CN1044171C - Cathode ray tube and method of making the same - Google Patents
Cathode ray tube and method of making the same Download PDFInfo
- Publication number
- CN1044171C CN1044171C CN92114160A CN92114160A CN1044171C CN 1044171 C CN1044171 C CN 1044171C CN 92114160 A CN92114160 A CN 92114160A CN 92114160 A CN92114160 A CN 92114160A CN 1044171 C CN1044171 C CN 1044171C
- Authority
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- China
- Prior art keywords
- mark
- ray tube
- cathode ray
- priming coat
- face glass
- 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.)
- Expired - Fee Related
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/46—Machines having sequentially arranged operating stations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2209/00—Apparatus and processes for manufacture of discharge tubes
- H01J2209/46—Handling of tube components during manufacture
- H01J2209/463—Identifying or selecting component pieces
- H01J2209/466—Marking, e.g. bar-codes
Abstract
A cathode ray tube having an optically machine-readable coded marking comprising an undercoating layer of heat- and acid-resistant paint, a mark printed with heat-resistant ink on the undercoating layer and an overcoating layer of transparent heat- and acid-resistant paint covering the mark.
Description
The present invention generally speaking relates to a kind of Braun Tude And Its Preparation Method, this cathode ray tube (CRT) indicates the coded markings that can be read by the light code reader on its outer surface, more particularly, relate to a kind of CRT, the mark that this CRT goes bad the sidewall of its face glass avoiding of being marked with that the light code reader reads in the CRT manufacture process.
The manufacture process of CRT normally adopts a public CRT assembly line CRT that cast is different to combine in sequence or selectively.Make in a certain CRT on assembly line, a certain parts that use among the type CRT assemble with other parts successively.
The general practice of following so far is, the assembler checks with naked eyes in the CRT manufacture process and is attached to the mark on each parts or checks each parts that each parts itself is chosen the CRT of allocating into to be installed.But along with waiting to make the raising of CRT at increase aspect the volume and resolution aspect, these assemblers are not only in the selection of corresponding each parts with transport aspect the work but also running into very big difficulty aspect the elaboration.Therefore at present everybody in the automation of making great efforts to seek each parts machining and assembling on the CRT whole production line, comprises each procedure in the assembling process.
For realizing above-mentioned machining and the automatic purpose of assembling, except that carrying out suitable machining, assembly work should be carried out on the CRT type of making manufacturing at that time clear and correct selection can be used for the basis of each parts of the type CRT.For this understanding, therefore always CRT has the mark of representing its type on its face glass sidewall in its manufacture process just.
Be marked with the CRT of the mark that code reader reads, particularly bar code about the face glass sidewall, for example day disclosure utility model 136465/1985, United States Patent (USP) 4,374,451,4,377,890 and 4,515,867 all disclose such CRT.Among these CRT, Japanese Utility Model 136465/1985 disclosed that a kind of (to call last kind of CRT in the following text), with the heat proof material printing bar code is arranged on the sidewall of its face glass, bar code has a numeral to task the digital different of another yard with branch, the numeral that perhaps has each bar code all to increase to some extent.In addition, United States Patent (USP) 4,374,451,4,377,890 and 4,515,867 disclosed those a kind of (to call a kind of CRT in back in the following text) are similar each other, all use two kinds to form different waterglass coating on the face glass sidewall at the starting stage of CRT manufacture process formation duplex coating, form bar code with this coating of laser beam irradiation then,, thereby under the control of computer, utilize bar code control manufacture process so that in manufacture process, read bar code with code reader.
This bar code is owing to mainly be in order to writing down the state of CRT in the in check manufacture process, thereby is that starting stage in manufacture process is on the sidewall of CRT face glass.But in above-mentioned manufacture process, face glass not only will be handled but also will pass through heat treated after bar code forms with various acids, thereby bar code often goes bad, and wears away sometimes even fully.
For the foregoing reasons, so bar code prints with heat proof material, and the situation of preceding a kind of CRT comes to this, and perhaps prints bar code with laser beam, and the situation of a kind of CRT in back comes to this.
However, even worse if situation becomes, the bar code that forms on the face glass is at CRT manufacture process mesometamorphism, then before a kind of CRT still keep away the unavoidable problem that disappears and cause because of the bar code that so forms.
On the other hand, though a kind of CRT in back can avoid the bar code that so forms on face glass at CRT manufacture process mesometamorphism or wear away at least, form this bar code with laser beam and not only make production process complicated but also improved manufacturing cost.Problem is that the unit price of CRT must improve.
The objective of the invention is to provide a kind of like this Braun Tude And Its Preparation Method, this cathode-ray tube outer surface is marked with the unlikely mark that goes bad or wear away in the later manufacturing process of CRT that the light code reader reads.
Another object of the present invention provides the manufacturing equipment of a kind of CRT, and this equipment can produce the CRT with unlikely mark that goes bad or wear away with lower cost.
For reaching above-mentioned first purpose, cathode ray tube of the present invention has the coded markings that a light code reader reads, the priming coat that this mark is made up of heat-resisting acid-resistant paint, overlay on the mark layer on the priming coat and the heat-resisting acidproof transparent coating coverage that overlays on the mark layer is formed, not so this cathode ray tube also can have the mark that the seal coat be not with, code reader read.
For realizing above-mentioned first purpose, the method that the present invention makes CRT comprises following operation: coat heat-resisting acidproof priming paint; Print the mark that code reader is read with ink-jet printer and heat-resistant inks; Apply at last the cover layer of transparency and heat-proof acid-resistant paint on the above-mentioned mark, perhaps need not above-mentioned cover layer.
For realizing above-mentioned second purpose, system of the present invention comprises: and a CRT face glass pipeline and a CRT shadow mask pipeline of row arrangement; Recognition device is arranged on above-mentioned each pipeline, in order to the face glass carried of identification and the size and the type of shadow mask; Conveying device is in order to be transported to the shadow mask on the shadow mask pipeline on the face glass pipeline, so that shadow mask is fitted on its relevant face glass; The priming coat applying device is in order to the sidewall coating priming coat at the face glass that shadow mask is housed; Labelling apparatus is in order to the coded markings that reads at priming coat subscript bright dipping code reader; Cover layer forms device, in order to form transparent cover layer in case of necessity on mark; Phosphor screen forms device, forms phosphor screen in order to the downstream that forms device at face glass pipeline upper caldding layer.
The present inventor has carried out test of many times repeatedly with the people, research is printed on bar code on the CRT face glass sidewall in the later manufacturing process's mesometamorphism of CRT or the reason of disappearance with heat-resisting acid resisting material (printing ink), found that, why firmly stick to the lip-deep printing ink of face glass can be wiped from panel surface, be not because printing ink is run into the particularly dissolving during fluoric acid of acid in bar code label, but dissolve due to this surface because the ink lay by as thin as a wafer arrives the fluoric acid on the surface of face glass under mark.
Therefore,, form the heat-resisting acidproof priming coat of highly anti-fluoric acid earlier, on priming coat, print the mark that code reader is read with ink-jet printer with heat-resistant inks again, on mark, form transparent heat-resisting acid-resistant paint cover layer then as required according to the present invention.
So form and through acid resistance test, it is extremely excellent that the coded markings that the light code reader of particularly anti-fluoric acid test is read proves, promptly the mark read of the code reader of being made up of priming coat, mark and cover layer triple layer does not almost completely go bad.As for the mark that the code machine that only has the double layers of being made up of priming coat and mark can be read, then not severely rotten, fully still can be practical.Why further not rotten mark is, we think because above-mentioned cover layer and priming coat, particularly priming coat have prevented that fluoric acid from arriving the surface of face glass below mark, thereby should do not dissolved by acid on the surface, the face glass surface just can not peeled off yet.
Therefore, according to the present invention, the mark that the code reader that can prevent to mark in the CRT manufacture process is read is rotten and disappear, thereby can not can not read or misread these marks in the manufacturing process afterwards.So what so form is marked at various occasions and all can effectively be applied.
State the priming coat applying device that mark uses or set up priming coat simultaneously and during the cover layer applying device even will in the CRT manufacture process, set up to stamp, only just can achieve the goal, so these attachment devices can not make manufacturing equipment complicated or improve its manufacturing cost yet with extremely simply installing yet.So just can not increase the unit price of CRT yet.
Fig. 1 is the CRT perspective view of the embodiment of the invention, and the face glass sidewall of this CRT is marked with the coded markings that the light code reader is read.
Fig. 2 is the amplification view that is equipped with the face glass of the mark that code reader reads;
Fig. 3 marks the operation of the mark that code reader reads and the block diagram of the operation before it with the CRT manufacturing equipment.
The block diagram of Fig. 4 shows the particular location that should form on the face glass sidewall that is marked at that code reader reads.
Referring now to accompanying drawing with the explanation one embodiment of the present of invention.
Fig. 1 is the CRT of the embodiment of the invention, the coded markings that reads with the light code reader on the outer surface of this CRT face glass sidewall.Fig. 2 is the amplification view that is equipped with the face glass of the coded markings that the light code reader reads.
Among Fig. 1 and Fig. 2, numbering 1 expression face glass, 1a is the outer surface of face glass, 1b is the sidewall of face glass, 1c is the mould closing line of panel, the 2nd, and the coded markings that the light code reader is read, 2a are priming coats, 2b is a mark part, 2c is a cover layer, the 3rd, and sealing strip (sealing surface), the 4th, shadow mask, the 5th, glass awl, the 6th, neck.
Be formed with phosphor screen on the inner surface of face glass 1, the position that phosphor screen covered forms effective display area.The mark 2 that code reader reads comprises a priming coat 2a, and cover layer 2c then is located on the sidewall 1b of face glass 1, and wherein shadow mask 4 is in the phosphor screen opposite, is configured in the face glass 1.Melten glass on face glass 1 and the glass awl 5 usefulness sealing surfaces 3 couples together; In the next neck 6 of glass awl 5 continuities, an electron gun is arranged.In the case, 2 of marks that code reader reads are made up of a bar code, perhaps also have relevant numeral, character, symbol etc. except that bar code.By the way, the electron beam that emits from electron gun projects on the phosphor screen of CRT of formation like this, so phosphor screen sends light, thereby is effectively demonstrating image to display on the display area.In other words, CRT of the present invention works by the same mode of prior art CRT.
Fig. 3 is a block diagram, and the operation that the mark that the light code reader reads is provided by the CRT manufacturing equipment is described, and the operation before the above-mentioned operation is described.
Among Fig. 3, numbering 7 expression face glass conveyers, 8 shadow mask conveyers, the 9th, the shadow mask pipeline, the 10th, face glass and shadow mask assembly machine, the 11st, panel shadow mask assembly parts (PMA) conveyer, the 12nd, face glass identifier, the 13rd, the shadow mask identifier, the 14th, heater, the 15th, priming coat applicator, the 16th, ink-jet printer, the 17th, cover layer applicator, the 18th, panel shadow mask assembly parts (PMA).In addition, with Fig. 1 and Fig. 2 in identical parts all use same numbering to represent.Panel shadow mask assembly parts (PMA) 18 are meant the assembly parts of panel and shadow mask in the case.
Above-mentioned part has been arranged, and the working condition of CRT manufacturing equipment of the present invention is as follows:
Carry various types of face glasss 1 by preset program in order from the panel warehouse (not shown) of the upstream side (upper end of Fig. 3) of face glass conveyer 7.In the time of face glass that heater 14 heating is so carried 1, size, the transmissivity in the panel active surface district and the reflectivity of face glass identifier 12 identification panels and the posture that panel is got etc.In addition, the shadow mask warehouse (not shown) of synchronously depositing the shadow mask 4 that assembles from shadow mask conveyer 8 upstream sides (upper end of Fig. 3) by the action of said procedure with face glass 1 is carried on pattern the shadow mask 4 corresponding to face glass 1 in order.Shadow mask 4 is when so carrying, and shadow mask identifier 13 is just discerned the type of shadow mask, comprises the configuration of size, the spacing between each hole and shadow mask of profile, shadow mask hole of shadow mask and direction etc.
Originally, PMA18 is transported to the priming coat applicator on the precalculated position in this stage, use the Select Coat (trade (brand) name) of Nordson company or common sprayer that for example heat-resisting acidproof white paint of mainly being made up of the high polymer polyorganosiloxane resin of KanPE Sera No. 115 (trade (brand) name) of Japanese Kan-sai paint company product is coated then, form priming coat 2a.When carrying PMA18, the priming coat 2a that heater 14 just will so form carries out drying.Then PMA18 is transported in the ink-jet printer 16 on the preposition, and use with priming coat 2a and join for example for example ink-jet ink of mainly forming by the butanone resin " JP-T24 " (trade (brand) name) of Hitachi, Ltd's product of " FX series " (trade (brand) name) ink-jet printer of Hitachi, Ltd of the good light brown heat-resistant inks of lining, mark 2b is printed on the priming coat 2a.Make PMA18 pass through heat-treatment furnace 19 thereon then, be sent to again on the precalculated position of cover layer applicator 17 together with priming coat 2a that forms and mark 2b.In cover layer applicator 17, main Kanpe Sera ZC120 (trade (brand) name) the transparency and heat-proof acid-resistant paint of being made up of the high polymer polyorganosiloxane resin of for example Kansai paint company being produced with the same applicator of above-mentioned coating priming coat 2a is coated on the mark, like this, the forming process that should be attached to the coded markings that the light code reader on the face glass 1 sidewall 1b reads just finishes.In the case, why to make in above-mentioned operation that the reason of face glass 1 by heat-treatment furnace 19 is to continue to flow and do like that when the coating cover layer for the printing ink that prevents mark 2b.
In addition, the downstream of mark 2 operations that the formation code reader reads on PMA conveyer 11 disposes phosphor screen and forms the device (not shown).
Fig. 4 shows the particular location that coded markings 2 that code reader reads should form on face glass 1 sidewall 1b.
Among Fig. 4, the anti-implosion band of numbering 20 expression face glasss 1, wherein with Fig. 1 and Fig. 2 in same parts represent with same numbering.
The mark 2 that code reader to be printed reads has a bar code, and the height h of bar code strip is equal to or greater than 15 millimeters, and the width of thick bar code is 0.5 to 2.0 millimeter scope.Why select such size to be because printable that go out and make the printable angle that goes out and read needed code-bar fineness degree (fineness) of information from ink-jet printer, these values are most suitable.In addition, the mark 2 (bar code) that code reader reads mark the position should make its lower limit W depart from face glass 15 millimeters of sealing strips (sealing surface) or more than, preferably about 10 millimeters, and anti-implosion band 20 installs Shi Buying and covers the mark 2 (bar code) that code reader reads.Under the situation that the mark 2 (bar code) that code reader reads so disposes, after the actual any goods of packing into of CRT, be not difficult to read bar code with code reader.
Design to such an extent that cover under the situation of whole sideway stance 1b (this depend on the type of CRT and decide) of face glass 1 at anti-implosion band 20, the position of the mark 2 (bar code) that the code reader of this CRT reads should be selected to such an extent that make it freely in the scope that does not exceed mould joint line 1c.
In addition, face glass identifier 12 and shadow mask identifier 13 all are equipped with unshowned storage device among Fig. 3.These memory device stores should be in coded markings 2 that the code reader that forms on the face glass 1 read, identifier 12 and 13 content identified, forming moment of forming the mark 2 that code reader reads in this mark 2 processes, form the sequence number of the used manufacturing equipment of mark that code reader reads 2 etc.Storage device also provides various information, for example, corresponding to the tag content that forms on the CRT that carries at conveyer, the characteristic etc. that comprises processing and testing conditions, follows phosphor screen in the CRT manufacturing equipment handled CRT of each post code reader after forming device at the CRT conveyer.Storage device is also stored the time that content that code reader tests to CRT and CRT arrive relevant post.Required various processing and the check of carrying out of CRT that storage device just can be to be made automatically arranged.Can utilize the data of how to store to retrieve the archives of any CRT finished product in addition.
As mentioned above, in the present embodiment, the coded markings 2 that the light code reader reads is to form on the sidewall 1b of face glass 1 by following operation: coat heat-resisting acidproof white paint earlier to form priming coat 2a; Print mark 2b with ink-jet printer with heat-resistant inks; Coat transparent heat-resisting acid-resistant paint again and form cover layer 2c.Even mark 2 each later manufacturing process that mark 2 CRT that code reader reads experience formation code reader reads also undergo no deterioration.In other words, to remain its sort of state that begins to form constant for the mark 2 that reads of code reader.
By above for embodiment as can be seen, it is well-adapted forming priming coat 2a and the employed heat-resisting acid-resistant paint of cover layer 2c.The lacquer that can be used among the present invention forming priming coat 2a and cover layer 2c is not limited to that recited above that is a kind of.In addition, the air painter of being mentioned in the present embodiment only is for example, much less can also adopt above-mentioned air painter in addition.In addition, ink printer described in the present embodiment or ink-jet printer also can adopt above-mentioned printer in addition also just for example.Have, when forming priming coat 2a and mark 2b, printing ink can be selected any color for use again, as long as priming coat 2a is white or similarly light, the color of mark and priming coat 2a are white or similarly light, and the color of mark and priming coat 2a excellent fit lining get final product.
Another embodiment has cancelled cover layer applicator 17, equally also can reach the effect of the foregoing description.Although the degree of metamorphism of the mark 2 that code reader reads is bigger than previous embodiment's, its degree of metamorphism is to have reduced widely compared with the situation that does not adopt priming coat, has reached in fact unchallenged stage.
As mentioned above, in the CRT manufacture process, face glass 1 sidewall 1b goes up the coded markings 2 that formed smooth code reader reads and comprises: not so the priming coat 2a of heat-resisting acid-resistant paint, the mark 2b that prints with heat-resistant inks and the cover layer 2c of transparency and heat-proof acid-resistant paint also can include only priming coat 2a and mark 2b.Therefore can prevent to be marked at the later manufacturing process's mesometamorphism of CRT or wear away, thereby eliminate accident that can not read or misread mark in the operation afterwards.
In addition, according to the present invention,, also can adopt the priming coat and the cover layer applicator of general structure though in the process of making CRT, need to add applicator 15,17 or only add coating applicator 15.Like this, not only avoided CRT manufacturing equipment structure complicated, and can avoid the raising of its cost, promptly the unit price of CRT can not improve.
Claims (10)
1. its face glass sidewall is marked with the cathode ray tube of the mark that the light code reader reads, it is characterized in that the mark that described code reader reads comprises the priming coat of heat-resisting acid-resistant paint, at the mark that prints with heat-resisting China ink on the described priming coat with cover the acidproof cover layer of transparency and heat-proof on this mark.
2. cathode ray tube as claimed in claim 1 is characterized in that, described priming coat is white or other light color.
3. cathode ray tube as claimed in claim 1 is characterized in that described mark is a bar code.
4. cathode ray tube as claimed in claim 1 is characterized in that described mark comprises at least one bar code, and the width of the thick bar code of this bar code is in 0.5 to 2.0 millimeter scope.
5. cathode ray tube as claimed in claim 1 is characterized in that, described mark comprises character and the symbol that bar code and naked eyes can be read.
6. as each described cathode ray tube in the claim 2 to 5, it is characterized in that, the described cathode ray tube sealing strip of the position deviation of described bar code on described glass cathode ray tube facepleates sidewall is not less than 5.0 millimeters, and near from the position of anti-implosion band from described sealing strip ratio.
7. cathode ray tube as claimed in claim 1 is characterized in that described priming coat and cover layer mainly are made up of the high polymer polyorganosiloxane resin.
8. cathode ray tube as claimed in claim 1 is characterized in that described priming coat and cover layer mainly are made up of the high polymer polyorganosiloxane resin, and described heat-resistant inks mainly is made up of the butanone resin.
9. a method of making cathode ray tube is characterized in that, this method comprises following operation: the priming coat with heat-resisting acid-resistant paint is coated on the sidewall of glass cathode ray tube facepleates earlier; On described priming coat, print the mark that the bright dipping code reader reads with ink-jet printer with heat-resistant inks again; On described mark, coat transparent heat-resisting acid-resistant paint cover layer then.
10. make a kind of equipment of cathode ray tube, it is characterized in that this equipment comprises with mark that the light code reader reads: parellel arranged conveyer, in order to carry glass cathode ray tube facepleates and CRT shadow mask; Recognition device, in order to the face glass of discerning conveying like this and the type and the technical specification of shadow mask, this cognitron is used for each conveyer; Conveying device, in order to shadow mask from described shadow mask conveyor delivery to described face glass conveyer, and in order in the type and the corresponding face glass of technical specification of shadow mask being packed into shadow mask; Priming coat forms device, in order to form priming coat on the sidewall of the described face glass that described shadow mask is housed; Mark forms device, in order to form the mark that the light code reader reads on described priming coat; Cover layer forms device, in order to form transparent cover layer in case of necessity on described mark; Phosphor screen forms device, is positioned at the downstream that the above cover layer of described face glass conveyer forms device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP338016/91 | 1991-11-28 | ||
| JP33801691A JP3195011B2 (en) | 1991-11-28 | 1991-11-28 | CRT with reading mark and method of manufacturing the mark |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1073549A CN1073549A (en) | 1993-06-23 |
| CN1044171C true CN1044171C (en) | 1999-07-14 |
Family
ID=18314155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92114160A Expired - Fee Related CN1044171C (en) | 1991-11-28 | 1992-11-28 | Cathode ray tube and method of making the same |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3195011B2 (en) |
| KR (1) | KR100259937B1 (en) |
| CN (1) | CN1044171C (en) |
| FR (1) | FR2685125B1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4424596A1 (en) * | 1994-07-13 | 1996-01-18 | Nokia Deutschland Gmbh | Marking for electron gun system |
| TW358215B (en) * | 1994-08-08 | 1999-05-11 | Thomson Consumer Electronics | Coded marking on an interior surface of a CRT faceplate panel and method of marking same |
| JP2006318891A (en) * | 2005-04-11 | 2006-11-24 | Nippon Electric Glass Co Ltd | Glass panel for cathode-ray tube |
| CN104200746B (en) * | 2013-08-27 | 2017-06-27 | 成都天钥科技有限公司 | A kind of glass or the false proof preparation method for reviewing mark of ceramic |
| JP2019188736A (en) * | 2018-04-27 | 2019-10-31 | コニカミノルタ株式会社 | Ink container and ink jet recording device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4515867A (en) * | 1982-09-20 | 1985-05-07 | Rca Corporation | Method for ablating a coded marking into a glass workpiece and product thereof |
| JPS6081744A (en) * | 1983-10-11 | 1985-05-09 | Nec Corp | Cathode-ray tube |
| US4775786A (en) * | 1986-03-03 | 1988-10-04 | Daiken Kagaku Kogyo Kabushiki Kaisha | Bar code label |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4377890A (en) * | 1979-05-21 | 1983-03-29 | Rca Corporation | Method of CRT manufacture using machine readable coded markings |
| US4327283A (en) * | 1979-09-24 | 1982-04-27 | Rca Corporation | Workpiece with machine-readable marking recessed therein and method of making same |
-
1991
- 1991-11-28 JP JP33801691A patent/JP3195011B2/en not_active Expired - Fee Related
-
1992
- 1992-11-26 FR FR9214243A patent/FR2685125B1/en not_active Expired - Fee Related
- 1992-11-26 KR KR1019920022419A patent/KR100259937B1/en not_active IP Right Cessation
- 1992-11-28 CN CN92114160A patent/CN1044171C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4515867A (en) * | 1982-09-20 | 1985-05-07 | Rca Corporation | Method for ablating a coded marking into a glass workpiece and product thereof |
| JPS6081744A (en) * | 1983-10-11 | 1985-05-09 | Nec Corp | Cathode-ray tube |
| US4775786A (en) * | 1986-03-03 | 1988-10-04 | Daiken Kagaku Kogyo Kabushiki Kaisha | Bar code label |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1073549A (en) | 1993-06-23 |
| JPH05151913A (en) | 1993-06-18 |
| JP3195011B2 (en) | 2001-08-06 |
| KR930011083A (en) | 1993-06-23 |
| FR2685125B1 (en) | 1995-04-07 |
| KR100259937B1 (en) | 2000-06-15 |
| FR2685125A1 (en) | 1993-06-18 |
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| C14 | Grant of patent or utility model | ||
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| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
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