System for aligning a plurality of printhead modules
AssigneeSilverbrook Research Pty Ltd
InventorKia Silverbrook
Life of this patent
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Abstract
In a printing system, printhead modules with fiducials are used to misalign mounting of the modules to a support beam by a distance calculated from: the difference in coefficient of thermal expansion between the support beam and the modules; the spacing of the modules along the beam; and the difference between production temperature and operating temperature. The beam is composed of a silicon core, an outer metal shell and an elastomeric layer therebetween. The system ensures alignment of the modules at the operating temperature.
Claims5
A system for aligning a plurality of printhead modules mounted on a support member in a printer wherein the support member is a beam and the printhead modules include MEMS manufactured chips having at least one fiducial on each;
- wherein,
- the fiducials are used to misalign the printhead modules at ambient temperature by a distance calculated from:
- i) the difference in coefficient thermal expansion between the beam and the printhead chips;
- ii) the spacing of the printhead chips along the beam;
- and,
- iii) the difference between the production temperature and the operating temperature.
Dependencies are inferred from the claim text.