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:
Mar. 07, 2000
Filed:
Nov. 20, 1996
Tsutomu Miura, Yokohama, JP;
Eastman Kodak Company, Rochester, NY (US);
Abstract
A sheet transport apparatus capable of applying a predetermined force for transporting any kind of paper, including a sheet of thin paper, without forming transport wrinkles in the paper caused by a nipping pressure. The apparatus includes a hard roller 114 and a soft roller 112 for nipping a sheet of paper 10 therebetween. The soft roller is driven to transport the sheet using a frictional force generated from the nipping pressure applied by the soft and hard rollers. The hard roller is in a barrel-shape having a predetermined radial curvature 'R', such that the nipping pressure decreases gradually along its axis from the center toward the periphery of a nipping face between two rollers. This causes a compressive stress against the sheet to shift smoothly from a portion of the sheet nipped by the soft and hard rollers to a portion free from the nipping pressure. Thus, the formation of transport wrinkles in the sheet can be prevented.