Drop-out Color

A drop-out color is color visible by a human eye but not visible to the scanner.

To check the grounding color of document for a drop-out color, use the method and follow the standards given below.

Print density measurement

The spectrum chart shows in Figure 6.5 is used to measure print density.

The measurement must be made in one of the following ways:

A light source using fluorescent G54

Macbeth PCS meter PCM II is used, which requires a filter.

Relative response

100

DOCUMENT

SPECIFICATION

50

400

450

500

550

600

650

700

750

 

 

 

λ (nm)

 

 

 

 

Figure 6.5 Spectrum band

Drop-out color standards

In the spectrum of fluorescent lamp G54, the PCS value must satisfy the following standards:

Maximum: 0.14 or less

Average: 0.1 or less

M3099GX/GH OEM Manual

6-7