公开(公告)号：US5292565A

公开(公告)日：1994-03-08

申请号：US712125

申请日：1991-06-07

申请人： Lisa A. Napier ,  Stephanie S. Hinton ,  Sherron F. Stanton

发明人： Lisa A. Napier ,  Stephanie S. Hinton ,  Sherron F. Stanton

IPC分类号： B41F31/26 ,  B41L27/28 ,  B41N7/06 ,  B41K1/42

CPC分类号： B41F31/26 ,  B41L27/28 ,  B41N7/06 ,  B41N2207/02 ,  B41N2207/14 ,  Y10T428/1376 ,  Y10T428/139 ,  Y10T428/24496 ,  Y10T428/24893 ,  Y10T428/249978 ,  Y10T428/249983 ,  Y10T428/249986 ,  Y10T428/249996 ,  Y10T428/254

摘要： An ink roll made of a microporous thermoplastic structure impregnated with an ink has sufficient strength, toughness and flexibility to deliver ink to a transfer roll without substantial misting of the ink from the ink roll surface as the ink roll is driven by a drive roll at peripheral speeds of 200 ips or more. The microporous plastic structure of the roll may be formed from a blend of a first polymer having particles sizes in the range of 1 to 100 .mu.m, and a second polymer having particles sizes from more than 100 .mu.m to 600 .mu.m. The second polymer is selected to impart greater strength and abrasion resistance to the roll than the first polymer. Both of the first and second polymers may be copolymers of PVC and polyvinyl acetate. The second copolymer has more acetate groups than the first polymer, giving it significantly greater strength.

摘要翻译： 由浸渍有油墨的微孔热塑性结构制成的油墨卷具有足够的强度，韧性和柔性，以便将油墨输送到转印辊上，而不会因油墨辊被墨辊表面驱动而使油墨从墨辊表面上实质上雾化 速度为200 ips以上。 辊的微孔塑料结构可以由具有1至100（μm）m范围内的粒度的第一聚合物的共混物和具有大于100（my）m至600（μm）的颗粒尺寸的第二聚合物的共混物形成 我的） 选择第二聚合物以赋予辊比第一聚合物更大的强度和耐磨性。 第一和第二聚合物都可以是PVC和聚乙酸乙烯酯的共聚物。 第二种共聚物比第一种聚合物具有更多的乙酸酯基，赋予它显着更大的强度。