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Browse Prior Art Database

DUAL MODE XEROGRAPHIC PRINTER

IP.com Disclosure Number: IPCOM000022988D
Original Publication Date: 1976-Jun-30
Included in the Prior Art Database: 2004-Mar-27
Document File: 2 page(s) / 450K

Publishing Venue

Xerox Disclosure Journal

Abstract

Information often appears at a printer in "bursts's ~f irregular and unpredictable length and frequency of arrival. The same printer may also be required to accommodate a sustained flow of information (i.e., an exceptionally long flburstli) at a relatively high rate. Despite the difficul~ ties of such circumstances, it is most often desirable, and frequently required, that data or message items be printed out as soon as possible, without waiting for the arrival of the complete page of text, This invention shows how a xero- graphic printer is made to print messages or data in the two required modes of operation:

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Page 1 of 2

~EROXDISCLOSURE JOURNAL

DUAL MODE XEROGRAPHIC PRINTER
ProposedJacob N, Kluger Classification

U.S. Cl, 355/3R
mt. Cl, G03g 15/00

2

Information often appears at a printer in "bursts's ~f
irregular and unpredictable length and frequency of arrival.
The same printer may also be required to accommodate a
sustained flow of information (i.e., an exceptionally long
flburstli) at a relatively high rate. Despite the difficul~
ties of such circumstances, it is most often desirable, and
frequently required, that data or message items be printed
out as soon as possible, without waiting for the arrival of
the complete page of text, This invention shows how a xero-
graphic printer is made to print messages or data in the two
required modes of operation:

a. Intermittently (line by line), when receiving relatively
short streams of information and
b. Continuously, when receiving relatively long streams of
information,

This invention utilizes a xerographic printer in which a
photoconductive surface 1, upon which images are projected
and toned, being in the form of a closed surface, can be
rolled on and off stationary copy paper 2 for operation as
an asynchronous printer or rotated with moving copy paper 2
in continuous contact for operation as a conventional xero~
graphic printer. The photoconductive surface 1 is applied
to a flexible (and conductive) endless belt. The belt is
provided with guides, rollers 3, and a reciprocating drive

5 6 ~~17 8

Volume 1 Number 6 June 1976 81

4

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Page 2 of 2

DUAL MODE XEROGRAPHIC PRINTER (CQnt!d)

mechanism 4 so that it can be made to roll as required onto
the copy paper 2. The belt is also provided with a drive
so that it can be made to rotate as required about the axes
of curvature. Xerographic cleaning 5, charging 6, imaging 7,
and development 8 stations are fixed in the relative posi~
tions shown,

For operation as an asynchronous printer, the cycle begins
with the belt roller off the paper (sho...