Inking apparatus and side plate thereof

An inking apparatus comprising:

• an ink fountain roller;
• an ink fountain blade, which a front end thereof is position-adjustable to be located close to the outer circumference of said ink fountain roller;
• a pair of side plates, each standing upright from said ink fountain blade so that an arcuate front end surface encircles part of the outer circumference of said ink fountain roller to form an ink fountain for storing ink in cooperation with said ink fountain roller and said ink fountain blade;
• a permanent magnet being embedded in a bottom surface of each said side plate in contact with said ink fountain blade for fixing said side plate to a desired position of said ink fountain blade so that said pair of side plates are movable relative to said ink fountain blade along an axis of said ink fountain roller;
• a recessed pocket being formed on the front end surface of each side plate;
• and
• another permanent magnet being embedded within the recessed pocket of each side plate so that the front end surface of each said side plate is held in tight contact with the outer circumference of the ink fountain roller and so that an end surface of the permanent magnet within the recessed pocket is located inner that of the arcuate front end surface of each said side plate, each recessed pocket at least partially bounding an open area directly adjacent to the ink fountain roller when the front end surface of each side plate is biased against the ink fountain roller.