Description
What The HP 78A Is
The HP 78A, part number CE278A, is a black toner cartridge for a specific group of small HP monochrome laser printers. It is a consumable rather than a device, and the only question that really matters when buying one is whether it fits the printer in question. Everything else is secondary.
HP lists compatibility across two families. On the single function side it covers the LaserJet Pro P1566 and the P1606 series, with the P1606dn named specifically in the feature bullets. On the multifunction side it covers the LaserJet Pro MFP M1536 series, with the M1536dnf named. Those are compact desktop printers from an earlier generation, which is consistent with a cartridge first listed in 2010. Owners of larger machines need a different part, such as the HP 26A used by the LaserJet Pro M402 and M426 families.
Page Yield And What It Really Means
HP quotes an approximate cartridge yield of 2,100 pages. The word approximate is doing necessary work. Toner yields are measured against a standardized test document with a defined amount of ink coverage per page, and the yield a household or office actually gets depends on what it prints. Pages of plain text will exceed the rated figure. Pages with tables, headers, logos, graphs or scanned images will fall short of it, sometimes considerably.
At 2,100 pages this is a small capacity cartridge by current standards, which reflects the size of the printers it serves. Those machines were designed for low volume desktop use, and the cartridge is sized to match. For anyone printing more than a few hundred pages a month, the practical implication is frequent replacement, and it is worth checking whether a higher yield version exists for the specific printer model, since this listing covers the standard 78A only.
Original Versus Compatible Cartridges
The specification table lists compatibility options as Genuine, confirming this is an original HP part rather than a compatible one. Third party cartridges for these printers exist and cost less, and HP argues against them in its own description, stating that original cartridges avoid toner leaks and premature failures. That is a manufacturer position, not an independent finding, and this site takes no view on it.
What can be said neutrally is that original cartridges are recognized by printer firmware without complication and carry the manufacturer relationship, while third party quality varies widely between suppliers. HP also describes tamper resistant chips, firmware and packaging as helping protect the printer from malicious code and maintain data integrity, which refers to the cartridge authentication system built into its LaserJet range.
Environmental Claims
HP makes two environmental statements on this listing. The first is that 100 percent of Original HP Toner Cartridges contain recycled content. The second concerns air quality: HP states that it voluntarily designs and tests its printing systems to meet eco label emissions guidelines. Both are manufacturer statements rather than third party certifications named on this page, and neither is quantified here.
One storage note applies to all toner. Unlike ink, toner is a dry powder and does not evaporate or dry out, so a spare cartridge can sit on a shelf for a long time without deteriorating. That makes keeping a spare a low risk choice for an office that cannot afford to be without a printer, which is the usual approach in a workplace and a reasonable one at home for a machine in regular use.
Highlights
- Original HP part number CE278A.
- Approximate 2,100 page yield.
- Black toner only.
- Covers the LaserJet Pro P1566 and P1606 series.
- Covers the LaserJet Pro MFP M1536 series.
- Cartridge authentication chip working with printer firmware.
- HP states recycled content in all original toner cartridges.
- Box contains one new cartridge according to the listing.
Things To Consider
The specification table has been filled with printer fields rather than cartridge fields, and one entry could actively mislead. Special Feature is listed as Value Bundle, while the box contents in the feature bullets state one new Original HP 78A Black Toner Cartridge. A bundle implies more than one item and the contents list does not support that, so anyone expecting a multipack should confirm the quantity before ordering. Elsewhere the table lists Duplex as Yes and Dualsided printing as Yes, which are printer functions rather than cartridge properties, and Controller Type as Touch control. Product dimensions of 5.1 by 14.7 by 4.6 inches describe the shipping box. The printer compatibility field also lists only the M1536dnF and the P1566, omitting the P1606 series that appears in both the product title and the feature bullets.
- Compatibility is limited to the listed P1566, P1606 and M1536 models.
- The printer compatibility field omits a printer family named elsewhere on the same page.
- The 2,100 page yield is an approximation based on standard coverage.
- This is a small capacity cartridge, so replacement is frequent at higher volumes.
- Black only. There is no color output from this cartridge.
- Value Bundle is listed while the box contents describe a single cartridge.
- The printers this fits are from an earlier generation, so check parts and driver availability.
- The duplex and controller fields in the specification table do not apply to a cartridge.
Who Should Buy It And Who Should Not
Anyone still running an HP LaserJet Pro P1566, P1606 or MFP M1536 needs this cartridge or an equivalent, so the real decision is original against compatible. The original part is the safe choice for a printer that has to work without troubleshooting, and for anyone who would rather not deal with a cartridge that the printer refuses to recognize.
It is the wrong purchase for any other printer, which is the most common mistake made with toner, and it is worth pausing over for anyone printing at volume on an aging machine, since a 2,100 page cartridge on an old printer can add up to more than a newer and more economical machine would cost to run. Owners of other HP printers should look at the matching part such as the HP 206A, and anyone weighing a printer replacement can compare compact monochrome machines like the Xerox B230 or workgroup units such as the HP LaserJet Pro M426fdw. Brother owners will find equivalents including the TN660 across the toner cartridges category.
