The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 20, 1986
Filed:
Dec. 24, 1984
Philip R Norris, North Reading, MA (US);
Vincent L Cocco, Wakefield, MA (US);
Polaroid Corporation, Cambridge, MA (US);
Abstract
Film processing apparatus is provided for uniformly spreading processing fluid on a surface of a sheet of photosensitive material with an applicator pad in the form of a length of absorbent web material impregnated with processing liquid and wrapped on a pair of rollers with each end thereof being attached to a respective one of the rollers forming the roller pair. The applicator material is wrapped on both of the rollers with the applicator material and the roller pair being enclosed in a liquid-tight housing having a self-sealing opening therein for the passage of photosensitive sheet material therethrough. An exposed sheet of photosensitive material is transported from a light-tight cassette through the self-sealing housing opening and into the bite between wrapped and unwrapped applicator pad surfaces. A drive motor drives the pair of rollers such that in one direction the entire photosensitive sheet is drawn in between adjacent layers of wrapped applicator material where it imbibes processing liquid from the applicator pad for a predetermined period of time. Upon completion of the imbibition, the rollers are then driven in the opposite direction until the imbibed sheet is driven out of the processing apparatus by the drive motor through the self-sealing housing opening.