Bad design: Returning scan head in scanners

Vitaliy_Kiselev

Design flaw present in almost all scanners from expensive fast ones to Canon slim ones

Most fun is that one side differs only with having calibration target (and also lock mechanism for transporting).

Not only scanner can scan twice as fast (especially important in high DPI color modes).

But it will be wearing out 2 times slower. And it seems like main reason why we don't see it.

Scanner progress overall stuck for around 10 years, same USB 2.0 mostly, same quite slow CMOS sensors.

Btw some innovative design for contrast:

Vitaliy_Kiselev

Another shit thing is misalignment problem

Vitaliy_Kiselev

Another bad design is single rail used in almost all scanners, mechanically it is quote idiotic thing to do.

Rails usually also not the proper round stainless steel things, but cheap stamped rails.