1) When the document cover is opened (PS2: photopassing) with the system in the standby state, the lamp
lights up, and the optical system moves to the document size reading position. When it reaches this posi-
tion, the lamp goes out and the system returns to the standby state.
2) When the document cover is closed again (after having been opened in the standby state) (PS2: photointer-
rupting), the lamp lights up and the document size is read. When the document size is read, the optical sys-
tem immediately moves to the right and reads the document darkness.
When document darkness reading is complete, the lamp goes out, but the optical system decelerates, then
stops. Following that, the optical system moves left and returns to the home position. The system is then in
the standby state.
3) When the PLATEMAKING key is pressed with the system in the standby state, the lamp lights up and
the system moves to the image reading start position. When it reaches this position, the system stops
momentarily, and the lamp goes out and comes on again, very rapidly. (This happens so rapidly that it can-
not be observed with the naked eye.) Then the scanner moves to the right and reads the image. When
image reading is complete, the lamp goes out, but the optical system decelerates, then stops. Following
that, the optical system moves left and returns to the home position. The system is then on standby for the
printing process.
87
z Scanner Section
chap.2
(1) Sequence of the Scanner Operation
2. Sequence of Operation
Interval Purpose Remarks
STBY / Standby While the optical system is
stopped.
SCFW / Optical system
goes forward.
Until the optical system stops
after it starts to go forward.
It goes forward to move to the
document size reading posi-
tion and to read the document
darkness and image.
Required time and frequency
varies depneding on the paper
setting, R / E or number of
prints per page.
SCRV / Optical system
goes backward.
Until the optical system which
has finished reading the docu-
ment darkness and image
stops after it starts to go back-
ward.
To return the optical system to
the home position.
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