Wide area beam sensor method and apparatus for image registration calibration in a color printer
US5909235A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 26, 1995 |
| Grant date | Jun 1, 1999 |
| Priority date | — |
| Expiry date | May 26, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00042
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a color printer including an image bearing member having an imageable surface for movement along a preselected path, at least a first imaging assembly for forming sets of multiple black toner registration marks on different areas of the imageable surface, and for forming second sets of multiple non-black toner registration marks corresponding respectively to black marks in each set of the first sets of black marks so as to create a series of sets of multicolor registration marks. Each of the second sets is formed thus in accordance with a predetermined different condition of image misregistration relative to the corresponding first set of black toner marks. The color printer also includes a light source for producing a wide area beam (WAB) to illuminate each set of the series of sets of multicolor marks, and a wide area beam (WAB) sensor for measuring scattered or diffuse light reflected from each set of the illuminated series of sets of multicolor marks, and for producing an actual light reflectance measurement value from each such illuminated set. The printer further includes a comparing device for determining a degree of actual image misregistration by comparing eac…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.