HP® 4100 Cartridge Remanufacturing Instructions...
HP® 4100
Remanufacturing Instructions
Instructions:
The Hewlett Packard
LaserJet 4100 laser printer uses a typical HP cartridge in that the toner
hopper and the waste hopper are located in one disposable unit. The toner hopper contains the toner
reservoir, the doctor blade, the toner low sensors and the magnetic roller assembly. The waste hopper
contains the OPC, the wiper blade, recovery blade and the waste bin. The retractable drum shutter is
attached to the toner hopper and must be removed prior to disassembly to avoid damaging the OPC.
The cartridge halves are held together by a pair of retaining pins; one on each end of the cartridge.
The retaining pins are flared at the ends and will damage the PCR cradles if pushed into the cartridge.
Therefore they must be removed from the inside and pushed out.
Separating Cartridge Halves:
Oasis Imaging Products, Inc. Technical Support: (888) 627-6555
Reference Information:
Materials Needed:
OEM Part Numbers:
Toner
C8061A
Drum (if needed)
C8061X
PCR (if needed)
Replacement Mylar's (if needed)
OEM Yields:
Wiper Blade (if needed)
(61A) 6000 pages @5%
Lint free, Wax free wipes
(61X) 10000 pages @5%
Cotton Swabs
99% Isopropyl Alcohol
Tools Required:
#2 Philips Screwdriver
Approximate Reman Time:
#1 Flat Tip Screwdriver
25 min.
1/8 Punch or smaller
1. Gently pry the drum shutter arm from the right side of the cartridge
being careful not to lose the tension spring located in the receptacle at
the top of the arm (Fig. 1). Now remove the silver retaining arm by
gently pulling on the left side while rotating the arm back and upward.
Note: The left side of the silver retaining arm is keyed, and must be
rotated in order to release the keyed portion (Fig. 1a).
Fig. 1
Fig. 1a
2. Remove the two screws securing the OPC retaining axle (Fig. 2).
Remove two screws from the OPC stabilizer on the opposite side of the
drum (Fig. 2a). Remove the OPC from the waste hopper. Clean, inspect
and lubricate the drum; replace if necessary. Wrap the drum in a clean lint
free cloth, or store in a drum case to minimize light exposure.
Fig. 2
3. Remove the PCR from the waste hopper
(Fig. 3) and inspect for excessive wear; replace
if necessary. Clean the PCR with a damp lint
free cloth. Make sure any residual toner and or
cleaner is completely removed to ensure that
proper voltage is maintained.
Fig.2a
Fig. 3
4. A round plastic housing (Fig.4) conceals the cartridge pins. To remove
the pins, first cover the mag roller with lint free wax free wipe to prevent
damaging the mag roller. Next using a sharp tipped punch, create a small
hole (Fig. 5) on the end of the plastic housing. Make the hole large
enough to fit a 1/8 punch to push out the pin (Fig.6).
Fig. 5
Fig. 6
Fig. 4
5. Using a punch, push
the pin out of the
housing (Fig. 7).
Note: Stand the
cartridge on end to get
better leverage, you
may have to tap the pin
with a small hammer.
Once the pinhead is free
of the plastic housing,
use pliers to remove it
from the cartridge (Fig.
8). Repeat these steps to
remove opposite
cartridge pin.
Fig. 7
Fig. 8
OPC/Waste Hopper
6. When both pins are removed, separate the cartridge halves (Fig. 9).
1. Remove the two screws securing the wiper blade (Fig.10). Clean
the waste bin with compressed air or vacuum (Fig.11). Inspect the
recovery Mylar to ensure that it is not damaged. If the Mylar is
damaged, remove and clean all adhesives from the recovery-mounting
surface, and carefully apply a new recovery blade.
Fig. 9
Fig. 10
Fig. 11
2. Waste bin re-assembly (Fig. 12). Inspect clean
and lubricate the wiper blade; replace if necessary.
Inspect the PCR for excessive wear; apply a small
amount of a quality PCR cleaner to a clean lint
free cloth and gently wipe the entire surface of the
PCR. Make sure any residual toner and or PCR
cleaner is completely removed to ensure that the
proper voltage is maintained. Clean the black PCR
saddle clip with a cotton swab and 99% IPA. This
clip is conductive and supplies the current to the
PCR. Clean and inspect the OPC (or replace),
lubricate the drum with padding powder. Re-
install the PCR and OPC, rotate the OPC against
the wiper blade and then remove residual lubricant
from the PCR with a clean lint free cloth. Set the
drum unit aside and cover it with a clean cloth to
protect it from light and physical damage.
Fig. 12
Toner Hopper
1.
Remove the two screws that hold the
(gear plate) end cap to the toner
hopper (Fig. 13).
1a. On the opposite side of the hopper
remove the two screws that hold the
(contact plate) end cap to the toner
hopper (Fig. 14).
Fig. 13
Fig. 14
2. Carefully remove the magnetic roller by lifting the roller from the toner
hopper section (Fig.15). Note the location of all peripheral components on
the mag roller ( bushings,etc). Use compressed air to remove all residual
toner from the surface of the sleeve and inspect for damage.
Fig. 15
3. Remove the two screws that hold the doctor blade in place (Fig. 16).
Use compressed air or a vacuum to remove residual toner from the blade;
replace if necessary. Inspect the mag roller Mylar for damage; replace if
necessary. Clean the hopper with compressed air or a vacuum, clean the
hopper of all residual toner. Fill the toner hopper with the required gram
load and prepare for re - assembly.
Fig. 16
4. Clean the bias charge contact with a cotton swab and alcohol
(Fig.17). Be sure to remove all residual toner and conductive grease.
Fig. 17
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5. Reassemble the toner hopper in reverse order of the
disassembly. Clean and inspect all components and
replace if necessary (Fig. 18). Place the cartridge halves
together and avoid damaging the springs on the top of
the toner hopper. Align the pinholes on each side and
insert the cartridge pins to hold the halves together.
Fig.18
6. Install the left and right ends of the silver shutter-retaining arm ( Note: the keyed tip on the left end).
Now align the tension spring in the receptacle of the drum shutter arm; the far side of the spring must
press down into the shutter arm and the near side must rest on the notch on the right side of the
receptacle (Fig. 19). Affix the drum shutter arm onto the right side of the cartridge ensuring the
exposed end of the spring sits on the on the notch indicated (Fig. 20). Pull the arm back slightly and
slowly release the arm.
Fig. 19
Fig. 20
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