Ink jet recording apparatus and ink jet recording method
US7909449B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2008 |
| Grant date | Mar 22, 2011 |
| Priority date | — |
| Expiry date | Dec 31, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/16508
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet recording apparatus is provided with a plurality of inks and includes a unit configured to perform a recovery operation by suction of inks from a plurality of ink ejection portions using a suction cap, wherein the plurality of inks include an ink set including a combination of at least a first ink and a second ink, the first ink containing (i) a self-dispersion pigment having at least one hydrophilic group directly or through another atomic group bonded to the surface of the pigment, and (ii) ammonium ions, the second ink containing a pigment, a polymer having an acid value of 160 mg KOH/g or less, and alkali metal ions, and the suction cap used in the recovery operation is individually provided for each of the first ink and the second ink.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.