Mono print
The black and white print speed provided by the printer. It should be noted that this parameter is often indicated for low quality when the device is running at maximum performance; at a higher quality (even at standard), the actual speed can be noticeably lower, so you should choose with a certain margin. Also note that high speed significantly affects the price, power consumption and noise level. Therefore, it does not always make sense to chase maximum performance — for simple applications (for example, at home or in a small office), a relatively slow and inexpensive device may be the best choice.
As for specific values, speeds
up to 20 ppm are considered relatively low,
20 – 30 ppm — average,
31 – 40 ppm — decent, and the fastest models are capable of delivering
more than 40 pages per minute.
Duplex printing
Automatic duplex printing function .
In this mode, the user does not need to manually turn over each sheet and send it to print on the second side — this will be done by the printer mechanism, and materials printed on both sides will immediately enter the output tray. This not only saves time, but also eliminates confusion: a person can make a mistake and print one of the sides “upside down”, automation does not allow such errors.
Monthly resource
The maximum number of pages the printer can print in a month while still operating at full capacity.
Mono cartridge resource
The maximum number of pages that the printer's ink (toner) can print. The value is rather conditional, in reality the deviations from the norm are very large (up or down). In inkjet printers, the cartridge life is relatively small and amounts to several hundred prints. In laser and LED devices, the bill is already in the thousands.
Cartridge model
The types of cartridges (both black and white and colour) used in the printer. Some printer models are able to work with "non-native" cartridges, but this feature usually refers to undocumented features, and the manufacturer's warranty covers only specific types of cartridges. So use "non-native" models with caution.
Noise level
Approximate noise level generated by the printer during normal operation. The decibels in which the noise level is expressed is a non-linear value, so it is easiest to evaluate this indicator using comparative tables. The
quietest printers give out about 35 dB — this is the volume of a conversation in a whisper, such noise will not stand out even in a quiet library reading room. A volume of 40 dB approximately corresponds to a conversation at an average volume, according to sanitary standards, this is the upper limit of permissible constant noise in residential premises during the day. For offices, the border is slightly higher — 55 – 60 dB, this is the volume of a conversation in raised tones. And the most powerful and heavy models give out up to 70 dB — this is comparable to a noisy city street; if such a printer is planned to be used frequently, it is advisable to install it in a separate room.
In general, lower noise levels make the device more comfortable to use, but may affect performance and/or price.