Abstract: Printing apparatus and method particularly suited to provide a hardcopy of an image produced by medical imaging equipment or the like. The method produces an area modulation hardcopy having a large number of gray levels per area modulation cell (pixel) and a strong density sensitivity. Pixel areas are modulated in patterns consisting of pels which in turn are made up of subpels referred to as slices which are preferably added to minimum sized pels by pulse width modulating two different sized printing radiation beams.

Abstract: Printing apparatus and method particularly suited to provide a hardcopy of an image which is produced by medical imaging equipment or the like. The apparatus produces hardcopy consisting of pixels whose size can be changed by area modulation to suit image tonal content and detail while still maintaining a large number of gray levels per area modulation cell (pixel). Preferably, the same area modulation patterns representing pixel tonal values are used for printing pixels of different sizes.

Abstract: A video identification system for producing photo print identification cards having subject portrait, subject signature and subject related data in respective areas of the card as well as a data record including individual-specific data, an image of the subject, and an image of the signature of the subject. A personal computer controls the system to produce the identification card and the data record. The system includes a frame grabber which grabs a frame by only storing the 768 active video samples of each line of an NTSC signal for two consecutive fields. System operation may not be initiated without first having a supervisor unlock the personal computer and input a particular password. Further, each additional system operator must input their particular identification number into the personal computer whereby system security is maintained.