Perforated ink transports for acoustic ink printing

Details Perforated ink transports for acoustic ink printing Perforated ink transports for acoustic ink printing

1987-06-02

1989-01-31

Goldberg, E. A.

Recorders

Markers and/or driving means therefor

With ink supply to marker

346 75, 400126, 4002022, G01D 1516

Patent

active

048019534

ABSTRACT:
An ink transport comprising a perforated belt or web configured carrier having a longitudinally repetitive pattern of relatively large diameter apertures extending through it is provided for delivering a regularly refreshed supply of liquid ink to the printhead of an acoustic ink printer. Ink is loaded into the apertures from the top and/or the bottom. Furthermore, the apertures within each repeat of the aperture pattern are on centers which cause them to laterally align, on a one-for-one basis, with the individual pixel positions within a pagewidth address field. The printhead, in turn, includes one or more droplet ejectors, each of which supplies an acoustic beam which converges to a relatively sharp (i.e., narrow waist diameter) focus approximately on the free surface of the ink entrained in the apertures, and the radiation pressure exerted by each beam is modulated to acoustically eject individual droplets of ink from the apertures on command to print an image on a nearby recording medium. For regularly refreshing the ink presented to the printhead, the carrier is advanced longitudinally, suitably at a rate selected to bring successive repeats of its aperture pattern into alignment with the printhead for the printing of successive lines of the image.

REFERENCES:
patent: 3247825 (1966-04-01), Johnson
patent: 4263601 (1981-04-01), Nishimura et al.
patent: 4308547 (1981-12-01), Lovelady et al.
patent: 4630075 (1986-12-01), Hori
Krause, K. A., "Focusing Ink Jet Head", IBM Technical Disclosure Bulletin, vol. 16, No. 4, Sep. 1973.
Quate, Calvin F., "The Acoustic Microscope", Scientific American, vol. 241, No. 4, Oct. 1979, pp. 62-70.
Quate, Calvin F., "Acoustic Microscopy", American Institure of Physics, Physics Today, Aug. 1985, pp. 34-42.

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