Immediate Transmission; Jbig Transmission - Ricoh B230 Service Manual

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Video Data Path

and/or reduces the data if necessary for transmission. The NCU transmits the data to the

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.

When scanning a fax original, the BICU uses the MTF, independent dot erase and

thresholding parameter settings programmed in the fax unit's scanner bit switches,

not the copier's SP modes.

Then the FCU stores the data in page memory, and compresses the data for transmission.

The NCU transmits the data to the line.

Memory transmission: If the receiver has JBIG compression, the data goes from the

DCR to the QM-Coder. Then the NCU transmits the data to the line. When an optional

G3 unit (SG3) is installed and PSTN2 is selected as the line type, JBIG compression

is available, but only for the PSTN-2 line.

Immediate transmission: If the receiver has JBIG compression, the data goes from

the page memory to the QM-Coder. Then the NCU transmits the data to the line.

When an optional G3 unit (SG3) is installed and PSTN2 is selected as the line type,

JBIG compression is available, but only for the PSTN-2 line.

Priority for the line used for G3 transmissions (PSTN 1/PSTN 2 or 3): System switch 16 bit

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