Multicolor Matrix Impact Printer
Original Publication Date: 1979-Apr-01
Included in the Prior Art Database: 2005-Feb-20
The platen assembly comprises a curved platen 2 (Fig. 1) supported on the end of sector plates 11a and 11b (Fig. 2) which are rotatably supported by pivot bearings 1. The platen assembly is stepped in dot-line increments by a step motor 6 which drives a worm gear 7 in engagement with platen gear segment 5. Feed rolls 10, driven by motor 8 and a drive belt 9, draw paper web 44 from the supply roll to drag rolls 13 over the face of platen 2. Both the feed rolls 10 and the drag rolls 13 move with the platen 2 as it is advanced in step increments by motor 6. Feed rolls 10 and drag rolls 13 are located behind small radii 3 and 4, respectively, to assure tautness of paper web 44 over the area of platen 2.