Oce 3121, Technical & Service Manual

Page: 463 / 908

C
o
nf
id
en
ti
a
l ©
19
98
O
c
é
-T
ec
hn
ol
o
g
ie
s
B
.V
.
ed.1 11 Digital document handling 511
Reading Operations
1
Reading for Memory Transmission
Originals are placed on the glass platen and are read one by one so that multiple
pages may be transmitted. When a feeder is used, on the other hand, multiple
originals set in it are read. An original placed on the glass platen and an original
picked up from the feeder cannot be joined for reading.
2 Reading for Direct Transmission
A single original placed on the glass platen is read in response to a press on the
Start key. If a feeder is used, on the other hand, all multiple originals stacked
in it are read. As in the case of reading for memory transmission, an original
placed on the glass platen and an original picked up by the feeder cannot be
joined for reading.
Memory
The machine is equipped with two types of memory:
■
page memory serving as buffer memory for processing images which have
been read and
■
image memory serving to store coded transmission image data or reception
images.
1 Page Memory
The page memory that comes as standard is as large as 1 MB, capable of stor-
ing an A3 original in Fine. It may be increased by 3 MB (option) to enable the
use of Super Fine and Ultra Fine.
2 Image memory
The image memory that comes as standard is as large as 1 MB and may be in-
creased to 3 MB or 9 MB (option). When the image memory becomes full dur-
ing memory transmission, the mode will automatically switch to direct
transmission. (See “Processing in Case of Memory Full.”)
Scanner
unit
Binary
processing
Resolution
conversion/
Reproduc-
tion ratio
Page
memory
(1MB)
Printer unit
Resolution
conversion/
Reproduc-
tion ratio
Expan-
sion
memory
(3MB)
Coding/
Decod-
ing
Image
memory
(1MB)
Expan-
sion
memory
(3MB or
9MB)
Modem NCU