Specifications

REV.-A

(6) Wasted ink drain tank replacement operation

In normal use condition, this tank has a sufficient capacity to collect all the ink to be wasted during

the whole printer life. However, if an unexpectedly large amount of ink is wasted in excessive cleaning

operations or power on operations, the tank may be fulfilled. In this case, the wasted ink drain tank

replacement message will be displayed to urge the user to replace the tank. (The tank will be actually

replaced by a service personnel as required by the user.)

The tank overflow condition is estimated in the following method; The total time spent for negative

pressure release operation is stored in terms of “points”in the non-volatile memory

(EEPROM)

on the

Main Board. If the time exceeds the predetermined value (4 1000 points), the replacement message

is displayed. The time spent for ink discharge operation is converted to “point’ ’values at the following

ratio.

2 seconds:

10 points

4 seconds:

23 points

5 seconds:

30 points

7 seconds:

40 points

60 seconds: 400 points

2.1.5 Case Open Interlock Switch

The carriage of this printer moves at a high speed, and the printhead is supplied with a high DC voltage.

To protect the user from the fast moving carriage and high voltage, the interlock switch is installed on

this printer. When the printer cover is opened during the printing operation, the interlock switch is

activated and mechanically cuts off the

printhead

drive voltage to reduce the torque of the carriage

motor by inserting the interlock resistor in series into the carriage motor drive circuit.

Figure 2-36. Interlock Switch

‘.4,”-

2-26