Our next two-day product school is Thursday August 3, 2017 through Friday August 4, 2017. The training will be at our headquarters in Rocklin, CA (near Sacramento).

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     With the recent advancements in single board PCs, having a powerful computing device is now easier and more cost-effective than ever. The Raspberry Pi Foundation and its Raspberry Pi model, in particular, have set the stage for this new form of computer. This low-cost platform invites the question,” what is its role in the automation industry?” In this webinar, we will discuss where the Raspberry Pi fits in and how it can be used with Galil’s high-performance controllers and PLCs.

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Part 2 of 3: Positional Correction on Color Print Rollers in Offset Printing

Introduction

       This is the second of three advanced electronic gearing topics discussed in this series of papers. The first paper covered tension control on a spindle, while the third will cover writing on a moving conveyor system. To view Part 1 click HERE.

Definition

      This topic covers positional corrections of geared color print rollers on a web style, offset printing machine.  Figure 1 shows material being pulled through three printing rollers, each a different color.  The second and third rollers are geared to the first with a 1:1 ratio.  Each roller must be properly aligned so that as the material is pulled through, the printed colors line up.  In a perfect world, this can be calculated knowing the distance in-between rollers and the radius of the rollers.

Figure 1: Web printing diagram