Abstract: An object of the present invention is to efficiently perform a reading operation for printing position adjustment with high accuracy. A printing apparatus prints, on a print medium, adjustment patterns for adjusting a printing position on the print medium and corresponding respectively to printing position adjustment items. In this printing, the printing apparatus prints the adjustment patterns while conveying the print medium in a forward direction with a conveying unit. Then, the conveying unit conveys the print medium in a backward direction until the adjustment patterns are moved beyond a reading position of a reading unit in the backward direction. Thereafter, the conveying unit conveys the print medium in the forward direction again to cause the adjustment patterns to reach the reading position. Thereafter, the reading unit reads the adjustment patterns continuously at the reading position while the conveying unit conveys the print medium in the forward direction.

Abstract: An object of the present invention is to efficiently perform a reading operation for printing position adjustment with high accuracy. A printing apparatus prints, on a print medium, adjustment patterns being for adjusting a printing position on the print medium and corresponding respectively to printing position adjustment items. In this printing, the printing apparatus prints the adjustment patterns while conveying the print medium in a forward direction with a conveying unit. Then, the conveying unit conveys the print medium in a backward direction until the adjustment patterns are moved beyond a reading position of a reading unit in the backward direction. Thereafter, the conveying unit conveys the print medium in the forward direction again to cause the adjustment patterns to reach the reading position. Thereafter, the reading unit reads the adjustment patterns continuously at the reading position while the conveying unit conveys the print medium in the forward direction.

Abstract: Recording data for recording an achromatic color image having a high lightness is generated as follows. A first color material and a second color material which has a hue complementary to that of the first color material are used to record the image. Recording data is generated such that a recording amount of the first color material and a recording amount of the second color material are larger than a recording amount of another color material, and such that a pixel where it is determined that the first color material is to be recorded and a pixel where it is determined that the second color material is to be recorded are at positions different from each other.

Abstract: An image printing apparatus can print an image in which graininess is suppressed while using a color material of light blue. To achieve this, the color material of light blue satisfies the following condition. ?LB?(?LC??LB)>0 and ?LB?(?LM??LB)>0 Here, ?LC represents a difference in lightness between cyan ink and a blank area, ?LM represents a difference in lightness between magenta ink and the blank area, and ?LB represents a difference in lightness between light blue ink and the blank area. Further, the color material of light blue satisfies the following condition. hC+(h(C+M)?hC)/2?hB?hM?(hM?h(C+M))/2 Here, hC represents a hue of the cyan ink, hM represents a hue of the magenta ink, h(C+M) represents a hue of the image printed with the cyan ink and the magenta ink in the same amount, and hB represents a hue of the light blue ink.

Abstract: Recording data for recording an achromatic color image having a high lightness is generated as follows. A first color material and a second color material which has a hue complementary to that of the first color material are used to record the image. Recording data is generated such that a recording amount of the first color material and a recording amount of the second color material are larger than a recording amount of another color material, and such that a pixel where it is determined that the first color material is to be recorded and a pixel where it is determined that the second color material is to be recorded are at positions different from each other.

Abstract: A light blue ink discharge opening array unit is located between cyan ink discharge opening array units, between the magenta ink discharge opening array units, and not between the black ink discharge opening array unit.

Abstract: A discharge port array unit including discharge ports having a small discharge port diameter is not arranged in a position adjacent to a discharge port array unit generating a strong airflow, and a discharge port array unit including discharge port array having not a small discharge port diameter is arranged in the position adjacent to the discharge port array unit generating a strong airflow.

Abstract: Driving orders of driving blocks are controlled with regard to each of multiple types of ink so that landing positions of ink from the driving blocks differ in multiple scans, and in the mask patterns used, there is a relatively small number of superimposed pixels among pixels regarding which a large number of discharge permitted has been stipulated regarding a mask pattern corresponding to one type of ink and one scan and pixels regarding which a large number of discharge permitted has been stipulated regarding a mask pattern corresponding to another type of ink and the one scan.

Abstract: An image printing apparatus can print an image in which graininess is suppressed while using a color material of light blue. To achieve this, the color material of light blue satisfies the following condition. ?LB?(?LC??LB)>0 and ?LB?(?LM??LB)>0 Here, ?LC represents a difference in lightness between cyan ink and a blank area, ?LM represents a difference in lightness between magenta ink and the blank area, and ?LB represents a difference in lightness between light blue ink and the blank area. Further, the color material of light blue satisfies the following condition. hC+(h(C+M)?hC)/2?hB?hM?(hM?h(C+M))/2 Here, hC represents a hue of the cyan ink, hM represents a hue of the magenta ink, h(C+M) represents a hue of the image printed with the cyan ink and the magenta ink in the same amount, and hB represents a hue of the light blue ink.

Abstract: A light blue ink discharge opening array unit is located between cyan ink discharge opening array units, between the magenta ink discharge opening array units, and not between the black ink discharge opening array unit.

Abstract: An image printing apparatus can print an image in which graininess is suppressed while using a color material of light blue. To achieve this, the color material of light blue satisfies the following condition. ?LB?(?LC??LB)>0 and ?LB?(?LM??LB)>0 Here, ?LC represents a difference in lightness between cyan ink and a blank area, ?LM represents a difference in lightness between magenta ink and the blank area, and ?LB represents a difference in lightness between light blue ink and the blank area. Further, the color material of light blue satisfies the following condition. hC+(h(C+M)?hC)/2?hB?hM?(hM?h(C+M))/2 Here, hC represents a hue of the cyan ink, hM represents a hue of the magenta ink, h(C+M) represents a hue of the image printed with the cyan ink and the magenta ink in the same amount, and hB represents a hue of the light blue ink.

Abstract: A discharge port array unit including discharge ports having a small discharge port diameter is not arranged in a position adjacent to a discharge port array unit generating a strong airflow, and a discharge port array unit including discharge port array having not a small discharge port diameter is arranged in the position adjacent to the discharge port array unit generating a strong airflow.

Abstract: Recording is performs that suppresses ink discharge position deviation between scans while suppressing graininess in a case of using multiple types of ink.

Abstract: A recording apparatus includes a recording head including a plurality of recording elements arranged in a predetermined direction, and a determination unit configured to determine a first mode in which a specified image is recorded or a second mode in which a pattern is recorded in each of recording scannings in forward and backward directions to form an adjustment pattern for adjusting a recording position in the intersecting direction of the recording head, and the recording position of the recording head in accordance with the formed adjustment pattern is adjusted, in which a driving unit controls driving of the recording elements in a manner that a correspondence relationship between positions in the predetermined direction and the intersecting direction among a plurality of dots that form the same column is varied or is the same in the recording scannings in the forward and backward directions in accordance with the determined mode.

Abstract: The driving order of driving blocks is controlled so that ink landing positions from driving blocks differ from each other in multiple scans. Recording data is generated so that, of pixels where ink is discharged in one scan, the number of pixels adjacent at both sides in the scanning direction to pixels where ink is discharged in another scan is greater than the number of pixels not adjacent at both sides in the scanning direction to pixels where ink is discharged the other scan.

Abstract: A dental syringe that facilitates the expulsion of air from a syringe body when dental material is injected into the syringe body from a discharge port of the syringe body and the discharge of the dental material from the syringe body during use for treatment. The syringe includes a syringe body, a plunger, and an O-ring that is mounted in an engagement groove formed at a front end portion of the plunger. The engagement groove includes a shallow groove at the front end side and a deep groove at the rear end side. When the dental material is injected into the syringe body, the O-ring engages with the shallow groove, and when discharging the dental material, the O-ring engages with the deep groove.

Abstract: In a printing apparatus including a printhead and a print control unit, wherein the printhead includes two nozzle arrays, each arranged in a first direction and including nozzles arranged along a second direction, the print control unit performs a first operation of expanding print data onto a memory, a second operation of selecting, for each nozzle array, some of the nozzles as non-driving nozzles and the remaining nozzles as driving nozzles, and a third operation of distributing the expanded print data to the two nozzle arrays such that dots corresponding to the non-driving nozzles of one nozzle array are printed by the driving nozzles of the other nozzle array.

Abstract: Driving orders of driving blocks are controlled with regard to each of multiple types of ink so that landing positions of ink from the driving blocks differ in multiple scans, and in the mask patterns used, there is a relatively small number of superimposed pixels among pixels regarding which a large number of discharge permitted has been stipulated regarding a mask pattern corresponding to one type of ink and one scan and pixels regarding which a large number of discharge permitted has been stipulated regarding a mask pattern corresponding to another type of ink and the one scan.

Abstract: A printing apparatus comprising a printhead including two nozzle arrays neighboring in a first direction, each array including nozzles arrayed in a second direction, a determining unit for determining discharge nozzles and non-discharge nozzles for each array, a conveying unit for conveying a sheet to the first direction, a unit configured to perform (a) determining printing data such that dots corresponding to the non-discharge nozzles in one array are printed by the discharge nozzles in another array, (b) inserting null data into the printing data based on a shift amount of between printing positions of the two nozzle array, and (c) newly determining discharge nozzles and non-discharge nozzles by the determining unit based on the printing data including the null data.

Abstract: A recording apparatus includes a recording head including a plurality of recording elements arranged in a predetermined direction, and a determination unit configured to determine a first mode in which a specified image is recorded or a second mode in which a pattern is recorded in each of recording scannings in forward and backward directions to form an adjustment pattern for adjusting a recording position in the intersecting direction of the recording head, and the recording position of the recording head in accordance with the formed adjustment pattern is adjusted, in which a driving unit controls driving of the recording elements in a manner that a correspondence relationship between positions in the predetermined direction and the intersecting direction among a plurality of dots that form the same column is varied or is the same in the recording scannings in the forward and backward directions in accordance with the determined mode.