Browse Prior Art Database

Original Publication Date: 1977-Feb-28
Included in the Prior Art Database: 2004-Mar-29

Publishing Venue

Xerox Disclosure Journal


In the figure, a plurality of scanning heads 10 are provided on a scanning member 11, which is mounted for scanning move-ment adjacent a drum 12. The scanning heads 10 are spaced from one another along the direction of motion 13 of the scanning member 11 (i.e., parallel with the drum axis). By using a drive arrangement, which suitably inter-relates the rotational speed of the drum and the transactional speed of the scanning member, it is possible to make the heads scan a sheet secured on the drums with interlaced paths as a multi-start helix. Suitable scanning patterns are derived from the rules that if N heads are spaced at M times the line pitch and the assembly advanced by S line pitches at each scan, then: S - N and KS $ LM, where K = any integer and L 1, 2, 3 ... (N - 1).