Tray Section; Paper Size Detection - Konica Minolta bizhub 500 Service Manual

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Theory of Operation Ver. 1.0 Feb. 2006

Tray Section

• Moving the Sub Scan Direction Restriction Plate of the Tray rotates the Circular Plate [1]

provided on the bottom of the Tray.

• The length of paper in the sub scan direction is detected by the Paper Size Detection Switch

[8] provided on the Paper Size Detect Boards /3 and /4 (PSDB3, PSDB49) [7] that is driven

by the Lever interlocked with the Circular Plate.

• The detection of the length of paper in the main scan direction is made by detecting a notch

on the Lever of the Main Scan Direction Restriction Plate by the Paper Size Sensors /Rr3,

/Fr3 (PS118, PS119) [2] or /Rr4, /Fr4 (PS127, PS128) [3].

• The paper size is determined by the combination of the 4 Paper Size Detection Switches

and the 2 Paper Size Sensors.

• The setting of the Tray is detected by the Tray Set Sensors /3, /4 (PS112, PS121) [6].

[1] Circular Plate

[2] Paper Size Sensor /Rr3, /Rr4 (PS118,

[3] Paper Size Sensor /Fr3, /Fr4 (PS119, PS128)

[4] Paper Lift Motor /3, /4 (M124, M125)

[5] Main scan direction size detection

[6] Tray Set Sensor /3, /4 (PS112, PS121)

[7] Paper Size Detect Board /3, /4 (PSDB3,

[8] Paper Size Detection Switch

[9] Sub scan direction size detection

5. OPERATIONS

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