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Nondestructive Print Band Character Sectioning Process

IP.com Disclosure Number: IPCOM000060948D
Original Publication Date: 1986-Jun-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Bayer, RG: AUTHOR [+2]

Abstract

This process involves forming a composite consisting of a fluorescent dyed positive epoxy replica of a portion of a type band coated with a vapor-deposited metal layer and covered with clear epoxy. This enables observation of the profile of a specific character or portion of a type band during various process and stages without destruction of the band. Referring to the figures, the procedure for making the composite is as follows: 1. Creating the negative. As seen in Figs. 1 and 2, a negative 10 of the character of type band 11 to be observed is cast using a room temperature vulcanizing rubber molding compound 12. 2. Creating the positive. Negative 10 is cast in fluorescent dyed epoxy 13 to make positive replica 14 of the character being investigated. (See Figs. 3 and 4.) 3. Metallization of replica 14.

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Nondestructive Print Band Character Sectioning Process

This process involves forming a composite consisting of a fluorescent dyed positive epoxy replica of a portion of a type band coated with a vapor-deposited metal layer and covered with clear epoxy. This enables observation of the profile of a specific character or portion of a type band during various process and stages without destruction of the band. Referring to the figures, the procedure for making the composite is as follows: 1. Creating the negative. As seen in Figs. 1 and 2, a negative 10 of the character of type band 11 to be observed is cast using a room temperature vulcanizing rubber molding compound 12. 2. Creating the positive. Negative 10 is cast in fluorescent dyed epoxy 13 to make positive replica 14 of the character being investigated. (See Figs. 3 and 4.) 3. Metallization of replica 14. Following removal of excess material, the positive fluorescent dyed replica 14 is coated with a vaporized metal layer. This layer creates an impermeable barrier over the character that seals in the fluorescent dye during subsequent operations. 4. Cast metallized positive replica 14 in clear epoxy. The metallized, fluorescent dyed, positive replica 14 is finally cast in the same epoxy 15 used to create it, without the dye, to form specimen composite
16. (See Fig. 5.) 5. Grinding and polishing. Specimen 16 is ground and polished until surface 17 is at the plane of interest. By matching the material hardness used...