指示に従ってフォトトレイに入れる色付きのスマートシートとは何ですか？

Hi @JordanTheTech, I’d like to help! The sheet is used to align the printer. The sheet goes with every pack of the paper you purchase.   Load HP Sprocket Photo Paper Load 5.0 × 7.6 cm (2 × 3 in) HP ZINK Sprocket Photo Paper into the input tray.

Remove the paper cover by pulling it straight up, and then set it aside.
Load up to 10 sheets of photo paper with the blue Print Quality Card (formerly Smartsheet). Make sure the blue card is on the bottom of the stack with the barcode facing down, and the photo paper is loaded with the HP logos facing down.
NOTE: Keep the blue card until you are done with all 10 sheets, and then discard it.

Replace the paper cover.The printer automatically calibrates with the blue card.

Hope this helps! Keep me posted. 
 
And, Welcome to the HP Support Community. 
 
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