Ink jet sensor method and apparatus

Details Ink jet sensor method and apparatus Ink jet sensor method and apparatus

1981-10-26

1983-10-18

Griffin, Donald A.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346 75, G01D 1518

Patent

active

044108958

ABSTRACT:
In an ink jet printer, improved ink droplet sensing method and apparatus. The disclosed full width ink jet printer includes a number of ink jet nozzles which direct ink droplets to specific regions of a print plane. The present sensing technique insures ink drops from the multiple nozzles "stitch" together properly across the printing plane. Multiple sensing sites (two for each nozzle) are comprised of a light input optical fiber and two output fibers coupled to circuitry to monitor light intensity at the sensing site. The sensitivity of the site is enhanced by electroformed input and output masks which reduce the effective send and receive area of the optical fibers.

REFERENCES:
patent: 3737914 (1973-06-01), Hertz
patent: 3769627 (1973-10-01), Stone
patent: 4112469 (1978-09-01), Paranjpe et al.
patent: 4238804 (1980-12-01), Warren
patent: 4255754 (1981-03-01), Crean et al.

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