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Browse Prior Art Database

OPTICAL SCANNER FOR COMPUTER PRINTER OR FACSIMILE PRINTER

IP.com Disclosure Number: IPCOM000022874D
Original Publication Date: 1976-Mar-31
Included in the Prior Art Database: 2004-Mar-27
Document File: 2 page(s) / 233K

Publishing Venue

Xerox Disclosure Journal

Abstract

This invention relates to a non-impact serial printer employing a pulsed dye laser 1, an electro-optical modulator 2 and a diffraction grating 3 for selectively exposing a photoreceptor 4 in an image configuration. The latent image formed on the photoreceptor is capable of being developed and transferred by classical xero- graphic techniques

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XEROX DISCLOSURE JOURNAL

OPTICAL SCANNER FOR Proposed Classification
COMPUTER PRINTER OR U,S. Cl, 350/162R
FACSIMILE PRINTER Into Cl, G02b 5/18
J, E, Adams

This invention relates to a non-impact serial printer
employing a pulsed dye laser 1, an electro-optical
modulator 2 and a diffraction grating 3 for selectively
exposing a photoreceptor 4 in an image configuration.
The latent image formed on the photoreceptor is capable
of being developed and transferred by classical xero-
graphic techniques

Advantage is taken of the time dependence of the center
wavelength of a pulsed dye laser, Specifically, such a
laser is characterized when operating at a standard wave- -

length of 7000 A by a monotomic change of about 200 A in
its spectral output, Moreover, the spectral beam width
may be adjusted by selection of the

                             0on-time (pulse length)
of the laser to be approximately 1 A~ Accordingly, by
using an electro-optical modulator to modulate the laser
beam in accordance with the information to be printed and
by then passing the modulated beam through a diffraction
grating with suitable resolving power, the scanning action
necessary for serial printing may be attained, For example,
a diffraction grating with a resolving power of 7500
(e~g~,a l/2~grating with 15,000 lines/inch) provides
200 resolvable elements/scan,

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Volume 1 Nunther 3 March 1976 91

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92 XEROX DISCLOSURE JOURNAL

Volume 1 Number 3 March 1976

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