array(1) {
[0]=>
array(41) {
["_id"]=>
string(14) "bromoil_prints"
["_enhanced_status"]=>
string(0) ""
["_abbrev"]=>
string(2) "BR"
["_name"]=>
string(14) "Bromoil prints"
["_synonyms"]=>
string(0) ""
["_use_term"]=>
string(0) ""
["_popular_start_date"]=>
string(4) "1900"
["_popular_end_date"]=>
string(4) "1920"
["_aat_id"]=>
string(9) "300138324"
["_aat_level_1"]=>
string(11) "photographs"
["_aat_level_2"]=>
string(19) "photographs by form"
["_aat_level_3"]=>
string(9) "positives"
["_aat_level_4"]=>
string(19) "photographic prints"
["_aat_level_5"]=>
string(30) "photographic prints by process"
["_aat_level_6"]=>
string(14) "pigment prints"
["_aat_level_7"]=>
string(10) "oil prints"
["_searchkey"]=>
string(7) "bromoil"
["_filename"]=>
string(1) "x"
["_type"]=>
string(0) ""
["_base"]=>
string(0) ""
["_dates"]=>
string(0) ""
["_alternative"]=>
string(0) ""
["_edinburgh"]=>
string(45) "1_early_photography_-_processes_-_bromoil.htm"
["_leggat"]=>
string(11) "bromoil.htm"
["_0896594386"]=>
string(0) ""
["_VA"]=>
string(0) ""
["_christies"]=>
string(0) ""
["_britishlibrary"]=>
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["_private_notes"]=>
string(865) "Bromoil Print
A printing technique perfected by G.E. Rawling after 1904 from contributions by earlier experimenters. The basis of the technique is that gelatin is mixed with potassium bichromate (now called potassium dichromate) absorbs less water when exposed to light than when unexposed. When oil-based ink in applied to the print surface it adheres better to areas less saturated with water and thus results in the differentiation between blacks, whites, and intermediate grays. The bromoil technique itself was introduced around 1907 and allowed photographers to produce this lithographic matrix on enlargements made on specially manufactured silver bromide paper. Inks could be applied by roller or more expressively by a stiff-haired brush. Often the final print was a result of the transfer of the ink from the matrix to a final support. (Joseph Bellows)"
["_notes_discovery"]=>
string(0) ""
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["_notes_preservation"]=>
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["_notes_summary"]=>
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string(0) ""
["_notes_current_use"]=>
string(0) ""
["_notes_identification"]=>
string(0) ""
["_notes_possible_confusion"]=>
string(0) ""
["_notes_thanks"]=>
string(0) ""
["_exhibition"]=>
string(0) ""
["_catcode"]=>
string(3) "712"
["_image_ids"]=>
string(0) ""
}
}
