Don’t Let Ink Go to Waste

If you’re using the SL-870-1 cartridge in your Pitney Bowes SendPro Mailstation, you know how important every drop of fluorescent red ink is. But are you using it as efficiently as you could?

These cartridges aren’t cheap, and improper use or storage can drastically reduce their lifespan. The good news? With a few simple adjustments, you can maximize each cartridge's yield and ensure reliable, USPS-compliant prints every time.

1. Print in Batches Instead of One-Offs

The SL-870-1 performs best when used regularly in consistent batches. When you print only one or two envelopes at a time, the cartridge has to “re-prime” the ink flow repeatedly—wasting small amounts of ink each time.

Tip:
Schedule a dedicated “mailing session” once daily or weekly, depending on your volume, and group all your prints together.

2. Store Unused Cartridges Properly

Proper storage can extend the shelf life of an unopened SL-870-1 cartridge by up to 24 months.

Do this:

• Keep it in a cool, dry place (ideally 15°C–25°C / 59°F–77°F)

• Store it upright in its sealed packaging

• Avoid exposure to sunlight or direct heat sources

Don’t do this:

• Store in high humidity areas like near printers or windows

• Freeze or refrigerate—this causes condensation damage

3. Turn Off the Meter When Not in Use

Many users leave their SendPro Mailstation on 24/7. But long idle periods with the machine powered on can cause ink to dry around the nozzle.

Solution:
If you won’t be printing for a day or more, turn the machine off completely to prevent evaporation and ink clogs.

4. Clean the Print Head Regularly (But Not Too Often)

While cleaning the print head clears blockages, doing it excessively burns through ink.

Rule of thumb:
Only run the cleaning cycle when you see visible print issues—like faded, patchy, or broken postage marks. Avoid “preemptive” cleaning unless prompted by the system.

5. Monitor Cartridge Usage with Software Tools

If your postage meter supports it, use built-in usage tracking to:

• Predict when to reorder

• Spot unusually fast ink depletion

• Print reports to verify impression counts

For the SL-870-1, expect roughly 400 to 880 impressions depending on your print density and usage habits.

6. Use the Right Envelopes and Labels

Incompatible or coated surfaces can cause ink smudging or waste due to multiple reprints.

Stick to:

• Matte, uncoated envelopes and labels

• USPS-approved media with consistent absorbency

Avoid:

• Glossy or waxed materials that repel ink

• Overly textured envelopes

7. Buy Genuine or USPS-Compatible Supplies

Using unofficial, low-grade compatible ink may seem cost-effective, but it risks:

• Premature clogs

• Meter errors

• Reduced impression counts

The SL-870-1 is specifically designed to meet USPS fluorescence standards, ensuring your postage is readable and deliverable.

Conclusion: Make Every Drop of SL-870-1 Count

Your SL-870-1 cartridge isn’t just ink—it’s a key part of a high-performance mailing system. By storing it properly, using your meter efficiently, and printing smartly, you’ll extend its life and avoid unnecessary replacements.

With every batch of crisp, fluorescent-red postage, you’ll save money, time, and frustration—and that’s a win for any business.