Browse Prior Art Database

DELAYED SHUT-DOWN OF PRESSURIZATION FAN

IP.com Disclosure Number: IPCOM000023249D
Original Publication Date: 1977-Apr-30
Included in the Prior Art Database: 2004-Mar-29
Document File: 2 page(s) / 148K

Publishing Venue

Xerox Disclosure Journal

Abstract

A delayed shut-down timer is provided to continue the opera-tion of a copier's filtered air input fan (internal pressuri-zation fan) for a preset time period, controlled by the timer, after regular machine shut-down. The time delay after shut-down is sufficient to allow cooling of hot internal corn-porients. This is in lieu of leaving the pressurization fan on all the time. Turning the fan off right at shut-down is undesirable since hot components within the apparatus can create undesirable contaminating air flows adjacent the photoreceptor for some time after shut-down.

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

DELAYED SHUT-DOWN OF PRESSUR- Proposed Classification
IZATION FAN U.S. Cl. 96/1
CarlN.Mohr Irit. Cl. G03g

A delayed shut-down timer is provided to continue the opera-
tion of a copier's filtered air input fan (internal pressuri-
zation fan) for a preset time period, controlled by the
timer, after regular machine shut-down. The time delay after
shut-down is sufficient to allow cooling of hot internal corn-
porients. This is in lieu of leaving the pressurization fan
on all the time. Turning the fan off right at shut-down is
undesirable since hot components within the apparatus can
create undesirable contaminating air flows adjacent the
photoreceptor for some time after shut-down.

Volume 2 Number 2 March/April 1977 1

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Page 2 of 2

                 XEROX DISCLOSURE JOURNAL
2 Volume 2 Number 2 March/April 1977

[This page contains 1 picture or other non-text object]