Xerox 8830 Service Manual

Also see for Synergix 8830: User guide Setup guide User guide Release note Operator's manual

Xerox 8830 Service Manual Manual pdf 57 page image

Print Quality SpecificationsTest PatternsThere are nine internal test patterns that can berun from diagnostic mode [9-55]. (refer toSection 6. for details)Test Pattern 1 is used while adjusting lead edge,trail edge and side edge erase.Test Pattern 2 is used to produce horizontalblack and white horizontal/vertical bands andresolution targets.Test Pattern 3 is used to produce ROGM imagetargets and 1.25" solid area squares that are97.5 mm apart.Test Pattern 4 is used to produce a 49 mm widehorizontal black band that is 450 mm from theread edge of the print.Test Pattern 5 is used to produce solid areasquares, ROGM image targets and a grid of thinhorizontal and vertical lines.Test Pattern 6 is used to produce diagonallyplaced small ROGM targets.Test Pattern 7 is used to produce diagonalhorizontal and vertical lines that are 16.25 mmapart.Test Pattern 8 is used to produce solid blankvertical bands that are 93.5 mm wide.Test Pattern 9 is used to produce various smallROGM patterns.Solid Area Density (A)This term refers to the image density of a totallyblack portion of the print.Use a wide roll of media and run test pattern[9-55-5]. Select the black squares (A) and usethe SIR 495.01 (PN 82P520) reference scale tomeasure the density.SPECIFICATION:Media All sites equal to or greater than 1.0Solid Area Density (SAD)Film All sites equal to or greater than .85SADBackgroundThis term refers to the density of the print in anynon-image area.Use a wide roll of media and run test pattern[9-55-5]. Examine the print usingBackground Reference Scale 302.02.theSPECIFICATION:All non-image area should be no greater than3.7 at printer installation and no greater than 5.9over the life of the developer.SkipsThis term means that a print image is partiallydeleted or appears stretched at a right angle tothe media feed direction .Use a wide roll of media and run test pattern[9-55-5]. Examine the 2.0 LP/mm vertical bandlocated near the center o the print for skips orsmears.SPECIFICATION:The 2.0 LP/mm lines should be resolved.ResolutionThis term refers to the degree to which finedetails of a print are reproduced, for example,lines.Use a wide roll of media and run test pattern[9-55-5], Evaluate the resolution targets (B) ateach corner and three central locations for atotal of seven targets.SPECIFICATION:The vertical and horizontal resolution for alltargets should be equal to or greater than 4.0LP/mm.Figure 1. Test Pattern [9-55-5]1/98Print Quality Specifications