The Sulfuric Acid-Potassium Dichromate Bleach in the Black-and-White Reversal Process

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: In the processing of black-and-white reversal films, the bleach, although having a relatively simple function, can cause numerous practical problems including silver retention, black-and-white spots, and highlight stain. Actual processing machine failure can result because of undesirable but preventable sludge accumulation. It is shown that correct bleach usage and chemical formulation in conjunction with an adequate post-bleaching treatment will eliminate these problems. New bleach replenishment conditions are recommended. In addition, information relating to high-temperature processing and the use of specially formulated bleaches is presented.
Publication Date: 1963-06-01
DOI: 10.5594/J07308
Link: https://doi.org/10.5594/J07308
Author(s): John W. Zuidema

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John W. Zuidema; The Sulfuric Acid-Potassium Dichromate Bleach in the Black-and-White Reversal Process, Journal of the SMPTE ( Volume: 72, Issue: 6, June 1963); SMPTE, 1963. Available at https://doi.org/10.5594/J07308

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John W. Zuidema; The Sulfuric Acid-Potassium Dichromate Bleach in the Black-and-White Reversal Process, Journal of the SMPTE ( Volume: 72, Issue: 6, June 1963); SMPTE, 1963. Available at https://doi.org/10.5594/J07308

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<span class="citation">John W. Zuidema; <cite>The Sulfuric Acid-Potassium Dichromate Bleach in the Black-and-White Reversal Process</cite>, Journal of the SMPTE ( Volume: 72, Issue: 6, June 1963); SMPTE, 1963. Available at <a href="https://doi.org/10.5594/J07308" target="_blank" rel="noopener">https://doi.org/10.5594/J07308</a></span>

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John W. Zuidema; The Sulfuric Acid-Potassium Dichromate Bleach in the Black-and-White Reversal Process, Journal of the SMPTE ( Volume: 72, Issue: 6, June 1963); SMPTE, 1963
doi: 10.5594/J07308
url: https://doi.org/10.5594/J07308

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<li>
John W. Zuidema; <cite id="bib-10-5594-j07308">The Sulfuric Acid-Potassium Dichromate Bleach in the Black-and-White Reversal Process</cite>, Journal of the SMPTE ( Volume: 72, Issue: 6, June 1963); SMPTE, 1963
<span class="doi">10.5594/J07308</span>
</li>