Silverbrook Research Pty Ltd

Zamtec Limited

David Charles Psaila

Kia Silverbrook

Akira Nakazawa

Garry Raymond Jackson

Jan Waszczuk

Jonathan Mark Bulman

A pagewidth printhead assembly includes a plurality of printhead integrated circuits linked end to end across a width of the pagewidth printhead assembly; a support molding to which the plurality of printhead integrated circuits are sealed, the support molding defining a plurality of ink channels; a plurality of etched channels provided on an underside of each printhead integrated circuit, each etched channel defining along a length thereof a plurality of ink inlets for receiving ink from one of the plurality of ink channels; and a polymer sealing film for sealing the printhead integrated circuits to the support molding, the polymer sealing film defining therethrough a plurality of openings. Each of the plurality of etched channels is divided into two or more separate channel sections separated by respective channel wall structures. Each opening of the polymer film is in fluid communication with ink inlets of two separate channel sections.

Printhead assembly incorporating plural printhead integrated circuits sealed to support member with polymer sealing film

A method of supplying ink to ink ejection nozzles on a printhead for an inkjet printer with a print engine controller for controlling the printhead operation involving the provision a printhead IC having an array of the ink ejection nozzles formed on a substrate, the provision of circuitry for electrical connection to the print engine controller, the provision of a support member for supporting the printhead integrated circuit and the circuitry within the printer, the provision of a thermoplastic polymer sealing film, and securing the polymer film to a mounting surface of the support member by applying heat and pressure for a predetermined time, mounting the printhead integrated circuit and the circuitry to the support member via the polymer film and, electrically connecting the circuitry to the printhead integrated circuit. The mounting surface has ink feed channels formed in it and the polymer film is attached to the mounting surface between the ink feed channels and the printhead integrated circuits. The polymer film has an array of apertures such that the ejection nozzles are in fluid communication with the ink feed channels.

Method of supplying ink to ink ejection nozzles

A method of sealing an attachment face of a MST device to a mounting surface on a support member, the attachment face having an aperture connected to a first fluid conduit, the attachment face having a second aperture connected to a second conduit, the method comprising the steps of: Using a thermosetting adhesive instead of a thermoplastic adhesive provides a far more reliable seal. The bond between the thermoplastic adhesive and the MST device surface is prone to thermal fatigue and leakage or outright failure.

Method of sealing a face of a MST device

A method of attaching a MST device to a support member with an adhesive film, the MST device having an attachment face and a first fluid conduit connected to a first aperture in the attachment face; By pre-drilling the holes in the film, the attachment process is quicker and the resulting fluidic seal in more reliable.

Method of attaching fluidic MST devices to a support member

A method of fabricating a plurality of inkjet nozzles on a substrate. The method comprises the steps of: (a) providing a substrate having a plurality of trenches corresponding to ink inlets; (b) depositing sacrificial material so as fill the trenches and form a scaffold on the substrate; (c) defining openings in the sacrificial material; (d) depositing roof material over the sacrificial material to form nozzle chambers and filter structures simultaneously; (e) etching nozzle apertures through the roof material; and (f) removing the sacrificial material.

Method of producing an inkjet printhead for an inkjet printer with a print engine controller

A micro-systems technology (MST) device for attachment to an adhesive surface. The MST device has By profiling the attachment surface so there is a recess next to the first aperture, there is less risk that adhesive will be squeezed into the conduit and impair fluid flow.

MST device for attachment to an adhesive surface

A method of attaching MST devices to a support member via an adhesive film, the MST devices each having an attachment face with a first aperture and the support member having a mounting surface with second apertures corresponding to each of the first apertures respectively and a fiducial marker for each of the MST devices respectively, and the adhesive film having a plurality of openings. The method involving positioning the adhesive film using the fiducial marker and the corresponding opening such that the openings register with at least part of the second apertures in the mounting surface, applying the adhesive film to the mounting surface, positioning each of the MST devices relative to the respective openings, and, attaching the MST devices with heat and pressure such that the openings establish the respective first and second apertures.

Growing community of inventors

Balmain, Australia

David Charles Psaila