Abstract: A container inspection apparatus for inspecting coating integrity includes an electrical control system that produces an output signal representative of the reflectivity of an inner surface of the container which is fed to a microprocessor and is compared with lower and upper limit references. If the output signal is outside the limit references, an ejector mechanism located in a path for moving containers is activated to remove the defective container from the path. The ejector mechanism includes flipper rods pivoted at one end and located in an inclined portion of the path so that the defective containers are removed by gravity feed.

Abstract: A color monitoring device includes a mechanism for removing containers from a path and accurately positioning a preselected area with a color monitor. The color monitor produces an output signal representative of the area being monitored which is amplified and fed to a computer where it is compared with reference signals. If the output signal is outside prescribed limits, the container is rejected, and if it is within prescribed limits, the container is returned to the path. A shuttle mechanism is activated by the computer and automatically removes a container from the path while returning a previously inspected container to the path. Stepper motors are used to vertically and horizontally position a selected point in front of the colorimeter.