Fuser assemblies

Patent metadata

Field	Value
Publication number	US-10539376-B2
Application number	US-201615775999-A
Country	US
Kind code	B2
Filing date	Mar 18, 2016
Priority date	Mar 18, 2016
Publication date	Jan 21, 2020
Grant date	Jan 21, 2020

Abstract

Some examples include a fuser assembly to operate with a roller including a fuser housing, and an array of fusers disposed in the fuser housing, each fuser including a heating element exposed along a surface of the fuser housing and adjacent to an outer surface of the roller.

First claim

The invention claimed is:

1. A fuser assembly to operate with a roller, comprising:
a fuser housing; and
an array of fusers disposed in the fuser housing, wherein each fuser among the array of fusers includes:
a metal housing, a plastic mount contained within the metal housing, and a ceramic substrate attached to the plastic mount; and
a heating element disposed on the ceramic substrate and exposed along a surface of the fuser housing and adjacent to an outer surface of the roller.

2. The fuser assembly of claim 1 , wherein each of the array of fusers comprises:
the metal housing contained within the fuser housing, the metal housing open along an outward side;
and
the ceramic substrate exposed along the outward side;
wherein the heating element includes a resistive trace disposed on an outer surface of the ceramic substrate.

3. The fuser assembly of claim 1 , wherein the array of fusers extend along the fuser housing in spaced apart parallel rows.

4. The fuser assembly of claim 1 , comprising:
a tubular belt disposed around the fuser housing, wherein the tubular belt is movable along a surface of the fuser housing and the array of fusers.

5. The fuser assembly of claim 1 , wherein each of the array of fusers is moveably disposed within the fuser housing to independently apply a normal force on the roller.

6. The fuser assembly of claim 1 , wherein the array of fusers is fixedly disposed within the fuser housing.

7. The fuser assembly of claim 1 , wherein the fuser housing comprises plastic.

8. A media conditioner to operate with a printing apparatus, comprising:
a roller;
a fuser housing disposed parallel to the roller; and
an array of fusers disposed in the fuser housing, wherein each fuser among the array of fusers includes:
a metal housing and a plastic mount contained within the metal housing, and a ceramic substrate attached to the plastic mount; and
a heating element disposed on the ceramic substrate and exposed along a surface of the housing,

wherein each fuser among the array of fusers defines a contact zone disposed adjacent the roller, and
wherein the contact zone provides at least one of drying of printing fluid and smoothing fibers of a media.

9. The media conditioner of claim 8 , wherein the fuser housing is curved to correspond to the radius of the roller and to position each fuser among the array of fusers against the outer surface of the roller.

10. The media conditioner of claim 8 , comprising:
an array of rollers, and wherein the fuser housing positions each fuser among the array of fusers adjacent to a respective one of the array of rollers.

11. The media conditioner of claim 8 , wherein the fusers are movably mounted within the housing to apply a normal compressive force against the roller.

12. A method of conditioning media, comprising:
rotating a roller in a first direction;
rotationally moving a tubular belt in a second direction around an array of fusers disposed within a fuser housing, wherein each fuser among the array of fusers includes:
a metal housing and a plastic mount contained within the metal housing;
a ceramic substrate attached to the plastic mount; and
a heating element disposed on the ceramic substrate;

passing media between the array of fusers and the roller;
applying heat from the heating elements to the passing media;
applying a force to compress the media between the roller and the array of fusers;
deforming the roller against the array of fusers;
forming a contact area along each of the fusers in the array of fusers against the roller; and
using the contact area, drying a printing fluid applied to the media and smoothing fibers of the media.

13. The method of claim 12 , wherein applying heat from the heating elements includes applying heat via resistor traces disposed on each of the array of fusers.

14. The method of claim 12 , wherein applying the force includes each of the array of fusers applying a normal force toward the roller, and wherein the fuser housing is stationary.

15. The method of claim 12 , wherein applying the force includes the roller and at least one additional roller applying a normal force toward the array of fusers.

16. The fuser assembly of claim 1 , wherein each heating element among the array of heating elements is separately controllable.

17. The fuser assembly of claim 1 , wherein each fuser among the array of fusers is disposed within a different respective opening within the fuser housing.

18. The fuser assembly of claim 17 , wherein each respective heating element is disposed at the opening of the associated fuser.

19. The method of claim 12 , including independently applying heat from different respective heating elements to the passing media.

20. The method of claim 12 , including applying the force to compress the media by independently applying a force at each of a plurality of rollers toward a respective fuser among the array of fusers.

Assignees

• Hewlett Packard Development Co

Inventors

• Rasmussen Steve O

Classifications

• B41J2/435

  characterised by selective application of radiation to a printing material or impression-transfer material · CPC title

• B41J2/455

  using laser arrays {, the laser array being smaller than the medium to be recorded} · CPC title

• B41J13/076

  Construction of rollers; Bearings therefor · CPC title

• B41J11/002

  Curing or drying the ink on the copy materials, e.g. by heating or irradiating · CPC title

• F28F5/02 Primary

  Rotary drums or rollers · CPC title