Browse Prior Art Database

One Use Typewriter Ribbon

IP.com Disclosure Number: IPCOM000095977D
Original Publication Date: 1964-Nov-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Edds, KE: AUTHOR [+3]

Abstract

A mixture of polyethylene coloring matter and silicone is applied to a polyethylene substrate to form a complete transfer i. e., one-use typewriter ribbon. This mixture, which ultimately forms the imaging layer, is applied to the substrate while dispersed in the solvents toluene and 1, 1, 1-trichloroethane. The formula of the imaging mixture is: Polyethylene, low density 6 p/wt. Carbon black 2 p/wt. Dyestuff, sudan deep blue black 4 p/wt. Dimethylpolysiloxane 1 p/wt.

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One Use Typewriter Ribbon

A mixture of polyethylene coloring matter and silicone is applied to a polyethylene substrate to form a complete transfer i. e., one-use typewriter ribbon. This mixture, which ultimately forms the imaging layer, is applied to the substrate while dispersed in the solvents toluene and 1, 1, 1-trichloroethane. The formula of the imaging mixture is: Polyethylene, low density 6 p/wt. Carbon black 2 p/wt. Dyestuff, sudan deep blue black 4 p/wt. Dimethylpolysiloxane 1 p/wt.

The polyethylene and carbon black are milled together. Then the polyethylene is dissolved in toluene at 130 degrees F. The remaining material is added with stirring. A weight of 1, 1, 1-trichloroethane equal to the toluene weight is added at 130 degrees F. After coating on a high density polyethylene substrate, the solvents evaporate completely in normal room conditions under an exhausting fan.

The ribbon yields a good, clean write and has desirable temperature stability.

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