Pacific Image Electronics (PIE) Primefilm 1800u
Looks like a paralellport-over-USB protocoll. See this sane-devel article and this website for details.
Was reported to use GeneScan II GL841 chipset but as the descriptor says "USB 1.0" that sounds rather strange.
USB descriptor looks very similar to Genius Colorpage Vivid III (USB) and Visioneer Onetouch 4400.
T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0 D: Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=05e3 ProdID=0120 Rev= 0.00 S: Product=USB Scanner C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 48mA I: If#= 0 Alt= 0 #EPs= 2 Cls=10(unk. ) Sub=01 Prot=00 Driver=(none) E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms <device descriptor of 0x05e3/0x0120 at 001:002 (USB Scanner)> bLength 18 bDescriptorType 1 bcdUSB 1.00 bDeviceClass 0 bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 8 idVendor 0x05E3 idProduct 0x0120 bcdDevice 0.00 iManufacturer 0 () iProduct 1 (USB Scanner) iSerialNumber 0 () bNumConfigurations 1 <configuration 0> bLength 9 bDescriptorType 2 wTotalLength 32 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 () bmAttributes 64 (Self-powered) MaxPower 48 mA <interface 0> <altsetting 0> bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 16 bInterfaceSubClass 1 bInterfaceProtocol 0 iInterface 0 () <endpoint 0> bLength 7 bDescriptorType 5 bEndpointAddress 0x81 (in 0x01) bmAttributes 2 (bulk) wMaxPacketSize 64 bInterval 0 ms bRefresh 0 bSynchAddress 0 <endpoint 1> bLength 7 bDescriptorType 5 bEndpointAddress 0x02 (out 0x02) bmAttributes 2 (bulk) wMaxPacketSize 64 bInterval 0 ms bRefresh 0 bSynchAddress 0 found USB scanner (vendor=0x05e3, product=0x0120 [USB Scanner]) at libusb:001:002
If anything is wrong or missing on this page please file a bug report or use the the form for adding an unsupported device.
If you own an unsupported scanner, please send as much information as possible. Especially the output of sane-find-scanner -v -v and/or cat /proc/scsi/scsi (for SCSI scanners) or cat /proc/bus/usb/devices (for USB scanners) can help. If you dare to open the scanner, have a look at the text that's printed on the chips. That may help to identify the chipset. If you know that the scanner is similar to another one (e.g. supported by the same Windows driver), please also mention this fact.
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