Ricoh DD 5450, Руководство по обслуживанию на месте, Страница: 147 / 403

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145
Chapter 3 Press Section
260
t
10mm
70
10 15
310 ( 270 )
41
mm
428 mm
438 mm
423 mm 370 mm
370 mm
355 mm
5 Press Section
1. Description
In this machine, the master is rolled up to the
drum, ink is transferred to the drum and the
printing paper is pressed to the drum by the
press roller to print.
Printing is performed on only the sections
that meet the following requirements.
The printing area is checked with the test
patter 4 in HELP-030.
● Master making area: the sections of
the master on which holes are made by
processing master making.
● The hole sections of the drum
● The area pressed ON: the section of the
drum pressed with the press roller.
290(250)
DD5440 DD5450
Cam
Drum gear
Press lever
Press roller sensor
Cancel lever-1
Cancel lever-2
Paper
Signal solenoid
Emergency signal solenoid
Press roller
Contact pressure
unit
(1) Press Roller Timing & Printing
Rear edge of
the hole section
Drum hole section:
438(370)
Center of the master
clamp shaft
Press OFF
Printing area: 423(355)
Press area: 428(360)
Press ON
( ): DD5440
Press ON length
Drum hole section length
Printing area length
5