Preservation
Dittoed copies now pose a serious challenge to archivists responsible for historic document and artistic preservation. Dittoed images would gradually fade with exposure to ultraviolet light, limiting their usability for permanent labels and signage. When exposed to direct sunlight, ditto copies could fade to illegibility in less than a month. The low-quality paper often used would yellow and degrade due to residual acid in the untreated pulp. In the worst case, old copies can literally crumble into small particles when handled.
Read more about this topic: Spirit Duplicator
Famous quotes containing the word preservation:
“Is not our role to stand for the one thing which means our own salvation here but with which it will also be possible to save the world, and with which Europe will be able to save itself, namely the preservation of the white man and his state?”
—Hendrik Verwoerd (1901–1966)
“The bourgeois treasures nothing more highly than the self.... And so at the cost of intensity he achieves his own preservation and security. His harvest is a quiet mind which he prefers to being possessed by God, as he prefers comfort to pleasure, convenience to liberty, and a pleasant temperature to that deathly inner consuming fire.”
—Hermann Hesse (1877–1962)
“The preservation of health is a duty. Few seem conscious that there is such a thing as physical morality.”
—Herbert Spencer (1820–1903)