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The Samsung Ricoh SP4100 series of
printers are based on a Ricoh 31-36ppm,
1200 x 600 dpi engine. All models have a
'rst page out in less than 6.9 seconds. (Not
7 seconds… 6.9 seconds, how’s that for
being speci'c!)
2ese are not the easiest cartridges to do,
but if care is taken they are not too bad and
the profits are nice! Care must be taken
not to disturb the doctor blade as it is very
di3cult to set back properly. 2e entire Db
assemble can be removed though so it’s not
a problem. 2ese cartridges also us a chip
that must be replaced each cycle. 2ere is
a HY and a LY cartridge and both have a
different chip. To install the replacement
chips you will need to unsolder the old
chip and solder on the new one. The HY
cartridges only work in the 4100N and
4110N, the LY only in the 4100NL
2e models in this series are:
Ricoh Aficio SP-4100N KP (Uses HY
cartridge and chip only!)
Ricoh Aficio SP-4100NL (Uses LY
cartridge and chip only!)
Ricoh Aficio SP-4110N KP (Uses HY
cartridge and chip only!)
The Ricoh Low cartridge (403073) is
rated for 7,500 pages at 5% coverage and
the High Yield cartridge (402809) is rated
for 15,000 pages at 5%.
Required Tools
1) Toner approved vacuum.
2) A small Common screw driver
3) #1 Phillips head screwdriver
4) Needle nose pliers
5) Soldering Iron and associated tools/
supplies
Required Supplies
1) Ricoh SP-4100 toner LY or HY load
2) Ricoh Sp-4100 Developer Same for
both LY & HY
3) Developer sealing strip
4) Toner hopper sealing strip
5) LY or HY Replacement chip
6) Drum padding powder
7) PCR Cleaner
8) Conductive grease
1) Clean the exterior of the cartridge.
2) Place the cartridge with the handle
facing you. On the left side, remove the
three small screws and one large screw. See
Figure 1
3) On the right side, remove the 2 small
screws and 1 large screw. See Figure 2
4) Remove the gear side end cap, 2 gears
may stay on the end cap when removed.
See Figures 3 & 4
5) Remove the four loose gears. See Figure
5
Remanufacturing the Ricoh
SP4100 Toner Cartridge
By Mike Josiah and the Technical Sta! at Uninet Imaging
Mike Josiah
Mike Josiah is the Technical Director at UniNet East Coast o"ce, a global distributor of toner, Smartchips, OPC
drums, and other toner remanufacturing components. Mr. Josiah is an industry veteran since 1987, and a member
of ASTM committee F.05, the STMC Technician Certi)cation committee, as well as an STMC trainer. He and
his support team at UniNet contribute with technical articles to industry trade magazines, and conduct seminars
at association meetings and tradeshows worldwide.
Figure 1
Figure 2
Figure 3
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6) On the opposite side, carefully pry off
the end cap. Leave the contact plate alone.
It looks like it must be removed, but it does
not. See Figure 6 & 7
7) Separate the two halves. See Figure 8
8) Remove the drum. See Figure 9
9) Remove the PCR. See Figure 10
10) Remove the PCR holders. See Figure
11
11) Remove the wiper blade shield. Slide it
over from the bent side See Figure 12
12) Remove the 2 wiper blade screws and
wiper blade. See Figure 13
13) On the top of the waste chamber sides,
pull out on the tabs and remove the waste
hopper. Clean out all remaining waste from
the hopper. See Figures 14 & 15
14) Clean out all the waste toner from the
cleaning roller and lower waste section. See
Figure 16
15) Install the upper waste hopper. It
should snap in place. See Figure 17
16) Coat the wiper blade with your
preferred lubricant and install the blade.
Remanufacturing the Ricoh SP4100 Toner Cartridges Continued
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 4
Figure 14
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Install the 2 screws. See Figure 18.
17) Install the wiper blade shield left (Bent)
side 'rst through the hole on the side the
cartridge. Slide the flat side out the slot,
making sure the spring is engaged. Make
sure the blade slides back and forth on the
spring when done. The plastic tab in the
center should fit into the rectangular slot
of the shield. See Figures 19 & 20
18) Install the PCR holders and Cleaned
PCR. If they do not 't easily, they are on
the wrong side. 2e side of the PCR with
the pointed shaft should go to the black
holder. See Figures 21 & 22
19) Install the drum and place the waste
chamber aside. Put the large gear to the
gear side of the cartridge. See Figure 23
20) Remove the fill plug from the toner
hopper. Dump out any remaining toner.
See Figure 24
21) It is best not to remove the doctor
blade as it is very di3cult to get back in the
right place. The entire mag roller section
will be removed in the next few steps to
it is possible to clean all the old toner/
developer out. See Figure 25
Figure 15
Figure 16
Figure 17
Figure 18
Figure 25
Figure 24
Figure 19
Figure 20
Figure 21
Figure 23
Figure 22
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22) Lift up plastic bar next to all three tabs,
remove the developer hopper. See Figures
26 & 27
23) Remove the metal bar from the large
white gear, Press in on the locking tabs and
remove the gear. See Figures 28 & 29
24) Remove the sealing tape from the
bottom of the hopper. See Figure 30
25) Pry up the tabs on both sides of the
cartridge to remove the upper magnetic
roller section See Figures 31, 32 & 33
26) Vacuum/blow out all remaining toner/
developer from both sides of the hopper.
See Figure 34
27) Fill the developer section with the
new developer. Make sure you keep all
chambers evenly 'lled! See Figure 35
28) Install the seal on the developer hopper
as shown, Make sure the tail is over the
non gear side. To snap the hopper in place,
line up the top 3 tabs and press the hopper
down to lock in place. See Figures 36 & 37
29) Install the seal on the toner section as
shown. Make sure the tail is over the non
gear side of the hopper. See Figure 38
30) Snap the magnetic roller section in
Figure 35
Figure 27
Figure 28
Figure 29
Figure 30
Figure 31
Figure 32
Figure 33
Figure 26 Figure 34
Remanufacturing the Ricoh SP4100 Toner Cartridges Continued
Figure 36
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place. See Figure 39
31) Replace the bottom tape seal. If it does
not stick, activate the glue with alcohol
or use black electrical tape. It’s best to use
the better rubber kind, not vinyl tape. See
Figure 40
32) Fill the hopper with Ricoh Sp-4100
toner. Replace the 'll plug. See Figure 41
33) Replace the large white gear and the
metal insert. See Figure 42
34) Install the gears as shown. See Figure
43
35) Remove the two screws on the gear
end cap. Remove the back holder and
remove the chip assembly from the end
cap. See Figure 44
36) Unsolder the old chip from the holder
and solder the new chip in place. Be careful
not to use too much heat! See Figures 45
& 46
37) Install the chip assembly, back holder
and two screws on the gear side end cap.
See Figure 47
38) Place the two halves together. Fit the
waste chamber tab over the post on the
Figure 37
Figure 38
Figure 39
Figure 40
Figure 41
Figure 42
Figure 43
Figure 44
Figure 45
Figure 47
Figure 46
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toner hopper. See Figures 48 & 49
39) Install the gear side end cap. Rotate
the drum a little so that all the gears mesh
properly. See Figure 50
40) Install the 3 small screws and one large
screw as shown. See 'gure 51
41) Install the contact end cap and 3
screws, 2 small and one large. See Figures
52 & 53
Repetitive Defect chart
Upper Fuser Roller: 105mm
Lower Pressure roller: 100mm
OPC Drum: 94mm
Transfer roller: 50mm
Error Codes
The error codes used in this series are all
in plain English so there is no need to list
them here.
Remanufacturing the Ricoh SP4100 Toner Cartridges Continued
Figure 48
Figure 52Figure 50
Figure 49
Figure 53Figure 51