Patent ID: 9440814
Filing Date: 2016-09-13
CPC Classification: B41J,B65H,G03G

Claim Text:
1. A method for mitigating media wrinkle resulting from decurler contamination in an aqueous ink printer which conveys media having a printing operation which can be cycled down by an operator, comprising: providing a transport path configured to convey media through the printer in a process direction; providing a printhead assembly configured with printheads to eject drops of aqueous ink onto media conveyed by the transport path past the printhead assembly in the process direction; providing a decurler in said transport path downstream of said printhead assembly, said decurler including an indenting roller and a conformable roller positioned in a first contacting and home position for indentation while media is conveyed through said printer and a non-contacting position with respect to each other once said printer is cycled down; cycling said printer UP to feed said media from a stack; cycling said printer down in response to observing contamination on said indenting roller causing wrinkle in media exiting said printer; cycling said printer up to resume feeding said media from said stack resulting in said indenting roller and said conformable roller being positioned in a second contacting position; providing a cam and initiating movement of said conformable roller toward said indenting roller with said cam to position said indenting roller and conformable roller into said second contacting position; providing a speed sensor connected to said decurler and adapted to send signals indicating said conformable roller and said indenting roller are in said second contacting position and are both moving at the same speed; and providing a controller adapted to receive said signals from said speed sensor and in response thereto establish said second contacting position as a second home position for indentation of said indenting roller and conformable roller wherein a thickness of said contamination on said indenting roller separates said indenting roller from said conformable roller in said second home position.