AU714037B2 - Means for locating an eyelid assembly to a continuous ink jet printhead - Google Patents
Means for locating an eyelid assembly to a continuous ink jet printhead Download PDFInfo
- Publication number
- AU714037B2 AU714037B2 AU19932/97A AU1993297A AU714037B2 AU 714037 B2 AU714037 B2 AU 714037B2 AU 19932/97 A AU19932/97 A AU 19932/97A AU 1993297 A AU1993297 A AU 1993297A AU 714037 B2 AU714037 B2 AU 714037B2
- Authority
- AU
- Australia
- Prior art keywords
- eyelid
- catcher
- assembly
- eyelid assembly
- linkage mechanism
- Prior art date
- 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.)
- Ceased
Links
- 210000000744 eyelid Anatomy 0.000 title claims description 56
- 238000007639 printing Methods 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000007641 inkjet printing Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
- B41J2/16505—Caps, spittoons or covers for cleaning or preventing drying out
- B41J2/16508—Caps, spittoons or covers for cleaning or preventing drying out connected with the printer frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/1714—Conditioning of the outside of ink supply systems, e.g. inkjet collector cleaning, ink mist removal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/18—Ink recirculation systems
- B41J2/185—Ink-collectors; Ink-catchers
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Ink Jet (AREA)
Description
1
AUSTRALIA
PATENTS ACT 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT
ORIGINAL
a a. Name of Applicant/s: Actual Inventor/s: Address of Service: Invention Title: Scitex Digital Printing, Inc.
Bruce A. BOWLING and Scott D. AYERS SHELSTON WATERS MARGARET STREET SYDNEY NSW 2000 "MEANS FOR LOCATING AN EYELID ASSEMBLY TO A CONTINUOUS INK JET PRINTHEAD a The following statement is a full description of this invention, including the best method of performing it known to us: (File: 19660.00) MEANS FOR LOCATING AN EYELID ASSEMBLY TO A CONTINUOUS INK JET PRINTHEAD Technical Field The present invention relates to continuous ink jet printing and, more particularly, to a method for registering the linkage that locates an eyelid assembly to a continuous ink jet printhead.
Background Art Ink jet printing systems are known in *which a printhead defines one or more rows of *orifices which receive an electrically conductive o recording fluid from a pressurized fluid supply *manifold and eject the fluid in rows of parallel streams. Printers using such printheads accomplish eoe• graphic reproduction by selectively charging and deflecting the drops in each of the streams and depositing at least some of the drops on a print receiving medium, while others of the drops strike a drop catcher device.
When the ink jet printhead is not in operation, means must be provided to seal the printhead so that ink does not dry in the catcher face area, or weep from the jets and soil the apparatus or adjacent work surfaces. It is desirable, therefore, to attach an eyelid assembly to a printhead to allow the starting and shutdown of the ink jet printer without requiring the use of a separate catch pan, which must be placed between the printhead and the recording means during startup and shutdown of the printer.
The eyelid diverts the flow of ink from a resonator back into the printhead while the printer is running but not printing. In prior art -2eyelid assemblies, screws are used to fasten pivot plates into an ink jet printhead. A fixture is used to locate these pivot plates to an unimportant part of the printhead. The optimum relationship is between the catcher and the eyelid assembly. Without this relationship, tolerance is added by the assembly of many parts. Clearance holes for securing the pivot plates with screws also add additional tolerance. Screws require multi-directional assembly instead of the desired uni-directional assembly, which adds labor costs. Furthermore, screws inherently increase part count to a product, which is also undesirable. Whatever means is used to align the catcher to the eyelid assembly, the more precise an alignment is, the better the eyelid operates.
It is seen then that there exists a need for a precise eyelid assembly registration means which can be used with continuous ink jet printheads.
.Summary of the Invention •The present invention therefore provides a means for precisely aligning an eyelid assembly to a catcher in a continuous ink jet printhead comprising: 15 an eyelid linkage mechanism associated with the eyelid assembly; •a fixture for precisely holding and locating the eyelid linkage mechanism to accurately register the eyelid assembly to the catcher; a bonding means for bonding the eyelid linkage mechanism to the printhead frame in reference to the catcher, to provide pivot areas that allow the eyelid assembly to rotate 20 in and out of the catcher; and securement means to secure the accurately registered eyelid assembly to the eyelid linkage mechanism.
In this manner, mounts and linkage for locating an eyelid assembly for a continuous ink jet printhead are precisely registered. The precision design establishes a direct locational relationship between the catcher and the eyelid assembly. This accuracy is assured by eliminating screws and their clearance holes, and by fixturing directly to the catcher via precise alignment apertures in the bottom of the catcher.
In this manner, there is provided precise registration of the linkage mechanism that locates an eyelid assembly to a continuous inkjet printhead. It is an advantage of the present invention to provide such a registration method and system wherein the optimum C relationship between the catcher and eyelid assembly is realized.
19660-00.DOC -3- Other advantages of the invention will be apparent from the following description, the accompanying drawings and the appended claims.
Brief Description of the Drawings Fig. 1 is an exploded view of an ink jet printhead structure illustrating alignment between the inkjet printhead and the eyelid assembly, in accordance with the present invention; and Fig. 2 illustrates achievement of the precision locational relationship of Fig. 1, between the eyelid assembly and the catcher, using a 0* o 19660-00.DOC r; r- s rt a-~rlr temporary fixture.
Detailed Description of the Preferred Embodiments Referring to Figs. 1 and 2, precise registration between an eyelid assembly and a continuous ink jet printhead, according to the present invention, is shown. A typical ink jet printhead, generally designated 10, includes a resonator 2, a catcher 3, and an eyelid assembly 1.
An eyelid linkage mechanism, or pivot plates 4, fasten to and travel with the ink jet printhead 10. The pivot plates are bonded into place, such as with an instant adhesive that is wicked or placed between identified bond sites 8 of 15 the eyelid linkage 4 and a printhead frame 5. The ooo pivot plates provide pivot areas that allow the eyelid assembly 1 to rotate in-and-out of the catcher 3, thereby diverting ink from the resonator 2 when actuated into the ink path and sealing 20 against the catcher 3. The eyelid assembly 1 can be oo disconnected from the printhead 10 by pulling a pivot pin 7, receivable into pivot apertures 13, from the eyelid assembly 1 and linkage plates 4.
•co The eyelid assembly 1 stays with the printer and the linkage plates go with the printhead.
Continuing with Figs. 1 and 2, the precision design according to the present invention succeeds by establishing a direct locational relationship between the catcher 3 and the eyelid assembly 1. This accuracy is ensured by eliminating screws and their clearance holes, and by fixturing directly to the catcher 3 via precise alignment holes 6 located in the bottom of the catcher 3.
Fixture 9 precisely holds and locates the eyelid links 4, and accurately registers to the catcher TT~flllJll~ii ill assembly via the catcher alignment holes 6 and associated mating pins 11. This creates the most accurate possible relationship between the eyelid assembly 1 and the catcher 3 by bypassing all of the hardware between these parts via the fixture. A bonding means can then be applied to bond sites 8, associated with the precisely aligned eyelid assembly 1 and catcher 3, to permanize the relationship between these parts. The bonding means can be any suitable means, including instant adhesive.
Referring to Fig. 1, the bond sites 8 ~preferably have a surface finish of 100-200 RMS to enhance mechanical interlocking of the bonding 15 means. The printhead frame 5 utilizes capillary oooo• channels 12 to feed instant adhesive between the eyelid links 4 and the printhead frame 5 to the bond sites 8. An instant adhesive can be pre-applied to the printhead frame 5 or the eyelid links 4, as long 20 as the positioning of the parts takes place before oeo the adhesive dries, typically within 45 seconds.
ooo Industrial Applicability and Advantages The present invention is useful in the field of ink jet printing, and has the advantage of maximizing print quality by allowing the print media to be particularly close to the printer. The present invention provides the further advantage of providing a precisely registered sealing surface between the eyelid assembly and the printhead.
Finally, the registration system and method of the present invention provides the advantage of eliminating screws, thereby saving labor and assembly costs.
Having described the invention in detail and by reference to the preferred embodiment thereof, it will be apparent that other modifications and variations are possible without departing from the scope of the invention defined in the appended claims.
o
Claims (6)
1. A means for precisely aligning an eyelid assembly to a catcher in a continuous ink jet printhead comprising: an eyelid linkage mechanism associated with the eyelid assembly; a fixture for precisely holding and locating the eyelid linkage mechanism to accurately register the eyelid assembly to the catcher; a bonding means for bonding the eyelid linkage mechanism to the printhead frame in reference to the catcher, to provide pivot areas o that allow the eyelid assembly to rotate in and out of the catcher; and securement means to secure the 15 accurately registered eyelid assembly to the eyelid eo.eei linkage mechanism. e
2. A means for precisely aligning an eyelid assembly to a catcher as claimed in claim 1 wherein the pivot areas comprise a pivot point where the eyelid rotates.
A means for precisely aligning an eyelid assembly to a catcher as claimed in claim 1 wherein the securement means comprises a pivot pin.
4. A means for precisely aligning an eyelid assembly to a catcher as claimed in claim 1 wherein the eyelid linkage mechanism is precisely held and located by the fixture that accurately registers to the catcher assembly via catcher alignment holes and associated mating pins.
A means for precisely aligning an eyelid assembly to a catcher as claimed in claim 1 wherein the fixture is temporary.
6. A means for precisely aligning an eyelid assembly to a catcher substantially as herein described with reference to the embodiment shown in the accompanying drawings. DATED this 30th day of April 1997. SCITEX DIGITAL PRINTING, INC. Atto~rney: STUART M, SMT **be
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US64023596A | 1996-04-30 | 1996-04-30 | |
| US08/640235 | 1996-04-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU1993297A AU1993297A (en) | 1997-11-06 |
| AU714037B2 true AU714037B2 (en) | 1999-12-16 |
Family
ID=24567398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU19932/97A Ceased AU714037B2 (en) | 1996-04-30 | 1997-04-30 | Means for locating an eyelid assembly to a continuous ink jet printhead |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0805031B1 (en) |
| JP (1) | JPH1034942A (en) |
| AU (1) | AU714037B2 (en) |
| CA (1) | CA2203954A1 (en) |
| DE (1) | DE69701163T2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6247781B1 (en) * | 1998-12-14 | 2001-06-19 | Scitex Digital Printing, Inc. | Ink jet printhead with an improved eyelid system |
| US9527319B1 (en) | 2016-05-24 | 2016-12-27 | Eastman Kodak Company | Printhead assembly with removable jetting module |
| US9566798B1 (en) | 2016-05-24 | 2017-02-14 | Eastman Kodak Company | Inkjet printhead assembly with repositionable shutter |
| US9623689B1 (en) | 2016-05-24 | 2017-04-18 | Eastman Kodak Company | Modular printhead assembly with common center rail |
| US9789714B1 (en) | 2016-10-21 | 2017-10-17 | Eastman Kodak Company | Modular printhead assembly with tilted printheads |
| US9962943B1 (en) | 2016-11-07 | 2018-05-08 | Eastman Kodak Company | Inkjet printhead assembly with compact repositionable shutter |
| US9969178B1 (en) | 2016-11-07 | 2018-05-15 | Eastman Kodak Company | Inkjet printhead assembly with repositionable shutter mechanism |
| US10052868B1 (en) | 2017-05-09 | 2018-08-21 | Eastman Kodak Company | Modular printhead assembly with rail assembly having upstream and downstream rod segments |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0026836A1 (en) * | 1979-09-24 | 1981-04-15 | International Business Machines Corporation | Ink jet printer |
| US4928115A (en) * | 1988-10-31 | 1990-05-22 | Eastman Kodak Company | Continuous ink jet printer having remotely operable print head assembly |
| US5475410A (en) * | 1992-03-19 | 1995-12-12 | Scitex Digital Printing, Inc. | Seal for ink jet printhead |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4266231A (en) * | 1979-11-01 | 1981-05-05 | International Business Machines Corp. | Ink jet with retractable electrode and secondary ink catcher |
-
1997
- 1997-04-21 DE DE1997601163 patent/DE69701163T2/en not_active Expired - Lifetime
- 1997-04-21 EP EP19970302695 patent/EP0805031B1/en not_active Expired - Lifetime
- 1997-04-29 CA CA 2203954 patent/CA2203954A1/en not_active Abandoned
- 1997-04-30 AU AU19932/97A patent/AU714037B2/en not_active Ceased
- 1997-04-30 JP JP11237897A patent/JPH1034942A/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0026836A1 (en) * | 1979-09-24 | 1981-04-15 | International Business Machines Corporation | Ink jet printer |
| US4928115A (en) * | 1988-10-31 | 1990-05-22 | Eastman Kodak Company | Continuous ink jet printer having remotely operable print head assembly |
| US5475410A (en) * | 1992-03-19 | 1995-12-12 | Scitex Digital Printing, Inc. | Seal for ink jet printhead |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2203954A1 (en) | 1997-10-30 |
| EP0805031A1 (en) | 1997-11-05 |
| AU1993297A (en) | 1997-11-06 |
| EP0805031B1 (en) | 2000-01-19 |
| DE69701163T2 (en) | 2000-09-14 |
| JPH1034942A (en) | 1998-02-10 |
| DE69701163D1 (en) | 2000-02-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGA | Letters patent sealed or granted (standard patent) |