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. 25, 1992
Filed:
Jan. 21, 1992
Sakurabayashi Akira, Shizuoka, JP;
Kobayashi Engineering Works, Ltd., Shizuoka, JP;
Abstract
The apparatus for straightening sheet curls of the present invention is operating in the following processes 1 and 2 when splicing the sheets from the parent rolls: 1 The wrap angle adjusting apparatus starts to return one of the main backup rolls and the decurler bar from the position corresponding to the small parent roll to the position corresponding to the large parent roll. 2 The apparatus for suddenly changing the wrap angle causes the other of the main backup rolls and the decurler bar to retract from the standard position at which the sheet is pushed inwardly to a position at which the sheet is not pushed inwardly or moderately so as to suddenly change the wrap angle of the sheet substantially at the same timing as the start of return above described in process 1. During this operation, the sheet is guided by the secondary backup rolls, and the wrap angle of the sheet is set to a value appropriate to the diameter of the second parent roll having a large diameter. As a result, the curls in the sheet wound off from the second parent roll having a large diameter are appropriately straightened (refer to FIG. 4(B)).