Learn each control and mechanism. Multiple Manual Feed Block Feeds printing paper from the multiple manual feed tray.

2. Multiple Manual Feed Block

The multiple manual feed block feeds printing paper from the multiple manual feed tray into the machine.

On the multiple manual feed paper tray, the middle plate is always pressing printing paper against the multiple manual feed roller. At paper feed, the multiple manual feed roller rotates to feed the printing paper and the separation pad sends only one sheet to the resist roller.

The configuration of this block is explained with controls and functions below.

　

  

1] Upper guide 　 [2] Stopper plate 　 [3] Side guide 　 [4] Multiple manual feed tray 　 [5] Pressure spring 　 [6] Middle plate 　 [7] Multiple manual feed paper detection sensor flag 　 [8] Separation pad 　 [9] Multiple manual feed roller 　 [10] (To the resist roller section)

　

　

No. Name Description Details a Paper size detection Detects the size of printing paper loaded on the manual feed tray b Paper pressing mechanism Presses printing paper against the multiple manual feed roller. c Multi-feed prevention mechanism Removes multi-fed printing paper by friction with the separation pad. -

　

The control and function of each section are explained below.

a. Paper size detection

This machine can detect the size of printing paper loaded on the multiple manual feed tray.

For the paper size detection, the DC controller monitors output from the variable resistor (multiple manual feed tray paper detection sensor SVR1).

SVR1 is interlocked with the side guide and indicates the paper size when the side guide is aligned with paper loaded on the multiple manual feed. From the paper width value output by SVR1, the DC controller detects the size of paper loaded on the multiple manual feed tray.

1] Side guide (Inside) 　 [2] Resistance arm 　 [3] Central gear 　 [4] Side guide (Front) 　 [5] Variable resistor (SVR1) 　 [6] Manual feed tray

　

　

b. Paper pressing mechanism

This mechanism presses the multiple manual feed roller against printing paper on the multiple manual feed tray.

For high-speed printing, the multiple manual feed system of this machine always keeps pressing the middle plate against the multiple manual feed roller, instead of lifting and lowering the middle plate for each sheet.

When printing paper is loaded and the upper guide is closed, the middle plate goes up and presses the printing paper against the multiple manual feed roller. The pressure on the printing paper is maintained.

The upper guide has a stopper plate to disable the user to load paper without opening the upper guide.

　

[1] Upper guide closed

1] Multiple manual feed roller

　

[2] Upper guide

　

[3] Printing paper

　

[4] Stopper plate

　

[5] Link

　

[6] Middle plate

　

[2] Upper guide open

Paper can be inserted between the multiple manual feed roller and the middle plate.

[3] Upper guide closed again

When printing paper is loaded and the upper guide is closed, the middle plate goes up and presses the printing paper against the multiple manual feed roller.