Hewlett-Packard Development Company, L.P. - Houston TX
International Classification:
B41J 2175
US Classification:
347 85
Abstract:
A ball check valve for use in a bulk ink supply system of an inkjet printing system, for disposal in an ink flow path between an ink reservoir and a printhead, so as to control back pressure at the printhead thereby reducing the occurrence of de-priming of the printhead, including a valve body defining a chamber with an inlet and an outlet; a ball disposed in the chamber, the ball having a diameter; a ball retainer disposed in the inlet, the ball retainer having an aperture with a diameter which is less than the diameter of the ball, wherein backflow of ink in the chamber causes the ball to seat against the ball retainer, placing the ball check valve in a closed position such that ink flow through the aperture is restricted.
Inkjet Printing Using Pigmented And Dye-Based Inks
Max S Gunther - La Jolla CA George M. Sarkisian - San Diego CA Yinan Xu - San Diego CA
Assignee:
Hewlett-Packard Development Company, L.P. - Houston TX
International Classification:
B41J 2205
US Classification:
347 43, 347 15, 347100
Abstract:
An inkjet printing system and method for printing using both pigmented inks and dye-based inks. A supply of pigmented ink of a certain color is provided, along with another supply of dye-based ink of the same color. A pigmented nozzle array controllably deposits drops of the pigmented ink of the certain color, while a dye-based nozzle array controllably deposits drops of the dye-based ink of the same color. A region of a media is printed with the color by depositing, as governed by a controller, drops from the pigmented supply and drops from the dye-based supply on different subregions of the region.
Replenishment System With An Open-Valve Printhead Fill Port Continuously Connected To A Liquid Supply
Paul S. Wu - Encinitas CA Erich E. Coiner - Poway CA Mark E. Young - Santa Rosa CA Max Stephen Gunther - La Jolla CA David S. Hunt - San Diego CA
Assignee:
Hewlett-Packard Development Company, LP. - Houston TX
International Classification:
B41J 2175
US Classification:
347 85
Abstract:
Techniques for liquid replenishment in a printer/plotter. An ink delivery system (IDS) is employed wherein the on-carriage spring reservoir of the print cartridge is manually and securely connected to the off-carriage reservoir. A pen cartridge that uses an internal spring to provide vacuum pressure is connected from an inlet port through a unitary coupler to an ink reservoir located off the scanning carriage axis. The coupler serves to align as well as to secure two mating valves to securely hold them together in an open latched position which is not intended to be modified or disconnected until the entire ink supply has been depleted. A replaceable ink supply module for providing replenishment of an inkjet printhead includes a collapsible bag, an enclosure box, a connective tube, and an on/off valve. These four components are incorporated into a composite sealed system which remains intact during shipment, storage, installation and operation. The collapsible bag is placed inside the protective enclosure box and has an end-connect outlet permanently attached to one end of the connective tube.
Mohammad M Samii - La Jolla CA, US Daniel L Briley - Escondido CA, US Victor T. Escobedo - Bonita CA, US Max S Gunther - Ridgecrest CA, US
Assignee:
Hewlett-Packard Development Company, L.P. - Houston TX
International Classification:
B41J 2/17 B41J 2/175
US Classification:
347 86, 347 84, 347 85
Abstract:
Embodiments of the present invention include hybrid ink delivery systems which allow a flexible arrangement of free ink supplies to be connected to multiple printhead assemblies, while preventing printhead deprime or drooling during setup, and provide control and verification of ink supply replacement through the use of integral memory components on the in supplies.
Interchangeable Fluid Interconnect Attachment And Interface
Max Stephen Gunther - La Jolla CA Ignacio De Olazabal - Barcelona, ES
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
B41J 2175
US Classification:
347 85
Abstract:
An inkjet printing system provides an on/off valve adapted for periodic engagement with an inlet port on a print cartridge mounted in a carriage. The valve is connected to an ink supply which is located off the carriage. A manually actuated set of individual locking gates allows each valve to be separately mounted on a holder capable of carrying multiple valves. As the ink reservoir in the print cartridge is slowly depleted during operation of the printing system, a mechanism periodically moves the valves from a first passive position separated from the print cartridges to a second active position engaged with the inlet port of the print cartridges in order to allow replenishment without removing the print cartridges from the carriage.
Printing System With Single On/Off Control Valve For Periodic Ink Replenishment Of Inkjet Printhead
Max S. Gunther - La Jolla CA Ignacio Olazabal - Sant Cugat del Valles, ES Mark E. Young - Santa Rosa CA Elizabeth Zapata - Barcelona, ES Joseph E. Scheffelin - Poway CA David S. Hunt - San Diego CA Alfred U. Zepeda - San Marcos CA
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
B41J 2175
US Classification:
347 85
Abstract:
An inkjet printing system provides an on/off valve adapted for periodic engagement with an inlet port on a print cartridge mounted in a carriage. The valve is connected to an ink supply which is located off the carriage. As the ink reservoir in the print cartridge is slowly depleted during operation of the printing system, a mechanism periodically moves the valve from a first passive position separated from the print cartridge to a second active position engaged with the inlet port of the print cartridge in order to allow replenishment of the ink reservoir in the print cartridge without removing the print cartridge from the carriage.
Assembly Technique Using Modular Ink Delivery Components For Installation In An Inkjet Printer
Erich E. Coiner - Poway CA Paul S. Wu - Encintas CA Max S. Gunther - La Jolla CA Ronald D. Stephens - Escondido CA
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
B41J 2175
US Classification:
347 49
Abstract:
An ink replenishment kit and method for an inkjet printer includes a replaceable ink supply module providing replenishment of an inkjet printhead, The module includes a collapsible bag, an enclosure box, a connective tube, and an on/off valve. These four components are incorporated into a composite sealed system which remains intact during shipment, storage, installation and operation. A coupler is provided to securely attach a print cartridge inlet with the on/off valve to hold them together in an open position allowing ink to be replenished into the print cartridge from the collapsible bag.