摘要:
A printing system is disclosed including an inking system with a single form roller (15) for applying ink to a printing cylinder (12). Ink is applied to the form roller by an applicator roller (40) having a surface with (15) an array of interconnected wells and a variable speed drive. The form roller (15) and plate cylinder (12) are rotated at the same rpm while the speed of the applicator roller (40) is varied to vary the amount of ink applied to the plate (14). A variable speed subtractive roller system removes excess ink from the form roller (15) and returns the ink to a common reservoir (50). For wash-up, the press drive and form roller (40) are disengaged and the inking system is rotated by an inker roller drive while wash-up fluid is applied to the inking system.
摘要:
Keyless inking systems and methods are disclosed which employs a main form roller (202) and a smaller clean-up roller (206), both in contact with a rotating print plate roller (204). Separate application and subtractive roller systems control the ink film on the form roller (202). The clean-up roller (206) removes residual ink from non-image areas on the printing plate roller (204). The clean-up roller (206) is in ink communication with the main form roller (202) through a vibrating roller (208). Mechanisms are provided to selectively engage and disengage the various rollers.