Cylindrical white spots appear in printed graphics. Reasons: (1) The ink drying film is adhering to the ink on the printing plate blanket. (2) Paper powder, dust, and other foreign materials mixed with ink. Treatment method: (1) Do not mix the ink drying film with the ink when removing the ink from the tank. (2) Replace the paper. (3) Carefully clean ink fountains, rollers, blankets, and plates. (4) It was found that the ink was replaced when ink was present in the ink. Perfectly suited for smaller spaces like studio apartments and office, our Home Office Desk can quite easily be tucked into a corner. Though small in size, this piece offers some storage space with drawers. Our table is designed to give you plenty of leg room but also doesn't take up too much space in your home. Working Desk,Working Table,Standing Work Station,Adjustable Work Table Baklam , https://www.baklamjm.com
Source: "Printing Technology"
Common offset ink failure analysis - ring white spot phenomenon
Ten, ring white spot phenomenon