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:
Aug. 02, 1983
Filed:
Feb. 18, 1982
Applicant:
Inventors:
John A Wedel, Mendota Heights, MN (US);
Robert L Skubic, Bloomington, MN (US);
Assignee:
Pako Corporation, Minneapolis, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
A47L / ;
U.S. Cl.
CPC ...
15303 ; 1530 / ; 1531 / ; 355 30 ;
Abstract
A film cleaning apparatus cleans photographic film while the film is clamped at the print gate aperture of a photographic printer. When the film is clamped at the print gate, and before a print exposure is initiated, high velocity ionized air is directed onto both the top and bottom surfaces of the film to remove dust and other foreign materials from the film surfaces. When the exposure is commenced, the flow of ionized air is reduced to a low velocity which is sufficient to prevent dust from settling on the film surfaces during exposure.