惠普喷头数据手册.pdf

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O UI'lltQd States Patent [19] Bhaskar et al. [11] Patent Number: [45] Date of Patent: 5,635,968 Jun. 3, 1997 US005635968A [54] THERMAL INKJET PRINTER PRINTHEAD WITH OFFSET HEATER RESISTORS [75] Inventors: Eldurkarv Bhaskar; Mal-zio Leban; Ulrich E- Hess; Niels J~ Nielsen; Kenneth E. 'lrueba; Ellen Tappon, all of (:orvallis~ Oreg'; Duane A. Fasen, Lowland, Cola [73] Assignee: Hewlett-Packard Company. Palo Alto, Calif. [21] Appl‘ Na; 236,915 [221 Filed= Apr- 29, 1994 6 ....................................................... .. B41514 [2;] [ ] j ' ' of Search ................................ .. 50, 12, 347/9 57/ 53’ 4° 8/1993 Koizumi ................................ .. 346/140 5,235,351 .... .. 346/140 1/1994 Keefe et a1. .. 5,278,584 5,315,472 5/1994 Fong et a1. .............. .. .. 361/212 5,363,134 11/1994 Barbehenn et a1. .................... .. 347/49 FOREIGN PATENT DOCUMENTS . 0378439A3 1/1990 European Pat. on. . European Pat. THER P LI ATI N UB C O S O HP Journal Oct 1988, W. Buskirk et a1, Development of a High-Resolution Thermal InkJet Printhead, pp. 55-62. Journal Oct. 1988, J. Paul Harmon et a1. Integrating the Prmthead into the HP DeskJet Printer, pp. 62-66. HP Journal Feb. 1994, 1. Stephen Aden et al, The Third-Generation HP Thermal InkJet Pn'nthead, pp. 41-45. - HPJOUIH al May 1985’ G. Sicweu ct a1’ TheThinkJet O??ce Plate: A Part With Many Functions, pp. 33-37. HP Journal Bhaskar et a1’ Development of the Thin-Film Structure for the 'I'hinkJet Printhead, pp. 27-32. [56] References Cited U'S' PATENT DOCUMENTS Primary Examiner-Benjamin R. Fuller Assistant Examiner-Craig A. Hallacher Attorney, Agent, or Firm-Raymond A. Jenski 3,852,563 12/1974 Bohorquez et a1. .................. .. 219/216 . . . .. 346/140 4,429,321 1/1984 Matsumoto . . . . . . . . [57] ABSTRACT 7/1984 shim‘) et a1‘ ' 4’458’256 4/1985 SCI?“ 4’513’298 8/1985 Wright et . .. 4,535,343 6,1986 Matsuda at all 4,596,994 4 695,353 9/1987 Hackleman et all. (£716,421 12/1937 Ozawa et a1. ____ __ 4,719,477 4,803,500 2/1989 Milbrandt 4,812,859 3/1989 Chan et al- 4,862,197 8/1989 Sto?el . . . . . . . . . . . . l/1988 Hess . . . . . . . . . . . "" " 347/55 346,140 346/140 346,140 346,140 346/140 . . . .. 346/140 346/140 346/ 140 . . . .. 346/140 . di A pn'nthead includes a substrate with an ink feed aperture - extending from a ?rst surface to a second surface and a 1 an p ur ty of heater reslstors sposed on it. Primitive group 1ngs of the resistors are coupled to associated group power sources. All ink barrier layer is deposited on the substrate to create ink ?ring chambers for each resistor. One wall of the ink barrier has a constricted opening through which ink is supplied from the inkfeed aperture.A plurality of transistors are disposed in the substrate with each u-ansistol- output . . . . , , 4,930,915 1g; 311;? ettzll‘ 6/1990 Kikuchi et a1. III e . 4,961,103 10/1990 Saitoh et a1. 4,963,897 10/1990 Kattner . . . . . . . "" ..- 400/175 .... .. 357/59 . . . .. 346/140 coupled to an associated one of the resistors and each input coupéed t‘; °2§I°f ‘3493113 13f adqressmaig tslgt?al 11116;‘ Th; - . . . ,‘ms 15 “1" 0 61mm ‘3° mm,“ er", a feslstofs m a Pmmltlve grouplllg 855i“? 51g“ 5,103,246 4/1992 Dunn .... .. 5,206,668 346/140 4/1993 L0 et a1. ................................... .. 347/6 14 Claims, 14 Drawing Sheets 1505 150715011305 1203 1 \ 1505 1205 l ‘ \ I l 1 I \ \ \ \ \ / / / \ \ \ \ / \ \ \ / / / $1503 I 1107 1007 l 205 X I V7 \Q-4 7 '1 ‘ A 1! | \ \1 I \ \ \ \ I / / \ \ \ \ \ \ \ \ \ \ \ / / / / / ' \ ) \\ \ \ \ / / / 103 / 907 / / I 909 911 1005 / / x / 10011101/10051105 l A / J ‘ 1113

US. Patent Jun. 3, 1997 Sheet 1 of 14 5,635,968 100 103 101 FIGJ 105 201 103 211< 203 J 209 ( FIG.2

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US. Patent Jun. 3, 1997 Sheet 7 0f 14 5,635,968 S 722 RP 00o — ps2 RP RP 724 RDg RD; PG1 RP 726 RP RP RD

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