SCANNER
A scanner is a peripheral device which enables to digitalise documents It is the perfect instrument to transform your souvenirs and written papers into digital documents that time wont wait for Some scanners are capable of digitalizing any type of document others are destined for specific formats from the most common to the most particular such as business card scanners There exist a scanner for every use but there will be necessarily one which will be the connection between yourself and your computer
Sheetfed scanner
The sheetfed scanner is uniquely capable to digitalise sheet per sheet It is enough to put your sheet into a feeder or directly into an opening for it to appear just a few seconds later unto your screen This type of scanner is very compact but very limited in its usage In fact it has a tendency to disappear
Flat scanner
The flat scanner is the most common type of scanner It can digitalise all types of documents of different sizes more often A4 but there also exists A3 scanners To digitalise your document you just need to place it against the devices screen Today many flat scanners propose in option a back for your transparencies This option allows you to digitalise all types of transparent documents including documents on film transparencies and negatives 24x36 films You got it this is currently the type of scanner the most polyvalent available
Film scanner
First and foremost destined for professionals the film scanner is specialised in the digitalisation of 24x36 negatives or APS It can achieve very high resolutions and its quality is excellent but its use domain is very restricted
Other types of scanners exist even more specific such as business card scanners useful when you have a large batch of contacts to manage barcode scanners or pen scanners allowing you to digitalise a single line of text at a time Colour sampling depth is the number of colour gradation that the scanner is capable of dissociating The higher their number the better the colour gradation will be restored and the more your document will be faithfully restituted .Nowadays scanners propose different types of interfaces sometimes even simultaneously You must of course have the appropriate port in question on your computer The parallel port is the most widely used interface on scanners and printers for several years It is today phasing out taken over by USB Universal Serial Bus which offers superior performances and a reduced processors resources usage As with most actual peripherals scanners can connect to your computer via a USB port Very fast and practical to use this interface is also compatible to both PC and Mac and certain scanners can be even fed electricity wise directly from the USB port Destined above all for professional and work stations the SCSI interface has the lowest processor resources consumption These types of scanners are becoming rarer and are often top of the range models The programs delivered with the scanner are classified primarily into two large categories The provided versions are usually lighter versions of the commercial software which cost several hundreds of pounds They are good enough for small works but can appear more limited for an advanced editing Also named OCR it is a major advantage of scanners Thanks to this software they can read a text image and transform it into a classical text document while keeping pagesetting the images and illustrations of the original document Today the rate of recognition nears 100% but some small manual improvements may be sometimes necessary Some scanners are pretty and slim others austere and massif Some are equipped with buttons in frontage which make it possible to automate certain tasks such as for example the launching of a photocopy or a digitalization by the simple touch of a button others can also function whilst maintained vertically Depending on the main use of your scanner it may be appealing to look into these kinds of annexed functionalities
A scanner is a peripheral device which enables to digitalise documents It is the perfect instrument to transform your souvenirs and written papers into digital documents that time wont wait for Some scanners are capable of digitalizing any type of document others are destined for specific formats from the most common to the most particular such as business card scanners There exist a scanner for every use but there will be necessarily one which will be the connection between yourself and your computer
Sheetfed scanner
The sheetfed scanner is uniquely capable to digitalise sheet per sheet It is enough to put your sheet into a feeder or directly into an opening for it to appear just a few seconds later unto your screen This type of scanner is very compact but very limited in its usage In fact it has a tendency to disappear
Flat scanner
The flat scanner is the most common type of scanner It can digitalise all types of documents of different sizes more often A4 but there also exists A3 scanners To digitalise your document you just need to place it against the devices screen Today many flat scanners propose in option a back for your transparencies This option allows you to digitalise all types of transparent documents including documents on film transparencies and negatives 24x36 films You got it this is currently the type of scanner the most polyvalent available
Film scanner
First and foremost destined for professionals the film scanner is specialised in the digitalisation of 24x36 negatives or APS It can achieve very high resolutions and its quality is excellent but its use domain is very restricted
Other types of scanners exist even more specific such as business card scanners useful when you have a large batch of contacts to manage barcode scanners or pen scanners allowing you to digitalise a single line of text at a time Colour sampling depth is the number of colour gradation that the scanner is capable of dissociating The higher their number the better the colour gradation will be restored and the more your document will be faithfully restituted .Nowadays scanners propose different types of interfaces sometimes even simultaneously You must of course have the appropriate port in question on your computer The parallel port is the most widely used interface on scanners and printers for several years It is today phasing out taken over by USB Universal Serial Bus which offers superior performances and a reduced processors resources usage As with most actual peripherals scanners can connect to your computer via a USB port Very fast and practical to use this interface is also compatible to both PC and Mac and certain scanners can be even fed electricity wise directly from the USB port Destined above all for professional and work stations the SCSI interface has the lowest processor resources consumption These types of scanners are becoming rarer and are often top of the range models The programs delivered with the scanner are classified primarily into two large categories The provided versions are usually lighter versions of the commercial software which cost several hundreds of pounds They are good enough for small works but can appear more limited for an advanced editing Also named OCR it is a major advantage of scanners Thanks to this software they can read a text image and transform it into a classical text document while keeping pagesetting the images and illustrations of the original document Today the rate of recognition nears 100% but some small manual improvements may be sometimes necessary Some scanners are pretty and slim others austere and massif Some are equipped with buttons in frontage which make it possible to automate certain tasks such as for example the launching of a photocopy or a digitalization by the simple touch of a button others can also function whilst maintained vertically Depending on the main use of your scanner it may be appealing to look into these kinds of annexed functionalities
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