Ricoh DD 4450 Service Manual page 261

Hide thumbs Also See for DD 4450:
Table of Contents

Advertisement

SP Table
1.
Set SP2-34 (Printing pressure adjust) to a value of "30 rpm" (print from 30rpm).
2.
Set SP8-10 (Test patterns) to a value of "6", then press the Start key.
3.
Access SP4-91 (Ink temperature), then check the ink temperature.
4.
Make 6 copies at speed 5 (finishing with 130 rpm). Perform the adjustment below for
all 6 copies.
Trial print: 30 rpm -> 1st print: 45 rpm -> 2nd print: 60 rpm ->3rd print: 75 rpm
-> 4th print: 90 rpm -> 5th print: 105 rpm -> 6th print: 130 rpm
When the ink temperature is low (below 15 degrees) or high (28 degrees or above),
you can adjust the machine to make only 6 copies (change SP 8-23 to 'On'). Then,
the 2nd print will not be made, because it is the same speed as the first print.
Trial print: 30 rpm ->1st print: 45 rpm ->2nd print: 45 rpm ->3rd print: 60 rpm
->4th print: 75 rpm ->5th print: 90 rpm ->6th print: 105 rpm ->7th print: 130 rpm
5.
Check the area from the leading edge to about 30mm down for any doubled or
blurred images.
6.
If any are present, access SP6-125 to 131 and then input a value to adjust the
doubled or blurred images (range: -90 to 8, step: 1) for each of 6 copies samples
To adjust the distance for 30 cpm, use SP 6-125.
To adjust the distance for 45 cpm, use SP 6-126.
To adjust the distance for 60 cpm, use SP 6-127.
To adjust the distance for 75 cpm, use SP 6-128.
To adjust the distance for 90 cpm, use SP 6-129.
To adjust the distance for 105 cpm, use SP 6-130.
To adjust the distance for 130 cpm, use SP 6-131.
Higher values ([C]): Blurred images improve, doubled images tend to be more
noticeable.
Lower values ([D]): Doubled images improve, blurred images tend to be more
noticeable.
7.
Perform the adjustment again where necessary.
8.
Return SP2-34 (Printing pressure adjust) to the value it was at before the
adjustment.
6-132 Paper Regist:A4drum:15
6-133 Paper Regist:A4drum:30
6-134 Paper Regist:A4drum:45
6-135 Paper Regist:A4drum:60
C279
[-40 to 40 / 0 / pulse]
42
SM Appendix

Advertisement

Table of Contents
loading

Table of Contents