Patent application number | Description | Published |
20150022593 | LIQUID EJECTING APPARATUS AND METHOD OF CONTROLLING LIQUID EJECTING APPARATUS - A pressure chamber array includes one or more dummy pressure chambers in which ejection of ink is not performed, the dummy pressure chamber includes a piezoelectric element, and a drive potential generator continues to apply a drive potential to the piezoelectric element corresponding to the dummy pressure chamber, while the ejection of the ink from a nozzle of at least a pressure chamber adjacent to the dummy pressure chamber is performed. | 01-22-2015 |
20150028125 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head in which a flow path substrate having a communication hole communicating with a nozzle and a pressure chamber substrate having a space that is a pressure chamber are at least laminated includes: an actuator having an active section that is interposed between electrodes and applies pressure to the pressure chamber. The pressure chamber substrate has a first space positioned in a region corresponding to the active section and a second space positioned nearer to the nozzle than the first space and communicating with the first space among the spaces. The communication hole does not overlap with the first space and overlaps with at least a part of the second space in a lamination direction. | 01-29-2015 |
20150035883 | LIQUID EJECTING APPARATUS, AND CONTROL METHOD FOR LIQUID EJECTING APPARATUS - In a recording suspension period when a recording head is accelerated or decelerated in a non-recording region on a recording medium, or stops moving in the course of performing a printing process (printing job), a second driving signal is generated from a driving signal generation portion. Second vibration driving pulses of the second driving signal are applied to all piezoelectric elements, so that a vibration operation is performed without ejecting the liquid. Since a second reference potential of the second driving signal is set to be lower than a first reference potential of a first driving signal generated in a recording period as much as possible, a general potential (driving voltage) of the second driving signal is reduced, and reduce power consumption in the recording suspension period is reduced. As a result, it is possible to contribute to the power consumption saving of a printer. | 02-05-2015 |
20150035885 | LIQUID EJECTING APPARATUS - A drive signal includes a first drive pulse that causes liquid droplets to be ejected from nozzles and a second drive pulse that causes liquid droplets of a different size to those of the first drive pulse to be ejected from the nozzles. Each pulse includes at least an expansion element that causes a pressure chamber to expand by changing from a standard potential, which is a standard for changes in potential, to an expansion potential, a contraction element that causes the expanded pressure chamber to contract by changing from a potential that is on an expansion potential side of the standard potential to a contraction potential that exceeds the standard potential thereby ejecting the liquid. Initiation potentials of the contraction elements of the first and second drive pulses are made to be uniform at the same potential. | 02-05-2015 |
20150042710 | LIQUID EJECTING APPARATUS - A drive signal includes a first drive pulse that causes liquid droplets to be ejected from nozzles and a second drive pulse that causes liquid droplets of a different size from those of the first drive pulse to be ejected from the nozzles. The drive pulses have expansion elements that expand a pressure chamber, contraction elements that contract a pressure chamber, and vibration control elements. An initiation potential of the contraction element of the first drive pulse and an initiation potential of the contraction element of the second drive pulse are the same. The differential voltage between the standard potential and the contraction potential is set to between 40% 50% or less of the potential between the initiation potential of the contraction element and the contraction potential. | 02-12-2015 |
20150042723 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - By appropriately defining a flow path capacity from an opening of an ink supply path to a nozzle in a pressure chamber, a progress of thickening ink toward the pressure chamber is suppressed. In other words, by setting the individual flow path capacity to be large, specifically, to 4400 pl or higher, desirably 6210 pl or higher, it is possible to suppress the progress of the thickening of the ink even in a small-sized liquid ejecting head of which the shortest formation pitch between each of the nozzles is 1/300 inches. More specifically, a nozzle communication opening is provided between the pressure chamber and the nozzle, and a total capacity of the nozzle communication opening and the pressure chamber is configured to be 4400 pl or higher, desirably 6210 pl or higher. | 02-12-2015 |
20150145912 | LIQUID EJECTING APPARATUS - A printer includes a recording head, a carriage moving mechanism which moves the recording head in a scan direction, and a driving signal generating circuit which generates a driving signal including an ejection pulse for ejecting ink from the nozzle, and while moving the recording head using the carriage moving mechanism, forms an image on the recording medium based on ejection control data, and includes a control unit that in a case where an amount of the pixel data corresponding to a predetermined area on the recording medium is relatively large, performs control in such a manner that the moving speed of the recording head at a constant speed section at which the recording head moves at a constant speed is slower than that in a case where an amount of data is relatively small. | 05-28-2015 |
20150217565 | LIQUID EJECTING APPARATUS, AND METHOD FOR CONTROLLING LIQUID EJECTING APPARATUS - A first flushing pulse is a drive waveform for ejecting ink by displacing a meniscus onto a pressure chamber side and an ejecting side while interposing a standby position from the standby position, a second flushing pulse is a drive waveform for ejecting the ink by pushing out the meniscus onto the ejecting side, without substantially displacing the meniscus onto the pressure chamber side from the standby position, and in a flushing processing, after a first flushing processing is performed by ejecting the ink one or more times in accordance with the first flushing pulse, a second flushing processing is performed by ejecting the ink a plurality of times in accordance with the second flushing pulse. | 08-06-2015 |