JPH01150559A - Recording head - Google Patents

Recording head

Info

Publication number
JPH01150559A
JPH01150559A JP62310213A JP31021387A JPH01150559A JP H01150559 A JPH01150559 A JP H01150559A JP 62310213 A JP62310213 A JP 62310213A JP 31021387 A JP31021387 A JP 31021387A JP H01150559 A JPH01150559 A JP H01150559A
Authority
JP
Japan
Prior art keywords
oxide film
transparent oxide
micro lenses
recording head
light emitting
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.)
Pending
Application number
JP62310213A
Other languages
Japanese (ja)
Inventor
Takeshi Nakazawa
中沢　猛
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP62310213A priority Critical patent/JPH01150559A/en
Publication of JPH01150559A publication Critical patent/JPH01150559A/en
Pending legal-status Critical Current

Links

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
    • B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
    • B41J2/447—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using arrays of radiation sources
    • B41J2/45—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using arrays of radiation sources using light-emitting diode [LED] or laser arrays
    • B41J2/451—Special optical means therefor, e.g. lenses, mirrors, focusing means

Abstract

PURPOSE:To obtain a small and inexpensive recording head that needs no adjustment by providing a illuminant array in which a row of luminous elements are arranged, a transparent oxide film formed on the luminous surface and micro lenses disposed in the transparent oxide film. CONSTITUTION:A recording head comprises an LED array 5 in which a row of p-type layer 3 is arranged on a n-type layer 4, a transparent oxide film 2 formed of silicon oxide or the like on the luminous surface of these layers and micro lenses formed in the transparent oxide film 2 at the positions confronting the illuminant thereof. The micro lenses 1 are masked thereover except the small circular portions on the respective luminous spots of the transparent oxide film 2, and a material functioning to improve the refractive index is dispersed over the micro lenses 1. The light released from the respective elements of the LED array 5 is refracted by means of the micro lenses 1 formed on the transparent oxide film 2 and is converged on the surface of a sensitizing drum. Thus, a recording heat that is smaller than that employing lens arrays can be provided, and the fabrication thereof is made easy.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は光プリンタなどに使用される記録ヘッドに関し
、特に、その構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording head used in an optical printer or the like, and particularly to its structure.

〔従来の技術〕[Conventional technology]

従来、この種の記録ヘッドはＬＥＤ　（発光ダイオード
）などの発光素子のアレイと、この発光部の前面にセル
フォックレンズアレイとを有するものが一般的であった
。Conventionally, this type of recording head generally has an array of light emitting elements such as LEDs (light emitting diodes) and a SELFOC lens array in front of the light emitting section.

しかしながら、セルフォックレンズアレイは例えば幅５
ｍｍ、厚み１０〜１５ｍｍ程度のもので発光部の前面に
間隔５Ｂ程度に配置するものであるため、大形となり、
かつ発光素子との組合せ調整の必要があるという欠点が
あった。However, the SELFOC lens array is e.g.
mm, thickness of about 10 to 15 mm, and is placed in front of the light emitting part at a distance of about 5B, so it is large.
Another disadvantage is that it requires adjustment in combination with a light emitting element.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

本発明の目的は上記の欠点すなわち、形状が大形となり
、組合せ調整が必要であるなどの問題点を解決した記録
ヘッドを提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a recording head that solves the above-mentioned drawbacks, such as the large size and the need for combination adjustment.

〔問題点を解決するための手段〕[Means for solving problems]

本発明は上述した問題点を解決するために、ＬＥＤなど
の発光素子を１列に並べた発光体アレイと、この発光面
上に形成される透明酸化膜と、この透明酸化膜内の発光
素子に対応する位置に形成されたマイクロレンズとから
なる構成を採用するものである。In order to solve the above-mentioned problems, the present invention includes a light emitter array in which light emitting elements such as LEDs are arranged in a row, a transparent oxide film formed on the light emitting surface, and a light emitting element within the transparent oxide film. A configuration consisting of microlenses formed at positions corresponding to the microlenses is adopted.

〔作用〕[Effect]

本発明は上述のように構成したので、発光素子からの光
は透明酸化膜内のマイクロレンズで屈折して光プリンタ
の感光ドラムなどの表面に集光する。Since the present invention is configured as described above, the light from the light emitting element is refracted by the microlens within the transparent oxide film and focused on the surface of the photosensitive drum of the optical printer.

〔実施例〕〔Example〕

次に、本発明の実施例について図面を参照して説明する
。Next, embodiments of the present invention will be described with reference to the drawings.

本発明の一実施例を縦断面図で１ドツト分を示す第１図
および発光方向から見た平面図で示す第２図を参照する
と、本発明の記録ヘッドはｎ型層４上にｐ型層を１列に
並べて配置したＬＥＤアレイ５と、この発光面上に形成
された酸化シリコンなどの透明酸化膜２と、この透明酸
化膜２の発光体に対応した位置に形成されたマイクロレ
ンズ１とからなっている。そして、このマイクロレンズ
１は透明酸化膜２の発光点上の小円の部分を除いてマス
キングを行い、屈折率を高める材料を拡散させる方式な
どによって形成されることができる。Referring to FIG. 1, which shows one dot in a longitudinal cross-sectional view, and FIG. 2, which shows a plan view from the light emission direction, the recording head of the present invention has a p-type layer on an n-type layer 4. An LED array 5 in which layers are arranged in a row, a transparent oxide film 2 such as silicon oxide formed on this light emitting surface, and a microlens 1 formed in a position corresponding to the light emitting body of this transparent oxide film 2. It consists of The microlens 1 can be formed by masking the transparent oxide film 2 except for the small circular portion above the light emitting point, and diffusing a material that increases the refractive index.

次に本実施例の動作について説明する。Next, the operation of this embodiment will be explained.

は透明酸化膜２内に形成された各素子に対応する夫々の
マイクロレンズによって屈折され、目的の感光ドラムの
表面などに集光する。The light is refracted by each microlens corresponding to each element formed in the transparent oxide film 2, and focused on the target surface of the photosensitive drum.

したがって、従来のレンズアレイを用いる場合に比較し
て小形になり、かつ組立も容易になるという利点がある
。Therefore, compared to the case of using a conventional lens array, it has the advantage of being smaller and easier to assemble.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明によれば、発光素子を１列に
並べた発光体アレイと、この発光面上に形成される透明
酸化膜と、この透明酸化膜内のマイクロレンズとを有す
ることにより、小形で調整の必要なく、安価な記録ヘッ
ドが得られるという効果がある。As explained above, according to the present invention, by having a light emitter array in which light emitting elements are arranged in a row, a transparent oxide film formed on this light emitting surface, and a microlens within this transparent oxide film, This has the advantage of providing a compact, inexpensive recording head that does not require adjustment.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、本発明の一実施例の縦断面図、第２図は、第
１図の平面図である。 １・・・・・・マイクロレンズ、２・・・・・・透明酸
化膜、３・・・・・・ｐ型層、４・・印・ｎ型層、５・
川・・ＬＥＤアレイ。 代理人　′弁理士　　内　原　　　晋FIG. 1 is a longitudinal sectional view of one embodiment of the present invention, and FIG. 2 is a plan view of FIG. 1. 1... Microlens, 2... Transparent oxide film, 3... P-type layer, 4... Mark n-type layer, 5...
River...LED array. Agent: Patent Attorney Susumu Uchihara

Claims (1)

【特許請求の範囲】[Claims] ＬＥＤなどの発光素子アレイと、この発光素子アレイの
発光部の前面に集光のためのレンズアレイとを有する光
プリンタなどの記録ヘッドにおいて、前記発光素子の発
光部の上面に透明酸化膜と、この透明酸化膜内の発光素
子に対応する位置に形成されたマイクロレンズとを設け
、前記レンズアレイを除いたことを特徴とする記録ヘッ
ド。In a recording head such as an optical printer having a light emitting element array such as an LED and a lens array for condensing light on the front surface of the light emitting part of the light emitting element array, a transparent oxide film is provided on the upper surface of the light emitting part of the light emitting element; A recording head characterized in that the transparent oxide film is provided with a microlens formed at a position corresponding to the light emitting element, and the lens array is removed.
JP62310213A 1987-12-07 1987-12-07 Recording head Pending JPH01150559A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62310213A JPH01150559A (en) 1987-12-07 1987-12-07 Recording head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62310213A JPH01150559A (en) 1987-12-07 1987-12-07 Recording head

Publications (1)

Publication Number Publication Date
JPH01150559A true JPH01150559A (en) 1989-06-13

Family

ID=18002557

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62310213A Pending JPH01150559A (en) 1987-12-07 1987-12-07 Recording head

Country Status (1)

Country Link
JP (1) JPH01150559A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5475417A (en) * 1991-10-25 1995-12-12 Rohm Co., Ltd. LED array printhead and method of adjusting light luminance of same
US5530268A (en) * 1993-10-20 1996-06-25 Oki Electric Industry Co., Ltd. Light-emitting diode array with anti-reflection coating providing reduced internal reflection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5475417A (en) * 1991-10-25 1995-12-12 Rohm Co., Ltd. LED array printhead and method of adjusting light luminance of same
US5530268A (en) * 1993-10-20 1996-06-25 Oki Electric Industry Co., Ltd. Light-emitting diode array with anti-reflection coating providing reduced internal reflection

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