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How does cyanotype printing work?

How does cyanotype printing work?

The cyanotype process uses a mixture of iron compounds, which when exposed to UV light and washed in water oxidise to create Prussian Blue images. The technique was invented in 1841 by Sir JohnHerschel and was popularised by photographer and botanist Anna Atkins.

How do you print cyanotypes?

Print a cyanotype by placing your negative (to reproduce a photograph) or object (to make a photogram) in contact with your coated paper or fabric. Sandwich it with a piece of glass. Expose the sandwich to UV light. Natural sunlight is the traditional light source, but UV lamps can also be used.

What is the actual process to create a cyanotype image?

To develop the cyanotype, the paper is simply washed in plain water. The areas exposed to light become blue shadows and middle tones; the excess, unexposed iron salts are washed away, creating highlights.

Do cyanotypes fade over time?

The cyanotype image is highly stable but can be degraded by something alkaline, such as sodium carbonate or perspiration. It will also fade, like most things, if exposed to strong direct sunlight over a period of time.

Is cyanotype eco friendly?

Cyanotype is a fitting choice for producing images related to the environment. The chemicals used in cyanotype have a lower toxicity compared to other photographic methods. This method also uses the environmental elements of sunshine and water thus creating a match of medium and content.

Which paper is best for cyanotype?

The Best Cyanotype Paper for Mesmerizing Prints

  1. Nature Print Paper.
  2. SunPrint Paper Kit.
  3. TEDCO Sun Art Paper Kit.
  4. Jacquard Cyanotype Pretreat Fabric Sheets.
  5. SunCreations Cyanotype Paper.

Can you wash cyanotype?

Yes, cyanotype prints are archival. However, yellowing may occur if prints are exposed to phosphates or alkaline environ- ments so, cyanotype fabrics must be laundered in cold water using non-phosphate detergents. Over-washing may also cause the print to fade.

Can you over expose cyanotype?

As you will discover, overexposing a cyanotype is a difficult thing to do. A test strip can be easily made by coating a piece of paper with the sensitizer, drying it completely, and placing a negative in contact with the emulsion.

Do Cyanotypes fade?

How toxic are cyanotype chemicals?

It is not poisonous, but it is an irritant so it can itch if it splashes on your skin in concentration. It will also irritate your eyes, so keep it out of those as well. Under normal usage it is definitely one of the safest of all of the chemical photographic processes.

How to make a cyanotype print?

Making Cyanotype Prints by Sue Reno. Mix the solution according to the package instructions. Paint it onto fabric and let the fabric dry in a dark place. Working in dim lighting, pin the treated fabric to foam board or similar portable surface. Mask the surface to form a design.

What is the process behind cyanotype printing?

Bleaching processes are ways of decreasing the intensity of the blue. Sodium carbonate,ammonia,borax,Dektol photographic developer and other chemicals can be used to do this.

  • Intensifying processes will strengthen the blue effect.
  • Toning processes are used to change the color of the iron oxide in the print.
  • How to make a cyanotype?

    How to Make Cyanotypes Mixing the Solutions. Cyanotypes are created using a mix of two iron compound solutions. To create the first, grab a scale and measure out 25g of ferric ammonium citrate and mix it in a container with 100mL of water (distilled is preferred) until it is dissolved.

    How to make a DIY cyanotype sun print?

    – Clip your design into a printing frame (different sizes available on our website). – Pin or tape your design down. – Lay a piece of Plexiglas over your design. – Just leave it unsecured.