Question about Office Equipment & Supplies
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Posted on Jan 02, 2017
The problem is most likely a broken plastic lever on the end of the
shaft that moves the print head. The plastic lever is keyed to the
shaft by a flat on the shaft. The plastic has a tendency to split at
the edge of the flat, resulting in the lever slipping on the shaft.
This in turn results in one side of the print head not contacting the
paper with sufficient pressure. The other end of the shaft has a thick
plastic sector gear which is much less likely to break.
I fixed mine by making a clamp from a metal spacer (made from split tube about 1/8 inch long) and force fitting it over the part of the plastic lever that fits on the metal shaft (on the end towards the inside of the unit). There is just enough clearance to do this without hitting the print head frame.
To remove the plastic lever, first remove two screws from back of unit, then pull up on top of unit, unplug two ribbon cables from circuit board and remove top. Then unplug two remaining ribbon cables from circuit board, and three screws holding circuit board. Lift circuit board and fan/fan-holder as one piece. Finally, disengage tab on plastic retainer on end of metal shaft, rotate tab straight up and lift shaft up and to the side (may require a little wiggling). The plastic lever slides off the metal shaft.
Posted on Mar 20, 2009
like some of the other printers, it could br 1 of 2 things,
first try a cleaning. it could be the nozzles that handle the 5th line are partially clogged.
if cleaning does not work, it seems like the printhead will need to be replaced. It might have to be serviced by a canon service center if the printhead is not user replaceable.
Posted on Apr 15, 2009
I had the exact same issue with mine! I didn't manage to fix it, but I know exactly what the issue is. If you open the printer, you'll find a black rectangular box above where the film fits inside the printer. This black box is connected to the board above it, and is supposed to press down against the film, and then against the paper for it to print properly. There is a little bar above the rectangular box, and there should be two plastic pieces on both ends of this bar. The bar is also connected to the gears, and when the gears move the bar, the two plastic pieces coming off of the bar push the black box down. When I looked at mine, only one of the plastic pieces was doing its job; the other one was broken, and was sliding on the bar. Tried some super glue, wouldn't work. I suggest tossing it out like I did, unless it's still under warranty or you want to try fixing the plastic piece so the printer head gets pressed down all the way.
Posted on Jun 22, 2009
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