Most inks used in copy machines have a disposal warning and may be toxic. Unlike the newspaper ink used for the printed material which is made from ink that won't harm us as we hold the paper to read it. Now the ink used in the adds which make the color pictures are not advisable to use in the compost, My general rule of thumb is to not put in the compost items that could be toxic to animal or plant life.

Bottom line I would not put copier ink in my composter, nor the paper that the ink has been copied on.Just be on the safe side, also when using newspaper you want to shred it pretty small so as not to ball up when wet.mix with other ingredients so it won't stick itself into a ball.

Shredded copy paper is A-OK in your composter. The natural breakdown of the paper and ink is converting it chemically and if well finished, will not harm plants. When you are harvesting compost that used it, sift out any recognizable pieces to re-compost. I avoid composting paper if it is too full of colored ink or solid ink. Most of my copy paper is shredded to make bedding for the worm factory. They do a complete chemical change with everything they eat, which makes vermicompost worry free.

I cannot recommend vermicomposting more highly. I think worms are going to save the world! It is the ultimate GREEN!