US3303777A - Printing stencil and printing stencil holder with tensioning means - Google Patents

Printing stencil and printing stencil holder with tensioning means Download PDF

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Publication number
US3303777A
US3303777A US417687A US41768764A US3303777A US 3303777 A US3303777 A US 3303777A US 417687 A US417687 A US 417687A US 41768764 A US41768764 A US 41768764A US 3303777 A US3303777 A US 3303777A
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United States
Prior art keywords
stencil
printing
printing stencil
holder
support
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US417687A
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English (en)
Inventor
Feier Kurt
Werthmuller Hans
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fritz Buser AG Maschinenfabrik
Original Assignee
Fritz Buser AG Maschinenfabrik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fritz Buser AG Maschinenfabrik filed Critical Fritz Buser AG Maschinenfabrik
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Publication of US3303777A publication Critical patent/US3303777A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/34—Screens, Frames; Holders therefor
    • B41F15/36—Screens, Frames; Holders therefor flat

Definitions

  • the present invention pertains to an improved printing stencil for screen stencil printing machines as well as to an improved printing stencil assembly incorporating 'a new and improved support arrangement for the aforesaid printing stencil.
  • the present invention is also concerned with an improved method of printing upon materials by means of the aforesaid printing stencil assembly.
  • a further important object of the present invention is directed to the provision of an improved holder arrangement for printing stencils enabling the latter to be used more efliciently, thereby increasing the production capacity of the screen stencil printing machine, as well as providing a saving in space by eliminating the use of a frame.
  • Still another noteworthy object of this invention concerns an improved method of printing upon materials enabling the printing operation to be carried out more efficiently by cutting-down on the standstill times normally occurring with screen stencil printing machines using a frame.
  • inventive printing stencil can also be employed with printing processes which do not work with scrapers, wipers or equivalent coloring matter or printing ink applying means.
  • the inventive printing stencil is characterized by the features that, the support for such printing stencil is formed by two rail members which are resistant to bending in the plane of the body of the printing stencil, each rail member being connected with a respective one of the two parallel lateral sides of the aforesaid printing stencil.
  • the present invention is also concerned with a printing stencil assembly arranged at a screen stencil printing machine -using such printing stencil, and which is characterized by the features that, the rail members of the printing stencil arranged in parallelism with the lateral or lengthwise sides of the machine are connected with the stationary portion of the machine via at least one respective holder, with at least the holder at one side being equipped with tension means enabling lateral displacement of the associated rail member against the pre-stress of a spring.
  • the inventive method of printing upon a material by means of a printing stencil comprises the steps of: holding a printing stencil at a predetermined spacing above a work table carrying the material to be printed upon, resiliently supporting one lateral side of the printing stencil to enable the latter to move laterally with respect to the lengthwise direction of the work table, successively applying a force from one lateral side of the printing stencil to the other in a direction to selectively depress finite portions of the printing stencil in a direction towards said material, in order to thereby be able to successively print upon finite portions of the material.
  • FIGURE 1 schematically illustrates a cross-sectional view through a printing stencil and the screen stencil printing machine
  • FIGURE 2 illustrates the printing stencil of the invention in plan view
  • FIGURE 3 is a cross-sectional view, somewhat on an enlarged scale, through a holder unit for the printing stencil depicted in FIGURE 2.
  • the printing stencil is designated by reference numeral 1 and incorporates a stencil body member 1a formed, by way of example, from a sieve netting or screen 1b, preferably manufactured from rustproof steel for instance.
  • Two plates or rail members 2 are connected to the lateral sides 10 of the printing stencil 1 which extend parallel to the longitudinal axis of the screen stencil printing machine. It is to be understood that the rail members 2 possess a considerable rigidity or bending strength in the plane of the printing stencil 1.
  • the connection between this printing stencil 1 and the rail members 2, which should be uninterrupted throughout the entire length, can be effected by brazing or hardsoldering, adhesive, or, if desired, by clamp means.
  • a non-illustrated reinforcement can be provided at the lateral sides 1c of the printing stencil 1 extending between the rail members 2, for example in the form of flexible metal bands arranged in the plane of the aforesaid printing stencil.
  • FIG- URES 1 and 3 the rail members 2 are fastened to a respective support section or member 3, each support member 3 here being shown, by way of example, as an angle plate 3a arranged at a spacing H above the printing or Work table 4.
  • Holder means 5 and 6 are illustrated in FIGURE 2. These operably connect the associated support members 3 in adjustable position with the printing table 4.
  • One such holder means 5 is depicted in greater detail in vertical cross-section in FIG- URE 3.
  • FIGURE 3 it will be seen that a rail 7 rigidly connected at the printing table 4 extends in the lengthwise direction of this table.
  • a support 8 is guided in this rail 7.
  • the bolt members 11 are connected to a holder housing 12 which carries a threaded spindle 13 extending substantially parallel to the bolt members 11.
  • This threaded spindle 13 extends into a blind hole 14 provided at the support 8 and is threaded into a nut member 15 which is displaceable within this aforesaid blind hole, yet is secured against rotation in suitable manner-
  • a tension spring 16 is arranged between the rear wall 14a of the blind hole 14 and the nut member 15, the initial bias or pre-stress of which can be altered by rotating the threaded spindle 13.
  • the holder housing 12 inturn, carries a support 18 which is displaceable through a small distance upon two bolts 17, this support 18 being adjustable in the lengthwise direction of the work table 4 by means of a spindle 19. It will also be recognized that the support member 3 is rigidly connected to this associated support 18. Moreover, FIGURE 3 further reveals that the rail member 2 is suspended in studs or plugs 20 which are preferably provided at uniform spacing from one another at the support member 3.
  • the holder units 5' and 6' of FIGURE 2 differ from the holder units 5 and 6 only in that, here the support member 3 is directly connected with the corresponding holder housing 12.
  • the support 18 can be dispensed with since an adjustment in the lengthwise direction of the table 4, apart from the adjustment of the supports 8 which are normally rigidly clamped to the rails 7, is not necessary at both ends of the printing stencil 1.
  • the illustrated printing stencil assembly provides the additional advantage that only that range or region of the width thereof, at which the. printing operation is momentarily carried out, is located in the direct neighborhood of the material to be printed.
  • the printing stencil should be employed for electrostatic printing during which an electrostatic field must be generated between such printing stencil and the printing table. Since the field in the instant situation is formed upon a finite surface region, whereas the remaining surface of the printing stencil exhibits a relatively large spacing from the lower support surfaces, practically no losses result and it is possible to maintain in the effective region a field of practically constant strength. Additionally, the spacing of the effective stencil region from the support surface, owing to the limited surface, can be more exactly controlled than if the entire stencil surface is lowered at on time.
  • said last-mentioned holder means including a support provided with a blind hole, said tensioning means comprising a threaded spindle extending into said blind hole, a non-rotatable nut member mounted for axial movement disposed in said blind hole, said threaded spindle piercingly extending through said nut member, a spring member located within said blind hole and bearing against said nut member.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
US417687A 1963-12-13 1964-12-11 Printing stencil and printing stencil holder with tensioning means Expired - Lifetime US3303777A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1536963A CH412770A (de) 1963-12-13 1963-12-13 Druckschablone für Siebdruck

Publications (1)

Publication Number Publication Date
US3303777A true US3303777A (en) 1967-02-14

Family

ID=4408515

Family Applications (1)

Application Number Title Priority Date Filing Date
US417687A Expired - Lifetime US3303777A (en) 1963-12-13 1964-12-11 Printing stencil and printing stencil holder with tensioning means

Country Status (6)

Country Link
US (1) US3303777A (fr)
AT (1) AT258972B (fr)
BE (1) BE656413A (fr)
CH (1) CH412770A (fr)
ES (1) ES306981A1 (fr)
OA (1) OA00637A (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3482300A (en) * 1966-10-31 1969-12-09 Screen Printing Systems Inc Printing screen and method of making same
US4023488A (en) * 1974-10-22 1977-05-17 Peter Zimmer Flat stencil for imprinting textile fabrics
US4193344A (en) * 1976-09-28 1980-03-18 Svecia Silkscreen Maskiner Ab Silk screen printing machine
WO1988003092A1 (fr) * 1986-10-29 1988-05-05 Holderegger Juerg Dispositif de serigraphie comprenant des ecrans plans et flexibles
EP0325401A3 (fr) * 1988-01-18 1990-05-16 Masanao Oozeki Machine d'impression sérigraphique
US5152219A (en) * 1988-10-11 1992-10-06 Dainippon Screen Mfg., Ltd. Screen process printing apparatus using a screen reinforced by strips
US5347925A (en) * 1990-11-19 1994-09-20 Prss - Maschinen Ag Solder or conductive paste printing stencil holder
DE4342303A1 (de) * 1993-12-11 1995-06-14 Isele Herbert Schablonenspannsystem mit Rakelkopf für Schablonen- und Siebdruckanlagen
WO1997003833A1 (fr) * 1995-07-20 1997-02-06 Alpha Fry Ltd. Appareil servant a supporter et a tendre un pochoir
US5819651A (en) * 1993-05-12 1998-10-13 Zeltra, Podjetje Za Projektiranje, Proizvodnjo In Trgovino Elektrotehnike,Naklo,D.O.O. Clamping-stretching system for stencils for screen printers,with printing table for PC boards
ES2133065A1 (es) * 1995-12-22 1999-08-16 Serigrafica Tosi S R L Procedimiento para la realizacion de rejillas serigraficas giratorias.
US5983790A (en) * 1998-04-27 1999-11-16 Pnc2, Inc. Foil screen registering apparatus and method
USD668715S1 (en) * 2010-04-01 2012-10-09 Dtg International Gmbh Printing stencil
US20130068822A1 (en) * 2011-09-16 2013-03-21 Askey Computer Corp. Stencil for printing solder paste on printed circuit board

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2016377C2 (de) * 1970-04-06 1982-08-12 Albert-Frankenthal Ag, 6710 Frankenthal Siebdruckvorrichtung für flaches Druckgut
DE3017139A1 (de) * 1980-05-05 1981-11-12 Erich 8000 München Weber Siebdruckeinrichtung
DE20121710U1 (de) 2001-11-05 2003-04-24 LaserJob GmbH, 82284 Grafrath Spannrahmen mit Druckschablone

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1419663A (en) * 1921-04-19 1922-06-13 Radium Dial Company Stenciling device
US1545926A (en) * 1922-04-14 1925-07-14 Rand Kardex Company Inc Stenciling device
US1956611A (en) * 1932-02-10 1934-05-01 Heyer Corp Duplicating machine
US2018989A (en) * 1934-04-16 1935-10-29 Ceramic Process Company Apparatus for applying pigments to surfaces
US2114973A (en) * 1935-12-13 1938-04-19 Ceramic Process Company Apparatus for pigmenting surfaces

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1419663A (en) * 1921-04-19 1922-06-13 Radium Dial Company Stenciling device
US1545926A (en) * 1922-04-14 1925-07-14 Rand Kardex Company Inc Stenciling device
US1956611A (en) * 1932-02-10 1934-05-01 Heyer Corp Duplicating machine
US2018989A (en) * 1934-04-16 1935-10-29 Ceramic Process Company Apparatus for applying pigments to surfaces
US2114973A (en) * 1935-12-13 1938-04-19 Ceramic Process Company Apparatus for pigmenting surfaces

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3482300A (en) * 1966-10-31 1969-12-09 Screen Printing Systems Inc Printing screen and method of making same
US4023488A (en) * 1974-10-22 1977-05-17 Peter Zimmer Flat stencil for imprinting textile fabrics
US4193344A (en) * 1976-09-28 1980-03-18 Svecia Silkscreen Maskiner Ab Silk screen printing machine
WO1988003092A1 (fr) * 1986-10-29 1988-05-05 Holderegger Juerg Dispositif de serigraphie comprenant des ecrans plans et flexibles
EP0270485A1 (fr) * 1986-10-29 1988-06-08 Jürg Holderegger Dispositif pour sérigraphie avec des écrans plats et flexibles
US4967655A (en) * 1986-10-29 1990-11-06 Jurg Holderegger Apparatus for screen printing including a pneumatically controlled tensioning device for exchangeable flexible printing screens
EP0325401A3 (fr) * 1988-01-18 1990-05-16 Masanao Oozeki Machine d'impression sérigraphique
US5152219A (en) * 1988-10-11 1992-10-06 Dainippon Screen Mfg., Ltd. Screen process printing apparatus using a screen reinforced by strips
US5347925A (en) * 1990-11-19 1994-09-20 Prss - Maschinen Ag Solder or conductive paste printing stencil holder
US5819651A (en) * 1993-05-12 1998-10-13 Zeltra, Podjetje Za Projektiranje, Proizvodnjo In Trgovino Elektrotehnike,Naklo,D.O.O. Clamping-stretching system for stencils for screen printers,with printing table for PC boards
DE4342303A1 (de) * 1993-12-11 1995-06-14 Isele Herbert Schablonenspannsystem mit Rakelkopf für Schablonen- und Siebdruckanlagen
WO1997003833A1 (fr) * 1995-07-20 1997-02-06 Alpha Fry Ltd. Appareil servant a supporter et a tendre un pochoir
US6289804B1 (en) 1995-07-20 2001-09-18 Alpha Fry Ltd Apparatus for supporting and tensioning a stencil
US20050066827A1 (en) * 1995-07-20 2005-03-31 Williams David Godfrey Stencil and apparatus for supporting and tensioning the stencil
US7000538B2 (en) 1995-07-20 2006-02-21 Alpha Fry, Ltd. Stencil and apparatus for supporting and tensioning the stencil
ES2133065A1 (es) * 1995-12-22 1999-08-16 Serigrafica Tosi S R L Procedimiento para la realizacion de rejillas serigraficas giratorias.
US5983790A (en) * 1998-04-27 1999-11-16 Pnc2, Inc. Foil screen registering apparatus and method
USD668715S1 (en) * 2010-04-01 2012-10-09 Dtg International Gmbh Printing stencil
US20130068822A1 (en) * 2011-09-16 2013-03-21 Askey Computer Corp. Stencil for printing solder paste on printed circuit board

Also Published As

Publication number Publication date
ES306981A1 (es) 1965-04-01
OA00637A (fr) 1966-07-15
CH412770A (de) 1966-05-15
AT258972B (de) 1967-12-27
BE656413A (fr) 1965-03-16

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