Incremental printing of symbolic information – Ink jet – Controller
Patent
1995-07-11
1997-08-12
Fuller, Benjamin R.
Incremental printing of symbolic information
Ink jet
Controller
347 17, B41J 205
Patent
active
056570619
ABSTRACT:
An ink-cooled thermal ink jet printhead has an efficient heat exchanger located on the back side of the printhead that eliminates the need for heat sinks. All ink flowing to the firing chamber goes through the heat exchanger. The geometry of the heat exchanger is chosen so that almost all the residual heat absorbed by the printhead substrate is transferred to the ink as it flows to the firing chamber. Additionally, the pressure drop of the ink flowing through the heat exchanger is low enough so that it does not significantly reduce the refill rate of the firing chambers. The heat exchanger can have one or more active heat exchanger sides. The heat exchanger has little thermal mass itself and significantly reduces the thermal mass of printhead by eliminating the need for a heat sink. This reduces the warm-up time of the printhead to a fraction of a second.
REFERENCES:
patent: 4262188 (1981-04-01), Beach
patent: 4313684 (1982-02-01), Tazaki et al.
patent: 4490728 (1984-12-01), Vaught et al.
patent: 4510507 (1985-04-01), Ishikawa
patent: 4791435 (1988-12-01), Smith et al.
patent: 4910528 (1990-03-01), Firl et al.
patent: 5017941 (1991-05-01), Drake
patent: 5066964 (1991-11-01), Fukunda et al.
patent: 5084713 (1992-01-01), Wong
patent: 5107276 (1992-04-01), Kneezel et al.
patent: 5109234 (1992-04-01), Otis, Jr. et al.
patent: 5459498 (1995-10-01), Seccombe et al.
Patent Abstracts of Japan, vol. 5, No. 25 (M-55)(697) 14 Feb. 1981 Japanese Appln No. 54-59676.
Fong-Ho May
Hand Lawrence A.
Nielsen Niels J.
Seccombe Dana
Yeung King-Wah Walter
Dickens Charlene
Fuller Benjamin R.
Griffin Roland
Hewlett--Packard Company
Maker II Edward
LandOfFree
Ink-cooled thermal ink jet printhead does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ink-cooled thermal ink jet printhead, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ink-cooled thermal ink jet printhead will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-163514