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Newspaper Colorbar Features
There's only one way to manage newspaper color effectively,
meet customer expectations, and maximize job profitability!
That is: Objective Color Measurement. In other words, densitometry.
Essentially this is a matter of reading a gray balance bar
for density-derived characteristics. The SD3 Scanning Densitometer
can use bar as narrow as 1/16" (1.6mm) bars for color
control. No other device on the market can do this.
Setting up a press is logical and uncomplicated. After keying
in job parameters (type of press/sheet size/colorbar structure),
position the colorbar between two horizontal scribelines
and against the side guide. The vacuum hold-down secures
sheet placement and the SD3 does the rest.
A typical scan takes only 10 seconds. As the SD3 scanning
head travels across the press sheet, it strokes the colorbar
VERTICALLY to determine bar position and skew. On the scanning
head's return trip, having detected the skew of the colorbar,
the head scans right down the middle of the bar for accurate
densitometric readings.
The SD3 has an accurately flat, rugged platen with vacuum hold-down. The design
supports the bridge and measuring probe head. Unique pass-through feature allows
the entire press sheet to slide freely under the bridge, enabling scans of
centrally located colorbars and bars at the bottom of the sheet.
Sampling a few sheets during the run provides an immediate comparison of performance
to specifications. And by charting long-term trends, the SD3 becomes an essential
quality assurance tool.
Statistical analysis of the entire job
file is performed by SPC software
that comes with the system. Color-coded
graphical displays show X-bar and range
data for each scan and/or each job.
A frequency histogram generated from
readings
charts the distribution.
The SD3 Scanning Densitometer system includes all the components needed for effective
color management. Its modular design allows for the convenient placement of
the components according to the layout of your pressroom.
- Reads most process colorbars as well as custom-made
colorbars and newspaper gray balance bars
- Measures bars that are placed on edge of sheet
as well as in the fold of a Tabloid Paper
- Built-in certified calibration plaque for automatic
calibration to Standard T-Ref or Status "E" values
- Customer can assign ink density "target
values" from either house densities or customer "OK"
- Allows for multiple unit networking capability
- Supports "closed loop operation" with many automatic
press consoles
- Generates complete sets of reports for quality control
departments
- Measures colorbars as narrow in height as 1/16” (1.6mm)
using patented "Seek & Find" software program
- Scans colorbars in less than 10 seconds
- One SD3 can serve multiple presses simultaneously
- Vacuum hold down and rugged construction built
for the pressroom
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