Browse Prior Art Database

Copier Energization Control

IP.com Disclosure Number: IPCOM000085975D
Original Publication Date: 1976-Jul-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Hubbard, JH: AUTHOR [+3]

Abstract

Most office copiers are for use with a conventional 115 Volt, AC 30 ampere dedicated line. Start-up and run sequencing is desirable to limit peak power surges.

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Copier Energization Control

Most office copiers are for use with a conventional 115 Volt, AC 30 ampere dedicated line. Start-up and run sequencing is desirable to limit peak power surges.

Specifically, logic control is provided such that when the main power drive motor is starting and drawing its peak current, energization of the fuser's heater is not allowed, independent of the fuser's temperature control network, for a short interval of, for example, 250 milliseconds.

When the copier's illumination system is operable, for example linescanning an original document, energization of the fuser's heater is likewise inhibited. This function has the additional effect of preventing reduced line voltage which, if it occurred, could result in poor copy quality due to reduced scan speed and/or reduced illumination intensity.

In addition, when the fuser's heater is energized, energization of other heaters, such as are associated with the paper supply and/or photoconductor, is inhibited even though their associated temperature control networks may be calling for energization of these other heaters. In this manner, the fuser's heater is given priority and other heaters are energized only when two conditions exist; namely, the fuser's heater must be off, and the associated temperature control must be indicating the need to energize these other heaters.

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