Abstract: A document platen on which a document is placed; and a reading sensor having a light source for irradiating the document with light, are provided, and the reading sensor performs first scanning for irradiating the document with light at a first light quantity, and then performs second scanning for irradiating the document with light at a second light quantity greater than the first light quantity.

Abstract: There is provided a flat head type image reading device configured to scan a standard size document including an A4 size, the image reading device including: a document pressing section pressing the standard size document and made of an elastic member, in which the document pressing section has fixing members, and the fixing members are arranged at positions corresponding to end portions of the standard size document.

Abstract: A document platen on which a document is placed; and a reading sensor having a light source for irradiating the document with light, are provided, and the reading sensor performs first scanning for irradiating the document with light at a first light quantity, and then performs second scanning for irradiating the document with light at a second light quantity greater than the first light quantity.

Abstract: An image reading apparatus includes a first sensor that reads a first area of an image, a second sensor that reads a second area, and a processing circuit that generates a merge image by performing a merge process on first image data acquired by reading by the first sensor and second image data acquired by reading by the second sensor. The processing circuit calculates a correction value having a tendency of approaching zero as being away from an overlap area between the first area and the second area based on a reading result acquired by reading the overlap area by the first sensor and a reading result acquired by reading by the second sensor, and generates the merge image by performing an offset process using the correction value.

Abstract: A controller 60 of an image reading device 1 acquires a scanned image by reading a document. An image processor 30 generates an output image by applying to the acquired scanned image different image processes based on whether or not specific pixels, which are pixels with a pixel value greater than a white reference value, are contained in the scanned image.

Abstract: A controller 60 of an image reading device acquires a scanned image by reading a document, and identifies in the scanned image a fluorescent color area containing specific pixels, which are pixels having a pixel value greater than the white reference value. An image processor 40 generates output information including an output image based on the acquired scanned image, and information identifying a fluorescent color area.

Abstract: An image reading apparatus includes a first sensor that reads a first area of an image, a second sensor that reads a second area, and a processing circuit that generates a merge image by performing a merge process on first image data acquired by reading by the first sensor and second image data acquired by reading by the second sensor. The processing circuit calculates a correction value having a tendency of approaching zero as being away from an overlap area between the first area and the second area based on a reading result acquired by reading the overlap area by the first sensor and a reading result acquired by reading by the second sensor, and generates the merge image by performing an offset process using the correction value.

Abstract: A method for setting a voltage applied to a head in an ink jet printer including the head that discharges ink according to an applied voltage includes a step of forming a test pattern on a medium by the ink discharged from the head, a step of measuring a film thickness of the test pattern, and a step of setting a voltage to be applied to the head based on the measured film thickness.

Abstract: A printing apparatus of the invention includes a medium information acquisition section that acquires medium information that can specify a type of a print medium, a printing section that discharges print ink to the print medium, a coating section that coats the print medium with precoat liquid before the printing section performs printing, and a coating control section that controls the coating section. The coating control section variably changes an amount of coating of the precoat liquid per unit area according to the acquired medium information.

Abstract: A printing apparatus of the invention includes a medium information acquisition section that acquires medium information that can specify a type of a print medium, a printing section that discharges print ink to the print medium, a coating section that coats the print medium with precoat liquid before the printing section performs printing, and a coating control section that controls the coating section. The coating control section variably changes an amount of coating of the precoat liquid per unit area according to the acquired medium information.

Abstract: A method for setting a voltage applied to a head in an ink jet printer including the head that discharges ink according to an applied voltage includes a step of forming a test pattern on a medium by the ink discharged from the head, a step of measuring a film thickness of the test pattern, and a step of setting a voltage to be applied to the head based on the measured film thickness.

Abstract: A method for calculating a compensation value for use in a correction of a liquid landing position in a liquid ejection device provided with a first head for ejecting a first colored liquid and a second head for ejecting a transparent liquid includes, when forming a test pattern on a medium, forming the test pattern by feeding the first colored liquid to the second head and causing the second head to eject the first colored liquid, and obtaining a compensation value for a correction of a landing position of a liquid ejected by the second head on the basis of the test pattern formed on the medium.

Abstract: A liquid discharge apparatus which causes a liquid to be discharged through a first nozzle by applying a driving signal to a first driving element, and causes a liquid to be discharged through a second nozzle by applying the driving signal to a second driving element, and which, with respect to the first nozzle, determines on the basis of an image formed by causing the liquid to be discharged through the first nozzle whether or not the first nozzle causes a liquid discharge failure, and, with respect to the second nozzle, determines on the basis of a detection signal which is obtained by applying the driving signal to the second driving element whether or not the second nozzle corresponding to the second driving element causes a liquid discharge failure.

Abstract: There is provided a method of acquiring a correction value of a liquid discharging apparatus that includes a first nozzle row, a second nozzle row, a third nozzle row, and a fourth nozzle row, the method includes: acquiring the amount of deviation (heterogeneous row error) of a dot formed by the third nozzle row in the predetermined direction, acquiring the amount of deviation (overlapping area error) between the dot formed by the third nozzle row and a dot formed by the fourth nozzle row in the predetermined direction, and acquiring a correction value which causes discharge data assigned to the fourth nozzle row to shift in the predetermined direction based on the heterogeneous row error and the overlapping area error.

Abstract: There is provided a method of acquiring a correction value of a liquid discharging apparatus that includes a first nozzle row, a second nozzle row, a third nozzle row, and a fourth nozzle row, the method includes: acquiring the amount of deviation (heterogeneous row error) of a dot formed by the third nozzle row in the predetermined direction, acquiring the amount of deviation (overlapping area error) between the dot formed by the third nozzle row and a dot formed by the fourth nozzle row in the predetermined direction, and acquiring a correction value which causes discharge data assigned to the fourth nozzle row to shift in the predetermined direction based on the heterogeneous row error and the overlapping area error.

Abstract: A method for calculating a compensation value for use in a correction of a liquid landing position in a liquid ejection device provided with a first head for ejecting a first colored liquid and a second head for ejecting a transparent liquid includes, when forming a test pattern on a medium, forming the test pattern by feeding the first colored liquid to the second head and causing the second head to eject the first colored liquid, and obtaining a compensation value for a correction of a landing position of a liquid ejected by the second head on the basis of the test pattern formed on the medium.

Abstract: A liquid discharge apparatus which causes a liquid to be discharged through a first nozzle by applying a driving signal to a first driving element, and causes a liquid to be discharged through a second nozzle by applying the driving signal to a second driving element, and which, with respect to the first nozzle, determines on the basis of an image formed by causing the liquid to be discharged through the first nozzle whether or not the first nozzle causes a liquid discharge failure, and, with respect to the second nozzle, determines on the basis of a detection signal which is obtained by applying the driving signal to the second driving element whether or not the second nozzle corresponding to the second driving element causes a liquid discharge failure.

Abstract: A discharge defect detecting device including a sensor that reads image, which has been formed on a medium by moving nozzles relative to the medium in a relative movement direction and discharging a fluid, at a reading resolution lower than the resolution of an image data in the relative movement direction, based on the image data; a standard data forming unit that forms a standard data having the same resolution as the reading resolution in the relative movement direction, based on the image data; and a detecting unit that compares a plurality of the reading data pixels on the same row in the relative movement direction in the data read by the sensor with a plurality of standard data pixels each corresponding to the plurality of the reading data pixels in the standard data, to detect the discharge defects of the nozzles.

Abstract: A printing apparatus includes a printing unit which prints a plurality of test regions under a plurality of different print conditions by a printing head, a loading unit which applies a physical load to each of the test regions, a reading unit which reads an image on each of the test regions to which the load has been applied, and a determining unit which determines a print condition suitable for printing among the plurality of different print conditions based on the read image on each of the test regions.

Abstract: A failing nozzle detecting apparatus includes a reference image generating unit that generates plural pieces of reference image data with pixel positions along a transporting direction respectively shifted by different offsets based on image data, and a scanning unit that scans an image on the print medium relatively transported by the transporting unit to generate scanned image data. The failing nozzle detecting apparatus selects reference image data to be used in comparison with the scanned image data from the plural pieces of reference image data. The failing nozzle detecting apparatus detects a failing nozzle from the plurality of nozzles based on the comparison of the scanned image data with the selected reference image data.