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Tray Full
B804 | When the actuator on the tray activates the upper tray full sensor [H] the tray lift motor [A] switches off. Operation resumes after some copies are removed from the tray. Upper Tray Capacity: 2,000 sheets (A4, LT) |
B805 | The operation of the upper tray full sensor is the same as the B804. Capacity: 1,500 sheets for A3, B4 or other large paper. An additional upper tray full sensor (below sensor [H]) allows more sheets to stack on the upper tray. Capacity: 3,000 sheets (A4, LT) |
2.4.2 LOWER TRAY (B804 ONLY)
The lower tray sensor actuator arm [A] rests on the top of the stack of stapled booklets as they are output to the lower tray. A flap depressor [B] keeps the open ends of the booklets down.
The front lower tray full sensor (S34) [C] and rear lower tray full sensor (S33) [D] detect when the lower tray is full of booklets.
Tray Movement Mechanism
The front lower tray full sensor is mounted higher than the rear lower tray full sensor.
The lower tray is stationary. When it becomes full, the stapling and folding job stops until booklets are removed from the tray.
If the lower tray is not installed (this is detected if the front and rear sensors remain OFF), the machine will not operate in the booklet staple and fold mode. When booklet mode is selected, the tray full message appears on the operation panel.
The combinations of the two actuators and two sensors as the actuator arm rises determines the number of booklets that the lower tray can hold before the job stops.
The tray full detection depends on the size of the paper and the number of sheets in one stapled and folded booklet.
Booklet Finisher & Finishers (B803/B805/ D373/D374/ D636/D637)
Booklet Finisher & Finishers (B803/B805/ D373/D374/ D636/D637)
Booklet Finisher & Finishers (B803/B805/ D373/D374/ D636/D637)
In the table below, the conditions ( Ready Full 1, Full 2 Full 3: See the illustration on the previous page) refer to the states of the sensors described on the previous page.
Condition | Front Sensor | Rear Sensor |
Ready | ON | OFF |
Full 1 | ON | ON |
Full 2 | OFF | ON |
Full 3 (or lower tray not installed) | OFF | OFF |
In the tables below:
"Sht" denotes "sheets in a stack".
"Cnt" denotes "Count" (see below for an explanation).
After a booklet is feed out, the fold roller motor stops the exit roller. The machine then monitors the tray full sensors every 100 ms. The machine checks for a certain condition, based on the size of the paper and the number of sheets in the booklet.
An example is shown below. Tell the operators that the number of sheets that the lower tray can hold will vary greatly.
Tray Movement Mechanism
Lower Tray Full Condition Table A3 (DLT)
1 Sht | 2 Sht | 3 Sht | 4 Sht | 5 Sht | 6 Sht | 7 Sth | 8 Sht | 9 Sht | … | |
Full 1 | 3 Cnt | — | — | — | — | — | — | — | — | … |
Full 2 | — | 5 Cnt | 15 Cnt | — | — | — | — | — | — | … |
Full 3 | — | — | — | 7 Cnt | 13 Cnt | 4 Cnt | 2 Cnt | 2 Cnt | 2 Cnt | … |
A4 (LT)
1 Sht | 2 Sht | 3 Sht | 4 Sht | 5 Sht | 6 Sht | 7 Sth | 8 Sht | 9 Sht | … | |
Full1 | 16 Cnt | — | — | — | — | — | — | — | — | … |
Full 2 | — | 10 Cnt | 10 Cnt | 15 Cnt | 20 Cnt | 15 Cnt | 10 Cnt | 8 Cnt | 8 Cnt | … |
Full 3 | — | — | — | … |
Examples:
After the copier makes a booklet with 1 sheet of A3/DLT paper, the machine checks every 100 ms for the ‘Full 1’ condition. If the Full 1 condition occurs 3 times (shaded block in the table above), the machine detects that the tray is full.
After the copier makes a booklet with 5 sheets of A4/LT paper, the machine checks every 100 ms for the ‘Full 2’ condition. If the Full 2 condition occurs 20 times (shaded block in the table above), the machine detects that the tray is full.