Patent application number | Description | Published |
20080297561 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head includes a plurality of nozzle groups each including a plurality of nozzle openings; and a plurality of pressure generating chambers that cause liquid to be ejected from the nozzle openings. A plurality of recessed portions are formed at a nozzle forming member, the recessed portions each having a thickness smaller than a thickness of the nozzle forming member, the nozzle openings being formed at the recessed portions. A set of at least one of the plurality of nozzle openings included in each single nozzle group defines a nozzle set, the nozzle set being arranged to correspond to each of the pressure generating chambers. The nozzle groups each have a plurality of nozzle sets in an array, the nozzle sets of one of the nozzle groups being relatively shifted from the nozzle sets of another one of the nozzle groups in a nozzle-set-array direction. | 12-04-2008 |
20090002448 | FLUID DISCHARGING APPARATUS AND METHOD OF CONTROLLING THE FLUID DISCHARGING APPARATUS - A fluid discharging apparatus including a head, a medium support portion, a contact member, and an actuator portion. The head includes a plurality of nozzles through which a fluid is discharged onto a target medium. The medium support portion supports the medium. The contact member is provided within the medium support portion. The actuator portion moves at least one of the head and the medium support portion so that the plurality of nozzles are located close to or far from the contact member. During a standby state when fluid is not discharged onto the medium, the contact member is brought into contact with the head in order to seal the plurality of nozzles, and in a discharging state, the head is located away from the contact member in order to provide a space through which the medium is allowed to pass between the plurality of nozzles and the contact member. | 01-01-2009 |
20090009553 | FLUID EJECTING APPARATUS - A fluid ejecting apparatus that ejects a fluid includes a storage portion that stores a fluid, a head, and a head capping device. The head discharges fluid supplied from the storage portion from a plurality of nozzles and includes a fluid discharging passage through which other fluid is discharged from the storage portion. The head capping device contacts the head and receives the fluid discharged from the plurality of nozzles and the fluid discharged through the fluid discharging passage. The head and the head capping device respectively include a head side flow passage and a head capping device side flow passage, which cooperatively form a circulation flow passage, through which the fluid that flows from the storage portion through the nozzles and the fluid discharged through the fluid discharging passage are returned back to the storage portion, in a state where the head capping device contacts the head. | 01-08-2009 |
20090015643 | FLUID EJECTING APPARATUS - A fluid ejecting apparatus that ejects a fluid includes a storage portion that stores a fluid, a head, and a head capping device. The head discharges fluid supplied from the storage portion from a plurality of nozzles and includes a fluid discharging passage through which other fluid is discharged from the storage portion. The head capping device contacts the head and receives the fluid discharged from the plurality of nozzles and the fluid discharged through the fluid discharging passage. The head and the head capping device respectively include a head side flow passage and a head capping device side flow passage, which cooperatively form a circulation flow passage, through which the fluid that flows from the storage portion through the nozzles and the fluid discharged through the fluid discharging passage are returned back to the storage portion, in a state where the head capping device contacts the head. | 01-15-2009 |
20090079773 | FLUID EJECTING APPARATUS - A fluid ejecting apparatus including a pressure chamber filled with fluid, a pressure generating element that is provided on a surface of the pressure chamber that changes the volume of the pressure chamber, a nozzle that is in fluid communication with the pressure chamber that ejects the fluid, and a control unit that generates a maintenance drive pulse for discharging unnecessary bubbles together with fluid from the pressure chamber, wherein the maintenance drive pulse includes a first pulse portion that causes the pressure chamber to expand into an expanded state, a second pulse portion that maintains the expanded state for a predetermined period of time, and a third pulse portion that causes the pressure chamber to contract, wherein the pulse width of the first pulse portion is set to be equal to or smaller than half the Helmholtz resonance period of the fluid in the pressure chamber. | 03-26-2009 |
20090079785 | FLUID EJECTING APPARATUS AND EJECTING HEAD MAINTENANCE METHOD - A method for maintaining a fluid ejecting apparatus including an ejecting head that has an ejecting surface in which a plurality of ejecting ports that eject fluid are formed, and a maintenance portion that performs maintenance processing to recover the ejection of fluid from the ejecting ports and that has a cap member and a wiping member. The method includes performing capping processing to put the cap member on the ejecting surface and to suck, and then wiping processing to wipe the ejecting surface with the wiping member, and performing the capping processing again and then waiting a predetermined time without performing the wiping processing. | 03-26-2009 |
20090079788 | FLUSHING METHOD FOR FLUID EJECTING APPARATUS - A flushing method for a fluid ejecting apparatus that includes a pressure chamber filled with fluid, a pressure generating element on a surface of the pressure chamber that deforms the surface to change the pressure in the pressure chamber, and a nozzle in fluid communication with the pressure chamber that ejects the fluid, the method including repeatedly performing first flushing process a first period; and repeatedly performing a second flushing process with a second period. The flushing processes include causing the pressure chamber to expand into an expanded state, maintaining the expanded state, and contracting the pressure chamber from the expanded state, causing the fluid to be ejected from the nozzle. The amount of fluid ejected from the nozzle in the second flushing process is larger than the amount ejected in the first flushing process. | 03-26-2009 |
20090167794 | LIQUID EJECTION APPARATUS, LIQUID STORAGE AND CONTROL METHOD OF A LIQUID EJECTION APPARATUS - To respond to variation of characteristics of light-curable liquid. In order to do that, ink information that is recorded in a contact ROM of an ink cartridge is read out, and adjustment is performed based on the read-out ink information. | 07-02-2009 |
20090295853 | FLUID EJECTING APPARATUS - A fluid ejecting apparatus that ejects fluid includes: a pressure chamber that is filled with the fluid; a pressure generating element that deforms a wall face of the pressure chamber to change a volume of the pressure chamber; a nozzle that is in fluid communication with the pressure chamber and that is used for ejecting the fluid; and a control unit that generates a drive pulse for controlling the pressure generating element. The control unit is able to generate a maintenance drive pulse for ejecting a bubble together with the fluid from the pressure chamber. The maintenance drive pulse includes a first pulse portion that drives the pressure generating element to cause the pressure chamber to expand into an expanded state and a second pulse portion that causes the pressure chamber to contract from the expanded state. The width of the second pulse portion is equal to or smaller than half the Helmholtz resonance period of the fluid with which the pressure chamber is filled. | 12-03-2009 |
20090295854 | FLUID EJECTING APPARATUS - A fluid ejecting apparatus that ejects fluid includes a control unit that generates a drive pulse and a temperature detection unit that detects at least one of an environment temperature and a temperature of a fluid ejecting head. The control unit is able to generate a maintenance drive pulse for ejecting a bubble together with the fluid from a pressure chamber. The maintenance drive pulse includes a first pulse portion that cause the pressure chamber to expand into an expanded state, a second pulse portion that causes the pressure chamber to contract from the expanded state, and an intermediate pulse portion placed between the first pulse portion and the second pulse portion for holding the expanded state of the pressure chamber. The control unit adjusts the width of the intermediate pulse portion on the basis of the temperature detected by the temperature detection unit. | 12-03-2009 |
20100079521 | LIQUID EJECTING APPARATUS - A liquid ejecting apparatus includes: a head having a nozzle; a pressure-changing unit for changing pressure of liquid in the nozzle in such a manner that the liquid is ejected from the nozzle; a level-data setting unit for setting a selected level data from a plurality of level data, based on an ejecting data; a driving-signal generator for generating a first driving signal and a second driving signal; and a driving-pulse generator for generating a driving pulse based on the selected level data and the first driving signal and the second driving signal. The first driving signal and the second driving signal are periodical signals having a same period. The first driving signal includes a first large-drop pulse-wave and a third large-drop pulse-wave. The second driving signal includes a second large-drop pulse-wave. The first large-drop pulse-wave, the second large-drop pulse-wave and the third large-drop pulse-wave have a same waveform, and appear in that order at regular intervals. | 04-01-2010 |
20140290725 | PHOTOELECTRIC CONVERSION ELEMENT AND PHOTOVOLTAIC CELL - A photoelectric conversion element includes a ferroelectric layer; a first electrode provided on a surface or a surface layer portion of the ferroelectric layer; a second electrode provided on a surface or a surface layer portion of the ferroelectric layer, and allowing a voltage to be applied between the first electrode and the second electrode, and a pair of lead-out electrodes that extract electric power from the ferroelectric layer, in which the first electrode and the second electrode are arranged alternately in a predetermined direction. | 10-02-2014 |
20140290733 | PHOTOELECTRIC CONVERSION ELEMENT AND PHOTOVOLTAIC CELL - A photoelectric conversion element includes a ferroelectric layer as a photoelectric conversion layer. The ferroelectric layer is formed from a polycrystalline ferroelectric material and includes a plurality of domains. Adjacent two of the plurality of domains have different polarized states. | 10-02-2014 |
20140290734 | PHOTOELECTRIC CONVERSION ELEMENT AND PHOTOVOLTAIC CELL - A photoelectric conversion element includes a ferroelectric layer; a first electrode and a second electrode provided on a surface or a surface layer portion of the ferroelectric layer; a common electrode provided on a surface or a surface layer portion of an opposite side to a side of the ferroelectric layer on which the first electrode and the second electrode are provided; and a pair of lead-out electrodes extracting electric power from the ferroelectric layer, in which the first electrode and the second electrode are arranged alternately in a predetermined direction. | 10-02-2014 |