Full Spectrum Laser HL40-5g Hobby Advanced, User Manual, Page: 58 / 91

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major slowdown in performance. Ignoring the vector data will also allow faster print jobs if only
raster is required.
DPI SELECTION
Full Spectrum Laser recommends default settings of 500x500dpi for most applications; text as
small as 4pt can be engraved at 500 dpi with excellent readability. Typically, 1000 dpi is only used
special cases. The dpi setting also affects the delivered power density, as higher dpi settings
correspond to a higher number of pulses per square inch. It is also important to note that due to the
focused beam spot size (0.002­0.005 inches) there will be pixel overlap at higher dpi settings. This
leads to a blending effect in the overlapped areas, which will lead to a darker engrave result on
particular materials, such as wood.
The dpi settings affect the print processing resolution. The maximum printing resolution is set in the
configuration file and displayed in the control panel in the Source Image Info box. The final
resolution is set to the maximum of the configuration file setting and the dpi selected from the
dropdown menu. The default setting is 250 dpi. By selecting 1000 dpi before printing, the laser will
import at 250 dpi then upscale the image using a bi­cubic interpolation to 1000 dpi.
RetinaEngrave stores the source image in memory and converts it to grayscale before dithering.
Due to the large number of pixels in a 1000 dpi image (1 million pixels per square inch) your
computer may run out of memory. Computers with less available memory should select 250 dpi
before printing because even at an input resolution of 500 dpi the memory requirements can be
high.
POSITIONING WHEN RASTER ENGRAVING
When you raster an image, the laser head accelerates
to the desired speed over some at the default job
origin—if you are using a changed origin, such as a
center origin, the laser head will still move to the
upper left corner before beginning the job. Because
of the acceleration and deceleration distances, some
jobs will require a one (1) inch buffer on the left and
right sides to avoid crashing the laser head.
Technical Support is available from 8:00 am (PST) to 5:00 pm (PST) Monday through Friday at
support@fslaser.com ​ .