The Relationship Between DPI, File Size, and Printing Performance > 자유게시판

DPI refers to the number of dots per linear inch and represents the density of ink dots a printer can place. While most people think of image sharpness when considering DPI, it also directly influences file size and printing speed. When you increase the DPI setting, you demand greater dot density by packing more dots into the same space. This enhances visual clarity that looks more refined and polished when printed. However, this improvement isn't free.

Higher DPI requires significantly more data to define every printed element. Each dot must be specified by color and position, so a file at 300 DPI is much larger than a 150 DPI version of the same size. Raising resolution doubles the linear density, which squares the total pixels, which can increase storage needs by 2–3x depending on the image format and compression ratio. High-resolution files delay transmission from your computer to the printer, during batch printing of multiple documents.

Higher resolution directly impacts printing efficiency. Printers must process and interpret more information per page to ensure precise dot placement. Even if the printer’s hardware is fast, the the rate of data transmission can create a processing delay. The RIP may require additional time to prepare the image before printing can begin, leading to extended wait times. In certain printer types, the printer may reduce its mechanical speed, which further extends print duration.

For ریسوگراف general-purpose printing tasks, a DPI range of 200–300 is typically adequate. Exceeding standard print settings is essential for high-end graphic work where microscopic detail matters. Selecting unnecessarily high resolution can waste disk space, delay your printing process, and use more consumables without any visible quality gain.

Always align resolution with your output purpose. Consider viewing distance, the substrate’s texture and absorbency, and its recommended settings. For signage meant to be seen from a distance, 150 DPI may be more than enough. For detailed photo albums, 300 DPI or higher can make a noticeable difference. Use proof prints to evaluate results to identify the sweet spot between visual fidelity, storage demands, and efficiency for your unique workflow.