SMALLER TRAILING-EDGE MARGIN
Like the Stylus COLOR 740, this model uses a new design to allow printing up to the
last 3mm by changing the design and position of the star-wheel gear. The star-wheel
gear assembly has been shifted 5degrees from directly on top of the eject rollers
towards the front paper guide. This change suppresses the tailing edge of the paper so
that the old margin of 14mm has been reduced to only 3mm.
Figure 2-10. 3mm improved margin (viewed from right side)
CARRIAGE LOCK MECHANISM
The carriage lock mechanism prevents the carriage from being left at an uncapped
position for a long time which can occur due to user mistakes, physical shock, vibration
during transport, and so on. The CR lock mechanism is driven by the stepping PF
motor. See Table2-5, “PF Motor Specifications,” on page35 for motor specifications.
The PF motor controls the CR lock mechanism as well as the PF mechanism depending
on the direction of the PF motor rotation. The CR lock mechanism is located at the
right end of the paper eject roller.
Figure 2-11. CR Lock Mechanism
While the PF motor drive is used for paper feeding (PF motor rotation = CCW), the CR
Lock Lever is set under the Paper Eject Frame. But the CR Lock lever rises up and
locks the carriage when the PF motor rotates CW.
The PF motor drive is sent to the CR Lock lever via the Paper Eject roller.
PF Motor pinion gear (CW rotation) → Gear 73.6 → Combination gear → Gear 28 →
Paper Eject Roller → CR Lock Lever
This area remains
stable
Old Feeding
Method
New Feeding
Method (from
COLOR 740)
Paper
Star wheel
Assembly
Printhead Support roller
Eject rollers
Platen
PF roller
3mm bottom margin may
contact printhead
Moved to a 5
degree angle
Pump Planetary
Lever
CR Lock
Lever
Pump
Planetary
Lever Guide
Bushing 6
Paper Eject
roller
Middle frame
Carriage
Right-side view
Top view
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