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CARBON

Title: CARBON
Category: Science & Technology
Details: Words: 1053 | Pages: 4.5 (approximately 235 words/page)


CARBON

CARBON process, The Print fading was a common occurrence in the earliest days of photography, and several people sought to address themselves to this problem. In the mid 1850s some began to experiment with carbon, and in 1864 Joseph Wilson Swan perfected the process, which he also patented. Prints made using this process came in any colour, and were permanent. The sensitising solution consisted of a mixture of carbon, gelatin, the colouring material, and potassium bichromate. …showed first 75 words of 1053 total

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showed last 75 words of 1053 total…Precautions for Carbro Printing · Use the least toxic bromide developer. · Do not heat or add acid to sodium thiosulphate · Wear gloves when handling dichromate sensitizer. Mix in a fume hood, glove box or wear an approved toxic dust mask. · Avoid inhalation of pottasium bromide powders. · Wear gloves when handling solutions during transfer and development of the carbon tissue to avoid skin contact with pottasium dichromate and pigment suspended in gelatin. Return to Table of Contents

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