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3 • Theory Of Operation

3.5 Ink System

TIP: The machine does
not perform purges
when it is in the sleep
mode. The machine
does not perform the
72-hour purge until a
print is requested and
72 hours have passed
since the last type A, B
or C purge.
3-28
Table 3-2 Purge Cycles
Purge A (Power ON Purge)
• Suctioned ink: 0.2 - 0.3g
• Suction time: 1.25 sec.
• Movement: suction, wiping and spits.
• When: 72 hours after the last purge A, B, or C, when printing is ini-
tiated.
Purge B (Ink Cartridge Replacement Purge)
• Suctioned ink: 0.75 - 0.9g
• Suction time: 1.25 sec. * 3
• Movement: suction, wiping and spits.
• When: After user replaces ink cartridge.
Purge C (Print Head Replacement Purge)
• Suctioned ink :0.75 - 0.9g
• Suction time: 1.25 sec. * 3
• Movement: suction, wiping and spits.
• When: After user installs a new print head.
• Purpose: Prevent ink type mixing.
Purge D (Jam Purge and Shutdown Purge)
• Movement: wiping and spits.
• When: After a jam error or before machine shutdown; after spitting
45,600,000 dots (total) since the last wiping (purge A, B, C, or D).
• Purpose: To remove paper dust from the print head surface.
Purge E (Pre-, Post-, and during Printing Purge)
• Movement: spits
• Purpose: To prevent nozzles from drying out.
Purge E-1 (Pre-Printing Purge)
Spits: 300 dots per nozzle
Purge E-2 (Post-Printing Purge)
Spits: 100 dots per nozzle
Purge E-3 (While Printing Purge)
Spits: 30 dots per nozzle
Interval: every 30 seconds during the print
Spits area: print position
NOTE: This purge sequence does not interrupt printing.
DM300c/DM400c/DM475 Service Manual (SV61801 Rev. D)

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This manual also for:

Dm400c, Dm475, Dm450c

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