Frequently Asked Questions

Six color cartridges and no black — who buys color this way?

Sites whose color work is the production, not the garnish. Where an imageRUNNER spends its life on color output, the GPR-51C cyan, GPR-51M magenta and GPR-51Y yellow turn over fast, while black — much of it text on other machines — is stocked separately on its own cycle. This set is a color bank: six color cartridges, no black, bought at set pricing for a color side that never gets to run dry.

What does it save against buying the colors in smaller sets?

Two 3-color sets would cost $470.14; this 6-color set is $451.65, saving $18.49, and the per-cartridge average drops to $75.28 against $78.36 in the 3-color set. Against singles at $90.69 the gap is wider still. The deeper point is logistical: one order builds the whole color reserve instead of the reserve arriving in dribs and drabs.

How much work does the color bank represent?

Every cartridge in it — GPR-51C, GPR-51M, GPR-51Y — is rated at 21,500 pages, so each slot refill is a 21,500-page refill. Note the family's quirk while planning: those color ratings sit above the GPR-51 black's 19,000 pages, so a color bank this size will comfortably outlast several black cycles on the same machine. Divide 21,500 by your daily color volume to get each cartridge's expected service stretch.

How do we keep a six-cartridge color reserve organised?

By color, oldest at the front. The classic stockroom failure is a shelf full of one color and none of the one that just died, so check the bank by color whenever a cartridge is taken from it, and let that check — not a machine warning — trigger the next order. Sealed, flat storage in a normal room is all the cartridges themselves ask for.

What if our color mix shifts and one color stops moving?

Then the honest move is to let the bank run unevenly rather than forcing rotation — cartridges are happiest installed in date order but a slow color is not a problem to solve at gunpoint. Because each unit is covered individually for a year of warranty and free returns, you are not locked into the box as a single unit of value. And a slow color on this machine is often a fast color on the next job.

How fast can a set this size reach us?

It ships as a single order from whichever of our warehouses — Illinois, Pennsylvania, Georgia or California — is closest to you, so the whole reserve lands in one delivery. For sites timing a reserve build against a big color contract, support can talk through dispatch timing Monday through Friday, 9 AM to 5 PM CST. Return and warranty terms are on our shipping and returns page.

About This Canon GPR-51 6-Color Toner Set

Six Canon GPR-51 color cartridges — drawn from the GPR-51C cyan, GPR-51M magenta and GPR-51Y yellow, each rated at 21,500 pages — for $451.65, with no black in the box. Built for color-led production work where the color side is stocked like the consumable it is, it undercuts two 3-color sets by $18.49. The GPR-51BK black and the mixed sets live alongside it in the Canon toner range.

Alongside it sit the yellow cartridge (GPR-51Y), the magenta cartridge (GPR-51M), the cyan cartridge (GPR-51C) and the GPR-51 3-cartridge set. Compatibility for this 6-cartridge set covers the ImageRunner Advance C255i, ImageRunner Advance C255iF, ImageRunner Advance C350iF, ImageRunner Advance C355i, ImageRunner Advance C355iF and ImageRunner Advance C250iF.