Apparatus for preparing smears of biological liquids

Details Apparatus for preparing smears of biological liquids Apparatus for preparing smears of biological liquids

1974-11-04

1976-11-16

McIntosh, John P.

Coating apparatus

With vacuum or fluid pressure chamber

118257, B05C 114

Patent

active

039917053

ABSTRACT:
Apparatus and method for preparing a smear of a biological fluid substance on a substrate, utilizing a ribbon having relatively small openings in at least one surface thereof which openings are of substantially uniform size and are arranged substantially uniformly both longitudinally and transversely of the ribbon throughout at least a portion of the ribbon. The method includes the steps of supporting the substrate for movement and supporting the ribbon by a support in close proximity to the substrate at a substance-applying station, for a run of the ribbon past a portion of the substrate. Further steps include introducing a relatively small quantity of the aforementioned substance between the aforementioned ribbon surface portion and the substrate at the substance-applying station to spread by capillarity in a direction transversely of the ribbon, and moving the substrate in a direction to smear the substance on the substrate.

REFERENCES:
patent: 1153585 (1915-09-01), Vicars et al.
patent: 1306649 (1919-06-01), Weinheim
patent: 2402269 (1946-06-01), Alexander et al.
patent: 3244139 (1966-04-01), Brown et al.
patent: 3418053 (1968-12-01), Pelavin
patent: 3493447 (1970-02-01), Rock
patent: 3526536 (1970-09-01), Spengos et al.
patent: 3701337 (1972-10-01), Borelli et al.
patent: 3716019 (1973-02-01), Carter et al.

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