Many years ago, I saw two large photogravure prints in a gallery in the emerging Chelsea district of lower Manhattan made by Aaron Siskind. From a distance I thought they might be Robert Motherwell prints and wondered why they were in a photography gallery specializing in alternative processes. They were images of his road drippings and to me were some of the most beautiful images I had ever seen. The gallery was not showing the prints with glass so you could really admire the texture of the intaglio print. You wanted to pet it! After a long exploratory journey I discovered the polymer plate that replaced the old copper plates etched with nitric acid with the new steel plates that are etched with UV light and washed out in water.
I have been going through my collection of negatives produced over the last 40 years and selecting images that I feel could benefit from the photogravure process. Abstracts seem to be natural for the process. I have also enjoyed printing some of my nude work and have just added some of those images to my website. The reductive or minimalist nature of the work with high contrast and relatively "clean" images seem to transfer well to the intaglio print.
Like the silver gelatin process, the polymer photogravure process shares multiple steps in preparing the image. Test prints are necessary in both processes while trying to find the sweet spot of a perfect black/white contrast. The gravure may not always have the bright lines that can be developed with medium format film and the silver gelatin print, although I find the prints softer with more texture in the image. While most printing, including silver gelatin, rests on the surface of the chosen paper, the polymer photogravure process presses the paper down into the etched surfaces under very heavy pressure and the ink is pulled up into the paper. The image literally becomes part of the paper itself. Available in a wide variety of intaglio printing papers are available from around the world and numerous inks are available in wide tonal range. I have found no end to the variables.
The silver gelatin and photogravure processes have much in common beginning with images captured on film followed by multiple exposure tests and then final printing. In between is the selection of developers, inks and papers, and many judgements on cropping, placing the corners and other efforts to achieve the targeted aesthetic.