Toshiba e-Studio 3510c

Adjustment of the transfer belt due to environmental factors

3.5 Adjustment of the transfer belt due to environmental factors The length of the transfer belt may change depending on the environmental temperature and humidity, and this will cause change to the leading edge position of the image. Although image position adjustment has been performed at factory shipment, when the equipment is installed or any part is replaced, it is necessary to check the difference between the "05-4732-0: Reference value" and "05-4732-1: actual value" of the "Displaying corrected values of leading edge adjustment", because there may be a difference between the environment of the factory and that of the installation location. If the difference between the reference value and actual value is 10 bits or more, be sure to perform "Image location adjustment of secondary scanning direction (05-408)".

• The equipment automatically corrects the change in the leading edge position caused by any environmental change. However, readjustment for the leading edge position in the installation environment (i.e. obtaining the reference value) can make the automatic correction even more precise, since it can suppress inconsistency caused by the dispersion of units, parts and sensors.
• A difference between the reference value and actual value may occur even if the equipment has not been moved. However, you do not have to perform "05-408" every time a difference is found, if it has already been performed after installation of the equipment or replacement of parts.

Code	Adjustment item	Remarks
4732-0	Displaying corrected values of leading edge adjustment Absolute humidity reference value	Displays the absolute value of the corrected value of the lead- ing edge adjustment
4732-1	Displaying corrected values of leading edge adjustment Absolute humidity actual value	Displays the actual value of the corrected value of the leading edge adjustment
408	Image location adjustment of secondary scanning direction	Performs the image location adjustment of the secondary scanning direction (laser writing start position adjustment)

Note:

When checking "Displaying corrected values of leading edge adjustment (05-4732-0), (05-4732- 1)" and "Image location adjustment of secondary scanning direction (05-408)", be sure to do this in a few hours after the equipment has been installed or any part has been replaced. The length of the transfer belt changes slowly according to the environment, so the larger the environmental change is, the longer it takes the belt length to become stable. And if you perform this adjustment immediately after installation or replacement work, the adjustment value may not be proper, and therefore, deviation in the leading edge position is likely to occur when the equipment becomes stable.

Procedure

1. While pressing [0] and [5] simultaneously, turn the power ON.
2. Perform paper selection for the drawer, key in [98], and then press the [FAX] button to output the grid pattern (to update the actual value).
3. Key in [4732] and press the [START] button.
4. Key in [0] and press the [START] button.
5. Record the displayed "Reference value (A)" and press the [ENTER] button.
6. Key in [4732] and press the [START] button.
7. Key in [1] and press the [START] button.
8. Record the displayed "actual value (B)" and press the [ENTER] button.
9. Calculate the difference between "Reference value (A)" and "actual value (B)" to obtain "Difference (C)".

   Range of difference (C)	Remarks
   C ≤ 10	Perform the image location adjustment of the secondary scanning direction. Proceed to step (10).
   -10 < C < 10	The image location of the secondary scanning direction is set prop- erly. Proceed to step (12).
   10 ≤ C	Perform the image location adjustment of the secondary scanning direction. Proceed to step (10).

   * When the difference between "05-4732-0: Reference value" and "05-4732-1: actual value" is 10 bits, the equipment has already performed automatic correction by approx. 1 mm.
10. Key in [408] and press the [START] button.
11. Enter the adjustment value by means of the following procedure. In order to enter the adjustment value, it is necessary to key in a value other than the current one to clear the previously stored one. Then enter the value which has been displayed as the current one after keying in the code [408] again.
12. Turn the power OFF.