Papier FOLEX BG72 Transparent Retropro Laser 125µ, A3, 50 feuilles: Amazon.fr: High-tech. Novalith NLA3/LSII.1 : film polyester transparent 100µ insolable - B. 100 f. A3. MikeWare - Welcome. Greetings, gentle reader!
Welcome to this site which reflects my interest in the Science, History and Art of the so-called "Alternative" Photographic Processes. It's likely that you were brought here by an existing interest in this subject, but in case not, my essay Alternative Printing: A Conspectus will outline for you the background to this practice, should you wish it. You are welcome to download and use any of the instructional notes, essays, images or data that I place on these pages. In return, I would ask: If you quote any of this material, please acknowledge the source. If you want to contact me, the e-mail address is: mike@mikeware.co.uk To purchase any of my books, please visit the Siderotype.com website.
Cyanotypie sur Galerie-Photo.com. Introduction La cyanotypie est une technique de fabrication de papier photographique qui permet de produire des images bleues.
Il s'agit certainement du procédé de fabrication de papier photographique le plus facile. La seule difficulté du procédé réside dans l'approvisionnement en produits chimiques. En effet, le citrate de fer ammoniacal vert ne court pas les rues... vous en trouverez heureusement sur la boutique... Il est très important de procéder avec précaution lors de la manipulation des trois produits chimiques nécessaires à la fabrication des cyanotypes. Un peu de chimie En 1842, W. Matériel nécessaire - 2 seringues et 2 récipients qui ferment hermétiquement - 1 petit récipient pour préparer le mélange - Du papier très bien encollé - 1 pinceau ou 1 rouleau, ou encore 1 tube en verre - 1 plaque en verre - Une source d'ultraviolets.
Chimie Cyanotype. Un article du site scienceamusante.net.
La photochimie est une partie de la chimie qui étudie ce type de réactions provoquées par la lumière, c'est-à-dire les ondes électromagnétiques, ou photons. Fabriquer des cyanotypes est une belle expérience pour montrer que les produits chimiques peuvent réagir grâce à la lumière. Un mélange photosensible est utilisé sur une feuille pour reproduire une photographie monochrome. On doit l'invention des cyanotypes à Sir John Herschel (1792-1871) en 1842[1]. Cyanotype Instructions from Blueprints on Fabric. Please read all instructions before opening bag NOTE: These instructions apply to treated paper as well as fabric!
Use within 6 months for best printing results (bright blues and good contrast). When you open the black bag,the white fabric or paper will appear yellow/green or greyish blue depending on what material you are using. (The colored fabrics will look like a dulled version of the color). The final blue color will not be visible until the material has been exposed, rinsed and dried The fabrics are fully treated which means both sides have the cyanotype chemicals and you can print on either side. . • Blueprints are photographs – not dyes. • The image is permanent, but the blue color will change to yellow if washed with phosphates, soda, borax or bleach. • To preserve the original blue color – hand wash using only a small amount of NON-PHOSPHATE liquid soap.
. • Dry cleaning is NOT recommended. • Blueprints can be ironed using a dry iron. Tips for Printing Have fun! Trouble Shooting. Cyanotype – the classic process « Cyanotypes. Writer / Malin Fabbri and Gary FabbriPhotography / Malin Fabbri Cyanotype process – a modified extract from the book Blueprint to cyanotypes describing the classic or traditional cyanotype process.
Always be careful when handling chemicals. Read the health and safety instructions. Unlike photographs set in silver, like in black and white photography, cyanotypes are using a solution of iron compounds. The photograph can be taken with a camera, like a digital camera, and the resulting photo turned into a negative that can be used to make a cyanotype. The basic cyanotype recipe has not changed very much since Sir John Herschel introduced it in 1842. The cyanotype process at a glance The cyanotype process is simple.
Mixing chemicalsThe cyanotype is made up of two simple solutions. Potassium ferricyanide and Ferric ammonium citrate (green) are mixed with water separately.The two solutions are then blended together in equal parts. Preparing the canvas Printing the cyanotype Processing and drying.