Definitions for "Black Point"
The density and colour of the darkest black reproducible by a device.
A scanning term that describes the assigning of solid, neutral, black to the darkest area of a photograph. This causes the other tonal areas to shift so that contrast is maximized. (See "White point.")
The point on a scanned image deemed to be the darkest, and set to a CMYK value - C80, M80, Y80 K70 works well.
The tone at which a printer can no longer distinguish between it and darker tones. For more in depth information, click here.