Improvement in the Production of Phototypes.
Year: 1889

page_text: Date of Application, 23rd May, 1889
Complete Specification Loft, 24th Feb 1800 Accented 20th Mor
1800
PROVISIONAL SPECIFICATION.
Improvement in the Production of Phototypes.
I, JOHANNES ADALBERT FISCHER, Merchant, of Leipzig, Saxony, do hereby declare
the nature of this invention to be as follows:-
In the art of printing book illustrations the usual method of producing images in
imitation of photographs has been to print the images on specially prepared sheets
(chalk or chromopaper sheets), the said sheets being prepared with a suitable mass
on their entire surface, which could only be done at considerable cost.
On the other hand, in attempting to transfer the images on ordinary printing
paper, there arose the difficulty, that owing, to the absence of the so-called chalk
base, the sheets could not be sufficiently polished or glossed to obtain the desired
effect.
In order to simplify, and cheapen, the said printing process, I proceed as
follows:-
Any ordinary printing paper is coated with a suitable ground mass, (or the latter
pressed on), but only within the outline of the images, after which the images are
printed, and then the surface is polished or glossed.
The images or phototypes thus produced are similar to photographs or heliotypes,
but can be produced more cheaply than those which were made by preparing the
entire surface of the paper.
1000
COMPLETE SPECIFICATION.
Improvement in the Production of Phototypes.
I, JOHANNES ADALBERT FISCHER, Merchant, of Leipzig, Saxony, do hereby declare
the nature of this invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
In the art of printing, the usual method of producing images in imitation of
photographs has been, to print the images on specially prepared sheets (chalk or
chromopaper sheets), the said sheets being prepared with a suitable mass on their
entire surface, which could only be done at considerable cost.
On the other hand, in attempting to transfer the images on ordinary printing
paper, there arose the difficulty, that owing to the absence of the so-called chalk
base, the sheets could not be sufficiently polished or glossed, to obtain the desired
effect.
In order to simplify, and cheapen, the said printing process, I proceed as
follows:-
Any ordinary printing paper is coated with a suitable ground mass, (or the latter
is pressed on), but only within the outline of the images, after which the images are
printed, and then the surface is polished or glossed.
The images or phototypes thus produced are similar to photographs or heliotypes,
but can be produced more cheaply than those which were made by preparing the
entire surface of the paper.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed, I declare, that I
claim
An improvement in the production of phototypes, which consists in providing the

page_text: paper with a base of a suitably prepared mass within the outlines of the images
only, then printing the image and subsequently polishing or glossing the surface by
polishing or glossing machine.
a
T
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09
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1
1000
J. A. FISCHER.
By Fairfax & Wetter,
433, Strand, London, Agents.