Biography
Arent Christensen (b. Aarhus, Norway 1894 - d. 1982) was claimed to have invented a technique similar to aquatint in appearance and called the "chrisgrafia" after the artist.'s name. The prints are made by painting the image on to the plates with strong varnish mixed with sand or marble dust, and 'adding' to this black oil paint for the dark parts of the image, white oil paint for the light parts. When the varnish is dry (4-12 hours) the plate is ready for printing. It is unclear how the impression was made and whether the oil paint was mixed into the varnish or painted over it.
