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D.2 Printable Area Compatibility
The printable area on the DEClaser 2100 is approximately the same as
the printable area on the LN03 printer. There is an approximate ¼" non-
printable area around the page.
This difference does not affect applications using the predefined Page
Format Selections (PFS) or applications that do not print within ¼" of the
paper edge. When the LN03 printer encounters a character that exceeds
the printable area, it attempts (in some instances) to shift the character so
that it falls within the printable area. The DEClaser 2100 printer does not
image any characters that exceed the printable area. This results in lost
characters.
D.3 Protocol Compatibility
The following list contains protocol compatibility issues between the LN03
printer and the DEClaser 2100 printer.
• The LN03 rounds a relative motion of 1 decipoint down to a relative
motion of 0, causing cumulative errors; the DEClaser 2100 printer
keeps its position accurately. This produces a side effect when a relative
motion of 0 is interpreted as a relative motion of 1 by both devices when
using decipoints. This leads to 0 motion on the LN03, and a 1 decipoint
motion on the DEClaser 2100.
• When trying to image past the bottom margin, the LN03 does not
always wrap. Wrapping depends on the glyph shape and the line
spacing. For example ‘‘j’’ may print but ‘‘a’’ may not. The DEClaser
2100 always wraps if the character box crosses the bottom margin, even
though the character may not have a descender. This ensures that all
characters either print, or all characters wrap, to the next page.
• You should use the level 3 device identification for the DEClaser 2100
when possible. This allows the software to be compatible with any
future devices.
Some applications, such as DECmate, require you to set up the
printer to respond as an LN03 printer. When the device identification
is set to LN03, it responds as a base model LN03, not an LN03
PLUS, even though it may have sufficient memory for a full bitmap.
See Section 4.5.5.1 for additional information about the device
identification.
• The DEClaser 2100 does not support Tektronix mode; the LN03 PLUS
does.
D–2 DEClaser 2100 Printer Operator’s Guide