The phrase "Mixtures in copier cartridges" was used as a crossword clue in the New York Times on August 7, 2025. The clever answer to this clue is "TOPEARNERS." This solution is a wordplay: inside "TOPEARNERS" is the hidden fruit "PEAR." If you remove the word "PEAR," you are left with "TONERS," which is the actual answer that fits the clue referring to mixtures used in copier cartridges (toner powder). This is a fun and clever construction typical of crossword puzzles, where the real answer is disguised inside another word. Toner is the powder mixture used in laser printer and copier cartridges to create printed text and images on paper.
Additionally, toner is a fine powder that sticks to paper using heat in laser printers, and it differs from liquid ink used in inkjet printers. It lasts longer and prints more pages per cartridge.
Thus, in the context of the New York Times crossword clue, the "mixtures in copier cartridges" answer is "TONERS," cleverly hidden in the longer word "TOPEARNERS." Toners are the critical powdered mixtures used inside copier cartridges for printing.
If further detailed or technical information about the chemical makeup of toner mixtures inside copier cartridges is desired, please specify.