摘要:
When protective portions are independently provided for each energy generation element, a leakage current inspection between the protective portions and the energy generation elements cannot be performed at once. Therefore, there is a concern that the inspection in manufacturing a substrate for liquid ejection head requires time. Therefore, the substrate for liquid ejection head is manufactured by performing a leakage current inspection between a connecting portion that is electrically connected to plurality of protective portions and a terminal to which the plurality of energy generation elements are connected, and thereafter removing the connecting portion.
摘要:
An inkjet printhead substrate includes: a pair of individual conductive layers configured to supply electrical power to a heat generation element; a first common conductive layer configured to be connected to one of the pair of individual conductive layers; a second common conductive layer configured to be connected to the other of the pair of individual conductive layers; and an isolation layer configured to be provided between the one of the pair of individual conductive layers and the first common conductive layer, and between the other of the pair of individual conductive layers and the second common conductive layer, wherein the isolation layer is formed from a conductive material which has a lower solubility in ink than a material used for the pairs of individual conductive layers, the first common conductive layer and the second common conductive layer.
摘要:
A liquid discharge head includes a heat accumulation layer provided on a board, an energy generation element configured to generate energy to discharge liquid from a discharge port and including a heat generation resistor layer provided on the heat accumulation layer and formed of a material configured to generate heat through supply of electricity and a pair of electrodes connected to the heat generation resistor layer, and an insulation layer including a silicon compound and provided so as to cover the energy generation element, and a line formed of a metal material provided between the heat accumulation layer and the insulation layer, and in at least a portion at a position closer to a flow path than the energy generation element.
摘要:
An inkjet printhead substrate comprises: a pair of individual conductive layers configured to supply electrical power to a heat generation element; a first common conductive layer configured to be connected to one of the pair of individual conductive layers; a second common conductive layer configured to be connected to the other of the pair of individual conductive layers; and an isolation layer configured to be provided between the one of the pair of individual conductive layers and the first common conductive layer, and between the other of the pair of individual conductive layers and the second common conductive layer, wherein the isolation layer is formed from a conductive material which has a lower solubility in ink than a material used for the pairs of individual conductive layers, the first common conductive layer and the second common conductive layer.
摘要:
Performing a high-speed recording operation using a slender liquid discharge head substrate causes an uneven temperature distribution for each energy generating element because the center portion of the liquid discharge head substrate is more liable to accumulate heat than the end portion thereof, which may affect the quality of a recorded image. For this reason, the surface of the energy generating element which contacts liquid is separated into a first region and a second region in which a protection film is thicker than the one in the first region, and the area in the first region for the element positioned at the end portion of the array of the elements is made greater than that in the first region at the center portion thereof.
摘要:
A liquid discharge head includes a heat accumulation layer provided on a board, an energy generation element configured to generate energy to discharge liquid from a discharge port and including a heat generation resistor layer provided on the heat accumulation layer and formed of a material configured to generate heat through supply of electricity and a pair of electrodes connected to the heat generation resistor layer, and an insulation layer including a silicon compound and provided so as to cover the energy generation element, and a line formed of a metal material provided between the heat accumulation layer and the insulation layer, and in at least a portion at a position closer to a flow path than the energy generation element.
摘要:
Performing a high-speed recording operation using a slender liquid discharge head substrate causes an uneven temperature distribution for each energy generating element because the center portion of the liquid discharge head substrate is more liable to accumulate heat than the end portion thereof, which may affect the quality of a recorded image. For this reason, the surface of the energy generating element which contacts liquid is separated into a first region and a second region in which a protection film is thicker than the one in the first region, and the area in the first region for the element positioned at the end portion of the array of the elements is made greater than that in the first region at the center portion thereof.
摘要:
When protective portions are independently provided for each energy generation element, a leakage current inspection between the protective portions and the energy generation elements cannot be performed at once. Therefore, there is a concern that the inspection in manufacturing a substrate for liquid ejection head requires time. Therefore, the substrate for liquid ejection head is manufactured by performing a leakage current inspection between a connecting portion that is electrically connected to plurality of protective portions and a terminal to which the plurality of energy generation elements are connected, and thereafter removing the connecting portion.
摘要:
There are provided a printing head substrate, an ink jet printing head and an ink jet printing apparatus, which accurately detect a temperature state in the central part of a heater array on the substrate and restrict an area of the substrate to a minimum. A printing head substrate has a plurality of heating elements, a plurality of ink supply openings, a logic circuit for driving the heating elements; a substrate temperature detecting element for detecting a temperature of the printing head substrate, and input and output pads for carrying out reception and supply of a signal between a printing apparatus, and the logic circuit and the substrate temperature detecting element, wherein a beam integral with the substrate is provided between the plurality of ink supply openings, and the substrate temperature detecting element is arranged on the beam.
摘要:
A print head is provided that well preserves ink characteristics upon printing by way of performing effective ink preliminary heating. The print head has heaters, and ejection openings formed at locations corresponding to the heaters. Viewed from the side from which ink is ejected, a sub-heater is established in the print head between the ink supply port and the print elements such as to surround the ink supply port.