Tray 1/2 Paper Feed Unit (7255/7272); Composition; Mechanisms - Konica Minolta 7155 Service Manual

TRAY 1/2 PAPER FEED UNIT (7255/7272)

TRAY 1/2 PAPER FEED UNIT (7255/7272)
4

[1] Composition

Pre-registration roller
Paper feed roller
Feed roller
Double feed prevention roller
Caution: Trays 1/2 have the same mechanism.

[2] Mechanisms

Mechanism
Paper lift-up *1
Tray loading
Double feed preven-
tion
1st paper feed
No paper detection
1st paper feed paper
loop mechanism*2
Horizontal convey-
ance (Tray 1)
MODEL
7155/7165/7255/7272
Feed roller Paper feed roller
Side guide
Horizontal conveyance PS/L (PS5)
Horizontal conveyance section
Tray 1
Tray up drive motor /1 (M16)
Method
Up: Driven by wires
Down: Falls down by its
own weight
Front loading
Torque limiter
Paper feed roller
Photosensor + Actuator
Photosensor + Actuator
+ clutch
Horizontal conveyance
roller /L, /R
MANUAL REVISED EDITION
SERVICE MANUAL
Double feed prevention roller
Horizontal conveyance roller/L
Horizontal conveyance PS/R (PS6)
Feed roller
Tray 2
*1 Paper lift-up
a) Hoisting of up/down plate
Paper feed trays are driven by wires. When a
paper tray is loaded, the tray up drive motor/
1(M16)/2(M17) rotates to wind the wires
around the drive pulleys and consequently
the up/down plate in the tray moves up. When
the tray upper limit PS/1(PS2)/2(PS8) detects
the actuator of the roller that has been moved
up by paper, the tray up drive motor/1(M16)/
2 (M17) stops.
DATE
2-J-8
Dec. 2003
4
Horizontal conveyance
roller/R
Pre - registration roller
Paper feed roller
Double feed prevention roller
Tray up drive motor /2(M17)
7272ma2004
PAGE METHOD
2-J-8 ADDITION