The fuser used in the Toshiba eStudio 478s is 41x1178.
It is also used in all of these Lexmark printers: https://parts.lexmark.com/wpo-catalog/US_en/search/data_type:part/41X1178
The base printer model of this engine would be the MS421/MS521.
The fuser used in the Toshiba eStudio 389cx/479c is 41x0252.
It is also used in all of these Lexmark printers: https://parts.lexmark.com/wpo-catalog/US_en/search/advanced/%2841x0252%29
The base printer model of this engine would be the CS720/CS725.
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