Loading

Guidelines to maintain the print quality

Introduction

To keep the printer in optimal condition it is very important to perform printhead and system maintenance regularly. Next to that, this maintenance can be performed at any time to solve quality problems, or after paper jams and crashes.

You can start the maintenance from the operator panel. There are three different ways to perform maintenance:

NOTE

Automatic, manual and periodic maintenance use a more intense purge and wipe to clean the nozzles, which consumes more ink than the purge and wipes taking place during operation .

Maintenance videos

The maintenance actions are explained in separate maintenance procedure videos, click here to visit or scan the following QR code.

Table 1. Overview of detailed maintenance actions to maintain the print quality

Maintenance action

Link to the video

Guidelines to Maintain the Print Quality

Click here to view

Automatic Nozzle Optimization

Click here to view

Clean the Nozzles

Click here to view

Clean the Maintenance Station

Click here to view

Clean the Matrix Plate

Click here to view

Clean the Platen

Click here to view

Vacuum the Chiller

Click here to view

Clean the Mirrors

Click here to view

Clean the M&C Scanner

Click here to view

Clean the Printhead Area

Click here to view

Clean the buffer plate

Click here to view

Automatic maintenance

This is the shortest of the three maintenance procedures. Automatic maintenance is performed fully by the printer, the operator only has to start the procedure. Always start with automatic maintenance first in case of print quality problems.

Initiated by

Performed by

Action

Operator

Printer

  1. The printer performs a purge and wipe to clean the nozzles.

You can select the option [Automatic nozzle optimization].

The actions above are explained in separate maintenance procedure videos, click here to visit.

Manual maintenance

When automatic maintenance has not worked sufficiently then start manual maintenance in case of print quality problems. Manual maintenance is mainly done by the operator. Compared to automatic maintenance it contains four additional optional actions. These additional actions of manual maintenance are, clean the maintenance station, clean the matrix plate, clean the M&C scanner, clean the platen and clean the buffer plate. You can also start manual maintenance in case of a paper jam or crash. For more information, see Improve quality.

IMPORTANT

You must clean the matrix plate once a week to guarantee the print quality.

Table 2. Every week

Initiated by

Performed by

Action

Operator

Printer and operator

  1. The operator can clean the matrix plate.

Table 3. Incident-based (quality problems, paper jam, crash)

Initiated by

Performed by

Action

Operator

Printer and operator

  1. The operator can clean the maintenance station, including the wiper and clean wall.

  2. The operator can clean the matrix plate.

  3. The operator can clean the M&C scanner.

  4. The operator can clean the platen.

  5. The operator can clean the buffer plate.

The printer performs a purge and wipe to clean the nozzles.

You can select the option [Automatic nozzle optimization].

The actions above are explained in separate maintenance procedure videos, click here to visit.

Periodic maintenance

Periodic maintenance is a variety of mandatory maintenance actions that have to be performed by the operator. Periodic maintenance has to be done once a month. The operator panel gives a warning.

Compared to manual maintenance, it contains two additional steps which need to be performed by the operator. These additional steps are, vacuum the chiller and clean the ink unit.

IMPORTANT

You must perform all periodic maintenance once a month (or otherwise specified) when indicated, to guarantee the print quality.

Initiated by

Performed by

Action

Printer

Printer and operator

  1. The operator must clean the maintenance station, including the wiper and clean wall.

  2. The operator must clean the matrix plate and black protection cover.

  3. The operator must clean the mirrors.

  4. The operator must clean the M&C scanner.

  5. The operator must clean the platen.

  6. The operator must clean the buffer plate.

  7. The operator must vacuum the chiller.

  8. The operator can clean the ink unit (if necessary).

The printer performs a purge and wipe to clean the nozzles.

You can select the option [Automatic nozzle optimization].

The actions above are explained in separate maintenance procedure videos, click here to visit.

For more information on how to start automatic, manual and periodic maintenance, see Start automatic maintenance, Start manual maintenance, Start periodic maintenance.

Clean the nozzles by purge and wipe

In all three maintenance procedures the nozzles are cleaned by a purge and wipe action. During the purge actions every nozzle is refilled with new ink. The old ink including any pollution will be pushed out to the printhead nozzle plate. Next a wiper removes the ink including the nozzle pollution from the nozzle plate. This results in an optimally cleaned printhead.

Automatic nozzle optimization

In all three maintenance procedures you can select the option [Automatic nozzle optimization].

During printing the system uses a mechanism called PAINt, to check if all nozzles are functioning. If a nozzle is detected as fail, PAINt will compensate this failing nozzle by a good working nozzle. PAINt can detect the majority of the causes for a failing nozzle during the print.

When you enable [Automatic nozzle optimization] the printer will create a test print on which each individual nozzle will print a pattern. A camera will scan the printed pattern. If the camera detects a missing pattern and PAINt did not detect this nozzle as failing, the nozzle will be switched off permanently. The failing nozzle is compensated by another nozzle for all print jobs, which results in an optimum print quality.

Use a smooth, white, opaque, non-reflective media when you select Automatic nozzle optimization.