Browse Prior Art Database

Heated Fuser Roll Cleaning Process

IP.com Disclosure Number: IPCOM000051009D
Original Publication Date: 1982-Dec-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Chang, JP: AUTHOR [+3]

Abstract

Residual toner on the fuser rolls of a copier is removed by preceding enablement of copying operations with closure of the rollers to permit scraping of the toner and/or feeding a clean copy sheet through the rollers in the closed condition.

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Heated Fuser Roll Cleaning Process

Residual toner on the fuser rolls of a copier is removed by preceding enablement of copying operations with closure of the rollers to permit scraping of the toner and/or feeding a clean copy sheet through the rollers in the closed condition.

Conventional copiers employ a heated fuser roller 10 having a coating 11 of silicon rubber or the like and a back-up roller 15 which is scraped by a scraper blade 16 as it rotates. Such conventional copiers also include appropriate controls and mechanisms for raising and lowering roller 10, as indicated by two- way arrow 18, so that the heat from roller 10 is only transferred to back-up roller 15 during and/or shortly before the initial feeding of copy sheets, as indicated by arrows 20 and 21, over copy sheet guides 22 and 23 through the roller nip. Interruption of the copier operation, as when a jam occurs, sometimes causes toner to be left on fuser rolls 10 and 15 which acts as an adhesive, causing copy degradation or even wrapping of the copy around one of the rollers during subsequent copies. This degradation is reduced by causing roll 10 to close against roll 15 after a jam clearance sequence has been performed and powering rollers 10 and 15 so as to rotate in engagement, thus transferring the residual toner to clean surfaced roll 15 and then to scraper blade 16. This process is generally needed only when copier operation is interrupted without time to perform complete sequences and cle...