Runs in HP-45 addressing & coding systems
Collins Ink & Mailtech Cartridges — In Stock, Ships Same Day
Collins ink and Mailtech's own cartridges — MAX2, MAX3, Ultra, and Ultra Plus — for HP-45 addressing and coding machines.
MAX3 & Ultra — our best-selling HP-45 cartridges
Sigma solvent for coated and non-porous stock
Bulk bladders & liter bottles for high-volume shops
5.0 on Google Reviews
Established 1977 · Trusted by 250+ commercial printers & mailers
Cartridges On the Shelf
Order today, it ships today — from our own shelf.
What Our Customers Say
"Mailtech Mailing Systems have helped to elevate our imaging ability with High-speed UV inkjet systems/tabbers that will print on plastic and paper at speeds I never imagined possible…"
Steve P. · D3 Inc.
"Doug and his team have been a tremendous help to our organization. They are really down-to-earth people with high tech skills who go out of their way to insure we are successful."
Jeffrey S. · Adams DMS
"Since the mid 1990s Doug has kept us labeling and up and running. I would recommend the Mailtech company for your Mailing Services."
Jim P. · Town of Hempstead
"…They are our first choice for mailing equipment and supplies. From design to installation, their support is unparalleled."
Edo M. · Hatteras
The Right Ink for HP-45 Printers
Mailtech MAX3 — dries fast and won't smudge on hard stock: Tyvek, PVC, varnish, plastic cards. Buskro's own Apollo guide recommends it
Mailtech Ultra & Ultra Plus — extra-dark black for big jobs. Cartridges, heads-up cartridges with tubing, and 1-liter bottles
Collins Sigma solvent — HP 45si cartridges. Can sit uncapped 12+ hours without clogging, and keeps for 2 years on the shelf
Mailtech MAX2 — quick-disconnect cartridges and 1-liter bottles for bulk ink systems
Bulk sizes — HP 370 ml bladder black for high-volume HP-45 machines
Spot colors — CM-500 red (PMS 186) on the shelf. Other colors matched to order
Maker's spec sheets: Collins Sigma TDS · Sigma+ TDS
House Brands You Can't Get Anywhere Else
MAX3 and Ultra are our own brands. Made for HP-45 printers, sold only by Mailtech — and backed by the team that services these machines.
Frequently Asked Questions
Which cartridge should I run — MAX3, Ultra or Ultra Plus?
MAX3 for fast-dry work on hard stock like Tyvek and plastic. Ultra and Ultra Plus for extra-dark black on big runs. Tell us your machine and paper and we'll match it.
Do you have solvent ink for coated envelopes?
Yes — Collins Sigma solvent in HP 45si cartridges. It's made for coated and non-porous stock — glossy envelopes and plastics — and can sit uncapped 12+ hours without clogging.
Can I get spot colors?
Yes — CM-500 red (PMS 186) is on the shelf. We can match other colors too. Call with your PMS number.
How fast can you get cartridges to my shop?
It ships the same day from Deer Park, NY. Most of the Northeast gets it the next day. On Long Island we often deliver free ourselves.
What are Mailtech Ultra and MAX3, exactly?
They're our own brands — ink cartridges made for mailing work on HP-45 machines, sold only by Mailtech.





