Canon CanoScan N1240U Manual

Also see for N1240U - CanoScan Flatbed Scanner: Product guide Quick start guide User guide

Contents

Canon CanoScan N1240U Manual Manual pdf 47 page image

w w w ww w47AppendicesContents Index Previous View Next View Previous Page Next PageYou can select the format of the files in which scannedimages are saved by the Toolbox. This topic explains thevarious characteristics of the different file formats. BMP FileThis is the standard Windows bitmap file format. It issupported by most Windows application programs. Thisformat is frequently selected when an image file will onlybe used in a Windows environment. The “.bmp” file nameextension is generally assigned to this format. Please notethat this format cannot be selected in the Macintoshversion of the Toolbox. PICT FileThis is the standard Macintosh graphic file format. It issupported by most Macintosh application programs. Thisformat is suitable when an image file will only be used ina Macintosh environment. Please note that this formatcannot be selected in the Windows version of the Toolbox. JPEG FileThis is the image format specified by the InternationalOrganization for Standardization’s (ISO’s) JointPhotographic Experts Group (JPEG). This format’scompression ratio is its outstanding feature. It cancompress data anywhere from 1/10 to 1/50 its originalvolume. However, it utilizes an irreversible “lossy”compression technique that loses part of the data duringcompression. Thus, the file cannot be restored to itsFile Formatsoriginal state and is slightly degraded in quality. If yourepeatedly open, edit and save a JPEG file, the loss ofquality will become more noticeable. The “.jpg” file nameextension is generally assigned to this format. This formatcannot be selected when the Image Type is set to Blackand White. PNG FileThe Portable Network Graphics (PNG) format is graduallygaining wide acceptance as an image file format for websites (Internet). This file format is used only for black andwhite images. Images are saved in a compressed state, butit is a reversible compression so that the image qualityremains unchanged when files are repeatedly opened,edited and saved. The “.png” file name extension isgenerally assigned to this format. This format cannot beselected in the Macintosh version of the Toolbox. TIFF FileThe Tagged Image File Format (TIFF) features a highdegree of compatibility between the various computerplatforms and application programs. Data called a tag isadded to the start of the file, which allows the file to beexpanded. However, this characteristic sometimes causesthe file to contain incompatible data. The “.tif” file nameextension is generally assigned to this format.