Appendix
111
USB (Universal Serial Bus) Interface
Outline
•Full-speed transmission at 12 Mbps [bps: bits per second]
•Plug & Play, Hot Insertion & Removable
USB transmission specifications
USB function
Status transmission from printer with USB interface
In order to ensure that there is no lack of status data, it is necessary to periodically retrieve status
data at the host computer.
Unlike RS-232 transmission, it cannot spontaneously interrupt data transmission
to the host
computer.
The printer has a 128-byte status data buffer. Statuses that exceed the buffer capacity are
cancelled.
Overall specifications According to USB 2.0 specifications
Transmission speed USB Full-Speed (12 Mbps)
Transmission method USB bulk transmission method
Power supply specifications USB self power supply function
Current consumed by USB bus 2 mA
USB packet size (with full-speed connection)
USB bulk OUT (TM) 64 bytes
USB bulk IN (TM) 64 bytes
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