摘要:
A recording head has a liquid channel defining member for defining a liquid channel communicated to a discharging opening for discharging ink, and a base member having a plurality of electricity-heat converting elements for generating heat to be transmitted to the ink filling the liquid channel. A matrix wiring portion is connected electrically to the electricity-heat converting elements, respectively. The matrix wiring portion has a multi-layer constitution having a first wiring and a second wiring. The second wiring is provided through an insulating layer on the first wiring, and the plurality of electricity-heat converting elements are provided on the insulating layer.
摘要:
An ink jet recording head includes energy generators for generating the energy used to discharge ink and a substrate on which a circuit electrically connected to the energy generators is formed. Also provided is a protective member on an insulating layer on the substrate above the energy generators. The area of a protective member which is in contact with the ink is made to be as small as possible.
摘要:
Disclosed is a method of including the steps of preparing a substrate having a flow-path-wall member; bonding the flow-path-wall member to a resin layer that is composed of a photo-curing resin and serves as the ejection port member such that spaces serving as the flow paths are provided between the substrate and the photo-curing resin; providing through-holes in the resin layer such that the spaces communicate with the outside air; exposing part of the resin layer to light to form an exposed portion and an unexposed portion; heating the exposed portion of the resin layer; and removing the unexposed portion from the heated resin layer to form the ejection ports, removing the unexposed portion from the heated resin layer to form the ejection ports, thereby forming the ejection port member.
摘要:
The present invention is a method of manufacturing a liquid discharge head, which includes providing a substrate on which a solid member is disposed to surround a region that becomes the flow path, and a metal layer made of a metal or a metal compound is disposed inside of the region, forming a mold made of a metal or a metal compound inside of the region, disposing a cover layer made of a resin to cover the solid member and the mold in contact with the solid member and the mold wherein the solid member and the metal are formed with a distance therebetween, and removing the mold to form the flow path.
摘要:
The present invention is a method of manufacturing a liquid discharge head, which includes providing a substrate on which a solid member that becomes a flow path wall member is disposed to surround a region that becomes a flow path, forming a mold made of a metal or a metal compound inside of the region, disposing a cover layer made of a resin to cover the solid member and the mold, and removing the mold to form the flow path.
摘要:
The present invention provides a method of producing a liquid ejection head, the method including the steps of preparing a substrate having a flow-path-wall member; bonding the flow-path-wall member to a resin layer that is composed of a photo-curing resin and serves as an ejection port member such that spaces serving as the flow paths are provided inside; providing through-holes in the resin layer such that the spaces communicate with the outside air; exposing part of the resin layer; heating the exposed portion of the resin layer; and removing the unexposed portion from the heated resin layer to form the ejection ports, thereby forming the ejection port member in the resin layer.
摘要:
A fuse element can be reliably blown and data that corresponds to whether or not the fuse element has been blown can be stored with high reliability. A resistor element is provided in a circuit through which an electric current flows to blow the fuse element in the ink jet printing head. The resistor element adjusts the electric current so that, in the process of blowing the fuse element, the current continues to flow for a predetermined duration even after a maximum current has passed through the fuse element. The predetermined duration is longer than a period from a time point when the electric current rises to a time point when the electric current reaches the maximum current.
摘要:
In an ink jet head circuit board including a heater for generating thermal energy used for ejecting ink in response to application of electricity, a drop in thermal energy efficiency is prevented while reducing an area of the heater to achieve higher-resolution and higher-image-quality printing, and damages on the heater attributable to a manufacturing process are avoided. To achieve this, a resistor layer is disposed on an electrode wire layer; and two protective layers are disposed thereon. Then the upper protective layer is removed in a site above the heater. Accordingly, it is possible to dispose the protective layers without causing a decrease in an effective bubble generating region, and to improve thermal energy efficiency by reducing the effective thickness of the protective layer above the heater. Moreover, the resistor layer is covered with the first protective layer and is thereby prevented from adverse effects in the manufacturing process such as etching processes.
摘要:
An ink jet print head substrate capable of precisely blowing fuse element to store data reliably is provided. An ink jet print head incorporating such a substrate and an ink jet printing apparatus are also provided. The interlayer insulating film formed over the fuse element is made of a material that has a lower melting point than the material of the fuse element and which forms a cavity therein by heat produced when the fuse elements is blown.
摘要:
A number of steps is reduced by manufacturing an electrode pad connecting a liquid discharge head to an external wiring by the same step of a common wiring for supplying an electric power to a discharge energy generating portion. A number of manufacturing steps of a head is reduced by forming a substrate for a liquid discharge head having an electrode pad and a common wiring for supplying an electric power to a discharge energy as a metal film made of the same material as the electrode pad in accordance with a plating in a step of forming the common wiring of the metal film in accordance with a plating.