| http://www.w3.org/ns/prov#value | - Although the film 112 is preferably formed on all portions to which ink adheres when it the tray 130 is put in the ink fountain 123 in the above-described embodiment, only the portions which are especially difficult to clean, for example, the insides of the concave grooves 132 c and 131 c in which the packing 138 is fitted and the vicinities thereof can be coated with the film 112 if desired.
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