摘要:
A micro-fluid ejection device structure, a multi-fluid cartridge containing the ejection device structure, and methods for making the ejection device structure and cartridge. The ejection device includes an ejection head substrate having a fluid supply side and a device side and containing two or more fluid flow paths therein for supplying fluid from the fluid supply side to the device side thereof. A multi-channel manifold is attached to the fluid supply side of the ejection head substrate for providing fluid from two or more fluid reservoirs to the fluid flow paths in the ejection head substrate. The multi-channel manifold has fluid flow channels therein in fluid flow communications with the fluid flow paths in the ejection head substrate and the manifold consists essentially of a patterned photoresist material.
摘要:
A method is provided for making a multi-fluid cartridge for holding multiple fluids in segregated containment localities. The cartridge body contains fluid supply paths in fluid flow communication with the containment localities. A nozzle plate is attached to a device side of each of a plurality of defined ejection head substrates on a semiconductor wafer. Each of the ejection head substrates has a fluid supply side and two or more fluid flow paths therein for supplying fluid from the supply side to the device side thereof. The fluid flow paths in the ejection head substrates have a flow path density of greater than about 1.0 flow paths per millimeter. The wafer is diced to provide a plurality of micro-fluid ejection device structures. A circuit device is attached to the device side of each of the substrates. An adhesive is stencil printed with a bond line density of at least about 1.2 mm−1 on the micro-fluid ejection device structures or on the cartridge body. At least one of the micro-fluid ejection device structures and attached circuit is adhesively bonded to the cartridge body for flow of fluid from the containment localities to the device side thereof.
摘要:
A method is provided for making a multi-fluid cartridge for holding multiple fluids in segregated containment localities. The cartridge body contains fluid supply paths in fluid flow communication with the containment localities. A nozzle plate is attached to a device side of each of a plurality of defined ejection head substrates on a semiconductor wafer. Each of the ejection head substrates has a fluid supply side and two or more fluid flow paths therein for supplying fluid from the supply side to the device side thereof. The fluid flow paths in the ejection head substrates have a flow path density of greater than about 1.0 flow paths per millimeter. The wafer is diced to provide a plurality of micro-fluid ejection device structures. A circuit device is attached to the device side of each of the substrates. An adhesive is stencil printed with a bond line density of at least about 1.2 mm−1 on the micro-fluid ejection device structures or on the cartridge body. At least one of the micro-fluid ejection device structures and attached circuit is adhesively bonded to the cartridge body for flow of fluid from the containment localities to the device side thereof.
摘要:
The invention provides a micro-fluid ejection head for a micro-fluid ejection device and a method for making a micro-fluid ejection head. The micro-fluid ejection head includes a semiconductor substrate containing fluid ejection devices electrically connected to contact pads on a surface thereof. A TAB circuit including lead beams is electrically connected to the contact pads on the semiconductor substrate surface. A nozzle plate structure is provided and installed relative to the TAB circuit so as to substantially cover the lead beams and contact pads in order to protect the lead beams and contact pads from exposure to fluid ejected by the micro-fluid ejection device. The micro-fluid ejection head is effective to reduce contact between electrical components and the fluid without the use of a separate encapsulant material.
摘要:
A multi-fluid body and an ejection head substrate connected in fluid flow communication with the multi-fluid body for ejecting multiple fluids therefrom. The multi-fluid body includes at least two segregated fluid chambers. Independent fluid supply paths lead from each of the fluid chambers providing fluid to multiple fluid flow paths in the ejection head substrate. The ejection head substrate is attached adjacent an ejection head area of the body. The fluid flow paths in the ejection head substrate have a flow path density of greater than about one flow paths per millimeter.
摘要:
Sealing tapes, such as those utilizing an ultra-thin adhesive layer for attaching the sealing tape to the nozzle member of an ink jet printhead. One such ultra-thin adhesive has a thickness of 3 microns or less, and can be applied using pressure or both heat and pressure.
摘要:
An inkjet printhead has a body and a heater chip attached thereto. A nozzle plate on the heater chip includes a periphery and plurality of nozzle holes. An encapsulant bead lines the periphery of the nozzle plate and has a leading edge extending in a direction away from the periphery toward the plurality of nozzle holes. The boundary of the bead embodies an irregular shape and the leading edge exists less than about 500 microns from any of the nozzle holes. A tape attaches to the nozzle plate and covers each of the nozzle holes. The tape does not, however, touch the encapsulant bead. Preferably, the tape has a narrow width portion shorter than a width of the nozzle plate. In this manner, the encapsulant bead may encroach upon the nozzle holes closer than heretofore known. In turn, the heater chip can have reduced size and silicon savings.
摘要:
A progressive stencil printing system and method for applying encapsulant onto an inkjet printhead body is described. The system relates to a continuous stencil printing apparatus that can print encapsulant on different types of inkjet printhead bodies and clean the stencil during production.
摘要:
An inkjet printhead has a body and a heater chip attached thereto. A nozzle plate on the heater chip includes a periphery and plurality of nozzle holes. An encapsulant bead lines the periphery of the nozzle plate and has a leading edge extending in a direction away from the periphery toward the plurality of nozzle holes. The boundary of the bead embodies an irregular shape and the leading edge exists less than about 500 microns from any of the nozzle holes. A tape attaches to the nozzle plate and covers each of the nozzle holes. The tape does not, however, touch the encapsulant bead. Preferably, the tape has a narrow width portion shorter than a width of the nozzle plate. In this manner, the encapsulant bead may encroach upon the nozzle holes closer than heretofore known. In turn, the heater chip can have reduced size and silicon savings.
摘要:
Methods for disassembling at least two components of an inkjet printhead include applying heat, preferably in the form of laser energy, to one of the components and wholly or partially separating the components thereafter. The disassembly enables ease of refilling the inkjet printhead or replacing original parts. In one embodiment, the components comprise inkjet printhead lids and bodies originally laser welded to one another. In another aspect, methods of disassembly include laser unwelding inkjet printhead lids and bodies according to whether the inkjet printhead body embodies a mono or color ink body type through use of selective control of one or more laser light sources to illuminate the inkjet printhead lid in a specific pattern of light. Still other aspects include a disassembled inkjet printhead having components with laser welding residue thereon. The laser welding residue may have substantially matching edge lines between the two components.