Epson Stylus Photo 950, Service Manual

Page: 31 / 191

EPSON Stylus PHOTO 950 Revision A
OPERATING PRINCIPLES Printer Mechanism 31
When paper is fed from the ASF, the feeding of paper is detected by the PE sensor that
is located on the right side of the top frame, and the leading edge of the paper then
travels as far as the front-center part of the paper guide.
Then, in order to take up any slackness in the paper, the paper is moved back toward
the ASF by a preset number of steps, and it is then transported once more to the
specified starting position inside the front of the paper guide.
When printing starts, the paper is transported by the drive force of the PF roller and the
auxiliary roller. When the bottom edge of the paper (14 mm or more from the bottom
edge of the paper) is being printed and transported, the paper is transported by the drive
force of the paper eject roller and the star wheel roller.
See Figure 2-5 "Paper Feeding Mechanism 2" for details on the paper feed path and the
names of the various parts.
Figure 2-5. Paper Feeding Mechanism 2
2.2.3.2 Manual Feed Mechanism
This printer uses a new method of manually feeding paper from the front of the printer
that enables the printer to print directly onto thicker types of paper and also onto CD-R
labels. The feeding path for the paper that is supplied to the printer in this way pulls the
paper once all the way through the printer from the front to the back in a straight line,
and then returns it to the front of the printer. See Figure 2-6 "Manual Feed Mechanism"
for details on the paper feed path and the names of the various parts.
Figure 2-6. Manual Feed Mechanism
Stylus PHOTO 950
Paper
Star wheel
roller
Platen surface
Printhead
Support roller
Paper eject roller
Bottom margin 3mm
Stable transporting
PF roller
Previous product
Paper
Star wheel roller Platen surface
Printhead
Support roller
ASF
Paper eject roller
Stable transporting
PF roller
Front paper
insertion slot