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Rectangular cyan and magenta inkjet printhead with plastic housing

HP

HP CH646A 761 Cyan/Magenta Designjet Printhead

SKU CH-B0J1-6CEWP MPN CH646A

Inkjet printhead supplies cyan and magenta for HP Designjet T7100 series printers

  • Product SortPrinter Accessories
  • Product TypePrinthead
  • CompatibilityHP Designjet T7100 Series Printers
  • SpecificationsPrint Technology: Inkjet Print Color: Cyan / Magenta Dimensi
  • Weight0.1500 lb
  • FeaturesSold as 1 Each.
  • Crisp cyan and magenta output for accurate drawings
  • Low-maintenance printhead keeps Designjet T7100 series running smoothly
  • Quick DIY replacement with on-screen supply alerts
  • Lightweight 0.15 lb unit fits 1.1 × 5.63 × 5.2 in slot
  • Operates reliably from 68 to 77 °F

HP Designjet T7100 Series Printhead

The HP CH646A 761 is a new inkjet printhead delivering cyan and magenta output for HP Designjet T7100 series printers. It produces crisp text, fine lines and vivid colour for technical drawings and presentations. Original HP engineering keeps maintenance low and productivity high.

Suits owners of compatible Designjet T7100 models

This part fits only the printers listed in the compatibility data. Buyers with other Designjet series or non-HP wide-format devices cannot use this printhead. It is sold as a single unit for direct replacement.

Cyan and magenta dual-colour printhead

The decisive specification is the combined cyan/magenta ink delivery in one printhead. If your workflow requires separate colour channels or a different colour pair, this is not the correct part.

Highlights

  • Crisp cyan and magenta output for accurate drawings
  • Low-maintenance printhead keeps Designjet T7100 series running smoothly
  • Quick DIY replacement with on-screen supply alerts
  • Lightweight 0.15 lb unit fits 1.1 × 5.63 × 5.2 in slot
  • Operates reliably from 68 to 77 °F

Specifications

BrandHP
ModelCH646A
Part NumberCH646A
Product SortPrinter Accessories
Product TypePrinthead
CompatibilityHP Designjet T7100 Series Printers
SpecificationsPrint Technology: Inkjet
Print Color: Cyan / Magenta
Dimensions (W x D x H): 1.1" x 5.63" x 5.2"
Package weight: 0.23 lbs.
Operating temperature: 68 to 77º F
Storage temperature: -40 to 140º F
Operating humidity: 40 to 55% RH
Storage humidity: 8 to 90% RH
Weight0.1500 lb
FeaturesSold as 1 Each.
Shipping weight0.10 kg
Package size146 × 132 × 28 mm

Questions about this item

Which HP Designjet printer series must I own for the CH646A 761 printhead to work?

The CH646A 761 printhead is compatible with HP Designjet T7100 Series printers. It fits the cyan and magenta channels in those models.

Will the CH646A 761 printhead operate correctly if my Designjet T7100 runs in an environment at 68 to 77º F and 40% humidity?

Yes. The printhead is rated for operating temperatures of 68 to 77º F and an operating humidity of 40%. Staying within those ranges ensures reliable performance.

How can I confirm the CH646A 761 printhead is functioning properly after installation?

Run a printhead alignment or diagnostic page from the printer control panel. Crisp text, fine lines, true neutral grays and vivid cyan/magenta output indicate it is working as intended.

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