Method and apparatus for preventing nozzle clogging in ink jet printing apparatus
US6352333B2 · kind B2 · utility
16Cited by
10References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1999 |
| Grant date | Mar 5, 2002 |
| Priority date | — |
| Expiry date | Jan 19, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/1856
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink-jet printing apparatus and method in which a head unit having at least one nozzle ejects ink drops on demand, a sheet transporting path disposed below the head unit transports a sheet through the head unit, and an ink deposit unit disposed below the sheet transporting path is arranged to directly receive ink drops ejected form the nozzle when a nozzle-clog-preventing/ink ejection operation is executed. A controller initiates and stops the nozzle-clog-preventing/ink ejection operation based on whether or not a sheet is detected by sheet detecting elements disposed adjacent to the head unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.