Method of printing on workpieces of differing thicknesses

Details Method of printing on workpieces of differing thicknesses Method of printing on workpieces of differing thicknesses

1992-10-06

1993-08-24

Fisher, J. Reed

Printing

Processes

Condition responsive

101316, B41F 154

Patent

active

052379248

ABSTRACT:
In a marking method and apparatus which uses relief-plate printing, the distance between printing plate and surface of a workpiece is calculated based upon a rotational position of a vertical direction driving motor before the lowering of the printing plate and a rotational position of the vertical direction driving motor at the time the printing plate comes into contact with the workpiece and signal is accordingly generated by a detector. Thus, the distance between the printing plate and the surface of the workpiece can be easily calculated, and even if the workpieces are not the same in thickness, the amount the plate holder is lowered can be set easily and in a short period of time.

REFERENCES:
patent: 4029010 (1977-06-01), Deisting
patent: 4493253 (1985-01-01), Vyas
patent: 4652153 (1987-03-01), Kotsuzumi
patent: 4949098 (1990-08-01), Gluck et al.

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