IMAGE COMPENSATOR

Publishing Venue

Xerox Disclosure Journal

Abstract

In magnetic brush development systems, the developed image sometimes suffers from a cosmetic defect called "vertical development deficiency," which appears as a reduction in line widths in developed lines that are perpendicular to the process direction (see Figure 1)-

XEROX DISCLOSURE JOURNAL

IMAGE COMPENSATOR ^ProposedH~Bresnick Classification

U.S~Cl, 350/181 Int, CL G02b 13/08

  PROCESS DIRECTION

~'~'

L L///A

INPUT OUTPUT

PLATEN

OPTICAL 0) SCANNING

WEDGE ~ LENS

PHOTORECEPTOR

In magnetic brush development systems, the developed image sometimes suffers from a cosmetic defect called "vertical development deficiency," which appears as a reduction in line widths in developed lines that are perpendicular to the process direction (see Figure 1)~

It is proposed that the image be distorted in the process direction by astigmatism into the optical system so that line widths perpendicular to direction are fatter (or spread) more than the parallel Iines~

This can be done by vibration or by an optical wedge at the object plane (see Figure

2).

\

/

FIG. /

FIG. 2

Volume 4 Number 4 3uIy/August 1979 479

introducing the process

                  XEROX DISCLOSURE JOIJRNAL 480 Volume 4 Number 4 3uIy/August 1979