Patent ID: 8256886

Claim:
An aluminum drum for an ink jet marking system comprising: a surface texture having an average surface roughness ranging from about 0.05 microns to about 0.7 microns, and a bearing area ranging from about 2% to about 100% at a cut depth ranging from about 0.1 microns to about 1 micron; wherein a relationship between the bearing area and the cut depth is selected from one or more sets comprising: the bearing area ranging from about 7% to about 46% at the cut depth ranging from about 0.1 microns to about 0.2 microns; the bearing area ranging from about 18% to about 74% at the cut depth ranging from about 0.2 microns to about 0.3 microns; the bearing area ranging from about 32% to about 82% at the cut depth ranging from about 0.3 microns to about 0.4 microns; the bearing area ranging from about 47% to about 86% at the cut depth ranging from about 0.4 microns to about 0.5 microns; the bearing area ranging from about 60% to about 89% at the cut depth ranging from about 0.5 microns to about 0.6 microns; and the bearing area ranging from about 70% to about 95% at the cut depth ranging from about 0.6 microns to about 0.7 microns.