scanner keywords?

Part.A
Only Scanner / All-in-one (include Scanner)
Which difference ?


Part.B
I selected scanner Black A4 Scanner /use 300dpi (must CCD),
always default A4
around 5 mins scanner 15-20 papers,
I like (LED) and (CCD) but

some keywords I do not understand it. Google/Wiki maybe no hints ?

(A) Light Source :
LED 3-color (RGB)
LED White LED
Cold cathode fluorescent lamp

(B) Scanner element
CCD 6-line color
CCD 3-line color
CIS (Color Contact Image Sensor)

Which difference ?



any idea ? please!

 

Part A:
A scanner on its own is just that, a scanner. An all-in-one includes a printer.

Part B:
3 color (RGB) is 3 colours of red, green and blue.
LED = Light emitting diode

At a guess, the light source is the colour of the scanner's laser, and the scanner element affects what the processed image looks like. Does this help?

 

Thanks!


Part.A
Special Information Technology ... about (warm up speed, scanning speed, Quality)

I try listen sales talk:
use (LED White LED, and CCD 6-line color) is best quality, speed!?


Part.B
Review product cost, all-in-one includes scanner only use
Cold cathode fluorescent lamp, CIS (Color Contact Image Sensor)

but only scanner, that cost more Expensive ? I do not undestand ?


Part.C
most home use scanner only A4 size,
if need scanner F4 paper Legal Size 8.5" x 14" (220mm x 360mm)
no choice ?
http://en.wikipedia.org/wiki/F4_(paper)


any idea ?

 

Part A:
CCD 6-line colour would be better than the 3-colour, but I have no idea whether the different LED colours make any difference.

Part B:
All-in-one units are available from £50 onwards here, whereas you could get a scanner for about £15.

Part C:
An A4-only scanner won't take F4 paper, but they do usually have some extra space around them - you might be able to get in a sheet of F4.