US 8,573,721 B2Granted

Method of increasing the life of a drum maintenance unit in a printer

AssigneeXerox Corporation

InventorMichael Cameron Gordon

Life of this patent

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Abstract

In a method of operating a printer, a release agent application system is operated to conserve release agent. The method of operation rotates the image receiving member that receives the release agent at a slower speed to reduce the amount of release agent applied to the image receiving member at select times. Thus, the release agent supply in the release agent application system lasts longer. For every page that is preceded by this method of image receiving member preparation, image gloss is increased and simplex and duplex image transfer efficiency is improved.

Claims3

Dependent claims

A printer comprising:

a rotatable image receiving member having a surface on which ink images are formed;
at least one printhead configured to eject ink onto the surface of the rotatable image receiving member;
a release agent application system including:
a reservoir containing a supply of release agent;
an applicator configured to move into and out of contact with the surface of the rotatable image receiving member to enable the applicator to apply release agent from the reservoir to the surface when the applicator contacts the surface of the image receiving member;
and
a metering blade configured to move into and out of contact with the surface of the rotatable image receiving member to enable the metering blade to spread the release agent applied to the surface of the rotatable image receiving member;
a controller operatively connected to the image receiving member, the applicator, and the metering blade, the controller being configured to perform a maintenance operation in response to the printer entering an idle state by operating the release agent application system to:
rotate the image receiving member at a first velocity;
move the metering blade into contact with the surface of the rotatable image receiving member and to move the applicator into contact with the surface of the rotatable image receiving member until a predetermined distance has been traveled by the rotating image receiving member at which time the controller moves the applicator out of contact with the surface of the image receiving member;
rotate the image receiving member at a second velocity that is greater than the first velocity after the applicator is disengaged from the surface of the rotatable image receiving member and while the metering blade contacts the surface of the rotatable image receiving member,
move the metering blade out of contact with the surface of the rotatable image receiving member after the rotation of the image receiving member reaches the second velocity;
prepare the surface of the rotatable image receiving member for a first page of a first print job with a blade only maintenance cycle by rotating the image receiving member at a third velocity that is greater than the first velocity,
move the metering blade into engagement with the surface of the rotatable image receiving member while maintaining the applicator out of contact with the surface of the rotatable image receiving member, and
move the metering blade out of contact with the surface of the rotatable image receiving member after a predetermined distance has been traveled by the rotatable image receiving member.

12 more elements

Dependencies are inferred from the claim text.

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Abstract

A printer comprising:

a rotatable image receiving member having a surface on which ink images are formed;
at least one printhead configured to eject ink onto the surface of the rotatable image receiving member;
a release agent application system including:
a reservoir containing a supply of release agent;
an applicator configured to move into and out of contact with the surface of the rotatable image receiving member to enable the applicator to apply release agent from the reservoir to the surface when the applicator contacts the surface of the image receiving member;
and
a metering blade configured to move into and out of contact with the surface of the rotatable image receiving member to enable the metering blade to spread the release agent applied to the surface of the rotatable image receiving member;
a controller operatively connected to the image receiving member, the applicator, and the metering blade, the controller being configured to perform a maintenance operation in response to the printer entering an idle state by operating the release agent application system to:
rotate the image receiving member at a first velocity;
move the metering blade into contact with the surface of the rotatable image receiving member and to move the applicator into contact with the surface of the rotatable image receiving member until a predetermined distance has been traveled by the rotating image receiving member at which time the controller moves the applicator out of contact with the surface of the image receiving member;
rotate the image receiving member at a second velocity that is greater than the first velocity after the applicator is disengaged from the surface of the rotatable image receiving member and while the metering blade contacts the surface of the rotatable image receiving member,
move the metering blade out of contact with the surface of the rotatable image receiving member after the rotation of the image receiving member reaches the second velocity;
prepare the surface of the rotatable image receiving member for a first page of a first print job with a blade only maintenance cycle by rotating the image receiving member at a third velocity that is greater than the first velocity,
move the metering blade into engagement with the surface of the rotatable image receiving member while maintaining the applicator out of contact with the surface of the rotatable image receiving member, and
move the metering blade out of contact with the surface of the rotatable image receiving member after a predetermined distance has been traveled by the rotatable image receiving member.

12 more elements