Printing device to skew media

Patent metadata

Field	Value
Publication number	US-11449722-B2
Application number	US-201817257874-A
Country	US
Kind code	B2
Filing date	Dec 20, 2018
Priority date	Dec 20, 2018
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

A printing device to skew print media in accordance with pre-determined offsets, in order to assist a user to delineate the print media of successive print jobs.

First claim

What is claimed is:

1. A printing device comprising:
a sensor;
a drive system to drive a media along a media path from a media source to an output region;
an image rendering sub-system; and
a controller to:
detect, using the sensor, an alignment of the media including first media of a first output job and second media of a second output job that are successive output jobs;
cause the drive system to:
skew the first media to a predefined media offset position in a sequence of multiple possible predefined media offset positions including a leftward media offset position that is a number of non-zero degrees leftward of a media path axis and a rightward media offset position that is a number of non-zero degrees rightward of the media path axis as the first media is driven to the image rendering sub-system, and
skew the second media to an alternative predefined media offset position that is the next predefined media offset position in the sequence as the second media is driven to the image rendering sub-system; and

cause the image rendering sub-system to:
orient a first output image formed on the first media based on the predefined media offset position, and
orient a second output image formed on the second media based on the alternative predefined media offset position; and
output at the output region:
the first media, with the first output image, at the predefined media offset position, and
the second media, with the second output image, at the alternative predefined media offset position.

2. The printing device of claim 1 , wherein the drive system includes a first roller and a second roller, positioned to move the media through the media path.

3. The printing device of claim 2 , wherein the controller causes the drive system to skew the media by altering at least one of a rotational speed or direction of rotation of at least one of the rollers.

4. A method for offsetting media, the method comprising:
detecting, using a sensor, an alignment of a media that is received and driven along a media path, the media path extending from a media source to an output region, wherein the media includes first media of a first output job and second media of a second output job that are successive output jobs;
causing a drive system to skew:
the first media to a predefined media offset position included in a sequence of multiple possible predefined media offset positions including a leftward media offset position that is a number of non-zero degrees leftward of a media path axis and a rightward media offset position that is a number of non-zero degrees rightward of the media path axis as the media is driven to an image rendering sub-system, and
the second media to an alternative predefined media offset position that is the next predefined media offset position included in the sequence as the second media is driven to the image rendering sub-system; and

causing the image rendering sub-system to:
orient a first output image that is formed on the first media based on the predefined media offset position, and
orient a second output image formed on the second media based on the alternative predefined media offset position; and

wherein the drive system is to output:
the first media, with the output image, to have the predefined media offset position at the output region, and
the second media, with the second output image, to have the alternative predefined media offset position at the output region.

5. The method of claim 4 , further comprising:
detecting, using the sensor, an initial skew of the media; and
causing the drive system to increase a degree of the initial skew of the media.

6. The method of claim 4 , wherein the predefined media offset position is the leftward media offset position or the rightward media offset position.

7. The method of claim 4 , wherein the drive system includes a first roller and a second roller, positioned to move the media through the media path.

8. The method of claim 7 , wherein causing the drive system to skew the media includes altering at least one of a rotational speed or direction of rotation of at least one of the rollers.

9. The printing device of claim 1 , wherein:
the sensor is to detect an initial skew of the media; and
the drive system is to increase a degree of the initial skew of the media.

10. The printing device of claim 1 , wherein the predefined media offset position is the leftward media offset position or the rightward media offset position.

11. A controller for a printing device, the controller comprising:
a processor; and
a memory to store a set of instructions;
wherein the processor accesses the set of instructions from the memory to:
detect, using a sensor, an alignment of a media as the media is received and driven, by a drive system, along a media path, wherein the media includes first media of a first output job and second media of a second output job that are successive output jobs;
responsive to a setting, control a skew that is applied to the media by the drive system as the media is driven along the media path, the skew causing:
the first media to have a predefined media offset position included in a sequence of multiple possible predefined media offset positions including a leftward media offset position that is a number of non-zero degrees leftward of a media path axis and a rightward media offset position that is a number of non-zero degrees rightward of the media path axis as the media is received by an image rendering sub-system of the printing device, and
the second media to have an alternative predefined media offset position that is the next predefined media offset position in the sequence; and

cause the image rendering sub-system to:
orient a first output image formed on the first media of the first output job based on the predefined media offset position, and
orient a second output image formed on the second media based on the alternative predefined media offset position.

12. The controller of claim 11 , wherein the controller is to:
detect, using the sensor, an initial skew of the media; and
control the skew by increasing a degree of the initial skew to skew the media to the predefined media offset position.

13. The controller of claim 11 , wherein the predefined media offset position is the leftward media offset position or the rightward media offset position.

Assignees

• Hewlett Packard Development Co

Inventors

• Ellis Daniel Scott
• Beemer Darryl L
• Godderidge Gary L

Classifications

• B41J11/0095 Primary

  Detecting means for copy material, e.g. for detecting or sensing presence of copy material or its leading or trailing end · CPC title

• G06K15/16 Primary

  Means for paper feeding or form feeding · CPC title

• B41J13/32

  Means for positioning sheets in two directions under one control, e.g. for format control or orthogonal sheet positioning · CPC title

• B65H7/14

  by photoelectric feelers or detectors · CPC title

• G06K15/1809

  relating to the printing process · CPC title