Patent ID: 8235609

Claim:
A method of setting a spacing between a portion of a printhead and a portion of a media support in a printing system that includes a carriage with a locking tab, a guide rail for supporting the carriage as the carriage moves the printhead along a carriage scan axis, an anti-rotation rail for limiting an amount of rotation of the carriage around the guide rail, and a rotatable spacer including a plurality of contact faces for contacting the anti-rotation rail and a plurality of catches for engaging the locking tab, the method comprising: a) assembling the printing system such that a first contact face of the rotatable spacer is in contact with the anti-rotation rail and the locking tab is engaged in a first catch; b) measuring the spacing between the portion of the printhead and the portion of the media support; and c) selecting which face of the rotatable spacer will be in contact with the anti-rotation rail, depending upon the measured spacing between the portion of the printhead and the media support, including determining whether the spacing between the portion of the printhead and the media support is within an acceptable range and selecting one of the following steps d), e) or f): d) keeping the first contact face of the rotatable spacer in contact with the anti-rotation rail if the measured spacing is within the acceptable range; e) rotating the rotatable spacer such that a second contact face of the rotatable spacer is in contact with the anti-rotation rail if the measured spacing is less than the acceptable range; or f) rotating the rotatable spacer such that a third contact face of the rotatable spacer is in contact with the anti-rotation rail if the measured spacing is greater than the acceptable range.