Epson WorkForce Pro WF-4820 printer is only suitable for small-scale business and to users using them very little in their home for printing. It is not suitable for printing the documents because it prints slowly and takes time to print an image. Using it continuously for some time makes the workforce printer slow in its process. To avoid this problem,
Step 1: Check the document which is printing at present, cancel the printing.
Step 2: Do not print anything sometimes.
Step 3: Wait for the printer to get back to its original state.
Step 4: Close all the opened files and documents, give its time to recover.
Step 5: If you print image with high quality then it will reduce the printer speed.
Step 6: While using bidirectional printing the printer header have to move in both the direction, this makes your Pro WF-4820 to print slowly.
Step 7: Disable the high-speed printing option in windows by changing the printer settings.
Step 8: In Mac OS go to System Preferences, Menu, Printers & Scanners
Step 9: Click on options and suppliers; unselect the high-speed printing
Cartridges can’t be recognized