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MULTIPLE-LINE INTERLACED FACSIMILE SCANNING

IP.com Disclosure Number: IPCOM000023229D
Original Publication Date: 1977-Feb-28
Included in the Prior Art Database: 2004-Mar-29
Document File: 2 page(s) / 212K

Publishing Venue

Xerox Disclosure Journal

Abstract

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).

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XEROX DISCLOSURE JOURNAL

MULTIPLE-LINE INTERLACED FACSIMILE SCANNING Richard C. Marshall

Proposed Classification
U.S. Cl. 178/7.6
tnt. Cl. H04n 3/00

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).

Volume 2 Number 1

12

January/February 1977 17

V

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