Universal Laser Systems Laser Platform M-300 Instrukcja Naprawy Pobierz pdf (Strona 34)

4-8 Computerized Controls

Halftone (coarse)

This is the same as Halftone (fine) except that the black and white bitmap that is produced has

a lower numbered lines per inch screen. Lower numbers will produce less black dots and the

size of the black dots will be larger. This is in comparison with the higher numbered lines per

inch screen pattern of the Halftone (fine) selection.

RESOLUTION ANGLE SHAPE LINES PER INCH

1000 45 DEGREES ROUND 90

500 45 DEGREES ROUND 45

333 45 DEGREES ROUND 30

250 45 DEGREES ROUND 22

200 45 DEGREES ROUND 18

Error Diffusion

Scatters the pixels in a random pattern to represent shading. This randomized dither pattern is

unlike the fixed pattern of a “Halftone” screen and can be adjusted. Error Diffusion represents

the grayscale bitmapped image by adjusting the number of black dots as opposed to the size of

the black dots. The pattern created will be dependent on the Resolution (DPI) setting that you

choose in the driver with the exception that there is no chart to reference. Higher resolutions

such as 1000 DPI will produce a more densely packed, higher dot quantity pattern whereas

lower resolution setting such as 250 DPI will produce a loosely packed, lower quantity dot

pattern.

Helpful Tip

Engraving grayscale bitmaps with a laser system requires some practice and a bit of trial and

error to achieve perfection. It also requires some knowledge of bitmap editing software. These

images will visually appear different on one material as opposed to another material even if you

use the same driver settings. As a rule of thumb, use the Halftone (fine) or Diffusion pattern on

harder materials such as marble, anodized aluminum, microsurfaced engraving plastic, or

coated metals. Use the Halftone (coarse) pattern for softer materials such as wood or materials

that you intend on engraving very deeply. Refer to the Special Applications Guide for a more

thorough description of how to use, manipulate, and engrave these types of images.

This selection, located in each tab, accesses the driver’s help screens.

Tuning Tab

As part of normal maintenance, the laser system must be periodically adjusted in order to obtain

the highest quality laser cutting and engraving. The settings in this tab allow several different

types of tuning adjustments. There are separate adjustments for Raster engraving, Vector

Scaling, Rotary Rotation, and restoring driver defaults.

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Universal Laser Systems Laser Platform M-300 Instrukcja Naprawy Strona 34