Los Angeles herald. [microfilm reel] (Los Angeles [Calif.]) 1900-1911, 1908-03-08

When you are sure the negative is thorough
ly dry, place it in the printing frame with
sheet of the cyanotype paper cut the right
size, with the prepared side next to the film
of the negative.
The frame should then be put where the
suns rays will fall upon the glass, and allow
ed to remain there till the cyanotype paper
has turned to dull bronze in the shadows.
1t will be necessary to look at the print
from time TO time to see when this point is
reached. IL the paper is not allowed to
print long enough the result will be that the
picture will wash off the paper when 1t IS
put in water.
When you think il is done, place it in rum
ming water, or in several changes OF water,
and wash it thoroughly. II should be wssh-
ed till the water that drips from. 1t Is m no
longer discolored but is perfectly clear. The
picture then should stand out in blue tones
on a clear white ground.
II your negative is a thin one, a diitused
light is better for printing than the direct
rays of the sun. Diffused light is strong
light that Is not sunlight.
If the negative is exceedingly thin. the light
indoors away from the window, will be SUI
ficient. Satisfactory results cannot, of course,
be achieved with too thin negative, but this
diffused light will give the best print that
you can obtain.
In examining the print from time to time
be sure that you do not open both SIDES OF
the printing frame at once, for if you should
do this, you will find it impossible to replace
the print in exactly the same position, and so
it will be spoiled by being printed with double
lines.
No exact rule can be given for the length
of time which should be allowed for the
printing Of a negative. 1t should, however,
be allowed to become twice Cas dark as 1t
ought to be after the picture is toned and
mounted. The after processes of toning
bleach the print very much, as the amateur
win discover for himself
1T a negative is very dense or thick, as
over-development viii sometimes cause 1t to
become, the time for printing will be consid-
erably extended While in good light, with
negative of the right density, five minutes
or less is sufficient to print a negative. three
or four hours will sometimes be required.
When the print has become dark enough,
1t should be removed from the printing frame
and put at once IN q dark place where the
light cannot reach it. It is what Is known as
a. proof at this stage, and the light will turn
About twenty prints can be toned at once.
and, as i is long process it is better to
want until several have accumulated than to
go through the various operations with only
one or two prints
OF course all these directions are for plate
cameras, but amateurs usually prefer film
cameras and also buy all their solutions
ready made UP for mixing. There are many
kinds OF papers and solutions on the market
and each one has to be treated differently.
After every trace of the fixing bath has
been removed, the prints may be taken FROM
the water and dried between sheets Of chemi-
cailyPure blotting paper. They viii not curl
simply exposed to the air.
The prints are now ready to mount. This
is by no means the least difficult nor,the least
important OF the many processes necessary
has been exercised in all the other processes,
yet If the prints are carelessy mounted they
will not look well.
The prints should be wet in clean water
faces down. II is necessary to have a very
adhesive paste to make the prints stick well
to the mounts.
Boiled laundry starch, with the addition of
be easily made, and with the addition Of
few drops Of earbolc acid will keep well. It
is made IN the proportion OF one and three
quarter ounces of starch, mixed with one
ounce of water, till it is smooth paste, as
thin as cream, and eighty grains of glue added
with fourteen ounces Of water. The whole
should be well boiled and six drops OF car
bolc acid added. This can be put in bot
tie. and viii keep long time,
After the water IS pressed from the wet
prints bristle brush is dipped in the paste
and drawn back and forth over the print, till
it is thoroughly covered
The position on the mount should have
been previously marked with pencil or with
pin-pricks, and when the print is well covered
with paste it should be carefully lifted and
put in place With piece Of paper laid over
it and fiat papercutter, all the unnecessary
paste and any bubbles OF air may be pressed
out from between the print and the mount
With soft cloth wipe away the paste that
is pressed out around the edges Of the print
and then put it under weight to dry.
If it is desired to mount prints in an album,
piece of cardboard, an eighth of an inch
smaller than the print, should be placed upon
the back of the print and the exposed edge
possible and Eft it in place at once, before
the paste has time to dry Pass a soft cloth
over it to press it into place and then close
the album. In less than an hour it will be
dr-u and IL nrnnerlY mounted will be firmly