Scientists have made a water jet printer

Scientists from China have created a water jet printer. Instead of the old ink jet printer water jet could replace them soon in the future. They were able to make the paper reusable. They coated regular paper with PEG or polyethylene glycol numerous times to make the paper reusable if needed. They would spray the paper with the desired shape of the letter with water and it would stay completely readable for up to 22 hours and then when it is needed to be erased, it should be heated at 70 degrees Celsius and it would be made completely clear so it could be reused. 


this is what the color would consist of to make the color that is shown above. This picture shows the chemical make up of the color. This relates to chemistry because it shows the chemical make up of the dyes used to color the paper. I never knew that this was possible this could be very revolutionary if the time to read the dye stayed longer (which they are working on) When i need to hand in my papers i could possibly use this to write it and then would be able to erase it so that i can reuse the same piece of paper.



http://www.rsc.org/chemistryworld/2014/01/waterjet-printer-rewriteable-paper-set-make-splash