Ink jet printing apparatus and wiping method therefor
AssigneeCanon Kabushiki Kaisha
InventorYohji Ara
Life of this patent
Estimating the term…
Abstract
When black ink ejected through the ejection openings of the corresponding ejection opening array of the printing head reacts with the other color inks ejected through the ejection openings of the color ejection opening arrays, then during wiping, the respective ejection opening arrays or the group of ejection opening arrays and the vicinities thereof are wiped using two blades corresponding to the black and other color ejection opening arrays, respectively, and each forming a predetermined angle with respect to a direction orthogonal to a wiping direction. Thus, each wiped-away ink or the like is collected in the portion between the black ejection opening array and the color ejection opening arrays so as to leave the corresponding ejection opening array, and is then wiped by the blades.
Claims10
An ink jet printing apparatus using a printing head having ejection openings for a plurality of inks disposed on a common ejection opening-disposed surface, the plurality of inks reacting with each other to be insolubilized, to eject inks from the printing head onto a printing medium for performing printing, said ink jet printing apparatus comprising:
- holding means for holding blades provided correspondingly to the respective ejection openings of the plurality of inks so that the blades respectively form a predetermined angle of 0° or larger with respect to a direction perpendicular to a direction of a movement of said blades for wiping and have a predetermined space between said blades in an area corresponding to the ejection openings for the plurality of inks;
- and
- wiping operation means for causing said holding means to move relatively to the printing head so that the blades wipe parts of the ejection opening-disposed surface on which corresponding the ejection openings are disposed, respectively.
A wiping method for an ink jet printing apparatus using a printing head having ejection openings for a plurality of inks disposed on a common ejection opening-disposed surface, the plurality of inks reacting with each other to be insolubilized, to eject inks from the printing head onto a printing medium for performing printing, said method comprising the steps of:
- providing holding means for holding blades provided correspondingly to the respective ejection openings of the plurality of inks so that the blades respectively form a predetermined angle of 0° or larger with respect to a direction perpendicular to a direction of a movement of said blades for wiping and have a predetermined space between said blades in an area corresponding to the ejection openings for the plurality of inks;
- causing the blades provided correspondingly to the respective ejection openings of the plurality of inks to wipe parts of the ejection opening-disposed surface on which corresponding the ejection openings are disposed, respectively;
- and
- subsequently causing a blade provided correspondingly to the ejection opening-disposed surface between the ejection openings for the plurality of inks to wipe said surface.
Dependencies are inferred from the claim text.