Immediate Transmission - Gestetner A193 Service Manual

VIDEO DATA PATH
Memory Transmission and Parallel Memory Transmission
The base copier's scanner scans the original at the selected resolution in
inch format. The BiCU processes the data and transfers it to the FCU.
Note When scanning a fax original, the BiCU uses the MTF and
Thresholding parameter settings programmed in the scanner bit
switches, not the copier's SP modes.
Then, the FCU converts the data to mm format, and compresses the data in
MMR+raw format to store it in the SAF memory. If image rotation is possible,
the image is rotated in page memory before compression.
At the time of transmission, the FCU decompresses the stored data, then
re-compresses and/or reduces the data if necessary for transmission. Either
the NCU or CiG4 (optional) transmits the data to the line.

Immediate Transmission

The base copier's scanner scans the original at the resolution agreed with
the receiving terminal. The BiCU video processes the data and transfers it to
the FCU.
Note
When scanning a fax original, the BiCU uses the MTF and
Thresholding parameter settings programmed in the scanner bit
switches, not the copier's SP modes.
Then the FCU stores the data in page memory, and compresses the data for
transmission. Either the NCU or CiG4 (optional) transmits the data to the line.
The maximum transmittable page size for immediate transmission varies
depending on the resolution selected and the size of page memory available.
This is becuse the scanned data is stored in the page memory before
transmission, not the SAF memory. Refer to the following table for details.
Width
A4 (210 mm)/
8.5"
B4 (256 mm)/
10.1"
A3 (297 mm)/
11"
SM
Resolution Without optional
Page Memory card
Standard 1200 mm (47.2")
Detail 600 mm (23.6")
Fine
Superfine
Standard 1000 mm (39.4")
Detail 500 mm (19.7")
Fine
Superfine
Standard 800 mm (31.5")
Detail 432 mm (17.0")
Fine
Superfine
1-10
With optional Page
1200 mm (47.2")
1200 mm (47.2")
Not usable 1200 mm (47.2")
Not usable 600 mm (23.6")
1200 mm (47.2")
1200 mm (47.2")
Not usable 1000 mm (47.2")
Not usable 500 mm (19.7")
1200 mm (47.2")
1200 mm (47.2")
Not usable 800 mm (31.5")
Not usable 432 mm (17.0")
Memory card
(A639)