#tbt – Fun With Cyanotype

In 2020 I bought a cyanotype kit for the kids. I had ulterior motives, though. I wanted to try printing from negatives. Unfortunately I don’t have the equipment for darkroom printing, nor do I have any large negatives since I throw them away after I scan them.

The easiest and cheapest way around this is to use cyanotype printing. All it requires is some sunlight, a couple chemicals, and a large transfer. To do the transfer, I used some clear laser printer transparency. By picking the images I wanted to print and inverting them in photoshop, I was able to create 8×10 negatives. Don’t get me wrong, they aren’t negative quality, but they work for this purpose .

Laser printer transparency “negative”
Laser printer transparency “negative”

The prep work for the cyanotype consists of mixing two chemicals together in a small amount and brushing a coat of it into watercolor paper or fabric. After the paper dries (in the dark) it turns yellow and is UV sensitive.

Taking a dry sheet, I laid the transparency on top of it and converted it with a piece of picture frame glass to keep it pressed against the paper. The average time was about 7 minutes in full sun.

Exposing the paper to sunlight
Exposing the paper to sunlight

After the exposure, it was time to rinse. I filled the sink with a little water and added some hydrogen peroxide as an oxidizer to speed up development. It takes about 30 seconds to develop and then a couple hours to dry completely.

The finished product was pretty decent. For the most part, the transparencies turned out ok but a couple had streaks. This was likely because adhering toner carbon to plastic sheets isn’t a perfect science.

Crotchety old coot hates getting his picture taken.
Crotchety old coot hates getting his picture taken.
Full crop of a cyanotype print. Excellent detail for watercolor paper and laser printing transparency.
Full crop of a cyanotype print. Excellent detail for watercolor paper and laser printing transparency.

Overall it was a fun process and I encourage anyone itching to dip your toes in the water of darkroom printing to give this a try first. You don’t need a film camera either. Take a photo on your phone or digital camera, Desaturate and invert it in an image editor, and print to transparency.

Fleur
Fleur
Gizmo from Gremlins - taken with a digital camera and transferred.
Gizmo from Gremlins – taken with a digital camera and transferred.
Save paper by putting multiple images on one transparency
Save paper by putting multiple images on one transparency

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

Blog at WordPress.com.

Up ↑

%d bloggers like this: