Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1991-01-04
1992-01-28
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250340, 250341, G01N 2159
Patent
active
050846205
ABSTRACT:
A method of detecting pre-spotting is described, comprising meauring the amount of IR light transmitted through a slide test element, using an IR-emitting diode and a photosensitive transistor or photodiode. The amount of transmission is compared against a standard level up until the time when sample dispensing is to commence.
REFERENCES:
patent: 4006358 (1977-02-01), Howarth
patent: 4243883 (1981-01-01), Schwarzmann
patent: 4420566 (1983-12-01), Jessop et al.
patent: 4492868 (1985-01-01), Jelvestam et al.
patent: 4808824 (1989-02-01), Sinnar
patent: 4879471 (1989-11-01), Dahlquist
Eastman Kodak Company
Hannaher Constantine
Schmidt Dana M.
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