Not able to connect again once StarIO10NotFoundException thrown

[zaibniazinnowi]

Description

I have three printers connected: two Star printers and one Epson printer.

The Star printers are:

Star MCP30 – MAC address 006235F1*8

Star MCP30 – MAC address 006235B0*C

Sdk : (com.starmicronics:stario10:1.8.0)

The Epson printer continues to work normally without any issues.

However, when a StarIO10NotFoundException occurs on a Star printer, the application is unable to reconnect to it even after multiple retry attempts. The only way to recover is by rebooting the device.

Current implementation

Each printer is managed as a global instance, which is used to open and close the connection. These instances are recreated only when the application is restarted.

This approach has been working reliably and no issues were reported previously, but this problem has started occurring recently without any changes to the implementation.

Your device where the bug occurs

• Device:
  Google Pixel Tablet
• OS:
  Android 16

Your printer

• Model Names:
  Star MCP30
• Interface:
  e.g. Ethernet

Getting Star printer old instance openTimeout : 10000, getStatusTimeout : 5000, printTimeout : 30000, connectionSettings : {interfaceType : Lan, identifier : 00116235F1C8, autoSwitchInterface : false}, information : {null} with interfaceType Lan and hashcode is 88484193 with mac 00**6235F1*8

Getting Star printer old instance openTimeout : 10000, getStatusTimeout : 5000, printTimeout : 30000, connectionSettings : {interfaceType : Lan, identifier : 00116235B0EC, autoSwitchInterface : false}, information : {null} with interfaceType Lan and hashcode is 238748872 with mac 00**6235B0*C

[zaibniazinnowi]

@Tatsuki-Yamamoto2731
One more important to be added here is
Green LED on Star printer keeps blinking
Manual reboot of the printer is required to restore functionality

[Tatsuki-Yamamoto2731]

@zaibniazinnowi
Thank you for the information.

Green LED on Star printer keeps blinking

This means that MCP30 cannot obtain an IP address. (please refer to our online manual)

It is probable that some kind of issue has occurred between the DHCP server and the printer.
Could you assign a static IP address to the MCP30 instead of using DHCP and see how it goes?
(Please note that IP addresses must not be duplicated with other DHCP clients.)

[zaibniazinnowi]

@Tatsuki-Yamamoto2731
Does the “#9100 Data Timeout” apply in this scenario to discard TCP connections that have had no communication for a specified period so can accept new connections.
[issues28]

[Tatsuki-Yamamoto2731]

@zaibniazinnowi
“#9100 Data Timeout” is a function that releases the session when no data is received for a specified duration.
In your situation, since the issue seems to be with obtaining the IP address, not with the TCP session, I think “#9100 Data Timeout” is unlikely to be effective for you.

[zaibniazinnowi]

@Tatsuki-Yamamoto2731

I have a printer, Star MCP30 (MAC address: 006235B0*C), which sometimes prints bitmap receipts with corrupted output similar to the attached example.

Could you please help check why this issue occurs when printing bitmap images?

Also, I would like to confirm whether the printer supports Arabic text when printing images, for example:

"Bottled Water - المياه المعبأة"

Since the receipt is generated as an image before printing, I want to ensure that Arabic characters will be rendered correctly.

[Tatsuki-Yamamoto2731]

@zaibniazinnowi
About corrupted printing:
From your picture, not only printing bitmaps but cutting also doesn't seem to work.
This may be due to commands not being processed properly, but I still don't know the cause.
Please allow me to ask some questions so that I know more about this issue:

• Q1. When printing a bitmap, is the print 100% corrupted?
• Q2. Does this problem not occur with the other printer (MAC: 006235F1*8)?
• Q3. Is it possible to obtain the StarIO10 log? (with StarIO10Logger)

About Arabic characters:
Unfortunately, StarXpand SDK (StarIO10) does not support Arabic.
If you want to print Arabic as text instead of images, as a temporary workaround, please use StarIO and StarIOExtension.
Please refer to this comment.
When printing Arabic, specify CP864 for CodePageType.