摘要:
A base member for an ink jet head, the base member comprising a substrate, a heat generating resistor provided between electrodes which constitute a pair on the substrate an upper protection layer provided on an insulation layer which in turn is provided on the heat generating resistor, the upper protection layer having a contact surface contactable to ink, the improvement residing in that the upper protection layer is made of amorphous alloy having a following composition formula: Ta&agr;Fe&bgr;Ni&ggr;Cr&dgr; where 10 atomic %≦&agr;≦30 atomic %, &agr;+&bgr; &ggr; and, &agr;+&bgr;+&ggr;+&dgr;=100 atomic %, and, at least the contact surface of the upper protection layer contains an oxide of a constituent component.
摘要:
There is disclosed a solid semiconductor element which very efficiently detects information about a liquid and bidirectionally exchanges the information with the outside. The solid semiconductor element is disposed in a liquid container, and includes at least energy converting unit, information acquiring unit, and information communicating unit. The energy converting unit converts an electromotive force from the outside to a power, and operates the information acquiring unit and information communicating unit. The information acquiring unit acquires the information about the liquid in which the solid semiconductor element is disposed from the liquid, and the information communicating unit transmits the information acquired by the information acquiring unit to the outside.
摘要:
A base member for an ink jet head, the base member comprising a substrate, a heat generating resistor provided between electrodes which constitute a pair on the substrate an upper protection layer provided on an insulation layer which in turn is provided on the heat generating resistor, the upper protection layer having a contact surface contactable to ink, the improvement residing in that the upper protection layer is made of amorphous alloy having a following composition formula: Ta&agr;Fe&bgr;Ni&ggr;Cr&dgr; where 10 atomic %≦&agr;≦30 atomic %, &agr;+&bgr; &ggr; and, &agr;+&bgr;+&ggr;+&dgr;=100 atomic %, and at least the contact surface of the upper protection layer contains an oxide of a constituent component.
摘要:
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).
摘要:
An ink jet recording head includes a plurality of recording elements arranged in an array on a substrate, the recording elements having electric resistances with a variance not less than 4% from a resistance value of at least one of the recording elements, wherein the recording elements generate ink ejection energy to effect printing; a plurality of measuring elements, disposed adjacent at least each of the opposite ends of the array of the recording elements, for detesting characteristic values of the recording elements; and a storing section for storing an average, a median or a reference value corresponding thereto.
摘要:
A printhead with a comparatively simple construction, which contributes to reducing the cost of the entire system and development work, effectively utilizes essential constituent devices of a logic circuit of the printhead such as a shift register, while omitting control on the printing apparatus side, and individually performs stable print operation, while suppressing variation of energy inputted to heat generators due to voltage drop by parasitic resistance. A printing apparatus incorporates the printhead. The printhead has a counter which counts the number of simultaneously-driven heat generators, which always changes in accordance with image data, based on externally-inputted image data and block selection signal, and a modulator which modulates the pulse width of a drive signal applied to the simultaneously-driven heat generators based on a value obtained from counting by the counter.
摘要:
The substrate for use of an ink jet recording head is provided with a plurality of heat generating resistive members and the electrode wiring pattern electrically connected with the heat generating resistive members formed on the substrate, and a protection film formed on the heat generating resistive members and the electrode wiring pattern to protect them from ink. For this substrate, each of the heat generating resistive members comprises a first heat generating resistive member arranged on the lower layer of the electrode wiring pattern connected with the heat generating resistive member, and a second heat generating resistive member arranged between the protection film and the electrode wiring pattern. With the structure thus arranged, it becomes possible to make the protection film on the upper layer thinner, and attempt the power saving. Also, it becomes unnecessary to make the effective bubbling area smaller for the provision of a highly reliable ink jet recording head which can operate in high density.
摘要:
The invention intends to maintain a constant ink discharge amount among the recording heads, even in case a total pulse width of pulse voltages applied to heat generating resistors. For this purpose, a rank table is prepared in such a manner, even in a situation where a total pulse width of the pulses applied to the heat generating resistor is 3 μs or less whereby the ink discharge amount decreases with a decrease in the total pulse width, that a maximum reached temperature on the surface of the heat generating resistors at the application of a preheat pulse becomes higher with a decrease in the resistance of a rank resistor, and a pulse width P1 on the rank table is made longer thereby compensating a decrease in the ink discharge amount with a decrease in the total pulse width and maintaining a constant ink discharge amount.
摘要:
A stable operation is realized without any malfunction of a driver even under a voltage condition that a supplied voltage is 3.3 V or lower. For this purpose, in an ink-jet printhead having an ink orifice for discharging ink, a plurality of heat generation elements for generating heat energy used to discharge ink, and an ink channel which incorporates the heat generation elements and communicates with the ink orifice, a driver for driving the heat generation elements, and a logic circuit for controlling the driver are formed on a single board. The gate oxide film thickness of an enhancement NMOS transistor which forms the driver is larger than that of an enhancement NMOS transistor which forms the logic circuit.
摘要:
The present invention provides a printer head having a plurality of print elements for effecting recording on a recording medium on the basis of printer information inputted from outside, comprising an interface circuit for converting input of the printer information corresponding to communication interface standard for high speed data transferring into data processable in the print head and for outputting the converted data, and in which the recording on the recording medium is effected by the print elements in accordance with the printer information outputted from the interface circuit. A printer apparatus having such a printer head is also provided.