How To Adjust The Weight Of Feeding/ Take-Up Tension-Bar (Cloth Media) - MIMAKI Tx300P-1800 Operation Manual

How to adjust the weight of feeding/ take-up tension-bar (cloth media)

There are various types of media of different size of string and different texture. Further, even with the same media, their
stretching characteristics may vary due to differences in their pre-treatment process. For such a wide variety of media, in
order to print to the relevant type of media by applying appropriate tension for it, you must adjust the weight of feeding/
take-up tension bar and the mounting position of the folding bar by using counter weight and weight adjustment spring.
● About counter weight and weight adjustment spring
Depending on the attaching position of the counter weight and the weight adjustment spring, you can adjust the tension
bar weight.
You can attach the counter weight up to 12 each for right and left (Large: 2, Small: 10).
Media front surface at setting
The print surface tightens.
Surface waviness has occurs
on the media and the printing
surface comes down.
As the media is pulled too
much, ruck partially occurs
between the pinch rollers etc.
About counter weight
• Counter weight is not attached to this machine when you purchase the product.
• The maximum weight for weights to be attached to one place is 700 g
Check the tension of the media and attach an appropriate number of weights.
• By changing where to attach counter weight is not attached to this machine when you purchase the product.
The maximum weight for weights to be attached to one place is 700 g (large: 100 g x 2 sheets, small: 50 g x 10 sheets),
you can change the weight of tension bar.
• If the same amount of weight is put on the upper side or the lower side, counter weight is heavier when that amount of
weight is put on the upper side.
Counter weight is put at four points in total: two points on the feeding side (left and right) and two points on the take-up side
(left and right). Put weights in such a way that the weight at each of the four points becomes the same. If it is not the same,
tension bar may bend and print quality may become worse.
• Not to lose the unused counter weight, put it in the storage box.
About weight adjustment spring
• A green spring is attached when you purchase the product. You can change the weight of tension bar by changing the
spring type or removing the spring.
• Weight adjustment spring can be adjusted at four points in total: two points on the feeding side (left and right) and two
points on the take-up side (left and right). For the strength for weight adjustment spring, set the same value at each of the
four points. If the strength is not the same, tension bar may bend and print quality may become worse.
• Wear gloves to replace or remove weight adjustment spring. The shaft to which the spring is attached is coated with
grease. Do not wipe off grease coating the shaft.
How to adjust tension bar
(1) Adjust the weight of tension bar by changing weight adjustment spring.
(2) If tension bar is too light in weight, add counter weight. If tension bar is too heavy, remove a weight.
• To increase the weight, we recommend changing it a little by little.
• Not to lose the unused weight adjustment spring, put it in the storage box.
• The correlation diagram between counter weight and weight adjustment spring is shown as below. Use it
as reference.
Without spring Upper-side mounted
Lower-side mounted
Spring (Green) Upper-side mounted
Lower-side mounted
Spring (Blue) Upper-side mounted
Lower-side mounted
• Attach the counter weight and weight adjustment spring after adjusting the media feeding correction amount in P.2-31
"Feed settings".
Phenomenon
At printing
Stable printing can be
performed.
The media flops at printing.
The tension bar bends and
ruck occurs on the media or
the media skews.
Weight of attached weights (one side)
Print result
Surface waviness or ruck on
the media is hardly found.
As the print surface comes
down, printing cannot be
performed with the proper
head height. Therefore, the
printing quality deteriorates.
Ruck occurs on the media
may hit the head, and it may
cause the media jam or the
damage of the head.
Tension bar weight [N]
Chapter 2 Basic Operation
Countermeasure
The tension is suited for the media. It
is not required to adjust the counter
weight.
The tension applied on the media is
too weak.
Make the tension bar heavier.
The tension applied on the media is
too strong.
Lighten the tension bar.
2
2
2
5
6
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