Canon iPF720 - imagePROGRAF Color Inkjet Printer, Руководство по обслуживанию

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Chapter 2
2-12
2.2.4 Print Position Adjustment Function
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This printer supports a print position adjustment function to adjust the vertical and horizontal print position and the bidirectional print position of the print head
mounted on the carriage and the feed rate.
Print position adjustment work in two modes: automatic adjustment, in which print position adjustment patterns printed are detected by a multisensor attached to
the lower left part of the carriage, and manual adjustment, in which print position adjustment patterns that are slightly modified from one another are printed, so
that visually verified adjustment values can be set from the operation panel.
To make print position adjustment, A4-or-larger-sized roll media or cut media are needed.
2.2.5 Head Management
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This printer supports a nozzle check function to spot non-discharging nozzles in the printhead. When the printer detects a non-discharging nozzle, it starts cleaning
the printhead automatically to correct its discharge failure. If cleaning does not work, the printer backs up the non-discharging nozzle with an alternative nozzle
automatically to ensure unfailing print performance.
Detection timings (automatic): Power-on, open carriage cover detection, print start (check timing variable by selecting Nozzle Check from the system menu)
2.2.6 Printhead Overheating Protection Control
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When an abnormal temperature rise in the printhead is detected, overtemperature protection control launches.
Overtemperatures could occur in the printhead after a spell of print operations without the nozzles being filled with inks.
Overtemperature protection control prevents non-discharge failures and damages that might result from an overheated printhead.
overtemperature protection control is implemented on the basis of the temperature detected by the head temperature sensor for each nozzle. When an abnormal
temperature is detected in any nozzle train, overtemperature protection control is exerted at one of two levels according to that temperature.
Protection level 1
If the head temperature sensor (DI sensor) has detected a temperature higher than the protection temperature, it halts the carriage temporarily at the scan end position
in the direction of travel according to the carriage scan status.
Printing resumes when the printhead radiates naturally to cool down to below a predetermined temperature or when 30 seconds or longer have elapsed since the
detection of the temperature higher than the protection temperature.
Protection level 2
When the head temperature sensor (DI sensor) has detected an abnormal temperature, the printer shuts down the print operation immediately, moving the carriage
to the home position for capping, with an error indication on the display.
2.2.7 Pause between Pages
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An inter-page function is available to prevent ink rubbing, which keeps paper just printed hanging above the platen and waiting for a predetermined period of time
before delivery.
The wait time is user-programmable from the print driver. This feature is particularly useful on paper that takes time to dry after printing.
A 30-second drying time is set automatically for borderless printing.
2.2.8 White Raster Skip
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This printer supports a white raster skip function to bypass carriage scanning in a consecutive sequence of voids in print data for added throughput.
2.2.9 Sleep Mode
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The printer has sleep mode to save on its standby power requirement.
The printer transitions to sleep mode automatically when it has been left idle or no print data has been received for a predetermined period of time while the printer
is online or offline.
The printer exits sleep mode when any operation panel key is activated or print data is received from the host computer.
The time to transition to sleep mode is variable from the operation panel.
(Default: 5 minutes)