Title: Self-developing film pack with improved spread control structure

Abstract: A film pack, for use in a self-developing camera, including a film container having improved processing fluid spread control structure embodied in an extended forward wall portion of the container adjacent a film withdrawal slot to locate a spread control surface thereon in closer relation to a pair of pressure rollers in the camera. Although the forward wall is extended, the longitudinal dimension of the container, near its rear wall, has been maintained so that the improved pack will fit existing cameras. Also, the leading end wall of the container has been angled or sloped to improve the upward feed of film units toward an exposure position in the container. An alternative embodiment is disclosed.

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Inventors: Gervais, Theodore (Burlington, MA, US)
McCole, Thomas P. (South Natick, MA, US)

Application Number: 026200
Filing Date: 1979-04-02
Publication_date: 1980-10-07
Assignee: Polaroid Corporation (Cambridge, MA)
Primary Class(es): 396/366 396/33, 396/517, 396/583, 430/499
Other Classes:
US Patent Ref:

Re29756	Sep, 1978	Gold	354/85.
3714879	Feb, 1973	Land et al.	354/83.
3750551	Aug, 1973	Land et al.	354/83.
3779770	Dec, 1973	Alston et al.	96/76.
3832731	Aug, 1974	Kinsman	96/76.
3948662	Apr, 1976	Alston et al.	96/63.
3979762	Sep, 1976	Hendry et al.	354/86.
4005446	Jan, 1977	Friedman	354/304.
4016582	Apr, 1977	Wareham	354/83.
4052728	Oct, 1977	Hendry et al.	354/86.
4134655	Jan, 1979	Friedman	354/86.

Other Refs:
Primary Examiner: Griffin, Donald A.
Assistant Examiner:
Attorney: Vale; John S.