摘要:
A piezoelectric layer is provided on a vibration plate which covers a plurality of pressure chambers extending in a predetermined direction. The piezoelectric layer has a first area corresponding to a central portion in a width direction of each of the pressure chambers and a second area corresponding to both sides in a longitudinal direction of an inner peripheral portion of each of the pressure chambers. A head for a liquid-droplet jetting apparatus which has the piezoelectric layer is prepared, and when the head is driven, a first driving step for applying a drive voltage to the second area, and the first area corresponding to a pressure chamber which does not jet a liquid droplet is carried out. Thereafter, a second driving step for applying a drive voltage to the first area corresponding to a pressure chamber which discharges the liquid droplet is carried out.
摘要:
An ink cartridge has an ink tank for reserving ink and a joint connected to the ink tank, the joint including an outer frame having an ink channel, and a sealing member made of an elastic material and received in the outer frame, the sealing member having a cylindrical portion and a valve portion. When an ink supply pipe having an ink inlet is inserted into the cylindrical portion, the cylindrical portion abuts against an outer circumference of the ink supply pipe on an ink flow downstream side of the ink supply pipe with respect to the ink inlet. The valve portion leaves the outer frame so as to open the ink channel when the ink supply pipe is inserted into the cylindrical portion, and when the ink supply pipe is not inserted into the cylindrical portion, the valve portion abuts against the outer frame to close the ink channel.
摘要:
An ink cartridge which is to be mounted on an ink-jet printer and from which ink is supplied to at least one nozzle of an ink-jet printing head of the ink-jet printer, the ink cartridge including: an ink tank in which ink is stored; an ink outlet hole which is formed in a wall of the ink cartridge that defines the ink tank and through which the ink flows out of the ink tank; and an air inlet hole which is formed in the wall of the ink cartridge that defines the ink tank and through which air flows into the ink tank. The air inlet hole is formed within an area of the wall in which the air inlet hole contacts the ink stored in the ink tank.
摘要:
A recording apparatus comprising: a printing head which has a plurality of recording elements and performs recording on the recording medium; a head holder which holds the printing head; a flexible wiring board comprising a flexible insulating band and a plurality of conductive wires and a driver element for actuating the printing head, which are provided on the flexible insulating band; and a heatsink for releasing heat generated by the driver element, wherein the heatsink is disposed between the flexible wiring board and the head holder.
摘要:
An ink-jet head includes a head main body including a channel unit in which a pressure chamber is formed, and a piezoelectric actuator having a piezoelectric deformation portion facing the pressure chamber, and an FPC which has a substrate and a plurality of wires, and which is arrange on an upper side of the piezoelectric actuator. A plurality of projections bent to form a projection toward the head main body is formed in the FPC. A front end of the projections is in contact with an area not facing the pressure chamber, on a surface of the piezoelectric actuator. Accordingly, it is possible to suppress hindering of a deformation of the piezoelectric deformation portion accompanied by a liquid discharge, due to a contact with a flexible flat cable.
摘要:
A head, for an ink-jet printer, includes a channel unit having a plurality of elongated pressure chambers arranged in a plurality of pressure-chamber rows; an actuator unit having individual surface electrodes corresponding to the pressure chambers respectively, and land portions each of which is conducted to one of the individual surface electrodes; and a flexible cable having connection terminals and signal lines. The land portions are electrically connected to the connection terminals. In each of the pressure-chamber rows, the land portions are arranged such that a certain land portion of the land portions is shifted, in the longitudinal direction of the pressure chamber, from another land portion adjacent to the certain land portion. Accordingly, it is possible to easily connect the flexible cable and the actuator unit easily even when the pressure chambers are arranged highly densely.
摘要:
A measurement electrode for capacitance measurement is disposed so as to be opposed to a common electrode with a second and a third piezoelectric plates in between and to be opposed to all ink pressurizing chambers with a first piezoelectric plate in between. The capacitance of the piezoelectric plate disposed between the common electrode and the measurement electrode is measured with a larger area, and from the measured capacitance, the temperature of the piezoelectric plate is calculated based on the capacitance-temperature characteristic of the piezoelectric plate. In order to generate a pressure suitable for the ink viscosity that changes according to the temperature, the change in the overall temperature of the printer head that changes according to the status of use of the printer is accurately measured.
摘要:
An ink cartridge having an ink storing portion which stores an ink to be supplied to a recording head, and which includes a flexible sheet and an outlet portion through which the ink is supplied to the recording head. A liquid chamber accommodates a liquid which contacts under a level thereof, the flexible sheet of the ink storing portion. A gas supplying portion supplies, as the ink is supplied from the ink storing portion to the recording head and accordingly a volume of the ink storing portion is decreased, a gas to the liquid chamber, so that the gas is accumulated above the liquid accommodated by the liquid chamber. A window is provided to detect an interface between the liquid accommodated by the liquid chamber and the gas accumulated above the liquid.
摘要:
There is disclosed an inkjet printer including: a printhead having a front surface in which is formed at least one nozzle row consisting of a plurality of nozzles from each of which a droplet of ink is ejected; a maintenance unit including a purge cap which receives ink from the nozzles during a purging operation, the purge cap having a contact surface to be brought into contact with the front surface of the printhead, and at least one main channel extending alongside the nozzle row; and a plurality of dents formed on at least one of the contact surface of the purge cap and the front surface of the printhead so as to form, at least when the contact surface is in contact with the front surface, a plurality of branches a part of each of which is in communication with at least one of the nozzles, and another part of each of which is in communication with the main channel.
摘要:
A flexible printed board production method which ensures higher adhesion of copper, excellent workability, easier continuous production and lower costs. The flexible printed board production method comprises the steps of: treating a surface of a polyimide resin film with plasma or short wavelength ultraviolet radiation; activating the treated surface with the use of an alkali metal hydroxide; electrolessly plating the surface of the polyimide resin film with nickel; and electroplating the electrolessly plated surface of the polyimide resin film with copper, whereby a copper layer is formed on the surface of the polyimide resin film.