Canon<SUP>®</SUP> PC 850 Remanufacturing Instructions
Introduction Date: May 1994
OEM Cartridge Numbers:
Compatible Copier Models:
- List Price - $384.95
- Wholesale - $270.00
- Super Store - $299.99
OEM Rated Page Yield:
- List Price - $3,595.00
- Super Store - $1,199.99
- OPC Drum: 30 mm
- Toner: Magnetic monocomponent, 630 grams
- PCR: Diameter 15.8 mm; Overall Length 348 mm
- Wiper Blade: Polyurethane blade, the base has a reflective metal stamping attached to it to help erase the OPC drum
- Doctor Blade: Polyurethane and a flexible stainless steel base
- Magnetic Developer Roller: Aluminum sleeve
- Seal Type: New seal configuration installed from the inside of the toner reservoir
- Toner Low Sensing: Sensor bar installed in cartridge
The Canon® PC 850 personal copier was introduced in May 1994. It is Canon's
top-of-the-line personal copier with features more commonly found
in high-end machines sold through dealers. The front-loading paper cassette holds 250 sheets and adjusts to accommodate various paper sizes up to tabloid-size (11" X 17"). It also enlarges and reduces from 49% to 204%.
The 50-sheet bypass tray accommodates other
materials including colored paper and transparencies.
This copier also features what Canon refers to as its
RAPID Fusing System™, which delivers copies instantly with no warm-up time. Copies are delivered at 16 pages per minute.
The PC 850 copier is targeted for small businesses and home/office environments and is sold extensively through office superstores. Canon's primary marketing efforts concentrate
on affordably priced convenience and enhanced features. Although the PC 850 actually sells for under $1,500, the OEM replacement cartridge comes with a hefty price tag — up to $385. This
opens the door for remanufacturers to offer compatible cartridges for considerably less
while still enjoying a substantial profit.
The cartridge is similar to previous Canon PC copier imaging systems and is relatively easy to remanufacture. OEM cartridges ship with a black paper installed between the
drum shutter and drum. It is probable that this paper is present to prevent damage to the drum during shipping as a result of the long drum shutter.
The PC 850 cartridge has an OEM-yield rating of 10,000 pages. The drum and wiper blade will most likely be
single-cycle components depending on how the cartridge is
used. Additional testing will be required to verify component life for the PCR, mag roller and doctor blade.
Combining the ease of remanufacturing with the profit potential of selling compatible cartridges, the
remanufacturer has an attractive new business opportunity with the Canon PC
Lay the cartridge upside down and release the two clips on the underside and the clip through the hole on the end. Pivot the end plate out and away from the cartridge (Fig. 1).
2. Remove the cartridge pin.
Remove the plastic pin with a screw starter as shown in Fig. 2.
3. Remove the hopper tension spring.
Slide the hopper tension spring from the post on which it is hooked and remove (Fig. 3).
4. Separate the hopper section from the waste bin.
Lift and gently work the waste bin to the left until the pivot post slips out of the sleeve (Fig. 4).
5. Clean and fill the hopper
Remove the hopper cap and clean the hopper with dry, filtered, compressed air. Clean the contacts with a lint-free cloth (Fig. 5). Fill the hopper with 625 grams of the proper type of
toner. Replace the cap and set hopper section safely to the side.
Remove the three screws securing the black metal plate to the cartridge then lift off the plate (Fig. 6).
Slide the gray tabs toward the middle of the cartridge (Fig. 7).
Lift the left end of the assembly then rotate the right side up and out. (Fig. 8).
Remove the PCR and clean with a lint-free cloth. Clean the assembly with dry, filtered, compressed air (Fig. 9).
Remove the two screws that secure the metal plate to the non-geared side of the waste bin and remove the plate (Fig. 10). This plate contains a drum axle inserted into the drum.
Lift the non-geared side of the drum and slide the geared side out of the waste bin (Fig. 11). If you plan to reuse the drum, clean with compressed air or a soft lint-free cloth. Store the drum
in an area where it is protected from light and impact damage.
8. Remove the wiper blade.
Remove the two screws that secure the wiper blade and then the wiper blade (Fig. 12). Clean the wiper blade with dry, filtered, compressed air.
Clean the waste bin with dry, filtered, compressed air (Fig. 13). Inspect the foams, felts and sealing blade for damage.
10. Install the wiper blade.
Install the wiper blade and secure with the two screws. Wipe the reflective metal stamping on the wiper blade clean with a lint-free cloth (Fig. 14). This reflective metal stamping helps in
the erasure of post images from the OPC drum.
Powder the drum with Kynar® powder and install in the waste bin by reversing the process in step 7 (Fig. 15). Replace the metal end plate with the gear axle and secure with two screws.
12. Install PCR assembly.
Insert the PCR axles into the saddles on the assembly (Fig. 16). Install the PCR
assembly by reversing the sequence described in step 6. Be careful not to bend the PCR contact on the geared side
of the cartridge (Fig. 16A). Install the black metal plate and secure with the three screws.
13. Join the hopper section and the waste bin.
Slide the pivot post on the hopper section into the sleeve on the waste bin (Fig. 17). Bring the two halves together and install the plastic cartridge pin (Fig. 18).
14. Install the hopper compression spring.
Use a pair of needlenose pliers to set one end of the spring into the notch shown and slide the other end onto the post (Fig. 19).
Set the end cap on the two locator posts on the top of the cartridge. Pivot the end cap into the cartridge until all three clips are engaged (Fig. 20).
For additional information, visit the company website at www.scc-inc.com. Or contact SCC in the United States at 800-488-2426 or 919-774-3808. The European corporate offices can
be reached at +44 (0) 118 935 1888. The Belgium sales office number is +(00) 32 8 172 1700.
This article originally appeared in the March 1999 issue of Recharger.