Brother MFC-9600, photocopy is broken, I don't understand
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I have a brother MFC-9600 Printer/Scanner/Photocopier/Fax comobo unit. Recently I found out the photocopy doesn't work right. It would produce a very light print out similar to a unit very low on toner. The unit has plenty of toner left and the laser printing unit is in perfect order as it makes good, black prints when I send a print job to it from my computer. The scanner also produces good contrast when I scan to computer from the unit. I checked copy settings such as "document type" and "contrast" from maximum to minimum, but the unit continues to produce very light prints. Since the scanning and printing units are both in good working order, I don't understand why photocopier function won't work correctly. Any clue? |
you would have to open it up, and inside are some lenticular mirrors the
image bounces off of when its scanned. The mirrors likely have a mild dust buildup on them, which results in 'filtering' the image to a very light impression. wrote in message oups.com... | X-No-Archive: Yes | | I have a brother MFC-9600 Printer/Scanner/Photocopier/Fax comobo unit. | Recently I found out the photocopy doesn't work right. It would | produce a very light print out similar to a unit very low on toner. | | The unit has plenty of toner left and the laser printing unit is in | perfect order as it makes good, black prints when I send a print job to | it from my computer. | | The scanner also produces good contrast when I scan to computer from | the unit. | | I checked copy settings such as "document type" and "contrast" from | maximum to minimum, but the unit continues to produce very light | prints. Since the scanning and printing units are both in good working | order, I don't understand why photocopier function won't work | correctly. | | Any clue? | |
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That doesn't make sense. The scanner gives solid black image when I scan in greyscale mode with the lid open. Photocopying with the lid open gives mild grey printout. If the issue was with the scanning, I would suspect problems in scanned images too. |
Not at work so I can't be sure about this model. Does it have a sheet feeder on
the scanner. (ie can you scan from the flat bed OR through a sheet feeder). If so, try copying both ways and see if there is a difference. The sheet feeder usually has a seperate window (narrow window the width of the page) through which the scanner unit "sees" the paper, if the sheet feeder fails but the flat bed works then this window may need cleaning (dry cloth is best, denatured alcohol or gentle household cleaner if necessary). Another thought, the internal mirrors may be used differently between sheet feed and flat bed, there could be a clue there and maybe cleaning the mirrors would be needed but only if one method of copying works and the other one fails. There has to be a difference in the way the internal electronics operate when scanning versus copying (different signal paths are opened up). If the results are the same from sheet feeder and flat bed then I would change the scanner bulb (sounds silly????, could be that it is on the edge of failure and the difference in logic between scanning and copying is enough to make the difference). I assume it is not under warranty? If so then call your friendly local Brother agent. You may want to call them anyway but I guess it will cost something to do so. Tony wrote: X-No-Archive: Yes I have a brother MFC-9600 Printer/Scanner/Photocopier/Fax comobo unit. Recently I found out the photocopy doesn't work right. It would produce a very light print out similar to a unit very low on toner. The unit has plenty of toner left and the laser printing unit is in perfect order as it makes good, black prints when I send a print job to it from my computer. The scanner also produces good contrast when I scan to computer from the unit. I checked copy settings such as "document type" and "contrast" from maximum to minimum, but the unit continues to produce very light prints. Since the scanning and printing units are both in good working order, I don't understand why photocopier function won't work correctly. Any clue? |
"Cobalt" wrote in message
... you would have to open it up, and inside are some lenticular mirrors the image bounces off of when its scanned. The mirrors likely have a mild dust buildup on them, which results in 'filtering' the image to a very light impression. wrote in message oups.com... | X-No-Archive: Yes | | I have a brother MFC-9600 Printer/Scanner/Photocopier/Fax comobo unit. | Recently I found out the photocopy doesn't work right. It would | produce a very light print out similar to a unit very low on toner. | | The unit has plenty of toner left and the laser printing unit is in | perfect order as it makes good, black prints when I send a print job to | it from my computer. | | The scanner also produces good contrast when I scan to computer from | the unit. | | I checked copy settings such as "document type" and "contrast" from | maximum to minimum, but the unit continues to produce very light | prints. Since the scanning and printing units are both in good working | order, I don't understand why photocopier function won't work | correctly. | | Any clue? | Dirty optics leads to less light getting to the latent white areas on the OPC, to neutralise the charge, and so toner stays on the OPC leading to grey instead of white on the paper. Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://home.graffiti.net/diverse Copier repair hints http://www.divdev.fsnet.co.uk/copiers.htm |
N cook wrote: "Dirty optics leads to less light getting to the latent
white areas on the OPC, to neutralise the charge, and so toner stays on the OPC leading to grey instead of white on the paper. " This is a digital copier by the way. Scanner scans it first, stores it in memory, then, image is drawn onto the imaging drum with a laser beam. |
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