Hectograph is described as a 19th-century process for duplicating documents using aniline dyes.

Hectograph is defined also as a contrivance for multiple copying, by means of a surface of gelatin softened with glycerin. It is an obsolete form of printing using a gel bed and soluble dyes, capable of reproducing colour art inexpensively.It is also known as hecto or hekto.

-see also:
"Hectograph" is in the HS Code "8472"
  Other Office Machines ( For Example, Hectograph Or Stencil Duplicating Machines, Addressing Machines
Ref: 124118/2006-09-19

Other Database Pages Exist for this Phrase:
Gelatin (Gelatin is a protein extracted from animal hides. ..)

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