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:
Dec. 04, 1990
Filed:
Nov. 24, 1989
Erik K Nelson, Centerville, OH (US);
The Mead Corporation, Dayton, OH (US);
Abstract
A two roll pressure developer for a microencapsulated web or medial material includes rolls which have a support shaft through the center, a hollow annular shell, and load-bearing elastomer material between the shaft and the shell supporting the shell and controlling the deflection of the shaft under development loads. The elastomer material is formed as a plurality of discrete annular segments with inside diameters mounted on the shaft and outer diameters mounted in the shell. The segments are distributed along the length of the shaft so as to provide the roll with a variable modulus of elasticity which is highest at the axial center of the shaft and lower at the ends. In one embodiment, the segments are identical in width and are varied in pitch or axial spacing. In another embodiment, the segments are spaced at the same pitch but are varied in axial thickness. In a third embodiment, the segments are of equal size and spacing and are formed with a modulus of elasticity which is greatest at the axial center of the roll, and progressively lower toward the roll ends.