Image Quality Is Poor; Nozzle Is Clogged - MIMAKI UJV500-160 Operation Manual

Image quality is poor

This section describes the corrective actions to be taken in case the image quality is not satisfactory.
Take remedy for particular problems with image quality. If the remedy does not work, contact your dealer or an
office of MIMAKI.
Phenomenon
White lines / blur / dark stripes (in the
direction of travel of the heads)
Characters are double- or triple-printed in
the media feed direction
Disagreement in print positions between
outward trip and homeward trip
Ink drops falling on media during printing

Nozzle is clogged

When nozzle clogging is not dissolved even after the head cleaning referring to P.2-32, make sure the following
operations.
 Carry out air ventilation by the operations of P.5-7
 Recovery the nozzle by the operations of P.4-13.
5-4
(1) Execute the head cleaning. (
(2) Perform maintenance of the inside of the station. (
(3) Execute the [MEDIA COMP.] function. (
(4) If any pieces of paper or dust is attached on the path of the
heads such as media press, remove it.
(1) Execute the [MEDIA COMP.] function. (
(1) Execute the [DROP POSITION] function. (
(1) Execute the wiper cleaning. (
(2) Execute the ink cap cleaning. (
(3) Clean around the head. (
(4) Execute the head cleaning [NORMAL]. (
(5) Set a shorter interval of INTERVAL WIPING operation.
( P.3-15)
Measures
P.2-32)
P.2-34)
P.2-34)
P.2-36)
P.4-5)
P.4-5)
P.4-9)
P.2-32)
P.4-5)