Isn’t it better to use a true color sensor rather than a color mark sensor?
Not always. A large number of color sensing applications can be done quite effectively by detecting a gray scale change in the color mark. In these instances, we recommend you use a color mark sensor like the R58E, especially in high-speed applications. A true color sensor is required when sorting out targets that differ only in color, for example, when you need to distinguish between light blue and dark blue. However, when distinguishing a registration mark on a constant background, a color mark sensor is your best choice.
