Previous Page | Next Page Contents Glossary Index Specifications > Printer Resolution >

480/600 Switchable Resolution

Selecting printhead resolution

Printer Definition -> Printer -> Basic -> Printhead Resolution

With a switchable printhead, you will need operator instructions on when and how to switch between the two different resolutions. If all your jobs are developed at a single DPI(R), for example 240 DPI, you may want to keep the printer at 480 DPI resolution all the time.

However, if you have some jobs for 240 DPI and some for 600 DPI, you will need to have some way of separating the jobs by resolution and of notifying the operator when to change the resolution on the printer. This change is done from the touchscreen by selecting the Printer Definition tab and proceeding through the definition steps.. The printer normally takes less than a minute to complete this operation. Switching printer resolution involves switching the raster font libraries.

In 480 DPI resolution, the printer reports to PSF that it is a 240 DPI printer. It accepts 240 DPI raster fonts and automatically scales them to 480 DPI. From an operational and application standpoint, it is no different than a 240 DPI switchable printer.

Note that there are no 480 DPI raster fonts supplied by IBM(R), nor does IBM recommend that you create or use 480 DPI raster fonts. You should use only 240 DPI raster fonts or outline fonts with 480 DPI printhead resolution. 300 dpi raster fonts are best supported when printing in 600 dpi resolution (Infoprint 4100 models only).

With 480/600 switchable printheads, IBM recommends that jobs that use 240 DPI raster fonts be printed with the 480 DPI printhead, rather than with the 600 DPI printhead. Because scaling 240 to 480 DPI is a simple matter of doubling the dots, both appearance and performance of 240 DPI jobs may be better at 480 DPI resolution than at 600 DPI.

When the printer is in 600 DPI mode, you have a new capability: the option to specify IPDS(TM) Resolution mode.