Abstract:
An improved ink system for a single pan design of a rotogravure printing press includes: the reservoir enclosing a substantial portion of the gravure cylinder; the intake section bottom having a slope at the bottom of the intake section; an intake port through the bottom of the intake section; an outtake port through the bottom of the outtake section; the outtake section bottom having a slope at the bottom of the outtake section sloping toward the outtake port; a dam release lever connected to the gate and extending outside of the reservoir, a plurality of channels through the vortex promoter; a pre-wipe bar located between the doctor blade and the vortex promoter; journal port seals located on each side of the gravure cylinder; and an angled doctor blade holder.
Abstract:
A contact pressure adjusting apparatus for a printing press, which can adjust a contact pressure automatically and always highly accurately without the influence of mechanical oscillations (disturbance such as noise), is provided. For this purpose, the contact pressure (load) of a wiping roll (20) on an intaglio cylinder (17) is converted into the torque value (electric current value) of a wiping roll drive motor (40) , and given as feedback to a wiping roll contact pressure adjusting motor (30).