Oce 7050, Техническое и сервисное руководство, Страница: 141 / 275

502 TSM Océ 7050 Functional description
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
2
(20 lbs)
Copy quality parameters for the Océ 7050/7051 are:
1
optical density
2
difference in optical density in copy
3 background variation in O.D.
4
weak / thin line reproduction
5
resolution
6 overexposure of background
7 synchronisation
8
fusing on paper
9
1:1 accuracy
10
image position (leading edge)
11 skewing of the copy
12
loss of information
13
poor copy quality
14 skewing and displacement of original
15
line distortion
For the Océ 7055/7056 we have the above mentioned parameters plus for
roll feed:
16 image position (leading edge)
17
image position (sides)
18
skewing of the copy
19
length of the copy (standard A1)
20
length of the copy (synchro cut)
21 copy length varations during multicopy
22
alignment of cutting
23
squareness of cutting
Optimum copy quality
The product development is aimed at a minimum number of adjustments. As-
pects which are still adjustable are:
■
exposure level
■
original speed (1:1 accuracy)
■
head margin (manual feed and roll feed)
■
toner sensor voltage