Edit: I would like to know how to make InkAid or something similar from raw materials, so that it can be converted into an aerosol or just handled better.
Regular paper is cheap, but photopaper costs a LOT! Likewise, transparency film, used for old projectors, is usually made from just ethyl acetate, and is really cheap. But in transparency film for Inkjet printers, a special coating is applied to this film help absorption, just like in photopaper. Again, the price goes up a lot with this coating. Apparently this special coating raises the price of paper a lot. It's also difficult to find a good DIY instructable online for how to make this coating and how to apply it.
Apparently this coating may be known as a "receptor layer". This site classifies them into two types: "particle" and "polymer".
Very broadly, it says that a layer can be made of one of any of the following materials:
- Particle: Silica, Alumina
- Polymer: Cellulose, gellatin, Polyvinyl alcohol
It would be cool if you could spin one of these materials into an ink. Then you could start with regular printer paper, and print a full-color sheet with one of these inks. You'd get out photo paper / transparency film. And you'd save a lot of money!
But it would also be cool if you could just turn any regular paper into photopaper.
Does anyone know of any mixtures of these chemicals that could improve ink absorption of transparency film or regular printer paper?
This Photo stackexchange post describes some solutions but not how to make them: How can I make my own coatings for handmade paper for inkjet printing?