Multiple Character Set Print Wheel
Original Publication Date: 1983-Dec-01
Included in the Prior Art Database: 2005-Feb-08
Selection times and operations are reduced and print speeds are increased with a multiple character set print wheel having characters arranged on concentric circles such that whole words, or multiple character portions of words, are formed radially. Printing is performed in back-printing mode and in the 3 o'clock or 9 o'clock position as a function of font design. Figs. 1 and 2 depict a plate 1 containing nine concentric rings 2 of characters 3. Plate 1 is attached to a selection device 4 which, in turn, is secured to an arm 5. Selection device 4 rotates plate 1 in the direction of arrow 6 to bring the selected character 3 on one of the rings 2 in alignment with hammer 7 of hammer unit 8 in print line 9. Hammer unit 8 might contain several hammers 7 distanced the same amount as the rings 2 are distanced radially.