Image quality matching in a mixed print engine assembly system
US8147026B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2009 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Dec 22, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J3/54
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method and system for improved image quality using an image quality matching method is used to match the optical density of single prints produced on multiple print engines by first sensing the optical density of a first image produced on a first print engine and then sensing the optical density of a second image produced on a second print engine before comparing the optical densities and determining if they are substantially equal. If they are not equal set points and exposures are adjusted on one or both print engines until the differences between the optical densities is less than 0.05, preferably 0.03. The density is changed by adjusting the initial voltage on the primary imaging member of at least one print engine and/or by adjusting the exposure of the primary imaging member of at least one print engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.