{"id":164,"date":"2021-02-07T23:48:48","date_gmt":"2021-02-07T23:48:48","guid":{"rendered":"http:\/\/learnlearn.uk\/igcsecs\/?page_id=164"},"modified":"2022-01-28T05:27:14","modified_gmt":"2022-01-28T05:27:14","slug":"laser-printers","status":"publish","type":"page","link":"https:\/\/learnlearn.uk\/igcsecs\/laser-printers\/","title":{"rendered":"Laser printers"},"content":{"rendered":"<p>&nbsp;<\/p>\n<div class=\"responsive-tabs\">\n<h2 class=\"tabtitle\">Introduction<\/h2>\n<div class=\"tabcontent\">\n\n<h3>Laser Printers<\/h3>\n<p>Laser Printers are mainly used in office or commercial environments where large volumes of printing is required. Office Laser printers usually print double sided and some offer advanced functionality such as stapling documents together and double up as photocopiers \/ scanners.<\/p>\n<p><a href=\"https:\/\/learnlearn.uk\/igcsecs\/wp-content\/uploads\/sites\/23\/2021\/02\/laser-printer-igcse-cs-0478.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-171 size-medium\" src=\"https:\/\/learnlearn.uk\/igcsecs\/wp-content\/uploads\/sites\/23\/2021\/02\/laser-printer-igcse-cs-0478-300x256.jpg?_t=1612743623\" alt=\"\" width=\"300\" height=\"256\" srcset=\"https:\/\/learnlearn.uk\/igcsecs\/wp-content\/uploads\/sites\/23\/2021\/02\/laser-printer-igcse-cs-0478-300x256.jpg 300w, https:\/\/learnlearn.uk\/igcsecs\/wp-content\/uploads\/sites\/23\/2021\/02\/laser-printer-igcse-cs-0478-768x656.jpg 768w, https:\/\/learnlearn.uk\/igcsecs\/wp-content\/uploads\/sites\/23\/2021\/02\/laser-printer-igcse-cs-0478-1024x874.jpg 1024w, https:\/\/learnlearn.uk\/igcsecs\/wp-content\/uploads\/sites\/23\/2021\/02\/laser-printer-igcse-cs-0478.jpg 1500w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n\n<\/div><h2 class=\"tabtitle\">Pros &amp; Cons<\/h2>\n<div class=\"tabcontent\">\n\n<h3>Advantages<\/h3>\n<ul>\n<li>Laser printers are generally faster than other printers<\/li>\n<li>They are more reliable than inkjet and bubblejet printers<\/li>\n<li>The toner is waterproof, making it more useful in damp environments<\/li>\n<li>The printing costs are much lower than for other printers (3 to 4 times cheaper)<\/li>\n<\/ul>\n<h3>Disadvantages<\/h3>\n<ul>\n<li>The\u00a0 initial cost outlay for the printer is generally much higher than for other printers<\/li>\n<li>Toner cartridges are more expensive than ink cartridges<\/li>\n<\/ul>\n\n<\/div><h2 class=\"tabtitle\">Video<\/h2>\n<div class=\"tabcontent\">\n\n<h3>Laser Printers<\/h3>\n<p><strong>How Laser Printers Work<\/strong><\/p>\n<div class=\"nv-iframe-embed\">\n<div class=\"container-lazyload preview-lazyload container-youtube js-lazyload--not-loaded\"><a href=\"https:\/\/www.youtube.com\/watch?v=WB0HnXcW8qQ&#038;feature=emb_logo\" class=\"lazy-load-youtube preview-lazyload preview-youtube\" data-video-title=\"How a Color Laser Printer Works -- Inside an HP\u00ae 2600 Toner Cartridge\" title=\"Play video &quot;How a Color Laser Printer Works -- Inside an HP\u00ae 2600 Toner Cartridge&quot;\">https:\/\/www.youtube.com\/watch?v=WB0HnXcW8qQ&#038;feature=emb_logo<\/a><noscript>Video can&#8217;t be loaded because JavaScript is disabled: <a href=\"https:\/\/www.youtube.com\/watch?v=WB0HnXcW8qQ&#038;feature=emb_logo\" title=\"How a Color Laser Printer Works -- Inside an HP\u00ae 2600 Toner Cartridge\">How a Color Laser Printer Works &#8212; Inside an HP\u00ae 2600 Toner Cartridge (https:\/\/www.youtube.com\/watch?v=WB0HnXcW8qQ&#038;feature=emb_logo)<\/a><\/noscript><\/div>\n<\/div>\n\n<\/div><h2 class=\"tabtitle\">Printing Process<\/h2>\n<div class=\"tabcontent\">\n\n<p><strong>Laser Printing Process<\/strong><\/p>\n<p>The laser printing process has 7 main steps<\/p>\n<p><strong>1. Rasterizing<\/strong><\/p>\n<p>The computer printer driver and software converts the document into a format that the printer can process and the sends the file to the printer.<\/p>\n<p><strong>2. Charging<\/strong><\/p>\n<p>The printer drum is given a negative charge by the primary charge roller. This means that the entire drum has a uniform negative charge.<\/p>\n<p><strong>3. Exposing<\/strong><\/p>\n<p>A precise laser scans across the drum as it is rotating, removing the charge in any areas where toner is required on the paper, leaving the areas that don&#8217;t require toner with a negative charge.<\/p>\n<p><strong>4. Developing<\/strong><\/p>\n<p>The drum rotates down towards the toner hopper and any areas that are no longer negatively charged attract toner and it sticks to the drum.<\/p>\n<p><strong>5. Transferring<\/strong><\/p>\n<p>Paper is fed through the drum as it is turning and because the latent charge on the drum is weaker than the charge on the paper, the toner is attracted to the paper and is transferred.<\/p>\n<p><strong>6. Fusing<\/strong><\/p>\n<p>The paper then passes through a heating element, that melts the plastic coating on the toner, and then pressure is applied to the paper, fusing the toner firmly to the paper.<\/p>\n<p><strong>7. Cleaning<\/strong><\/p>\n<p>Finally the roller is cleaned of any left over toner and a charge roller reapplies a uniform negative charge to the drum once again.<\/p>\n<p>&nbsp;<\/p>\n\n<\/div><h2 class=\"tabtitle\">Resources<\/h2>\n<div class=\"tabcontent\">\n\n<h3>Resources<\/h3>\n<p><strong>Past Paper Exam Questions<\/strong><\/p>\n<p><a href=\"https:\/\/pastpapers.papacambridge.com\/viewer\/caie\/cambridge-upper-secondary-igcse-computer-science-0478-2016-nov-0478-w16-qp-12-pdf\">0478\/12 &#8211; Paper 1 Theory October\/November 2016 Qn3b<\/a><\/p>\n<p>&nbsp;<\/p>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Laser Printers Laser Printers are mainly used in office or commercial environments where large volumes of printing is required. Office Laser printers usually print double sided and some offer advanced functionality such as stapling documents together and double up as photocopiers \/ scanners. &nbsp; Advantages Laser printers are generally faster than other printers They&hellip;&nbsp;<a href=\"https:\/\/learnlearn.uk\/igcsecs\/laser-printers\/\" class=\"\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Laser printers<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":70,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Laser printers | IGCSE Computer Science | Learnlearn.uk<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/learnlearn.uk\/igcsecs\/laser-printers\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Laser printers | IGCSE Computer Science | Learnlearn.uk\" \/>\n<meta property=\"og:description\" content=\"&nbsp; Laser Printers Laser Printers are mainly used in office or commercial environments where large volumes of printing is required. Office Laser printers usually print double sided and some offer advanced functionality such as stapling documents together and double up as photocopiers \/ scanners. &nbsp; Advantages Laser printers are generally faster than other printers They&hellip;&nbsp;Read More &raquo;Laser printers\" \/>\n<meta property=\"og:url\" content=\"https:\/\/learnlearn.uk\/igcsecs\/laser-printers\/\" \/>\n<meta property=\"og:site_name\" content=\"IGCSE Computer Science\" \/>\n<meta property=\"article:modified_time\" content=\"2022-01-28T05:27:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/learnlearn.uk\/igcsecs\/wp-content\/uploads\/sites\/23\/2021\/02\/laser-printer-igcse-cs-0478-300x256.jpg?_t=1612743623\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/learnlearn.uk\/igcsecs\/laser-printers\/\",\"url\":\"https:\/\/learnlearn.uk\/igcsecs\/laser-printers\/\",\"name\":\"Laser printers | IGCSE Computer Science | Learnlearn.uk\",\"isPartOf\":{\"@id\":\"https:\/\/learnlearn.uk\/igcsecs\/#website\"},\"datePublished\":\"2021-02-07T23:48:48+00:00\",\"dateModified\":\"2022-01-28T05:27:14+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/learnlearn.uk\/igcsecs\/laser-printers\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/learnlearn.uk\/igcsecs\/laser-printers\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/learnlearn.uk\/igcsecs\/laser-printers\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"IGCSE Computer Science Course\",\"item\":\"https:\/\/learnlearn.uk\/igcsecs\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Laser printers\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/learnlearn.uk\/igcsecs\/#website\",\"url\":\"https:\/\/learnlearn.uk\/igcsecs\/\",\"name\":\"IGCSE Computer Science\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\/\/learnlearn.uk\/igcsecs\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/learnlearn.uk\/igcsecs\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/learnlearn.uk\/igcsecs\/#organization\",\"name\":\"IGCSE Computer Science\",\"url\":\"https:\/\/learnlearn.uk\/igcsecs\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\/\/learnlearn.uk\/igcsecs\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/learnlearn.uk\/igcsecs\/wp-content\/uploads\/sites\/23\/2020\/08\/LearnLearnLogowhitenew.png\",\"contentUrl\":\"https:\/\/learnlearn.uk\/igcsecs\/wp-content\/uploads\/sites\/23\/2020\/08\/LearnLearnLogowhitenew.png\",\"width\":710,\"height\":98,\"caption\":\"IGCSE Computer Science\"},\"image\":{\"@id\":\"https:\/\/learnlearn.uk\/igcsecs\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Laser printers | IGCSE Computer Science | Learnlearn.uk","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/learnlearn.uk\/igcsecs\/laser-printers\/","og_locale":"en_GB","og_type":"article","og_title":"Laser printers | IGCSE Computer Science | Learnlearn.uk","og_description":"&nbsp; Laser Printers Laser Printers are mainly used in office or commercial environments where large volumes of printing is required. 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Office Laser printers usually print double sided and some offer advanced functionality such as stapling documents together and double up as photocopiers \/ scanners. &nbsp; Advantages Laser printers are generally faster than other printers They&hellip;&nbsp;Read&hellip;","_links":{"self":[{"href":"https:\/\/learnlearn.uk\/igcsecs\/wp-json\/wp\/v2\/pages\/164"}],"collection":[{"href":"https:\/\/learnlearn.uk\/igcsecs\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/learnlearn.uk\/igcsecs\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/learnlearn.uk\/igcsecs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/learnlearn.uk\/igcsecs\/wp-json\/wp\/v2\/comments?post=164"}],"version-history":[{"count":11,"href":"https:\/\/learnlearn.uk\/igcsecs\/wp-json\/wp\/v2\/pages\/164\/revisions"}],"predecessor-version":[{"id":951,"href":"https:\/\/learnlearn.uk\/igcsecs\/wp-json\/wp\/v2\/pages\/164\/revisions\/951"}],"wp:attachment":[{"href":"https:\/\/learnlearn.uk\/igcsecs\/wp-json\/wp\/v2\/media?parent=164"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}