Hectograph pencils and pens are sometimes still available.
From the en.wikipedia.org
Tattoo artists use hectograph pencils to draw pictures on paper and then transfer them to the recipient's skin.
From the en.wikipedia.org
While the hectograph process is obsolete for printing on paper, it is still used for making temporary tattoos on human skin.
From the en.wikipedia.org
Prior to the introduction of cheap photocopying the use of machines such as the spirit duplicator, hectograph, and mimeograph was common.
From the en.wikipedia.org
Fanzine printing methods have changed over the decades, from the hectograph, the mimeograph, and the ditto machine, to modern photocopying.
From the en.wikipedia.org
The hectograph introduced in 1876 or shortly before, was a technology in which a dye-impregnated master copy, not unlike a ditto master, was laid on top of a cake pan full of firm gelatin.
From the en.wikipedia.org
More examples
Copy on a duplicator; "hectograph the hand-outs"
Duplicator consisting of a gelatin plate from which ink can be taken to make a copy
The hectograph or gelatin duplicator or jellygraph is a printing process which involves transfer of an original, prepared with special inks, to a pan of gelatin or a gelatin pad pulled tight on a metal frame.
An obsolete form of printing using a gel bed and soluble dyes, capable of reproducing colour art inexpensively. Also: hecto or hekto.