devices. Screens from this system are compatible with screens
generated from the Allegro system.
Ruling
Ranges from 40 to 240 lpi (The available values depend
on the output device.)
Dot Shape
EllipticalP, Heavy Elliptical, Light Elliptical, Line, Line1,
Round, RoundSquare (Euclidean), Square, Square1
CMYK Default
Angles
165 105 60 45
Valid Color Swaps
Cyan Magenta Black
Maxtone Y-fine
This screen system is identical to HQS Classic in all but its yellow
screen. It forms a rosette among black, magenta, and cyan.
The yellow separation is screened at 0° with a ruling about 40% higher
than the other separations. This raises the moiré frequency of yellow
with all other separation pairs to the point where it is invisible at typical
screen rulings for offset lithography. The increased yellow screen
frequency may increase dot gain, requiring color-specific calibration to
avoid a yellow cast in color reproduction.
Ruling
Ranges from 20 to 600 lpi (The available values depend
on the output device.)
Dot Shape
Round, RoundSquare (Euclidean), LightElliptical,
Elliptical, Heavy Elliptical, Smooth Elliptical, Checker,
Line
CMYK Default
Angles
75 15 0 135
Valid Color Swaps
Cyan Magenta Black
Maxtone RT01 Y0K45
This historical screen system forms a square rosette among black,
magenta, and cyan by screening these separations at slightly different
rulings and nominal rational-tangent angles of approximately 18°, 45°,
and 72°. The yellow separation is screened at 0° with a ruling slightly
higher than the black separation.
This system is susceptible to moiré in smooth tints of olive-green color.
Ruling
Ranges from 20 to 600 lpi (The available values depend
on the output device.)
Dot Shape
Round, RoundSquare (Euclidean), LightElliptical,
Elliptical, Heavy Elliptical, Smooth Elliptical, Checker, or
Line
CMYK Default
Angles
71.6 18.4 0 135
Proofs and final output
645
