HP Designjet Universal Print Driver Bedienungsanleitung PDF herunterladen (Seite 146)

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Frequently Asked Questions

1. For non-permanent instance installations of the HP UPD, will the printer be queried every time?

For cases where a user has chosen to create a permanent instance of a printer, settings are permanently saved

to the local registry (like any other print driver) and the user would continue to print to that permanently created

instance. For cases where a user has not chosen to create a permanent instance of a driver, registry entries are

saved in a .CREG file (cached registry). Initially the driver will attempt to save the CREG files to the "C:\Program

Files\Hewlett-Packard\HP Universal Printing" directory. If that directory is not available or is locked, the driver will

attempt to cache settings in the %TEMP% then %TMP% directories. If neither of these directories are available

then the HP UPD will query the printer every time for non-permanent instances.

2. How does enabling or disabling the Microsoft port Enable bidirectional support impact the HP UPD's

bidirectional communication?

Figure 7-44 Enabling bidirectional support

The HP UPD uses the MS port’s bidirectional communication for basic status level related to print spooler

operations such as Printer Online and Paper Out. However, for product configuration and capabilities, the HP

UPD uses its own installed services for bidirectional communication between the HP UPD and the target product

(NET DRIVER HPZ12 and PML DRIVER HPZ12).

3. Does HP UPD Printer Auto configuration bidirectional communication cause slow print performance?

No, the traffic send/receive response is very small (SNMP around 65 kilobytes) and infrequent. For traditional

mode installation, the HP UPD only queries for printer information at time of installation, when executed through

Update Now or RUNDLL32 at the HP UPD installed client, and for a simple change id at the beginning of Printer

Automatic Configuration job to verify that the configuration has not changed.

4. After the PRINTER AUTOMATIC CONFIGURATION has completed a successful bidirectional update, several

device features appear in the HP UPD driver user interface that my device does not support. For example, why

does the DEVICE SETTINGS tab show "Tray X: Not Installed" for several trays (where “X” is the tray number)?

The settings are place holders for the HP UPD. Because the HP UPD does not know before an Automatic or Pre-

configuration of the driver's exact configuration, the HP UPD UI structure must remain capable of displaying

settings beyond the standard default settings in the HP UPD UI design. By preserving the setting locations, after

completing the Printer Automatic Configuration update, the user interface can dynamically update the "Not

Installed" settings to the current configuration when a change has occurred to configuration of the device.

5. Print Properties-Device Settings-Installable Options, the Automatic Configuration option is grayed out and

unavailable for selection. What could be the cause?

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HP Designjet Universal Print Driver Bedienungsanleitung Seite 146