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1. 发明申请

WO2003006243A1 SCREEN PRINTING APPARATUS 审中-公开
标题翻译：丝印印刷机
公开(公告)号：WO2003006243A1
公开(公告)日：2003-01-23
申请号：PCT/GB2002/003175
申请日：2002-07-10
申请人： DEK INTERNATIONAL GMBH , MCEVOY, Ian, Patrick , SQUIBB, Frank, Norman
发明人： MCEVOY, Ian, Patrick , SQUIBB, Frank, Norman
IPC分类号： B41F15/08
CPC分类号： B41F15/0818 , B41F15/26 , B41P2215/114 , H05K3/1216
摘要： A screen printing apparatus for and method of printing deposits of material onto a workpiece (3), the apparatus comprising: an inspection station (1) for determining a positional relationship of features on upper and lower surfaces of the workpiece, the inspection station comprising: an imaging system for determining a positional relationship of features on upper and lower surfaces of the workpiece, the imaging system comprising at least two spaced imaging units (15, 17) for imaging features on an upper surface of the workpiece, at least two spaced imaging units (19, 21) for imaging features on a lower surface of the workpiece, and a processing unit for determining a positional relationship of the imaged features on the upper and lower surfaces of the workpiece ; and a printing station (5) for printing deposits of material onto the workpiece, the printing station comprising: a workpiece support assembly (41) comprising a workpiece support member (43) for supporting the workpiece at a printing zone; a printing screen (5) disposed above the workpiece support member; a transport mechanism (27) for transporting the workpiece to the printing zone; and an alignment system for aligning the upper surface of the supported workpiece and the printing screen in relation to one another, the alignment system comprising at least two spaced workpiece imaging units (49, 51) for imaging features on a lower surface of the workpiece, and an alignment stage for moving the workpiece support member and the printing screen in relation to one another such as to align the upper surface of the workpiece and the printing screen in relation to one another by reference to positions of the imaged features on the lower surface of the workpiece as imaged at the printing zone and the positional relationship of the imaged features on the upper and lower surfaces of the workpiece as determined at the inspection zone.
摘要翻译：一种用于将材料沉积物印刷到工件（3）上的丝网印刷设备和方法，所述设备包括：检查台（1），用于确定工件的上表面和下表面上的特征的位置关系，所述检查站包括：用于确定所述工件的上表面和下表面上的特征的位置关系的成像系统，所述成像系统包括用于对所述工件的上表面上的特征进行成像的至少两个间隔开的成像单元（15,17），至少两个间隔成像用于在工件的下表面上成像特征的单元（19,21），以及用于确定工件的上表面和下表面上的成像特征的位置关系的处理单元; 以及用于将材料沉积到所述工件上的印刷站（5），所述印刷站包括：工件支撑组件（41），其包括用于在印刷区域处支撑所述工件的工件支撑构件（43）设置在所述工件支撑构件上方的印刷丝网; 用于将工件运送到打印区的传送机构（27）; 以及对准系统，用于相对于彼此对准所支撑的工件的上表面和所述印刷屏幕，所述对准系统包括用于对所述工件的下表面上的特征进行成像的至少两个间隔开的工件成像单元（49,51）以及用于相对于彼此移动工件支撑构件和印刷屏幕的对准台，以便通过参考下表面上的成像特征的位置来相对于彼此相对地对准工件和印刷屏幕的上表面在打印区域成像的工件以及在检查区域确定的在工件的上表面和下表面上的成像特征的位置关系。

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