11/27/2023 0 Comments Diazo blueprint paperBooks prohibited or later destroyed because of their content survived in a relatively wide variety of forms in the hands of rare book collectors, making such artifacts perhaps even more important for the study of industrial practices than literary works collected in greater numbers by research institutions. ![]() They should be seen instead as entrepreneurs whose technological practices and business strategies were largely representative of the diversity within American publishing. Dick Company and Mimeograph technologies, comparative images for identifying selected 20th-century duplication techniques, and a bibliographical essay noting technical and historical sources for forensic analysis of print.Īmerican publishers of indecent books from 1840 to 1890 were not outsiders to the printing trades. The article includes a historical section on the A.B. It also testifies to the pragmatic approaches that the Daughters of Bilitis took in establishing a publication that proved to be a foundation for the American LGBT movement. That diversity points to a greater variety of papers and inks that need to be assessed for best care of materials. The initial issues of "The Ladder," produced by the Daughters of Bilitis from 1956 to 1972, suggest a route for identifying duplication methods during a period in which many reproduction technologies were available. Close examination of material objects tests other forms of evidence and aids in identifying potential concerns regarding handling and care by special collections professionals. Techniques applied to description of hand-press-era literary works can be turned toward popular duplication processes. More research must be done to find out if the conservation methods used in preserving architectural drawings also applicable to this office copying technic. The diazo technic is also used in architectural drawings. ![]() These residues can harm the surrounding objects. One of the five copying technics, the diazo/Océ, contains residues of chemicals use in the making process. The blue/violet inks are very light sensitive. Documents piled up in loose stacks are most vulnerable for damage by use. Therefore the copies are less strong than handmade paper made from rags. Office copy paper is machine made, wood pulp paper. Five copying technics where most popular. Almost half of the inventory numbers of the Amsterdam archives contain office copies. Literature study shows that office copies were used worldwide. The third part presents conclusions and conservation recommendations to prevent damage through use and depot storage. In order to answer the question of the relevancy of research into on the deterioration of office copies, sampling was carried out in addition to the cause of damage. ![]() To this end, the paper and ink composition of copies of diverse common techniques were analysed and the fight fading fastness of the inks was tested. The first part of the research concerns questions such as, 'What are office copies?' How were they made, and what different techniques were used in the Netherlands? How often do copies occur in Amsterdam's archives and is this quantity substantial? The second part deals with the deterioration of office copies. The aim of this survey is to find out if the current conservation policy of the Amsterdam City Archives meets with office copies requirements. This research into the deterioration of office copies is an exploratory investigative study carried out in the city archives of Amsterdam.
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