# Developer unit HP 8JM70A for LaserJet printers — black

**URL:** https://aio.lv/en/product--hp-8jm70a--3980626
**Data updated:** 2026-02-07 21:02 (EET)
**Category:** Printer Maintenance Kits
**Manufacturer:** HP
**Manufacturer code:** 8JM70A
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

HP 8JM70A developer unit (black) is a replacement maintenance component for compatible HP LaserJet printers. It contains the developer used to transfer toner to the imaging drum, helping restore print quality and maintain consistent black output. Suitable for scheduled service or when print defects appear; simplifies maintenance and extends device life.

## Long description

Developer unit HP 8JM70A (black) is a maintenance replacement component for compatible HP LaserJet printers. It contains the developer material responsible for facilitating toner transfer to the imaging drum, helping to restore and maintain consistent black print quality. The unit is intended for scheduled maintenance or replacement when print defects related to toner transfer appear.
Advantages
The developer unit restores uniform black density and reduces print defects caused by worn developer components. It is a designed replacement part that simplifies maintenance, helps maintain consistent print output over time and can contribute to extending the service life of the printer by ensuring correct toner transfer.
Suitable for
Routine maintenance of compatible HP LaserJet printers
Replacing worn developer components to correct streaks or uneven black prints
Preparing the device for high-quality monochrome output
Key specifications
Color: Black
Type: Developer unit (replacement maintenance component)
Compatibility: Designed for use in specific HP LaserJet printer models (refer to printer documentation for exact model fit)
Function: Contains developer material for toner transfer to the imaging drum
How to use
Power off the printer and follow the printer manufacturer’s instructions to access the developer unit location. Remove the used developer unit according to the service manual and install the replacement HP 8JM70A unit until it is securely seated. Close any covers, power on the printer, and run any recommended initialization or calibration cycles to restore optimal print quality.
Usage recommendations
Replace the developer unit as indicated by the printer status messages or during scheduled maintenance intervals. Use genuine replacement parts and follow HP’s service instructions to avoid damage and ensure correct installation and consistent black print output.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All HP products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized HP service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty