Star Micronics 39657810 vs Epson C31CK50021: Specification Comparison
Both the Star Micronics 39657810 POP10CBi-F and the Epson C31CK50021 TM-m30III are direct thermal receipt and label printers targeting retail and POS environments. The Star unit is a 58 mm linerless-label-capable printer with a bundled barcode scanner, while the Epson is a full-featured 80 mm receipt printer with broad wireless connectivity. This comparison examines print throughput, connectivity options, and physical handling characteristics to help integrators and IT buyers choose the right fit for their deployment.
In This Guide
How Do These Printers Compare on Print Speed and Output Performance?
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Which Printer Offers Better Connectivity and Integration Flexibility?
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How Do Footprint, Media Handling, and Reliability Stack Up?
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Which should you choose: the 39657810 or the C31CK50021?
Our take: The Epson C31CK50021 TM-m30III is the stronger choice when throughput, wireless integration, and compact footprint are the primary drivers. At approximately 300 mm/s versus the Star's 58 mm/s, the Epson prints roughly five times faster — a decisive advantage for busy POS lanes. Its five-interface connectivity (USB, USB-C, Ethernet, Wi-Fi, Bluetooth 5.0) versus the Star's USB-only wired connection eliminates integration constraints in cloud-POS and mobile environments. At 2.87 lbs against the Star's 7.8 lbs, the Epson also occupies far less counter space. The Star 39657810 earns its place in fixed, low-volume single-register setups where linerless label printing is required, waste reduction from linerless media matters, a bundled barcode scanner adds value, and a 2-year warranty horizon is a procurement requirement that the Epson's 1-year term does not satisfy.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | Star Micronics 39657810 | Epson C31CK50021 |
|---|---|---|
| Print Method | Direct Thermal | Direct Thermal |
| Print Speed | 58 mm/s | 708.7 in/min (~300 mm/s) |
| Paper / Print Width | 58 mm (2.3") | 80 mm (3") |
| Print Resolution | — | 203 dpi |
| Media Types | Receipt paper, linerless labels | Thermal receipt paper |
| Connectivity | USB (wired only) | USB, USB-C, Ethernet, Wi-Fi, Bluetooth 5.0 |
| Bluetooth | — | 5.0 dual mode |
| Mount Options | — | Wall, Column, Rack |
| Weight | 7.8 lbs | 2.87 lbs (1,300 g) |
| Dimensions | 12 x 12 x 4 in | Not specified |
| MCBF Rating | 18 million lines | — |
| Bundled Accessories | 1D/2D USB barcode scanner | — |
| Warranty | 2 years | 1 year |
| Color Options | — | Epson White, Epson Black |
Frequently Asked Questions
Which should you choose: the 39657810 or the C31CK50021?
The Epson C31CK50021 TM-m30III is the stronger choice when throughput, wireless integration, and compact footprint are the primary drivers. At approximately 300 mm/s versus the Star's 58 mm/s, the Epson prints roughly five times faster — a decisive advantage for busy POS lanes. Its five-interface connectivity (USB, USB-C, Ethernet, Wi-Fi, Bluetooth 5.0) versus the Star's USB-only wired connection eliminates integration constraints in cloud-POS and mobile environments. At 2.87 lbs against the Star's 7.8 lbs, the Epson also occupies far less counter space. The Star 39657810 earns its place in fixed, low-volume single-register setups where linerless label printing is required, waste reduction from linerless media matters, a bundled barcode scanner adds value, and a 2-year warranty horizon is a procurement requirement that the Epson's 1-year term does not satisfy.
Can either of these printers handle linerless labels?
Only the Star 39657810 explicitly supports linerless label media alongside standard receipt paper. The Epson TM-m30III is documented for thermal receipt paper only; linerless label use is not listed in its specifications.
Which printer is better suited for a wireless or cloud-based POS system?
The Epson TM-m30III is the clear fit, offering Ethernet, Wi-Fi, and Bluetooth 5.0 dual-mode connectivity. The Star 39657810 is wired USB only and would require an external print server or adapter to participate in a networked or cloud POS environment.
Does either printer include a barcode scanner?
The Star 39657810 package includes a Star handheld 1D/2D USB barcode scanner/imager. The Epson TM-m30III does not include a scanner; it is a standalone receipt printer only.
More Label Printer Comparisons
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- Epson C31CJ99A9981 vs Brother RJ4230B
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