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What model is the calculator and if it's a inker type then you have to replace the ink roller. If it's the ribbon type then you have you replace the ribbon. You can pick those inker or ribbon from Edmonton Cash Register Co. Ltd. or send us a email to order
The new ink roller types are EA-781R-BK (Black) and, EA-781R-RD (Red).
To change the ink rollers.
1). Set the power switch to off.
2). Remove the printer cover. The little paper guard or, flap on top.
3). Remove ink rollers by turning each one counterclockwise and, pulling upwards. With the calculator facing you. Red is on the left and, black is on the right.
4). Install the new ink rollers in there correct position's. Simply press them in one at a time and, make sure they are secure.
5).Put the print cover back on.
If calculator prints blurry, the rollers may not be not secure. If you have any questions about this calculator simply post a comment and, I'll respond quickly.
Hi...it appears that the ribbon is on upside down..The black has to be on the top and the red on the bottom. Just switch spools and turn the ribbon over..either that or there is a spring off the ribbon platform solenoid on the right side of the printer just below where the ribbon comes off the spool. If the spring is off or broken the ribbon platform will rise too high and print in red. Remotely the solenoid (little blue thing) could be bad or out of adjustment. Hope this helps..this is usually all it can be. Squipps