Precise, Fast and Clean nip width measurements
The roller nip is critical in offset printing, both transporting and processing the ink and fountain solution. Offset technology is unique in that its process com- ponents – ink and water – are mixed under pressure.
The ink stripe – indicating the visual imprint when two rollers are in contact – varies according to type and amount of ink as well as in terms of viscosity, tack and yield value.
Analyzing an ink stripe is not always easy or accu- rate, due to its indistinct edge. Pressmen sometimes estimate from the outside of the stripe, sometimes from the inside.
The Nip Width Indicator employs a different approach, measuring the nip width from the momentactual nip pressure is applied until it ceases. Main- taining a true, process-correct nip width at a con- stant level ensures the greater stability of the overall offset process.
The Nip Width Indicator – a high-technology digital instrument – measures nip width based on the true roller pressure contact.
Simple to Use
1. Position the tip of the sensor blade between the rollers
2. The display shows readings in millimeters or inches 3. Adjust the nip width to desired level
Measurements should be taken at both ends of the roller nip and in the center. Measurement and roller settings will always be the same – whoever performs the task.
No ink is needed, so no cleaning is necessary after measurements are completed. However,
if you need to troubleshoot while in production mode, measurements can be taken even with ink on the rollers.