Printer color register method and related equipment thereof

Abstract

The invention belongs to the technical field of printing equipment, solves the problem of inaccurate color register of printing equipment in the prior art, and provides a printer color register method and related equipment thereof.The method comprises the steps that printer nozzles are divided into a plurality of groups according to a preset rule, and each group is provided with at least one encoder; respectively recording speed information of the printing medium at each encoder setting position on the conveying line; and the position information of the ink jet area of each nozzle is acquired, and the working time of each nozzle of different nozzle groups is calculated according to the speed information of the printing medium and the position information of the ink jet area, so that accurate color register is realized. The nozzles of the printing equipment are grouped, and each group is provided with one encoder for calculating the working time of each nozzle in the group, so that the working time of each nozzle in the group can be accurately calculated, and accurate color register of a printing medium is realized under the condition that the printing medium moves at a high speed.

Description

Technical Field

[0001] The invention relates to the field of printing equipment, and in particular to a printer color matching method and related equipment. Background Art

[0002] Automatic labeling machines are devices that use adhesives to stick paper or metal foil labels on specified products. They are an essential part of modern packaging. Industrial label printers can run at high speeds and print more than 300 labels per minute.

[0003] In the prior art, there are multiple groups of nozzles distributed in sequence on the paper conveyor of the industrial label printer, such as a white ink nozzle group, a varnish nozzle group, a cyan nozzle group, a magenta nozzle group, a yellow nozzle group and a black nozzle group. A printing pattern requires multiple nozzle groups to spray ink in sequence to complete the printing. Since the printing medium often requires CMYK four-color printing, there are many nozzle groups, and the printing medium moves at high speed, the coordination requirements between the nozzle groups are very high. In the prior art, due to the errors in the coordination between the nozzle groups, the nozzle groups spray ink on the printing medium too fast or too slow, resulting in inaccurate color registration of the printing medium and errors in the color of the printed pattern. What's worse, it will produce Figure 1 The wind ripple phenomenon shown. Summary of the invention

[0004] In view of this, an embodiment of the present invention provides a printer color registration method and related equipment to solve the problem of inaccurate color registration of printing media and color errors of printed patterns in the prior art.

[0005] In a first aspect, an embodiment of the present invention provides a printer color matching method, characterized in that the method comprises:

[0006] The printer heads are divided into several groups according to a preset rule, and each group is provided with at least one encoder;

[0007] Respectively recording speed information of the printing medium at each location where the encoder is set on the transmission line;

[0008] The position information of the inkjet area of ​​each nozzle is obtained respectively, and the working time of each nozzle of different nozzle groups is calculated according to the speed information of the printing medium and the position information of the inkjet area to achieve accurate color registration.

[0009] Preferably, the nozzle group includes a nozzle group, and the nozzle group includes at least one nozzle, characterized in that the steps of respectively acquiring the position information of the inkjet area of ​​each nozzle, and calculating the working time of each nozzle of different nozzle groups according to the speed information of the printing medium and the position information of the inkjet area to achieve accurate color registration include:

[0010] Acquire the position information of the inkjet area of ​​each nozzle in the nozzle group, and calculate the transmission spacing information of each inkjet area;

[0011] The working delay of each nozzle in the nozzle group is generated according to the first speed information of the printing medium and each of the transmission interval information, wherein the first speed information is the moving speed information of the printing medium collected by the first encoder.

[0012] Preferably, the nozzle group includes at least the nozzle group one and the nozzle group two, and the printing medium passes through the nozzle group one and the nozzle group two in sequence. It is characterized in that the step of respectively acquiring the position information of the inkjet area of ​​each nozzle, and calculating the working time of each nozzle of different nozzle groups according to the speed information of the printing medium and the position information of the inkjet area to achieve accurate color registration includes:

[0013] Acquire first position information of the inkjet area at the end of the first nozzle group and second position information of the inkjet area at the front end of the second nozzle group, and calculate the nozzle group transmission spacing information of the first nozzle group and the second nozzle group according to the first position information and the second position information;

[0014] Generate a nozzle group delay according to the second speed information and the nozzle group transmission spacing information, wherein the second speed information is the moving speed information of the printing medium collected by the second encoder, and the second encoder acts on the second nozzle group;

[0015] The working delay of each nozzle in the second nozzle group is calculated according to the working time of the first nozzle group, the delay of the nozzle group, the spacing information of the working areas of each nozzle in the second nozzle group, and the second speed information.

[0016] Preferably, the nozzle group includes a plurality of nozzle groups, and the step of respectively acquiring the position information of the inkjet area of ​​each nozzle, and calculating the working time of each nozzle of different nozzle groups according to the speed information of the printing medium and the position information of the inkjet area to achieve accurate color registration includes:

[0017] The working time of each nozzle in the next nozzle group is calculated according to the working time of each nozzle in the previous nozzle group, and the above steps are executed repeatedly until the working time of the nozzles in all nozzle groups is calculated.

[0018] In a second aspect, an embodiment of the present invention further provides a printing device, applying the above-mentioned printer color matching method, including:

[0019] Printhead, used for inkjet printing;

[0020] A driving member, used for driving the printing medium to move;

[0021] A plurality of encoders are used to collect the rotation speed of the driving member so as to calculate the working time of each of the nozzles in each nozzle group.

[0022] Preferably, the driving member comprises a plurality of rotating rollers, and the rotating rollers comprise a driving rotating roller and a driven rotating roller;

[0023] The encoder is arranged on the active rotating roller and / or the driven rotating roller.

[0024] Preferably, the nozzles of the printer device are divided into nozzle group one and nozzle group two, characterized in that the encoder includes a first encoder and a second encoder;

[0025] The plurality of rotating rollers are arranged in sequence to form a transmission line for the printing medium, and the transmission line is arranged in an arc shape;

[0026] The nozzles of the first nozzle group are arranged at one end of the transmission line, and the nozzles of the second nozzle group are arranged at an end away from the first nozzle group, wherein the first encoder is used to detect the moving speed of the printing medium in the inkjet area of ​​the first nozzle group, and the second encoder is used to detect the moving speed of the printing medium in the inkjet area of ​​the second nozzle group.

[0027] Preferably, the nozzles of the printer device are divided into nozzle group one and nozzle group two, and the encoder includes a first encoder and a second encoder;

[0028] The plurality of rotating rollers are arranged in sequence to form a transmission line for the printing medium, and the transmission line is arranged in an arc-shaped concave shape;

[0029] The nozzles of the first nozzle group are arranged at one end of the transmission line, and the nozzles of the second nozzle group are arranged at an end away from the first nozzle group, wherein the first encoder is used to detect the moving speed of the printing medium in the inkjet area of ​​the first nozzle group, and the second encoder is used to detect the moving speed of the printing medium in the inkjet area of ​​the second nozzle group.

[0030] Preferably, the encoder includes contact type and non-contact type.

[0031] In a third aspect, an embodiment of the present invention further provides a storage medium having computer program instructions stored thereon, which implement the method described in the first aspect when the computer program instructions are executed by a processor.

[0032] In summary, the beneficial effects of the present invention are as follows:

[0033] The printer color registration method and related equipment provided by the embodiment of the present invention can accurately calculate the working time of each nozzle in the group by grouping the nozzles of the printing device, and realize accurate color registration of the printing medium when the printing medium moves at high speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings required for use in the embodiment of the present invention will be briefly introduced below. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work, and these are all within the protection scope of the present invention.

[0035] Figure 1 It is a schematic diagram of the prior art.

[0036] Figure 2 It is a first structural schematic diagram of a printing device according to an embodiment of the present invention.

[0037] Figure 3 It is a schematic diagram of a first process flow of a printer color matching method according to an embodiment of the present invention.

[0038] Figure 4 Schematic diagram of a method for calculating the working time of a nozzle group according to an embodiment of the present invention.

[0039] Figure 5 It is a second structural schematic diagram of the printing device according to an embodiment of the present invention.

[0040] Figure 6 It is a third structural schematic diagram of the printing device according to the embodiment of the present invention.

[0041] Figure 7 It is a fourth structural schematic diagram of the printing device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and Examples. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0044] See also Figure 2 and 3 , an embodiment of the present invention provides a printer color matching method, the method comprising:

[0045] S1: Divide the printer heads into several groups according to a preset rule, and set at least one encoder in each group;

[0046] S2: respectively recording the speed information of the printing medium at each encoder setting position on the transmission line;

[0047] S3: respectively obtaining the position information of the inkjet area of ​​each nozzle 1, and calculating the working time of each nozzle 1 of different nozzle groups according to the speed information of the printing medium and the position information of the inkjet area to achieve accurate color registration.

[0048] In the embodiment of the present invention, refer to Figure 2 , is a printing device of the present invention, comprising a nozzle 1 for inkjet printing, a driving member 2 for driving a printing medium, and an encoder 3 for collecting the rotation speed of the driving member to calculate the working time of each nozzle in each nozzle group. The nozzles of the embodiment of the present invention include but are not limited to a cyan nozzle for spraying cyan ink, a red nozzle for spraying magenta ink, a yellow nozzle for spraying yellow ink, a black nozzle for spraying black ink, a varnish nozzle for spraying varnish, and a spot color nozzle for spraying spot color ink (such as white). Exemplarily, a printing device including a cyan nozzle, a red nozzle, a yellow nozzle and a black nozzle is taken as an example. The nozzles of the printer are divided into several groups according to preset rules, and at least one encoder 3 is set in each group. The same printing area of ​​the printing medium needs to be sprayed by the cyan nozzle, the red nozzle, the yellow nozzle and the black nozzle in sequence to complete the color registration. The preset rules include grouping the nozzles according to the order of the nozzles on the printing medium transmission line, such as Figure 2As shown, the cyan nozzle and the red nozzle are divided into nozzle group one, and the yellow nozzle and the black nozzle are divided into nozzle group two. Nozzle group one is provided with a first encoder 31 for calculating the working time of the cyan nozzle and the red nozzle, and nozzle group two is provided with a second encoder 32 for calculating the working time of the yellow nozzle and the black nozzle, wherein the first encoder 31 and the second encoder 32 are arranged on the transmission line of the printing medium (i.e., installed on a rotating roller). The first encoder 31 and the second encoder 32 respectively record the speed information of the printing medium at a specified position on the transmission line, and the function of the encoder 3 is to convert the angular displacement or linear displacement of the printing medium at the location where the encoder is set on the transmission line into an electrical signal, thereby obtaining the speed information of the printing medium at the location where the encoder is set on the transmission line. As shown Figure 2 As shown, each nozzle 1 is fixedly installed at a designated position of the printing device, and the inkjet area is the inkjet range of each nozzle 1 on the printing medium transmission line. Since the nozzle 1 is installed at a fixed position, the control board of the printing device can obtain the position information of the inkjet area of ​​each nozzle 1 in advance, and calculate the spacing information of each inkjet area in the nozzle group. Since the speed of the printing medium is known, the working time of each nozzle 1 can be calculated. The printing medium is in the nozzle group according to the working time of different nozzles 1, and different nozzles 1 successively perform color registration on the same area of ​​the printing medium. In summary, by grouping the nozzles 1 of the printing device, each group is provided with an encoder for calculating the working time of each nozzle 1 in the group, the working time of each nozzle 1 in the group can be accurately calculated, and the accurate color registration of the printing medium can be achieved when the printing medium moves at a high speed.

[0049] Reference Figure 4 , respectively obtaining the position information of the inkjet area of ​​each nozzle 1, and calculating the working time of each nozzle 1 of different nozzle groups according to the speed information of the printing medium and the position information of the inkjet area to achieve accurate color registration step S3 includes:

[0050] S31: acquiring the position information of the inkjet area of ​​each nozzle in the nozzle group, and calculating the transmission spacing information of each inkjet area;

[0051] S32: Generate a working delay of each nozzle in the nozzle group according to the first speed information of the printing medium and each of the transmission interval information, wherein the first speed information is the moving speed information of the printing medium collected by the first encoder.

[0052] In the embodiment of the present invention, a nozzle group includes a cyan nozzle and a red nozzle, and the first encoder 31 is set on the active rotating roller. The transmission distance between the first encoder 31 and the inkjet area of ​​the cyan nozzle is S1, and the transmission distance between the inkjet area of ​​the cyan nozzle and the red nozzle is S2, wherein S1 is the transmission distance between the starting point of the inkjet area of ​​the cyan nozzle and the starting point of the transmission line, and S2 is the transmission distance between the starting point of the inkjet area of ​​the red nozzle and the starting point of the inkjet area of ​​the cyan nozzle. Since the printing medium moves at a fast speed and the intervals S1 and S2 are short, it can be considered that the moving speed of the printing medium at S1 and S2 is close to the printing medium moving speed V1 collected by the first encoder 31. Therefore, the inkjet time T of the cyan nozzle C =S1 / V1; the inkjet time of the red nozzle is T M =S1 / V1+S2 / V1. For example, label A is printed on the printing medium, and after a time T C , the cyan nozzle starts to spray ink, after a period of time T M The red nozzle starts to spray ink, achieving accurate color registration of the print medium within a group of nozzles.

[0053] Reference Figure 4 The nozzle group at least includes the nozzle group one and the nozzle group two, the printing medium passes through the nozzle group one and the nozzle group two in sequence, the position information of the inkjet area of ​​each nozzle is obtained respectively, and the working time of each nozzle 1 of different nozzle groups is calculated according to the speed information of the printing medium and the position information of the inkjet area to achieve accurate color registration step S3, including:

[0054] S3A: Acquire first position information of the inkjet area at the end of the first nozzle group and second position information of the inkjet area at the front end of the second nozzle group, and calculate nozzle group spacing information of the first nozzle group and the second nozzle group according to the first position information and the second position information;

[0055] S3B: generating a nozzle group delay according to the second speed information and the nozzle group transmission spacing information, wherein the second speed information is the moving speed information of the printing medium collected by the second encoder, and the second encoder acts on the second nozzle group;

[0056] S3C: Calculate the working delay of each nozzle in the second nozzle group according to the working time of the first nozzle group, the delay of the nozzle group, the spacing information of the working areas of each nozzle in the second nozzle group, and the second speed information.

[0057] In the embodiment of the present invention, the present invention does not limit the number of nozzle groups, and the nozzle group may include multiple nozzle groups. In the present embodiment, the nozzle group of the printing device includes nozzle group one and nozzle group two, nozzle group one includes cyan nozzle and red nozzle, and nozzle group two includes yellow nozzle and black nozzle. The pattern of the printing medium, such as a label, needs to pass through the cyan nozzle, red nozzle, yellow nozzle and black nozzle in sequence to complete the printing. The first position information of the inkjet area at the end of nozzle group one and the second position information of the inkjet area at the front end of nozzle group two are obtained, and the nozzle spacing information of nozzle group one and nozzle group two is calculated based on the first position information and the second position information. Refer to Figure 4 In this embodiment, the position information of the inkjet area of ​​the red nozzle and the yellow nozzle is obtained respectively. Based on the position information of the two, the distance S3 between nozzle group 1 and nozzle group 2 on the printing medium transmission route is calculated, where S3 is the transmission distance between the starting point of the red nozzle inkjet area and the starting point of the yellow nozzle inkjet area. The second encoder 32 is set on the rotating roller closer to the yellow nozzle inkjet area, and is used to collect the speed information of the printing medium when passing through the inkjet area of ​​the yellow nozzle, that is, the second speed V2. Therefore, the nozzle group delay T 延时 =S3 / V2, so the yellow nozzle inkjet time is T Y =S1 / V1+S2 / V1+S3 / V2. Since the print medium moves fast and the inkjet areas of the yellow and black nozzles are close, it can be considered that the speed of the print medium passing through the inkjet area of ​​the black nozzle is close to V2. The transmission distance between the inkjet area of ​​the black nozzle and the inkjet area of ​​the yellow nozzle is S4. Therefore, the inkjet time of the black nozzle is T K =S1 / V1+S2 / V1+S3 / V2+S4 / V2. For example, taking printing a label pattern as an example, the pattern passes through T during the movement of the printing medium. C At time T, the cyan printhead prints in the label area; M At time T, the red nozzle prints in the label area; Y At this moment, the yellow nozzle prints in the label area, and after T K At that moment, the black nozzle is printing in the label area. Through the encoder close to the nozzle group, the moving speed of the printing medium in the working nozzle group is collected in real time, so as to accurately calculate the working delay of the nozzle and complete the precise color registration.

[0058] In other embodiments of the present invention, multiple labels need to be printed on the printing medium, and the distance between label 1 and label 2 is S0, so the inkjet time interval between label 1 and label 2 is T=S0 / V1. Therefore, the time for cyan inkjet printing label 2 is T C =S1 / V1+T; the time for the red nozzle to print label 2 is T M =S1 / V1+S2 / V1+T; the time for the yellow nozzle to print label 2 is T Y=S1 / V1+S2 / V1+S3 / V2+T, the time for the black nozzle to print label 3 is T K =S1 / V1+S2 / V1+S3 / V2+S4 / V2+T. Similarly, the time for cyan inkjet printing label n is T C =S1 / V1+(n-1)T; the time for the red nozzle to print label n is T M =S1 / V1+S2 / V1+(n-1)T; the time for the yellow nozzle to print label n is T Y =S1 / V1+S2 / V1+S3 / V2+(n-1)T, the time for the black nozzle to print label n is T K =S1 / V1+S2 / V1+S3 / V2+S4 / V2+(n-1)T.

[0059] Furthermore, the nozzle group includes a plurality of nozzle groups, and the step S3 of respectively acquiring the position information of the inkjet area of ​​each nozzle, and calculating the working time of each nozzle of different nozzle groups according to the speed information of the printing medium and the position information of the inkjet area to achieve accurate color registration includes:

[0060] S3a: Calculate the working time of each nozzle in the next nozzle group according to the working time of each nozzle in the previous nozzle group, and repeat the above steps until the working time of the nozzles in all nozzle groups is calculated.

[0061] In the embodiment of the present invention, the printing device exemplarily includes cyan nozzles, red nozzles, yellow nozzles and black nozzles. The nozzles are grouped according to color, cyan nozzles are grouped into nozzle group 1, red nozzles are grouped into nozzle group 2, yellow nozzles are grouped into nozzle group 3, and black nozzles are grouped into nozzle group 4, and each group is provided with an encoder 3. The cyan nozzle inkjet time T C = S1 / V1, where S1 is the transmission distance between the starting position of the transmission line and the starting point of the cyan nozzle inkjet area, and V1 is the moving speed of the printing medium collected by the encoder 3 of the nozzle group. Red nozzle inkjet time T M =S1 / V1+S2 / V2, where S2 is the transmission distance between the starting point of the cyan nozzle inkjet area and the starting point of the red nozzle inkjet area, V2 is the moving speed of the printing medium collected by the encoder 3 of the second nozzle group; the yellow nozzle inkjet time T Y =S1 / V1+S2 / V2+S3 / V3, where S3 is the transmission distance between the starting point of the red nozzle inkjet area and the starting point of the yellow nozzle inkjet area, and V3 is the moving speed of the printing medium collected by the encoder 3 of the three nozzle groups; the black nozzle inkjet time T K=S1 / V1+S2 / V2+S3 / V3+S4 / V4, where S4 is the transmission distance between the starting point of the yellow nozzle inkjet area and the starting point of the black nozzle inkjet area, and V4 is the moving speed of the printing medium collected by the encoder 3 of the four nozzle groups. By setting multiple encoders, the speed of the printing medium before entering the inkjet area of ​​the nozzle group can be further obtained, so as to calculate a more accurate inkjet delay and further improve the accuracy of color registration.

[0062] Reference Figure 2 The present invention provides a printing device, using the above-mentioned printer color matching method, including:

[0063] Printhead 1, for inkjet printing;

[0064] A driving member 2, used for driving the printing medium to move;

[0065] A plurality of encoders 3 are used to collect the rotation speed of the driving member 2 so as to calculate the working time of each of the nozzles 1 in each nozzle group.

[0066] In an embodiment of the present invention, the printing device is provided with four nozzles 1 to realize four-color printing. The driving member 2 includes an active rotating roller and a driven rotating roller. The function of the driving member 2 is to drive the printing medium to move, such as driving the printing medium such as paper and textile cloth to move. For example, the driving members 2 at both ends of the transmission line are active rotating rollers, which play the role of pulling the printing medium. In addition, the printing device is also provided with a plurality of encoders 3 for collecting the rotation speed of the active rotating roller or the driven rotating roller, so as to obtain the moving speed of the printing medium at the location where the encoder 3 is set, which is used to calculate the working time of each nozzle 1 in each nozzle group.

[0067] Exemplarily, the nozzle group of the printing device includes nozzle group 1 and nozzle group 2, nozzle group 1 includes cyan nozzle and red nozzle, and nozzle group 2 includes yellow nozzle and black nozzle. The pattern of the printing medium, such as a label, needs to pass through the cyan nozzle, red nozzle, yellow nozzle and black nozzle in sequence to complete the printing. The first position information of the inkjet area at the end of nozzle group 1 and the second position information of the inkjet area at the front end of nozzle group 2 are obtained, and the nozzle spacing information of nozzle group 1 and nozzle group 2 is calculated based on the first position information and the second position information. Figure 4 In this embodiment, the position information of the inkjet area of ​​the red nozzle and the yellow nozzle is obtained respectively. Based on the position information of the two, the distance S3 between nozzle group 1 and nozzle group 2 on the printing medium transmission route is calculated, where S3 is the transmission distance between the starting point of the red nozzle inkjet area and the starting point of the yellow nozzle inkjet area. The second encoder 32 is set on the rotating roller closer to the yellow nozzle inkjet area, and is used to collect the speed information of the printing medium when passing through the inkjet area of ​​the yellow nozzle, that is, the second speed V2. Therefore, the nozzle group delay T 延时=S3 / V2, so the yellow nozzle inkjet time is T Y =S1 / V1+S2 / V1+S3 / V2. Since the print medium moves fast and the inkjet areas of the yellow and black nozzles are close, it can be considered that the speed of the print medium passing through the inkjet area of ​​the black nozzle is close to V2. The transmission distance between the inkjet area of ​​the black nozzle and the inkjet area of ​​the yellow nozzle is S4. Therefore, the inkjet time of the black nozzle is T K =S1 / V1+S2 / V1+S3 / V2+S4 / V2. For example, taking printing a label pattern as an example, the pattern passes through T during the movement of the printing medium. C At time T, the cyan printhead prints in the label area; M At time T, the red nozzle prints in the label area; Y At this moment, the yellow nozzle prints in the label area, and after T K At that moment, the black nozzle is printing in the label area. Through the encoder close to the nozzle group, the moving speed of the printing medium in the working nozzle group is collected in real time, so as to accurately calculate the working delay of the nozzle and complete the precise color registration.

[0068] In other embodiments of the present invention, multiple labels need to be printed on the printing medium, and the distance between label 1 and label 2 is S0, so the inkjet time interval between label 1 and label 2 is T=S0 / V1. Therefore, the time for cyan inkjet printing label 2 is T C =S1 / V1+T; the time for the red nozzle to print label 2 is T M =S1 / V1+S2 / V1+T; the time for the yellow nozzle to print label 2 is T Y =S1 / V1+S2 / V1+S3 / V2+T, the time for the black nozzle to print label 3 is T K =S1 / V1+S2 / V1+S3 / V2+S4 / V2+T. Similarly, the time for cyan inkjet printing label n is T C =S1 / V1+(n-1)T; the time for the red nozzle to print label n is T M =S1 / V1+S2 / V1+(n-1)T; the time for the yellow nozzle to print label n is T Y =S1 / V1+S2 / V1+S3 / V2+(n-1)T, the time for the black nozzle to print label n is T K =S1 / V1+S2 / V1+S3 / V2+S4 / V2+(n-1)T.

[0069] Reference Figure 2 and 5 , the nozzles of the printer device are divided into nozzle group one and nozzle group two, and the encoder 3 includes a first encoder 31 and a second encoder 32;

[0070] The plurality of rotating rollers are arranged in sequence to form a transmission line for the printing medium, and the transmission line is arranged in an arc shape;

[0071] The nozzle 1 of the nozzle group 1 is arranged at one end of the transmission line, and the nozzle 1 of the nozzle group 2 is arranged at an end away from the nozzle group 1, wherein the first encoder 31 is used to detect the moving speed of the printing medium in the inkjet area of ​​the nozzle group 1, and the second encoder 32 is used to detect the moving speed of the printing medium in the inkjet area of ​​the nozzle group 2.

[0072] In the embodiment of the present invention, the first group of nozzles includes a cyan nozzle and a red nozzle, and the second group of nozzles includes a yellow nozzle and a black nozzle. Figure 2 , the first encoder 31 is arranged on the rotating roller at the starting end of the transmission line, and the second encoder 32 is located between the first nozzle group and the second nozzle group, and is arranged on the rotating roller in the middle of the transmission line. Since the second encoder 32 is closer to the nozzle 1 at the front end of the second nozzle group, it can more accurately collect the speed of the printing medium when it moves to the inkjet area of ​​the nozzle 1 at the front end of the second nozzle group, thereby more accurately calculating the inkjet delay and improving the color registration accuracy of the nozzle at the front end of the second nozzle group. In another embodiment of the present invention, the first encoder 31 is arranged on the rotating roller at the starting end of the transmission line, and the second encoder 32 is arranged on the rotating roller at the end of the transmission line. Since the second encoder 32 is closer to the nozzle 1 at the end of the second nozzle group, it can more accurately collect the speed of the printing medium when it moves to the inkjet area of ​​the nozzle 1 at the front end of the second nozzle group, thereby more accurately calculating the inkjet delay and improving the color registration accuracy of the nozzle at the end of the second nozzle group.

[0073] Reference Figure 6 , the nozzles of the printer device are divided into nozzle group one and nozzle group two, and the encoder 3 includes a first encoder 31 and a second encoder 32;

[0074] The plurality of rotating rollers are arranged in sequence to form a transmission line for the printing medium, and the transmission line is arranged in an arc-shaped concave shape;

[0075] The nozzle 1 of the nozzle group 1 is arranged at one end of the transmission line, and the nozzle 1 of the nozzle group 2 is arranged at an end away from the nozzle group 1, wherein the first encoder 31 is used to detect the moving speed of the printing medium in the inkjet area of ​​the nozzle group 1, and the second encoder 32 is used to detect the moving speed of the printing medium in the inkjet area of ​​the nozzle group 2.

[0076] In the embodiment of the present invention, the first group of nozzles includes a cyan nozzle and a red nozzle, and the second group of nozzles includes a yellow nozzle and a black nozzle. Figure 6The printing medium transmission line is set in an arc-shaped concave shape, so that the printing medium fits the rotating roller more closely. The first encoder 31 is set on the rotating roller at the starting end of the transmission line, and the second encoder 32 is located between the first and second nozzle groups and is set on the rotating roller in the middle of the transmission line. Since the second encoder 32 is closer to the nozzle 1 at the front end of the second nozzle group, it can more accurately collect the speed of the printing medium when it moves to the inkjet area of ​​the second nozzle group, thereby more accurately calculating the inkjet delay and improving the color registration accuracy of the nozzle 1 of the second nozzle group.

[0077] Furthermore, the encoder 3 includes a contact type and a non-contact type.

[0078] In the embodiment of the present invention, the encoder 3 is rigidly connected to the rotating roller and rotates synchronously, thereby collecting the speed information of the printing medium. Alternatively, the encoder 3 does not contact the rotating roller and collects the speed information of the printing medium.

[0079] The printing device may include a processor and a memory storing computer program instructions.

[0080] Specifically, the processor may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present invention.

[0081] The memory may include a large capacity memory for data or instructions. By way of example and not limitation, the memory may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. Where appropriate, the memory may include a removable or non-removable (or fixed) medium. Where appropriate, the memory may be inside or outside a data processing device. In a particular embodiment, the memory is a non-volatile solid-state memory. In a particular embodiment, the memory includes a read-only memory (ROM). Where appropriate, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM) or a flash memory or a combination of two or more of these.

[0082] The processor implements any one of the printer color matching methods in the above embodiments by reading and executing computer program instructions stored in the memory.

[0083] In one example, the printing device may further include a communication interface and a bus. Figure 7As shown, the processor, memory, and communication interface are connected via a bus and communicate with each other.

[0084] The communication interface is mainly used to implement communication between the modules, devices, units and / or equipment in the embodiments of the present invention.

[0085] The bus includes hardware, software or both, and the parts of the printing device are coupled to each other. For example, but not limitation, the bus may include accelerated graphics port (AGP) or other graphics bus, enhanced industrial standard architecture (EISA) bus, front side bus (FSB), hypertransport (HT) interconnection, industrial standard architecture (ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations. In suitable cases, the bus may include one or more buses. Although the embodiment of the present invention describes and shows a specific bus, the present invention considers any suitable bus or interconnection.

[0086] In addition, in combination with the printer color matching method in the above embodiment, the embodiment of the present invention can provide a computer-readable storage medium for implementation. The computer-readable storage medium stores computer program instructions; when the computer program instructions are executed by a processor, any one of the printer color matching methods in the above embodiment is implemented.

[0087] In summary, the embodiments of the present invention provide a printer color matching method, a printing device, and a storage medium.

[0088] It should be clear that the present invention is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present invention.

[0089] The functional blocks shown in the above-described block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, etc. When implemented in software, the elements of the present invention are programs or code segments that are used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or a communication link by a data signal carried in a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0090] It should also be noted that the exemplary embodiments mentioned in the present invention describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiments, or in a different order from the embodiments, or several steps can be performed simultaneously.

[0091] The above is only a specific implementation of the present invention. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the system, module and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be covered within the protection scope of the present invention.

Claims

1. A printer color matching method, characterized in that: The method comprises: The printer heads are divided into several groups according to a preset rule, and each group is provided with at least one encoder; Respectively recording speed information of the printing medium at each location where the encoder is set on the transmission line; The position information of the inkjet area of ​​each nozzle is obtained respectively, and the working time of each nozzle of different nozzle groups is calculated according to the speed information of the printing medium and the position information of the inkjet area to achieve accurate color registration.

2. The printing color matching method according to claim 1, wherein the nozzle group comprises a nozzle group, wherein the nozzle group comprises at least one nozzle, wherein: The steps of respectively acquiring the position information of the inkjet area of ​​each nozzle, and calculating the working time of each nozzle of different nozzle groups according to the speed information of the printing medium and the position information of the inkjet area to achieve accurate color registration include: Acquire the position information of the inkjet area of ​​each nozzle in the nozzle group, and calculate the transmission spacing information of each inkjet area; The working delay of each nozzle in the nozzle group is generated according to the first speed information of the printing medium and each of the transmission interval information, wherein the first speed information is the moving speed information of the printing medium collected by the first encoder.

3. The printer color registration method according to claim 2, wherein the nozzle group comprises at least the nozzle group 1 and the nozzle group 2, and the printing medium passes through the nozzle group 1 and the nozzle group 2 in sequence, characterized in that: The step of respectively acquiring the position information of the inkjet area of ​​each nozzle, and calculating the working time of each nozzle of different nozzle groups according to the speed information of the printing medium and the position information of the inkjet area to achieve accurate color registration includes: Acquire first position information of the inkjet area at the end of the first nozzle group and second position information of the inkjet area at the front end of the second nozzle group, and calculate the nozzle group transmission spacing information of the first nozzle group and the second nozzle group according to the first position information and the second position information; Generate a nozzle group delay according to the second speed information and the nozzle group transmission spacing information, wherein the second speed information is the moving speed information of the printing medium collected by the second encoder, and the second encoder acts on the second nozzle group; The working delay of each nozzle in the second nozzle group is calculated according to the working time of the first nozzle group, the delay of the nozzle group, the spacing information of the working areas of each nozzle in the second nozzle group, and the second speed information.

4. The printer color matching method according to any one of claims 1 to 3, characterized in that: The nozzle group includes a plurality of nozzle groups, and the steps of respectively acquiring the position information of the inkjet area of ​​each nozzle, and calculating the working time of each nozzle of different nozzle groups according to the speed information of the printing medium and the position information of the inkjet area to achieve accurate color registration include: The working time of each nozzle in the next nozzle group is calculated according to the working time of each nozzle in the previous nozzle group, and the above steps are executed repeatedly until the working time of the nozzles in all nozzle groups is calculated.

5. A printing device, characterized in that: The printer color matching method according to any one of claims 1 to 4 comprises: Printhead, used for inkjet printing; A driving member, used for driving the printing medium to move; A plurality of encoders are used to collect the rotation speed of the driving member so as to calculate the working time of each of the nozzles in each nozzle group.

6. The printing device according to claim 4, characterized in that: The driving member includes a plurality of rotating rollers, and the rotating rollers include a driving rotating roller and a driven rotating roller; The encoder is arranged on the active rotating roller and / or the driven rotating roller.

7. The printing device according to claim 5, wherein the nozzles of the printing device are divided into nozzle group one and nozzle group two, characterized in that: The encoder includes a first encoder and a second encoder; The plurality of rotating rollers are arranged in sequence to form a transmission line for the printing medium, and the transmission line is arranged in an arc shape; The nozzles of the first nozzle group are arranged at one end of the transmission line, and the nozzles of the second nozzle group are arranged at an end away from the first nozzle group, wherein the first encoder is used to detect the moving speed of the printing medium in the inkjet area of ​​the first nozzle group, and the second encoder is used to detect the moving speed of the printing medium in the inkjet area of ​​the second nozzle group.

8. The printing device according to claim 5, characterized in that The nozzles of the printer device are divided into nozzle group one and nozzle group two, and the encoder includes a first encoder and a second encoder; The plurality of rotating rollers are arranged in sequence to form a transmission line for the printing medium, and the transmission line is arranged in an arc-shaped concave shape; The nozzles of the first nozzle group are arranged at one end of the transmission line, and the nozzles of the second nozzle group are arranged at an end away from the first nozzle group, wherein the first encoder is used to detect the moving speed of the printing medium in the inkjet area of ​​the first nozzle group, and the second encoder is used to detect the moving speed of the printing medium in the inkjet area of ​​the second nozzle group.

9. The printing device according to any one of claims 5 to 8, characterized in that: The encoder includes contact type and non-contact type.

10. A storage medium having computer program instructions stored thereon, characterized in that: When the computer program instructions are executed by a processor, the method according to any one of claims 1 to 4 is implemented.

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