摘要:
The present invention provides a print head that ejects ink supplied through an ink supply port so as to prevent the size of satellites from being reduced while inhibiting an increase in resistance to an ink flow. In the print head, ink supply ports are arranged on both sides of a plurality of channels. A predetermined number of ink supply ports are arranged at least one side of the ink channel all over the range of the arrangement of the channels. One side of each of the plurality of channels is connected via the common liquid chamber to the liquid supply port located so as to extend in a direction in which the channels are arranged.
摘要:
A detector circuit for detecting a malfunction of a circuit due to a low third power supply voltage that has the same amplitude and potential as an input signal is provided. Based on an output signal of the detector circuit, whether an output of a second power supply voltage generation circuit for activating a heater driving circuit is allowed or not is determined. When the third power supply voltage is low and the heater driving circuit operates improperly, no power supply voltage is supplied from the second power supply voltage generation circuit. Since no power supply voltage is supplied to the heater driving circuit, the heater driving circuit does not drive a corresponding heater.
摘要:
A liquid jet recording head includes a substrate including a plurality of discharge energy generating elements, and a plurality of ink supply ports positioned along an array direction of the plurality of discharge energy generating elements and separated from each other by beams, a plurality of ribs supported by the beams, and an orifice plate supported by the plurality of ribs, wherein the orifice plate includes discharge ports for discharging liquid droplets which enter from the plurality of ink supply ports and is provided with discharge energy by the plurality of discharge energy generating elements.
摘要:
A liquid discharge head includes: a discharge port from which a liquid is discharged; a channel that communicates with the discharge port; and an energy generating element that is provided in the channel and generates energy used to discharge the liquid from the discharge port, wherein the channel includes a first inlet path supplying the liquid to the energy generating element; a second inlet path supplying the liquid to the energy generating element from a direction opposite to a direction in which the first inlet path supplies the liquid; and a outlet path allowing the liquid supplied to the energy generating element to run out.
摘要:
A buffer circuit for shaping a waveform of a logic signal is arranged where a line for a logic circuit included in a recording-head substrate is divided into substantially equal portions, the line having an unignorable parasitic component due to its increased length. Therefore, the recording-head substrate, a recording head using the recording-head substrate, and a recording apparatus including the recording head are capable of minimizing the adverse effects of parasitic resistance and parasitic capacitance in lines even when the length of a heater array is increased.
摘要:
An ink-jet recording head substrate which is mounted with electrothermal transducers producing thermal energy used for discharging ink and which drives the electrothermal transducers, comprising: a production circuit operating on a first voltage and producing a selection signal indicating driving or non-driving of the electrothermal transducer; a conversion circuit for converting the produced selection signal into a selection signal of a second voltage higher than the first voltage; and a driving circuit operating on the second voltage and driving the electrothermal transducer in accordance with the selection signal of the second voltage. The ink-jet recording head substrate includes a circuit which operates on the second voltage and which outputs the detection signal if the first voltage is less than a predetermined level, and sets a selection signal supplied to a circuit which operates on the second voltage and which performs the above driving if the detection signal is outputted, in a state indicating non-driving.
摘要:
A detector circuit for detecting a malfunction of a circuit due to a low third power supply voltage that has the same amplitude and potential as an input signal is provided. Based on an output signal of the detector circuit, whether an output of a second power supply voltage generation circuit for activating a heater driving circuit is allowed or not is determined. When the third power supply voltage is low and the heater driving circuit operates improperly, no power supply voltage is supplied from the second power supply voltage generation circuit. Since no power supply voltage is supplied to the heater driving circuit, the heater driving circuit does not drive a corresponding heater.
摘要:
A buffer circuit for shaping a waveform of a logic signal is arranged where a line for a logic circuit included in a recording-head substrate is divided into substantially equal portions, the line having an unignorable parasitic component due to its increased length. Therefore, the recording-head substrate, a recording head using the recording-head substrate, and a recording apparatus including the recording head are capable of minimizing the adverse effects of parasitic resistance and parasitic capacitance in lines even when the length of a heater array is increased.
摘要:
An ink jet print head is configured to reduce the inclination of an ink ejection direction to make improper print conditions such as stripes and density unevenness unnoticeable. An individual wire is extended to lie under a common wire. Thus, wires under ink channels arranged on the respective opposite sides of a pressure chamber are symmetric. Consequently, an equivalent step structure is provided at the bottoms of the ink channels arranged on the respective opposite sides of the pressure chamber.
摘要:
A power supply-heater wiring and a heater-driving circuit wiring for a heater located on the right side of a supply port can be laid out utilizing a beam portion configured to separate supply ports from each other. Furthermore, a plurality of supply ports are provided to supply ink to channels and pressure chambers and separated from one another by beam portions. Thus, an ejection structure such as an ejection opening can be located on both sides of each of the supply ports. Even if the ejection structures are relatively densely arranged, the heaters and the like can have necessary and sufficient sizes and locations without being restricted by the arrangement. A wiring connecting the heater to the power supply wiring or driving circuit is also laid out on the beam portion serving as a partition wall for the supply ports.