Abstract: In printing of multi-level darkness/lightness of a certain color, which is performed with a dark ink and a light ink of the certain color, graininess is improved. A printing method includes generating a plurality of types of drive signals, and ejecting the dark ink and the light ink from a head, an amount of each ink varying for each dot tone value. In generation of a plurality of the types of the drive signals, a plurality of the types of drive signals are generated, where a waveform section that is for the dark ink of the certain color and that corresponds to a minimum dot tone value in ejection of ink is different from a waveform section that is for the light ink of the certain color and that corresponds to the minimum dot tone value, and where a waveform section that is for the dark ink of the certain color and that corresponds to a maximum dot tone value is different from a waveform section that is for the light ink of the certain color and that corresponds to the maximum dot tone value.

Abstract: The present invention provides a printing method including: (A) converting a tone value indicating a tone of a certain color to a first light tone value indicating a tone of a light color using a predetermined number of tones, and a first dark tone value indicating a tone of a dark color using a predetermined number of tones; (B) converting the first light tone value to a second light tone value indicating a tone of the light color with a smaller number of tones than the predetermined number of tones, based on a table for the light color; (C) converting the first dark tone value to a second tone value indicating a tone of the dark color with a smaller number of tones than the predetermined number of tones, based on a table for the dark color other than the table for the light color; (D) ejecting a light ink based on the second light tone value to form a light dot in the light ink on a medium, ejecting a dark ink based on the second dark tone value to form a dark dot in the dark ink on the medium, and expressi

Abstract: A printing method includes: printing an image to be printed on a medium by repeating alternately a dot forming process for forming dots on the medium by ejecting ink from each nozzle of a plurality of nozzles, and a carrying process for carrying the medium in a carrying direction, and forming a plurality of rows of dots, lined up in the carrying direction, that are configured by a plurality of dots lined up in a movement direction; selecting a printing mode according to the number of the dots to be formed in a predetermined region of the medium, from among a plurality of the printing modes each with a different ratio of the number of dot rows formed using a different number of nozzles to the number of dot rows formed using a certain number of nozzles; and printing on the region to be printed based on the selected printing mode.

Abstract: A liquid ejection method includes: (A) moving nozzles relative to a medium, (B) ejecting liquid from the nozzles while the nozzles are moving relative to the medium, (C) forming a first pattern on the medium with the liquid ejected from the nozzles at either one of a timing delayed from a certain reference timing by a predetermined interval and a timing preceding the certain reference timing by a predetermined interval while the nozzles are moving in a certain direction with respect to the medium, and (D) when the first pattern has been formed on the medium with the liquid ejected from the nozzles at the timing delayed by the predetermined interval, forming a second pattern on the medium with the liquid ejected from the nozzles at a timing delayed from the certain reference timing by an interval equal to the predetermined interval while the nozzles are moving in a direction opposite to the certain direction with respect to the medium, and when the first pattern has been formed on the medium with the liquid ej

Abstract: A forming method of an adjustment pattern is characterized by forming a first adjustment pattern on a medium by ejecting liquid onto the medium from a part of a plurality of nozzles that are arranged along a direction in which the medium is transported and that eject the liquid onto the medium while moving relative to the medium, and subsequently, after transporting the medium, forming a second adjustment pattern on the medium by ejecting the liquid onto the medium from nozzles other than the part of the plurality of nozzles, the second adjustment pattern being lined up in a movement direction of the nozzles with respect to the first adjustment pattern.

Abstract: [Task] To improve the quality of an image formed by a liquid ejecting apparatus capable of performing a bi-direction printing process. [Means for Resolution] A raster (POL raster) formed by a partial overlap (POL) is formed such that pixels (first type of dots) formed upon a going movement and pixels (second type of dots) formed upon a coming movement are alternately arranged. The first type of dots and the second type of dots can be alternately formed by controlling an amount of transport of a print sheet and an amount of feed in a horizontal direction (main scanning direction) of a recording head. In this way, it is possible to alternately form the dots formed in opposing filling directions in the POL raster. By changing the allocation of the POL nozzles in an odd-numbered pass and an even-numbered pass and performing an anomalous feeding process of the print sheet, it is possible to change a combination of the POL nozzles forming the POL raster.

Abstract: A liquid ejecting apparatus for forming a multicolored image on a recording medium includes: a printing head for ejecting a plurality of colors; a head driving section that performs a main scanning for moving the printing head in a main scanning direction; a transporting section that transports the recording medium in a sub-scanning direction crossing the main scanning direction; and a dot control section that controls the head driving section and the transporting section so as to form an image on the recording medium by ejecting the liquids on the recording medium from the nozzle while repeatedly performing the main scanning for moving the printing head in the main scanning direction and a sub-scanning for transporting the recording medium in the sub-scanning direction.

Abstract: A liquid ejection method includes: (A) moving nozzles relative to a medium, (B) ejecting liquid from the nozzles while the nozzles are moving relative to the medium, (C) forming a first pattern on the medium with the liquid ejected from the nozzles at either one of a timing delayed from a certain reference timing by a predetermined interval and a timing preceding the certain reference timing by a predetermined interval while the nozzles are moving in a certain direction with respect to the medium, and (D) when the first pattern has been formed on the medium with the liquid ejected from the nozzles at the timing delayed by the predetermined interval, forming a second pattern on the medium with the liquid ejected from the nozzles at a timing delayed from the certain reference timing by an interval equal to the predetermined interval while the nozzles are moving in a direction opposite to the certain direction with respect to the medium, and when the first pattern has been formed on the medium with the liquid ej

Abstract: An object is to achieve printing of clear ink with a simple configuration and without increasing the printing time. A printing apparatus, a printing method, and a print head for discharging droplets of ink having color material to a medium at a predetermined resolution, and discharging droplets of ink not having color material to the medium at a resolution that is different from the predetermined resolution are achieved.

Abstract: The present invention provides a printing method including: (A) converting a tone value indicating a tone of a certain color to a first light tone value indicating a tone of a light color using a predetermined number of tones, and a first dark tone value indicating a tone of a dark color using a predetermined number of tones; (B) converting the first light tone value to a second light tone value indicating a tone of the light color with a smaller number of tones than the predetermined number of tones, based on a table for the light color; (C) converting the first dark tone value to a second tone value indicating a tone of the dark color with a smaller number of tones than the predetermined number of tones, based on a table for the dark color other than the table for the light color; (D) ejecting a light ink based on the second light tone value to form a light dot in the light ink on a medium, ejecting a dark ink based on the second dark tone value to form a dark dot in the dark ink on the medium, and expressi

Abstract: In printing of multi-level darkness/lightness of a certain color, which is performed with a dark ink and a light ink of the certain color, graininess is improved. A printing method includes generating a plurality of types of drive signals, and ejecting the dark ink and the light ink from a head, an amount of each ink varying for each dot tone value. In generation of a plurality of the types of the drive signals, a plurality of the types of drive signals are generated, where a waveform section that is for the dark ink of the certain color and that corresponds to a minimum dot tone value in ejection of ink is different from a waveform section that is for the light ink of the certain color and that corresponds to the minimum dot tone value, and where a waveform section that is for the dark ink of the certain color and that corresponds to a maximum dot tone value is different from a waveform section that is for the light ink of the certain color and that corresponds to the maximum dot tone value.

Abstract: A printing method includes: printing an image to be printed on a medium by repeating alternately a dot forming process for forming dots on the medium by ejecting ink from each nozzle of a plurality of nozzles, and a carrying process for carrying the medium in a carrying direction, and forming a plurality of rows of dots, lined up in the carrying direction, that are configured by a plurality of dots lined up in a movement direction; selecting a printing mode according to the number of the dots to be formed in a predetermined region of the medium, from among a plurality of the printing modes each with a different ratio of the number of dot rows formed using a different number of nozzles to the number of dot rows formed using a certain number of nozzles; and printing on the region to be printed based on the selected printing mode.

Abstract: Each nozzle array on a print head 28b has a plurality of nozzles arranged along sub-scanning direction for discharging a same ink, and at least a pair of nozzle arrays that discharge different inks (a leading nozzle array FN and a trailing nozzle array RN) are arranged in a staggered manner. In an interlace recording using this print head 28b, a reference is made to a printing data memory prior to a main scan pass, for a printing data of a plurality of main scan lines that correspond to an overall width in the sub-scanning direction of the staggered nozzle array pair. A single main scan pass is then performed according to the referenced printing data.

Abstract: Each nozzle array on a print head 28b has a plurality of nozzles arranged along sub-scanning direction for discharging a same ink, and at least a pair of nozzle arrays that discharge different inks (a leading nozzle array FN and a trailing nozzle array RN) are arranged in a staggered manner. In an interlace recording using this print head 28b, a reference is made to a printing data memory prior to a main scan pass, for a printing data of a plurality of main scan lines that correspond to an overall width in the sub-scanning direction of the staggered nozzle array pair. A single main scan pass is then performed according to the referenced printing data.

Abstract: An object is to achieve printing of clear ink with a simple configuration and without increasing the printing time. A printing apparatus, a printing method, and a print head for discharging droplets of ink having color material to a medium at a predetermined resolution, and discharging droplets of ink not having color material to the medium at a resolution that is different from the predetermined resolution are achieved.

Abstract: Each nozzle array on a print head 28b has a plurality of nozzles arranged along sub-scanning direction for discharging a same ink, and at least a pair of nozzle arrays that discharge different inks (a leading nozzle array FN and a trailing nozzle array RN) are arranged in a staggered manner. In an interlace recording using this print head 28b, a reference is made to a printing data memory prior to a main scan pass, for a printing data of a plurality of main scan lines that correspond to an overall width in the sub-scanning direction of the staggered nozzle array pair. A single main scan pass is then performed according to the referenced printing data.

Abstract: The printing apparatus of the present invention allows dots to be formed after being selected from dot types whose number is greater than the number of gradations in each of the pixels constituting print data received from outside the printing apparatus. In the process, dots are formed for each gradation value after being selected from a plurality of types of dots having different sizes and/or formation positions such that the outlines contained in the printed image are smoothed, making it possible to smooth the outlines of line drawings while minimizing any increase in the volume of data transmitted from the outside and believed to cause a reduction in the printing speed.

Abstract: A printing method drives each of the n(j) number of nozzles to enable the nozzle to form dots intermittently at a rate of one in m×q dot positions on the j-th main scan line during one main scan, where m is an integer of 1 or more, and q is an integer of 2 or more, to thereby complete dot formation on the j-th main scan line with the n(j) number of nozzles during n(j) number of main scans. The printing method attains high recording speed and high image quality, comparing to cases when all main scan lines are recorded using a fixed number of nozzles.

Abstract: The present invention is a printing method of recording tones of pixels on the print medium by forming ink dots. The method records tones of pixels such that adjacent pixels in the main scan direction are recorded during different main scans, respectively. This printing method attains sharp images of line-drawing including a text image.

Abstract: Outline bleeding of printed images can be reduced in a printer in which ink dots are formed on a print medium, because the amount of ink contained in the dots for forming boundary lines, which bleed easily, is reduced by skipping some dots or varying the dot size. As a result, texts and other printed images having sharply defined outlines can be printed with high legibility.