Invention Grant
- Patent Title: Method for compensating a failing nozzle
- Patent Title (中): 补偿故障喷嘴的方法
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Application No.: US14702257Application Date: 2015-05-01
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Publication No.: US09302469B2Publication Date: 2016-04-05
- Inventor: Eduard T. H. De Grijs
- Applicant: OCE-TECHNOLOGIES B.V.
- Applicant Address: NL Venlo
- Assignee: OCE-TECHNOLOGIES B.V.
- Current Assignee: OCE-TECHNOLOGIES B.V.
- Current Assignee Address: NL Venlo
- Agency: Birch, Stewart, Kolach & Birch, LLP
- Priority: EP14166824 20140502
- Main IPC: B41J29/393
- IPC: B41J29/393 ; B41J2/045 ; B41J2/21

Abstract:
A method is provided for compensating a failing nozzle in a printhead comprising a series of print elements with nozzles for operation in an inkjet printing process in which a colorant is applied for locally changing an optical density, thereby printing an image. The method comprises at least two compensation mechanisms, each providing a different amount of additional optical density in the environment of a missing dot in the printed image. A nozzle is recorded as a failing nozzle if the associated print element does not apply an ink dot within predetermined specifications. An environment density is determined in an environment of a missing dot associated with said failing nozzle. The environment density is compared with a predetermined threshold, and an appropriate compensation mechanism is selected from the at least two compensation mechanisms. The method is applied in an inkjet printing system for balancing under- and overcompensated optical density.
Public/Granted literature
- US20150314591A1 METHOD FOR COMPENSATING A FAILING NOZZLE Public/Granted day:2015-11-05
Information query
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