What Ink Does the HP OfficeJet 100 Mobile Use?
Last Updated:Quick answer: The HP OfficeJet 100 Mobile uses two cartridges: an HP 94 or HP 98 black and an HP 95 or HP 97 tri-color. For photos you can swap the black for a photo cartridge. Castle Ink stocks remanufactured HP 94 Black, HP 98 Black, HP 95 Tri-color, HP 97 Tri-color, HP 99 Photo and a 94 + 95 combo pack.
HP lists all four cartridges on its page-yield sheet for the OfficeJet 100 Mobile L411 series (model L411a, product number CN551A). It takes the same black and tri-color cartridges as the OfficeJet H470, the mobile printer it replaced. HP's user guide notes that different cartridge numbers are sold in different countries, so if you bought your printer outside the U.S., check the number on the cartridge you have.
CastleScore · October 2026
76/100 — Recommended
HP OfficeJet 100 Mobile
| Pillar (weight) | Score | What it is based on |
|---|---|---|
| Owner ratings (28%) | 74 | 3.8★ average across 636 ratings at Amazon.com |
| Expert reviews (18%) | 80 | PCMag 4.0/5 (June 2011) |
| Cost per page (24%) | 92 | About 2.4¢ per page blended (black + color) with our remanufactured HP 94 black (500 pages) and HP 97 tri-color (600 pages), using HP's yields for this printer. The HP 98 and HP 95 cost a little more per page. |
| Reliability (13%) | 76 | Most-reported problems: Bluetooth pairing and phone or tablet printing failing; missing drivers on newer computers; horizontal gaps or blank pages; the ink service module filling up and stopping printing |
| Features (12%) | 40 | Print only, over USB or Bluetooth, with a rechargeable battery, a 50-sheet tray and a PictBridge port for cameras. It also prints from USB flash drives. No Wi-Fi, no scanner, no display, no fax. |
| Value (5%) | 79 | Running cost and owner satisfaction |
Discontinued. PCMag reviewed the OfficeJet 100 Mobile in June 2011 at an MSRP of $279.99, and HP's support site no longer lists it. On October 21, 2026, 4inkjets listed original HP 94, 95, 97 and 98 cartridges as backordered. Remanufactured versions are still easy to find.
CastleScore is Castle Ink’s own editorial rating, built from retailer star ratings, expert reviews, real cost per page and owner complaint patterns, checked October 21, 2026. It is not a customer review. See every ranked printer or how the score works.
The cartridges, pictured
HP 94 BlackC8765WN · ~500 pages
HP 97 Tri-colorC9363WN · ~600 pages
HP 98 BlackC9364WN · ~440 pages
HP 95 Tri-colorC8766WN · ~330 pages
HP 94 + 95 comboBlack + Tri-color
HP 94 Black
HP 97 Tri-color
HP 98 Black
HP 95 Tri-color
HP 94 + 95 comboOur own remanufactured cartridges, photographed in-house.
What Ink Cartridges Does the HP OfficeJet 100 Mobile Take?
| Cartridge | HP part no. | Approx. yield | Castle Ink option |
|---|---|---|---|
| HP 94 Black | C8765WN | ~500 pages | Remanufactured HP 94 Black |
| HP 98 Black | C9364WN | ~440 pages | Remanufactured HP 98 Black |
| HP 95 Tri-color | C8766WN | ~330 pages | Remanufactured HP 95 Tri-color |
| HP 97 Tri-color (large) | C9363WN | ~600 pages | Remanufactured HP 97 Tri-color |
| HP 99 Photo (optional) | C9369WN | ~130 photos | Remanufactured HP 99 Photo |
| HP 94 + 95 combo | — | ~500 / 330 pages | Remanufactured 94 + 95 combo |
Yields for the 94, 95, 97 and 98 are HP's own figures for this printer. Other sellers list the same cartridges at 480, 330, 560 and 420 pages, measured in other HP models. The photo cartridge replaces the black, and its yield is a seller-listed figure. HP's user guide says the printer takes a photo cartridge but doesn't name the number. 4inkjets lists the HP 99 for this printer. We couldn't confirm that the HP 100 gray photo cartridge fits.
Are the HP 94 and HP 97 Worth It?
Yes, if you can choose. HP rates the 94 black at about 500 pages in this printer against 440 for the 98, and the 97 tri-color at about 600 pages against 330 for the 95. On October 21, 2026, 4inkjets listed HP's 94 black at $53.45 (about 10.7¢ a page), 98 black at $49.52 (about 11.3¢ a page), 95 tri-color at $75.99 (about 23¢ a page) and 97 tri-color at $84.99 (about 14.2¢ a page), all backordered. Our remanufactured HP 94, HP 98, HP 95 and HP 97 are $12.95 each, about 2.6¢, 2.9¢, 3.9¢ and 2.2¢ a page, and the 94 + 95 combo pack is $19.99. Our HP 99 photo cartridge is also $12.95.
How Do I Replace the Ink in the HP OfficeJet 100 Mobile?
- Unpack the new cartridge and pull the colored tab to remove the protective film. Hold it by its black plastic sides, with the label on top.
- With the printer on, open the front access cover and wait for the carriage to stop moving.
- Lift the latch on the cartridge you are replacing and carefully take the old cartridge out.
- Slide the new cartridge in at the same angle the old one came out. The symbol on the latch should match the symbol on the cartridge.
- Close the latch until it lies flat on the cartridge, then close the front cover. Wait for the carriage to return to the left side, then align the cartridges from the Toolbox (Windows) or HP Utility (Mac).
Which Other Printers Use HP 94, 95, 97 and 98?
The OfficeJet H470 mobile printer takes the same black and tri-color cartridges. The HP 94, 95 and 97 also fit desktop models such as the DeskJet 6540 and 6940, the OfficeJet 7310 and 7410, and the Photosmart 2610 and 8450. Not every one of those takes the HP 98, so check the black cartridge for each model.
What OfficeJet 100 owners ask
These are the questions that come up most for this printer in HP's support community and owner reviews, answered in our words.
Does the HP 94 black really fit?
Yes. HP's page-yield sheet for the OfficeJet 100 lists the HP 94, rated at about 500 pages. An owner in HP's community was told otherwise because HP's online supplies store didn't show the 94 for this printer, and an HP agent later confirmed it should work. The HP 98 is the cartridge HP most often paired with this printer.
It stopped printing and says the ink service module is full.
The OfficeJet 100 collects waste ink from the black cartridge in a replaceable ink service module. When the lights say it's full, printing stops and HP's guide says to contact HP for a new module. Until then you can take the black cartridge out and print with the tri-color only. Don't let it overflow, as the black ink stains.
Can I print from my phone or tablet?
It connects by USB or Bluetooth only. There is no Wi-Fi. Owners in HP's community and in Amazon reviews report trouble pairing over Bluetooth, and many say iPhones and iPads can't print to it at all. A laptop over USB is the most reliable way to use it.
Can it print with one cartridge?
Yes. With only the tri-color installed it prints in color and grayscale. With only the black or photo cartridge it prints everything in grayscale. HP says quality and speed may suffer, so treat it as a stopgap.
OfficeJet 100 quirks worth knowing
- It runs on a rechargeable battery, which HP says can print about 500 pages on a charge. That's also the monthly duty cycle PCMag reported.
- The input tray holds 50 sheets. The USB and PictBridge camera ports are on the back, which PCMag found awkward.
- It's slow. PCMag timed 1.8 pages a minute on business documents and about 3 minutes for a 4 x 6 photo with the photo cartridge.
- It reads USB flash drives formatted as FAT, FAT32 or exFAT, and HP's guide lists Windows XP to Windows 7 and Mac OS X 10.5 and 10.6 as supported systems.
Frequently Asked Questions
What ink does the HP OfficeJet 100 Mobile use?
HP 94 or HP 98 black and HP 95 or HP 97 tri-color. A photo cartridge can replace the black for photos.
Do the OfficeJet H470 cartridges fit the OfficeJet 100?
Yes. Both mobile printers take the HP 94 or 98 black and the HP 95 or 97 tri-color.
Which black cartridge prints more pages?
The HP 94. HP rates it at about 500 pages in this printer, against about 440 for the HP 98.
Other printers that use HP 94, 95, 97 and 98
HP OfficeJet H470 · HP DeskJet 6540 · HP DeskJet 6940 · HP OfficeJet 7410 · HP Photosmart 8450
More HP ink guides: HP OfficeJet 200 · HP OfficeJet 250 · HP OfficeJet 3830 · find any printer
Replacing it? Our highest-rated alternatives
- Epson EcoTank ET-2980 (cheapest to run) — CastleScore 90
- HP Color LaserJet Pro 3201dw (laser) — CastleScore 82
- HP OfficeJet Pro 9125e — CastleScore 79
Sources
Ratings and prices were checked on October 21, 2026 and will change over time.
Need replacement HP ink cartridges? Shop HP ink cartridges at Castle Ink. Remanufactured, up to 70% less than OEM, and shipped the same day when you order by 4 PM ET.