Hi, On 2021-03-26 8:24 a.m., Swen Dietrich via sane-devel wrote: > Hello SANE Developers, > > the list of backends said "Testers needed!" for my printer. > I'm owner of a Canon iSensys MF746Cx. > > How can I help with driver development for this printer? Usually, if the appropriate backend picks it up, testing merely involves trying all of the available options. Said support might be wrong (flatbed scan area for example) so we would correct those things. > The device was not connected to the internet yet and thus the > factory-drivers are still installed on the printer. > > >> Bus 003 Device 048: ID 04a9:27fa Canon, Inc. MF745C/746C >> Device Descriptor: >> bLength 18 >> bDescriptorType 1 >> bcdUSB 2.10 >> bDeviceClass 0 >> bDeviceSubClass 0 >> bDeviceProtocol 0 >> bMaxPacketSize0 64 >> idVendor 0x04a9 Canon, Inc. >> idProduct 0x27fa >> bcdDevice 0.00 >> iManufacturer 1 Canon >> iProduct 2 MF745C/746C >> iSerial 3 <snip!> >> bNumConfigurations 1 This device is not listed at all on our "Supported Devices" page (based on the supplied USB ids) so at this point I guess we don't know what protocols are supported. I see from a datasheet that this is a fairly new device, perhaps released in 2019. Older Canon devices used MFNP and BJNP protocols. However, IIRC, modern Canon devices are not and are instead using eSCL.
Cheers, Ralph
