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Digital Duplicators : ウィキペディア英語版
Duplicating machines

Duplicating machines were the predecessors of modern document-reproduction technology. They have now been replaced by digital duplicators, scanners, laser printers and photocopiers, but for many years they were the primary means of reproducing documents for limited-run distribution.
Like the typewriter, these machines were products of the second phase of the industrial revolution which started near the end of the 19th century (also called the Second Industrial Revolution). This second phase brought to mass markets technologies like the small electric motors and the products of industrial chemistry without which the duplicating machines would not have been economical. By bringing greatly increased quantities of paperwork to daily life, the duplicating machine and the typewriter gradually changed the forms of the office desk and transformed the nature of office work.
They were often used in schools, churches, and small organizations, where revolutionarily economical copying was in demand for the production of newsletters and worksheets. Self-publishers also used these machines to produce fanzines.〔(【引用サイトリンク】 title=Spirit Duplicator )

==Mechanical duplicators==
Until the late 18th century, if an office wanted to keep a copy of an outgoing letter, a clerk had to write out the copy by hand. This technology continued to be prevalent through most of the 19th century. For this purpose offices employed copy clerks, also known as copyists, scribes and scriveners.
A few alternatives to hand copying were invented between the mid-17th century and the late 18th century, but none had a significant impact in offices.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Duplicating machines」の詳細全文を読む



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