Oki JET 2500 manual Technical Data, Printing system, Ink jet technology

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Technical Data

Printing system

The OKIJET 2500 printer accepts 2 different print heads; a 128 jet black only, and a 120 jet segmented four Colour Print Head. The system uses a scanning carriage in conjunction with a precision paper advance mechanism to position the paper prior to being marked by the ink jet.

Ink jet technology

The ink jet technology used in the OKIJET 2500 is called a Thermal (Bubble) Drop-On-Demand (DOD) Ink Jet. The principles of this type of ink jet are as follows:

All data sent to the printer is converted to raster data. Raster data is essentially a string of 1s and 0s that are translated into drops of ink across a scan line. As the carriage travels across the media, the black and colour ink cartridges place drops of ink on the media as directed by the data sent to the printer.

There are 24 ink jets for each of the three colours (Cyan, Magenta and Yellow) and 48 for Black, giving a total of 120 jets on the four colour ink cartridge. The black cartridge contains 128 ink jets.

Each of the jets is constructed with a heater, a supply of ink in the jet and an opening where the ink is expelled. When a command is sent to the ink cartridge to place a drop of ink on the media, the heater switches on and heats the ink until the ink expands into a bubble. As the bubble expands, the ink is then expelled out of the nozzle onto the media.

The heating and expulsion of the bubble of ink takes place in a matter of a few nano-seconds.

English

User’s Guide

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Contents Okijet Energy Star English ContentsSafety Instructions English Power/Reset button Control Panel Buttons and IndicatorsCartridge Change/Clean button Power LEDResume/FF Button Non-Recoverable Error flashing Error LED Low Ink IndicatorsReplacing/swapping the print head colour or black-only Print Head CarePrinthead Storage Box Replacing ink cartridges Press the Cartridge Change/CleanPrint head storage box Transporting the printer Cleaning the printer coverSelecting Printer Options Accessing printer settingsSpool manager TroubleshootingClearing paper misfeeds Document menuClearing paper jams If the trailing edge is accessibleClear multi-page paper jams Cause No power from outlet Problem SolvingCause Power cable is damaged Cause Print Head, cable or PCCause Carriage position error has occurred Cause Print Head has not been correctly installedCause Printer is not set for local port Cause Ready light is flashingCause An internal printer fault has occurred Cause Paper feed error has occurredCause Printer is in the Fast mode Cause The Print Head nozzles are blockedCause Print Head out of alignment Cause Paper problemCause Paper jams / multifeeds Cause Low ink Cause Ink Cartridge not installed correctly Cause Wrong brand of Ink Cartridge installed Cause The Star Wheel assembly bar has become disengaged Cause Ink Cartridge emptyOrdering supplies Selecting and Ordering SuppliesCartridges and print heads Selecting plain paper and mediaEnvelope size Speciality print mediaSelecting labels Printing system Technical DataInk jet technology Printer Specifications English Paper Tray Warranty InformationWith the original box and packaging Packaging for return to a Service CentreWithout the original box and packaging Okijet Envelopes Appendix a Printing on Speciality MediaOther media Appendix B Transportation Precautions Okijet English Index Oki Systems UK Limited Oki Systems Company