HP Designjet T7200

When the main window is open and the printer is printing (safety
compliance)
We describe the details of the behavior of the printer when the window is opened while the carriage is
moving.
If the main window is opened while the printer is doing something, be it a swath of a print job or a system
task, the printer will:
1. Before the carriage stops, it will finish whatever it was doing when the window was opened. It will not
finish an image it was printing, but it will finish the current swath, so as to avoid any impact on image
quality. If it was performing a system task it will finish it before stopping.
2. If the carriage finishes on the left side of the printer, the carriage will always slowly move to the right
side of the printer.
3. The printheads will be placed in their 'capping' positions.
Here are some different scenarios of what happens when the window is opened:
●
If the printer is printing an image when the window is opened: The carriage will not stop immediately,
the printer will finish the swath and then stop. If the cover is then closed, the printer will start to print
from the position it was stopped.
●
If the printer is cutting the media: The carriage finishes the cutting procedure.
●
If the printer is checking the SKEW while loading the media: During the skew check, the printer does
small movements of the carriage on the right side of the printer, and also moves the media when
needed. This procedure checks that the edge of the media is moving laterally or not. If the window is
opened while the printer is checking the media SKEW, the printer will complete the skew procedure (and
it will continue well after the window has been opened). This is the only case when the printer will not
stop the carriage at the end of a lateral movement (as a swath).
The safety system in place is designed to detect an object in the path of the carriage as it moves across the
printer, any object encountered will cause the system to shut down the driver motor in the carriage. This
method of ensuring safety is considered sufficient by the regulatory agencies that inspect and assess the
product prior to its placement in the market. The window and its switch are considered a ‘supplementary’
safety feature, and as such the behavior of the switch has been adjusted as a trade off between the level of
safety provided and the printer’s functionality.
24 Chapter 2 Troubleshooting ENWW