Browse Prior Art Database

PULSED IMAGING BAR

IP.com Disclosure Number: IPCOM000026619D
Original Publication Date: 1992-Dec-31
Included in the Prior Art Database: 2004-Apr-06
Document File: 2 page(s) / 99K

Publishing Venue

Xerox Disclosure Journal

Abstract

In U.S. Patent No. 4,639,073 to Yip et al., an electro-optic pulse imaging raster output scanner is described that includes means for pulsing modulator electrodes at a speed equal to the speed of a scanning polygon and in a direction opposite to the polygon scanning direction to obviate image blur. Yip et al. recognizes enhanced image clarity and reduced ima e blurring by matching

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XEROX DISCLOSURE JOURNAL

PULSED IMAGING BAR

C1.358/240 U.S. Proposed Robert P. Loce Classification

Int. C1. H04N 01/04

XEROX DISCLOSURE JOURNAL Vol. 17 No 6 NovembedDecember 1992 475

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PULSED IMAGING BAR(Cont'd)

In U.S. Patent No. 4,639,073 to Yip et al., an electro-optic pulse imaging raster output scanner is described that includes means for pulsing modulator electrodes at a speed equal to the speed of a scanning polygon and in a direction opposite to the polygon scanning direction to obviate image blur. Yip et al. recognizes enhanced image clarity and reduced ima e blurring by matching

member where a beam is focused. (In the literature of the field, this is referred to as a "pulsed imaging scanner."). Generally, as indicated by Yip et al., pulsed imaging requires that the exposed location on the recording medium remain "stationary" relative to the recording medium during the exposure period.

The present disclosure proposes a similar approach for an imaging system that employs a light-emitting diode (LED) array as the exposure source. As illustrated in the figure, full-width LED array 12 remains stationary but an associated optics device, for example SELFOC@ lens 14, is moved in the direction indicated by arrow 16 so that the exposure occurs at "stationary" location 20 as photoreceptor 22 moves in the process direction indicated by arrow 24. Although not shown, lens 14 would be suitably mounted s...