Ep9res.dll Errors Solved

The ep9res.dll file is specific to the Windows Operating System and assists the EPSON 9Pin printer driver in converting data queued for printing to a form acceptable for the printer. A 9Pin printer is also known as a dot matrix printer or impact matrix printer, and prints using a print head that moves back and forth along the page while striking an ink ribbon. This method is similar to the one used by a typewriter, except for the fact that impact matrix printers draw letters out of a dot matrix and are able to produce various fonts and graphics.

The ep9res.dll module makes it possible for the EPSON 9Pin printer to produce a dot using nine tiny metal rods called “pins”. An electromagnet or solenoid drives the pins forward towards a small guide plate. The guide plate is pierced with holes that would guide the pins. The ep9res.dll file helps the printer understand how the user would want the text or images to appear on paper.

Users only need to sit back and let the DLL do its job of reproducing the image on screen onto the paper. On Microsoft Windows, the ep9res.dll module works by using GDI (graphics device interface) which in turn uses standard APIs to render text and images on screen and on paper.

Although it may seem that the ep9res.dll file is hardly utilized nowadays because of the more ubiquitous inkjet printer, the 9Pin printer actually has numerous advantages and is far from being obsolete. The impact matrix printers are indispensable for ATMs, cash registers, data logging, and for producing carbon copies. And although impact matrix printers normally cost more than their inkjet counterparts, the printing cost per page is lower.

Ep9res.dll is created by:
Microsoft Corporation
Microsoft Support Site

Known file path:
c:\ windows\ system32\ driverstore\ filerepository\ prnep001.inf_f0a9a372\ i386\ ep9res.dll

What is a DLL?

Your operating system comes pre-installed with Microsoft DLL’s and most third party programs also install DLL’s.

DLL (Dynamic Link Library) is Microsoft’s implementation of the shared library concept. Meaning there’s a DLL library on your computer and each DLL can be shared among different Microsoft and third party programs. This shared library method helps your computer run faster by having fewer operations running at the same time.

When a DLL is missing or corrupt it may show an error message and programs may fail or crash.

Because DLL’s are shared, one missing or corrupt DLL may affect multiple programs on your computer.


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