US 5,176,078 A · Screen printing machine

Abstract

A screen printing machine comprises a conveyor for conveying a substrate to a positioning station, an XY.theta. table on which the substrate is to be put, and a printing device for printing a pattern onto the substrate in a printing station. The XY.theta. table is movable in an XY.theta. plane in the positioning station and also movable along a Z-direction perpendicular to the XY.theta. plane. The machine further comprises a device for moving the printing device between the printing station and a waiting station, an image processing device and a driving device for the XY.theta. table. The image processing device recognizes a position of the substrate and calculates the respective amount of movement of the XY.theta. table in the XY.theta. plane necessary for making the predetermined relative positional relation between the printing device and the substrate. The driving device moves the XY.theta. table, based on the amounts of movement calculated by the image processing device.

Claims9

Dependent claims

A screen printing machine comprising:

a positioning station;
a printing station;
a waiting station;
means for conveying a substrate to said positioning station;
an XY.theta. table means on which said substrate is to be put, movable in a plane in said positioning station as well as movable along a Z-direction perpendicular to said plane;
printing means for printing a pattern onto said substrate in said printing station;
means for moving said printing means between said waiting station and said printing station;
image processing means serving to recognize the position of said substrate from an image thereof obtained by monitoring said substrate in said positioning station using a camera and to calculate, based on the recognized position of said substrate, the respective amount of movement of said XY.theta. table means in said plane necessary for making the predetermined relative positional relation between said printing means and said substrate;
and
means for moving said XY.theta. table means based on the amounts of movement calculated by said image processing means.

7 more elements

Dependencies are inferred from the claim text.

Screen printing machine

Life of this patent

Screen printing machine

Life of this patent

Abstract

Claims9