US4481881A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot melt screen printing machine
Assignee: TDK Corp
•
Filing: 1983-05-16
•
Granted: 1984-11-13
•
Expires: 2003-05-16
Abstract
Abstract In a known hot melt screen printing machine the printing ink is heated by an electrical current which is conducted through a stainless steel mesh of a screen plate. In the known machine, the printing accuracy is not good, mainly because of variation of tension and thermal expansion of the mesh. The mesh according to the present invention consists of insulating material fibers and an electroless plating layer formed on the fibers. The plating layer preferably consists of a nickel phosphorous alloy. A squeezing means for forcing the printing ink to pass through a printing pattern and/or a printing base for mounting an article to be printed are provided with a heating means. One of the advantages of the present invention is a high printing accuracy.
Inventors
- 👤 Tadao Okano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:18
CPC Classifications
B; B41; B41F; B41F15/00; B41F15/08; B41F15/0804; B41F15/0813; B41C; B41C1/00; B41C1/14; B41M; B41M1/00; B41M1/12; H; H05; H05B; H05B3/00; H05K; H05K3/00; H05K3/10; H05K3/12; H05K3/1216; H05K3/1233; H05K2201/00; H05K2201/02; H05K2201/0275; H05K2201/0281; H05K2203/00; H05K2203/11; H05K2203/1115; H05K3/1225
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
211 words
A hot melt screen printing machine having a screen plate, said screen plate comprising: a metalic frame a screen mesh fixed to said frame, said screen mesh formed from a plurality of insulating material fibers and an electroless, conductive plating layer formed on each of the fibers in first and third regions of said screen mesh, said first and third regions being separated and electrically insulated from each other by a second region, the insulating material fibers of said second region not having a conductive plating layer formed thereon, a resin coating applied onto said mesh on predetermined portions thereof, the portions of said mesh not included in said predetermined portions forming a printing pattern and electrode patterns, at least part of said screen mesh being resistance heated due to the resistance of the screen mesh; a printing base for mounting an article to be printed and a squeezing means for passing a printing ink from said screen pattern toward said article to be printed, and at least one of said printing base or said squeezing means being provided with heating means; and power supply means for supplying an electric current to said screen mesh, said power supply means having electrodes coupled to said screen mesh at said electrode patterns thereon.
Claim 2
Dependent Claim
211 words
A hot melt screen printing machine having a screen plate, said screen plate comprising: a metalic frame a screen mesh fixed to said frame, said screen mesh formed from a plurality of insulating material fibers and an electroless, conductive plating layer formed on each of the fibers in first and third regions of said screen mesh, said first and third regions being separated and electrically insulated from each other by a second region, the insulating material fibers of said second region not having a conductive plating layer formed thereon, a resin coating applied onto said mesh on predetermined portions thereof, the portions of said mesh not included in said predetermined portions forming a printing pattern and electrode patterns, at least part of said screen mesh being resistance heated due to the resistance of the screen mesh; a printing base for mounting an article to be printed and a squeezing means for passing a printing ink from said screen pattern toward said article to be printed, and at least one of said printing base or said squeezing means being provided with heating means; and power supply means for supplying an electric current to said screen mesh, said power supply means having electrodes coupled to said screen mesh at said electrode patterns thereon.
Claim 3
Dependent Claim
18 words
A hot melt screen printing machine according to claim 1, wherein said heating means is a heat-generating resistor.
Claim 4
Dependent Claim
32 words
A hot melt screen printing machine according to claim 2, wherein said heating means of said squeezing means is enclosed within the body of said squeezing means comprising an elastic heat-resistant resin.
Claim 5
Dependent Claim
22 words
A hot melt screen printing machine according to claim 3, wherein said heating means of said squeezing means is provided with notches.
Claim 6
Dependent Claim
30 words
A hot melt screen printing machine according to claim 1, wherein said heating means of said printing base is situated within the body of said printing base having a recess.
References Cited (Backward Citations)
US2731912A
Cited
FR820156A
Cited
US2239619A
Cited
US2427502A
Cited
GB768623A
Cited
US3718940A
Cited
DE2739179A1
Cited
US4239789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-13 | 1988-05-14 | 1988-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-13 | 1992-05-14 | 1992-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-13 | 1996-05-14 | 1996-11-13 | $7700.00 | Window Closed / Lapsed |