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Dots per inch (dpi) refers to the addressable grid at which a printer is able to place a printed dot. As such, a high dpi rating infers that greater detail can be expressed in each printout. However other factors such as dot size, half-toning methods and paper will further determine the final quality. |
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HP's new generation of photo quality colour inkjet printers incorporate a 4800 x 1200 optimised dpi mode that offers one of the industry's highest quality output resolutions. This mode helps to bring out the best of high-resolution digital files.
The advantages of HP 4800 optimised dpi mode:
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stunning photo quality |
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superior input resolution of 1200 x 1200 dpi
— making the most of high quality inputs |
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eradication of minute white space and banding |
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HP's optimised 4800 x1200 dpi mode extracts tremendous amount of detail out of every image. This highly detailed mode is available when printing on HP Colourfast Photo Paper. |
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Printing a high-resolution image (greater than 600 dpi) on other inkjet with a low input resolution between 300 to 720 dpi causes a loss in quality. As these printers are unable to accept data greater than 300 or 720 dpi, the printing software downsizes the data to fit into the lower input resolution — resulting in a drop in quality. HP's 1200 x1200 dpi input resolution ensures that inputs from high-resolution images are retained and not discarded during printing. When printing in the 4800 optimised dpi mode, HP printers can accept input data up to 1200 x 1200 dpi. Input resolution, also referred to as rendering resolution, is the resolution at which the printer receives data from the operating system. |
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In 4800 optimised dpi mode, HP printers can place drops of ink on a 4800 horizontal by 1200 vertical dpi grid. Individual ink drops are intelligently placed at targeted locations on the grid in a highly precise manner. Although the printer is capable of placing drops at every location on the grid simultaneously, doing so would over-saturate the media. Instead, drops are selectively placed only at targeted locations to minimise, if not eliminate, tiny unwanted visual elements known as artifacts, that could detract from the quality of the image. |
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The 4800 optimised dpi mode offers customers an alternative photo mode that is especially useful for printing higher resolution source images from digital cameras and/or scanners. |
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HP's 4800 optimised dpi mode is a separate printing mode from HP PhotoREt 4. |
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HP PhotoREt 4 is the default printing mode during normal photo-printing. It offers excellent photo-quality printing at high speeds without increasing the dpi. |
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HP's 4800 optimised dpi mode is a dedicated photo-printing mode for printing high resolution images that are 600 dpi and above and with a maximum of 1200 x 1200-input dpi. |
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4800 optimised dpi mode must be user selected from the printer driver. |
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| * 4800 x 1200 optimised dpi colour printing on HP colourfast photo paper using 1200 x 1200 input dpi |
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