Photographic roll film

Details Photographic roll film Photographic roll film

2000-01-13

2000-12-19

Huff, Mark F.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Structurally defined

G03C 300

Patent

active

061625949

ABSTRACT:
A photographic roll film such as Brownie film is placed on a backing paper or a leader paper. The roll film is joined at its one or both ends to the backing paper or leader paper with a jointing tape, which has on its surface a bar code composed of light absorbing bars and light reflecting spaces. The light absorbing bars show a reflectance of less than 30% and a glossiness of less than 20%, and the light reflecting spaces show a reflectance of more than 50% and a glossiness of less than 35%. Further, the total of the glossiness of light absorbing bars and the glossiness of light reflecting spaces is less than 50%. The reflectance and glossiness both are determined utilizing a light in a wavelength region other than a light sensitive wavelength region of the roll film.

REFERENCES:
patent: 5258789 (1993-11-01), Labaziewicz
patent: 5934592 (1999-08-01), Makino
patent: 6022678 (2000-02-01), Makino

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