EP0228425A1 - Lighting device for typewriters or printers. - Google Patents
Lighting device for typewriters or printers.Info
- Publication number
- EP0228425A1 EP0228425A1 EP86904145A EP86904145A EP0228425A1 EP 0228425 A1 EP0228425 A1 EP 0228425A1 EP 86904145 A EP86904145 A EP 86904145A EP 86904145 A EP86904145 A EP 86904145A EP 0228425 A1 EP0228425 A1 EP 0228425A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lighting device
- cover
- typewriter
- housing
- lighting
- 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.)
- Granted
Links
- 238000005286 illumination Methods 0.000 claims abstract description 6
- 230000008719 thickening Effects 0.000 claims abstract description 5
- 239000007858 starting material Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 230000003760 hair shine Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 abstract 2
- 230000003667 anti-reflective effect Effects 0.000 abstract 1
- 238000011161 development Methods 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 5
- 230000004313 glare Effects 0.000 description 5
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000012780 transparent material 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
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/18—Mechanisms for rendering the print visible to the operator
- B41J29/19—Mechanisms for rendering the print visible to the operator with reflectors or illuminating devices
Definitions
- Illumination device for typewriters or printers
- the invention relates to a lighting device for typewriters or printers with a screen cover arranged above the typewriter or printing unit shaft.
- a lighting device for typewriters or printers with a screen cover arranged above the typewriter or printing unit shaft.
- typewriters and printers that they work as quietly as possible. While the housing walls of the typewriter or the printer hold back the sound well and additional insulation measures can be taken if necessary, the typewriter shaft, in which the paper feed with roller and guide rollers and a carriage with the printing unit are located, represents a large sound-emitting opening Soundproofing this opening is usually closed with a transparent cover made of plastic, for example acrylic glass. However, reflections often occur, which not only make it difficult to see, but can also cause annoying glare.
- the invention is thus the task zu ⁇ grunde to provide a lighting device for scream machine or printer that provides a simple way for good lighting in the 'write drive bay without interfering with itself.
- the invention is based on a lighting device of the type mentioned at the outset and is characterized in that an elongated lighting element is arranged on the cover which shines on the writing area and is shaded in the direction of the operator's eyes. Then with the setting of the glare cover the lighting can be gleich ⁇ time to adjust, and it may be an eye-friendly, sp 'iegelfill and good lighting of the writing material can be achieved. This is essentially due to the fact that the lighting comes from an area above the viewing angle. This also means that there are no shadows from parts of the writing mechanism. Developments of the invention are the subject of the dependent claims.
- the lighting fixture can be a fluorescent tube arranged in a tube made of opaque material, the tube having a light exit window directed towards the writing area. Then only the writing area is illuminated and no glare occurs.
- the use of a fluorescent tube has the advantage that the heat development remains small and because of the small diameter 1 conventional fluorescent tubes hardly disturbs the lighting device.
- the tube is expediently rotatable about its axis so that the light exit window, which expediently has the shape of a longitudinal slot, can be conveniently adjusted.
- the lighting fixture is attached in a simple manner with two clamping brackets on the front edge of the cover.
- I Q be provided the blend cover in a thickening of a lamp housing in the form of an elongated cavity, wherein in the lamp housing a fluorescent tube, preferred wise together with its starter being arranged and irradiated through a light emission window to the writing area.
- the lighting fixture is then not a separate component, but is part of the cover, preferably in such a way that the lamp housing is at least partially integrally formed with the cover.
- the glare cover contains a lighting device.
- a layperson can install the lighting device by replacing it with the normal cover.
- the fluorescent tube can either be fixed, for example
- a development of the invention provides that the screen cover has exchangeable edge parts for fastening to different types of typewriters or printers. Then need, if necessary a length adjustment of the cover, only the appropriate fasteners for each machine to be attached.
- the power supply cables for the lighting fixture can advantageously be led through an opening in the housing of the typewriter or printer, ballasts, for example a choke, being arranged in the housing.
- ballasts for example a choke
- the connection in the machine is expediently made behind its switch, so that the lighting device can be switched on and off simultaneously with the machine or the printer.
- ballast is arranged in a separate housing, which has a connecting cable for the power supply and a socket for connecting the
- the housing can stand next to the typewriter, but can also be expediently provided with latching elements for connection to the typewriter, for example by inserting the latching elements into the ventilation slots on the back of the typewriter.
- a plug-in power supply can also be used to power the lighting device. Exemplary embodiments of the invention are described below with reference to the drawing. Show it:
- FIG. 1 shows the perspective view of a typewriter with a lighting device as an exemplary embodiment of the invention
- Fig. 1; 3 shows a further exemplary embodiment of the invention, in which the lighting device is part of the cover.
- the typewriter 1 with a conventional keyboard
- a cover 3 of its typewriter shaft made of transparent material At the rear end of the cover 3, a cover 4 is pivotable stored. On its front edge, the cover 4 carries two lighting brackets 5, a lighting device in the form of a fluorescent tube
- the light emission window 8 can be a ß enlicht from Au independent, good and glare-free lighting to achieve the writing good.
- the lighting device itself can also be installed retrospectively by the respective customer service without great effort. Because of the low power consumption of the fluorescent tube 6, no disruptive heat development occurs with inadmissible heating of neighboring parts.
- the lighting device is integrated in the cover 14.
- the cover 14 has a thickening 15 on the upper front edge, in which a fluorescent tube (not visible) is arranged together with the required starter.
- a fluorescent tube (not visible) is arranged together with the required starter.
- the thinnest fluorescent tube possible is used together with the components of the starter without a housing.
- a light exit window 18 in the form of a slit is arranged in such a way that good illumination of the writing material is achieved with the aperture cover 14 in the normal setting.
- the inside of the cover 14 is black to avoid glare matted, for example by gluing on a corresponding film.
- the cover 14 has fastening eyes 16 which are designed in the same way as in the case of a normal cover. It is then without the layman
- the ballast choke for the fluorescent tube is accommodated in its own housing 17, which can either stand next to the typewriter or can also be attached to the rear of the typewriter, for example with the aid of feelers which are pressed into the ventilation slots of the typewriter.
- the housing 17 has a switch 19 with which the lighting can be switched on and off.
- a line 23 with a socket 24 is provided, which serves as a power supply serves as a typewriter.
Landscapes
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Le dispositif ci-décrit est disposé au niveau du cache de protection (4, 14) usuel au-dessus du regard du mécanisme d'écriture ou d'impression. Un tube fluorescent (6) peut être placé dans un conduit séparé (7) au niveau de l'arête frontale du cache de protection (4) ou bien integré dans un épaississement. Une fenêtre de sortie de la lumière (8) est ménagée de manière à permettre un éclairage anti-reflets de l'écriture.The device described above is arranged at the level of the usual protective cover (4, 14) above the viewing window of the writing or printing mechanism. A fluorescent tube (6) can be placed in a separate duct (7) at the front edge of the protective cover (4) or else integrated into a thickening. A light exit window (8) is provided so as to allow anti-reflective illumination of the writing.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8520058U | 1985-07-11 | ||
DE8520058U DE8520058U1 (en) | 1985-07-11 | 1985-07-11 | Lighting device for typewriters or printers |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0228425A1 true EP0228425A1 (en) | 1987-07-15 |
EP0228425B1 EP0228425B1 (en) | 1990-10-10 |
Family
ID=6783035
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86904145A Expired - Lifetime EP0228425B1 (en) | 1985-07-11 | 1986-06-30 | Lighting device for typewriters or printers |
Country Status (4)
Country | Link |
---|---|
US (1) | US4813798A (en) |
EP (1) | EP0228425B1 (en) |
DE (2) | DE8520058U1 (en) |
WO (1) | WO1987000124A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3607945A1 (en) * | 1986-03-11 | 1987-09-17 | Mannesmann Ag | OPERATING DESK FOR PRINTERS, ESPECIALLY FOR MATRIX PRINTERS |
JP6506080B2 (en) * | 2015-04-02 | 2019-04-24 | 富士通コンポーネント株式会社 | Portable printing device |
JP6900986B2 (en) * | 2015-05-22 | 2021-07-14 | セイコーエプソン株式会社 | Image forming device |
JP6596922B2 (en) * | 2015-05-22 | 2019-10-30 | セイコーエプソン株式会社 | Image forming apparatus |
JP6646492B2 (en) * | 2016-03-25 | 2020-02-14 | ローランドディー.ジー.株式会社 | Printer |
JP6794789B2 (en) * | 2016-11-09 | 2020-12-02 | セイコーエプソン株式会社 | Printing equipment |
JP6878201B2 (en) * | 2017-08-10 | 2021-05-26 | 株式会社沖データ | Inkjet printer |
JP2019130709A (en) * | 2018-01-30 | 2019-08-08 | 株式会社沖データ | Ink jet printer |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1727377A (en) * | 1928-05-25 | 1929-09-10 | Underwood Elliott Fisher Co | Typewriting machine |
US2295210A (en) * | 1940-02-21 | 1942-09-08 | Sherman Haynes | Illuminated platen |
US2670834A (en) * | 1950-12-29 | 1954-03-02 | Underwood Corp | Quiet typewriter |
US2800573A (en) * | 1953-11-12 | 1957-07-23 | William E Cole Ii | Detachable typewriter lamp |
FR1272480A (en) * | 1958-11-21 | 1961-09-29 | Explosion-proof lighting device | |
US3135372A (en) * | 1961-03-30 | 1964-06-02 | Scars Roebuck And Co | Noiseless typewriter |
US3548184A (en) * | 1968-04-16 | 1970-12-15 | Milton Fletcher | Lamp for typewriter having adjustable leg bracket mounting |
DE1917765B2 (en) * | 1969-04-08 | 1972-12-14 | Knschker, Joseph, 8961 Waltenhofen | LIGHTING DEVICE AND METHOD FOR LIGHTING INTO SUCH A TYPEWRITER |
US3720298A (en) * | 1970-11-16 | 1973-03-13 | Teletype Corp | Prism alignment means for a character at a time printer |
US4355914A (en) * | 1980-05-01 | 1982-10-26 | International Business Machines Corporation | Acoustic hood with glare shield |
CH636051A5 (en) * | 1980-05-20 | 1983-05-13 | Hermes Precisa International | TYPEWRITER. |
GB8607492D0 (en) * | 1986-03-26 | 1986-04-30 | Central Electr Generat Board | Corrosion monitoring apparatus |
-
1985
- 1985-07-11 DE DE8520058U patent/DE8520058U1/en not_active Expired
-
1986
- 1986-06-30 US US07/035,586 patent/US4813798A/en not_active Expired - Fee Related
- 1986-06-30 WO PCT/EP1986/000384 patent/WO1987000124A1/en active IP Right Grant
- 1986-06-30 EP EP86904145A patent/EP0228425B1/en not_active Expired - Lifetime
- 1986-06-30 DE DE8686904145T patent/DE3674899D1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO8700124A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0228425B1 (en) | 1990-10-10 |
DE8520058U1 (en) | 1985-08-22 |
US4813798A (en) | 1989-03-21 |
WO1987000124A1 (en) | 1987-01-15 |
DE3674899D1 (en) | 1990-11-15 |
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