| 摘要 |
A system for facilitating remote printing via a network. The system includes a first mechanism for receiving information with respect to the presence of one or more printers connected to the network and selecting an available printer in response thereto. A second mechanism pulls the document from the first mechanism in preparation for printing via the available printer. In the illustrative embodiment, the inventive printing system is adapted for use with Internet appliances and handheld computers. In a specific embodiment, the first mechanism includes a first software module implemented via a client running on the device. The first software module generates a print broadcast to the one or more printers and includes a second software module for responding to the print broadcast via an availability message that indicates the availability status of the one or more printers. The second mechanism includes is adapted to receive the availability message and provide a list of available printers in response thereto. The second mechanism further includes a mechanism for selecting a printer from the available printers based on predetermined selection criteria and providing a selection message to the selected printer in response thereto. The novel design of the present invention is facilitated by the operation of the third mechanism by which a document to be printed is pulled from its source. By pulling rather than pushing the document, various heretofore unforeseen benefits are obtained. In particular, only available printers are able to pull documents to be printed. This prevents devices from printing to offline printers. Furthermore, printer drivers are more readily implemented directly on the printers or intermediate devices, such as websites, rather than directly on the Internet appliances and handheld computers where devices memory is limited. In addition, by implementing messaging between network devices and printers in accordance with the teachings of the present invention, users may efficiently obtain information about printers on a given network without a priori knowledge of the printers.
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