138
Ricoh Co. Ltd.
http://www.ricoh.com/
Model: M-G1a/M-G1b/M-G1L/M-G1W/R-
G1
Machine Codes:
J017/J019/J021/J023/J018
Slide 138
Bypass Tray 4 – Paper Transport
Refer to the notes below for details.
When a print job starts:
The bypass feed motor and feed clutch switch on and start to rotate the shaft of the
pickup roller. (The bypass feed motor drives all the rollers.)
The large cams on both ends of the pickup roller raise the bottom plate [1] and release
the stopper [2] to open the paper feed path.
The rubber friction pad [3] on the bottom plate below the pickup roller [4] provides
enough resistance from below to prevent double-feeding from the tray.
The soft rubber surface of the rotating pickup roller pulls one sheet of paper from the
tray and sends it to the 1st feed roller [5].
J309 only:
¾
The 1st feed roller sends the paper to the de-curl roller [6].
¾
The de-curl roller is raised slightly higher than the other rollers so it presses
against the direction of any curling caused by the pickup roller and 1st feed roller.
This removes flattens the paper and reduces curling.
Once the pickup roller completes its arc of rotation for one sheet, the pawl of the paper
feed clutch locks the pickup roller and then releases it when the next sheet feeds.
The 2nd feed roller [7] feeds the paper to the machine for printing.
This cycle repeats for each sheet of paper fed to the printer.
When the last sheet of paper feeds from the bypass paper tray [8], the bypass paper
end sensor [9] (a photo-sensor) detects paper out and signals the main machine that
the tray is empty.
The machine stops printing and re-starts after more paper is loaded in the bypass tray.
