Remanufacturing the Canon 105 Toner Cartridge
- By Mike Josiah
- Aug 01, 2007
First released in September 2006, the Canon imageClass MF7200 series of printers are based on a 1,200-dpi, 20-ppm Canon engine. As with most Canon cartridges they do NOT use a chip. The 105 cartridge is unique in its design; as of June 2007 there is not a comparable HP cartridge. Testing is ongoing to determine what parts are needed/available to remanufacture them. The cartridge for the MF 7200 series is the 105 (0265B001AA) and is rated for 10,000 pages.
Figure A shows a potential location for a chip and possibly a different plastic configuration for other manufacturers. However no chips are used on the 105 version and we have not seen any other manufacturers use this cartridge yet. Figure B shows that cartridge as removed from the box. Note the many shipping locks and tape seals. This cartridge even comes with a bag of desiccant attached!
The Canon imageClass MF7200 series printer is a true multifunction machine in that it is a duplex copier, laser printer, color network scanner, super g3 fax and network capable. These machines also print on up to 11-by-17 paper, have a touch-screen interface, come standard with 256MB of memory, have a 50-sheet ADF and have a first page out of less than 7.9 seconds.
This cartridge has a list price of $388 but so far has a street price of about $205. (Pricing as of June 2007.)
So far the only machine based on the MF7200 engine is the imageClass MF-7280.
Printing test pages, cartridge troubleshooting as well as some simple machine troubleshooting is covered at the end of the article.
The theory for these cartridges is the same as most of the other HP/Canon monochrome cartridges so we will not go into it here.
Supplies required
1) 525 grams of MF7200-type toner
2) New OPC drum (under investigation)
3) New wiper blade (under investigation)
4) New PCR (optional) (under investigation)
5) New mag roller (optional) (under investigation)
6) New doctor blade (optional) (under investigation)
7) 99% Isopropyl alcohol
8) Magnetic roller cleaner
9) Drum lubricant
10) Conductive grease
11) White lithium grease
Tools required
1) Toner-approved vacuum
2) Small common screwdriver
3) Phillips-head screwdriver (#1)
4) Needle-nose pliers
5) Flush-cutting wire cutters
Remanufacturing Instructions
1) Note on each end of the cartridge there are small silver pins. To separate the halves these pins must be removed. There is no need to cut through the top of the cartridges to remove the pins. With a Dremel tool or wire cutters, cut away the plastic from around the pins and remove the pins. See Figures 1 and 2.
2) Separate the halves. See Figure 3.
3) On the large gear side, remove the drum alignment plate and screw. See Figure 4.
4) On the small gear side, remove the metal axle pin with wire cutters. The pin comes out easily, there are already two notches in the plastic that allow the wire cutters access. See Figure 5.
5) Remove the photoconductive drum and place aside. See Figure 6.
6) Remove the PCR by prying it out of the clips on either end. Clean the PCR with your preferred cleaner and place aside. See Figure 7.
7) Remove the white PCR holder by carefully prying it off the cartridge. This holder must be removed to allow the wiper blade to be removed. See Figure 8.
8) Remove the wiper blade and two screws. See Figure 9.
NOTE: Be very careful not to damage or distort the thin Mylar recovery blade next to the wiper blade. If this blade is bent or damaged in any way, it should be replaced.
9) Clean out any remaining waste toner. Make sure the foam seals under the wiper blade are clean and not damaged. See Figure 10.
10) Lightly coat the new blade with your preferred lubricant. Install the wiper blade and two screws into the cartridge. See Figure 11.
11) Install the white PCR holder and spring. Clean both of the PCR holders and place a small amount of conductive grease on the black side. Install the PCR. See Figures 12 and 13.
12) Coat the drum with your preferred lubricant. Install the drum. See Figure 14.
13) Replace the metal drum axle pin and install on the cartridge. See Figure 15.
14) Install the plastic drum alignment plate and screw. See Figure 16.
15) Place the waste chamber aside.
16) Remove the drum cover by prying up the metal bar on each side of the toner hopper. Pry off the spring-loaded arm. Be careful not to lose the spring. See Figures 17 and 18.
17) The supply section on the plastic end cap is held on with plastic rivets. Using a common screwdriver, snap the rivets off. Remove the end cap. See Figures 19 and 20.
18) Remove the three screws on the large gearside end cap. Remove the end cap. Note that most of the gear train will come with it. The gears will not fall off. See Figures 21 and 22.
19) Remove the two screws from the left side (non-gear side) small end cap. See Figure 23.
20) Remove the magnetic roller assembly from the cartridge. See Figure 24.
21) Remove the mag roller drive gear and copper contact plate so they do not get lost. See Figure 25.
22) Remove the two screws and doctor blade. Pry up the bar being very careful not to break the alignment pins. Note the screws used here are of a darker color and are longer than other screws in this cartridge. See Figures 26 and 27.
23) Clean out any remaining toner. Be very careful not to lose the clear doctor blade shims. See Figure 28.
24) If a seal is available, install it now.
25) Make sure the doctor blade seals are clean. Install the doctor blade and two screws (be sure to use the darker colored screws). See Figures 29 and 30.
26) Clean the mag roller contact plate you removed from the drive gear. See Figure 31.
27) Clean the mag roller sleeve with a dedicated mag roller cleaner.
28) Install the mag drive gear and copper contact plate onto the mag roller assembly. Make sure the contact fits tight. See Figure 32.
29) Install the mag roller assembly. Set the bearings so they fit into their respective slots. Replace the conductive grease on the contact plate. See Figures 33 and 34.
30) Clean the contacts on the gear end cap and replace the conductive grease. See Figure 35.
31) Install the gear end cap and three screws. If the end cap does not fit the stationary magnet needs to be turned so it fits properly. See Figure 36.
32) Install the small end cap and two screws. See Figure 37.
33) Fill the toner hopper with 525 grams (preliminary amount) of Canon 105 toner. Replace the fill plug. See Figure 38.
34) On the remaining end cap, while holding it in place drill two small shallow holes into where the plastic pins were. Install two screws to hold the end cap in place. See Figures 39 and 40.
35) Set the spring on the drum cover arm as shown. Install each end of the metal bar into its proper holes. Snap the arm into place. Make sure the spring-loaded arm is set right. See Figures 41, 42 and 43
36) Place the halves together. Make sure the springs are set, and install the two pins. See Figures 44 and 45.
Printing test prints
As this is a copier, the simply way is to just take a good test sheet and make a copy.
Repetitive defect chart
- Drum 95 mm
- Magnetic roller 63 mm
- PCR 45 mm
Printer troubleshooting
Most of the error messages are text messages and are fairly specific. There are, however, a few that are number only. Some of the more common ones are:
- 001 Paper jam
- 009 No paper
- 037 Memory full
Changing the density
- Press “ADDITIONAL FUNCTIONS,” then “ADJUSTMENT/CLEANING.”
- Press the Up or Down arrow until “SPECIAL MODE M” appears on the display.
- Press “SPECIAL MODE M.”
- Select “NORMAL,” “LOW,” or “HIGH.”
- The mode is set.
- Press “DONE” repeatedly until the BASIC FEATURES screen appears.
Contact Mike Josiah at 631-218-8376 or mjosiah@uninetimaging.com.
This article originally appeared in the August 2007 issue of Recharger.