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Analysis of DEH by Tristimulus Colorimetry

IP.com Disclosure Number: IPCOM000044841D
Original Publication Date: 1984-Nov-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Chen, HH: AUTHOR [+3]

Abstract

Colorimetry is used to determine if impurities exist in p-diethylaminobenzaldehyde diphenylamine hydrazone (DEH). This material is useful as the hole transport molecule in electrophotographic photoconductors.

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Analysis of DEH by Tristimulus Colorimetry

Colorimetry is used to determine if impurities exist in p- diethylaminobenzaldehyde diphenylamine hydrazone (DEH). This material is useful as the hole transport molecule in electrophotographic photoconductors.

A 4.5 gram sample of DEH is placed in a 2-ounce glass bottle, and 75 milliliters of acetone is added. A polyethylene cap is used to close the bottle, and the contents are thoroughly mixed.

The mix is then placed in the optical cell of a colorimeter having a transmission compartment. The cell is covered with a Teflon stopper during test. The Rd, a, b, and Y.I. values obtained from this colorimeter are recorded.

The tristimulus color values of the DEH solution under test are then correlated to the performance of a number of electrophotographic photoconductors which were made from a number of DEH samples having different known tristimulus values. This correlation allows one to determine the electrophotographic performance which would result from using the DEH undergoing tristimulus test.

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