摘要:
The present invention is directed to resolve the noise problem with the ink in an ink jet head without changing the substrate manufacturing process for the ink jet head, that is, increasing the cost on the manufacture, and without needs of disposing a noise countermeasure component on the side of the printer main device, or making the design change for the countermeasure. The present invention is characterized in that to prevent malfunction from arising by the noise, a hysteresis circuit l0l to provide different input data threshold values upon rising and falling is provided on an input portion of the signal for a drive control logic system such as a drive input signal for a shift register 404 and a latch circuit 403 on the same substrate as that of the heating elements 40l, the driver 402 and the drive control logic circuit, utilizing a diffusion layer constituting a driver 402.
摘要:
An ink jet recording head (50) detachably mountable to a main assembly of a recording apparatus includes ejection energy generating elements for generating energy for ejecting ink; wiring for supplying electric signals to the ejection energy generating elements; electric contacts (23), connected with the wiring, for receiving the electric signals; and an electric discharge path (35), provided at least a part of a periphery of the electric contacts, for releasing static electricity.
摘要:
A printing head has a plurality of heater boards, each of which includes a shift register to which printing data and selection data for selecting preheating pulse signals are applied as inputs, a latch circuit for latching the printing data, a selection-data latch circuit for latching the selection data, a selection circuit for selecting any one of a plurality of preheating pulse signals inputted in accordance with the latched selection data, and a plurality of heating resistors driven by the printing data or preheating pulse signals. Correction data, obtained by a head correcting apparatus, for performing printing at an average density by correcting the characteristics of each heater board is stored in a memory of the printing head. A printing apparatus decides the selection data in accordance with the correction data and sets the selection data in the selection-data latch circuit.
摘要:
A liquid discharge head comprises first and second substrates which are to be mutually adjoined to form plural liquid paths respectively communicating with plural discharge apertures. The first substrate (1,31,401) is provided with energy conversion elements (32,402), for converting electrical energy into energy for discharging liquid in the liquid paths, respectively corresponding to the liquid paths. The second substrate (3,33,403) is provided with detection elements (11,200,413), for detecting a state of the liquid in said liquid paths, respectively corresponding to the liquid paths, and amplification means for respectively amplifying outputs of said detection elements.
摘要:
A method for manufacturing ink jet recording heads comprises the steps of forming a film of a first inorganic material in the form of ink flow path pattern using the 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. With the method thus arranged, it becomes passible to set the ink discharge pressure generating elements and the ink discharge openings (ports) of each head in extremely high precision in a shorter distance with a good reproducibility to record images in higher quality without any deformation of the head due to the applied heat, while providing a good resistance to ink and erosion, as well as a higher dimensional precision and reliability that may be affected otherwise by swelling or the like.
摘要:
There is provided a liquid discharge head comprising a substrate (1), a ceiling plate (3) connected to the substrate, a liquid flow path (7) formed between the substrate and the ceiling plate, and a cantilever-like movable member (206) having a fixed end fixed to the substrate and a free end extending into the liquid flow path, wherein the movable member is formed of a lower protective layer, a heat generating resistive layer, a lower electrode layer, an insulating layer, an upper electrode layer, and an upper protective layer stacked from the side of the substrate in the mentioned order, and wherein application of a voltage to a heat generating portion of the heat generating resistive layer causes bubbling of a liquid in the liquid flow path between the movable member and the substrate to discharge the liquid.
摘要:
The present invention is directed to resolve the noise problem with the ink in an ink jet head without changing the substrate manufacturing process for the ink jet head, that is, increasing the cost on the manufacture, and without needs of disposing a noise countermeasure component on the side of the printer main device, or making the design change for the countermeasure. The present invention is characterized in that to prevent malfunction from arising by the noise, a hysteresis circuit l0l to provide different input data threshold values upon rising and falling is provided on an input portion of the signal for a drive control logic system such as a drive input signal for a shift register 404 and a latch circuit 403 on the same substrate as that of the heating elements 40l, the driver 402 and the drive control logic circuit, utilizing a diffusion layer constituting a driver 402.