Browse Prior Art Database

DEVICE AND METHOD FOR RELEASE OF LABELS FROM LABEL TRANSFER WHEELS

IP.com Disclosure Number: IPCOM000024239D
Original Publication Date: 1980-Feb-29
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 127K

Publishing Venue

Xerox Disclosure Journal

Abstract

This disclosure relates to an article-labeling device such as the type used in addressing machines and having a heat transfer wheel for transferring a printed label onto an article such as an envelope. At least a part of the heat transfer wheel has heating means for contacting and heating the label to activate, soften or tackify heat-softenable adhesive on the label to enable the label to be secured to the article. One side of the label contains a heat-softenable adhesive, and the other side of the label contains the printed information, both of which are applied to the label prior to contact with the heat transfer wheel.

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KEROX DISCLOSURE JOURNAL

DEVICE AND METHOD FOR RELEASE OF LABELS FROM LABEL TRANSFER WHEELS
Donald A. Seanor

Proposed Classification
U.S. C1. 156/568 Int. C1. B65c 9/00

Steven Strella

86

8t

F/G. / FIG. 2

This disclosure relates to an article-labeling device such as the type used in addressing machines and having a heat transfer wheel for transferring a printed label onto an article such as an envelope. At least a part of the heat transfer wheel has heating means for contacting and heating the label to activate, soften or tackify heat-softenable adhesive on the label to enable the label to be secured to the article. One side of the label contains a heat-softenable adhesive, and the other side of the label contains the printed information, both of which are applied to the label prior to contact with the heat transfer wheel.

In order to avoid adherence of tacky (partially melted) printed information to the heat transfer wheel, it is necessary to apply a release fluid to the surface of the heat transfer wheel. Means for metering a release fluid on at least that portion of the heat transfer wheel which contacts and heats the label is critical in the instant disclosure. The release fluid metered on the heat transfer wheel must be a fluid which prevents or substantially eliminates the sticking of the print to the heat transfer wheel commonly known as rroffsetrt.

The improvement set forth in the present disclosure embraces means for metering a specified class of release fluids upon the heat transfer wheel. The particular class of release fluids are polymers having functional groups. Exemplary of such release fluids are the mercapto-f unctional polysiloxane fluids. By providing means for metering a release fluid comprising a polymer having functional groups, such as a mercapto-functional polysiloxane fluid, on at least that portion of the heat transfer wheel which contacts the printed label information side of the label, offset

Volume 5 Number 1 January/February 1980 21

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DEVICE AND METHOD FOR RELEASE OF LABELS FROM LABEL TRANSFER WHEELS (Cont'd)

of label information upon the surface of the heated transfer wheel and ghost images of the label information which appear on at least the next succeeding label have been substantially eliminated.

The release agents applied to the heat transfer wheel comprise a polymer havi...