Saddle Stitchers — It's a Buyer's Market

Another feature for consideration is image recognition at the pocket, which almost eliminates the possibility of unskilled labor loading a wrong signature and catches any mixed signatures from prior processes.

Finally, down stream inhibit (DSI), as a waste reduction tool, is recommended. DSI monitors each pocket to verify a signature has made it onto the chain. Should the system detect a feed fault, subsequent pockets will not feed onto an already bad book-block.