The design of electric eye in flexible packaging（2）
The cursor generally chooses to have a large comparison with the background color, it is best to use black. Normally yellow or red cannot be chosen as the cursor color, what's more, cursor color is not supposed to be the same as that of the photoelectric eye. For example, if the photoelectric light is green, then the cursor color of the electric eye must not be green, because the green photoelectric eye is not able to identify the green color cursor. If the background color is a darker color (such as black, dark blue, deep purple, etc.), the cursor color should be designed to be a light-colored one with hollow white pad.
For pouch making machine, there is a microcomputer control system with fixed length electric eye tracking system. It can choose the photoelectric eye signal within a certain range of position to be effective, and the text and pattern outside this range can be ignored, so you may choose not to design the cursor. But make sure not to use too small and short text or pattern as a tracking point, if there's no suitable tracking point to be found then designing the cursor is a must.
