Specifications

Operation Principle
2-15
Ink residual quantity control
Residual quantity of cartridge ink is calculated by subtracting ink consumption quantity obtained by
calculation of number of ink shot times of drawing and flashing and ink suction amount by cleaning and
filling from the ink residual quantity.
When ink residual quantity is updated, writing to the ink IC chip is executed.
A cartridge error is issued according to the residual quantity.
 Calculation of ink consumption quantity
The followings are calculation of ink consumption quantity at drawing, cleaning etc.
a) At drawing and flashing (ink discharging)
Ink consumption quantity at ink discharging is calculated with counting the number of ink shot
times.
b) At cleaning and filling (ink suction)
Ink consumption quantity at each operation is shown in the table below.
 Updating of ink residual quantity
The ink residual quantity is updated at the following timings, and written in the ink IC chip.
In JV33, as each dot size is counted at unit of each nozzle array, Small, Middle, Large, smaller error
between actual measured value and calculated value can be expected.
<Ink consumption quantity at ink suction (with 4-color)>
Type
Ink consumption quantity in 1
supply path [cc]
Soft cleaning 0.3
Normal cleaning 1.16
High power cleaning 5.8
Maintenance filling 13.0
Initial filling
(No replacement)
Main suction 43.0
Cobble filling 4.1
Initial filling
(At replacement)
Main suction 43.0
Cobble filling 4.1
<Ink residual quantity updating timing>
Updating timing Conditions
At pre-capping operation When ink is consumed by drawing or flashing.
Mainly at capping after completion of drawing.
At completion of cleaning and filling operation Ink is consumed by cleaning and filling.
Cartridge residual quantity at using main suction is updated.
When the following events occur at drawing and cleaning or
filling.
Cover OPEN
Lever UP
Media end
Ink consumption quantity until just before the events shown in the
left is updated.
When the following errors occur at drawing.
Cartridge near end
Cartridge ink end
Cartridge error
Updated just after occurrence of the error not waiting for writing
at the capping pre-operation.
Update before replacing of cartridge during the drawing.