Inking device having space enclosed by rollers for containing ink particles

An inking device comprising:

• an inking unit feeding ink through an ink surface;
• a first roller rotatably arranged with an outer surface passing opposite said inking unit at a first position, said outer surface of said first roller being spaced from said ink surface, said inking unit filling a space between said ink surface and said outer surface of said first roller with the ink;
• a second roller rotatably arranged with an outer surface in contact with said first roller at a second position, said second position being downstream of said first position in a rotation direction of said first roller, said first roller moving substantially all the ink from said linking unit on said outer surface of said first roller to said second position;
• a third roller rotatably arranged with an outer surface in contact with said first roller at a third position, said third position being downstream of said second position in said rotational direction of said first roller;
• a fourth roller rotatably arranged with an outer surface in contact with said second and third rollers to define a closed area with said first, second and third rollers.

An inking device comprising:

• an inking unit feeding an amount of ink to cover an image to be printed;
• a first roller rotatably arranged with an outer surface passing opposite said inking unit at a first position;
• a second roller rotatably arranged with an outer surface in contact with said first roller at a second position, said second position being downstream of said first position in a rotational direction of said first roller;
• a third roller rotatably arranged with an outer surface in contact with said first roller at a third position, said third position being downstream of said second position in said rotational direction of said first roller;
• a fourth roller rotatably arranged with an outer surface in contact with said second and third rollers to define a closed area with said first, second and third rollers;
• a downstream roller rotatably arranged with an outer surface in contact with said second roller, said downstream roller receiving ink from said from said inking unit exclusively through contact with said second roller.