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High Intensity Light Recording Tape

IP.com Disclosure Number: IPCOM000096521D
Original Publication Date: 1963-Jul-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

King, WJ: AUTHOR

Abstract

Visible patterns of lines and dots are generated by application of a focused high intensity light onto recording tape. A permanent visual record of information is thus made under the selective application of the light beam to the recording tape under the control of an information source.

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High Intensity Light Recording Tape

Visible patterns of lines and dots are generated by application of a focused high intensity light onto recording tape. A permanent visual record of information is thus made under the selective application of the light beam to the recording tape under the control of an information source.

The recording tape is essentially a thin, low-melting recording thermoplastic layer deposited a high melting flexible backing. The layer has dyes or filler materials dispersed throughout its body. Such an increase will result in the absorption of light by the layer and the resultant internal heat generation. The backing layer is preferably transparent to the light applied to help maintain its body at a temperature well below its melting point.

The high intensity light beam is applied to a discrete area of the recording layer side of tape. The light is absorbed by the discrete portion of the recording layer and heat is generated in it.

The internal heating causes the localized melting of the discrete area of the layer. The recording layer in the immediate proximity of the melted area remains cold. The effect of this is that the melted area recedes toward the colder areas leaving the transparent backing layer visible.

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