LX-300+/1170 Revision C
Operating Principles Printer Mechanism 50
CARRIAGE HOME POSITION (HP) DETECTOR
The table below is the HP detector specifications.
HP detector detects the signal right after when the CR motor switches the phase.
2.2.2.1 High speed skip method
At no-printing area, the carriage moves at high speed compared to the normal carriage
speed at printing. This is called carriage control.
2.2.3 Ribbon Mechanism
2.2.3.1 Ink Ribbon Shifting Mechanism
Ink ribbon shifting mechanism: CR motor drives timing belt and the timing belt driven
pulley drives the ribbon shifting gears.
2.2.3.2 Color Ribbon Driving Mechanism (Option)
Color ribbon driving is only avilable for LX-300+.
Color ribbon driving mechanism: shifts the color ribbon up and down to change the
color area of the ribbon to be printed.
Color ribbon mechanism consists of the color shift (CS) motor, CS cam, ribbon detector,
CS lever assembly and color cartridge holder. Color ribbon is installed on the color
cartridge holder.
When CS motor revolves, 1) the pinion revolves CS cam, 2) the CS lever assembly on the
CS cam shifts the color cartridge holder up and down and 3) drives ribbon up and down.
Table 2-5. HP detector Specifications
Item Specification
Method Mechanical contact method
Switching rate 0.6to1.0mA,5VD±5%
Switching mode
•outofHP:close
•withinHP:open
Table 2-6. CS Motor Specifications
Item Specification
Motor type 2-phase/48-pole PM stepping motor
Coil resistance 150Ω ±5% (25°C, per 1 phase)
Control method uni-polar rated voltage drive
Phase drive 2-2 phase
Drive voltage 36.75 ± 1.75 VDC
Consuming current
• Operating, peak current: 245 mA
• Non-operating: 20 mA
Drive frequency 500 pps
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