3.2.2.2 Push-up function of paper tray; 3.2.2.2 Push-up function of paper tray - Page 53

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3.2.2.2  Push-up function of paper tray 

In order to improve the transfer function of the paper tray, the pressure plate in the paper tray is  
lifted up by the motor. 

(1)  The pressure plate comes down while the recording paper tray is inserted into the machine. 

When the main motor rotates, it drives through some gears to actuate the gear 45 arm/FR. 
The driving force that 45 arm/FR received is to be transferred to gear 13 center P/R, it then 
drives through some gears to gear 17. The gear 17 actuates the up plate gear of the recording 
paper tray to push up the pressure plate. 

(2) 

When the pressure plate is pushed up, the paper placed on the pressure plate is contacted with 
the pick up roller holder ASSY so that the pick up roller holder ASSY is pushed up. 

(3) 

When the pick up roller holder ASSY is pushed up more, one end of the link lever assembled 
on the pick up roller holder ASSY is pushed up.  Since the center of the link lever is held as a 
fulcrum, the other end of the link lever comes down. 

(4) 

The other end of the link lever is contacted with the hook B and hook C so that the hook B is 
pushed down when the link lever comes down. 

(5)  When the hook B is pushed down, the catch of the hook B is released from the lock of the 

sector cam. 

(6)  The sector cam is rotated by approximately three quarters when the catch of the hook B is 

released. 

(7) 

Then, the sector cam is stopped rotating by the catch of the hook C.  (The hook B and hook C 
is connected with the spring.  When the hook B is pushed down, the hook C is also pushed 
down, and the catch of the hook C is released from the lock of the sector cam.) 

(8)  When the sector cam is fixed at the position of the catch of the hook C, the hook A is lifted 

up by the sector cam. 

(9) 

The inside gear of the gear 13 center P/R, which has been fixed, is released. 

(10)  When the inside gear of the gear 13 center P/R is released, the central gear of the gear 13 

center P/R is stopped rotating.  Then, the gear pushing up the pressure plate in the paper tray 
is stopped so that the pressure plate is stopped lifting up. 

The gear 13 center P/R consists of the three gears, and power of the main motor is added onto the  
outside gear.  When the inside gear is fixed while the main motor power being added, the central  
gear is started rotating.  When the fixed inside gear is released, the central gear is stopped, and the  
inside gear is rotated.