Abstract: A method of printing on a recording medium using a printhead having a printhead face that includes an array of marking elements, the method includes advancing the recording medium along a medium advance direction toward a printing region; detecting with a sensor whether a portion of the recording medium is positioned such that it would be in a collision path with the printhead face if the recording medium is advanced into the printing region; and advancing the recording medium into the printing region for printing if it is detected that the recording medium would not be in a collision path with the printhead face.

Abstract: A method of controlling a maintenance operation of an inkjet printhead in an inkjet printer, the method includes providing at least one parameter of the maintenance operation as a function of humidity condition; receiving data corresponding to a current outdoor humidity condition; determining a humidity condition corresponding to the current outdoor humidity condition; and controlling the maintenance operation, wherein the at least one parameter is determined in accordance with the determined humidity condition.

Abstract: A method of controlling a maintenance operation of an inkjet printhead in an inkjet printer, the method includes providing at least one parameter of the maintenance operation as a function of humidity condition; providing a table of average humidity conditions for a geographic locale in which the printer is located; providing a current date; determining a humidity condition corresponding to the current date; and controlling the maintenance operation, wherein the at least one parameter is determined in accordance with the determined humidity condition.

Abstract: A method of printing on a recording medium using a printhead having a printhead face that includes an array of marking elements, the method includes advancing the recording medium along a medium advance direction toward a printing region; detecting with a sensor whether a portion of the recording medium is positioned such that it would be in a collision path with the printhead face if the recording medium is advanced into the printing region; and advancing the recording medium into the printing region for printing if it is detected that the recording medium would not be in a collision path with the printhead face.

Abstract: A method of controlling a maintenance operation of an inkjet printhead in an inkjet printer, the method includes providing at least one parameter of the maintenance operation as a function of humidity condition; providing a humidity sensor external to the inkjet printer; receiving data from a humidity sensor external to the inkjet printer, which data corresponds to a current indoor humidity condition where the inkjet printer is located; determining a humidity condition corresponding to the current indoor humidity condition; and controlling the maintenance operation, wherein the at least one parameter is determined in accordance with the determined humidity condition.

Abstract: A method of controlling a maintenance operation of an inkjet printhead in an inkjet printer, the method includes providing at least one parameter of the maintenance operation as a function of humidity condition; receiving data corresponding to a current outdoor humidity condition; determining a humidity condition corresponding to the current outdoor humidity condition; and controlling the maintenance operation, wherein the at least one parameter is determined in accordance with the determined humidity condition.

Abstract: A method of controlling a maintenance operation of an inkjet printhead in an inkjet printer, the method includes providing at least one parameter of the maintenance operation as a function of humidity condition; providing a table of average humidity conditions for a geographic locale in which the printer is located; providing a current date; determining a humidity condition corresponding to the current date; and controlling the maintenance operation, wherein the at least one parameter is determined in accordance with the determined humidity condition.

Abstract: A sheet transport system has an encoder roller in direct contact with the sheet media and driven by the sheet media to detect and compensate for any registration error particularly at lead and trail edges during transport of the sheet media as media enters and exits transport nips. The invention is well suited for use in controlling and monitoring paper movement in incremental advance and print systems, such as ink jet printers. A biasing member ensures that the sheet media and encoder roller are in intimate contact. Preferably, a material with a high coefficient of friction is provided on an outer periphery of the encoder roller to assist in mating of the roller with the sheet media.