HP d640 HP D640 High-Volume Printer - Technical Reference Manual, C5630-90030 - Page 21

LaserJet Compatibility, Paper Input - printer series

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LaserJet Compatibility The D640 printer is unique and different from the Hewlett-Packard LaserJet family of printers in general, and from the LaserJet "Si" series in particular. While these two printer families share the same printer language (PCL and PJL), there are a number of physical differences to their hardware. Hewlett-Packard has included features in the D640 printer to make it behave like a LaserJet 4Si, so your print jobs turn out like you would expect them to if you were printing to a 4Si. In many instances these features also provide compatibility with other LaserJet products such as the IIISi and/or 5Si. This section covers the compatibility features associated with PCL commands. Paper Input The D640 has three paper input trays, while the LaserJet 4Si has two, and the LaserJet5Si has three. The IIISi and 4Si printers have a high-capacity input (HCI) unit available as an option. Jobs set up for this environment use the PCL &l4H command to select the HCI. The same command selects tray2 on the D640. HCI selection compatibility is provided through the HCI-Alias Control Panel setting. HCI-Alias enables paper selection compatibility between a LaserJet IIISi (or 4Si) with an HCI and a D640 with an HCI. With HCI-Alias = tray2 (normally the LaserJet 4Si's high capacity input) the PCL command &l4H causes the D640 to pick paper from the HCI. You can also set HCI-Alias = HCI to pick paper from tray1, tray2, tray3, or the HCI in response to the PCL commands shown in Table 5. Chapter 2: Printing Options 15

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Chapter 2: Printing Options
15
LaserJet Compatibility
The D640 printer is unique and different from the Hewlett-Packard
LaserJet family of printers in general, and from the LaserJet “Si”
series in particular. While these two printer families share the same
printer language (PCL and PJL), there are a number of physical
differences to their hardware.
Hewlett-Packard has included features in the D640 printer to make it
behave like a LaserJet 4Si, so your print jobs turn out like you would
expect them to if you were printing to a 4Si. In many instances these
features also provide compatibility with other LaserJet products such
as the IIISi and/or 5Si.
This section covers the compatibility features associated with PCL
commands.
Paper Input
The D640 has three paper input trays, while the LaserJet 4Si has two,
and the LaserJet5Si has three.
The IIISi and 4Si printers have a high-capacity input (HCI) unit
available as an option. Jobs set up for this environment use the PCL
<ESC>&l4H command to select the HCI. The same command selects
tray2 on the D640.
HCI selection compatibility is provided through the HCI-Alias Control
Panel setting. HCI-Alias enables paper selection compatibility
between a LaserJet IIISi (or 4Si) with an HCI and a D640 with an HCI.
With HCI-Alias = tray2 (normally the LaserJet 4Si’s high capacity
input) the PCL command <ESC>&l4H causes the D640 to pick paper
from the HCI. You can also set HCI-Alias = HCI to pick paper from
tray1, tray2, tray3, or the HCI in response to the PCL commands
shown in Table 5.