Testing Precision via Small-Font Printing
Regardless of the model, a fundamental requirement for any universal flatbed printer is printing precision. To test this, print text in "Size 3" (approx. 16pt) font across an entire A4 sheet using software like Photoshop. The output is considered acceptable if the text is clear, with no ghosting or blurring. The presence of ghosting indicates excessive vibration during the printing process-a sign of poor structural design, where the forces generated by the movement of the print head are not effectively dissipated.
Testing Performance via Repeated Printing
Inaccurate registration (alignment) during repeated printing leads to higher waste rates; therefore, selecting a printer with stable performance is crucial. One testing method involves printing a grid pattern (a "tic-tac-toe" board) ten times in the exact same position. Examine the result with a 40x magnifying glass; if the lines overlap perfectly, the equipment meets the standard. Alternatively, you can use a registration test similar to those used in screen printing: first, print a blue dot, then print a red dot directly over it. If the blue color is no longer visible under a 40x magnifying glass, the machine possesses high precision.
Verifying Diagonal Equality in Quadrilaterals
Within the printer's maximum printable area, print a rectangular frame. Once printed, use a ruler to measure the lengths of the diagonals. According to the geometric properties of quadrilaterals, if the diagonals are equal in length, the shape is a true rectangle. If they are unequal, the shape is no longer a rectangle-it has become a rhombus or a trapezoid. If the measured diagonals are unequal, it indicates significant positional deviation, meaning the printer's precision fails to meet the required standards.
