Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Overview of the interface
6 Data communications interface
7 Signalling interfaces
   7.1 Physical connections
   7.2 Print clock signal
   7.3 PrintGo signal
8 Messages and their usage
9 Detailed message definitions
   9.1 The message header
   9.2 0x00: PrintData
   9.3 0x01: ClearPrintData
   9.4 0x10: SoftwareDownload
   9.5 0x11: InitManufacturer
   9.6 0x12: InitCustomer
   9.7 0x13: LoadPattern
   9.8 0x14 LoadBarCodeFormat
   9.9 0x16: LoadFont
   9.10 0x20: PrinterOffLine
   9.11 0x21: PrinterOnLine
   9.12 0x22: RequestTechnicalData
   9.13 0x23: RequestSoftwareVersion
   9.14 0x24: RequestStatus
   9.15 0x25: ResetPrinterFaults
   9.16 0x2F: TestInkJet
   9.17 0x90: SoftwareUpload
   9.18 0x91: UploadManufacturer
   9.19 0x92: UploadCustomer
   9.20 0x93: UploadPattern
   9.21 0x94: UploadBarCodeFormat
   9.22 0x95: UploadFont
   9.23 0xA2: TechnicalData
   9.24 0xA3: SoftwareVersion
   9.25 0xA4: PrinterStatus
10 Message flow
   10.1 Printer states and state changes
   10.2 Printer initialisation
   10.3 Printing
   10.4 Requests and responses
   10.5 Ink jet testing
11 Use of the service socket
Annex A (Normative) Timing diagrams
      A.1 Normal timings
      A.2 Double PrintData message
      A.3 PrintGo errors
      A.4 Print error
Annex B (Informative) PrintData examples
      B.1 Example of a mixed bar code and text message
      B.2 Example of a mixed image and text message
Annex C (Informative) Load Font definition
      C.1 General
      C.2 Message structure
Bibliography