Crystal balls

Tony Bond's letter (, 19 May) gives an interesting insight into the processes and understanding that goes into the development of a product such as photographic paper. Last year IDursley, and the Permajet representative talked about the different fibre bases and coatings of various paper types for use with inkjet printers, and how the ink penetrated the coatings into the fibre base. In addition he spoke about the importance of using acid-free paper and boxes for long-term storage because many other products produce gases that degrade prints over time. This gave everyone an insight into the understanding behind the development of modern print papers.