Abstract
The HP Indigo 7000 Digital Press incorporates many innovative breakthroughs in its liquid electrophotographic engine and other sub-systems to enable it to reach a 2.15m/s process speed, 76% higher than that of the previous generation Indigo presses. Significant changes include the use of a charge roller in place of scorotrons to charge the photoconductor and an external blanket heating system to prepare the marking ink for transfer to paper. Other improvements, such as a higher-throughput writing head and more precise and capable mechanical assemblies, also play large roles in enabling the increased performance. In this paper we discuss the general advances in the HP Indigo 7000 and some of its new subsystems in much more detail. These together enable the press to greatly increase productivity without compromise to the Indigo “offset look and feel” quality.
