Roger, parece-em um tópico importantíssimo (ao ler o que você disse)! Não conheço o software mas efetivamente se ajuda na isntalação de scanners que não são detetados, é algo muito importante!
Faltou apenas o link para o software
Já agora deixo aqui a lista de drivers suportados (lista proveniente do site oficial):
abaton, agfafocus, apple, artec, artec_eplus48u, as6e, avision, bh, canon, canon630u, canon_dr, canon_pp, cardscan, coolscan, coolscan2, coolscan3, dell1600n_net, epjitsu, epson, epson2, fujitsu, genesys, gt68xx, hp, hp3500, hp3900, hp4200, hp5400, hp5590, hpljm1005, hpsj5s, hs2p, ibm, kodak, kvs20xx, kvs1025, leo, lexmark, ma1509, magicolor, matsushita, microtek, microtek2, mustek, mustek_pp, mustek_usb, mustek_usb2, nec, niash, p5, pie, pixma, plustek, plustek_pp, ricoh, rts8891, s9036, sceptre, sharp, sm3600, sm3840, SnapScan, sp15c, st400, tamarack, teco1, teco2, teco3, u12, umax, umax1220u, umax_pp, unsupported, xerox_mfp
A mesma informação, mas em termos de marcas:
Abaton, Acer Peripherals, Across Technologies, Actown, Adlib, AGFA, Ambir, Apple, Aries, Artec/Ultima, Avigramm, Avision, Bell and Howell, Bell+Howell, BenQ, Benq (Acer), BlackWidow, Boeder, BrightScan, Brother, C-Channel, Canon, Chinon, Compaq, Compeye, Corex, Cybercom, DCT, Dell, Devcom, Dextra, Dexxa, E-Lux, EDGE, EDT (Electronic Document Technology), Enhans, Epson, Escom, Escort, Fujitsu, Gallery, Genius, Googlegear, Guillemot, Guillemot / Hercules, Hercules, Hewlett-Packard, IBM, IOMagic, Iris, iVina, Kodak, Komodo, KONICA MINOLTA, Kyocera, LEO, Lexmark, Linotype Hell, Logitech, Medion/Lifetec/Tevion/Cytron, Memorex, Micromaxx, Microstar, Microtek, Minolta, Minolta-QMS, Mitsubishi, Mustek, NeatReceipts, NEC, Network, Nikon, Nortek, OKI, Olivetti, Olympus, Optoelectronics, Optrox, Packard Bell, Panasonic, Pentax, PIE, PIOTECH, PLANon, Plustek, Portable Peripheral Co., Ltd., Primax, Prolink, Quato, Reflecta, Relisys, RevScan, Ricoh, Samsung, Scanport, Scanshell, Sceptre, Sharp, Sicos, Siemens, SmartDisk, Spot Technology, Syscan, Tamarack, Targa, TCE, Teco, Tiny, TriGem, Trust, UMAX, Vantas, Visioneer, Viviscan, Vobis, Vuego, Xerox, Yakumo