Abstract: To supply electromotive force to a solid semiconductor element in an ink tank in a non-contact and stable manner. An electromagnetic apparatus (a standstill electromotive force supply unit) is placed at a home position HP. When a carriage is at a standstill at this home position HP, if the electromagnetic apparatus is AC-driven, magnetic properties of both ends (magnetic poles) continue to change mutually and penetrate a solid semiconductor element in the ink tank on the carriage so that a constantly changing magnetic flux is generated. Electromotive force is generated by electromagnetic induction on a coil of the solid semiconductor element. In addition, if the carriage reciprocates during printing operation, the coil L of the solid semiconductor element crosses inside the magnetic flux due to a plurality of permanent magnets (a movement time electromotive force supply unit) arranged on a carrier path (range of movement), and so the electromotive force is generated on the coil by electromagnetic induction.

Abstract: A method for manufacturing ink jet recording heads includes the steps of forming a film of a first inorganic material in the form of ink flow path pattern using a soluble first inorganic material on the substrate having ink-discharge, pressure-generating elements formed thereon, forming a film of a second inorganic material becoming ink flow walls on the film of the first inorganic material using the second inorganic material, forming ink-discharge openings on the film of the second inorganic material above the ink-discharge, pressure-generating elements, and eluting the film of the first inorganic material.

Abstract: The present inventions allow the detection of ink in the printing head by significantly simplified their configurations and on which various printing systems can be widely applied. There are a heater for supplying an energy to ejecting ink, a driver for driving heater, and a detection electrode capable of detecting a voltage variation between the heater and the driver to be occurred depending on the driving of the heater. Furthermore, an insulating film that covers the surface of the detection electrode prevents a chemical or physical change from the detection electrode. Furthermore, a reference element group or a reference unit that produces a signal as a reference of the detection signal avoids the influence of noise. Furthermore, an energy-generating element and another signal source improve the accuracy of ink-detection. A drive pulse which is insufficient to ejecting ink may be supplied to the heater to improve the accuracy of ink-detection.

Abstract: Upon executing printing by latching an input digital image signal temporarily stored in a shift register (502) by a latch circuit (501), and energizing and driving a heater (401) using a power transistor (410) using an nMOSFET on the basis of the latched image signal, a voltage converter (111) boosts a voltage representing the ON state of the latched digital signal, and applies the boosted voltage to the power transistor (410).

Abstract: A substrate, for use in a liquid discharge head for discharging liquid by applying thermal energy thereto, is provided with a heat generating member for applying the thermal energy to the liquid and a movable member so positioned as to be opposed to the heat generating member, to be fixed at the upstream side in the flowing direction of the liquid and to have a free end at the downstream end. Two wiring layers for applying a voltage to the heat generating member are provided in a superposed manner with an interlayer insulation layer therebetween and are mutually connected electrically via a through-hole. The through-hole is provided in a position different from the boundary between a fixing portion and a movable portion of the movable member.

Abstract: A printhead compatible with various printers, e.g. a printer having low print density or a printer having high print density, enables printing in the best capability of the printer. The printhead comprises: a determination circuit 24 which determines a type of a printer incorporating the printhead, and switches SW1 and SW2 which select a method of driving the printhead according to in the printer, on the basis of the determination result by the determination circuit 24. When the printhead is installed in the printer capable of printing at 360 dpi, four print dots printed at 720 dpi substantially express one dot printed at 360 dpi. Meanwhile, when the printhead is installed in the printer capable of printing at 720 dpi, one print dot expresses one dot printed at 720 dpi.

Abstract: Provided are a recording head, recording apparatus, recording method, and recording head which are cartridge using the recording head, capable of correcting the offset of recording dot position in the direction of movement of the recording head, with a simple structure. A plurality of columns of image data corresponding to the plurality of recording devices relating to recording is held and image data corresponding to the column to be recorded is selected from this held image data and recording is thus performed, so that the driving column and recording column can be changed for each nozzle. Consequently, positional offset of dots can be adjusted for each nozzle.

Abstract: A printhead, constructed with a plurality of common-type element substrates which sandwich a connecting board, which performs printing by utilizing a common-type control signal. The element substrate integrates: a plurality of heaters 101 which are arrayed in one line, power transistors 102, a shift register 104, a latch circuit 117, an AND circuit 119, terminals 114 to 116 for inputting block-selection signals, a terminal 120 for inputting an inverse instruction signal which instructs to invert the block selection signal, a block inverter 121 for inverting the block-selection signal in accordance with the inverse instruction signal, and a 3 to 8 decoder 118 for selecting one of a plurality of blocks. By utilizing a printhead where at least two of the element substrate are arranged opposite to each other, and where plural arrays of printing elements are formed, printing is performed by dividing a plurality of printing elements into a plurality of blocks and time-divisionally driving each block.

Abstract: A substrate is formed for use of an ink jet recording head provided with a plurality in heat generating members for generating thermal energy to be utilized for discharging ink, an interlayer film arranged for the lower layer of each of said heat generating members, and a protection layer for protecting said heat generating member. Each of the heat generating members of the substrate is structured by metal and insulator, and at the same time, the rate of metal content in the vicinity of the interfaces of the heat generating member becomes smaller than that in the center of the heat generating member in the film thickness direction thereof. With the structure of such member thus arranged, it is made possible to prevent or suppress interlayer peelings and cracks from taking place in each of the heat generating resistive layers where temperature changes are made intensely due to thermal cycle.