"Pictures" via video capture and dot matrix printer

Robert Greenstreet asked about video capture software and then output on a dot matrix printer. I have seen this done in different ways. In 1976 during the MU engineers week we used a black and white vidicon TV scanner attached to our PDP-11/20 to scan visitors to the image analysis lab. We had the person sit in a chair, hold very still, and then scanned 3 times using a color wheel to filter the image. We then both displayed the image on a RAMTEK display and printed out the image on a continuous feed printer. We used 3 printers each with different color ribbons. Interesting image if the person moved between colors. There are Panasonic dot matrix printers that have a single ribbon that is 3 colors. I think they print a line with one color than reprint without advancing each of the other colors. I think it was slow and noisy. I've seen these used in the mall, some little kiosk. They were prints on t-shirts. I think there was a special version Printronix printer that was also sold by DEC that had multicolor ribbons that would print color. I think it had a wire thread in the ribbon that told the printer which color was being printed. Maybe DEC LXY11 or P300/P600. Mike