Labels:text | screenshot | font OCR: Classes, Objects, and Characteristics DPD implementation The physical printer class and its objects and attributes are mapped to codes in the DPD - The attributes are set up as follows; - asking the bidirectional interface of the print device - loading the values from a static database for unidirectional Networking print device object attributes are determined by issuing printer-specific commands, control sequences, and queries to the print device and receiving a response through back-channel monitoring. Figure 7
