HP 2500C Series User Manual download pdf (Page 132)

Functional Overview6-12

Paper Paths and Components

Output Transmission

Number Of Teeth

Function S/No Gear Name

Big Small

(1) Gear-Drive roller 80

(2) Gear 1-LF 60 20

Line feed

Transmission

(3) LF Motor Pinion 16

(4) Gear-OP 1 40 27

(5) Gear-Rock 31

(6) Gear-OP2 81

Output

Transmission

(7) Gear-OP 3 81

Diameter of drive roller = 38.808 mm

Diameter of output roller = 19.800mm

Gear ratio of Gear-OP3/LF Motor Pinion = (40/16) * (81/27) = 7.5

Gear ratio of Gear-Drive roller/LF Motor Pinion = (60/16)*(80/20) = 15

Gear ratio of Line feed/Output wrt. LF motor = 15/7.5

Linear velocity of output roller/ Linear velocity of drive roller

= (15/7.5) *(19.8/38.808) = 1.02

Hence the linear velocity of output roller is 2% faster than drive roller.

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HP 2500C Series User Manual Page 132