1. Introduction
Thank you for choosing the Marklife P15/M1 Portable Thermal Label Printer. This device offers a convenient and efficient way to create custom labels for various organizational needs. Featuring inkless thermal printing technology and Bluetooth connectivity, it's designed for ease of use with a dedicated mobile application. Please read this manual carefully to ensure proper operation and maintenance of your printer.
2. Specifications
| Feature | Specification |
|---|---|
| Product Model | P15 / M1 Bluetooth Label Printer |
| Label Paper Width | 12mm - 15mm |
| Max. Resolution | 203 dpi |
| Print Type | Thermal Line Printing (Monochrome, black text only) |
| Print Speed | 20mm/s |
| Connectivity | Bluetooth |
| Compatible App | Marklife App |
| App Languages | Simplified Chinese, Traditional Chinese, English, German, Italian, Japanese, French, Spanish, Korean (9 languages) |
| Battery | 1200mAh Lithium Battery |
| Charging Port | Type-C |
| Dimensions (P15) | Length: 9.6cm (3.78in), Width: 7.5cm (2.95in), Height: 4cm (1.57in) |
3. Packing List
Upon unpacking, please ensure all the following items are included:
- 1 x Marklife P15/M1 Label Maker
- 1 x User Manual
- 1 x USB Type-C Cable
- 1 x Roll Label Tape (12x40mm, often pre-installed in the label maker)
- 1 x Guide Card

4. Setup Guide
4.1. Label Stock Installation
- Open Top Cover: Press the open button down to open the lid of the printer.
- Load Paper Roll: Place the label stock into the paper bin. Ensure the label paper is face down.
- Unroll Paper: Drag a section of the label paper to the paper outlet, ensuring enough is unrolled so that the sticker part slightly protrudes.
- Close Cover: Press down to close the paper cover.
- Power On: Press and hold the power button for three seconds to turn the machine on. The indicator light will illuminate.
- Test Print: Press the power button twice to test the printed paper. The label paper can be torn off up and right when it is close to the paper outlet.

4.2. App Download and Login
- Download App: Download the 'Marklife' app from your device's App Store (iOS) or Google Play Store (Android).
- Open App: Launch the Marklife app.
- Login: You can choose to log in by email, with a third-party app (e.g., Facebook, WeChat), or as a guest. If logging in as a guest, you may need to consent to the User Agreement and Privacy Policy.
4.3. Bluetooth Connection
- Initiate Connection: In the Marklife app, click the 'UNLINK' or 'Not connected' button.
- Allow Bluetooth: Grant permission for the Marklife app to turn on Bluetooth if prompted.
- Search for Printer: The app will search for nearby print devices.
- Select Printer: Click on your printer model (e.g., P15_XXXX) from the search results to connect.
- Verify Connection: If the printer icon or status indicator in the app turns green, the printer is successfully connected.

5. Operation
5.1. Creating and Editing Labels
- Create Label: In the Marklife app, click 'Create label'.
- Select Paper Type: Choose the correct label size that matches the label stock loaded in your printer. You can use the 'Quick size selection' feature. Click 'OK'.
- Enter Text: Double-click the edit area to enter the text you wish to print.
- Adjust Font Size: In the 'Text layout' options, swipe left or right on the 'Font' slider to adjust the text size.
- Adjust Spacing: Swipe left or right on the 'Sp...' (Spacing) slider to adjust the distance between characters.
- Adjust Line Spacing: Swipe left or right on the 'Li...' (Line spacing) slider to adjust the distance between lines of text.
- Text Formatting: Use the 'B' button to bold text, 'U' to underline, and 'I' to italicize. These are toggle buttons.
- Vertical Text: Click the 'A' button with the vertical arrow to print text vertically.
- Font Options: Click 'Font Options' to change the style of the font. The app offers various fonts and templates.
- Move Text: Click 'Text' and drag the text box to reposition it on the label.
- Adjust Label Size in Editor: Pinch the screen to change the size of the label stock displayed in the editor.
- Adjust Edit Box Length: Click and move the double-headed arrow on the edit box to increase its length.

5.2. Printing
Once your label design is complete, click the 'Print' button in the app. The printer will then produce your label.

6. Maintenance
To ensure the longevity and optimal performance of your Marklife printer, follow these maintenance guidelines:
- Cleaning: Regularly wipe the exterior of the printer with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Print Head Care: If print quality degrades, gently clean the thermal print head with a cotton swab lightly dampened with isopropyl alcohol. Ensure the printer is off and completely dry before use.
- Storage: Store the printer in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery: For long-term storage, charge the battery to about 50% and recharge every 3-6 months to prevent deep discharge.
7. Troubleshooting
If you encounter issues with your printer, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Printer not turning on | Low battery, power button not held long enough | Charge the printer. Press and hold the power button for 3 seconds. |
| Unable to connect via Bluetooth | Bluetooth off on phone/printer, app permission denied, printer out of range | Ensure Bluetooth is enabled on both devices. Grant app permissions. Move printer closer to phone. Restart both devices. |
| Poor print quality / Faint print | Incorrect label paper orientation, dirty print head, low battery | Ensure label paper is face down. Clean the print head. Charge the printer. |
| Paper jam | Improper paper loading, foreign object | Open the lid, remove any jammed paper or foreign objects, and reload the paper correctly. |
| App not recognizing label size | Incorrect size selected in app | Verify the physical label size and select the corresponding size in the app's 'Select Paper Type' menu. |
8. User Tips
- For best results, always use Marklife brand label tapes.
- Experiment with different fonts and borders available in the app to personalize your labels.
- Utilize the app's templates for quick and easy label creation for common items.
- Keep the printer charged to avoid interruptions during printing tasks.
- Ensure the label paper is inserted correctly, face down, to prevent blank prints.
9. Warranty and Support
Your Marklife P15/M1 Portable Thermal Label Printer comes with a manufacturer's warranty. Please refer to the product packaging or the official Marklife website for specific warranty terms and conditions. For technical support, troubleshooting assistance, or inquiries about replacement parts, please contact Marklife customer service through their official channels.





