Les chassis contacts Argentum assurent une pression puissante et adaptée à la pratique des procédés anciens, notamment pour le tirage par contact à la lumière solaire ou sous insoleuse UV.
Le processus peut être interrompu pour contrôle en ouvrant une partie du chassis. Le film et le papier restant maintenus par l'autre partie, on peut refermer et continuer l'exposition si nécessaire.
Le chassis est également un excellent moyen pour assurer une parfaite netteté sous l'agrandisseur.
Le verre se retire, permettant de placer le papier, puis le négatif, et enfin le verre. En retournant le chassis, vous assurez la pression au moyen des ressorts avnt de commencer le contact.
Les formats annoncés sont standards, et la partie acceptant le papier est en fait plus large de 1cm par coté. Le verre est épais de 3 à 4mm selon le format.
Nous pouvons fabriquer à vos mesures. Bois en finition huilé, comme nos chambres.
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Argentum contact printing frames ensure adequate and powerful pressure, so they are highly
recommended to be used for historical photographic procedures, where contact printing of
negatives is done by sunlight or UV light.* The process of contacting can be checked by
interrupting it, and opening one side of the frame. When closing it back again, contacting can
be continued with the negative not being moved. The contact printing frame also is of good
use, when the photographer wants to make contact prints onto enlarging paper in the
darkroom.
Contact printing starts by turning out the bars that ensure pressure, then holding together both
main parts of the frame, it should be turned over in a way that the part which holds the glass
should be upward (upper left picture). Afterwards the part of the frame holding the glass is to
be removed from the frame and be put aside. Then the paper is to be inserted into the frame,
and the negative comes upon it, that will be very easy to be positioned this way. After putting
the part that holds the glass back again, the frame should be turned over. After this, the
pressing bars should be turned into their position to start contacting.
Contact printing frame is produced in three sizes: 24x30, 30x40 and 40x50 cm. These sizes
are nominal, while the real dimensions of the part that accepts the paper is bigger by 1-1 cm.
In case of special demand, other sizes might be ordered. The thickness of the used
glass - depending of the nominal size - is 3 or 4 mm. The stock of the frame is ash. The
solidity and the elasticity of this type of wood makes it suitable for making printing frames.
The treatment of the surface - just as with the cameras - is done by special oil.