| 摘要 |
<p>Plate (A) useful for printing in humid offset, comprises a encrophilic surfaces on its surface corresponding to patterns to print, where at least one part of the encrophilic surfaces is lightened that is (A) containing small non encrophilic surface (I) of lightening in which a part of the lightened encrophilic surfaces is distributed in at least two groups. Plate (A) useful for printing in humid offset, comprises a encrophilic surfaces on its surface corresponding to patterns to print, where at least one part of the encrophilic surfaces is lightened that is (A) containing small non encrophilic surface (I) of lightening in which a part of the lightened encrophilic surfaces is distributed in at least two groups in which a first group of (I) has a sufficient area for its effectiveness and sufficient quantity to reduce at least 4% of the encrophilic surface concerned to lightening; and a second group of (I), which is inefficient by their too small area and the average area of (I) of the second group is generally lesser than 2/3 of the average area of (I) of the first group. Independent claims are also included for: (1) the preparation of (A); and (2) procedure of printing in humid condition comprising generating a copy of the coating to the encrophilic surfaces (which corresponds to patterns to print comprising small non-encrophilic surfaces of lightening), fixing the copied coating to a cylindrical coating-holder, moisturizing and inking the fixed copied coating or directly inking the fixed copied coating with an ink which is mixed with a base (ink/water), successively transferring the held ink on the lightening encrophilic surfaces and straining the material to be printed.</p> |
