Toshiba FC-22 manual Moire/lack of sharpness, Lack of sharpness

(5) Moire/lack of sharpness

		A	B
Moire
Cause/Defect area	Step	Check items	Measures	Remarks
Density reproduction	1	Image density reproduction	Perform automatic adjustment of
		defect	gamma correction.
Parameter adjustment	2	Check image processing	Check sharpness adjustment value.
value		parameters.
Printer section	3	Check printer image.	Output test print image (04-231)	When defects occur,
			for each color and check.	perform the corre-
				sponding trouble-
				shooting procedures.
	4	Adjust image processing	While checking the above encircled
		parameters.	images A and B, control moire by
			sharpness adjustment.
Lack of sharpness
Cause/Defect area	Step	Check items	Measures	Remarks
Density reproduction	1	Image density reproduction	Perform automatic adjustment of
		defect	gamma correction.
Parameter adjustment	2	Check image processing	Check sharpness adjustment value.
value		parameters.
Printer section	3	Check printer image.	Output test print image (04-231)	When defects occur,
			for each color and check.	perform the corre-
				sponding trouble-
				shooting procedures.
	4	Adjust image processing	While checking the above encircled
		parameters.	image A, modify sharpness by
			sharpness adjustment.

January 2000 © TOSHIBA TEC 4 - 61 FC-22 TROUBLESHOOTING