Epson C82314 - Manual (Page 21)

AUTOMATIC PRINT ORIENTATION (APO),
HP EMULATION
When Automatic Print Orientation (APO) is specified active (see Appendix A,
command 61), the coax interface notes the page format parameters of the print
image and calculates the required print dimensions in inches.
The page
calculations are based on the following equations:
Requested Characters per line (MPP)
Print Width = - - - - - - - - - - - - - - - - - - - - - - - - - - -
(in inches) Characters per inch (CPI)
Requested Lines per Page (MPL)
Print Length =
- - - - - - - - - - - - - - - - - -
(in inches) Lines per Inch (LPI)
EXAMPLE:
The printer calculates a 13.2 x 11 .0 inch page size if:
Characters per line = 132
Font = 10 pitch (CPI)
Lines per page = 66
Lines per inch = 6
Because the calculated paper size is larger than 8.5 x 11.0 inches, the
Paper Tray Orientation selection (see Appendix A, Commands 62-64)
determines the orientation of the printing. Reference the following Page
Orientation Logic Illustration.
In LU3 (DSC/DSE) mode, the values of the parameters used in the calculations
are those specified by the interface’s active configuration selections. In LUI (SCS)
mode, the values used are those specified in the data stream by the SCS controls.
If a value has not been set in the SCS data stream, the interface’s active
configuration is used.
Understand that the interface does not supply automatic orientation based on the
amount of incoming data from the host for each line or page. The values must
be provided in the data stream or by use of the printer’s configuration selections.
The Automatic Print Orientation (APO) feature also utilizes the requested print
width and print length as specified above to determine the print orientation when
the print dimensions are less than the 8.5 x 11 inch paper size, When the width
is greater than the length and APO is active, the document prints in landscape
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