Oce 7050 Technical & Service Manual page 141

2 The service test original
The service test original (code no. 0831382), has been developed to check
whether the copy quality is within specification and for diagnosing the cause
of copy quality problems in the Océ 7050 / 7055 model series. Copies must be
made on standard Océ plain paper 75 gr /m
Copy quality parameters for the Océ 7050/7051 are:
optical density
1
difference in optical density in copy
2
background variation in O.D.
3
weak / thin line reproduction
4
resolution
5
overexposure of background
6
synchronisation
7
fusing on paper
8
1:1 accuracy
9
image position (leading edge)
10
skewing of the copy
11
loss of information
12
poor copy quality
13
skewing and displacement of original
14
line distortion
15
For the Océ 7055/7056 we have the above mentioned parameters plus for
roll feed:
image position (leading edge)
16
image position (sides)
17
skewing of the copy
18
length of the copy (standard A1)
19
length of the copy (synchro cut)
20
copy length varations during multicopy
21
alignment of cutting
22
squareness of cutting
23
Optimum copy quality
The product development is aimed at a minimum number of adjustments. As-
pects which are still adjustable are:
exposure level
I
original speed (1:1 accuracy)
I
head margin (manual feed and roll feed)
I
toner sensor voltage
I
502 TSM Océ 7050
2
(20 lbs)
Functional description