Input Buffer - Lexmark C752 Technical Reference

Note:

Input Buffer

Your printer has an input (link) buffer for each interface. The maximum size of the input
buffer depends upon the amount of RAM memory installed. The input buffers serve
the same purpose as a print spooler and can be allocated automatically by the printer.
The size of the input buffer may be modified or disabled from the operator panel
menus or through MarkVision Professional.
If NPAP is active on a port, two-thirds of the buffer memory is reserved for NPAP and
one-third is set aside for the input buffer. If NPAP is not active, all the memory is
available for the input buffer.
Table 8-8 shows the sizes automatically selected for the buffers when the buffer size
is set to
Table 8-8: Input Buffer Sizes in Bytes
Memory Size Parallel Buffer Size
2MB 12K
4MB 12K
6MB 24K
8, 10, or 12MB 48K
16, 18, or 20MB 48K (1MB if no optional adapter is installed)
24, 28, 32, or 34MB 192K (1MB if no optional adapter is installed)
36, 38, or 40MB 384K (1MB if no optional adapter is installed)
44MB or larger 2MB
Note: MB represents 1,048,576 bytes. K represents 1024 bytes.
N/A means non-applicable.
Note:
Network capabilities are standard on some printer models. Refer to your
printer user documentation for more information.
in the menus.
Auto
When using serial communication, the printer signals the host computer to
stop transmitting bytes when the serial input buffer is within 640 bytes. In
addition, when XON/XOFF protocol is used, the printer signals the host
computer to stop transmitting when the serial input buffer is 384, 256, and
128 bytes from full.
8-42
Serial Network
Buffer Size Buffer Size LocalTalk
12K 12K 12K
12K 48K 12K
12K 48K 24K
24K 48K 48K
24K 1MB 1MB
150K 1MB 1MB
300K 1MB 1MB
300K 2MB 2MB
Interfaces
USB Fax
12K N/A
12K 350K
12K 350K
24K 350K
24K 1MB
150K 1MB
300K 1MB
300K 1MB