Light emitting members
AssigneeHewlett-Packard Development Company, L.P.
InventorsBoris Kaziev, Yuval Efrath, Daniel Shafer
Life of this patent
Estimating the term…
Abstract
According to an example, a conditioning device includes a first light emitting member to emit light towards a first segment of a path and a second light emitting member to emit light towards a second segment of a path. The first segment of the path is upstream an engagement point of the path at which the photoconductive surface is to contact a subsequent transfer member and the second region is downstream the engagement point. The light emitted by the first light emitting member is to set the photoconductive surface at a pre-transfer voltage and the light emitted by the second light emitting member is to set the photoconductive surface at a post-transfer voltage greater than the pre-transfer voltage.
Claims14
A conditioning device comprising:
- a first light emitting member to emit light towards a photoconductive surface movable along a continuous path, the first light emitting member to emit light towards a first segment of the path located upstream an engagement point of the continuous path at which the photoconductive surface is to contact an intermediate transfer member;
- and
- a second light emitting member to emit light towards the photoconductive surface, the second light emitting member to emit light towards only a second segment of the path located downstream the engagement point,
- wherein the light emitted by the first light emitting member is to set the photoconductive surface at a pre-transfer voltage and the light emitted by the second light emitting member is to set the photoconductive surface at a post-transfer voltage greater the pre-transfer voltage.
A printing system comprising:
- an intermediate transfer member;
- a photoconductive sleeve arranged to contact the intermediate transfer member at an engagement point;
- a first light emitting member arranged to project light onto a first segment of a path for rotation of the photoconductive sleeve, the first segment of the photoconductive sleeve located upstream the engagement point;
- and
- a second light emitting member arranged to project light onto only a second segment of the path, the second segment located downstream the engagement point,
- wherein as the photoconductive sleeve rotates along the path, the first light emitting member is to set a photoconductive region of the photoconductive sleeve at a pre—transfer voltage and the second light emitting member is to set the photoconductive region at a post-transfer voltage greater than the pre-transfer voltage.
A method comprising:
- rotating a photoconductive sleeve along a rotation path;
- emitting a first light beam in a first segment of the rotation path, the first segment being upstream an engagement point in which the photoconductive sleeve contacts with an intermediate transfer member;
- and
- emitting a second light beam only in a second segment of the rotation path, the second segment being downstream the engagement point,
- wherein as the photoconductive sleeve rotates, the first light beam sets a region of photoconductive sleeve moving through the first segment at a pre-transfer voltage and the second light beam sets the region of the photoconductive sleeve moving through the second segment at a post-transfer voltage greater than the pre-transfer voltage.
Dependencies are inferred from the claim text.