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  • Remanufacturing the Okidata B431 Toner cartridge

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    By Mike Josiah and the Technical Staff at Uninet

    First released in January 2014, the B431 series of monochrome laser printers are based on a 35-40ppm black (depending on the model), 1200 Dpi engine. (2400 x 1200 DPI with enhancement).

    The first page out is stated at under 5 seconds. Standard installed memory is 64MB expandable to 320MB.


    The toner cartridge is a separate item that locks into the drum unit in typical Oki fashion.

    DRUM
    DRUM

    Toner
    Toner


    The drum units are somewhat complicated. Take your time and note where the parts fit, especially the gear train.

    The printers currently based on the B431 engine are the:

    Okidata B401
    Okidata B410
    Okidata B411d
    Okidata B411dn
    Okidata B412
    Okidata B431d
    Okidata B431dn
    Okidata B432
    Okidata B512

    Okidata MB461 MFP
    Okidata MB471 MFP
    Okidata MB471w MFP
    Okidata MB491 MFP
    Okidata MB491+ MFP



    The cartridges used in these machines are:

    44574701(STD Toner) 4,000 pages $103.99 List*
    44574901(HY Toner) 10,000 pages $199.99 List* (B431 Series only)
    44574301(Drum) 30,000 pages $219.99 List*

    * Pricing current as of March 2017. With the new machines shipping with 2000 page cartridges, there is quite a demand for remanufactured cartridges!

    Required Tools

    1) Toner approved vacuum.
    2) A small Jewelers type screw driver (flat head)
    3) A Phillips head screwdriver
    4) Needle Nose Pliers

    Supplies Required

    Toner for use in the Okidata B431 series cartridges. (Check for std. or HY)
    New replacement Toner chip (Check std. or HY)
    New Replacement drum fuse
    New Long Life Drum
    New Wiper Blade
    Lint free Cloths
    Conductive grease

    Toner cartridge instructions


    1) Press in on the tab under the blue handle. See Figure 1

    Figure 1
    Figure 1



    2) Turn the blue handle to open up toner port. See Figure 2

    Figure 2
    Figure 2



    3) Vacuum all remaining toner out. See Figure 3

    Figure 3
    Figure 3



    4) Fill with new toner for use in the Okidata B431 series cartridges. (Check for std. or HY)See Figure 4

    Figure 4
    Figure 4



    5) Turn the blue handle to close the port. See Figure 5

    Figure 5
    Figure 5



    6) If the toner is to be remanufactured with the drum unit there is no need to seal it. If it is separate then a good sealing tape should be placed over the closed port. See Figure 6

    Figure 6
    Figure 6



    7) Carefully pry the chip cover off the toner cartridge and replace the chip. See Figures 7 & 7A

    Figure 7
    Figure 7



    Figure 7A
    Figure 7A



    Drum Cartridge Instructions

    8) Remove the three screws from inside the toner hopper. See Figure 8

    Figure 8
    Figure 8



    9) Carefully pry up the two back clips and the two front edge tabs. See Figures 9 & 10

    Figure 9
    Figure 9



    Figure 10
    Figure 10



    10) Remove the toner hopper. Clean and place aside. See Figure 11

    Figure 11
    Figure 11



    11) Remove the foam gasket from around the toner hopper cavity and put in a safe place. This gasket is easily damaged or lost in the cleaning process. See Figure 12

    Figure 12
    Figure 12



    12) Clean out all remaining toner from the cartridge.

    13) On the contact side of the cartridge, remove the three screws from the end cap. See Figure 13.

    Figure 13
    Figure 13



    14) Remove the two screws from the doctor blade. See Figure 14

    Figure 14
    Figure 14



    15) Remove the E ring from the gear side of the drum axle and partially pull out the contact side end cap. See Figures 15 & 16

    Figure 15
    Figure 15



    Figure 16
    Figure 16



    16) Pry up the 7 clips on the waste auger cover. See Figures 17, 18 & 19.

    Figure 17
    Figure 17



    Figure 18
    Figure 18



    Figure 19
    Figure 19



    17) Remove the waste auger cover. See Figure 20

    Figure 20
    Figure 20



    18) Completely remove the contact side end cap. Watch the spring loaded PCR holder, it may come loose. See Figures 21 & 22

    Figure 21
    Figure 21



    Figure 22
    Figure 22



    19) Remove the PCR and clean with your preferred PCR cleaner. See Figure 23

    Figure 23
    Figure 23



    20) Remove the three screws from the gear side end cap. See Figure 24

    Figure 24
    Figure 24



    21) Pull out the gear side end cap. The drum axle will come out with the end cap. See Figures 25 & 26

    Figure 25
    Figure 25



    Figure 26
    Figure 26



    22) Remove the drum. See Figure 27

    Figure 27
    Figure 27



    23) Remove the developer roller. See Figure 28

    Figure 28
    Figure 28



    24) Remove only the 8 indicated gears. Leave the two in place as they are attached to their respective augers/axles. See Figures 29 & 30

    Figure 29
    Figure 29



    Figure 30
    Figure 30



    25) Remove the two screws and wiper blade See Figure 31

    Figure 31
    Figure 31



    26) Clean out all remaining toner. See Figure 32

    Figure 32
    Figure 32



    27) Carefully clean the long spring waste auger. Be very careful not to stretch it! See Figure 33

    Figure 33
    Figure 33



    28) Clean the doctor blade. See Figure 34

    Figure 34
    Figure 34



    29) Coat the new wiper blade with your preferred lubricant and install the two screws. See Figure 35

    Figure 35
    Figure 35



    30) Install the cleaned developer roller. (Clean with your preferred developer roller cleaner). See Figure 36

    Figure 36
    Figure 36



    30) Clean the contacts on the inside of the contact end cap. Replace the conductive grease where needed. See Figure 37

    Figure 37
    Figure 37



    31) Replace the drum fuse. See Figure 37A

    Figure 37A
    Figure 37A



    32) Slide the spring auger into the contact side end cap as shown. See Figure 38

    Figure 38
    Figure 38



    33) Press the contact side end cap into place. See Figure 39

    Figure 39
    Figure 39



    34) Install the three end cap screws. See Figure 40

    Figure 40
    Figure 40



    35) Place the spring auger into its slot on the end cap. See Figures 41 & 42

    Figure 41
    Figure 41



    Figure 42
    Figure 42



    36) Carefully snap the spring auger cover into place. See Figure 43

    Figure 43
    Figure 43



    37) If the PCR holder came loose in disassembly, re-install it now. See Figure 44

    Figure 44
    Figure 44



    38) Install the drum, large gear to the gear side of the cartridge. See Figure 45

    Figure 45
    Figure 45



    39) Install the gears as shown. See Figure 46

    Figure 46
    Figure 46



    40) Clean both PCR holders, place a small amount of conductive grease on them and install the PCR. Make sure the short shaft side is on the contact end cap side. See Figures 47 & 48

    Figure 47
    Figure 47



    Figure 48
    Figure 48



    41) Slide the gear end cap in place. Make sure the gears stay in their respective places. Do not fully install the end cap, stop with to left. Most times its the gear indicated that comes out. See Figures 49 & 50

    Figure 49
    Figure 49



    Figure 50
    Figure 50



    42) Before pushing the end cap fully into position, make sure the two augers and all the gears are meshing properly. The end cap should slide fairly easily into place. If not then there is a gear out of place. See Figure 51

    Figure 51
    Figure 51



    43) Install the three gear end cap screws. See Figure 52

    Figure 52
    Figure 52



    44) Install the two Doctor Blade screws. See Figure 53

    Figure 53
    Figure 53



    45) Install the foam toner hopper gasket. Take your time on this and dont stretch the foam. The two ends should meet without overlapping. Make sure the foam fits into the corners flat. See Figures 54 & 55

    Figure 54
    Figure 54



    Figure 55
    Figure 55



    46) Snap the toner hopper into place. Make sure the two back tabs and the front right and left side lock into place. See Figures 56 & 57

    Figure 56
    Figure 56



    Figure 57
    Figure 57



    47) Install the three toner hopper screws. See Figure 58

    Figure 58
    Figure 58



    48) Carefully add about 30g of toner for use in the Okidata B431 series cartridges into the open toner port. See Figure 59

    Figure 59
    Figure 59



    50) Install the E ring onto the drum axle shaft. See Figure 60

    Figure 60
    Figure 60



    51) Install the new/remanufactured toner cartridge and lock it in place with the blue handle. See Figure 61

    Figure 61
    Figure 61