HP 940 C4900A C4901A Printheads for 8000 & 8500 Series Printers - High-Quality Black & Yellow Ink Cartridges for Smooth Printing & No Paper Jams - Ideal for Office Documents, Business Reports & High-Volume Printing

Product Description

High Quality Consumables All print heads use standard technology, high-quality consumables, vacuum processing, no dust and no blocking.In order to prevent the print head from being burned, when installing a new print head or replacing an old print head, the power of the printer must be turned off before installation or replacement. Printing Effect This professional print head uses high-quality ink to print smoothly and stably, with natural colors, high reproduction and sufficient ink volume. Pure Color: High-quality raw materials, pure color, clear printout, no trailing. Smooth and Not Blocked: The ink particles are fine, and after multi-stage molecular filtration, the printing is smooth and not blocked. Delicate Image Quality: no smearing, no burrs, high color density, and excellent performance. Saturation Persistent: Restores nature, by many adjustment, to produce long-lasting saturated colors. Long Service Time: The printing effect is good, the color is vivid. Good light fastness, printed images can be stored for a longer time. The printing effect is stable The printing colors are vivid The printing words are clear Large print capacity Chip and No Paper Jams Strong compatibility with "core", no paper jams, all imported inks, zero damage to the printer, and smooth inkjet without waste!The ink quality is stable, and the ink is strictly controlled in terms of raw materials, production technology, performance indicators, etc.Ensure that the ink can be stored for three years in an unopened state at room temperature, and the printed output can be stored for a long time. Nozzle Ink Jet is Smooth Polished, no paper jams, even and smooth inkjet, no waste, good print head prints good colors! Adopt nano-pigment zero technology, that is, the diameter of the particles contained in the ink tends to 0, and the nozzle will not be blocked after long-term use, which is the key to whether the compatible ink cartridge is accepted by you. The PH value of the ink is similar to that of the original ink. The product has been filtered through 3 levels to ensure the uniformity of particle size and ion concentration, eliminating the possibility of nozzle blockage or damage. Excellent fluency, reagents, water and other raw materials. Ensure that the print head does not dry for a long time, resulting in extremely high fluidity of the ink Printhead for HP72 T1100 T1200 T610 T790 Series Printer Head QY6‑0070 Color for MP510 MP520 MX700 iP3300 iP3500 Color Printhead Fit for PIXMA iP6600D iP6700D Print Head Replacement for IP3600 / IP3680 / MP540 / MP545 / MP550 / MP558 Portable Print Head Nozzle Replacement for WF‑7610 WF‑7620 7621 3620 3640 7111 Buying Options Buying Options Buying Options Buying Options Buying Options Customer Reviews — 2.7 out of 5 stars 4 3.0 out of 5 stars 16 1.4 out of 5 stars 2 — no data no data no data no data no data Instructions: After receiving the product, remove the nozzle from the package. Before disassembling the protective device, shake the nozzle continuously to the left and right according to the figure to achieve the best use effect to achieve the best use effect. Then remove the protective device (orange with the outwardly turned handle). In order to avoid the internal inverted buckle of the protective device from damaging the circuit of the print head and causing the print head to fail to operate, pay attention to push the handle out as hard as possible. Then pull the reminder label together with the sealing blue tape to tear off. Finally, pull out the protective plug of the ink supply needle (the orange belt, please shake the nozzle arrow left and right before opening the protective clip). Installation steps: First take out the two old print heads, close the cover and turn on the printer power normally. After the print head indicator on the machine flashes, open the cover. At this time, the print head carriage (carriage) in the machine will move to the left of the machine. After it stops, install the two nozzles one by one and close the machine cover. The machine will perform calibration and print a test page. Some models will prompt "calibration failed" or "calibration failed" (this is a technical obstacle set by the original company for its products to monopolize the market, but the chip has a memory function after all nozzles are regenerated, making the calibration fail , Has nothing to do with the quality of the regeneration nozzle). In such a situation, click the "OK" or "Confirm" button on the machine panel according to the prompts, and the printing will proceed normally. Reminder: Some models will calibrate and print a test page every time they are turned on. This is normal and has nothing to do with the quality of the print head. Just click the "0k" or "confirm" button on the machine panel. It will not be calibrated every time you print without turning off the machine. Some models of the machine will perform a longer calibration before and after the first printing, which lasts about 20 minutes. At this time, please do not turn off the machine or press any control keys to avoid affecting the calibration. Precautions: (1) Avoid physical contact with the nozzle holes and circuits of the nozzle to avoid electrostatic breakdown of electronic components and damage. (2) Check whether there is enough ink in the ink cartridge of the printer at any time, and add it in time to avoid the lack of ink to burn the nozzle. (3) The machine should not be left unused for too long to avoid clogging of the nozzles without a long time. (4) The nozzles and ink cartridges should not be removed frequently or not installed for a long time, so as to prevent the ink supply pipe from entering the air and causing the ink supply to be discontinuous, and the nozzle lack of ink will affect the printing effect or burn the nozzle. (5) If it prompts "KY print head failure" or "C business head failure", try to take out the two print heads, gently wipe the circuit contacts of the failed print head with an eraser, and then install and use.