I don't know if this is the case but check this.
Solution ID TAUS0702504EN* Solution Usage 21
Description
A dark jitter is seen in the main scan direction (front-to-rear).This is usually noticable when using heavy stock paper. It is most prevalent when printing gray
halftones.
Solution
CAUSE: Heavier paper contacts the upper second transfer roller and causes the transfer unit to vibrate.This vibration causes the image to jitter when being
transfered from the drum to the transfer belt.
SOLUTION:Install firmware v27-GC8 or later and set DipSW 11-5 to "1". After the DipSW is set please perform the following to activate the feature.
1. Enter User Setting.
2. Select Common Setting.
3. Select Next.
4. Change the Thick Paper BK Mode to ON.
This firmware will cam all the 1st transfer rollers against the drums when using black only mode. Even though the color 1st transfer rollers are cammed
against the drums they are not used for image development.They are only used to stiffen the transfer assembly to reduce the amount of vibration. NO COLOR
CLICKS WILL BE INCURRED.
SPECIAL NOTE : Solution contribution by Clinton Marquardt, ESS/SSD
Solution ID TAUS0702504EN* Solution Usage 21
Description
A dark jitter is seen in the main scan direction (front-to-rear).This is usually noticable when using heavy stock paper. It is most prevalent when printing gray
halftones.
Solution
CAUSE: Heavier paper contacts the upper second transfer roller and causes the transfer unit to vibrate.This vibration causes the image to jitter when being
transfered from the drum to the transfer belt.
SOLUTION:Install firmware v27-GC8 or later and set DipSW 11-5 to "1". After the DipSW is set please perform the following to activate the feature.
1. Enter User Setting.
2. Select Common Setting.
3. Select Next.
4. Change the Thick Paper BK Mode to ON.
This firmware will cam all the 1st transfer rollers against the drums when using black only mode. Even though the color 1st transfer rollers are cammed
against the drums they are not used for image development.They are only used to stiffen the transfer assembly to reduce the amount of vibration. NO COLOR
CLICKS WILL BE INCURRED.
SPECIAL NOTE : Solution contribution by Clinton Marquardt, ESS/SSD
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