Abstract: In some examples, a print controller is to receive a preference relating to a choice between quantity in printing images by a printing apparatus and quality of printed images and vary a threshold value according to the received preference to produce a dynamically set threshold value. The print controller is to further initiate printing of a print job using the first print head array, determine whether an image quality defect value associated with printing at least one of image of the print job exceeds the dynamically set threshold value, in response to determining that the image quality defect value does not exceed the dynamically set threshold value, continue printing the at least one image with the first print head array, and in response to determining that the image quality defect value exceeds the dynamically set threshold value, cause movement of the first print head array from a first position to the servicing station.

Abstract: A printing apparatus is provided in which a position of a joint of a first yellow nozzle group and a second yellow nozzle group in a predetermined direction is offset from a position of a joint of a first magenta nozzle group and a second magenta nozzle group in a predetermined position and a position of a joint of a first cyan nozzle group and a second cyan nozzle group in the predetermined position, and the position of the joint of the first magenta nozzle group and the second magenta nozzle group in the predetermined position is the same as the position of the joint of the first cyan nozzle group and the second cyan nozzle group in the predetermined direction.

Abstract: The invention relates to a method of printing a two-dimensional bit-mapped image having a number of pixels per row, the printhead having a row of ejection channels and each ejection channel having associated ejection electrodes to which voltages are applied in use. During printing, in order to cause volumes of fluid to be ejected from selected ejection channels of the printhead for printing, voltage pulses having values of predetermined amplitude and duration as determined by respective image pixel bit values generated by a raster image processor are applied, at a given pulse period, to the electrodes of the selected ejection channels.

Abstract: According to one embodiment, an element substrate includes: heater arrays each having heaters arranged in parallel; corresponding transistors for driving the heaters included in the heater arrays; a first pad for supplying a voltage to be applied to the heaters; and a second pad for grounding the heaters. The element substrate is provided with a first wiring for connecting the first pad to the heaters, and a second wiring for connecting the heaters to the second pad. Furthermore, sizes of the transistors included in a heater array, of the heater arrays, provided at a position where intervals with respect to the first pad and the second pad are relatively large are set to be larger than the sizes of the transistors included in a heater array provided at a position where the intervals are relatively small.

Abstract: A dot recording apparatus forms dots on a recording medium while relatively moving a recording head that includes a plurality of nozzles and the recording medium in a main scanning direction. The dot recording apparatus performs multi-pass recording in which dot recording on a main scanning line is completed by a plurality of main scanning passes. In dot recording in each main scanning pass, the dot recording is performed using a plurality of super cell regions that include m types of super cell regions having different sizes, the super cell region being formed as one dot group by some of the plurality of nozzles and having a boundary line portion which is not parallel to either the main scanning direction or a sub-scanning direction that intersects the main scanning direction in at least a portion of a boundary line between the super cell region and another super cell region.

Abstract: A printhead assembly includes a printbar beam member and a plurality of printheads disposed thereon. The printbar beam member includes a printbar longitudinal axis. Each one of the printheads includes a printhead longitudinal axis and a row of nozzles arranged parallel to the printhead longitudinal axis. The plurality of printheads are arranged on the printbar beam member in a manner in which each respective printhead longitudinal axis is traverse to the printbar longitudinal axis.

Abstract: Methods of manufacturing a volumetric continuous gradient complex dielectric element with drop-on-demand techniques, such as inkjet printing, by calculating spatial placement of nanocomposite-ink droplets are disclosed. The methods comprise determining or having a multi-dimensional gradient profile representing a volumetric gradient complex dielectric element. Providing or having a plurality of nanocomposite-inks, at least one of the nanocomposite-inks having a curable organic-matrix and a concentration of nanoparticles dispersed within to print the volumetric continuous gradient complex dielectric device. A print mask is determined in one-, two-, or three-dimensions that reconstructs the multi-dimensional gradient profile as a discretized pattern based on the material properties of the plurality of nanocomposite-inks and properties of a printing apparatus.

Abstract: A data transfer circuit has a first data transmission unit and two or more second shift registers. The first data transmission unit has a first shift register which has a plurality of first flip flop circuits which store data, shifts the data of the plurality of first flip flop circuits, and transmits data of two or more output terminals out of output terminals of the plurality of first flip flop circuits to the two or more second shift registers. The two or more second shift registers each shift data inputted from the two or more output terminals out of the output terminals of the plurality of first flip flop circuits.

Abstract: An image processing method includes: forming an image for density unevenness measurement on a recording medium in a single-pass method, using an inkjet head in which nozzles are disposed in a main scanning direction; acquiring a density measurement value of each set gradation value from an image for density unevenness measurement before drying; converting the acquired density measurement value into a conversion density measurement value corresponding to a post-dry density measurement value, using a density measurement value conversion value set for each region in the main scanning direction; and deriving a new unevenness correction value using this conversion density measurement value.

Abstract: A dot recording apparatus forms dots on a recording medium while relatively moving a recording head that includes a plurality of nozzles and the recording medium in a main scanning direction. The dot recording apparatus performs multi-pass recording in which dot recording on a main scanning line is completed by a plurality of main scanning passes. In dot recording in each main scanning pass, the dot recording is performed with a super cell region as a unit, the super cell region including one or more unit super cells formed as a dot group of one mass by some of the plurality of nozzles. In the same main scanning pass, the number of unit super cells recorded by m nozzles at an end portion of the recording head is smaller than the number of unit super cells recorded by m nozzles at a center portion of the recording head.

Abstract: An ink-jet printer, including a density detector and a controller, wherein, where successive three ejecting operations to be repeatedly performed on the same predetermined region of a recording medium are defined as first through third ejecting operations in the order of performance, the controller executes: a process for detecting a color density of the predetermined region immediately after attachment of the ink ejected in the second ejecting operation; a process for calculating, based on the detected color density, an estimated density after fixation of the ink ejected in the second ejecting operation; a process for calculating, based on print data, an ideal density after fixation of the ink ejected in the second ejecting operation; and a process for correcting the print data based on a difference between the estimated density and the ideal density, and wherein the ink-jet printer performs the third ejecting operation based on the corrected print data.

Abstract: An ink jet ink with high structure pigment particles can include a liquid vehicle, high structure pigment particles dispersed in the liquid vehicle at from about 0.2 wt % to about 5.0 wt %, and a polyurethane binder present in the liquid vehicle at from about 0.2 wt % to about 5.0 wt %. The high structure pigment particles can have polymer dispersant adsorbed onto a surface thereof, a DBP absorption value at a minimum of about 75 ml/100 g, and a surface area of about 200 m2/g to about 2000 m2/g.

Abstract: A print apparatus that is configured to cause a print head provided with nozzles and a printing substrate to move relatively, eject an ink from the nozzles, and record dots onto the printing substrate includes a print control unit. The print control unit is configured to perform a control for ejecting the ink from the nozzles, and the print control unit modifies a proportion at which dots are formed adjacent to one another depending on an ejected amount of ink.

Abstract: A printing control device includes a nozzle information obtainment unit that obtains the position of a discharge-failing nozzle which fails to discharge ink in a printing head which includes a nozzle array, a data generation unit that generates printing data in which a dot position is associated with a nozzle which discharges ink so that a raster which is one line and is configured by a plurality of dot positions is configured through multiple times of a scan, and a data correction unit that specifies a first position which is the position where ink is discharged by a discharge-failing nozzle and corrects the printing data so that non-discharge of ink is associated with the first position, and discharge of ink is associated with a second position between which the first position is interposed when discharge of ink is associated with the first position in the printing data generated.

Abstract: An inkjet printer including a printhead with a fluid ejection chip and an associated method of forming is described. The fluid ejection chip includes a substrate, a plurality of groups of drive elements formed on the substrate, and a plurality of fluid ejection devices disposed on the substrate. Each group of drive elements includes at least two drive elements electrically coupled in parallel. Each fluid ejection device of the plurality of fluid ejection devices is electrically coupled with a respective group of the plurality of groups of drive elements so that the plurality of drive elements selectively activate the plurality of fluid ejection devices for causing fluid to be expelled from the printhead in accordance with image data.

Abstract: A method of increasing data flow to a printing device includes, with a first raster image processor, converting a document into a first bitmap having a first dot density and representing a black color plane of the document; with a second raster image processor, converting the document into a second bitmap at a second dot density that is a relatively lower dot density than that of the first bitmap, the second bitmap representing other color planes of the document; and transmitting data of the first and second bitmaps to a printing device for printing to a print medium.

Abstract: A printing control apparatus which realizes printing by controlling a printing head including nozzle rows in which a plurality of nozzles are arranged in a predetermined nozzle row direction, the apparatus including a control section that controls the printing head in which the plurality of nozzle rows discharging same types of ink are disposed to be deviated from the nozzle row direction, in which the control section is capable of selecting and performing any one of a first printing mode in which the printing is performed by setting a platen gap which is a distance from a platen supporting the printing medium on which the ink is discharged to the printing head as a first platen gap, and a second printing mode in which the printing is performed by setting the platen gap as a second platen gap which is narrower than the first platen gap.

Abstract: An ink jet printing apparatus and an ink jet printing method capable of suppressing the occurrence of the texture or the feeling of granularity at a joint part even in the case where a thinning ratio in a boundary region is adjusted in order to reduce a joint streak are provided. To achieve such purposes, one dot arrangement pattern is set from a plurality of dot arrangement patterns for each pixel in accordance with a gradation level and a position on a printing medium. At this time, in a pixel region located at the joint part, a second dot arrangement pattern whose number of dots is different from a first dot arrangement pattern, which is set in the pixel region located at a part other than the joint part, is arranged so that low frequency components are less than high frequency components.

Abstract: A printhead including one or more fluid vias in fluid communication with a fluid supply, each of the one or more fluid vias being associated with a first number of heating elements, the heating elements being divided into groups of a second number of heating elements so as to form a number of primitive groups, and an electrical interface having at least one shift register that receives primitive address data to allow for selective application of electrical signals to the heating elements so that fluid is ejected from the printhead in accordance with image data, the number of primitive groups being dependent on the print resolution of the printhead so that a number of bits required for the at least one shift register to address each heater is independent of the print resolution of the printhead.

Abstract: Print masks for multiple pass print modes are described herein. In at least some examples herein, the print mask includes mask matrices. The mask matrices define a single nozzle actuation pattern. The nozzle actuation pattern is irregular. In at least some examples herein, techniques for printing of an image on a substrate are described. During printing the image on the substrate a print mask is applied such that, for each pass, the inkjet nozzles in the print head are actuated according to the single nozzle actuation pattern.

Abstract: A bifurcation path and a flow path which communicates with the head main body through the bifurcation path are provided. The bifurcation path includes an upstream-side path and a downstream-side path. In a plan view of a flow-path forming surface including the bifurcation path and the flow path, the flow path is disposed in a state where an angle between a flowing direction in the flow path and a flowing direction in the downstream-side path is an acute angle. In addition, an angle between a first wall surface of the flow path, which is the wall surface located downstream from the upstream-side path, and a second wall surface of the upstream-side path, which is the wall surface connected to the first wall surface, is equal to or less than 90°. Furthermore, the second wall surface of the upstream-side path has an R shape.

Abstract: In a case where ink having a relatively high dot height is ejected a small amount, binary data corresponding to ink having a relatively low dot height is quantized so that dot adjacency is increased.

Abstract: A channel-structure has first to third nozzle-rows for first-ink, and first and second nozzle-rows for second-ink. Between the first nozzle-row for the first-ink and the first nozzle-row for the second-ink, and between the second nozzle-row for the first-ink and the second nozzle-row for the second-ink, each nozzle is located in the same position. The third nozzle-row for the first-ink is located in a different position with respect to the first and second nozzle-rows. Either the first and the second nozzle-rows for the second-ink are arranged between the first and second nozzle-rows for the first-ink, or the first and second nozzle-rows for the first-ink are arranged between the first and second nozzle-rows for the second-ink. A distance between the first nozzle-row for the first-ink and the first nozzle-row for the second-ink is equal to a distance between the second nozzle-row for the first-ink and the second nozzle-row for the second-ink.

Abstract: A print control device includes: a control section that controls a print head that includes first nozzles and second nozzles, wherein the control section causes a first region that is expressed by liquid ejected only by the first nozzles, a second region that is expressed by the liquid ejected from the first nozzles and the second nozzles depending on a first usage rate of the first nozzles and the second nozzles, and a third region that connects the first region and the second region, and is expressed by the liquid ejected from the first nozzles and the second nozzles depending on a second usage rate to be printed onto a printing medium, and wherein the second usage rate is a value that is obtained by increasing a usage rate of the second nozzles from a first region side to a second region side.

Abstract: A method of controlling a pressure of a fluid in a pressure chamber, which pressure chamber is delimited by an actuator membrane having a first piezoelectric portion arranged in a central zone of the actuator membrane and at least one second piezoelectric portion arranged in at least one peripheral zone of the actuator membrane; and an ink jet printing device. In a neutral stage, a first flexure state of the actuator membrane is provided by applying first and second voltages to respective piezoelectric portions. In an activation stage, the first and second voltages are temporarily varied, without reversing their polarity, such that a curvature of the central part of the actuator membrane and a curvature of the peripheral part of the actuator membrane are changed in opposite directions, in order to expell a droplet of fluid through a nozzle.

Abstract: After one ink of a white ink or a silver ink is ejected in a predetermined position of a recording medium such as a piece of recording paper to form a base layer, the other ink thereof is ejected on the base layer to form an intermediate layer, and a clear ink is ejected on the intermediate layer to form an epidermal layer.

Abstract: This invention relates to suppression of density unevenness caused by occurrence of ink-landing position shifts between print scans. In an embodiment, upon printing by scanning an inkjet printhead including printing elements, the following control is executed. That is, in order to form an image by print scans of the printhead on a single print area on a print medium, image data are acquired in correspondence with the respective scans. Also, the printing elements are partitioned into plural groups each including continuously arrayed printing elements, and the printing elements in each of the plural groups are time-divisionally driven based on drive sequences. Then, the drive sequences upon time-divisional driving in respective scans are set to include elements having the same drive timings and those having different drive timings.

Abstract: According to an aspect of the present invention, in a case where a part of the plurality of head modules to each of which an initial amount of correction is set is replaced, a mounting position of the replaced head module in the first direction varies in a range within the mounting tolerance. However, the initial amount of correction in the first direction of each of the head modules is set by adding the amount of the offset more than the mounting tolerance, a mounting position of the replaced head module is always upstream from the offset reference line in the feeding direction of a recording medium. Thus, it is required to correct only an amount of correction of the replaced head module with reference to the offset reference line, so that the amount of correction of a non-replaced head module can be used without being corrected.

Abstract: In a case that a setting size for a print medium is set in print target data and the setting size has not been acquired as a candidate, a size having an aspect ratio corresponding to the aspect ratio of the setting size is specified. Next, a printer is controlled to print an image based on the print target data having a size corresponding to the size.

Abstract: The invention relates to a method of controlling a printer, the printer having an array of nozzles which extends across a print zone of the printer, the method comprising the steps of: evaluating a nozzle status of the array of nozzles; printing a first swath across the print media in the print zone, wherein the array of nozzles is located in a first position during printing of the first swath; determining a second position of the array of nozzles for printing a second swath so that, under consideration of the determined nozzle status, the combined output of the first and second swaths meets a predetermined criterion; moving the array of nozzles to the determined second position and printing the second swath across the print media in the print zone.

Abstract: An image forming apparatus includes: a recording head having a first nozzle row and a second nozzle row that are adjacent to each other in a direction perpendicular to a conveying direction of a recording medium, a plurality of nozzles being arrayed in the conveying direction in each of the first nozzle row and the second nozzle row, each of the nozzles ejecting one of p types of droplets including a predetermined specific type of droplets, the p being an integer equal to or greater than three; a moving unit that relatively reciprocates the recording medium and the recording head in a direction perpendicular to the conveying direction; and a control unit that controls ejection of the p types of droplets from the nozzles, wherein the nozzles in each of the first nozzle row and the second nozzle row are divided into (p?1) nozzle groups in the conveying direction, first nozzles of the nozzles in a k-th nozzle group (1?k?p?1) in the conveying direction and in one of the first nozzle row and the second nozzle row

Abstract: A printing apparatus is provided in which a position of a joint of a first yellow nozzle group and a second yellow nozzle group in a predetermined direction is offset from a position of a joint of a first magenta nozzle group and a second magenta nozzle group in a predetermined position and a position of a joint of a first cyan nozzle group and a second cyan nozzle group in the predetermined position, and the position of the joint of the first magenta nozzle group and the second magenta nozzle group in the predetermined position is the same as the position of the joint of the first cyan nozzle group and the second cyan nozzle group in the predetermined direction.

Abstract: There is provided a liquid discharging apparatus including: an original drive signal generation unit which generates an original drive signal; a signal modulation unit which modulates the original drive signal to generate a modulation signal; a first signal amplifying unit which amplifies the modulation signal to generate a first amplified modulation signal; a second signal amplifying unit which amplifies the modulation signal to generate a second amplified modulation signal; an amplification control unit which controls operations of the first signal amplifying unit and the second signal amplifying unit; a signal conversion unit which converts the first amplified modulation signal and the second amplified modulation signal into a drive signal; a plurality of piezoelectric elements which is deformed by the drive signal; a plurality of cavities which expands or contracts in accordance with the deformation of the plurality of piezoelectric elements; a plurality of nozzles which communicates with each of cavities

Abstract: A recording apparatus includes a head unit, which includes a driver, and a recording data transmitter that transfers recording data to the head unit via a signal line. The recording apparatus further includes a switching unit in the head unit that switches a driving signal applied to the driver between conductive and nonconductive states based on the transferred recording data, a partition signal output unit in the recording data transmitter that outputs a partition signal that partitions a data signal of the recording data to the head unit in response to switching by the switching unit, and a data selector in the head unit that selects data to be discarded from the transferred recording data based on the partition signal.

Abstract: Provided is a recording method for performing recording by ejecting liquid to a recording medium, the recording method including: preparing a liquid ejection head including an ejection orifice array in which multiple ejection orifices for ejecting the liquid are arranged; and ejecting multiple liquid droplets from the multiple ejection orifices while the recording medium and the liquid ejection head are relatively moved at a speed of 40 inch/s or more to fill a predetermined pixel area on the recording medium with the multiple liquid droplets. A relationship A/12?b?25?A/5 is satisfied, where A (inch/s) represents the speed of the relative movement and b (pl) represents an amount of a liquid droplet ejected by one ejection.

Abstract: In a method to execute a printing interruption in a printing operation, with aid of a sensor, print clock pulses are generated which are supplied to a print controller depending on a feed speed of the printing substrate web. With triggering of the print interruption the feed speed of the printing substrate is reduced from a print speed to a predetermined speed in a slowing ramp, and after the print interruption the printing substrate is accelerated again to the print speed in an acceleration ramp. With aid of the sensor, print clock pulses are generated which are supplied to a print controller depending on the feed speed of the printing substrate. Given occurrence of a print clock pulse during the ramps, with the print controller a vibration cycle is initiated at nozzles of the print head that are not ejecting ink droplets at a time when the vibration cycle is initiated.

Abstract: Included are: a storage unit configured to store profile data in which the amount of landing deviation and the ejection frequency representing the number of ejections of ink droplets per unit time are associated with each other; a correction judgment unit configured to determine whether to allow ejection timing control in print processing by selecting 30 dots as a unit line in an image, adding up a total volume of ink ejected to the unit line, and comparing the total volume of ejected ink with a predetermined threshold; and an ejection control unit configured to obtain the ejection frequency for ejecting ink at a predetermined time interval, from the total volume of ink ejected in the unit line, calculate the amount of landing deviation from the ejection frequency, and control the ejection timing in accordance with the calculated amount of landing deviation.

Abstract: According to one example of the present invention there is provided apparatus for generating control data to control an ink jet printer to print a double-sided image on a single side of a substantially transparent substrate. The apparatus comprises a processor for receiving image data of a first and a second image, a printhead control data generator to generate, from the first image, first image printhead control data, and to generate, from the second image, second image printhead control data, and a covering layer printhead control data generator to generate covering layer printhead control data.

Abstract: In an embodiment, a processor-readable medium stores code representing instructions that when executed by a processor cause the processor to determine a media advance error for each one of multiple page regions on a media page. The instructions further cause the processor to control a media advance mechanism to compensate for the media advance error in each page region.

Abstract: A recording apparatus includes a recording control unit and an adjusting unit. The recording control unit controls a recording head so that a plurality of alignment measuring patterns are recorded between recording areas of images at predetermined intervals with first and second nozzle arrays. The patterns are used to obtain information on the amount of misalignment between a position of recording with the first nozzle array and a position of recording with the second nozzle array. After the patterns are recorded, the images are recorded with the first and second nozzle arrays. In recording images after the recording of the patterns, the adjusting unit adjusts the relative recording positions of the first nozzle array and the second nozzle array on a basis of an amount of misalignment between the recording positions of the first nozzle array and the second nozzle array.

Abstract: A recording apparatus that continuously vary a first boundary formed by different discharge port arrays in an area on a recording medium corresponding to a first overlap portion, and a second boundary formed by different discharge port arrays on an area of the recording medium corresponding to a second overlap portion close to the first overlap portion, wherein a shape of the variation of the first boundary and a shape of the variation of the second boundary are different from each other.

Abstract: A printing apparatus performs printing using a print head in which a plurality of ejection port arrays are arranged in such a way as to form overlap portions. Ink is ejected such that a shape of a first boundary between images printed in a first unit region by ejection ports of a first ejection port array and a second ejection port array in an overlap portion and a shape of a second boundary between images printed in a second unit region in first and second operations of scanning continuously change in an array direction as positions of the first and second boundaries change in a cross direction and the shape of the second boundary becomes different from the shape of the first boundary.

Abstract: The controller has a field discriminating part configured to discriminate an overlap field of a light-shielding ink field and a special glossy ink field, and an ink volume controller configured to allow, in the overlap field, the ink volume of light-shielding ink to be brought lower than the ink volume of the light-shielding ink determined in accordance with the image data, irrespective of the overlap field.

Abstract: A printing apparatus that is an inkjet printing apparatus includes a print head that includes a plurality of nozzles that eject liquid droplets, and prints output data onto a recording medium in a plurality of scans, a storage unit including number of storage areas, the number being determined based on a scheme of the scans, an intermediate data generating unit that generates intermediate data corresponding to an image to be output in each of the scans of the print head from input image data, an intermediate data storing processing unit that stores the intermediate data in different storage areas of the storage unit corresponding to the respective scans of the print head, and an output data converting unit that converts the intermediate data stored in the storage unit into the output data, and sends the output data to the print head.

Abstract: An ink jet recording method includes a first process in which a coloring ink is recorded on a recording medium using an ink jet head so as to form a first image, a second process in which a background ink is recorded using the ink jet head so as to form a background image that covers the first image, and a third process in which a coloring ink is recorded using the ink jet head so as to form a second image, and a drying process is included between the first process and the third process.

Abstract: A reproduction apparatus for printing a digital image includes a control unit and a print engine. The digital image is constituted of pixels, each having assigned a pixel value. The print engine includes print elements for ejecting an amount of marking material on a receiving material according to a pixel value. The reproduction apparatus includes a detector for detecting a failing print element and the control unit includes a derivation unit for deriving, before printing of the digital image for a print element, at least one array of pixel values to be printed by at least one other print element, upon detection of a failing of the print element by the detector. A merging unit is configured to merge at least one of the at least one array of pixel values with the digital image, upon detection of a failing print element, for creating a corrected digital image.

Abstract: A controller determines a correspondence relationship among nozzles in a plurality of nozzle arrays in each head unit so that a positional relationship among nozzles corresponding to the same pixel in each nozzle array becomes the same in all of the head units irrespective of a positional relationship between nozzles having the same number in order from one side in a main scanning direction in two nozzle arrays in each head unit.

Abstract: A method for operating an inkjet printer includes forming a printed mark with a plurality of inkjets in a printhead, generating scanned image data of the printed mark, and modifying an image data correction parameter and firing signal waveform parameter for one of the inkjets to correct a process direction registration error between the locations of ink drops from the one inkjet and the location of the printed mark. The image data correction parameter modifies the location of ink drops from the one inkjet by an integer number of pixels and the firing signal waveform parameter modifies the location of ink drops from the one inkjet by a fractional pixel to enable registration of the inkjet.

Abstract: An image forming device which includes a first nozzle group, a second nozzle group, and are arranged by being deviated from the first nozzle group to one side in a predetermined direction, a light irradiation unit which is extended at least in the predetermined direction, a control unit which repeats an ejection operation in which the photo-curable ink is ejected from the nozzle while moving the nozzle group and the light irradiation unit in a direction intersecting the predetermined direction, and a transport operation of the medium in a state where a non-ejection region where the ink is not ejected is provided between the first nozzle group and the second nozzle group in a predetermined direction, and overlappingly forms a main image using the first photo-curable ink, and a background image using the second photo-curable ink.

Abstract: An inkjet printer includes nozzle rows aligned along a printing direction along which printing on a print medium is executed, and a controller configured to control ejection of the ink droplets from the nozzle rows. The nozzle rows include a pair of an upstream nozzle row and a downstream nozzle row. The upstream nozzle row is positioned just upstream from the downstream nozzle row along the printing direction. The controller controls ejection of the ink droplets from the upstream nozzle row and the downstream nozzle row so that propulsive forces applied to ink droplets ejected from the downstream nozzle row are made larger, based on image data associated with the upstream nozzle row, than propulsive forces applied to ink droplets ejected from the upstream nozzle row. The inkjet printer can restrict degradation of print quality by landing the ink droplets ejected from the downstream nozzle at their target positions.