Patent ID: 8322808
Filing Date: 2012-12-04
Classification: B41J

Abstract:
1. A liquid droplet jetting apparatus which jets liquid droplets onto a plane-shaped object, comprising: a transporting mechanism which transports the object on which the liquid droplets are to be jetted, along a predetermined transporting path; a first liquid droplet jetting head including a first nozzle which is formed in the first liquid jetting head, through which the liquid droplets are jetted; a second liquid droplet jetting head including a second nozzle which is formed in the second liquid jetting head, and through which the liquid droplets are jetted, the second liquid droplet jetting head being movable between a first position facing one surface of the object transported by the transporting mechanism and a second position facing the other surface of the object transported by the transporting mechanism; and a head moving mechanism which moves the second liquid droplet jetting head between the first position and the second position; wherein the first liquid droplet jetting head is arranged to face only the one surface of the object transported by the transporting mechanism and is not movable between the first position and the second position, so that the first liquid droplet jetting head continues to face the one surface of the object even when the second liquid droplet jetting head is moved to the second position facing the other surface of the object; wherein the transporting mechanism includes a plurality of pairs of rollers arranged along the transporting path; and wherein each of the pairs of rollers includes a transporting roller having an even surface without recesses and projections, which makes a contact with the other surface of the object transported in the transporting path, and a spur-roller on which a plurality of protrusions is formed along a circumferential direction of the spur-roller, the transporting roller and the spur-roller pinching the transported object.