公开(公告)号：US4937097A

公开(公告)日：1990-06-26

申请号：US272594

申请日：1988-11-17

申请人： Shiro Ichinose ,  Kazuo Segawa ,  Kunio Katsuuma ,  Hideo Ohta

发明人： Shiro Ichinose ,  Kazuo Segawa ,  Kunio Katsuuma ,  Hideo Ohta

IPC分类号： B41F15/08 ,  B41F15/26 ,  B41F15/46 ,  H05K3/12

CPC分类号： B41F15/0818 ,  B41F15/26 ,  B41F15/46 ,  H05K3/1233 ,  H05K2203/0139 ,  H05K2203/1518 ,  H05K2203/1572

摘要： A screen printing apparatus and method for forming printed wiring on a board. The apparatus comprises a holder for holding the board upright in posiiton, and a printing device arranged vertically for at least one surface of the board as held in position by the holder, the printing device including a spatula-like squeegee, a screen, a first scraper in the form of a spatula for scraping ink from the front surface of the screen remote from the board and a second scraper in the form of a spatula for scraping ink from the rear surface of the screen adjacent the board, the first scraper and the second scraper being mechanically drivable at the same time to scrape the screen with the first scraper positioned below or above or at the same level as the second scraper, the squeegee being mechanically drivable for squeegeeing ink on the front surface of the screen after the first and second scrapers scrape the screen.

公开(公告)号：US4285274A

公开(公告)日：1981-08-25

申请号：US87382

申请日：1979-10-22

申请人： Kunio Katsuuma

发明人： Kunio Katsuuma

IPC分类号： B41C1/18 ,  B41C1/14 ,  B05C17/06 ,  B41L27/28

CPC分类号： B41C1/14

摘要： Disclosed is a seamless cylindrical printing screen having an improved aperture ratio and high strength, rigidity and durability sufficient to resist the rotary screen printing operation and being capable of providing high quality printed patterns with sharp and clear contours. This screen is composed of a meshed metal cylinder, in which said cylinder comprises a plurality of axial mother lines composed of a metal wire and extended from one open edge of the cylinder to the other open edge substantially in the axial direction at small intervals between every two adjacent axial mother lines, a circumferential mother line composed of a metal wire and extended spirally from one open edge of the cylinder to the other open edge at small intervals between every two adjacent turns of the circumferential mother line to cross said axial mother lines and a metal plating layer covering the peripheries of said circumferential and axial mother lines and bonding them to one another at the crossing points thereof.

摘要翻译： 公开了一种无缝圆筒形印刷丝网，其具有改善的开口率和高强度，刚性和耐久性，足以抵抗旋转丝网印刷操作，并且能够提供具有锐利和清晰轮廓的高质量印刷图案。 该屏幕由网状金属圆筒构成，其中所述圆柱体包括由金属线组成的多个轴向母线，并且从所述圆柱体的一个开口边缘延伸到基本上在轴向方向上的另一个开口边缘，每个小间隔在每个 两个相邻的轴向母线，由金属线组成的圆周母线，并且从圆柱体的一个开口边缘螺旋地延伸到另一个开口边缘，在周向母线的每两个相邻的匝之间以小的间隔横穿所述轴向母线， 覆盖所述周向和轴向母线的周边并在它们的交叉点将它们彼此粘合的金属镀层。