Ricoh FT3013 S DOCUMENT FEEDER 44

DOCUMENT FEEDER

(Machine Code: A662)

24 February 1997 SPECIFICATIONS

1. SPECIFICATIONS

Original Size: Maximum: A3 or 11" x 17"

Minimum: A5 Lengthwise or 51/2" x 81/2"
Original Weight: 52 to 105 g/m2 (14 to 28 lb)
Original Feed: Automatic Feed - ADF mode

Semi-automatic Feed - SADF mode
Original Tray Capacity: 30 sheets - 80 g/m2 (20 lb)
Original Set: Face up, first sheet on top
Original Separation: Feed roller and friction belt
Original Transport: One flat belt
Copying Speed: 15 copies/minute

(A4 lengthwise or 81/2" x 11" lengthwise)
Power Consumption: 45 W
Dimensions (W x D x H): 590 x 443 x 87.5 mm (23.3" x 17.5" x 3.4")

(Not including the original table)
Weight: Approximately 7 kg (15.5 lb)

• Specifications are subject to change without notice.

Option

A662-1

COMPONENT LAYOUT 24 February 1997

2. COMPONENT LAYOUT

2.1 MECHANICAL COMPONENTS

1 2 3 4 65

1. Pulse Generator Disk

2. Friction Belt

3. Pick-up Lever

4. Pick-up Roller

5. Original Table

2.2 ELECTRICAL COMPONENTS

4

5

3

2

1

6

7

8

78910

6. Exit Roller

7. Transport Belt

8. Transport Belt Roller

9. Feed Roller

10. Relay Roller

9

10

11

A662V500.img

12

1. Pick-up Solenoid

2. Registration Sensor

3. Original Set Sensor

4. Feed Clutch

5. Pulse Generator Sensor

6. DF Motor

A662-2

A662V501.img

A662V502.img

7. Insert Original Indicator

8. SADF Indicator

9. Lift Switch

10. DF Main Board

11. DF Transformer

12. DF Interface Board

24 February 1997 ELECTRICAL COMPONENT DESCRIPTIONS

3. ELECTRICAL COMPONENT DESCRIPTIONS

Symbol Name Function Index No.

Motor

M1 DF Motor Drives all the document feeder components. 6

Solenoid

Pick-up Solenoid Energizes to press the pick-up lever against

SOL1

Clutch

CL1

Switch

SW1

Feed Clutch Turns on to transmit main motor rotation to

Lift Switch Informs the CPU when the DF is lifted and

the stack of originals in preparation for
original feed-in.

the feed roller.

also serves as the misfeed reset switch for
the DF.

1

4

9

Option

Sensors

S1

S2

S3

Printed Circuit Board

PCB1 DF Main Board Controls all DF functions. 10
PCB2

Transformer

TR1 DF Transformer Steps down the wall voltage to 25 volts ac. 11

LEDs

LED1

LED2

Pulse Generator
Sensor

Original Set Sensor Informs the copier CPU that originals have

Registration Sensor Sets original stop timing and checks for

DF Interface Board Interfaces between the copier main board

SADF Indicator Informs the operator that the SADF mode is

Insert Original
Indicator

Supplies timing pulses to the DF main board.

been placed and causes the Insert Original
indicator to go out.

original misfeeds.

and the DF.

available.
Turns off when the originals are inserted into

the original table.

5

3

2

12

8

7

A662-3

POWER DISTRIBUTION 24 February 1997

4. POWER DISTRIBUTION

A662D500.wmf

The document feeder uses two dc power levels: +24 volts, and +5 volts.
When the main switch is turned on, the DF transformer receives the wall

outlet ac power through the ac drive board and outputs 25 volts ac to the DF
main board. Then, the dc power supply circuit on the DF main board converts
the 25 volts ac input to +24 volts and +5 volts.

+24 volts is used by the DF motor, the pick-up solenoid, and the feed clutch.
+5 volts is used by other electrical components.

A662-4

24 February 1997 BASIC OPERATION

5. BASIC OPERATION

When the main switch is turned on, the DF CPU sends the "DF installed"
signal to the copier CPU. Receiving this signal, the copier CPU recognizes
that the document feeder is installed and sends the "DF confirmed" signal to
the DF CPU.

When originals are placed on the original table, the Insert Original indicator
turns off and the DF CPU sends the "original set" signal to the copier CPU to
inform that the originals have been set.

When the key is pressed, the copier CPU sends the "feed-in" signal to
the document feeder. On receipt of this signal, the DF CPU energizes the DF
motor, then the pick-up solenoid and feed clutch to feed in the bottom sheet
of the original stack onto the exposure glass. The pick-up solenoid and the
feed clutch remain energized until the original’s leading edge reaches the
registration sensor. The DF motor turns off shortly after the original’s trailing
edge passes the registration sensor. Then, the DF motor pauses and
reverses for a moment to align the edge of the original with the scale.

Option

Then the scanner starts to move (scanner start timing does not depend on
the progress of the original through the DF; it starts at a fixed time after the

key is pressed). When the scanner reaches the return position, the
copier CPU sends the "original change" signal to the DF CPU in order to feed
out the current original and feed in the next original.

A662-5

INTERFACE CIRCUIT 24 February 1997

6. INTERFACE CIRCUIT

A662D509.wmf

The copier CPU and the DF CPU communicate via the interface board using
fiber optics. The interface board changes the optical signals to electrical
signals (and vice versa).

A662-6