Patent ID: 9205640
Filing Date: 2015-12-08
Classification: B41F,H05K

Abstract:
1. A screen printing head for printing deposits of a print medium onto a workpiece through apertures in a printing screen, comprising: a support body for attachment to a screen printing machine; a support member comprising an elongate member; a printing blade attached to the support member, wherein the printing blade is a squeegee blade; and a vibration unit which couples the support member to the support body to provide for vibration of the support member, and hence the printing blade when attached thereto; wherein the vibration unit vibrates the support member at one or more frequencies in the range of from about 20 kHz to about 50 kHz and with a displacement of the support member of at least about 0.4 μm, such that the printing head provides a transfer efficiency of at least 75% through apertures having an area ratio of 0.4.