Ricoh Martini-C3.5 Technisch bulletin

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Model: Martini-C3
Subject:
Differences between the MT-C3.5 and MT-C3
From:
2nd Tech Support Sec. Service Support Dept.
Classification:
Differences between the MT-C3.5 and MT-C3
Overview
The MT-C3.5 (D052/D053/D054) is basically the MT-C3 with some minor changes applied.
The mechanical parts, controller, and machine layout are the same. There are only four
differences, which are listed below:
1. CPM
Each version of the MT-C3.5 is five copies/minute faster than its MT-C3 predecessor. This
was achieved not by increasing the printing speed, but by reducing the paper interval
(firmware modification).
The following table shows the paper intervals when continuously printing A4/LT-LEF
sheets on each model, along with their printing speeds:
CPM
Type a
55
Type b
65
Type c
75
2. Cleaning brush rotation speed
The number of rotations is the same on the MT-C3.5a/b, but on the MT-C3.5c, the rotation
speed was increased by 50%. This was in order to prevent blurred images caused by OPC
filming. As a result, the brush can more easily wipe foreign particles off the drum surface.
The increase in speed was achieved by modifying the mainframe gears (MT-C3.5 Parts
Catalog, pg. 121, items 14 and 16).
Note: The differences between the mainframe gears on the MT-C3.5a/b and MT-C3.5c
are the color and P/N.
-
MT-C3a/b/c, C3.5a/b: Black
-
MT-C3.5c:
T
echnical
Troubleshooting
Mechanical
Paper path
Product Safety
MT-C3
Printing
Paper interval
speed
(A4/LT)
270mm/sec
81.9/75.9mm
362mm/sec 121.6/115.6mm
362mm/sec
77.7/71.7mm
White
B
ulletin
Date:
29-Jan-08
Prepared by:
Part information
Electrical
Transmit/receive
Other (
)
Printing
CPM
speed
60
270mm/sec
70
362mm/sec
80
362mm/sec
AB011482, AB017640
AB011507, AB017760
PAGE: 1/3
No.:
RB246026
S. Watanabe
Action required
Service manual revision
Retrofit information
MT-C3.5
Paper interval
(A4/LT)
57.8/57.5mm
98.1/92.1mm
59.8/53.8mm