Registration system with a spline and yoke

Patent metadata

Field	Value
Publication number	US-10987915-B2
Application number	US-201916380160-A
Country	US
Kind code	B2
Filing date	Apr 10, 2019
Priority date	Apr 10, 2019
Publication date	Apr 27, 2021
Grant date	Apr 27, 2021

Abstract

A registration system for a printing device and a method for controlling the same are disclosed. For example, the registration system includes a lead screw motor, a lead screw coupled to the lead screw motor, and a carriage coupled to the lead screw. The carriage includes two drive rollers, wherein each drive roller is coupled to a respective splined shaft coupled to a respective yoke, wherein the respective yoke is coupled to a drive pulley and a drive motor that is in a fixed position, wherein movement of the carriage causes the respective splined shaft of the two drive rollers to move guided by the respective yoke.

First claim

What is claimed is:

1. A registration system for a printing device, comprising:
a lead screw motor;
a lead screw coupled to the lead screw motor; and
a carriage coupled to the lead screw, the carriage comprising:
two drive rollers, wherein each drive roller is coupled to a respective splined shaft coupled to a respective yoke, wherein the respective yoke is coupled to a drive pulley and a drive motor that is in a fixed position, wherein movement of the carriage causes the respective splined shaft of the two drive rollers to move guided by the respective yoke.

2. The registration system of claim 1 , wherein the respective splined shaft comprises a shaped outer circumference and the respective yoke comprises an internal circumference having a shape that corresponds to the shape of the outer circumference of the respective splined shaft.

3. The registration system of claim 2 , wherein the shaped outer circumference comprises raised ridges that run along a length of the respective splined shaft.

4. The registration system of claim 3 , wherein a combined length of the respective splined shaft and the respective yoke of the two drive rollers is approximately equal to a length of the lead screw.

5. The registration system of claim 1 , wherein the drive motor causes the drive pulley to rotate the respective yoke, which causes the respective splined shaft to rotate each drive roller.

6. The registration system of claim 1 , wherein the respective yoke guides movement of the respective splined shaft along a length into or out of a hollow volume of the respective yoke.

7. The registration system of claim 1 , wherein movement of the carriage is controlled by rotation of the lead screw by the lead screw motor.

8. The registration system of claim 1 , further comprising:
a sensor to detect a position of a print media entering the registration system.

9. The registration system of claim 8 , further comprising:
a processor communicatively coupled to the sensor, the lead screw motor, and the drive motor, wherein the processor calculates a desired movement of the carriage and a rotational speed of the two drive rollers based on the position of the print media.

10. The registration system of claim 9 , wherein movement of the carriage is to adjust a lateral position of the print media.

11. The registration system of claim 9 , wherein the rotational speed of the two drive rollers is to adjust a skew of the print media.

12. The registration system of claim 2 , wherein the shaped outer circumference comprises a star shaped outer diameter and the and the shape of the internal circumference comprises a star shaped inner diameter.

Assignees

• Xerox Corp

Inventors

• Mccarthy Jacob R

Classifications

• B41F33/16

  Programming systems for automatic control of sequence of operations · CPC title

• G03G15/6561 Primary

  for sheet registration · CPC title

• G03G2215/00156

  by controlling drive mechanism · CPC title

• B41F13/12 Primary

  Registering devices · CPC title

• B41F33/14

  Automatic control of tripping devices by feelers, photoelectric devices, pneumatic devices, or other detectors · CPC title