Source: http://www.google.com/patents/US7988247?dq=5958006
Timestamp: 2015-03-01 04:36:15
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Matched Legal Cases: ['application No. 06', 'application No. 05725642', 'application No. 2003', 'application No. 2003', 'application No. 06', 'application No. 200710161961', 'application No. 2007', 'application No. 05725642', 'application No. 08713698', 'application No. 05855801', 'application No. 2007', 'application No. 2386737', 'application No. 2386737', 'application No. 2620776', 'application No. 038199505', 'application No. 200580014141', 'application No. 2005800456475', 'application No. 06', 'application No. 2004', 'application No. 10', 'application No. 10', 'application No. 10']

Patent US7988247 - Ejection of drops having variable drop size from an ink jet printer - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA method for causing ink to be ejected from an ink chamber of an ink jet printer includes causing a first bolus of ink to be extruded from the ink chamber; and following lapse of a selected interval, causing a second bolus of ink to be extruded from the ink chamber. The interval is selected to be greater...http://www.google.com/patents/US7988247?utm_source=gb-gplus-sharePatent US7988247 - Ejection of drops having variable drop size from an ink jet printerAdvanced Patent SearchPublication numberUS7988247 B2Publication typeGrantApplication numberUS 11/652,325Publication dateAug 2, 2011Filing dateJan 11, 2007Priority dateJan 11, 2007Also published asCN101622133A, CN101622133B, EP2106349A2, EP2106349A4, US20080170088, WO2008089021A2, WO2008089021A3, WO2008089021B1Publication number11652325, 652325, US 7988247 B2, US 7988247B2, US-B2-7988247, US7988247 B2, US7988247B2InventorsWilliam Letendre, Robert Hasenbein, Deane A. GardnerOriginal AssigneeFujifilm Dimatix, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (100), Non-Patent Citations (73), Referenced by (3), Classifications (14), Legal Events (2) External Links: USPTO, USPTO Assignment, EspacenetEjection of drops having variable drop size from an ink jet printer
US 7988247 B2Abstract
A method for causing ink to be ejected from an ink chamber of an ink jet printer includes causing a first bolus of ink to be extruded from the ink chamber; and following lapse of a selected interval, causing a second bolus of ink to be extruded from the ink chamber. The interval is selected to be greater than the reciprocal of the fundamental resonant frequency of the chamber, and such that the first bolus remains in contact with ink in the ink chamber at the time that the second bolus is extruded.
This invention relates to ink-jet printers, and in particular, to ink-jet printers capable of ejecting drops having variable drop sizes.
In a piezoelectric ink jet printer, a print head includes a large number of ink chambers, each of which is in fluid communication with an orifice and with an ink reservoir. At least one wall of the ink chamber is coupled to a piezoelectric material. When actuated, the piezoelectric material deforms. This deformation results in a deformation of the wall, which in turn launches a pressure wave that ultimately pushes ink out of the orifice while drawing in additional ink from an ink reservoir.
In one aspect, the invention features a method for causing ink to be ejected from an ink chamber of an ink jet printer. Such a method includes causing a first bolus of ink to be extruded from the ink chamber; and following lapse of a selected interval, causing a second bolus of ink to be extruded from the ink chamber. The interval is selected to be greater than the reciprocal of the fundamental resonant frequency of the chamber, and such that the first bolus remains in contact with ink in the ink chamber at the time that the second bolus is extruded.
FIG. 1 shows an ink chamber from an ink jet print head;
FIG. 1 shows an ink chamber 10 associated with one of many ink jets in a piezoelectric print head of an ink jet printer. The ink chamber 10 has an active wall 12 coupled to a piezoelectric material that is connected to a power source 14 under the control of a controller 16. A passageway 18 at one end of the ink chamber 10 provides fluid communication with an ink reservoir 20 shared by many other ink chambers (not shown) of the print head. At the other end of the ink chamber 10, an orifice 22 formed by an orifice plate 24 provides fluid communication with the air external to the ink chamber 10.
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No. 12/486,693 (published as US 2010-0039479).Referenced byCiting PatentFiling datePublication dateApplicantTitleUS8544976Jan 26, 2011Oct 1, 2013Labcyte Inc.Focus-activated acoustic ejectionUS8882226Sep 3, 2013Nov 11, 2014Labcyte Inc.Focus-activated acoustic ejectionUS20120218333 *Feb 23, 2012Aug 30, 2012Baku NishikawaDrive apparatus for liquid ejection head, liquid ejection apparatus and inkjet recording apparatus* Cited by examinerClassifications U.S. Classification347/9, 347/10, 347/11International ClassificationB41J2/05Cooperative ClassificationB41J2/04588, B41J2/04581, B41J2/04573, B41J2/04593, B41J2/04595European ClassificationB41J2/045D66, B41J2/045D65, B41J2/045D58, B41J2/045D53, B41J2/045D62Legal EventsDateCodeEventDescriptionJan 31, 2012CCCertificate of correctionMar 17, 2007ASAssignmentOwner name: FUJIFILM DIMATIX, INC., NEW HAMPSHIREFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LETENDRE, WILLIAM;HASENBEIN, ROBERT;GARDNER, DEANE A.;REEL/FRAME:019026/0086;SIGNING DATES FROM 20070226 TO 20070228Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LETENDRE, WILLIAM;HASENBEIN, ROBERT;GARDNER, DEANE A.;SIGNING DATES FROM 20070226 TO 20070228;REEL/FRAME:019026/0086RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services