Use Star CloudPRNT

Star CloudPRNT is a protocol that can print from a remote server.

In order to use Star CloudPRNT, it is necessary to prepare a web app that supports the Star CloudPRNT protocol. For details, refer to the Star CloudPRNT Protocol Developer Guide.


This section explains the printer-side settings that are necessary in order to use Star CloudPRNT with mC-Print3.

Setup procedure

Setup is performed from the printer settings screen (Web Configuration).
On the settings screen, it is necessary to save each of the setting items individually.

Change the DNS server settings if necessary depending on your environment. Advanced Settings (LAN): Setting DNS

1. Open the printer settings screen

2. Enable the CloudPRNT setting

  • From the menu or the menu button displayed at upper left, open [CloudPRNT] and set CloudPRNT Service to “ENABLE”.
  • Enter the CloudPRNT server URL in Server URL .
    CloudPRNT Version MQTT* determines the communication protocol based on this URL.
  • Enter the polling time in Polling time .
  • In HTTP Response Timeout, select the timeout time (seconds) when no response is made from the server at polling or print data retrieval.
  • Enter the user name and password in User Name and Password.
    (Input is not necessary unless requested by the CloudPRNT server.)
  • Tap [Submit].

Note

Printer firmware version 5.1 or later supports CloudPRNT Version MQTT*. Update the firmware if necessary.

The firmware version can be checked by the Self-Printing function of the printer. Self-Printing
The firmware can be updated with the utility. Use App


  • A screen where you can check and save the entered details will appear.


3. Save settings to printer

  • From the menu or the menu button in the upper left, open [Save] , select SaveRestart device , and tap [Execute] .
    The settings are saved to the printer.

Note

If the Star CloudPRNT server does not use HTTPS/MQTTS, then setup is now completed.

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4. If the CloudPRNT server uses HTTPS/MQTTS, check the security settings

  • From the menu or the menu button displayed at upper left, open [CloudPRNT] .
  • Select the TLS trust level according to the CA-Certificate that is used.
    When setting a custom CA-Certificate, file upload will be performed in Step 6.
  • To specify the specific server for NTP Server , select “Use custom NTP server” and enter the URL of the server to use.
  • Specify the TLS1.2 Cipher Suites Encryption Level (printer's cipher suite encryption level) according to the support conditions of the server where CloudPRNT will operate.
    When this item is set to “MEDIUM”, it may be possible to shorten the time before printing starts.
    For a list of cipher suites supported by each level, refer to Cipher Suite Support List.
  • Enable/disable TLS1.3.
    When this item is set to “DISABLE”, it may be possible to shorten the time before printing starts.
    For a list of supported cipher suites, refer to Cipher Suite Support List.
  • Tap [Submit] .

Notes

When changing the TLS1.2 Cipher Suites Encryption Level or TLS1.3 setting, consider the setting change carefully in advance because doing so will lower the security level from the initial settings.


  • A screen where you can check and save the entered details will appear.


5. Save settings to printer

  • From the menu or the menu button in the upper left, open [Save] , select SaveRestart device , and tap [Execute] .
    The settings are saved to the printer.

Note

If a custom CA-Certificate was selected for the HTTPS trust level in Step 4, proceed to Step 6.
If a custom CA-Certificate was not selected, setup is now completed.

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6. Upload the custom CA-Certificate

  • From the menu or the menu button displayed at upper left, open [CloudPRNT] .
  • Tap the [Browse..] button and open the select file screen (dialog box), then select the CA-Certificate (PEM format) and tap [upload].

  • A screen where you can check and save the entered details will appear.


7. Save settings to printer

  • From the menu or the menu button in the upper left, open [Save] , select SaveRestart device , and tap [Execute] .
    The settings are saved to the printer.

  • Setup is now completed.

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