我原来用在XP上，但系统升级到64位 Win8.1了，但没有对应的扫描仪驱动和软件，有谁知道如何安装，用什么软件吗？

好的，我试试，多谢！

楼主运行如何?
我用Vuescan每次扫描到46%就卡主了, 跪求各位大神帮助....

楼主解决了吗？我看到scan dual 4的win7驱动下面有5400-2的文件信息。新建newminolta.txt文件，写下如下信息，然后改后缀名为.inf，将在设备管理器中找到黄色感叹号的“Minolta Scan Elite 5400 2”，鼠标右键更新驱动程序，链接到“newminolta.inf”。

; scanners.inf -- Test Vista Minolta Film Drivers
;
;
; To remove this driver and install the original
; manufacturer's driver, go into Device Manager,
; open Imaging devices, then click on the scanner name
; with the right mouse button and choose Uninstall.
[Version]
Signature="$CHICAGO$"
Class=Image
ClassGUID={6bdd1fc6-810f-11d0-bec7-08002be2092f}
Provider=%Provider%
DriverVer=3/12/2009,2.0
[Manufacturer]
%Mfg%=Models,ntamd64
[Models]
; USB scanners
"Minolta Scan Dual II" = USBScanner,USB\Vid_0638&Pid_026a
"Minolta Scan Dual III" = USBScanner,USB\Vid_0686&Pid_400d
"Minolta Scan Dual IV" = USBScanner,USB\Vid_132b&Pid_000a
"Minolta Scan Elite 5400 2" = USBScanner,USB\Vid_132b&Pid_0012
"Minolta Scan Elite 5400" = USBScanner,USB\Vid_0686&Pid_400e
"Minolta Scan Elite II" = USBScanner,USB\Vid_0686&Pid_4004
"Minolta SC-110" = USBScanner,USB\Vid_0638&Pid_0a15
"Minolta SC-215" = USBScanner,USB\Vid_0638&Pid_0a16
;---------------- Duplicated from [Models]
[Models.ntamd64]
; USB scanners
"Minolta Scan Dual II" = USBScanner,USB\Vid_0638&Pid_026a
"Minolta Scan Dual III" = USBScanner,USB\Vid_0686&Pid_400d
"Minolta Scan Dual IV" = USBScanner,USB\Vid_132b&Pid_000a
"Minolta Scan Elite 5400 2" = USBScanner,USB\Vid_132b&Pid_0012
"Minolta Scan Elite 5400" = USBScanner,USB\Vid_0686&Pid_400e
"Minolta Scan Elite II" = USBScanner,USB\Vid_0686&Pid_4004
"Minolta SC-110" = USBScanner,USB\Vid_0638&Pid_0a15
"Minolta SC-215" = USBScanner,USB\Vid_0638&Pid_0a16
;---------------- USBScanner -------------------------
[USBScanner]
Include=sti.inf
Needs=STI.USBSection
SubClass=StillImage
DeviceType=1
DeviceSubType=1
Capabilities=0
[USBScanner.Services]
Include=sti.inf
Needs=STI.USBSection.Services
[Strings]
Provider="Konica Minolta"
Mfg="Konica Minolta"