Noise emissions while printing

This criterion limits the noise levels of imaging equipment.

Criterion ID


Criterion level


Criterion type

Technical specification

Criterion text

The imaging equipment must meet the requirements regarding noise levels in operating mode, described in Blue Angel (the German Ecolabel), Office Equipment with Printing Function DE-UZ 205 (2017), section 3.5.

The stated A-weighted sound power level, LWAd, must be tested according to ISO 7779. The sound power level shall not exceed the limit value according to the following formula:

LWA,lim = 47 + 15 * lg ( SM/F + 10) dB

SM = page throughput in monochrome mode
SF = page throughput in colour mode

The stated A-weighted sound power level, LWAd, is calculated as follows:
LWAd =LWA1 + 3.0 dB