What does "up to 38400 x 600 enhanced dpi" mean

[John1710]

I am considering buying a HP Color LaserJet Pro MFP printer, eg M477fnw

The specification for print resolution is

"600 x 600 dpi, up to 38400 x 600 enhanced dpi"

What does this mean?

Thanks

[banhien]

@John1710

Where did you get that odd number (38400 x 600). Normally both numbers should be the same. It specs only says up to 1200 dpi x 1200 dpi for scanning

       https://www.lwt.com.au/Brochures/2155277.pdf

Regards.

[Nighthawks]

Not sure where he got it, but I have the exact same question from  the Tech Specs in the HP Online Store

http://store.hp.com/us/en/cv/weekly-deals?jumpid=ma_vwa_na_1_171008#printers

HP Color LaserJet Pro MFP M477fnw

Resolution: 600 x 600 dpi, Up to 38,400 x 600 enhanced dpi

If you know what it means, please respond.  If not perhaps someone who does can chime in.

Thank you

[Nighthawks · Accepted solution]

I just found this HP document which specifically answers what 38400 x 600 enhanced dpi is.  See page 4

http://h20195.www2.hp.com/v2/GetPDF.aspx/4aa6-1606eew.pdf

38,400 x 600 dpi enhanced resolution --  Until recently, HP Color LaserJet Pro printer specifications focused on optical (or spatial) resolution, but optical resolution alone is an insufficient indicator of print quality. To address this, HP Color LaserJet Pro printers now include an enhanced resolution specification. As previously discussed, binary printers rely on dithering to create the appearance of intermediate tone levels and to produce colours other than the printer primaries. The dithering process groups individual printer dots into halftone cells, which unfortunately reduces effective print resolution. Since multi-level printers produce intermediate tone levels, they rely less on dithering. As the number of tone levels a printer can produce increases, the need for dithering decreases. HP Colour LaserJet Pro printers offer 6-bit multi-level printing, meaning they can produce 64 tone levels per pixel for each primary colour. This 64 multi-level capability means that these printers require less dithering, resulting in an effective enhanced resolution of 38,400 x 600 dpi.

[John1710]

I copied straight from the specifications section of the HP website

John