Image Functions

3.3.2IPC mode (Auto II mode)

[A.4.7 SET WINDOW command/DTC SELECTION = X’00’ or X’80’]

In this mode, the algorithm of dynamic threshold is deferent between IPC-2D and IPC-3D. This mode is recommended for general electric filing purpose.

Option

Algorithm of the Dynamic Threshold

Condition

 

 

 

IPC-2D:

Simplified Dynamic Threshold

Anytime

 

 

 

IPC-3D:

Simplified Dynamic Threshold

When Image Emphasis is not

 

 

specified

 

 

 

 

IPC-2 like Simplified Dynamic

When Image Emphasis is

 

Threshold

specified

 

 

 

a)Simplified Dynamic Threshold

The Simplified Dynamic Threshold is effective to obtain sharp images or capture texts having colored backgrounds. This effect is similar to Image Emphasis. The difference is that the Simplified Dynamic Threshold does not emphasis the background. This is useful for forms, checks and most real world document.

In IPC mode, Simplified Dynamic Threshold was a simplified implementation of the Dynamic threshold. In IPC-2D, Simplified Dynamic Threshold is no simpler, but sometimes more effective than Dynamic Threshold for background texts. In IPC-3D, both Dynamic Threshold are the same and sophisticated.

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