Abstract: It is an object of the invention to achieve a liquid ejection control method and the like that allows the amount of consumed liquid to be reduced. The liquid ejection control method controls the ejection of liquid, from nozzles for ejecting liquid, onto a medium that is fed in a predetermined feed direction, and has a step of detecting a portion of the medium that is positioned on an upstream side in said feed direction, and a step of not ejecting liquid from nozzles of a plurality of nozzles that are located on the upstream side in the feed direction based on the results of the detection.

Abstract: It is an object of the invention to achieve a liquid ejection control method and the like that allows the amount of consumed liquid to be reduced. The liquid ejection control method controls the ejection of liquid, from nozzles for ejecting liquid, onto a medium that is fed in a predetermined feed direction, and has a step of detecting a portion of the medium that is positioned on an upstream side in said feed direction, and a step of not ejecting liquid from nozzles of a plurality of nozzles that are located on the upstream side in the feed direction based on the results of the detection.

Abstract: A cap 41 is used for nozzle inspections for clogging on the basis of a waveform of an output signal at a print head 24 when, in a state in which a potential difference has been generated among the print head 24, a regulating member 143 that is the opposing electrode opposite to the print head 24, or an ink-absorbing member 142, an operation is performed of ejecting ink from the nozzles 23 of the print head 24 to an opposing electrode. The cap 41 comprises a box member 141 in which the regulating member 143 and the ink-absorbing member 142 are contained and an electrode pin 145 that penetrates the box member 141 in a liquid-tight manner, and that is electrically connected with the regulating member 143. Thus, even when ink accumulates in the box member 141 after a nozzle inspection for clogging has taken place, no ink will leak from the part that the electrode pin 145 penetrates.

Abstract: A printing apparatus of the invention has an ejection head for ejecting ink droplets to form dots on a printing medium. The printing apparatus is capable of printing a correction pattern on the printing medium with the ejection head, the correction pattern having a plurality of sub-patterns for correcting a misalignment between a position at which dots are formed during a forward pass through which the head is moved and a position at which dots are formed during a return pass through which the head is moved, and correcting the misalignment based on two or more sub-patterns that stand out in density among the plurality of sub-patterns.

Abstract: Ejection testing of a clear ink ejecting section is carried out easily. A clear ink is ejected toward a medium from a clear ink ejecting section for ejecting clear ink, and a color ink is ejected to a region in which the clear ink is to be adhering from a color ink ejecting section for ejecting color ink. A test pattern used for testing ejection of the clear ink ejecting section is formed on the medium by the clear ink and the color ink.

Abstract: A printing apparatus comprises an ejection head for selectively ejecting ink droplets of a plurality of sizes to form dots on a printing medium. The printing apparatus is capable of printing a correction pattern on the printing medium, the correction pattern enabling correction of a misalignment between a position at which dots are formed during a forward pass through which the head is moved and a position at which dots are formed during a return pass through which the head is moved, and a spacing in a sub-scanning direction between dots that make up the correction pattern printed by ejecting ink droplets of a certain size from the ejection head is different from a spacing in the sub-scanning direction between dots that make up the correction pattern printed by ejecting ink droplets of a different size from the ejection head.

Abstract: A liquid ejection method of ejecting liquid from a movable ejection head onto a medium comprises the steps of: detecting a position of an end of the medium; and changing, according to a feed amount of the medium fed after the position of the end of the medium has been detected, at least either a starting position or a terminating position for ejecting the liquid from the ejection head being moved.

Abstract: A liquid ejection apparatus, a liquid ejection system, and a liquid ejection method are achieved which allow starting and ending positions for ejecting liquid to be set appropriately. A controller is provided which executes position determination control for determining at least one of the starting position and the ending position for ejecting liquid from a moving ejection head onto a medium that is fed by a feed mechanism, wherein the position determination control by the controller differs for when ejecting the liquid from the ejection head to a region within a predetermined range from a front edge or a rear edge, in a feed direction, of the medium, and for when ejecting the liquid from the ejection head to a central region, in the feed direction, of the medium.

Abstract: A recording start position is obtained effectively with high precision and in a short time.

Abstract: Ejection testing of a clear ink ejecting section is carried out easily. A first test pattern, which is used for testing ejection of a color ink ejecting section, is formed by ejecting a color ink onto a medium from the color ink ejecting section for ejecting color ink; and a second test pattern, which is used for testing ejection of a clear ink ejecting section, is formed by ejecting a clear ink from the clear ink ejecting section for ejecting clear ink to form a clear ink pattern on the medium, and ejecting a color ink from the color ink ejecting section to form a color ink pattern that overlaps the clear ink pattern. The resolution of the color ink pattern is different from the resolution of the first test pattern.

Abstract: A liquid ejection method of ejecting liquid from a movable ejection head onto a medium comprises the steps of: detecting a position of an end of the medium; and changing, according to a feed amount of the medium fed after the position of the end of the medium has been detected, at least either a starting position or a terminating position for ejecting the liquid from the ejection head being moved.

Abstract: A recording start position is obtained effectively with high precision and in a short time.

Abstract: The print start position, in a predetermined direction, of a medium to be printed is determined with high precision and efficiency.

Abstract: A printing apparatus according to the present invention includes a movable head that performs recording on a medium using ink; a first sensor that can move together with said head and that detects regular reflection light from said medium; and a second sensor that is provided separately from said first sensor, that can move together with said head and that detects diffuse reflection light from said medium.

Abstract: A determining method and the like is achieved for determining more accurately whether or not ink has been ejected. A determining method for determining whether or not ink was ejected from a plurality of nozzles includes a step of printing a non-ejection print pattern, a step of obtaining an output value upon non-ejection that is output based on the light that has been emitted toward the non-ejection print pattern, a step of printing an all-ejection print pattern, a step of obtaining an output value upon ejection that is output based on the light emitted toward the all-ejection print pattern, a step of setting a threshold value between the output value upon non-ejection and the output value upon ejection, and a step of comparing the threshold value with an output value that is output from a light-receiving section based on the light that has been emitted toward the print patterns.

Abstract: A liquid ejecting apparatus etc. creating no blank space on a medium is achieved. The liquid ejecting apparatus has: a movable ejection head for ejecting a liquid; a feed mechanism for feeding a medium; and detecting means for detecting a position of an edge of the medium; wherein the apparatus repeats an operation of detecting the position of the edge with the detecting means, an operation of feeding the medium with the feed mechanism, and an operation of ejecting the liquid onto the medium from the moving ejection head; in accordance with the position of the edge that has been detected, the apparatus changes at least either one of a start position and an end position for ejecting the liquid from the moving ejection head; and if the position of the edge was not detected, the apparatus sets the start position or the end position to a position that has been established in advance.

Abstract: The present invention relates to a liquid ejecting apparatus including: a movable head provided with a plurality of nozzles for ejecting a liquid; a carry unit for carrying a medium in a predetermined carrying direction; and a sensor for detecting an edge of the medium, the liquid ejecting apparatus controlling ejection of the liquid from the plurality of nozzles in accordance with a result of the detection of the sensor. In this liquid ejecting apparatus, the position, in the carrying direction, of the sensor is at the same position of or on an upstream side of a nozzle located most upstream in the carrying direction, of among the plurality of nozzles. In this way, it is possible to arrange the sensor for detecting the edge of the paper at the most suitable position, and to suppress waste of ink that is ejected from the nozzles.

Abstract: An object is to acquire the precise width dimension of a medium that is loaded into a paper feed section of a printing apparatus and that has a size other than the standard sizes. The printing apparatus includes *a paper feed section into which media are loaded, a regulating guide provided movably for regulating positional shifting of the media in close proximity to the edge of the loaded media, and a position sensor capable of detecting any given position of the regulating guide.

Abstract: A printing apparatus comprises feeding means, light-emitting means, and a light-receiving sensor, and is capable of detecting a change in an output value of the light-receiving sensor that is caused by the medium to be printed, which has been fed by the feeding means, blocking the light, which has been emitted by the light-emitting means, wherein, by moving the light-emitting means and the light-receiving sensor in a main scanning direction, the printing apparatus detects, at a plurality of positions, changes in the output value that are caused by an upper or lower edge of the medium to be printed blocking the light, and based on a result of the detection, the printing apparatus obtains a position, in the feeding direction, of either one of a left edge or a right edge of the upper or lower edge that is fed leading or trailing the other in the feeding direction.

Abstract: A printing apparatus comprises a carry roller for carrying a print sheet. The carry roller has virtual circumference segments that are obtained by virtually dividing a circumference of the carry roller into a plurality of segments in a direction in which the carry roller is rotated, and said printing apparatus is capable of printing a plurality of patterns for each of said virtual circumference segments, each of said patterns corresponding to a different correction amount, and setting a correction amount corresponding to one of the patterns to each said virtual circumference segment.