This section is from the "Studio Light Incorporating The Aristo Eagle - The Artura Bulletin 1910" book, by Aristo Motto. Also see Amazon: Studio Light Incorporating The Aristo Eagle - The Artura Bulletin 1910.
We therefore wish to qualify our support of newspaper advertising and advise its general use only in cities of 25,000 population or less. In cities having a population of from 25,000 to 100,000 we recommend it to the downtown photographer only.
In calling on photographers, one of our plate demonstrators has found that plate tanks are not given the care they should have.
To use his words, " I called on Mr.-------, and found that his negatives were fogged, and that a good percentage of them were stained and streaked around the edges.
I secured a brush such as is used for cleaning lamp chimneys, and with the aid of a little "Dutch Cleanser" (cleaning powder), had his tank in working order in a few minutes with perfect results.
The tank, unless occasionally cleaned, will collect a corrosive substance which has its effect on development.
I have found this trouble quite frequently, and there is necessity of clean tanks as well as clean trays."
We wish to emphasize the necessity of cleanliness in all photographic processes.
Photographic materials and the formulae given to be used in connection with them are properly balanced by experts.
If the trays, dishes, or tanks used contain foreign substances collected by long continued use without cleaning, the balance of the solution is destroyed, and its action on plates or paper is not as intended, with consequent loss of quality in negatives or prints.
Don't spoil good plates, paper and chemicals. Give quality a chance attend the Eastman School.when in your vicinity. See dates to July 1 - Page 23
FROM AN ARTURA IRIS PRINT By Howard D. Beach Buffalo, N. Y.
The R. O. C. POST CARD PRINTER
The R. O. C. Post Card Printer is made for the man who desires an inexpensive, yet rapid and trustworthy machine for printing developing-out post cards.
The R. O. C. Post Card Printer may be used with either artificial or day light, but the use of artificial light is recommended owing to its greater uniformity.
The operation of the R. O. C. Post Card Printer is similar to that of an ordinary hand-printing press, as shown in the accompanying illustration. Drop the card into place against the negative, close the frame by means of the small hand lever; at the expiration of the exposure pull
back on the lever, which opens the frame and drops the exposed card. The action of closing the frame automatically opens the exposure shutter, and opening the frame closes it. Every mechanical feature is positive in action,
Showing interior construction with Shutter partly opened
Showing Printer with front removed for changing negative and practically impossible to get out of order.
The negative is placed in position by removing the front of the printer, and lifting out the spring retained back as shown in above illustration. The printing opening is made full cabinet size, and a cut-out is furnished for post card size, so that the entire surface of the card may be printed, or any portion masked as desired; both negative and mask being retained firmly in position by the strong springs at each end of the frame. The back of the light box is fitted with a sheet of fine ground glass for diffusing the light, which glass can be removed or replaced instantly.
The wood parts are constructed of cherry, handsomely finished, all brass fittings polished and lacquered.
The R. O. C. Post Card Printer may be installed in a few minutes and will afford most satisfactory results. The price is seven dollars and fifty cents and your stock house can supply you.
To-day would be a good time to order.
SOME FURTHER NOTES ON TANK DEVELOPMENT BY ONE OF THE STAFF OF THE EASTMAN SCHOOL OF PROFESSIONAL PHOTOGRAPHY
In my travels around the country I naturally meet all sorts of people and encounter a good many peculiar ways of doing things photographic - some right and some wrong. Once in a while, not often, however, I find some man using the tank and complaining of transparent spots in his negatives. This I find is caused by using a tank that can not be reversed or in failing to reverse a tank that can. This is also the cause of greater density at one end of the plates, as the developing solution is naturally heavy with chemicals, and if not stirred up by reversal, these chemicals will slowly settle toward the bottom, affording a stronger solution at that point. Use only a tank that can be reversed, and one with an air tight cover, and then proceed in this manner:
Fill the tank with the prepared developer, and test it accurately for temperature; next place the cover on and shake the tank thoroughly, and allow the cover to remain on until your plates are loaded into the rack. Next remove cover from the tank, and lower your rack of plates very slowly into the solution, and when fully immersed move the back up and down several times, but do not bring it above the surface of the solution, then replace the cover on the tank and shake it up thoroughly. This will insure all air in the developer coming to the top, and will do away with the transparent spots. Reverse the tank several times during the period of development; this keeps an even mixture and avoids unequal density at one end of the plate.
I have an acquaintance in one of the larger cities who makes anywhere from twelve to fifteen exposures of every subject. In his dark room he runs eight or nine of the Eastman Plate Tanks; he has a boy to look after the tanks, and every once in a while the boy comes into the studio and takes away all the plates that have been exposed, and they keep their tanks running all the afternoon. The tanks are all placed on a long shelf and as each tank is loaded the boy sets the dial on the front of the tank to indicate the time when development will be completed, and can thus easily keep track of every tank and produce negatives of absolutely uniform quality. My friend told me that for years he or his dark room man had to remain in the dark room till eleven or twelve o'clock at night developing the day's exposures, but now, thanks to the tank, when supper time comes they are through.
I want to say a few words about backgrounds - a white ground should be treated differently from a dark one. We know that when developing a white ground that we have to carry it pretty well along, developing a little further than usual, in order not to produce a flat appearing negative, that will yield a gray instead of a white ground. A prominent operator follows the plan of separating his light and dark background exposures before development and in making up his developer for the white grounds he uses only fifty ounces of water instead of sixty-one and develops for the usual thirty minutes and obtains highly satisfactory results. Now fifty ounces of solution will just cover the plates and in following this method you will have to exercise care not to lose any of the solution when filling the tank or in lowering the plate rack, or else a portion of your plates will not be immersed during development.
I trust these few pointers gained from my experience will be of service to you, and assist you in obtaining the full value of that most useful appliance, the Eastman Plate Tank.Get a Copy of Manual Artura Results