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:
Jun. 23, 1992
Filed:
Aug. 19, 1991
Masakazu Ohtorii, Hikone, JP;
Dainippon Screen Mfg. Co., , JP;
Abstract
Positional shifting of a photosensitive film due to poor winding-up and -off of an air-tight sheet is prevented without troublesome adjustments, whereby operationability of a contact printer is enhanced and improved. The air-tight sheet winding mechanism includes a connector frame fixed to a pair of carriages movable along each track rail disposed on both sides of a contact printer, and a roller holder for supporting a sheet roller. The connector frame is engaged with the roller holder by inserting micro bearings into oblong apertures. The roller holder and the sheet roller are engaged with the connector frame to slidably move in a direction B and swing about the micro bearing as shown by an arrow C. An air tight sheet is thus precisely and uniformly wound up and off according to its inherent properties including residual stress and residual strain.