US 5,768,990 A · Gapless tubular printing blanket

Abstract

A tubular printing blanket for a blanket cylinder in an offset printing press comprises a cylindrical sleeve, a compressible layer over the sleeve, and an inextensible layer over the compressible layer. The cylindrical sleeve is movable telescopically over a blanket cylinder. The compressible layer comprises a first seamless tubular body of elastomeric material containing compressible microspheres. The inextensible layer comprises a second seamless tubular body of elastomeric material containing a tubular sublayer of circumferentially inextensible material. A seamless tubular printing layer over the inextensible layer has a continuous, gapless cylindrical printing surface. Methods of manufacturing the tubular printing blanket are also disclosed.

Claims24

Dependent claims

A printing blanket comprising a cylindrical tubular body for mounting around a blanket cylinder, said cylindrical tubular body being gapless for rotational symmetry thereby minimizing vibration at high speeds said cylindrical tubular bodv comprising:

a cylindrical sleeve;
a gapless inner layer of compressible material disposed around the cylindrical sleeve, the cylindrical sleeve being operative for disposition around an outer surface of the blanket cylinder;
a gapless layer of inextensible material disposed around the inner layer of compressible material;
and
a gapless outer printing layer disposed around said layer of inextensible material, said outer printing layer being operative to print ink on paper.

2 more elements

Dependencies are inferred from the claim text.

Gapless tubular printing blanket

Life of this patent

Gapless tubular printing blanket

Life of this patent

Abstract

Claims24