In order to ascertain what a person really sees, a monitoring, picture recording system has at least one video camera arranged in such a way that the captured images at least approximately match the field of vision observed by the person. Specifically, the reaction product of an alkali cellulose with a hydroxypropylating agent is granulated, and the resulting granular material is neutralized with an acid. A multitude of encoded images is recorded simultaneously on a focal plane array and subsequently decoded to produce a spectralspatial hypercube. The switching-on time of independent lights in the light source unit can be overlapped or not overlapped. The digital-to-analog converter transforms the output of the image processing unit and outputs the transformed result to the pixels. The print device further comprises a network communications port for communicating with the location to obtain the print content.