| 摘要 |
<p>A low cost, high speed, high resolution laser printer method and apparatus for re-writable media is presented. Three aspects are presented: 1) a bi-stable, microencapsulated colorant and surface coating therefore for producing an electric field writable and erasable medium-such as paper or a paper-like display, 2) an electrophotographic printer that is capable of conventional toner-based printing and re-writable "paper" printing and 3) a greatly simplified electrophotographic printer that is dedicated to printing re-writable media. The printer embodiments are based on conventional low cost laser printer designs, and have significant advantages in product cost, printing resolution and speed over the electrode array printer. A laser scanner is used to writably erase the uniform, high voltage charge deposited on the surface of a photoconductor drum or belt. When the re-writable paper is brought in contact with the charge written photoconductor through a biased back electrode roller, fields generated between the photoconductor and back electrode cause orientation of the colorant within the microcapsules to develop the desired print image.</p> |
