Incremental printing of symbolic information – Ink jet – Controller
Patent
1992-07-31
1995-04-11
Fuller, Benjamin R.
Incremental printing of symbolic information
Ink jet
Controller
347 17, 347 19, 347 88, 374 20, 2221462, B41J 2175
Patent
active
054063159
ABSTRACT:
A method and system for regulating the temperature of a hot melt ink wherein light reflected from a phase change material adjacent to the ink is detected, and a closed loop control signal proportional to the intensity of the reflected light is generated. The control signal is applied to a heater element for the ink and provides good temperature control thereof. In addition, the phase change material is used to generate an ink level indication signal which is also processed in a closed loop servo system in order to provide control over levels of the hot melt ink during operation of an ink jet printhead. In the embodiment of the present invention for controlling both ink temperature and ink levels within a pen body housing, there is provided a means and method for simultaneously sensing the liquid level and temperature at the solid/liquid interface within the pen body housing. This is done by simultaneously detecting the reflectivity of separate phase change material components located within or adjacent to the pen body housing and then processing closed loop detection signals which are optically coupled by way of control logic from the separate phase change material components to one or more heater elements located adjacent to the pen body housing. The present invention is also directed to a new and improved pen body construction which is uniquely suited for implementing the above novel method and system. This construction employs a flex circuit, an ink jet printhead and a multiple sensor assembly mounted adjacent to one wall of the pen body housing.
REFERENCES:
patent: 3143876 (1964-08-01), Wallgren
patent: 4593292 (1986-06-01), Lewis
patent: 4607266 (1986-08-01), DeBonte
patent: 4667206 (1987-05-01), DeYoung
patent: 5235350 (1993-08-01), Lin et al.
Loiselle, J. T.; Bilevel Optical Ink Level Detector; IBM Technical Disclosure Bulletin; vol. 18, No. 4; Sep. 1975; 1095-96.
Allen Ross R.
West William J.
Barlow John
Fuller Benjamin R.
Hewlett--Packard Company
LandOfFree
Method and system for remote-sensing ink temperature and melt-on does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and system for remote-sensing ink temperature and melt-on, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for remote-sensing ink temperature and melt-on will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1541964