Patent application number | Description | Published |
20090115809 | LIQUID EJECTION CONTROL METHOD AND LIQUID EJECTION APPARATUS - 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. | 05-07-2009 |
20090219321 | LIQUID EJECTING DEVICE, COMPUTER SYSTEM, AND LIQUID EJECTING METHOD - 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. | 09-03-2009 |
20100013885 | LIQUID EJECTION METHOD AND LIQUID EJECTING APPARATUS - 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. | 01-21-2010 |
20100026750 | PRINTING APPARATUS AND PRINTING SYSTEM WITH A PLURALITY OF MOVABLE SENSORS FOR A PLURALITY OF FEATURES DETECTION - 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. | 02-04-2010 |
20100171785 | LIQUID EJECTION APPARATUS, LIQUID EJECTION SYSTEM, AND LIQUID EJECTION METHOD - 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. | 07-08-2010 |
20100188447 | LIQUID EJECTING DEVICE, COMPUTER SYSTEM, AND LIQUID EJECTION METHOD - 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. | 07-29-2010 |
20120081448 | Liquid Ejecting Apparatus And Printing System - A liquid ejecting apparatus includes a movable head with nozzles that eject a liquid; a transport unit that transports a medium in a transporting direction; and a sensor that detects an edge of the medium and that is movable with the head. Ejection of liquid from the nozzles is controlled based on the sensor detection result. The transport roller transports the medium in a slanted manner toward a surface of a platen, and after the medium's front edge contacts the platen, the medium bends on the platen with the front edge of the medium moving along the surface of the platen toward a paper discharge roller. Relative to the transporting direction, the sensor is positioned upstream of the most upstream nozzle and downstream of a position at which the front edge of the medium first comes into contact with the platen. | 04-05-2012 |
20120139983 | Liquid Ejecting Apparatus, Computer System, And Liquid Ejection Method - A liquid ejecting apparatus and method creates no blank space on a medium. Such 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, an operation of feeding the medium, 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 a start position or 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. | 06-07-2012 |
Patent application number | Description | Published |
20090058920 | PRINTING APPARATUS AND METHOD OF CONTROLLING THE SAME - A printing apparatus includes an ejection unit that ejects fluid from nozzles onto a target and a nozzle inspection unit that performs nozzle inspection to inspect whether the fluid is ejected. An automatic print setting unit sets a check pattern automatic print mode in which a check pattern for confirming whether the fluid is ejected from the nozzles. An automatic inspection setting unit, when a predetermined automatic inspection condition is established, sets an automatic nozzle inspection mode in which the nozzle inspection is performed. A cleaning unit performs nozzle cleaning to clean abnormal nozzles that are detected. When the automatic nozzle inspection mode is set, a control unit controls the nozzle inspection unit so as not to perform the nozzle inspection during a period from when one of printing based on the print data and printing of the check pattern is started until the other is finished. | 03-05-2009 |
20090066743 | EJECTION INSPECTING DEVICE, PRINTING DEVICE, AND EJECTION INSPECTING METHOD - An ejection inspecting device which inspects an ejection state of an ejection head, including nozzles ejecting fluid, includes fluid receiving areas corresponding to the ejection head so as to receive the fluid ejected from the nozzles. A potential difference generating unit generates predetermined potential differences between the ejection head and the fluid receiving areas. Electrical variation detecting units detect electrical variations of the fluid receiving areas. A control unit drives the ejection head to eject the fluid to the fluid receiving areas from the nozzles in a state in which the predetermined potential differences are generated between the ejection head and the fluid receiving areas by the potential difference generating unit. The ejection inspecting device also inspects the nozzles to determine whether the fluid is ejected from the nozzles on the basis of the detection results of the electrical variation detecting units in the fluid receiving areas. | 03-12-2009 |
20140098147 | LIQUID EJECTING APPARATUS AND LIQUID EJECTING METHOD - A liquid ejecting apparatus includes a reference drive signal generation section that generates a reference drive signal, a signal modulation section that modulates the reference drive signal to generate a modulation reference drive signal, a signal amplification section that amplifies the modulation reference drive signal using switching elements to generate a modulation drive signal, a signal conversion section that converts the modulation drive signal to a drive signal, and a head which includes a piezoelectric element that deforms in response to the drive signal, a pressure chamber that expands and contracts due to the deformation of the piezoelectric element and has a Helmholtz resonance frequency of a period Tc, and a nozzle opening portion that communicates with the pressure chamber. A period of an alternating current component contained in the modulation drive signal is a divisor of a section of one of the drive signal. | 04-10-2014 |
20140098148 | LIQUID EJECTING APPARATUS AND LIQUID EJECTING METHOD - A liquid ejecting apparatus includes a reference drive signal generation section that generates a reference drive signal, a signal modulation section that modulates the reference drive signal to generate a modulation reference drive signal, a signal amplification section that amplifies the modulation reference drive signal using switching elements to generate a modulation drive signal, a signal conversion section that converts the modulation drive signal to a drive signal, a piezoelectric element that deforms in response to the drive signal, a pressure chamber that expands or contracts due to the deformation of the piezoelectric element, and a nozzle opening portion that communicates with the pressure chamber. A period of alternating current components contained in the modulation drive signal are shorter than a duration of a maximum voltage or a minimum voltage, and is longer than a total time of turn-on delay times and turn-off delay times of the switching elements. | 04-10-2014 |
20140098149 | LIQUID EJECTING APPARATUS - A liquid ejecting apparatus includes a reference drive signal generation section that generates an analog reference drive signal, a signal modulation section that modulates the reference drive signal to generate a digital modulation reference drive signal, a signal amplification section that amplifies the modulation reference drive signal to generate a modulation drive signal, a signal conversion section that converts the modulation drive signal to an analog drive signal, and a liquid ejecting section that ejects a liquid in response to the drive signal. A sum of a resistance value of a reference drive signal transfer line and a resistance value of a drive signal transfer line is smaller than a sum of a resistance value of a modulation reference drive signal transfer line and a resistance value of a modulation drive signal transfer line. | 04-10-2014 |
20140098385 | PRINTING APPARATUS AND PRINTING METHOD - The printing apparatus includes a reference drive signal generation section that generates a reference drive signal, a signal modulation section that modulates the reference drive signal to generate a modulation reference drive signal, a signal amplification section that amplifies the modulation reference drive signal using switching elements to generate a modulation drive signal, a signal conversion section that converts the modulation drive signal to a drive signal, a piezoelectric element that deforms in response to the drive signal, a pressure chamber that expands or contracts due to the deformation of the piezoelectric element, a nozzle opening portion that communicates with the pressure chamber, and a frequency control section which limits a switching frequency to be less than a predetermined value in a case where a product of the printing resolution and the printing speed is equal to or larger than a threshold value. | 04-10-2014 |