Browse Prior Art Database

Copier Cleaning

IP.com Disclosure Number: IPCOM000084771D
Original Publication Date: 1976-Jan-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Brandon, FY: AUTHOR [+3]

Abstract

Electrophotographic copying devices provide copies by, for example, transferring electroscopic particles to a substrate and then fusing the particles to the substrate. In one type of copier, fusion is achieved by passing the substrate and adhered particles between a hot roll and a backup roll in nip contact. In normal operation, such a contact fuser can be constructed to fuse the thermoplastic particles to the substrate without becoming adhesively attached to the particles. Adhesion of toner to the hot roll contact surface is to be avoided, as it can lead to soiled subsequent copies and, in severe cases, cause the copy sheet to stick to the hot roll, causing a paper jam.

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Copier Cleaning

Electrophotographic copying devices provide copies by, for example, transferring electroscopic particles to a substrate and then fusing the particles to the substrate. In one type of copier, fusion is achieved by passing the substrate and adhered particles between a hot roll and a backup roll in nip contact. In normal operation, such a contact fuser can be constructed to fuse the thermoplastic particles to the substrate without becoming adhesively attached to the particles. Adhesion of toner to the hot roll contact surface is to be avoided, as it can lead to soiled subsequent copies and, in severe cases, cause the copy sheet to stick to the hot roll, causing a paper jam.

A simple manual technique can be utilized to clean a hot roll without entering the machine. This is achieved by processing an almost all black original through one or more copying cycles. In operation, an original having a white leading edge is placed in the copier and the copier is cycled. The large amounts of toner utilized in duplicating the all black portion, tends to cause toner adhered to the hot roll to release from the hot roll and adhere to the copy. The white leading edge allows the copy sheet to be easily removed from the hot roll, utilizing standard mechanisms within the copier.

In one form of implementation, rather than having a nearly all black original, all that is required to clean the hot roll is the placement of a white original at the leading edge of the copier...