Preparation Of Red Yellow Or Blue Tissues
Red Tissue.--Dissolve 10 grams of carmine in 1 liter of aqueous ammonia
and evaporate. When the smell of the alkali has almost disappeared, add 1
liter of rain water. Of this take 65 cubic centimeters, add 35 c.c.m. of
rain water, and in the solution let soak for an hour 15 grams of very
soluble gelatine, add 1 gram of sugar, and dissolve in a water bath.
Filter, and take of the mixture a sufficient quantity (25 c.c.m. for a
surface 18x24 centimeters) to cover a sheet of paper which has been
previously applied upon a glass plate in the following manner: In a tray
full of hot water, immerse the plate and the paper; remove the whole in
such a manner as the paper remains in contact with the plate; rub out the
excess of water with a squeegee, and flow the gelatine over the paper
still damp. Let cool on a leveled stand, and when the gelatine is
solidified to a consistent jelly, remove the paper from the plate and
place it to dry in an oven heated at not over 24 or 25 deg. C.
It is desirable that in drying the paper does not curl up. To that end,
apply over it, before it being removed from the plate a wooden frame to
which the gelatine, still sticky, will sufficiently adhere to hold the
tissue when it stretches in drying.
Yellow Tissue.--Pulverize to an impalpable powder 25 grams of light
chrome yellow in tablets (water color), and gradually add in stirring 1
liter of rain water. Take 100 c.c.m. of this and into it let soak for an
hour 15 grams of the same gelatine used for the red tissue, add 1 gram of
sugar, then proceed as above.
Blue Tissue.--In a liquid consisting of 85 c.c.m. of rain water and from
12 to 15 c.c.m. of blue ink, such as sold by stationers, let soak for an
hour 15 grams of the same gelatine and 1 gram of sugar, and proceed.
Preparation of Transfer Paper.--Two kinds of transfer paper are
employed--the enamel and plain transfer paper.
To enamel the paper: Dissolve 100 parts of barium nitrate in 500 parts of
water, and, on the other hand, 200 parts of sodium sulphate in the same
quantity of water. Mix, wash well the precipitate--barium sulphate--by
decantation, and when well drained, mix to the following solution:
Gelatine, Coignet's 300 parts
Glycerine 80 parts
Ultramarine blue 1 part
Crimson lake 0.1 part
Water 2,500 parts
Let soak the gelatine for, say, one hour, dissolve by heat, then add by
small quantities, stirring violently, 4 parts of chrome alum dissolved in
250 parts of hot water. Filter through flannel and coat the paper as
directed to prepare the tissue. The mixture should be employed
immediately after adding the chrome alum.
The plain transfer paper is prepared in the same manner, leaving out the
barium sulphate and the coloring matters.
Preparation of the Silver Paper.--Immerse the paper for two minutes in a
solution of--
Sodium chloride (common 2 parts
salt, dry)
Lemon juice 1 part
Water 100 parts (filter)
When dry and wanted for use, sensitize the salted paper by floating for
one minute on--
Silver nitrate 8 parts
Nitric acid 0.1 part
Water 100 parts
On its removal from the silver bath, sponge the paper between sheets of
blotting paper and hang it up to dry.
ENCAUSTIC FOR SINGLE TRANSFER PROOFS.
White wax 25 parts
Mastic 3 parts
Turpentine 100 parts
Dissolve by heat, first the mastic, then the wax, and keep for use in a
large mouthed vial.
MATT VARNISH.
Sandarac 6 parts
Mastic 6 parts
Lavender oil. 0.5 parts
Ether 100 parts
When dissolved, add 30 parts of benzine. The opacity of the film varies
with the quantity of benzine added; by excess the varnish dries
transparent.
WATER COLORS WHICH RESIST THE ACTION OF LIGHT.
Red. Indian red. Light red.
Orange. Mars yellow.
Blue. Cobalt blue. French blue. Smalt. New blue.
Brown. Raw umber. Burnt
sienna.
Green Terre verte.
Yellow. Cadmium Yellow Roman ochre.
yellow. ochre.
More
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A Poitevin's Process 1870
"I use a paper prepared with iron sesquioxide rendered sensitive to light by tartaric or, better, citric acid in concentrated solution. This paper, after desiccation and exposure to light, possesses the property of reducing the solution of silver... Artigues' Process
The Artigues process, so called, is, without any doubt, the best to be employed for the reproduction of plans and drawings in lines. It is simple, expeditious, and yields black impressions on a very pure white ground which are absolutely permanen... Causes Of Failures
The images are veiled. This defect may result from various causes, viz.: 1st. The stock ferric oxalate solution is impaired by a partial reduction of the ferric salt into ferrous oxalate. The solution should be preserved in an o... Choice Of Paper Sizing
In all the photographic processes by precipitation of metallic oxides the quality of the paper has a great influence on the results. When the paper is not well sized and not well calendered, the sensitizing solution is absorbed, instead of simply ... Cj Burnett's Process 1857
"A capital process for many purposes," says Mr. Burnett, "is to float or steep the paper in a mixed solution of bichromate of potash and sulphate of copper, as for Hunt's chromotype process.(36) I have mixed gelatine, or occasionally grape sugar, ... De La Blanchere's Process 1858
Uranium nitrate 25 parts Distilled water 100 parts Filter the solution and keep it in the dark. The paper should be sized with a gelatine solution at 5 per 100 of water, and, when dry, kept in the dark.(40) It is sensitized by floating fi... Dr Jb Obernetter's Process 1863
Copper chloride 100 parts Ferric chloride, sol. sp. 13 parts gr. 1.5 Hydrochloric acid, conc. 12 parts C. P. Water 1,000 parts Float the paper on this solution for about two minutes and hang it up to dr... Dr Tl Phipson's Process 1861
Take a solution of perchloride of iron and, having precipitated the peroxide with ammonia, collect the precipitate on a filter and wash it with boiling water. Add the precipitate in excess to a warm solution of oxalic acid. A beautiful emerald g... Godefroy's Process 1858
Float the paper upon the following solution for three minutes and hang it up to dry: Uranium nitrate 30 to 60 parts Silver nitrate 8 parts Water 100 parts (39) The sensitiveness increases in proportion to the quantity of ... Graphotypy
This process consists in converting a cliche in half tones into one in lines, which can be directly printed on paper, or impressed, by means of an ink transfer made as explained before, on a stone, or on a zinc or copper plate for etching in relie... Guarbassi's Process 1867
The paper is floated in the dark for four or five minutes on a saturated solution of bichromate of potash. When dry, it is printed a little longer than for silver prints and afterwards floated, face upwards, on a water bath until all the unaltere... H Cooper's Process 1865
PREPARATION OF THE PAPER St. Vincent arrowroot 200 grains Boiling water 10 ounces Crush the arrowroot to fine powder, then rub it to a paste with a little water, and let an assistant pour a few drams of boiling water while you ... Houdoy's Process 1858
The paper is floated upon a lukewarm solution of gelatine at 5:100, and when dry, on a bath of uranium at 10 or 15 per 100 of water. After exposure to the sun the image is developed with a solution of silver nitrate acidified with acetic acid. T... How To Make A Negative Drawing
The drawing paper for designs to be reproduced by the cyantotype and the other processes described in this book should be of a fine texture, free from opacities and very white; and, as the design must serve as a cliche it is a sine qua non that it... L Liesegang's Process 1865
Pour ammonia into a nitrate of uranium solution, wash the precipitate of uranate of ammonia in distilled water, then dissolve in citric acid. Mix this solution of citrate of uranium and a little of a solution of chloride of gold with a paste pre... Niepce De St Victor's Process 1859
Red Prints. Float the paper for fifteen or twenty seconds on a 20 per cent. solution of nitrate of uranium and dry before the fire in the dark room. This paper can be prepared many days before use. Expose in sunshine from eight to ten minut... Preparation Of Red Yellow Or Blue Tissues
Red Tissue.--Dissolve 10 grams of carmine in 1 liter of aqueous ammonia and evaporate. When the smell of the alkali has almost disappeared, add 1 liter of rain water. Of this take 65 cubic centimeters, add 35 c.c.m. of rain water, and in the sol... Printing On Wood Canvas Opal And Transparencies
Printing on Wood.--To print on a wood block a design to be engraved on the same presents certain difficulties. In the first place, the sensitizing solution must not be absorbed by the wood, but remain wholly on its surface; then the photo film, a... The Aniline Process
The aniline process was published in 1865, by Mr. Willis, the inventor of the platinotype.(11) It is based on the oxidation of aniline by chromic acid, thus: A sheet of paper brushed with a solution of potassium bichromate and sulphuric acid, drie... The Black Or Ink Process Ferro-tannate Process
This process gives black positive impressions on white ground from positive cliches, and negative impressions from negative cliches. It has been attributed to Mr. Colas, but in reality it was invented by Mr. Poitevin, who describes it as follows ... The Carbon Process
The carbon tissue is seldom prepared by photographers. However, for the sake of completeness, we shall give the formula of the mixtures most generally employed, and describe the manner of coating the paper on a small scale. Preparation of the T... The Cuprotype Burnett's Process
This process gives positive impressions from negative cliches. Uranic nitrate 10 parts Cupric nitrate 2 parts Water 100 parts Float for a minute strong, well-sized paper on this solution and let it dry spontaneously in the dar... The Cyanofer Pellet's Process
This process gives blue impressions on a white ground from positive cliches, and white impressions on a blue ground from negative cliches. It is termed "positive ferrotype process." The cyanofer is an application of one of the numerous and usefu... The Cyanotype Or Blue Process
This process gives white impressions on a blue ground with diapositives or drawings on transparent or semi-transparent materials, and blue impressions on a white ground from negatives. It is commonly known under the names of "blue print process,"... The Platinotype
This process, discovered by William Willis,(16) yields very fine impressions which wholly consists of platinum and are, therefore, chemically permanent. It has been described theoretically and practically by Pizzighelli and Kuebl in a paper f... The Primuline Or Diazotype Process
Primuline, discovered in 1887 by Mr. A. G. Green, an English chemist, is a dye of a primrose color, possessing a great affinity for cotton fibers, to which it is readily fixed by simply immersing the material for a few moments in a hot solution of... The Uranotype
This process, devised by J. Wothly, in 1864, did not receive from the photographers the attention it merits, as it is always the case when a process is patented, and can be replaced by another equally practical which is not. It gives pictures of ... Tracing Process On Metal
We call the attention of metal engravers to this process. It is well known that wood engravers have their original designs photographed on the block in order to save considerable time by not making the drawing themselves; moreover the cost is nom... X's Process 1865 Secrets Of The Uranotype
Preparation of the Uranium Compound.--Precipitate the nitrate of uranium from its solution by concentrated liquid ammonia. Let settle the precipitate, decant, and wash in several changes of water. Dissolve it by heat in pure nitric acid, taking ...