Delivery of digital representations to nozzle groups

Abstract

A printing method is described in which first digital representation data and second digital representation data of a first digital representation and a second digital representation to be printed on a same side of a same medium are received. First print data corresponding to the print fluid for the first digital representation is determined based on the first digital representation data (121). Second print data (132) corresponding to the print fluid for the second digital representation is determined based on the second digital representation data. The method further includes transferring first print data corresponding to a particular scan strip (145) to the first set of nozzles and transferring second print data corresponding to the particular scan strip to the second set of nozzles, whereby the first set of nozzles and the second set of nozzles are non-intersecting nozzle sets from the same mold and are fluidly connected to the printing fluid.

Description

Background Art

[0001] The digital representation data may be processed by a controller of the printer into print data in order to control nozzles that eject printing fluid onto a print medium to produce a tangible printed representation of the digital representation data.

[0002] Processing of the representation data into print data may differ from printer to printer, for example in order to adapt such print data to a specific printer architecture or a specific set of printing fluids. BRIEF DESCRIPTION OF THE DRAWINGS

[0003] Figure 1 An example method is illustrated.

[0004] FIG. 2A to FIG. 2D An example mold is illustrated.

[0005] Figure 3 Another example method is illustrated.

[0006] Figure 4 Another example method is illustrated.

[0007] Figure 5 Another example method is illustrated.

[0008] Figure 6 Another example method is illustrated.

[0009] Figure 7 Another example method is illustrated.

[0010] Figure 8 Another example method is illustrated.

[0011] Fig. 9 An example printer and an example non-transitory machine-readable storage medium are illustrated.

[0012] Fig.10 Another example printer and example non-transitory machine-readable storage medium are illustrated.

[0013] Fig.11 Another example printer and example non-transitory machine-readable storage medium are illustrated.

[0014] Fig.12 Another example printer and example non-transitory machine-readable storage medium are illustrated.

[0015] Fig.13 Another example printer and example non-transitory machine-readable storage medium are illustrated. DETAILED DESCRIPTION

[0016] Although different digital representations or images can be printed independently of each other on corresponding different media surfaces, in some cases, different representations will be printed on the same media surface, specifically on the same side of the same media. The printing of such different representations on the same side of the same media can produce a desired visual effect. An example of such a desired visual effect can be obtained by printing different representations on the same side of the same transparent medium, thereby allowing the first representation to be visualized from one side of the medium and the second representation to be visualized from the other side of the medium, such second representation being located, for example, between the first representation and the transparent medium in this case. Another example of a desired visual effect can be obtained by printing different representations on the same side of the same translucent medium, whereby the change in the intensity of light transmitted through the medium makes one of these representations more or less obvious to the observer than another, thereby placing the medium between the observer and the light source transmitted through the medium. Another example can allow an aesthetic effect to be produced by optical interaction between different digital representations. Yet another example can allow print quality defects to be compensated by optical interaction between different digital representations. The ability to establish a function for printing different representations on the same side of the same medium forms the basis of the present disclosure.

[0017] As will be illustrated in greater detail in this disclosure, this capability can be established by using the same die ejecting the same printing fluid on the same side of the same media, doing so simultaneously with the same swath or pass for the first and second digital representations.

[0018] Figure 1 An example printing method 100 is illustrated. The printing method 100 includes receiving, in block 110, first digital representation data 111 and second digital representation data 112 of a first digital representation and a second digital representation to be printed on the same side of the same medium. Figure 1 and Figures 3 to 13 In the , some blocks are linked to diagrams that schematically illustrate the related blocks.

[0019] In some examples, the data may be received via a wired or wireless network interface included in the printer controller for receiving print job data. An example printer controller will be described in more detail below. In some examples, data may be provided and received locally, for example, via a connector integrated into the printer.

[0020] In the present disclosure, and unless otherwise indicated, the terms "first" and "second" as applied to numerical representations or to other features should be understood merely as labels assigned to the relevant features, e.g. similar to the numerical representations "A" and "B", without referring to a particular order (the two representations may, for example, be received one after the other in any order, or may be received partially or completely simultaneously).

[0021] Digitally represented digital representation data is to be understood as digital data, for example in the form of a data file, which corresponds to the graphical representation to be printed. Example data formats are PDF, EPS, JPG, TIFF, GIF, PNG or ZIP formats. Example digital representations are static images, photos, text, graphics or a mixture of these. The digital representation can be a two-dimensional (2D) or three-dimensional (3D) digital representation.

[0022] In some examples, receiving first digital representation data and second digital representation data of the first digital representation and the second digital representation includes receiving corresponding different data files, wherein the first digital representation corresponds to the first data file and the second digital representation corresponds to a second data file different from the first data file. Such different files can have different data formats, or can have the same data format.

[0023] The medium should be understood as a medium configured to receive a printing fluid in order to display a tangible representation of a digital representation. The medium on which printing is performed can take different forms, be made of different materials, and have different adhesion properties, porosity, roughness, or composition. In some examples, the medium is in the form of a flexible sheet. In some examples, the medium is in the form of a rigid board. The medium can be provided as a pre-cut sheet or roll. In some examples, the medium includes cellulose-based fibers, such as paper or cardboard. In some examples, the medium includes wood. In some examples, the medium includes textiles. In some examples, the medium can be a woven or non-woven textile medium. In some examples, the medium includes metal. In some examples, the medium includes glass. In some examples, the medium includes leather. For example, in some examples, the medium includes a plastic resin or a transparent plastic resin or a polymer, such as poly (methyl methacrylate) PMMA or polyvinyl chloride PVC. In some examples, the medium includes a mixture of these materials. The medium can be a laminate.

[0024] In some examples, the medium is a generally two-dimensional medium having a width, a length, and a thickness, the thickness being significantly less than both the width and the length, the thickness being, for example, less than 100 times the length or the width. In other examples, the medium may take a generally three-dimensional shape. In some examples, the print medium may be, for example, a 3D build material in powder form, wherein the print fluid may be a reactant or adhesive applied layer by layer to the 3D build material to form a tangible 3D object corresponding to the digital representation by melting or bonding of the 3D build material, in which example the digital representation is a 3D digital representation, and the same side of the medium corresponding to the layer 3D build material faces the nozzle when the nozzle ejects the print fluid. The build material itself may be deposited layer by layer by other mechanisms not described in detail herein.

[0025] Printing the first representation and the second representation on the same side of the same medium should be understood as at least a portion of the first representation and at least a portion of the second representation will overlap, superimpose or blend on the same surface portion of the medium. In the case of a generally two-dimensional medium having a width, a length and a thickness, the medium should be considered to include two sides separated by the thickness of the medium. In the case of a generally three-dimensional medium, there may be more than two sides for printing. One side of the medium other than the same side on which the first digital representation and the second digital representation are to be printed may be original or may carry, for example, another printed digital representation.

[0026] The printing method 100 includes determining, in block 120 , first printing data 121 corresponding to a first printing fluid for a first digital representation based on the first digital representation data 111 .

[0027] The digital representation data may be processed to obtain data or data pointers that, for example, cause an electrical control signal to be emitted, which allows the use of a nozzle of a print head to emit or eject a printing fluid onto a medium. The data may correspond to digital data of a stage in a different stage of a printing pipeline that is upstream or downstream of such a printing pipeline. The data may be one of the following: digital data corresponding to the resulting graphic representation to be printed, digital data after a rasterization process, digital data after a half-toning process, digital data after a masking process, or digital data of electronic signals of a piezoelectric or resistor-based ejection chamber that directly controls the nozzle of the print head. Print data according to the present disclosure is data derived from the digital representation data and corresponding to a specific printing fluid. Determining the print data corresponding to the printing fluid for digital representation based on the digital representation data may include one or more of a rasterization, half-toning, or masking process. In some examples, the digital representation data includes data that may be associated with a plurality of different colors, and the resulting print data will be limited, for example, to the printing fluid being black ink, so as to produce a black and white or grayscale printed representation of the multi-color digital representation data. In some examples, the digital representation data includes data associated with multiple different colors, and the resulting print data will be limited, for example, to the printing fluid being one of cyan ink, magenta ink, yellow ink, or black ink to produce a multi-color printed representation of the multi-color digital representation data. Figure 1 In , the star representation 121 corresponding to the print data is represented by a dashed line instead of a solid line representation 111 to illustrate that the print data may correspond to a color component (e.g., a cyan component) of a complete representation in some examples, and the complete representation is obtained by applying several different such color components (e.g., cyan, magenta, yellow, and black). It should be noted that in some examples, the complete representation (e.g., a black and white representation) can be obtained from a single printing fluid, in which case the print data 121 may look very similar or identical to the representation data 111. In some examples, the printing fluid is a colored ink. In some examples, the printing fluid is a latex-based ink that is particularly suitable for printing on different media and can be suitable for visual effects produced by exposure to external weather and changing lighting conditions. In other examples, the printing fluid can be a non-marking fluid, such as an overcoat, a fixer, a pre-treatment or post-treatment fluid, which can be transparent or translucent and is used to prepare a medium for receiving ink, or to fix ink to a medium.

[0028] The printing method 100 includes determining, in block 130, second printing data 132 for a second digital representation corresponding to a first printing fluid based on the second digital representation data. It should be understood that, although the first printing data and the second printing data relate to different digital representations, they are associated with the same printing fluid, for example, with the same color. This same printing fluid may, for example, be extracted from the same printing fluid reservoir. Alternatively, this same printing fluid may be extracted from different reservoirs, the same printing fluids from these different reservoirs having the same composition. Figure 1 In the representation of , the second print data 132 is illustrated as corresponding to a single printing fluid, ie a single component of the corresponding complete digital representation data 112, as explained in the context of the first print data 111 and 121.

[0029] The printing method 100 includes communicating first print data 121 corresponding to a particular scan swath 145 to a first set of nozzles 141 fluidly connected to a first printing fluid in block 140. The communication may include sending electronic signals through electronic circuitry connecting the nozzles to a printer controller.

[0030] A scanning swath (such as the illustrated scanning swath 145, illustrated as an area surrounded by a "dash-and-dot" line) should be understood as a stroke of a print head over a strip-shaped area of ​​a medium, during which the print head ejects printing fluid onto the medium through a print head nozzle. During a scanning swath, the print head of the printer may travel along a print head carriage axis 101, which carries the print head or is included in the print head, and as printing fluid is ejected, the medium remains stationary during the print head travel that produces the scanning swath. In some examples, the digital representation is produced by printing successive scanning swaths that are parallel to each other and to the direction of print head travel. In some examples, while the medium remains stationary during each scanning swath, the medium advances a media advance amount between successive scanning swaths so as to progressively print the complete digital representation. In some example printing modes, for example using a print head such as Figure 2B, such media advance amount is equal to the scan swath height, which corresponds to the width of the scan swath along the media advance direction 102, wherein a given position on the media surface facing the printhead will "see" one printhead stroke during the associated printing operation, and such a printing mode allows high printing speeds to be achieved. It should be noted that the media advance direction should be understood as, relatively speaking, the media advances while the printhead axis remains stationary, or the media remains stationary while the printhead axis moves in a direction opposite to the media advance direction, or a combination of both. In other example printing modes, the media advance amount is less than the scan swath height, wherein a given position on the media surface facing the printhead will "see" multiple printhead strokes during the associated printing operation, and such a so-called "multi-stroke" printing mode allows, for example, to achieve a desired print quality. In some examples, when the printhead reciprocates along the printhead carriage axis (such as axis 101) during printing, printing scan swaths occurs in the same direction, such as from left to right or from right to left, and the printhead reciprocates in a direction opposite to the same direction without printing. In some examples, printing scan swaths occur in two directions (e.g., both left to right and right to left) as the printhead reciprocates along a printhead carriage axis (e.g., axis 101) during printing. It should be noted that while the media advance direction 102 is illustrated as being substantially perpendicular to the printhead travel or scan axis 101, other non-zero angle configurations are contemplated.

[0031] In block 140, first print data 121 corresponding to a particular scan swath 145 is communicated to a first set of nozzles 141 fluidly connected to a first printing fluid. The first print data corresponding to a particular scan swath should generally be understood to correspond to a swath 161 that is a subset of the first digital representation, except that the entire first digital representation corresponding to the first printing fluid may be printed by the first set of nozzles in a single scan swath. Figure 1 In the illustrated example, although the first digital representation has a star shape, the illustrated scanning strip 145 causes the central portion 161 of the star shape to be printed. It should be understood that other portions of the star shape may have been previously printed, which are not illustrated here. It should be noted that the width printed by the first group of nozzles in a direction perpendicular to the print head travel direction 101 corresponds to the width of the first group of nozzles in this direction, whereby this width of the first group of nozzles corresponds at most to the scanning strip height. This width of the first group of nozzles can be considered to be the first group of scanning strip heights.

[0032] exist Figure 1, a first group of nozzles is illustrated as black disks included in region 143, which is surrounded by a "dash-dot" line that encloses the first group of nozzles and the resulting print corresponding to scan swath 145. This configuration is for illustrative purposes, and the example groups may, for example, include hundreds or thousands of nozzles per group. Figure 1 In the embodiment of the present invention, the first set of nozzles forms a single nozzle group positioned toward the first end of the mold carrying the nozzles. The mold will be discussed in more detail below. Other groupings or positions of the nozzles can be selected to form the first set of nozzles, as will be further discussed below.

[0033] The first group of nozzles is fluidly connected to a first printing fluid, whereby the first printing fluid may flow from a printing fluid reservoir through fluid channels or channels to the nozzles comprised in the first group.

[0034] The printing method 100 includes transmitting, in block 150, second print data 132 corresponding to a particular scan swath 145 to a second set of nozzles 152 fluidly connected to the first printing fluid, whereby the first set of nozzles 141 and the second set of nozzles 152 are non-intersecting sets of nozzles from the same first die.

[0035] The second print data corresponding to a particular scan swath should generally be understood to correspond to the swath 162 being a subset of the second digital representation, except that the entire second digital representation corresponding to the first printing fluid may be printed by the second set of nozzles in a single scan swath. Figure 1 In the illustrated example, although the second digital representation has a portrait shape, the illustrated scanning strip 145 causes a strip 162 of the portrait shape, i.e. a portion of the portrait shape, to be printed. It should be noted that the width printed by the second group of nozzles in a direction perpendicular to the print head travel direction 101 corresponds to the width of the second group of nozzles in this direction, whereby such a width of the second group of nozzles corresponds at most to the scanning strip height. The scanning strip height 163 corresponds to the scanning strip height of the scanning strip 145, which in this example includes both non-overlapping strips 161 and 162. It should be noted that, for example, if a print head such as Figure 2B If the mold shown in , this configuration will be different, as will be explained in more detail below.

[0036] In some examples, the width of the first group of nozzles along a direction perpendicular to the direction of print head travel corresponds to a first group of scanning strip heights, and the width of the second group of nozzles along a direction perpendicular to the direction of print head travel corresponds to a second group of scanning strip heights, wherein the first scanning strip height and the second scanning strip height do not overlap, and wherein the sum of the first scanning strip height and the second scanning strip height is less than or equal to the complete scanning strip height 163 of the mold.

[0037] exist Figure 1, the second set of nozzles are illustrated as black disks included in area 153, which is surrounded by a "dash-dot" line that encloses the second set of nozzles 152 and the resulting print corresponding to scan swath 145. Again, this configuration is for illustrative purposes, and the example groups may, for example, include hundreds or thousands of nozzles per group. Figure 1 , the second set of nozzles forms a single nozzle group positioned toward the second end of the mold carrying the nozzles and opposite the first end of the mold where the first set of nozzles 141 are located. Likewise, other groupings or locations of nozzles may be selected to form the second set of nozzles, as will be discussed further below.

[0038] The second group of nozzles is fluidly connected to the first printing fluid, whereby the first printing fluid may flow from a printing fluid reservoir through fluid channels or channels to the nozzles comprised in the second group.

[0039] The first group of nozzles 141 and the second group of nozzles 152 are non-intersecting groups of nozzles. Non-intersecting groups should be understood as nozzles included in such groups belonging to the first group or the second group. In other words, a supergroup including all nozzles from non-intersecting groups will include a total number of nozzles equal to the sum of the nozzles of each non-intersecting group.

[0040] The first set of nozzles 141 and the second set of nozzles 152 are from the same first mold 155. A mold should be understood as a monolithic body or a single piece of material in which the nozzles are formed. The mold can include nozzles, fluid chambers, and grooves. The mold can include a monolithic silicon substrate. The mold can be included in a layered architecture that includes elements such as fluid ports and resistors or piezoelectric elements to form a print head. Although the print head can include multiple different molds, the first set of nozzles 141 and the second set of nozzles 152 are from the same first mold. The first mold can include nozzles that are neither part of the first set of nozzles nor the second set of nozzles, such as Figure 1 The nozzle is illustrated by the white disk between groups 141 and 152.

[0041] This example configuration, as well as other example configurations described herein, provide the ability to print different representations on the same side of the same media, and to do so using a limited number of dies (e.g., a single die per printing fluid type), thereby allowing desired visual effects to be achieved in an efficient manner utilizing, for example, an existing printer base.

[0042] FIG. 2A to FIG. 2D Different example configurations of first and second nozzle groups according to example methods, printers, or non-transitory machine-readable storage media described herein are illustrated. As mentioned above, it should be understood that such configurations are for illustrative purposes, and the example groups may, for example, include hundreds or thousands of nozzles per group.

[0043] exist Figure 2A , a first group of nozzles 201 forms a single nozzle group positioned toward a first end of a mold carrying nozzles, and a second group of nozzles 202 forms a single nozzle group positioned toward a second end of the mold opposite to the first end. In this example, the first end and the second end are opposite along the medium advance direction 102, whereby the leading edge of the medium will first pass through the first group of nozzles and then through the second group of nozzles. In this example, the groups are separated along a line parallel to the printhead carriage axis 101. This configuration will, for example, facilitate printing on a given portion of a medium surface using the first group and then printing on the same given portion in a subsequent scan strip using the second group. In this example, the first group of nozzles and the second group of nozzles include different numbers of nozzles. In this example, all nozzles of the mold are included in the first group or in the second group.

[0044] exist Figure 2B , a first group of nozzles 211 forms a single nozzle group positioned toward a first side of the mold carrying the nozzles, and a second group of nozzles 212 forms a single nozzle group positioned toward a second side of the mold opposite to the first side. In this example, the first side and the second side are opposite along the printhead carriage axis 101, whereby the first group can be used first and then the second group to print onto a specific surface portion of the medium as the mold moves with the generation of a specific scan strip, or whereby the second group can be used first and then the first group to print onto a specific surface of the medium as the mold moves with the generation of a specific scan strip, depending on the direction of movement of the mold on the medium. In this example, the groups are separated along a line parallel to the medium advance direction 102. This configuration will, for example, provide for printing wide strips using two groups, whereby each of the first and second group scan strip heights can correspond to the scan strip height of the mold itself. In this example, the first group of nozzles and the second group of nozzles include the same number of nozzles. In this example, some nozzles of the mold illustrated in white are neither included in the first group nor in the second group.

[0045] exist Figure 2C , a first group of nozzles includes subgroups 221 and 231, which form a plurality of nozzle groups interleaved with a second group of nozzles including subgroups 222 and 232. In this example, the interleaving is in direction 102, with each group or subgroup of nozzles from a given group being separated by another group or subgroup of the same given group by at least one group or subgroup of the other group. This configuration allows printing of different swaths of each of the digital representations (two swaths of each of the first representation and the second representation in the illustrated example) with the same scan swath.

[0046] exist Figure 2D, a first group of nozzles 241 forms a single nozzle group positioned toward a first side and a first end of a mold carrying the nozzles, while a second group of nozzles 242 forms a single nozzle group positioned toward a second side and a second end of the mold opposite to the first side and the first end. In this example, the first side and the second side are opposite along the printhead carriage axis 101, wherein the first group can be used first and then the second group to print onto a particular surface of the medium, or wherein the second group can be used first and then the first group to print onto a particular surface of the medium, depending on the direction of movement of the mold on the medium. In this example, the first end and the second end are opposite along the media advance direction 102, wherein the leading edge of the medium will first pass through the first group of nozzles, and then through the second group of nozzles. In this example, the groups are separated by nozzles illustrated in white. This configuration will, for example, increase the time between printing on a given portion of the surface of the medium with the first group and then printing on the same given portion with the second group, for example by limiting printing to moving the mold from right to left relative to the axis 101.

[0047] Many other configurations are contemplated that are not described here.

[0048] Figure 3 Another example method 300 is illustrated, the method comprising: Figure 1 Boxes 110, 120, 130, 140 and 150 are described in the context of.

[0049] It should be noted that in this specification, some reference numerals are not carried over between different drawings in order to improve readability.

[0050] The method 300 includes transmitting first print data corresponding to a particular scan swath 345 to a first group of nozzles 341 fluidly connected to a first printing fluid in accordance with block 140, and transmitting second print data corresponding to a particular scan swath 345 to a second group of nozzles 352 fluidly connected to the first printing fluid in accordance with block 150, wherein the first group of nozzles and the second group of nozzles are non-intersecting groups of nozzles from the same first mold. In the figure, the first group of nozzles is illustrated as black disks, which are included in an area 343, which is surrounded by a "dash-dot" line, which encloses the first group of nozzles and the resulting print corresponding to the scan swath 345. In the figure, the second group of nozzles is illustrated as black disks, which are included in an area 353, which is surrounded by a "dash-dot" line, which encloses the second group of nozzles and the resulting print corresponding to the scan swath 345.

[0051] The method 300 further includes a block 360 of transmitting intermediate print data corresponding to a particular scan swath 345 to an additional set of nozzles 361 fluidly connected to an intermediate print fluid different from the first print fluid, wherein the intermediate print data corresponds to a layer to be printed between the first digital representation and the second digital representation. In the figure, the additional set of nozzles is depicted as white disks, which are included in an area 363, which is surrounded by a "dash-dot" line that encloses the second set of nozzles and the resulting print corresponding to the scan swath 345.

[0052] In some examples, the intermediate print data is associated with a digital representation provided in the form of a data file as discussed above in the context of the first representation data and the second representation data. In some examples, the intermediate print data is, for example, default screen data or data stored on a storage device of a printer controller, which data does not necessarily correspond to a digital representation.

[0053] The intermediate print data corresponds to a layer to be printed between the first digital representation and the second digital representation. Such printing between the first digital representation and the second digital representation means that a given portion of the surface of the medium will be first printed by, for example, a first set of nozzles, then printed by another set of nozzles, and then printed by a second set of nozzles, the layer printed by the other set of nozzles being sandwiched between the first layer printed by the first set of nozzles and the second layer printed by the second set of nozzles. In some examples, printing such successive layers on such a given portion of the surface of the medium is performed in different successive scan strips, for example Figure 3 As shown in the die configuration of , for example, the media advance corresponding to one, two or three nozzles along the media advance 102 will result in printing different layers separated by one or more strokes or scan swaths in multiple passes. As mentioned earlier in the specification, although each nozzle group is illustrated here as having three rows of nozzles along the printhead carriage axis 101, each nozzle group may include hundreds or thousands of such rows in the example.

[0054] exist Figure 2C or Figure 2D Such printing of successive layers in different successive scanning strips on such a given portion of the media surface can also be obtained in a mold configuration of, for example, another set of nozzles corresponding to, for example, group 363A. In such an example illustrated, the media advance between scanning strips should be no less than a threshold width of a set of nozzles along the media advance direction, whereby the threshold width corresponds to the width of the narrowest nozzle group or subgroup of the first, second, or additional set of nozzles along the media advance direction. Figure 2DIn the specific example of, with a single nozzle media advance, a given portion of media having a single nozzle width will "see" nozzles from a first group 10 times in 4 passes (4, then 3, then 2, then 1), see nozzles from another group 7 times in a single pass or scan swath, and see nozzles from the second group 10 times in 4 passes (1, then 2, then 3, then 4).

[0055] Printing on a continuous layer resulting in printing of intermediate print data corresponding to the layer to be printed between the first digital representation and the second digital representation according to block 360 can also be obtained by printing such continuous layers in a single scan swath, the separation occurring by the travel of the die along the printhead carriage axis 101. This can be achieved, for example, using Figure 2B , whereby the further set of nozzles corresponds to the white nozzles, whereby a die advancing from right to left will print on a given media surface portion using the first, further, and second sets of nozzles in this order.

[0056] Printing on a continuous layer of intermediate print data that results in printing corresponding to the layer to be printed between the first digital representation and the second digital representation according to block 360 can also be obtained by printing such continuous layers by printing successively layer by layer in different scanning strips or within the same scanning strip (for example using Figure 2D The combination of all white nozzles (such as those further set) is separated.

[0057] It should be noted that many other combinations of nozzle groups can be designed in order to obtain a layer to be printed between the first digital representation and the second digital representation according to 360, for example by using one or more additional nozzle groups or subgroups of the additional nozzle groups that separate the first group of nozzles and the second group of nozzles or one or more of the first group of nozzles and the second group of nozzles.

[0058] In some examples, the intermediate printing fluid can act as a screen fluid that acts as a filter between the first representation and the second representation. In some examples, the intermediate printing fluid forms an opaque layer between the first representation and the second representation, so that using a transparent or translucent print medium will result in seeing the first representation from one side of the medium and the second representation from the other side. In some examples, the intermediate printing fluid forms a translucent layer between the first representation and the second representation, so that using a transparent or translucent print medium will result in seeing a certain mixture of the first representation and the second representation from one side of the medium, and seeing another different mixture of the first representation and the second representation from the other side, where this mixture can be a function of lightning conditions. In some examples, the intermediate printing fluid is white ink.

[0059] In some examples, the width of a first group of nozzles along a direction perpendicular to the direction of print head travel corresponds to a first group of scanning strip heights, the width of a second group of nozzles along a direction perpendicular to the direction of print head travel corresponds to a second group of scanning strip heights, and the width of another group of nozzles along a direction perpendicular to the direction of print head travel corresponds to another group of scanning strips, wherein the first scanning strip height, the second scanning strip height, and the additional scanning strip height do not overlap, wherein the first scanning strip height, the additional scanning strip height, and the second scanning strip height are placed in this order, and wherein the sum of the first scanning strip height, the additional scanning strip height, and the second scanning strip height is less than or equal to the complete scanning strip height of the mold.

[0060] Figure 4 Another example printing method 400 is shown. The printing method 400 includes Figure 1 Although not shown here, the method 400 may further include: Figure 3 Box 360 is described in the context of .

[0061] The printing method 400 further includes: a box 420 for determining third print data corresponding to a second printing fluid for the first digital representation based on the first digital representation data, wherein the second printing fluid is different from the first printing fluid; a box 430 for determining fourth print data corresponding to the second printing fluid for the second digital representation based on the second digital representation data; a box 440 for transmitting the third print data corresponding to a particular scan swath to a third group of nozzles fluidly connected to the second printing fluid; and a box 450 for transmitting the fourth print data corresponding to the particular scan swath to a fourth group of nozzles fluidly connected to the second printing fluid, wherein the third group of nozzles and the fourth group of nozzles are non-overlapping groups of nozzles from the same second mold.

[0062] In some examples, the first fluid and the second fluid belong to the same ink set, and the ink set allows the reproduction of a multicolor representation based on inks from the ink set. Example ink sets include cyan, magenta, and yellow. Example ink sets include cyan, magenta, yellow, and black. Other colors may be considered, for example, in order to increase the color palette or in order to obtain a desired visual effect. Examples of such colors include, but are not limited to, orange, green, light cyan, light magenta, light yellow, gray, dark gray, light gray, metallic gold, metallic silver, or white. Although example method 400 introduces a second printing fluid that is different from the first printing fluid, additional example methods not shown here may include yet additional different printing fluids associated with additional nozzle groups, respectively, to enrich the color palette of the resulting printed representation.

[0063] In the illustrated example method 400, when the first mold includes a first nozzle group and a second nozzle group fluidly connected to a first printing fluid, a second mold is provided, the second mold including a third group and a fourth group fluidly connected to a second printing fluid. In some other examples, the first group, the second group, the third group, and the fourth group can be non-intersecting groups on the same mold, such a mold, for example, includes different grooves or channels that allow different fluids to be fed to different nozzle groups. The operations of blocks 420, 430, 440, and 450 correspond to the operations of blocks 120, 130, 140, and 150, respectively, which have the same first digital representation data and the same second digital representation data, the same medium, the same specific scanning strip, but with different printing fluids. Thus, the resulting print includes a combination of the first printing fluid and the second printing fluid.

[0064] In some examples, method 400 further includes Figure 3 Block 360 whereby the same intermediate printing fluid is fed to both the first mold and the second mold.

[0065] Figure 5 Another example printing method 500 is shown. The printing method 500 includes Figure 1 Although not shown here, the method 500 may further include: Figure 3 Although not shown here, the method 500 may further include: Figure 4 Boxes 420, 430, 440, and 450 are described in the context of.

[0066] The printing method 500 further includes transmitting the first print data and the second print data corresponding to blocks 140 and 150 using the same communication bus 503. A communication bus should be understood as a communication bus that connects the die to a printer controller, which can operate according to the example methods described herein. The communication bus can be connected to the die via electronic circuits. Using the same communication bus allows for an efficient design that uses the same bus to transmit data related to both the first representation and the second representation. Such a bus can transmit other data, such as Figure 3 This bus can transmit other data, such as Figure 4 Data of a third, fourth, or additional group described.

[0067] In some examples, nozzle groups according to the present disclosure are processed by a controller of a printer to be electronically addressable independently of each other. In some examples, each nozzle group is electronically driven by a controller of a printer using a corresponding halftone color plane that corresponds to a corresponding digital representation in a digital representation of the same printing fluid.

[0068] In some examples, compared to printing a single digital representation using a single die and the same printing fluid, whereby the data pointers for the nozzles of the die would span substantially the entire die scan swath height, some example methods according to the present disclosure enable data pointers to be selectively assigned to the nozzles on a group-by-group basis corresponding to the respective digital representation, thereby enabling the use of a single die (e.g., in Figure 1 , Figure 2A , Figure 2C and Figure 2D The nozzle group configuration illustrated in FIG. 1 effectively reduces the scan swath height of each digital representation compared to printing a single digital representation with the same printing fluid, whereby the remaining data pointers can be set to inputs of halftone planes corresponding to additional scan swaths.

[0069] Figure 6 Another example printing method 600 is shown. The printing method 600 includes Figure 1 Although not shown here, the method 600 may further include: Figure 3 Although not shown here, the method 600 may further include: Figure 4 Although not shown here, method 600 may use a bus (such as Figure 5 bus 503) to operate.

[0070] The printing method 600 further includes transmitting first print data corresponding to another specific scan strip 645 to the first group of nozzles in box 640, and transmitting second print data corresponding to another specific scan strip 645 to the second group of nozzles in box 650. In this representation, another specific scan strip 645 is represented as closely following the specific scan strip 145, and the medium has advanced a distance 604 of about one-sixth of the full scan strip height of the mold 155 between the scan strips 145 and 645 in the medium advancement direction. In other examples, for example, depending on the desired image quality, the distance between the other specific scan strip and the specific scan strip can be different and can change over time. In some examples, the other specific scan strip directly follows the specific scan strip. In other examples, one or more scan strips appear between the specific scan strip and the other specific scan strip. In some examples, the specific scan strip and the other specific scan strip are along the same direction. In some examples, the specific scan strip and the other specific scan strip are along opposite directions.

[0071] exist Figure 6In the figure, in addition to the result of printing a specific scanning strip 145 and after the medium is displaced 604 in the direction 102 between the scanning strips 145 and 645, the same first mold is represented twice, with the top representing the print data corresponding to the specific scanning strip 145 and the bottom representing the print data corresponding to another specific scanning strip 645.

[0072] like Figure 6 As illustrated in , the specific scanning strip and the further specific scanning strip are operated using the same first set of nozzles and the second set of nozzles. Additional scanning strips can be added in this manner to complete the first digital representation and the second digital representation.

[0073] Figure 7 Another example printing method 700 is shown. The printing method 700 includes Figure 1 Although not shown here, the method 700 may further include: Figure 3 Although not shown here, the method 700 may further include: Figure 4 Although not shown here, method 700 may use a bus (such as Figure 5 bus 503) to operate.

[0074] The printing method 700 further includes transmitting first print data corresponding to an additional specific scanning strip 745 to an additional first group of nozzles 741 in box 740, and transmitting second print data corresponding to the additional specific scanning strip 745 to an additional second group of nozzles 152 in box 750, wherein the additional first group of nozzles and the additional second group of nozzles are non-overlapping nozzle groups from the same given mold, wherein the additional first group of nozzles 741 is different from the first group of nozzles. In this case, the additional second group of nozzles 152 is the same as the second group of nozzles 152. In this representation, the additional specific scanning strip 745 is represented as closely following the specific scanning strip 145, and the medium has advanced a distance 704 in the medium advancement direction between the scanning strips 145 and 745. The relationship between the scanning strips 145 and 745 can be the same as described above in Figure 6 The relationship between scanning strips 145 and 645 discussed in the context of has the same nature.

[0075] Also in Figure 7In the figure, in addition to the result of printing a specific scanning strip 145 and after the medium is displaced in the direction 704 between the scanning strips 145 and 745, the same first mold is represented twice, with the top representing the printing data corresponding to the specific scanning strip 145 and the bottom representing the printing data corresponding to another specific scanning strip 745.

[0076] like Figure 7 As illustrated in , a particular scanning strip and another particular scanning strip are operated using different first sets of nozzles. This change can occur, for example, based on a desired change in print speed, image density, sharpness, nozzle health or quality. Figure 7 7, further first set of nozzles 741 are illustrated as black disks included in area 743 which is surrounded by a "dash-dot" line enclosing the further first set of nozzles and the resulting print corresponding to scan swath 745. Using a different first set of nozzles according to this example method 700 may, for example, allow use of clogged nozzles to be avoided.

[0077] exist Figure 8 , a method 800 is illustrated, the method 800 includes as in Figure 7 845. In the example method 800, the additional second set of nozzles 852 is different from the second set of nozzles 152. The additional second set of nozzles 852 is illustrated as black disks that are included in the area 853, which is surrounded by a "dash-dot" line that encloses the additional second set of nozzles and the resulting print corresponding to the scan strip 845. This change can occur, for example, based on printing speed, image density changes, clarity, nozzle health or quality. Using a different second set of nozzles according to the example method 800 can, for example, allow the use of clogged nozzles to be avoided.

[0078] Fig. 9 An example printer 900 is illustrated. A printer according to the present disclosure should be understood as a printing device that is configured to process digital representation data to eject a printing fluid on a medium through a nozzle to obtain a tangible representation of the digital representation. The example printer is a thermal inkjet printer, in which the nozzle is activated by a resistive element, or a piezoelectric inkjet printer, in which the nozzle is activated by a piezoelectric element. The example printer includes a scanning print head, which reciprocates along the print head carriage axis when the medium advances along the media advance direction at a certain angle (for example, about 90 degrees) to the print head carriage axis, and the print head includes one or more molds, each mold carrying a nozzle. The example printer described hereby is configured to operate according to any of the example methods described hereby.

[0079] The example printer 900 includes a first printhead die, such as the example die 155 described in the context of the example methods.

[0080] The example printer 900 further includes a printer controller 970. The example controller 970 includes a processor 971 and a storage device 972 coupled to the processor 971. In some examples, the controller may further include a network interface for receiving data. In other examples, the data may be provided locally, for example, through a connector. The processor 971 may include electronic circuits for computing managed by an operating system. The example controller 970 further includes an instruction set 973 for cooperating with the processor 971 and the storage device 972.

[0081] Fig. 9 Thus illustrated is an example non-transitory machine-readable or computer-readable storage medium, such as a memory or storage device 972, wherein the non-transitory machine-readable storage medium is encoded with instructions executable by a processor (such as processor 971), the machine-readable storage medium including instructions for operating the processor 971 to perform according to any of the example methods described herein.

[0082] A computer readable storage device or storage device according to the present disclosure may be any electronic storage device, magnetic storage device, optical storage device, or other physical storage device that stores executable instructions. A computer readable storage device may be, for example, a random access memory (RAM), an electrically erasable programmable read-only memory (EEPROM), a storage drive, an optical disk, etc. As described herein, a computer readable storage device may be encoded with executable instructions that implement a printer controller described herein. The storage device or memory may include any electronic storage device, magnetic storage device, optical storage device, or other physical storage device that stores executable instructions as described herein.

[0083] The instruction set 973 is for cooperating with the processor 971 and the storage device 972, as illustrated in block 910, to receive first digital representation data 111 and second digital representation data 112, respectively, of a first image and a second image to be superimposed on the same side of a medium. The first digital representation data and the second digital representation data are as described in the context of the example method claims, in particular in the context of block 110. The superposition of the first image and the second image is to be understood as being produced by the superposition of droplets of printing fluid ejected by nozzles in the nozzle groups as described herewith, the superposition of such droplets on the medium resulting in the superposition of the images.

[0084] The instruction set 973 is for cooperating with the processor 971 and the storage device 972, as illustrated in block 920, to determine first print data 121 corresponding to a first printing fluid for a first image based on the first digital representation data. The first print data 121 is as described in the context of the corresponding block 120 of the example method claim. Such determination of print data may be generated, for example, by a print pipeline operation (such as halftoning, rasterization or masking) that allows the source digital representation data 111 to be converted into data that can be processed, for example, by an electronic circuit that operates a nozzle associated with a specific printing fluid (such as the first printing fluid).

[0085] The instruction set 973 is for cooperating with the processor 971 and the storage device 972, as illustrated in block 930, to determine second print data 132 corresponding to the first printing fluid for the second image based on the second digital representation data. The first print data 132 is as described in the context of the corresponding block 130 of the example method claim. Also in this case, the determination of such print data may be generated, for example, by a print pipeline operation (such as halftoning, rasterization or masking) that allows the source digital representation data 112 to be converted into data that can be processed, for example, by an electronic circuit that operates a nozzle associated with a specific printing fluid (such as the first printing fluid).

[0086] The instruction set 973 is used to cooperate with the processor 971 and the storage device 972, as illustrated in block 940, to transmit first print data corresponding to a given stroke 145 of the first printhead die 155 to a first set of nozzles 141 fluidly connected to a first printing fluid. It should be understood that the given stroke 145 is produced by moving the die relative to the medium in a given direction along the printhead carriage axis 101 to produce a scan swath (such as the scan swath 145 described in the context of block 140). The first set of nozzles 141 is as described in the context of the example method claim.

[0087] The instruction set 973 is used to cooperate with the processor 971 and the storage device 972, as illustrated in box 950, to transmit the second printing data 132 corresponding to the given stroke 145 to the second group of nozzles 152 fluidically connected to the first printing fluid, wherein the first group of nozzles and the second group of nozzles belong to the first print head mold 155, and wherein the first group of nozzles and the second group of nozzles belong to the first area and the second area of ​​the first print head mold that are different along the printing direction, respectively.

[0088] The printing direction should be understood as the path corresponding to the nozzle ejecting the printing fluid over time. The media advance direction 102 is the component of the printing direction between scan swaths or strokes, where consecutive strokes or scan swaths follow each other in time and along the media advance direction 102. In a given stroke or scan swath, the direction in which the mold travels along the printhead carriage direction 101 is also the component of the printing direction within such a stroke or scan swath. This printing direction is related to the nozzle group configuration. Figure 2A and Figure 2C The nozzle group configuration corresponds, for example, to the printing direction between scanning swaths or strokes, in other words, along the medium advancement direction. Figure 2B The nozzle group configuration corresponds, for example, to a printing direction within a given scanning swath or stroke, in other words, along the direction of movement of the mold during the scanning swath or stroke. Figure 2D The nozzle group configuration corresponds to a printing direction that combines both within a given scanning swath or pass and between scanning swaths or passes.

[0089] In some examples, the first group belongs to a first region of the print head that is in front of a second region corresponding to the second group. Figure 2A , where the media moves in direction 102, first through first group 201, then through group 202 in the printing direction (between scan swaths), in this case in the media advance direction. Figure 2C A similar situation is illustrated in , where the first region 221 is located before the second region 222 , and the first region 231 is located before the second region 232 along the medium advancing direction 102 .

[0090] exist Figure 2B In the example mold of , the first area and the second area are both equally placed along the media advance direction. However, during printing of a given scan strip or stroke, if the given scan strip or stroke is generated by the movement of the mold from right to left along the direction 101 (the printing direction is defined at the scan strip level), the first area 211 is located before the second area 212, but if the given scan strip or stroke is generated by the movement of the mold from left to right along the direction 101, the second area 212 is located before the first area 211.

[0091] exist Figure 2D In the example of FIG. 1 , although the first region 241 is located before the second region 242 along the media advance direction 102, the situation may be different within a given scanning swath or stroke. If the die moves from left to right, the first region 241 is located before the second region 242 during a given scanning swath or stroke. If the die moves from right to left, the first region 241 is located after the second region 242 during a given scanning swath or stroke.

[0092] As illustrated, the printing direction may not necessarily follow a straight line, but may follow a zigzag line in conjunction with the movement of the die relative to the media within and between strokes or scan swaths. Such positioning of the regions of the group relative to the printing direction enables a desired superposition of the first image and the second image to be obtained. Different configurations may, for example, affect the drying time between layers, whereby printing different layers onto a given portion of the media between different scan swaths may be

[0093] like Fig. 9 As illustrated in , the example storage device 972 is a non-transitory machine-readable storage medium encoded with instructions executable by the processor 971, the non-transitory machine-readable storage medium including:

[0094] Instructions consistent with block 910 or 110 for acquiring first digital representation data and second digital representation data for a first digital representation and a second digital representation to be printed on a same side of a same medium;

[0095] Instructions consistent with block 920 or 120 for defining first print data corresponding to a first printing fluid for a first digital representation based on the first digital representation data;

[0096] Instructions consistent with block 930 or 130 for defining second printing data corresponding to the first printing fluid for a second digital representation based on the second digital representation data;

[0097] Instructions consistent with block 940 or 140 for transmitting first print data corresponding to a particular scan swath to a first set of nozzles 141; and

[0098] Instructions consistent with box 950 or 150 are used to transmit second print data corresponding to a particular scanning band to a second group of nozzles 152, wherein the first group of nozzles and the second group of nozzles are separate nozzle groups along the printing direction (e.g., the media advance direction) and are included in the same mold 155.

[0099] Fig.10 Another example printer 1000 is shown. This example printer includes the Fig. 9 This component has been introduced in Fig.10 1060, to transmit the intermediate printing data corresponding to the given stroke to a further set of nozzles 361 fluidly connected to the intermediate printing fluid different from the first printing fluid, wherein the further set of nozzles includes nozzles belonging to a further area located between the first area and the second area of ​​the first print head mold along the printing direction. The intermediate printing data, the further set of nozzles 361 and the intermediate printing fluid are as described in the context of block 160.

[0100] In some examples, an additional set of nozzles belongs to the first print head die, such as in Fig.10 Other examples of another set of nozzles 363A belonging to the first print head mold are shown in Figure 2B and Figure 2D Medium picture.

[0101] Fig.11 Another example printer 1100 is shown. This example printer includes the Fig.10 This component has been introduced in Fig.11 100 further includes a second print head die 1155 adjacent to the first print head die 155, wherein an additional set of nozzles belongs to the second print head die. In this example, the additional set of nozzles is illustrated by a black disk in the die 1155. This configuration can, for example, avoid feeding different printing fluids into the same die. Adjacent dies are adjacent, for example, along the print head carriage axis 101. Although adjacent dies are adjacent to each other, the adjacent dies are not adjacent to each other. Fig.11 4. In some embodiments, the printhead 100 is shown as being directly adjacent to each other, but in other examples, one or more additional dies may be present between adjacent dies. Such one or more additional dies may, for example, allow the printer to be operated using one or more additional printing fluids (such as the second printing fluid discussed in the context of example method 400). In some configurations, the printhead includes multiple adjacent dies that share a common die scan swath along direction 101, each die being associated with a single specific printing fluid.

[0102] Fig.12 Another example printer 1200 is shown. This example printer includes the Fig.10 This component has been introduced in Fig.12 1154. The printer 1200 may further include a second print head die, such as die 1155, although not shown. The printer 1200 further includes a first communication bus 1201 and a second communication bus 1202 for transmitting the corresponding first print data and the second print data to the corresponding corresponding nozzle groups between the controller and the first print head die. In this configuration, each number represents the benefit of a dedicated bus that acts as a dedicated communication line, thereby allowing the data transmission speed to be increased by adapting the example printer to operate the example method described herein.

[0103] Fig.13 Another example printer 1300 is shown. This example printer includes the Fig.10 This component has been introduced in Fig.13There are no numbers in order to improve readability. Although not shown, the printer 1300 may further include a second printhead mold, such as mold 1155. Although not shown, the printer 1300 may further include a first communication bus 1201 and a second communication bus 1202, or the same bus, such as bus 503. In the printer 1300, the first group of nozzles and the second group of nozzles share the same groove 1301 of the first printhead mold to be fluidly connected to the first printing fluid. The groove should be understood as a fluid channel that transports the printing fluid from the reservoir to the nozzle. In some examples, the groove is included in the monolithic body forming the mold, in particular in the monolithic silicon substrate forming the first printhead mold. In terms of mold manufacturing, it is efficient to use such a single groove for both the first nozzle group and the second nozzle group, while allowing the same mold to be used on the same surface of the same medium to print specific printing fluid components of the first image and the second image at the same time. In some examples not shown here, the first nozzle group and the second nozzle group can be fluidly connected to different grooves. In some examples not shown here, the nozzles from the first nozzle group can be fluidly connected to different grooves. In some examples not shown here, nozzles from the second nozzle group can be fluidly connected to different grooves. In some examples, all nozzles from the same nozzle group are fluidly connected to the same groove. In some examples, the same groove shared by the first group of nozzles and the second group of nozzles according to the present disclosure is processed by the controller of the printer as a first virtual groove and a second virtual groove in the nozzle data pointer addressing or nozzle firing process. In some examples, the same groove is processed in the controller of the printer as multiple virtual grooves, each of which corresponds to a corresponding nozzle group or subgroup according to the present disclosure, and in some examples, the controller of the printer assigns a corresponding nozzle group or subgroup scanning strip height to such nozzle group or subgroup.

Claims

1. A printing method, comprising: receiving first digital representation data and second digital representation data to be printed on a same side of a same medium for the first digital representation and the second digital representation; determining first printing data corresponding to a first printing fluid for the first digital representation based on the first digital representation data; determining second printing data corresponding to the first printing fluid for the second digital representation based on the second digital representation data; transmitting the first print data corresponding to a particular scan swath to a first set of nozzles fluidly connected to the first printing fluid; as well as The second print data corresponding to the particular scan swath is transmitted to a second group of nozzles fluidly connected to the first printing fluid, wherein the first group of nozzles and the second group of nozzles are non-intersecting groups of nozzles from the same first die.

2. The method according to claim 1, further comprising: Intermediate print data corresponding to the particular scan swath is communicated to a further set of nozzles fluidly connected to an intermediate printing fluid different from the first printing fluid, wherein the intermediate print data corresponds to a layer to be printed between the first digital representation and the second digital representation.

3. The method according to claim 2, wherein the intermediate printing fluid is white ink.

4. The method according to claim 1, further comprising: determining third printing data corresponding to a second printing fluid for the first digital representation based on the first digital representation data, wherein the second printing fluid is different from the first printing fluid; determining fourth printing data corresponding to the second printing fluid for the second digital representation based on the second digital representation data; transmitting the third print data corresponding to the particular scan swath to a third set of nozzles fluidly connected to the second printing fluid; as well as The fourth print data corresponding to the particular scan swath is transmitted to a fourth group of nozzles fluidly connected to the second printing fluid, wherein the third group of nozzles and the fourth group of nozzles are non-intersecting groups of nozzles from the same second die.

5. The method of claim 1, further comprising transmitting the first print data and the second print data using a same communication bus.

6. The method according to claim 1, further comprising: transmitting the first print data corresponding to another specific scanning swath to the first group of nozzles; as well as The second print data corresponding to the additional specific scanning swath is transmitted to the second group of nozzles.

7. The method according to claim 1, further comprising: transmitting the first print data corresponding to another specific scanning strip to another first group of nozzles; as well as The second print data corresponding to the additional specific scanning band is transmitted to an additional second group of nozzles, wherein the additional first group of nozzles and the additional second group of nozzles are non-overlapping groups of nozzles from the same given mold, and wherein the additional first group of nozzles is different from the first group of nozzles.

8. The method of claim 7, wherein the additional second set of nozzles is different from the second set of nozzles.

9. A printer comprising: a first print head mold; a printer controller comprising a processor and a storage device coupled to the processor; as well as an instruction set for cooperating with the processor and the storage device to: receiving first digitally representative data and second digitally representative data of a first image and a second image to be superimposed, respectively, on a same side of a medium; determining first printing data corresponding to a first printing fluid for the first image based on the first digital representation data; determining second printing data corresponding to the first printing fluid for the second image based on the second digital representation data; transmitting the first print data corresponding to a given stroke of the first print head die to a first set of nozzles fluidly connected to a first printing fluid; as well as The second printing data corresponding to the given stroke is transmitted to a second group of nozzles fluidically connected to the first printing fluid, wherein the first group of nozzles and the second group of nozzles belong to the first print head mold, and wherein the first group of nozzles and the second group of nozzles belong to different first and second areas of the first print head mold along a printing direction, respectively.

10. A printer according to claim 9, wherein the instruction set further cooperates with the processor and the storage device to transmit the intermediate printing data corresponding to the given stroke to another set of nozzles fluidly connected to an intermediate printing fluid different from the first printing fluid, wherein the other set of nozzles includes nozzles belonging to another area located between the first area and the second area of ​​the first print head mold along the printing direction.

11. The printer according to claim 10, wherein: The additional set of nozzles belongs to the first print head die.

12. The printer according to claim 10, wherein: The printer includes a second printhead die adjacent to the first printhead die, wherein the additional set of nozzles belongs to the second printhead die.

13. The printer according to claim 9, wherein: The printer includes first and second communication buses for transmitting respective first and second print data between the controller and the first print head die.

14. The printer according to claim 9, wherein: The first group of nozzles and the second group of nozzles share a same groove of the first printhead die for fluid connection to the first printing fluid.

15. A non-transitory machine-readable storage medium encoded with instructions executable by a processor, the non-transitory machine-readable storage medium comprising: instructions for acquiring first digital representation data and second digital representation data for the first digital representation and the second digital representation to be printed on the same side of the same medium; instructions for defining first printing data corresponding to a first printing fluid for the first digital representation based on the first digital representation data; instructions for defining second printing data corresponding to the first printing fluid for the second digital representation based on the second digital representation data; instructions for transmitting the first print data corresponding to a particular scan swath to a first set of nozzles; as well as Instructions for transmitting the second print data corresponding to the particular scan swath to a second group of nozzles, wherein the first group of nozzles and the second group of nozzles are separate groups of nozzles along a media advance direction and are included in a same die.

Images