EXact X-Rite User's Guide download pdf (Page 35)

X-Rite eXact™ Instrument

MEASUREMENT FUNCTIONS

Density

This function is the measure of the ink thickness. For the process colors Cyan, Yellow, Magenta,

or Black the desired Density Status (A, E, I, T, G) needs to be configured. For spot Ink’s the

results is given as the density value at the wavelength of maximum density for the spectral curve.

This function can be optionally configured to subtract the white base/substrate. For Basic, Search

and Compare tools, you can configure which color responses are shown. Auto color picks the

dominant process color response (C, M, Y, or K). Spot color picks the dominant spectral density

wavelength. You can manually select the color response as well (C, M, Y, K, or all four CMYK). In

Job tools, the color response shown depends on the particular patch measured.

When a standard is present, delta Density values are shown. If the color filter setting is Auto or

Spot, then the color response of the standard is shown.

Density Measurement

Displays density values for the selected function and color.

1. Select Density, Density Trend, or All Densities.

2. Measure paper if required.

3. Select color.

4. Measure sample.

5. View data.

Density Trend

This function displays a bar graph of the density values of up to the last ten readings taken

towards a particular density color response. A delta button is available in certain tools to allow

you to switch between viewing the absolute/delta density per reading. An overall average for that

particular density color response is shown at the top for all readings taken in the trend graph

(even if more than 10 readings are taken).

Basic Tool: Measurements are only added when a sample is taken directly in this function. It will

track each different density response separately, so if you measure 2 cyan samples, then a

magenta sample, then measure Cyan again, the graph will show 3 readings for the cyan

response. The readings for the trend graph are not cleared out until you exit the Basic tool you

are currently using. There is no delta mode for Basic tool since there are no standards for

comparing.

Analyze & Compare Tools: The Trend graph will keep track of readings until a new standard is

changed, at which time it will clear out the trend graph. All readings will be shown on the graph

regardless of what Density Color Response is selected, as all the readings are assumed to be

made against the same patch (same standard). Like the Basic tool, readings will only be added to

the trend graph if it’s the current function on screen.

Density value

Simulated color and timestamp of

reading displayed

Function, response, and

Measurement Condition

selected

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 103 104

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EXact X-Rite User's Guide Page 35