Radiation imagery chemistry: process – composition – or product th – Post imaging processing – Physical developing
Patent
1983-06-20
1985-10-08
Mathews, A. A.
Radiation imagery chemistry: process, composition, or product th
Post imaging processing
Physical developing
354 21, 354 86, 430209, 430498, G03D 902
Patent
active
045456631
ABSTRACT:
An integral, self-developing film unit and processor in which all structural components of the film unit apart from a rupturable pod of processing fluid are provided by two superposed rectangular sheets of plastic material. The sheets sandwich one or more layers of photochemical composition, support the processing fluid pod at the leading edge thereof and define at the trailing edge of the unit, a trap for receiving residual processing fluid. The trap is provided by a flap at the end of one of the two sheets folded over the trailing edge of the other sheet. The absence of edge rails to establish the thickness of processing fluid spread into contact with the photochemicals between the sheets is accounted for by a controlled spacing gap at the pressure nip through which the unit is advanced for processing after exposure. Preferably, the film units are employed with a roller processor having a large diameter roller with a trap relieving recess therein designed for mating with the film unit to relieve roller pressure thereon, upon a single revolution of the roller.
REFERENCES:
patent: 2500422 (1950-03-01), Land
patent: 2627460 (1953-02-01), Land
patent: 2686716 (1954-08-01), Land
patent: 3335652 (1967-08-01), Erikson
patent: 3607285 (1971-09-01), Chen
patent: 3619193 (1971-11-01), Knight
patent: 3621768 (1971-11-01), Chen
patent: 3625129 (1971-12-01), Van Allen
patent: 3751256 (1973-08-01), Harvey
patent: 3761268 (1973-09-01), Land et al.
patent: 3788205 (1974-01-01), Pasieka et al.
patent: 3816128 (1974-06-01), Chen
patent: 3848985 (1974-11-01), Bennett
patent: 3882518 (1975-05-01), Douglas
patent: 4017879 (1977-04-01), Lermann et al.
patent: 4020498 (1977-04-01), Friedman
patent: 4092167 (1978-05-01), Bushey et al.
patent: 4121230 (1978-10-01), Ohmura et al.
patent: 4247626 (1981-01-01), Poshkus et al.
patent: 4289840 (1981-09-01), Sylvester
patent: 4338008 (1982-07-01), Pizzuti
patent: 4356248 (1982-10-01), McCole
patent: 4360260 (1982-11-01), Eloranta et al.
Mathews A. A.
Polaroid Corporation
Thornton David R.
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