Epson LX-1170, Service Manual

Page: 51 / 129

LX-300+/1170 Revision C
Operating Principles Printer Mechanism 51
Figure 2-4. Color Ribbon Driving Mechanism
RIBBON CARTRIDGE DETECTOR
Ribbon detector detects if the color ribbon is installed or not.
o
Detect Timing
n
When the power is applied.
n
When recovering from the economy mode.
n
When the printing is started.
AVOID COLOR FROM MIXING
To avoid the color area on the ribbon from mixing up each other or minimize the color
mixing up, the printing is done by the following order when printing green, violet and
orange.
Color ribbon drive circuit
CS lever assembly
Ribbon detector
CS cam
CS motor
CS lever assembly
Color ribbon
Color cartridge holder
CS motor, pinion
CS cam
Black
Cyan
Magenta
Yellow
Table 2-7. Ribbon Detector Specifications
Item Specification
Method Mechanical contact method
Switching rate 0.6 to 1.0 mA
Switching mode
• Color ribbon cartridge is installed: High
• Black ribbon cartridge is installed or
ribbon is not installed: Low
Table 2-8. Color Printing Order
Color First color Second color
Green Yellow Cyan
Orange Yellow Magenta
Violet Magenta Cyan