Inspection can occur during or after the manufacturing process.
Its entire 360 surface was captured and a small portion was selected for the image below. The objective of the inspection is to identify the presence and location of defects in the six-color lithographic printing. Each pixel corresponds to a 0.00143 inch across the circumference and 0.00275 inch along the circumference of the can. Only one image is required to inspect the total surface of the cylinder. The image shown above was JPEG compressed to 499 Kbytes in file size.