| Using the PCL Driver |
Overlays | A Page Overlay is a partial document that the driver can |
| merge with your print job, producing a printed image that |
| includes elements of both the overlay and your |
| document. Overlays are most useful for creating such |
| things as company letterhead. You can create the |
| letterhead in your application as a page overlay, then |
| download it and store it in the printer. Whenever you |
| want to print a document with the overlay, you just send |
| the print job to the printer with the Overlay command, |
| and the printer will automatically print the letterhead on |
| each page of your document. Page overlays eliminate the |
| need to download the same information more than once, |
| thus saving transmission time. However, they do use up |
| printer memory or disk space. |
| An overlay differs from a watermark in these respects: |
| • An overlay can contain graphics and text in any |
| number of fonts in any number of sizes and colors. A |
| watermark can contain only text of one font, one size |
| and one color. |
| • An overlay is usually on the margins of a page, while a |
| watermark is usually in the middle of a page. |
| • An overlay usually will not obscure any part of the |
| document, but a watermark usually will. |
| • An overlay uses space on the printer's hard disk, but a |
| watermark does not. |
