Oce 9400-II, User Manual

Page: 37 / 167

Installation of the printer 37
Bitmap buffer
This buffer defines a percentage of the total RAM memory that can be used as
the bitmap partition. This value will be set between two values depending on
the RAM configuration.
The installed RAM can be divided into:
■
bitmap partition
■
processing area for files
The size of the bitmap partition determines the max. length of the image to be
printed on a given paper roll (or manual sheet).
The size of the buffer setting has to be adjusted according to the type of roll
you use and the print length of your file (or original).
There is no need to use a larger Bitmap buffer than required because this may
result in lost of space for the processing area.
The minimum percentage always represents an E+ size. If you never print or
copy files and/or originals that are longer than the E+ length (48”), you have to
setup the minimum Bitmap buffer percentage.
If you print or copy files and/or originals that are longer, then you have to setup
the right Bitmap buffer size.
Use the following formula to determine the percentage setting; (Paper width *
print length * conversion factor) / controller memory configuration.
Conversion factor = 1.08 (width and length in inches)
1.67 E-3 (width and length in mm).
E.g.: you print 70” on a D+ paper and you have 64 MB of memory;
BM% = 24 * 70 * 1.08 / 64 = 29%.
E.g.: you print 6 meters on an A0 paper and you have 128 MB of memory
BM% = 841 * 6000 * 1.67E-3 / 128 = 66%.