FAQ: How to cyanotype print
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1. What is the cyanotype process?
2. What materials do I need for cyanotype printing?
3. How does the cyanotype process work?
4. Can I use digital images for cyanotype printing?
5. Is the cyanotype process safe?
6. How long does it take to expose a cyanotype print?
7. Can I tone cyanotype prints to create different colors?
8. How do I wash and care for cyanotype prints?
9. Can I use alternative surfaces for cyanotype printing?
10. Is cyanotype printing suitable for beginners?
11. Why are my prints discolouring or turning yellow?
1. What is the cyanotype process?
The cyanotype process is a Victorian photographic printing technique that produces blue-toned images using the UV light of the sun. It was invented by Sir John Herschel in 1842, but made popular by the botanist Anna Atkins. The process involves a chemical mixture that when painted on a natural substance and exposed to UV light, create a permanent image.
2. What materials do I need for cyanotype printing?
To create cyanotype prints with Daisy Bow Craft, hand painted original kits, you'll need the following materials:
plant's or items to print
Optional:
- A glass frame to hold the flowers flush to the paper.
- White vinegar – a drop of this in the water bath increases the depth of tone of the blues.
- Tweezers to handle plants.
- Hydrogen peroxide to instantly process the final colour of the print after washing. However print will naturally develop over 24 hours.
- A squeegee to remove excess water from print to avoid water marks when drying.
3. How does the cyanotype process work?
The cyanotype process works by mixing two chemicals, ammonium iron citrate, and potassium ferricyanide, to create a photosensitive solution. This solution is then applied to paper or fabric, and an object or a negative is placed on top. When exposed to sunlight or UV light, the areas not covered by the object or negative turn blue, and when the paper or fabric is washed it results in a cyanotype print.
5. Is the cyanotype process safe?
The cyanotype process is generally safe to use, but it involves working with chemicals. It is essential to handle the chemicals with care, wear appropriate protective gear (such as gloves and an apron), and work in a well-ventilated area. Keep the chemicals away from children and pets.
6. How long does it take to expose a cyanotype print?
The exposure time for cyanotype prints varies depending on factors such as the intensity of sunlight or UV light and the thickness of the negative or object. Generally, exposures can range from a few minutes to around half an hour. I would advise making a test print to work out the best time for that day, and that object.
7. Can I change the colour from blue?
Yes, you can tone cyanotype prints to achieve various color effects. This process requires soaking the print in bicarbonate of soda solution to bleach out the blue and then adding colour. Sepia toning is a common practice and involves using a toning solution like tea or coffee to shift the blue tones to warm brown hues. Experimenting with different toning solutions can produce exciting and unique results.
8. How do I wash and care for cyanotype prints?
After exposing the cyanotype print and rinsing it in water, it's crucial to wash it thoroughly to remove any excess chemicals. Don't spray or rub, be gentle otherwise the paper will get damaged.
Hang the print to dry in a dark area away from direct sunlight. Once dry, cyanotype prints are relatively stable but would recommend that they be displayed under UV-protective glass to prevent fading over time. Anna Atkins prints have lasted about 180 years. I would recommend placing your dried prints under a carpet or in a book to flatten it.
9. Can I use alternative surfaces for cyanotype printing?
Absolutely! While watercolor paper is a popular choice, you can experiment with various surfaces such as fabric (natural fibres), wood, ceramics, and more. Each surface will give the cyanotype a unique appearance.
10. Is cyanotype printing suitable for beginners?
Yes, the cyanotype process is an excellent choice for beginners in alternative photographic processes. It is relatively easy to learn, and the materials are readily available. Plus, the creative possibilities are vast, making it a rewarding and enjoyable experience for newcomers to photography.
11. Why are my prints discolouring or turning yellow?
Prints are archival and will last forever, however can change colour when exposed to a high pH - like a cleaning detergent or pollen from a plant. To avoid this, keep hands clean of oils, don't let any detergent or rust touch the print and dry out of direct sunlight. You can purposefully change the colour of a print using a process called toning - find out more here. How to tone cyanotype prints
