IP Library Granted Patent US 10,814,638
Granted Patent B2
US 10,814,638 · App. 16/507,131 · Granted Oct 27, 2020

Fluidic ejection cartridge for improved protective tape removal

Inventors: Paul W. Dryer (Lexington, KY); David E. Larose (Knoxville, TN)
Assignee: FUNAI ELECTRIC CO. LTD
B41J2/1754B41J2/17559
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Quick Facts
Patent No.
US 10,814,638
App. No.
16/507,131
Granted
Oct 27, 2020
Kind
B2
Abstract

A fluidic ejection cartridge and protective tape system therefor. The fluidic ejection cartridge includes a cartridge body for fluid having a cover closing a first end thereof, an ejection head on a second end thereof opposite the first end, and side walls attached to the first and second ends between the first and second ends. The side walls include a first side wall, a second side wall opposite the first side wall, a first end wall attached to the first and second side walls, and a second end wall opposite the first end wall attached to the first and second side walls. A single ejection head protective tape is attached to a release structure on the first side wall and to the ejection head by an adhesive.

Claims (17)

1. A fluidic ejection cartridge and protective tape system therefor, comprising:

a cartridge body for fluid having a cover closing a first end thereof, an ejection head on a second end thereof opposite the first end, and side walls attached to the first and second ends between the first and second ends, wherein the side walls comprise a first side wall, a second side wall opposite the first side wall, a first end wall attached to the first and second side walls, and a second end wall opposite the first end wall attached to the first and second side walls, and

a single ejection head protective tape attached to a release structure on the first side wall and to the ejection head by an adhesive, wherein the release structure is selected from the group consisting of a scored portion of the first side wall and a plurality of space-apart bull-nose ribs on the first side wall.

2. The fluidic ejection cartridge of claim 1 , wherein the release structure comprises a scored portion of the first side wall.

3. The fluidic ejection cartridge of claim 1 , wherein the release structure comprises a plurality of spaced-apart bull-nose ribs on the first side wall.

4. The fluidic ejection cartridge of claim 3 , wherein the plurality of spaced-apart bull-nose ribs have a score depth ranging from about 40 to about 200 microns and a spacing ranging from about 20 to about 900 microns between adjacent ribs.

5. The fluidic ejection cartridge of claim 1 , wherein the ejection head protective tape comprises a polyvinyl chloride backer and an acrylic adhesive having a 90° peel strength ranging from about 50 to about 100 Newton per meter (N/m) on an untreated, polished silicon wafer.

6. The fluidic ejection cartridge of claim 1 , wherein the ejection head protective tape covers a nozzle plate on the ejection head.

7. A fluidic ejection device comprising the fluidic ejection cartridge of claim 1 .

8. A method for improving the removal of protective tape from an ejection head of a fluidic ejection cartridge, comprising

providing a fluidic ejection cartridge with at least one side wall having a release structure on the at least one side wall, wherein the release structure is selected from the group consisting of a scored portion of the first side wall and a plurality of space-apart bull-nose ribs on the first side wall,

attaching an ejection head protective tape to the release structure on the side wall and to a nozzle plate on the ejection head using an adhesive,

wherein the fluidic ejection cartridge is devoid of a pull tape for removal of the ejection head protective tape from the fluidic ejection cartridge.

9. The method of claim 8 , wherein the release structure comprises a scored portion of the side wall.

10. The method of claim 8 , wherein the release structure comprises a plurality of spaced-apart bull-nose ribs on the first sidewall.

11. The method of claim 10 , wherein the plurality of spaced-apart bull-nose ribs have a score depth ranging from about 40 to about 200 microns and a spacing ranging from about 20 to about 900 microns between adjacent ribs.

12. The method of claim 8 , wherein the ejection head protective tape comprises a polyvinyl chloride backer and an acrylic adhesive having a 90° peel strength ranging from about 50 to about 100 Newton per meter (N/m) on an untreated, polished silicon wafer.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 3, 2025
From: FUNAI ELECTRIC CO., LTD.
To: BRADY WORLDWIDE, INC.
Reel/Frame 070724/0730 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 10, 2019
From: DRYER, PAUL W; LAROSE, DAVID E
To: FUNAI ELECTRIC CO. LTD
Reel/Frame 049709/0174 →
Cited By (1)
US 12,350,941