Short inking system for a rotary printing machine

A method of using an inking system of a rotary printing press including:

• providing a screen roller having a screen roller diameter and circumference;
• providing said screen roller circumference having a screen roller resolution;
• providing printing ink of a viscosity of at least 9000 mPa.s to said screen roller;
• providing at least first and second inking rollers;
• having one of said first and second inking rollers acting as an ink application roller and having an ink application roller circumference;
• having the other of said first and second inking rollers acting as an ink smoothing cylinder contacting said ink applicator roller;
• providing a forme cylinder having a forme cylinder circumference;
• selecting said forme cylinder circumference as a whole number multiple of said ink application roller circumference;
• using said ink application roller for inking said forme cylinder;
• supporting one of said ink application roller and said ink smoothing cylinder for movement in an axial direction;
• moving said axially movable one of said ink application roller and said ink smoothing cylinder in a first axial movement direction during one printing movement of said forme cylinder;
• reversing said movement direction while said axially movable one of said ink application roller and said ink smoothing cylinder is aligned with a cylinder trough of a cooperating one of said ink forme cylinder and said other of said first and second inking rollers;
• providing at least one image on said forme cylinder and having an image resolution;
• and
• selecting said screen roller resolution and said forme cylinder resolution wherein a ratio of said screen roller resolution to said image resolution is greater than 0.5.

A short inking system of a rotary printing press comprising:

• a screen roller, said screen roller having a screen roller diameter and a screen roller circumference;
• at least a first ink application roller in contact with said screen roller, said at least first ink application roller having a first ink application roller circumference and a first ink application roller diameter;
• a forme cylinder which receives ink from said at least first ink application roller, said forme cylinder having a forme cylinder circumference;
• means for driving said at least first ink application roller for rotation independently of said forme cylinder and in synchronization with said forme cylinder;
• and
• means for supporting said at least first ink application roller for axial displacement and wherein a ratio of a circumferential displacement per angular unit of movement of said axially displaceable first ink application roller to an axial displacement per angular unit of movement of said axially displaceable first ink application roller is between 2.5 and 5.