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US4910534A Expired / Lapsed US ⏱️ 0.0 years remaining

Light emitting apparatus

Assignee: Samsung Electronics Co Ltd
•
Filing: 1989-08-29
•
Granted: 1990-03-20
•
Expires: 2009-08-29
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Abstract

Abstract A light emitting apparatus in a head of an non-impact printer using an array-mode semiconductor light emitting device and emitting a radiant light in parallel to the surface of a substrate. The improved device is capable of easily arranging a head substrate, a lens system, and a drum on a central axis thereof by adopting a method of emitting a light in parallel to said head substrate. To achieve the object the device comprises: a reflecting surface 8 formed by shaving one corner of a substrate 6 in a given angle of slope; a plurality of strip wires (W11, W12, . . . ) disposed, in parallel and a fixed interval, on uppermost surface 11 of the substrate 6, said wires each extending towards said corner from the opposite side thereof; a common electrode wire 4 disposed on said uppermost surface in parallel with said wires; and a plurality of light emitting means each disposed lowermost surface of a plurality of light emitting chips (C1, C2, . . . ), said light emitting means being disposed opposite to said reflecting surface maintaining said given angle therebetween, thereby light emitted from said light emitting means is reflected at said reflecting surface towards a direction according to said given angle.

Inventors

  • 👤 Bun-Joong Kim

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 20:31
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/315; B41J2/435; B41J2/447; B41J2/45; B41J2/32; B41J2/335; H; H10; H10H; H10H29/00; H10H29/10; H10H29/14; H10W; H10W90/00; H10W90/701; H10W90/751; H10W90/754

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 145 words
A light emitting device for use in a non-impact printer, comprising: a reflecting surface 8 formed by shaving one corner of a substrate 6 in a given angle of slope; a plurality of strip wires (W11, W12, . . . ) disposed, in parallel and a fixed interval, on uppermost surface 11 of the substrate 6, said wires each extending towards said corner from the opposite side thereof; a common electrode wire 4 disposed on said uppermost surface in parallel with said wires; and a plurality of light emitting means each disposed lowermost surface of a plurality of light emitting chips (C1, C2, . . . ), said light emitting means being disposed opposite to said reflecting surface maintaining said given angle therebetween, thereby light emitted from said light emitting means is reflected at said reflecting surface towards a direction according to said given angle.
Claim 2
Dependent Claim 145 words
A light emitting device for use in a non-impact printer, comprising: a reflecting surface 8 formed by shaving one corner of a substrate 6 in a given angle of slope; a plurality of strip wires (W11, W12, . . . ) disposed, in parallel and a fixed interval, on uppermost surface 11 of the substrate 6, said wires each extending towards said corner from the opposite side thereof; a common electrode wire 4 disposed on said uppermost surface in parallel with said wires; and a plurality of light emitting means each disposed lowermost surface of a plurality of light emitting chips (C1, C2, . . . ), said light emitting means being disposed opposite to said reflecting surface maintaining said given angle therebetween, thereby light emitted from said light emitting means is reflected at said reflecting surface towards a direction according to said given angle.
Claim 3
Dependent Claim 50 words
The light emitting device according to claim 1, wherein the angle formed between the reflecting surface 8 and the light emitting means 2 ranges from zero degree to ninety degrees, preferably forty-five degrees, so that the light emitted from the light emitting means is reflected in parallel to the substrate.
Claim 4
Dependent Claim 36 words
The light emitting device according to claim 1, wherein, for a substrate made of ceramic insulator, said reflecting surface 8 of the substrate is coated with one of either Aluminum, Copper, Silver, or Gold thin/thick film.
Claim 5
Dependent Claim 40 words
The light emitting device according to claim 1, wherein, for a substrate coated with insulator on a conductive heat-radiating plate thereof, said reflecting surface itself is polished or coated with one of either Aluminum, Copper, Silver, or Gold thin/thick film.
Claim 6
Dependent Claim 28 words
The light emitting device according to claim 1, wherein a thin film of either silicon nitride, silicon oxide, or cerium oxide is secondly coated over said reflecting surface.
Claim 7
Dependent Claim 43 words
The light emitting device according to claim 1, wherein, for a substrate coated with insulator, said substrate is Aluminum, Duralumin, Copper, or Copper compound having a characteristic of high-intensity, said insulator being one of either Polychlorinated biphenyl (PCB) insulating resin or Spin-on-Glass (SOG).

References Cited (Backward Citations)

US4779108A Cited
US4766448A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-03-19 1993-09-18 1994-03-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-03-19 1997-09-18 1998-03-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-03-19 2001-09-18 2002-03-20 $7700.00 Window Closed / Lapsed

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