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5924197 |
Method for manufacturing an ink jet printing head
A method for manufacturing an ink jet printing head comprises a step of joining together a base board having ink discharge pressure generating elements, which also forms the bottom of a plurality...
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5916452 |
Process for the production of an ink jet head
A process for producing an ink jet head having ink discharging outlets, a substrate with energy generating elements that discharge ink, ink pathways aligned with the energy generating elements and...
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5912685 |
Reduced crosstalk inkjet printer printhead
High frequency of droplet ejection with minimized crosstalk and a uniform large ink droplet weight are realized in an inkjet printer printhead which employs two ink feed channels to couple an ink...
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5902492 |
Liquid jet recording head manufacturing method by anisotropic etching
A liquid jet recording head comprising discharge energy generating means for generating discharge energy in the recording liquid, and a liquid flow passage forming substrate for forming liquid flow...
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5900894 |
Ink jet print head, method for manufacturing the same, and ink jet recording device
An ink jet print head is disclosed which comprises: a head chip having a plurality of heating elements thereon, a flow passage forming member including a plurality of injection ports respectively...
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5872582 |
Microfluid valve for modulating fluid flow within an ink-jet printer
A valve device is incorporated within a printhead of an ink-jet pen for regulation of ink flow and pressure within the printhead. The valve device includes a valve member comprising a resiliently...
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5870123 |
Ink jet printhead with channels formed in silicon with a (110) surface orientation
In an ink-jet printhead, the individual channels for ejecting ink onto a print medium are orientation dependently etched along the (111) planes perpendicular to the (110) surface orientation of a...
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5869595 |
Polyimide curing process and improved thermal ink jet printhead prepared thereby
Disclosed is a process which comprises reacting a polyimide precursor with borane. Also disclosed is a thermal ink jet printhead containing a layer comprising the product of this reaction.
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5867192 |
Thermal ink jet printhead with pentagonal ejector channels
In an ink-jet printhead, channels in which liquid ink is nucleated by a heating element defines five sides in cross-section. One of the sides is created by the main surface of a heater chip which...
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5859655 |
Photoresist for use in ink jet printers and other micro-machining applications
An inkjet printer head formed from a photoimageable organic material. This material provides for a spin-on epoxy based photoresist with image resolution and adhesion to hard to bond to metals such...
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5851412 |
Thermal ink-jet printhead with a suspended heating element in each ejector
In a thermal ink-jet printhead, a set of heating elements are formed in the main surface of a semiconductor chip. Channels are formed by etching within the semiconductor chip underneath each of the...
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5847737 |
Filter for ink jet printhead
An ink jet printhead includes a chip layer having a via for receiving ink, and having at least one actuator. A barrier layer is disposed adjacent the chip layer, and forms at least one throat which...
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5841452 |
Method of fabricating bubblejet print devices using semiconductor fabrication techniques
A method of fabricating bubblejet print devices uses semiconductor fabrication techniques, and this method involves forming a heater means and an electrical connection to the heater means on a...
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5821962 |
Liquid ejection apparatus and method
A liquid ejecting head for ejecting liquid by generation of a bubble includes an ejection outlet through which the liquid is ejected; a liquid flow path in fluid communication with the ejection...
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5818516 |
Ink jet cartridge having improved heat management
An ink cartridge for use in a thermal ink jet printer has a printhead with an edgeshooter configuration and improved heat management. The cartridge has a supply of ink in a chamber and a passageway...
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5818478 |
Ink jet nozzle placement correction
Nozzles in an ink jet printhead nozzle plate are laser formed into the nozzle plate at a spacing differing from that of the corresponding ink heating elements by a function of the thermal expansion...
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5815181 |
Micromachine, liquid jet recording head using such micromachine, and liquid jet recording apparatus having such liquid jet recording headmounted thereon
A micromachine comprises at least one heat generating unit arranged on the surface of a substrate, a housing for retaining liquid having a liquid retaining portion along the heat generating unit,...
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5808641 |
Liquid jet head manufacturing method and a liquid jet head manufactured by said manufacturing method
A manufacturing method of a liquid jet head comprises the discharge ports for discharging the ink, the liquid channels in communication to the discharge ports, and energy generating means for...
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5793393 |
Dual constriction inklet nozzle feed channel
An inkjet printhead includes multiple printing elements grouped in sets about an ink refill channel. Each printing element includes a firing chamber and resistive element in communication with the...
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5790149 |
Ink jet recording head
In an ink jet type recording head, nozzles 190 to 197 for jetting droplets of ink are arranged in such a manner that these nozzles are located along two line segments L1 and L2 which are inclined...
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5790154 |
Method of manufacturing an ink ejection recording head and a recording apparatus using the recording head
In an ink ejection recording head, a silicon dioxide layer is formed on the surface of a silicon substrate, a silicon nitride layer is formed on the silicon dioxide layer, and a plurality of...
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5774152 |
Ink jet recording head and method manufacturing thereof
A jetting element has a plurality of nozzles, a heating body for jetting ink droplets from the nozzles, and an ink chamber communicating with the nozzles. A manifold is bonded with the jetting...
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5760803 |
Ink jet recording transfer molding processes for forming an ink jet recording head and a recording apparatus using the heads
An ink jet recording apparatus includes a recording head having plural discharge openings for discharging ink, a liquid chamber for storing the ink to be supplied to the discharge openings, a...
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5755032 |
Method of forming an inkjet printhead with channels connecting trench and firing chambers
A method to eliminate ink trajectory errors when an inkjet printhead is fabricated is disclosed. In a preferred embodiment, a nozzle member containing an array of orifices is affixed to a barrier...
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5751317 |
Thermal ink-jet printhead with an optimized fluid flow channel in each ejector
A thermal ink-jet ejector having a fluid flow channel extending between an ink inlet and a nozzle for the ejection of liquid ink therefrom, includes a rear channel diffuser disposed between the...
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5745129 |
Ink jet head, ink jet apparatus and driving method therefor
An ink jet head has plural liquid ink paths, each having a discharge opening for discharging ink when energy is applied to ink in a corresponding ink path, and a common ink chamber communicating...
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5738799 |
Method and materials for fabricating an ink-jet printhead
An ink-jet printhead fabrication technique enables capillary channels for liquid ink to be formed with square or rectangular cross-sections. A sacrificial layer is placed over the main surface of a...
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5734399 |
Particle tolerant inkjet printhead architecture
In order to reduce particle clogging of ink firing chambers in an inkjet printer printhead, the barrier layer is configured to have a plurality of inner barrier islands, each associated with a...
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5726697 |
Ink jet recording apparatus having an optimally-dimensioned ink jet head structure
To increase ink jet recording head responsivity and/or decrease recording head size, an ink jet recording apparatus is provided having plural liquid passages, each having an ejection outlet through...
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5716533 |
Method of fabricating ink jet printheads
A method of fabricating ink jet printheads from channel plates with a low stress integral ink inlet filters and heater plates. The channel plates are obtained from p-type (100) silicon wafers, one...
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5711891 |
Wafer processing using thermal nitride etch mask
A method for forming v-shaped grooves in a substrate such as a channel plate is disclosed. A mask of silicon nitride formed by a thermal nitridation process protects the substrate during KOH etching.
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5708466 |
Ink jet head having parallel liquid paths and pressure-directing wall
An ink jet head includes a first liquid path, the end of which defines a discharge port through which ink is ejected, and a second liquid path having a discharge energy generating element for...
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5708465 |
Thermal ink-jet head
A thermal ink-jet head of the present invention is so designed as to improve operating frequency by surely trapping foreign substances and reducing the influence of a cross stroke. In the thermal...
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5703630 |
Ink jet head manufacturing method using ion machining and ink jet head manufactured thereby
An ink jet recording head manufacturing method for manufacturing ink jet recording head having an ink passage, wherein a droplet of ink is ejected through the passage from an ink ejection outlet at...
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5697144 |
Method of producing a head for the printer
To provide a method of fabricating, using thin-film processes only, a 1,600 dpi head with nozzles arranged two-dimensionally on a substrate, e.g., silicon wafer, a drive LSI, thin-film resistors...
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5694684 |
Manufacturing method for ink jet recording head
A manufacturing method for an ink jet recording head comprising ink ejection outlets, ink passages in fluid communication with the ink ejection outlets, an ink chamber for supplying ink to the ink...
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5686224 |
Ink jet print head having channel structures integrally formed therein
A plurality of a thermal ink jet printheads are fabricated from a heater wafer, on which a plurality of arrays of heaters, transducers and addressing logic are located on one surface thereof, by...
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5685074 |
Method of forming an inkjet printhead with trench and backward peninsulas
A means is provided to eliminate ink trajectory errors when an inkjet printhead is fabricated as described below. In a preferred embodiment, a nozzle member containing an array of orifices is...
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5669125 |
Method of manufacturing an ink-jet recording head
An ink-jet recording head includes a piezoelectric element, an ink cavity which is formed in the piezoelectric element to have a hollow shape and is filled with an ink, electrodes to which a drive...
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5665249 |
Micro-electromechanical die module with planarized thick film layer
An improved microelectromechanical device, such as a thermal ink jet die or printhead, is formed by the alignment of two planar substrates bonded together by an intermediate thick film layer of...
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5666143 |
Inkjet printhead with tuned firing chambers and multiple inlets
An inkjet printer printhead is coupled to an ink source and has a plurality of ink firing chambers dimensionally defined by a barrier layer disposed between a substrate and an orifice plate. Two...
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5663752 |
Ink jet head free of debonding between a substrate and ink flow path walls formed on said substrate
An ink jet head having a plurality of ink flow path walls forming a plurality of ink pathways by joining said plurality of ink flow path walls to a substrate for an ink jet head, said plurality of...
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5658471 |
Fabrication of thermal ink-jet feed slots in a silicon substrate
Improved methods for fabricating the ink feed slots in silicon substrate for use in thermal ink-jet print heads is disclosed. One method involves the partial anisotropic etching of an ink feed slot...
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5648805 |
Inkjet printhead architecture for high speed and high resolution printing
An improved ink flow path between an ink reservoir and ink ejection chambers in an inkjet printhead is disclosed along with a preferred printhead architecture. In the preferred embodiment, a...
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5648804 |
Compact inkjet substrate with centrally located circuitry and edge feed ink channels
An inkjet printhead includes a compact substrate having a pair of elongated edge portions for ink channel architecture, a central interior for substrate circuitry, and a pair of truncated end...
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5638101 |
High density nozzle array for inkjet printhead
Described is an inkjet print cartridge including an ink reservoir; a substrate having a plurality of individual ink firing chambers with an ink firing element in each chamber; said ink firing...
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5635966 |
Edge feed ink delivery thermal inkjet printhead structure and method of fabrication
This invention provides an apparatus and method of fabrication thereof for an inkjet printhead with an improved ink flow path between an ink reservoir and vaporization chambers in an inkjet...
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5619236 |
Self-cooling printhead structure for inkjet printer with high density high frequency firing chambers
Disclosed is an inkjet print cartridge having an ink reservoir; a substrate having a plurality of individual ink firing chambers with an ink firing element in each chamber along a top surface of...
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5608436 |
Inkjet printer printhead having equalized shelf length
A printhead for an inkjet printer employs an ink fill slot having an extended portion disposed as a depression on the primary surface of the printhead substrate. The barrier layer of the printhead...
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5594481 |
Ink channel structure for inkjet printhead
Disclosed is an inkjet print cartridge including an ink reservoir; a substrate having a plurality of individual ink firing chambers with an ink firing element in each chamber along a top surface of...
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