Ricoh FW830 User manual

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
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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
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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)
3
2
4
1
31 December 1992 MACHINE CONFIGURATION
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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.
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DRUM PROCESSES 31 December 1992
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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
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4. MECHANICAL COMPONENT LAYOUT
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MECHANICAL COMPONENT LAYOUT 31 December 1992
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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
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