Self-processing photographic film unit with dissolvable trap mem

Details Self-processing photographic film unit with dissolvable trap mem Self-processing photographic film unit with dissolvable trap mem

1984-12-28

1986-07-01

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Structurally defined

430209, 430216, G03C 300, G03C 539

Patent

active

045980411

ABSTRACT:
A self-processing photographic film unit includes a first sheet for recording a positive image, a transparent second sheet bonded to the first sheet in face-to-face relation, a container for a processing liquid coupled to the leading end of the film unit, and a trap coupled to the trailing end of the film unit. Following exposure of the film unit, the processing liquid is distributed uniformly between the sheets, and any excess of the processing liquid from an image-recording area of the first sheet is received in the trap. The trap comprises a bag-like trap cover having a plurality of air orifices and a trap member capable of swelling and solubilizing when in contact with the processing liquid, which is surrounded the trap cover. The trap member is made of a fibrous carboxymethylcellulose sheet or a fibrous carboxymethylcellulose sheet and filter paper bonded to each other by sandwiching a liquid impervious member therebetween. The trap member contains azelaic acid as a neutralization agent and a material discharging metal cations as a coagulation agent.

REFERENCES:
patent: 2686716 (1954-08-01), Land
patent: 2686717 (1954-08-01), Land
patent: 3615436 (1971-10-01), Campbell
patent: 3761269 (1973-09-01), Campbell
patent: 4042396 (1977-08-01), Sylvester

Affiliated with

Also associated with

Rating

Self-processing photographic film unit with dissolvable trap mem does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Self-processing photographic film unit with dissolvable trap mem, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-processing photographic film unit with dissolvable trap mem will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1082488