JP6762314B2 - 光照射装置および光照射システム - Google Patents
光照射装置および光照射システム Download PDFInfo
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Description
また本発明の実施形態に係る光照射装置は、上面に第1凹部および第2凹部を有する基体と、前記第1凹部に位置しており、紫外線を照射する、発光素子と、前記第2凹部に位置しており、紫外線を検出可能な、検出素子と、前記第2凹部に位置しており、赤外線を検出可能である、第2検出素子と、前記検出素子および前記第2検出素子を離隔した状態で覆っている、紫外線遮蔽部材と、前記基体から距離を隔てて位置する、前記発光素子からの光を外部に出射可能な透光性部材と、を備え、前記検出素子は、前記発光素子から照射され前記基体を透過した紫外線を検出可能であり、前記紫外線遮蔽部材は、前記第2凹部の開口部を塞いでおり、赤外線を透過可能であり、前記第2検出素子は、少なくとも前記透光性部材の表面または外部から入射した赤外線を検出可能である。
前記光照射装置を駆動するための定電流を生成する定電流制御部と、
前記検出素子による紫外線の検出結果に基づき、前記定電流の電流値を演算して前記定電流制御部に出力する駆動電流演算部と、を備える。
前記光照射装置を駆動するための定電流を生成する定電流制御部と、
前記検出素子による赤外線の検出結果が、予め定める範囲から外れている場合に前記光照射装置が異常であると判定する異常判定部と、を備える。
図1および図2に示す本発明の実施形態に係る光照射装置100は、例えば、紫外線硬化型インクを使用するオフセット印刷装置やインクジェット印刷装置などの印刷装置に組み込まれて、対象物(記録媒体)に紫外線硬化型インクを被着した後に紫外線を照射することで、紫外線硬化型インクを硬化させる紫外線発生光源として機能する。
上述した本発明の実施形態に係る光照射装置100を含む光照射システムについて、図3を参照しつつ説明する。
光照射装置100の内容は、上述の通りである。
電源部110は、例えば、交流(AC)電圧から直流(DC)電圧を生成し、定電流制御部130にDC電圧を入力する。また、電源部110のDC電圧の大きさは、光照射部の順方向電圧(Vf)に定電流制御部130の負荷電圧を加えた値よりも、大きな電圧に設定される。
定電流制御部130は、光照射装置100を駆動するための定電流を生成する。例えば、本実施形態において、定電流制御部130は、電源部110と光照射装置100とに接続されており、電源部110から所定の電圧を受けて、所定の電流を生成して光照射装置100に流すことにより、発光素子20を発光させるものである。
駆動電流演算部140は、検出素子18aと定電流制御部130とに接続されており、検出素子18aの出力信号を受け、光出力データに変換する。光出力データとメモリに記憶されている目標光出力との差分から、定電流制御部130から光照射装置100へ流す駆動電流値を演算し、定電流制御部130に出力する。
光照射装置100に接続される外部システムとして、プリンタ等が挙げられる。図3では、外部システムは、定電流制御部130を介して光照射装置100に接続されている。外部システムは、光照射装置100のON/OFF信号を定電流制御部130に出力したり、定電流制御部130からの動作信号や異常信号を受けて、その駆動内容に反映させる。
上述のような光照射装置100を含む光照射システムの駆動フローについて、図3(b)を参照しつつ説明する。
次に、光照射システムおよび光照射システムの駆動フローについての変形例を、図4を用いて説明する。
上述の変形例のような光照射装置100を含む光照射システムの駆動フローについて、図4(b)を参照しつつ説明する。
本発明の印刷装置の実施形態の一例として、図5に示した印刷装置200を例に挙げて説明する。
11a 一方主面
12 凹部
12a 第1凹部
12b 第2凹部
12c 第3凹部
13 接続パッド
14 内周面
15 接合材
16 レンズ
17 レンズ接着剤
18,18a,18b 検出素子
19 紫外線遮蔽部材
20 発光素子
21 素子基板
22 半導体層
23,24 素子電極
30 封止材
40 積層体
41 第1の絶縁層
42 第2の絶縁層
50 電気配線
60 透光性部材
70 第2検出素子
80 第3検出素子
100,100A,100B 光照射装置
101 放熱用部材
102 接着材
110 電源部
120 駆動制御部
130 定電流制御部
140 駆動電流演算部
150 異常判定部
200 印刷装置
210 搬送手段
211 載置台
212 搬送ローラ
220 印刷手段
220a 吐出孔
250 記録媒体
Claims (9)
- 上面に第1凹部および第2凹部を有する基体と、
前記第1凹部に位置しており、紫外線を照射する、発光素子と、
前記第2凹部に位置しており、紫外線を検出可能な、検出素子と、
前記検出素子を離隔した状態で覆っている、紫外線遮蔽部材と、
前記基体から距離を隔てて位置する、前記発光素子からの光を外部に出射可能な透光性部材と、を備え、
前記検出素子は、前記発光素子から照射され前記基体を透過した紫外線を検出可能であり、
前記紫外線遮蔽部材は、前記第2凹部の開口部を塞いでおり、赤外線を透過可能であり、
前記検出素子は、少なくとも前記透光性部材の表面または外部から入射した赤外線を検出可能である、光照射装置。 - 上面に第1凹部および第2凹部を有する基体と、
前記第1凹部に位置しており、紫外線を照射する、発光素子と、
前記第2凹部に位置しており、紫外線を検出可能な、検出素子と、
前記第2凹部に位置しており、赤外線を検出可能な、第2検出素子と、
前記検出素子および前記第2検出素子を離隔した状態で覆っている、紫外線遮蔽部材と、
前記基体から距離を隔てて位置する、前記発光素子からの光を外部に出射可能な透光性部材と、を備え、
前記検出素子は、前記発光素子から照射され前記基体を透過した紫外線を検出可能であり、
前記紫外線遮蔽部材は、前記第2凹部の開口部を塞いでおり、赤外線を透過可能であり、
前記第2検出素子は、少なくとも前記透光性部材の表面または外部から入射した赤外線を検出可能である、光照射装置。 - 前記基体は、前記第1凹部と前記第2凹部との間の部位であって、
前記発光素子から照射された紫外線が透過可能な部位を有している、請求項1または2記載の光照射装置。 - 前記基体は、前記第1凹部を複数有し、
隣接する前記第1凹部間の部位よりも前記第1凹部と前記第2凹部との間の部位のほうが薄い、請求項3記載の光照射装置。 - 前記発光素子を離隔した状態で覆っている、レンズをさらに備える請求項1〜4のいずれかに記載の光照射装置。
- 前記レンズは、前記第1凹部の開口部を塞いでいる、請求項5に記載の光照射装置。
- 前記基体の下面側に接合された放熱用部材をさらに備える、請求項1〜6のいずれかに記載の光照射装置。
- 請求項1〜7のいずれかに記載の光照射装置と、
前記光照射装置を駆動するための定電流を生成する定電流制御部と、
前記検出素子による紫外線の検出結果に基づき、前記定電流の電流値を演算して前記定電流制御部に出力する駆動電流演算部と、を備える光照射システム。 - 請求項1〜7のいずれかに記載の光照射装置と、
前記光照射装置を駆動するための定電流を生成する定電流制御部と、
前記検出素子による赤外線の検出結果が、予め定める範囲から外れている場合に前記光照射装置が異常であると判定する異常判定部と、を備える光照射システム。
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