Ricoh FW830 Manuel utilisateur

IMPORTANT SAFETY NOTICES

PREVENTION OF PHYSICAL INJURY

1. Before disassembling or assembling parts of the copier and peripherals,

make sure that the copier power cord is unplugged.

2. The wall outlet should be near the copier and easily accessible.

3. Note that some components of the copier and the peripherals are

supplied with electrical voltage even if the main switch is turned off.

4. If any adjustment or operation check has to be made with exterior covers

off or open while the main switch is turned on, keep hands away from

electrified or mechanically driven components.

5. The inside and the metal parts of the fusing unit become extremely hot

while the copier is operating. Be careful to avoid touching those

components with your bare hands.

HEALTH & SAFETY CONDITIONS

1. Never operate the copier without the ozone filters installed.

2. Always replace the ozone filters with the specified ones at the specified

intervals.

3. Toner and developer are non-toxic, but if you get either of them in your

eyes by accident, it may cause temporary eye discomfort. Try to remove

with eye drops or flush with water as first aid. If unsuccessful, get medical

attention.

OBSERVANCE OF ELECTRICAL SAFETY STANDARDS

1. The copier and its peripherals must be installed and maintained by a

customer service representative who has completed the training course

on those models.

2. The RAM board on the main control board has a lithium battery which can

explode if replaced incorrectly. Replace the battery only with an identical

one. The manufacturer recommends replacing the entire RAM board. Do

not recharge or burn this battery. Used batteries must be handled in

accordance with local regulations.

SAFETY AND ECOLOGICAL NOTES FOR DISPOSAL

1. Do not incinerate the toner cartridge or the used toner. Toner dust may

ignite suddenly when exposed to open flame.

2. Dispose of used toner, developer, and organic photoconductors

according to local regulations. (These are non-toxic supplies.)

3. Dispose of replaced parts in accordance with local regulations.

4. When keeping used lithium batteries in order to dispose of them later, do

not put more than 100 batteries per sealed box. Storing larger numbers or

not sealing them apart may lead to chemical reactions and heat build-up.

SECTION 1

OVERALL MACHINE INFORMATION

1. SPECIFICATIONS

Configuration: Table top

Copy Process: Electrostatic transfer system

Original Feed: Sheet feed

Original Size: Maximum: 914 x 3,600 mm

Minimum: 182 x 257 mm (B5 lengthwise)

Copy Size: Same as "Original Size"

Copying Speed: Manual feed: 6 cpm (A1/D sideways)

Sheet & Roll feed: 7 cpm (A1/D sideways)

First Copy: 19 seconds (A1 sideways)

Warm-up Time: Within 6.5 minutes (Room temperature 20oC)

Multi-Copy: 1 to 10 (A1/D or smaller)

1 to 5 (A0/E)

Automatic Reset: 2 minutes after copying is finished (can be set

to 1, 3, 4, or 5 minutes or to no auto reset)

Photoconductor: Organic photoconductor drum

Drum Charge: Single-wire with grid plate (Negative Charge)

Reproduction Ratio: 1 : 1 (±0.5%)

Exposure System: Slit exposure via fiber optic array

Exposure Lamp: Fluorescent lamp (65 W)

Development: Dual-component dry toner system

Toner Replenishment: Cartridge system (750 g toner/cartridge)

Toner Consumption: 1,860 A1 or D copies per cartridge (6% original)

Development Bias: Negative

Toner Density Control: Pattern density detection by photosensor and

direct toner density detection by induction

sensor

Image Density Adjustment: Development bias control + exposure control

Auto Image Density

Control: Development bias control and exposure control

31 December 1992 SPECIFICATIONS

1-1

Image Transfer: Single wire dc corona (negative charge) with

pre-transfer lamp

Paper Separation: Dual wire ac corona and pick-off pawls

Cleaning: Cleaning blade

Quenching: Photo quenching by LEDs

Paper Feeding: Manual feed (sheet and roll feeder optional)

Image Fusing: Heat and pressure type, teflon (upper) and

silicone rubber (lower) rollers

Fusing Lamp: Halogen lamp (115 V: 1,100 W, 220/240 V:

1,100 W)

Self-diagnostic Codes: 14 codes, displayed in copy counter

Power Source: 115 V/60 Hz....15 A

220 V/50 Hz....7 A

240 V/50 Hz....7 A

Power Consumption: Maximum: 1.47 kW

Warm-up: 1.25 kW

Ready: 0.1 to 1.2 kW

Copy cycle: 1.42 kW

Dimensions (W x D x H): 1,410 x 800 x 600 mm

55.51 x 31.50 x 23.62 in

Weight: 180 kg, 397 lb

Optional Equipment: — Sheet feeder

— Roll feeder

— Roll feeder connector

— Paper spool

— Table

SPECIFICATIONS 31 December 1992

1-2

2. MACHINE CONFIGURATION

This copier can be equipped with optional equipment as show above.

1. Copier (A098)

2. Sheet Feeder (A453)

3. Roll Feeder (A454) and Connector (A384)

4. Roll Feeder (A454) and Sheet Feeder (A453)

31 December 1992 MACHINE CONFIGURATION

1-3

3. DRUM PROCESSES

1. Charge

In the dark the charge corona unit applies a negative charge to the drum.

The grid plate ensures the charge is applied uniformly. The charge remains

on the surface of the drum because the photoconductive drum has a high

electrical resistance in the dark.

2. Exposure

High intensity light from a fluorescent lamp is reflected from the moving

original through the fiber optic array. The charge on the drum surface is

dissipated in direct proportion to the intensity of the reflected light, thus

producing an electric latent image on the drum surface.

DRUM PROCESSES 31 December 1992

1-4

3. Development

The magnetic developer brush on the development roller comes in contact

with the latent image on the drum surface. Toner particles are

electrostatically attracted to the negatively charged latent image areas.

4. Pre-Transfer Lamp

The pre-transfer lamp illuminates the drum prior to image transfer. This

reduces the attraction between the toner and the drum, thus making image

transfer easier.

5. Image Transfer

Copy paper is fed to the drum surface, at the exact timing, to align the copy

paper and the developed image on the drum surface. Then a strong negative

charge is applied to the back side of the paper. The negative charge pulls

the toner particles from the drum surface onto the paper.

6. Paper Separation

A strong ac corona discharge is applied to the back side of the copy paper,

reducing the charge on the paper and breaking the electrostatic attraction

between the paper and the drum. Then, the stiffness of the copy paper

causes it to separate from the drum. The pick-off pawls help to separate

paper which has low stiffness.

7. Cleaning

The cleaning blade removes any toner remaining on the drum surface.

8. Quenching

The light from the quenching lamp electrically neutralizes the surface of the

drum.

31 December 1992 DRUM PROCESSES

1-5

4. MECHANICAL COMPONENT LAYOUT

MECHANICAL COMPONENT LAYOUT 31 December 1992

1-6

1. Front Original Feed Roller

2. Exposure Lamp

3. 1st Press Rollers

4. Fiber Optic Array

5. Platen Roller

6. Charge Corona Unit

7. Cleaning Blade

8. Original Registration

Rollers

9. 4th Press Rollers

10. Rear Table Lever

11. 2nd Press Rollers

12. Rear Original Feed Roller

13. 3rd Press Roller

14. Switch Back Gate

15. Hot Roller

16. Upper Exit Rollers

17. Exit Gate

18. Exit Rollers

19. Pressure Roller

20. Transport Belt

21. Pick-off Pawls

22. T/S Corona Unit

23. Paper Registration Rollers

24. Lower Copy Guide

25. Table

26. Roll Feeder

27. Manual Feed Rollers

28. Sheet Feeder

29. Manual Feed Table

30. Original Guides

31. Development Roller

32. Toner Cartridge

33. OPC Drum

34. Original Table

35. 5th Press Roller

36. Original Recycle Gate

31 December 1992 MECHANICAL COMPONENT LAYOUT

1-7

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