Display manufacturers and chip manufacturers have acknowledged the trend toward acceptance of touchscreens as a user interface component and have begun to integrate touchscreens into the fundamental design of their products. Historically, the touchscreen sensor and its accompanying controller-based firmware have been made available by a wide array of after-market system integrators, and not by display, chip, or motherboard manufacturers. Touchscreens are found in the medical field, heavy industry, automated teller machines (ATMs), and kiosks such as museum displays or room automation, where keyboard and mouse systems do not allow a suitably intuitive, rapid, or accurate interaction by the user with the display's content. The popularity of smartphones, tablets, and many types of information appliances is driving the demand and acceptance of common touchscreens for portable and functional electronics. Touchscreens are also important in educational settings such as classrooms or on college campuses. They play a prominent role in the design of digital appliances such as personal digital assistants (PDAs) and some e-readers. They can also be attached to computers or, as terminals, to networks. Touchscreens are common in devices such as smartphones, handheld game consoles, personal computers, electronic voting machines, automated teller machines and point-of-sale (POS) systems. The touchscreen enables the user to interact directly with what is displayed, rather than using a mouse, touchpad, or other such devices (other than a stylus, which is optional for most modern touchscreens). The user can use the touchscreen to react to what is displayed and, if the software allows, to control how it is displayed for example, zooming to increase the text size. Some touchscreens use ordinary or specially coated gloves to work, while others may only work using a special stylus or pen. The display is often an LCD, AMOLED or OLED display.Ī user can give input or control the information processing system through simple or multi-touch gestures by touching the screen with a special stylus or one or more fingers. The touch panel is normally layered on the top of an electronic visual display of an electronic device. Input and output device A user operating a touchscreen Smart thermostat with touchscreenĪ touchscreen or touch screen is the assembly of both an input ('touch panel') and output ('display') device. Vertical lines appear on ADF-fed printed copies, but they do not appear on scan-to-network. Vertical lines appear when you lay the page on the flatbed. Vertical lines appear only when printing.Ĭonsider other printer-related topics such as toner cartridge, charge roller, photoconductor, transfer roller, or fuser. A mark on any white plastic surface (ADF reflection strips or flatbed pad) could result in a scan quality issue. Note: The image sensor is extremely sensitive and can read through the page. Try to inspect this area of the ADF glass and clean as necessary.Ĭheck and clean the white reflective strips in the corresponding area on the underside of the ADF. Make an ADF copy with your newly marked page.Įvaluate the distance of the vertical line to your mark. Place an intentional mark on a blank sheet of paper and take note of its location. Repeat the procedure if the problem persists. Inspect and clean the underside of the ADF (plastic strips) and the flatbed pad as necessary. A mild solvent is allowed, but do not use any cleaning solutions that contain abrasive ingredients. Note: Use "Klear" touch screen wipes (40X0392) or a water-moistened cloth. Perform an inspection of the glass for any of the following: See above illustrations or reference your User's Guide for more information if you are having a difficult time locating this designated area. Note: The glass location differs by model. If there are single smudges or spot(s), then focus on the flatbed scanner glass. If there are vertical lines (solid or opaque), then focus on the ADF scanner glass. Otherwise, a clean and soft lint-free cloth is recommended.You can purchase Lexmark's Klear touch-screen wipes ( Item# 40X0392) from the Lexmark store or participating vendors.
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