The LaserWriter Pro 810's standard 8MB of memory can only print ledger-sized pages at a maximum resolution of 400 dots-per-inch (dpi). If the printer is set for 800dpi and you try to print ledger-sized documents, the resulting problem you outlined will occur. To print ledger-sized pages at higher resolution, the printer memory needs to be upgraded to 12MB for 600 dpi and 16MB for 800 dpi.
Here's how to print ledger-sized documents at 400 dpi:
1) Select 400 dpi printer resolution for a particular print job.
On a Macintosh computer, follow these steps:
1. Select Print from the File menu to display the Print Dialog box.
2. Click on Options in the Print Dialog box to display the Print Options Dialog box.
3. Select 400 dpi from the Choose Resolutions option.
You can permanently change the LaserWriter Pro 810's default printer resolution by selecting the appropriate resolution in the printer's control panel under the POSTSCRIPT RESOLUTION option.
2) Set the paper size for ledger-size paper, then select the specific paper tray with ledger-sized paper in your printing utilities.
On a Macintosh computer, follow these steps:
1) Select Page Setup from the File menu to display the Page Setup Dialog box.
2) Select Ledger from the Paper option. Click OK to close this dialog box.
3) Select Print from the File menu to display the Print Dialog Box.
4) Select the specific paper tray (Upper, Middle, Lower) that contains ledger-size paper from the Paper Source option.