Ricoh RT34 SPECIFICATIONS

LARGE CAPACITY TRAY

(Machine Code: A609)

15 July 1996 SPECIFICATIONS

1. SPECIFICATIONS

Copy Paper Size: A4 sideways

B5 Sideways

1/2

" x 11" sideways

Copy Paper Weight: 64 ~ 105 g/m Power Source: DC24 V, 5V (from the copier) Power Consumption: 48 W Dimensions (W x D x H ): 403 x 529 x 608 mm

(15.9" x 20.9" x 24.0") Weight: 19.8 kg (43.7 lb) Tray Capacity: 3,500 sheets (may vary slightly depending on

paper weight)

16~24 lb

Large

Capacity Tray

MECHANICAL COMPONENT LAYOUT 15 July 1996

2. MECHANICAL COMPONENT LAYOUT

A609V500.wmf

1. Bottom Plate

2. Tray Drive Belt

3. Separation Roller

4. Transport Rollers

5. Feed Roller

6. Pick-up Roller

15 July 1996 ELECTRICAL COMPONENT DESCRIPTION

3. ELECTRICAL COMPONENT DESCRIPTION

Symbol Name Function Index No.

Sensors

S3 Paper Position Detects the paper pos i tion. L4 S4

S6 Lift Detects the correct paper feed height . L10

Switches

SW1

SW2

SW3 Tray Down Lowers the LCT bottom plat e. L8

Paper End Informs the CPU that th er e i s no

paper on the LCT bottom plate.

Paper Near End Informs the CPU that about 60 sheets

of paper remain on the LCT bottom plate.

Tray Down Informs the CPU that the LCT bottom

plate is in the lowe st position.

Feed Controls the paper feed clutch off-on

timing and the pick-up solenoid off timing.

Feed Unit Cove r Detects if the fee d uni t cover is open

or not.

There are two sensor s.

Note:

LCT Cover Detects if the LCT cove r is open or

not.

There are three se nsors.

Note:

Motors

LCT Lifts and lowers the LCT bottom plate

M2 Feed Drives all feed and t ransport rollers. L13

Others

SOL1

MC1 Feed Starts paper feed from the L CT. L12

Pick-up Controls the up-down movemen t of

to bring paper to t he f eed position and allow loading of the paper.

the pick-up rol l er .

L11

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Capacity Tray

MECHANICAL OPERATION 15 July 1996

4. MECHANICAL OPERATION

[G]

[F]

[E]

[D]

[C]

[A]

[B]

A609D500.wmf

The LCT uses an FRR feed system which uses three rollers. The pick-up [A], separation [B] and feed [C] rollers are common with those of the by-pass feed unit of the mainframe but different from those of the paper feed stations in the paper tray unit.

The LCT feed motor [D] drives the pick-up, separation, feed, and transport [E] rollers.

The pick-up and feed rollers rotate only when the LCT feed clutch [F] activates.

Paper feeding starts when the LCT pick up solenoid [G] activates.

15 July 1996 PAPER LIFT MECHANISM

5. PAPER LIFT MECHANISM

[C]

[B]

[C]

[D]

[A]

[F]

A609D501.wmf

[E]

A609D502.wmf

The bottom plate [A] of the LCT is raised and lowered by the LCT motor [B] and the drive belts [C]. When the main switch is on and the LCT cover is closed, the pick-up solenoid [D] activates and the LCT motor [B] rotates clockwise to raise the bottom plate until the top sheet pushes up the pick-up roller [E]. When the lift sensor [F] is de-actuated, the copier CPU de-activates the LCT motor [B] and the pick-up solenoid [D].

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PAPER LIFT MECHANISM 15 July 1996

[C]

[A]

[B]

A609D503.wmf

If the tray down switch [A] is pressed, or paper runs out, or a paper jam occurs in the LCT, the LCT motor [B] rotates counterclockwise to lower the bottom plate. However, it is not lowered all the way down at this time. When the paper position sensor [C] activates, the LCT motor stops once. At this point, the bottom plate (or the top sheet of paper) is positioned about 5 cm below the top. This gives enough space for the customer to replenish about 500 sheets of paper. If the tray down switch is then pressed again, the bottom plate moves down and stops once again when the top sheet of paper just passes the paper position sensor. In this way, the bottom plate is lowered 5 cm at each press of the tray down switch. This allows the customer to replenish paper in convenient amounts and at the same position.

15 July 1996 PAPER END DETECTION

6. PAPER END DETECTION

[A]

[B]

A609D504.wmf

The paper end sensor [A] detects paper on the bottom plate. If there is paper on the table, reflected light from the paper activates the paper end sensor. When the paper runs out, the paper end sensor de-activates and informs the copier CPU of the paper end condition.

The paper near end sensor [B] also detects the paper and the tray bottom plate. If there is enough paper on the table, reflected light from the paper activates the paper near end sensor. If less than about 60 sheets of paper remain, the paper near end sensor de-activates because the black colored bottom plate does not reflect the light from the sensor LED.

Large

Capacity Tray

+ 16 hidden pages