Specifications

Operation Principle
2-17
Ink Suction and Discharge Control
Outline of control
 A roller pump (ink suction pump) is used for ink suction and ejection.
 The amount of ink discharged to the waste ink tank is counted by the firmware, and warnings are
issued depending on the level. They are displayed in sequences involving ink suction and discharge, or
locally. ( See About the waste ink tank warning (p.2-6))
 To prevent coagulation of ink in the ejection path tube between the cap and waste tank, there is a
function for cleaning it automatically (pump tube cleaning). Cleaning is performed by drawing
cleaning fluid from the cleaning fluid cartridge to the cap using the siphon principle.
It is performed periodically when the power is turned on/off.
Device configuration
The device configuration of ink suction and discharge is shown in a diagrammatic illustration below.
Fig.2-4 Diagrammed illustration of Ink Suction and Discharge Path
Ink suction pumps
1 washing solution cartridge
1 washing solution PIC
Cartridge PIC
Washing solution cartridge
sensor
Washing solution near end
sensor
1 supply valve
To waste ink tank
Flow of
ink
Head
Cap
Washing
solution
suction
pump
Flow of washing
solutiong
Supply valve
Washing solution cartridge