喷头有1个所述重叠喷嘴区域记为第一重叠喷嘴区域,所述第1喷头还包括第一非重叠喷嘴区域,所述第一重叠喷嘴区域对应的喷嘴数量记为第一重叠喷嘴数量,所述第一非重叠喷嘴区域对应的喷嘴数量记为第一非重叠喷嘴数量;当1<m<n时,第m个喷头有2个所述重叠喷嘴区域分别记为第二重叠喷嘴区域和第三重叠喷嘴区域,第m个喷头的还包括第二非重叠喷嘴区域,所述第二重叠喷嘴区域对应的喷嘴数量记为第二重叠喷嘴数量,所述第三重叠喷嘴区域对应的喷嘴数量记为第三重叠喷嘴数量;对于第m个喷头中的第X个异常喷嘴,X为大于零的整数,当异常喷嘴编号X小于等于第m个喷头的所述第二重叠喷嘴数时,补偿异常喷嘴对应的打印数据的补偿喷嘴位于第m-1个喷头中,则所述补偿喷嘴编号通过以下公式获得:Y=X+D+Z其中,Y为所述补偿喷嘴编号,X为所述异常喷嘴编号,D为第m-1个喷嘴的所述第二非重叠喷嘴数,Z为第m-1个喷嘴的所述第二重叠喷嘴数;当所述异常喷嘴编号X大于等于第m个喷头的所述第二重叠喷嘴数与所述第二非重叠喷嘴数和时,补偿异常喷嘴对应的打印数据的补偿喷嘴位于第m+1个喷头中,所述补偿喷嘴编号通过以下公式获得:Y=X-T-U其中,Y为所述补偿喷嘴编号,X为所述异常喷嘴编号,T为第m喷头的所述第二非重叠喷嘴数,U为第m个喷头的所述第二重叠喷嘴数。
- 根据权利要求1所述的喷墨打印机喷嘴异常补偿方法,其特征在于,所述确定喷头中异常喷嘴位置信息包括:获取喷嘴的排布信息,依据所述喷嘴排布信息生成参考喷嘴状态图;获取参考喷嘴状态图对应的参考图像数据,依据所述参考图像数据控制所述喷头在打印介质上喷墨得到实际喷嘴状态图;依据所述实际喷嘴状态图和所述参考喷嘴状态图,确定所述喷头中异常喷嘴位置。
- 根据权利要求1所述的喷墨打印机喷嘴异常补偿方法,其特征在于,所述获取打印参数,确定所述异常喷嘴对应的第一数据,依据所述异常喷嘴位置信息和所述打印参数,确定所述喷头中补偿所述异常喷嘴的第一数据对应的补偿喷嘴位置信息之前,所述方法还包括:依据所述异常喷嘴位置信息,确定所述第一数据的打印数据地址,将非出墨数据写入所述第一数据对应的打印数据地址。
- 根据权利要求1所述的喷墨打印机喷嘴异常补偿方法,其特征在于,所述确定喷头中异常喷嘴位置信息包括:发送第一检测信号,控制所述喷头的每个喷嘴喷墨并得到所述第一检测信号经过每个所述喷嘴的预定喷射轨迹后对应各喷嘴的第一反馈信号,所述预定喷射轨迹为所述喷嘴正常时喷射墨滴的运动轨迹;发送第二检测信号,控制所述喷头的每个喷嘴喷墨并得到所述第二检测信号经过每个所述喷嘴的所述预定喷射轨迹后对应各喷嘴的第二反馈信号;依据每个所述喷嘴的所述第一反馈信号和所述第二反馈信号,确定所述喷头中的异常喷嘴位置信息。
- 一种喷墨打印机喷嘴异常补偿装置,其特征在于,所述装置包括:异常喷嘴位置确定模块,用于确定喷头中异常喷嘴位置信息;补偿喷嘴位置确定模块,用于获取打印参数,确定所述异常喷嘴对应的第一数据,依据所述异常喷嘴位置信息和所述打印参数,确定所述喷头中补偿所述异常喷嘴的第一数据对应的补偿喷嘴位置信息;补偿数据生成模块,用于依据所述打印参数,获取所述补偿喷嘴在正常打印时所对应的第二数据,所述第二数据包括出墨数据和非出墨数据,确定所述第二数据中非出墨数据的地址,将所述第一数据对应写入所述非出墨数据的地址生成补偿数据。
- 一种喷墨打印机,其特征在于,包括:控制单元、喷头单元和喷嘴补偿单元,所述控制单元控制所述喷嘴补偿单元对所述喷头单元内的异常喷嘴进行补偿,其中,所述喷嘴补偿单元为权利要求19所述的喷墨打印机喷嘴异常补偿装置。
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