No-Plotting Areas Around Register Marks

Do not plot data around register marks. The mark origins may be identified incorrectly, or the machine may fail to detect the register marks.

Register mark shape: Type 1

No-Plotting areas figure 1

Register mark shape: Type 2

No-Plotting areas figure 2

Mark Origin Mis-detection Example

  • If register marks are plotted in the no-plotting area as shown in the figure below, the line may be incorrectly identified as a register mark.
Register mark mis-detection figure