JPS63265664A - Optical printer head - Google Patents
Optical printer headInfo
- Publication number
- JPS63265664A JPS63265664A JP62101089A JP10108987A JPS63265664A JP S63265664 A JPS63265664 A JP S63265664A JP 62101089 A JP62101089 A JP 62101089A JP 10108987 A JP10108987 A JP 10108987A JP S63265664 A JPS63265664 A JP S63265664A
- Authority
- JP
- Japan
- Prior art keywords
- array chip
- led array
- sla
- pins
- fixed
- 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
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 13
- 239000000919 ceramic Substances 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 125000006850 spacer group Chemical group 0.000 claims abstract description 19
- 239000011347 resin Substances 0.000 abstract description 6
- 229920005989 resin Polymers 0.000 abstract description 6
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 238000011065 in-situ storage Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
- G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
- G06K15/12—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers
- G06K15/1238—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers simultaneously exposing more than one point
- G06K15/1242—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers simultaneously exposing more than one point on one main scanning line
- G06K15/1247—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers simultaneously exposing more than one point on one main scanning line using an array of light sources, e.g. a linear array
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Led Device Packages (AREA)
- Led Devices (AREA)
- Dot-Matrix Printers And Others (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
Abstract
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の露光用光源として使用されるＬＥ
Ｄアレイを搭載した光プリンタヘッドに関するものであ
る。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an LE used as an exposure light source of an optical printer.
The present invention relates to an optical printer head equipped with a D array.
［従来の技術］ 第２図は従来の光プリンタヘッドを示す説明図である。[Conventional technology] FIG. 2 is an explanatory diagram showing a conventional optical printer head.
Ｌ Ｅ Ｄ （Ｌｉｇｈｔ Ｅｍｌｔｔｉｎｇ Ｄｉ
ｏｄｅ）アレイチップ１３はセラミック基板１２の上に
搭載され、セラミック基板１２は固定板１１に樹脂等で
固定されている。ＬＥＤアレイチップ１３から発光され
た光を集光するためのセルフォックレンズアレイ（以下
ＳＬＡと称す）１４は、固定板１１に設けられたＳＬＡ
固定治具１５に偏心ネジ１６で固定されている。L E D (Light Emmltting Di
ode) The array chip 13 is mounted on the ceramic substrate 12, and the ceramic substrate 12 is fixed to the fixed plate 11 with resin or the like. A SELFOC lens array (hereinafter referred to as SLA) 14 for condensing light emitted from the LED array chip 13 is an SLA provided on the fixed plate 11.
It is fixed to a fixture 15 with an eccentric screw 16.
ここで、セラミック基板１２は固定板１１に樹脂等で固
定されているが、それぞれの製品によってセラミック基
板１２の高さが異なってしまうため、偏心ネジ１６で５
ＬＡ１４の高さを調整して５ＬＡ１４とＬＥＤアレイチ
ップ１３の発光面との焦点距離が最適になるよう設定し
なければならなかった。Here, the ceramic substrate 12 is fixed to the fixing plate 11 with resin or the like, but since the height of the ceramic substrate 12 differs depending on each product, the eccentric screw 16 is used to
The height of the LA 14 had to be adjusted so that the focal distance between the 5LA 14 and the light emitting surface of the LED array chip 13 was set to be optimal.
〔発明が解決しようとする問題点］
しかし、ＬＥＤアレイチップ１３の発光面と５ＬＡ１４
の間隙調整を行う場合、５ＬＡ１４からの出力光のビー
ムサイズをモニタしながらそのビームサイズが最小とな
るように偏心ネジ１６の回転角度を調整しなければなら
ず、このため量産性に劣るという問題があった。また、
修理、定期点検等の目的で一度分解した後、再度組立て
る場合、同様の調整を行う必要があると共に再現性に問
題があった。[Problems to be solved by the invention] However, the light emitting surface of the LED array chip 13 and the 5LA14
When adjusting the gap, it is necessary to monitor the beam size of the output light from the 5LA 14 and adjust the rotation angle of the eccentric screw 16 so that the beam size is minimized, which results in poor mass productivity. was there. Also,
When reassembling the device after it has been disassembled for the purpose of repair, periodic inspection, etc., it is necessary to make similar adjustments and there is a problem with reproducibility.
［発鳴の目的］
本発明の目的は、上記した従来技術の問題点を解消し、
全製品のＳＬＡとＬＥＤアレイチップの発光面との焦点
距離が最適且つ均一であり、生産性及び再組立て時の再
現性を大幅に向上させることができる光プリンタヘッド
を提供することにある。[Purpose of Sounding] The purpose of the present invention is to solve the problems of the prior art described above,
An object of the present invention is to provide an optical printer head in which the focal distance between the SLA of all products and the light emitting surface of an LED array chip is optimal and uniform, and productivity and reproducibility during reassembly can be greatly improved.
［問題点を解消するための手段］
本発明の要旨は、表面にＬＥＤアレイチップが搭載され
ているセラミック基板が固定板表面に設置され、上記Ｌ
ＥＤアレイチップの出力光を集光するためのＳＬＡが上
記ＬＥＤアレイチップの発光面上方に位置するよう設け
られている光プリンタヘッドにおいて、上記セラミック
基板と上記ＳＬＡの間に該ＳＬＡの焦点と上記ＬＥＤア
レイチップの発光面の位置が一致するよう予じめ高さを
設定したスペーサが介入されていることにあり、それに
よってＬＥＤアレイチップとＳＬＡの間隙調整が不要に
なり、光プリンタヘッドの組立性を大幅に向上させたも
のである。[Means for solving the problem] The gist of the present invention is that a ceramic substrate on which an LED array chip is mounted is installed on the surface of a fixed plate,
In an optical printer head in which an SLA for condensing output light of an ED array chip is provided above the light emitting surface of the LED array chip, the focal point of the SLA and the above are located between the ceramic substrate and the SLA. The reason is that a spacer whose height is set in advance is inserted so that the light emitting surface of the LED array chip matches the position of the light emitting surface, which eliminates the need to adjust the gap between the LED array chip and the SLA, making it easier to assemble the optical printer head. This greatly improves the performance.
［実施例］
以下、本発明の実施例を図示した図面に基づいて詳細に
説明する。[Example] Hereinafter, an example of the present invention will be described in detail based on the drawings.
第１図は本発明の光プリンタヘッドの一実施例を示す説
明図である。FIG. 1 is an explanatory diagram showing an embodiment of the optical printer head of the present invention.
ＬＥＤアレイチップ１３を搭載したセラミック基板１２
が固定板１１に設置され、セラミック基板１２の両端で
ＬＥＤアレイチップ１３の出力光の光路を妨げない位置
に、セラミック基板１２を貫通し固定板１１の内部にま
で達する通し孔２０が設けられている。Ceramic substrate 12 mounted with LED array chip 13
are installed on the fixing plate 11, and through-holes 20 are provided at both ends of the ceramic substrate 12 at positions that do not obstruct the optical path of the output light of the LED array chip 13, penetrating the ceramic substrate 12 and reaching inside the fixing plate 11. There is.
この通し孔２０にはセラミック製の位置決めピン２２が
挿入されており、抜けないように通し孔２０及び位置決
めピン２２の表面にネジが切られているか或いは樹脂等
で固定されている。A positioning pin 22 made of ceramic is inserted into the through hole 20, and the surfaces of the through hole 20 and the positioning pin 22 are threaded or fixed with resin or the like to prevent them from coming off.
この位置決めピン２２にはセラミック製のスペーサ２１
の中空部３１が挿入され、このスペーサ２１の上に５Ｌ
Ａ１４の高精度に加工した固定基準面２４を位置させて
固定している。A ceramic spacer 21 is attached to this positioning pin 22.
The hollow part 31 of 5L is inserted above this spacer 21.
A fixed reference surface 24 machined with high precision of A14 is positioned and fixed.
なおスペーサ２１の寸法（高さ）は５ＬＡ１４の焦点距
離とＬＥＤアレイチップ１３の高さくすなわちセラミッ
ク基板１２の表面からＬＥＤアレイチップ１３の発光面
までの距離）により一義的に決まる。Note that the dimensions (height) of the spacer 21 are uniquely determined by the focal length of the 5LA 14 and the height of the LED array chip 13 (ie, the distance from the surface of the ceramic substrate 12 to the light emitting surface of the LED array chip 13).
この方式における位置合せ誤差はスペーサ２１の寸法精
度及び５ＬＡ１４の固定基準面２４の加工精度等によっ
て決まるが、スペーサ２１については０．０１■ｓ、５
ＬＡ１４の固定基準面２４については０．０７−■の精
度が容易に得られ、ＬＥＤアレイチップ１３の発光面と
５ＬＡ１４との焦点距離の誤差を全体として０．０８＋
ｎ以内にすることができる。これは必要な精度±０、ｌ
ｓｓに対し十分な精度を有している。The alignment error in this method is determined by the dimensional accuracy of the spacer 21 and the processing accuracy of the fixed reference surface 24 of the 5LA14.
For the fixed reference plane 24 of the LA14, an accuracy of 0.07-■ can be easily obtained, and the error in focal length between the light emitting surface of the LED array chip 13 and the 5LA14 is 0.08+ as a whole.
It can be within n. This is the required accuracy ±0, l
It has sufficient accuracy for ss.
なお、５ＬＡ１４は、５ＬＡ１４の固定基準面２４にも
設けた通し孔に他の位置決めピンを挿入ることによりス
ペーサ２１に固定することができる。また、固定板１１
から５ＬＡ１４まで達する１本の位置決めピンを用いて
固定しても良い。この状態でも５ＬＡ１４は固定板１１
にしっかり固定されているが、５ＬＡ１４と固定板１１
を弾性体で挟みつけるようにしてもよい。Note that 5LA14 can be fixed to spacer 21 by inserting another positioning pin into a through hole also provided in fixed reference surface 24 of 5LA14. In addition, the fixed plate 11
It may be fixed using one positioning pin that reaches from 5LA14 to 5LA14. Even in this state, 5LA14 is fixed plate 11
Although it is firmly fixed to 5LA14 and fixing plate 11
may be sandwiched between elastic bodies.
このように、セラミック基板１２と５ＬＡ１４との間に
、５ＬＡ１４の焦点とＬＥＤアレイチップ１３の発光面
の位置とが一致するよう予じめ高さを設定したスペーサ
２１を介入したことにより、５ＬＡ１４とＬＥＤアレイ
チップ１３の発光面との焦点距離を無調整で最適且つ均
一にすることができ、従来のようにセラミック基板１２
と固定板１１とを固定する樹脂の厚さに影響されること
がない。In this way, by interposing the spacer 21 between the ceramic substrate 12 and the 5LA14, the height of which is set in advance so that the focal point of the 5LA14 matches the position of the light emitting surface of the LED array chip 13, the 5LA14 and the The focal length with the light emitting surface of the LED array chip 13 can be made optimal and uniform without adjustment, and the ceramic substrate 12 can be
It is not affected by the thickness of the resin that fixes the fixed plate 11 and the fixing plate 11.
すなわち、本発明では、セラミック基板１２と５ＬＡ１
４との間にスペーサ２１を介入したことに意味があるの
であって、固定板１１とＳＬＡ１４との間にスペーサ２
１を介入した場合は、上述のようにセラミック基板１２
と固定板１１とを固定する樹脂の厚さにより５ＬＡ１４
とＬＥＤアレイチップ１３との焦点距離を一定にするこ
とはできない。That is, in the present invention, the ceramic substrate 12 and 5LA1
There is a meaning in inserting the spacer 21 between the fixing plate 11 and the SLA 14.
1, the ceramic substrate 12 is inserted as described above.
5LA14 depending on the thickness of the resin that fixes the and fixing plate 11.
The focal distance between the LED array chip 13 and the LED array chip 13 cannot be made constant.
なお、本実施例ではスペーサ２１及び位置決めピン２２
としてセラミック製（例えばＡ Ｉ ２０ ａ等）のも
のを用いたが、これは熱的に安定（線膨張係数が小さい
）且つ高精度に加工できるものであればよく、石英ガラ
ス或いは石英フィラ入すのプラスチック等も用いること
ができる。Note that in this embodiment, the spacer 21 and the positioning pin 22
A ceramic material (for example, A I 20 a) was used as the material, but it may be any material as long as it is thermally stable (low coefficient of linear expansion) and can be processed with high precision. Plastics, etc. can also be used.
また、スペーサ２１の形状は必ずしも円筒体である必要
はなく、中空部３１を有していれば角柱或は他の形状で
あっても目的が達成される形状であれば良い。また、初
めからスペーサ２１と位置決めピン２２が一体となった
ものを使用しても良い。Further, the shape of the spacer 21 is not necessarily cylindrical, and may be a prismatic or other shape as long as it has a hollow portion 31 so that the purpose can be achieved. Alternatively, a spacer 21 and a positioning pin 22 which are integrated from the beginning may be used.
［発明の効果］
以上に説明したように、本発明によれば、表面にＬＥＤ
アレイチップが搭載されているセラミック基板が固定板
表面に設置され、ＬＥＤアレイチップの出力光を集光す
るためのＳＬＡがＬＥＤアレイチップの発光面上方に位
置するよう設けられた光プリンタヘッドにおいて、セラ
ミック基板とＳＬＡの間にＳＬＡの焦点とＬＥＤアレイ
チップの発光面の位置が一致するよう予じめ高さを設定
したスペーサが介入されていることにより、次のような
顕著な効果を奏する。[Effects of the Invention] As explained above, according to the present invention, LEDs are provided on the surface.
In an optical printer head, a ceramic substrate on which an array chip is mounted is installed on the surface of a fixed plate, and an SLA for condensing output light of the LED array chip is located above the light emitting surface of the LED array chip. By interposing a spacer with a height set in advance so that the focal point of the SLA and the light emitting surface of the LED array chip are aligned between the ceramic substrate and the SLA, the following remarkable effects are achieved.
（１） スペーサの高さが予じめＬＥＤアレイチップ
の発光面の位置とＳＬＡの焦点距離とが一致するように
設定されているため、全製品のＳＬＡとＬＥＤアレイチ
ップの発光面との焦点距離を無調整で最適且つ均一にす
ることができる。(1) Since the height of the spacer is set in advance so that the position of the light emitting surface of the LED array chip and the focal length of the SLA match, the focal length of the SLA of all products and the light emitting surface of the LED array chip is The distance can be made optimal and uniform without any adjustment.
（２） ＬＥＤアレイチップの発光面とＳＬＡの距離
を調整する必要がないため、生産性及び分解後の再組立
時再現性を大幅に向上することができる。従って、定期
点検等の保守を容易にすることができる。(2) Since there is no need to adjust the distance between the light emitting surface of the LED array chip and the SLA, productivity and reproducibility during reassembly after disassembly can be greatly improved. Therefore, maintenance such as periodic inspection can be facilitated.
第１図は本発明の一実施例を示す説明図、第２図は従来
例を示す説明図である。
１１：固定板、
１２：セラミック基板、
１３ ： ＬＥＤアレイチップ、
１４：セルフォックレンズアレイ（ＳＬＡ）、１５ ：
ＳＬＡ固定治具、
１６：偏心ネジ、
２０：通し孔
２１ニスペーサ、
２２：位置決めピン、
２４：ＳＬＡの固定基準面、
３１ニスペーサの中空部。
第１図
第２図FIG. 1 is an explanatory diagram showing one embodiment of the present invention, and FIG. 2 is an explanatory diagram showing a conventional example. 11: Fixed plate, 12: Ceramic substrate, 13: LED array chip, 14: Selfoc lens array (SLA), 15:
SLA fixing jig, 16: eccentric screw, 20: through hole 21 varnish spacer, 22: positioning pin, 24: SLA fixing reference surface, 31 hollow part of varnish spacer. Figure 1 Figure 2
Claims (1)
ミック基板が固定板表面に設置され、前記ＬＥＤアレイ
チップの出力光を集光するためのセルフォックレンズア
レイが前記ＬＥＤアレイチップの発光面上方に位置する
よう設けられている光プリンタヘッドにおいて、前記セ
ラミック基板と前記セルフォックレンズアレイの間に該
セルフォックレンズアレイの焦点と前記ＬＥＤアレイチ
ップの発光面の位置が一致するよう予じめ高さを設定し
たスペーサが介入されていることを特徴とする光プリン
タヘッド。(1) A ceramic substrate on which an LED array chip is mounted is installed on the surface of the fixed plate, and a SELFOC lens array for condensing the output light of the LED array chip is placed above the light emitting surface of the LED array chip. In the optical printer head, the height is set in advance between the ceramic substrate and the SELFOC lens array so that the focal point of the SELFOC lens array and the light emitting surface of the LED array chip coincide with each other. An optical printer head characterized in that a spacer is inserted.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62101089A JPS63265664A (en) | 1987-04-23 | 1987-04-23 | Optical printer head |
| US07/184,074 US4829321A (en) | 1987-04-23 | 1988-04-20 | Optical printer head with a light emitting diode array |
| US07/315,055 US4905021A (en) | 1987-04-23 | 1989-02-24 | Optical printer head with a light emitting diode array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62101089A JPS63265664A (en) | 1987-04-23 | 1987-04-23 | Optical printer head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63265664A true JPS63265664A (en) | 1988-11-02 |
Family
ID=14291372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62101089A Pending JPS63265664A (en) | 1987-04-23 | 1987-04-23 | Optical printer head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63265664A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02106362A (en) * | 1988-10-14 | 1990-04-18 | Sanyo Electric Co Ltd | Optical printing head and manufacture thereof |
| JPH02136254A (en) * | 1988-11-16 | 1990-05-24 | Sanyo Electric Co Ltd | Optical printing head |
| JPH0494650U (en) * | 1990-12-29 | 1992-08-17 | ||
| US8475003B2 (en) | 2008-04-25 | 2013-07-02 | Sharp Kabushiki Kaisha | Lens body, light source unit and lighting system |
-
1987
- 1987-04-23 JP JP62101089A patent/JPS63265664A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02106362A (en) * | 1988-10-14 | 1990-04-18 | Sanyo Electric Co Ltd | Optical printing head and manufacture thereof |
| JPH02136254A (en) * | 1988-11-16 | 1990-05-24 | Sanyo Electric Co Ltd | Optical printing head |
| JPH0494650U (en) * | 1990-12-29 | 1992-08-17 | ||
| US8475003B2 (en) | 2008-04-25 | 2013-07-02 | Sharp Kabushiki Kaisha | Lens body, light source unit and lighting system |
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