JP4253959B2 - Media handling device - Google Patents

Media handling device Download PDF

Info

Publication number
JP4253959B2
JP4253959B2 JP32770899A JP32770899A JP4253959B2 JP 4253959 B2 JP4253959 B2 JP 4253959B2 JP 32770899 A JP32770899 A JP 32770899A JP 32770899 A JP32770899 A JP 32770899A JP 4253959 B2 JP4253959 B2 JP 4253959B2
Authority
JP
Japan
Prior art keywords
medium
image
media
heavy
thickness
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.)
Expired - Fee Related
Application number
JP32770899A
Other languages
Japanese (ja)
Other versions
JP2001139188A (en
Inventor
利幸 小野
美和 小林
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co Ltd
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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP32770899A priority Critical patent/JP4253959B2/en
Publication of JP2001139188A publication Critical patent/JP2001139188A/en
Application granted granted Critical
Publication of JP4253959B2 publication Critical patent/JP4253959B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Handling Of Cut Paper (AREA)
  • Controlling Sheets Or Webs (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、イメージスキャナ、光学式文字読取装置、ファクシミリ、複写機等の媒体を搬送する機構を有する媒体取扱装置に関し、特に、挿入部にセットされた帳票を搬送させイメージの読み取りを行い、排出部に当該帳票を排出したり、または、ホッパに積載した帳票を連続して搬送する際に、帳票等の媒体が複数枚重なって走行する重走を検知するのに有用である。
【0002】
【従来の技術】
以下、媒体取扱装置としてイメージスキャナを例に説明する。
一般に、イメージスキャナでは、挿入部にセットされた帳票を搬送させイメージの読み取りを行い、排出部に当該帳票を排出したり、または、ホッパに積載した帳票を連続して搬送する際に、帳票が複数枚重なって走行する重走が発生することがある。このようなとき、オペレータは、重走の有無を認識して該当帳票を選別し、該当帳票のイメージの読取処理を再度行わせなければならない。このため、オペレータは、イメージスキャナで取得したイメージをパソコン等の外部装置に転送させてCRT等の表示装置に表示させ、読み込まれた帳票と突合チェックを行うことによって、重走の有無の判断を行って、該当帳票を選別していた。しかし、これでは、重走有無の判断や該当帳票の選別のために膨大な時間がかかってしまうため、イメージスキャナに重走の検知を判断する機能を持たせたものが種々知られている。
【0003】
従来のイメージスキャナは、長さや厚さや光の透過量等が一定の帳票のみを扱うものとし、重走の検知には、予め扱う帳票の1枚の長さや厚さや光の透過量を記憶しておき、搬送の際に、長さ検知や厚さ検知や透過検知等を行って、検知した量と記憶してある量とを比較することで、重走を検知するものが知られている。
【0004】
例えば、▲1▼搬送した帳票の枚数を計数して表示し、排出時にオペレータに計数させて、各計数結果を比較させて、両枚数が相違すれば重走が発生していると、オペレータに判断させる場合、▲2▼帳票の厚さを検知する手段を有し、あらかじめ登録された一種類の帳票の厚さと比較して重走を検知する場合、▲3▼帳票の厚さを検知する手段を有し、ホッパに積載された帳票から搬送される最初の帳票の厚さを検出し、以後搬送される帳票は、最初に搬送された帳票の厚さと比較して重走を検知する場合が知られている。
【0005】
また、特に、サイズや厚さの異なる帳票を扱う場合には、帳票のイメージを取得し、そのイメージを処理する際に、イメージデータを見て重走の判断をオペレータにさせたり、帳票枚数とイメージの処理枚数のデータ差分により判断する必要があった。
【0006】
【発明が解決しようとする課題】
上記従来の媒体取扱装置、例えば、ホッパに積載した帳票を連続して搬送する機構を有するイメージスキャナでは、帳票の重走検知・該当帳票を検索するために以下の問題がある。
▲1▼搬送した帳票の枚数を検出して表示する場合には、オペレータがホッパに積載した帳票の枚数を数え、検出された帳票の枚数と比較し、重走有無を確認しなければならず、特に、重走有りのときは、取得されたイメージをCRT等に表示し、オペレータが読み込まれた帳票と突合チェックを行い、該当帳票を選別しなければならないため、重走の検知や重走該当帳票の検索に膨大な時間がかかる問題がある。
【0007】
▲2▼帳票の厚さを検知する手段を有し、あらかじめ登録された帳票の厚さと比較して重走を検知する場合には、専用機器でホッパに積載する帳票の厚さを測定するとともに装置に厚さの情報を入力する煩雑な手順と、ホッパに積載する帳票は全て同じ厚さである必要があるため、同じ厚さの帳票を用意する煩雑な作業とが必要であり、また、異なる厚さの帳票は同時に搬送できない問題がある。
【0008】
▲3▼帳票の厚さを検知する手段を有し、ホッパに積載された帳票から搬送される最初の帳票の厚さを検出し、以後搬送される帳票は、最初に搬送された帳票の厚さと比較して重走を検知する場合には、ホッパに積載する帳票は全て同じ厚さである必要があり、同じ厚さの帳票を用意するという煩雑な作業等が必要となり、また、異なる厚さの帳票は同時には搬送できない問題がある。
【0009】
さらに、従来の媒体取扱装置では、定型の帳票を使用しなければならないため、サイズや厚さを分類して処理する必要があり、帳票に対する汎用性が少ない。また、重走を検知するための機構を取り付けなければならないため、装置が複雑で高価なものになってしまう問題がある。また、特に、サイズや厚さの異なる帳票を扱う場合には、イメージを確認するまで重走の確認ができないため、例えば、イメージの取り込み先とイメージの処理先が異なるときは、重走の確認に時間を費やさなければならない問題がある。
【0010】
そこで、本発明は、上記課題を解決するとともに、特に、サイズや厚さの異なる帳票をセットして処理した場合でも、オペレータがイメージ動作を完了した時点で帳票を確認できるようにして重走発生の有無を判断できる媒体取扱装置を安価に提供することを目的とする。
【0011】
【課題を解決するための手段】
本発明は、外形の異なる少なくとも2種類の媒体を順に搬送し、各媒体のイメージを取得して記憶する媒体取扱装置において、外形の異なる少なくとも2種類の媒体同士が、複数枚重なって走行する重走の場合と1枚毎の走行の場合とを区別する基準として、取り扱う媒体の中で最も長い媒体の長さを記憶しておき、搬送の際に媒体の長さを検出し、その長さの結果を予め記憶してある基準の長さと比較し、その基準の長さ以上の場合に、重走と判断することを特徴とする。
【0012】
また、本発明は、外形の異なる少なくとも2種類の矩形状の媒体を順に搬送し、各媒体のイメージを取得して記憶する媒体取扱装置において、外形の異なる少なくとも2種類の媒体同士が、複数枚重なって走行する重走する場合と、1枚毎の走行の場合とを区別する基準を媒体外形の各辺の直線性とし、取得したイメージから外形を検出し、その外形の各辺を認識して、各辺の直線性を判断し、直線性がない場合に、重走と判断することを特徴とする
【0013】
さらに、本発明は、外形の異なる少なくとも2種類の媒体を順に搬送し、各媒体のイメージを取得して記憶する媒体取扱装置において、外形の異なる少なくとも2種類の媒体同士が、複数枚重なって走行する重走する場合と、1枚毎の走行の場合とを区別する基準を媒体外形の相対向する辺同士の平行性とし、取得したイメージから外形を検出し、その外形の各辺を認識して、対向する辺同士の平行性を判断し、平行性がない場合に、重走と判断することを特徴とする
【0014】
らにまた、本発明は、外形の異なる少なくとも2種類の媒体を順に搬送し、各媒体のイメージを取得して記憶する媒体取扱装置において、搬送の際に、媒体の上辺部及び下辺部に所定のキャラクタを印字して媒体を排出し、排出された媒体の前記上辺部及び下辺部への所定のキャラクタの印字状態により、媒体が複数枚重なって走行する重走の発生の有無をオペレータに判断させるようにしたことを特徴とする。
【0015】
なお、以下の実施の形態では、上述した長さによる重走検知、直線性、平行性や直角性(矩形性)に基づく外形検査による重走検知、厚さによる重走検知及び印字による重走検知の全てを行う場合を説明するが、それぞれを独立して用いたり、適宜組み合わせを替えて実施するようにしてもよい。
【0016】
【発明の実施の形態】
以下、図面を参照して、本発明の実施の形態を説明する。なお、これによりこの発明が限定されるものではない。
図1は、実施の形態のイメージスキャナの構成を示す概略図である。このイメージスキャナは、帳票2を複数枚積載するホッパ1、このホッパ1に積載された帳票2を1枚づつ分離する分離機構3、この分離機構3により分離された帳票2を矢印方向(図中方向)へ所定速度で搬送する搬送部4、この搬送部4とともに機能して帳票2を搬送するために適宜配置した搬送ローラ4a、搬送される帳票2を検出する媒体検出部5、この媒体検出部5から所定の位置に配置されてCCD等よりなるイメージ取得部6、前記媒体検出部5から所定の位置に配置されている帳票2の厚さを検知する媒体厚さ検出部7、前記媒体検出部5から所定の位置に配置されている印字部8、前記搬送部4により搬送された帳票2を積載するスタッカ部9を有している。なお、前記印字部8は、搬送部4の右側から一定の位置に固定されており、帳票2が下を通過する際に、図示しない印字ピンに作動して帳票2に印字を行う。
【0017】
図2は、実施の形態のイメージスキャナの概略を示すブロック図である。なお、図1を適宜参照して説明する。このイメージスキャナは、カウンタ10aやメモリ10b等を有し、全体を制御する制御部10、分離機構3や搬送部4や搬送ローラ4aを制御して帳票2を搬送させる媒体搬送部15、帳票2を検出する媒体検出部5、帳票2のイメージを取得するイメージ取得部6、前記イメージ取得部6で取得したイメージを記憶するイメージメモリ部11、外部装置としてのパソコン13にイメージを転送するインタフェース部12、搬送された帳票2の厚さを検出する媒体厚さ検出部7、帳票2に印字を行う印字部8を有し、前記各部を内部バス14によって接続してある。なお、前記パソコン13には、オペレータが操作するキーボード13aが接続してある。
【0018】
以下、図3に実施の形態の重走検知処理のフローチャートを示し、上記図1及び図2を適宜参照して説明する。なお、上述した構成のイメージスキャナは、外寸法や厚さが相違する様々な種類の帳票2を扱うものとし、ホッパ1には数種類の帳票2を積載する場合を想定する。また、帳票2は、各種類毎に、所定の範囲の外形寸法及び所定の範囲の紙厚さの矩形の用紙である。
【0019】
まず、オペレータがパソコン13のキーボード13aを操作して、印字の有無の指示、印字文字、後述の上辺印字エリアや下辺印字エリア等の各種データを入力する(S1)。次に、オペレータが該当する帳票をホッパ1にセットし、キーボード13aの図示しない実行キーを押下すると(S2)、制御部10は処理をS3に移す。制御部10は、実行キーの押下後一定時間経過までに媒体検出部5が帳票2を検出するか否かによって、ホッパ1に帳票2がセットされているか否かを判断し、検出されて帳票2があると判断した場合には処理をSに移し、検出されずに帳票2がないと判断した場合には処理を終了する(S3)。次に、制御部10は、媒体搬送部15に指令を出し、分離機構3によってホッパ1に積載された帳票2を分離させ、搬送部4や搬送ローラ4aによって帳票2を搬送方向(図1中右方向)に搬送させる(S4)。この搬送中の帳票2は、媒体検出部5の下方を通過し、その際、媒体検出部5によって先端及び後端を検出される。媒体検出部5は、検出した先端及び後端の情報を制御部10に送る。そして、制御部10では、搬送される帳票2の速度と検出された先端及び後端との関係から帳票2の長さを算出する(S5)。この長さを算出した際、制御部10では、帳票2の長さによって重走を検知する重走検知処理を行う。この重走検知処理は、後述するように、取り扱う帳票2の中で最も長い帳票2の長さを基準として記憶しておき、検出した長さの結果を予め記憶してある基準の長さと比較し、その基準の長さ以上の場合に、重走と判断するように処理する(S6)。重走と判断した場合には該当の帳票2をスタッカ部9に排出し、パソコン13の表示画面にエラー表示等して報知して処理を終了し、重走でなく正常に1枚で搬送されていると判断した場合にはS8に処理を移す(S7)。
【0020】
次に、帳票2は、イメージ取得部6の下方を通過する際に、そのイメージ取得部6によって表面のイメージが取得される(S8)。イメージ取得部6は取得したイメージをイメージメモリ部11に記憶し、制御部10は、イメージメモリ部11からイメージを呼び出して後述する外形検査による重走検知処理を行う(S9)。ここでの重走検知処理では、取り扱う媒体は全て矩形状である必要があり、その旨をメモリ10bに帳票2の搬送前に設定しておくものとする。なお、重走の場合と1枚毎の走行の場合とを区別する基準は、外形の各辺の直線性、外形の相対向する辺同士の平行性又は外形の隣り合う辺同士の直角性とし、直線性の場合には、取得したイメージから外形を検出し、その外形の各辺を認識して、各辺の直線性を判断し、直線性がない場合に、重走と判断する。平行性の場合には、取得したイメージから外形を検出し、その外形の各辺を認識して、対向する辺同士の平行性を判断し、平行性がない場合に、重走と判断する。また、直角性の場合には、取得したイメージから外形を検出し、その外形の各辺を認識して、隣り合う辺同士の内角を認識してその直角性を判断し、直角性がない場合に重走と判断する。そして、制御部10は、外形検査処理の実行後、重走と判断した場合には該当の帳票2をスタッカ部9に排出し、パソコン13の表示画面にエラー表示等して報知して処理を終了し、重走でなく正常に1枚で搬送されていると判断した場合には、インタフェース部12を経由してパソコン13にイメージを転送し、処理をS11に処理を移す(S10)。
【0021】
その後、帳票2は、媒体厚さ検出部7の下方を通過し、その際、媒体厚さ検出部7によって厚さが検出される。媒体厚さ検出部7は、検出した厚さを制御部10に送る。制御部10では、検出された帳票2の厚さの値により重走検知処理を実行する(S11)。この重走検知処理では、後述するように、検出した厚さに変化点が存在する場合に、重走と判断し、また、取り扱う帳票2の内で最も厚い媒体の厚さをあらかじめ記憶しておき、厚さの変化が無い場合であって、基準の厚さ以上のときに、重走と判断する。そして、制御部10は、重走と判断した場合には該当の帳票2をスタッカ部9に排出し、パソコン13の表示画面にエラー表示等して報知して処理を終了し、重走でなく正常に1枚で搬送されていると判断した場合には、処理をS13に処理を移す(S12)。
【0022】
その後、帳票2は、印字部8の下方を通過し、その際、印字部8によって各種データを印字するとともに所定の位置に所定の印字が行われる(S13)。このように、帳票2の所定位置に所定のキャラクタを印字しておくと、排出された帳票2の所定位置への所定のキャラクタの印字状態により、重走の発生の有無をオペレータに判断させることができる。なお、その所定のキャラクタを印字する所定位置は、帳票2の上辺印字エリア及び下辺印字エリアとするのが好ましく、ここでもこの場合を想定する。また、帳票2に印字するか否か、印字する文字及び上辺印字エリアや下辺印字エリアの位置等の各種データは、予めオペレータがパソコン13のキーボード13aを操作して入力し、制御部10のメモリ10bに格納しておく。上辺印字エリアや下辺印字エリアの位置は、帳票2の上辺から上辺印字エリアの上端までの距離や帳票2の下辺から下辺印字エリアの下端までの距離で定義し、その値も予めオペレータがパソコン13のキーボード13aを操作して入力し、制御部10のメモリ10bに格納しておく。さらに、所定のキャラクタは、あらゆる種類のものでよい。また、帳票2に印字する所定のキャラクタの大きさは、印字部8の幅内のものであればよい。文字の数は、例えば、上辺印字エリアに1〜4文字、下辺印字エリアに1〜16文字まで印字する。但し、文字数は単なる例示に過ぎず、これに限らない。
【0023】
このため、取り扱っている帳票2に印字の指定がある場合には、オペレータがパソコン13のキーボード13aを操作して、帳票2のイメージ読み取りを実行するコマンドを入力すると、イメージスキャナの制御部10ではメモリ10bから所定のキャラクタ等のデータを取り出し、後述するように印字位置を算出し、帳票2のイメージの読み取りの際に、所定の位置に所定のキャラクタを印字する。
【0024】
印字位置の算出は、制御部10が、帳票2の上辺から上辺印字エリアの上端までの距離や帳票2の下辺から下辺印字エリアの下端までの距離をメモリ10bから読み出し、媒体検出部5が帳票2の上辺を検出してから所定時間、例えば、媒体検出部5から印字部8までの距離と帳票2の上辺から上辺印字エリアの上端までの距離の和を帳票2の搬送速度で割った値、具体的には何ミリ秒後に、印字部8が上辺印字エリアの上端に達するのか、または、媒体検出部5が帳票2の下辺を検出してから所定時間、例えば、媒体検出部5から印字部8までの距離と帳票2の下辺から下辺印字エリアの上端までの距離と下辺印字エリアに印字する文字数分の距離の和を帳票2の搬送速度で割った値、具体的には何ミリ秒後に、印字部8が上辺印字エリアの上端に達するのかで行う。
【0025】
最後に、印字が終了した帳票2は、スタッカ部9に排出される(S14)。以後同様な処理をホッパ1上の帳票2が無くなるまで繰り返す。
図4に、長さによる重走検知の説明図を示す。図において、上段には帳票の状態、下段に示すグラフは横軸には長さ、縦軸には媒体検出部5の出力値をとり、帳票有無判定スライスの出力値のところは横軸に平行な破線で示してある。その出力値は、搬送可能な最も短い帳票2aの長さの媒体検出部5の出力値よりも小さい値に設定すればよい。また、▲1▼には短い帳票2aが1枚の場合、▲2▼には最長の帳票2bが1枚の場合、▲3▼には帳票2cと帳票2dとが重なって重走となっている場合を示し、制御部10が▲1▼の場合に算出した帳票2aの長さをH1、同様に▲2▼の場合に算出した帳票2bの長さをH2、同様に▲3▼の場合の算出した帳票2cと帳票2dが重なっているときの長さをH3とし、本実施の形態のイメージスキャナが取り扱う最長の帳票2bの長さH2をHmax とする。
【0026】
長さによる重走検知の場合では、制御部10は、算出した長さとHmax とを比較し、算出した長さがHmax よりも長い場合に重走と判定する。つまり、▲1▼の場合にはH1はHmax 以下であり、▲2▼の場合にはH2はHmax と等しいため、▲1▼と▲2▼の場合には正常な一枚の搬送と判定し、▲3▼の場合にはH3はHmax よりも長いため、重走と判定する。
【0027】
図5に、外形検査による重走検知の説明図を示す。図において、(1)には重走パターン例、(2)にはイメージメモリ部11上での取得したイメージの外形検査例を示す。なお、この重走検知の場合には、イメージ取得部6の部分の搬送部4は黒色とし、例えば白色の帳票2の外形が鮮明に認識できるようにするのが好ましく、ここでもこの場合を想定する。また、帳票2は、上述したように、外形寸法の異なる複数の矩形状のものを対象とする。
【0028】
(1)に示すように、外形検査によって検知できる重走パターンには、▲1▼及び▲2▼帳票2の辺が直線でない場合、▲3▼帳票2の対向する辺が平行でない場合、▲4▼帳票2の外形が矩形でない場合の4つがある。▲1▼は帳票2eの上に帳票2fが重なり、外形としての一辺の部分が帳票2fの部分によって出っ張った状態であり、その部分が直線になっていない。▲2▼は帳票2gの上に帳票2hが重なり、外形としての一辺の部分が帳票2hの部分によって出っ張った状態であり、その部分が直線になっていない。▲3▼は帳票2iの上に帳票2jが重なり、外形としての対向する辺同士が平行となっていない状態である。▲4▼は帳票2kの上に帳票2lが重なり、帳票2lの上に帳票2mが3重に重なった場合であり、外形として直線性及び対向する辺同士の平行性がなく矩形性自体がない状態である。なお、図中、走行方向は上方としてある。
【0029】
(2)に示すように、イメージメモリ部11上では、取得したイメージの黒色部分が搬送部4の画像、白色部分が帳票2の画像として表してある。ここで、白色部分の帳票2の画像では、文字等は省略してある。なお、イメージメモリ部11上のアドレス空間は、図中左上を原点(0,0)として横軸にX、縦軸にYをとり、図中右方向を+X、下方向を+Yとした座標(X,Y)により表すものとする。また、矩形状の帳票2の左側縁を辺L、右側縁を辺R、上側縁を辺T、下側縁を辺Bとおき、▲1▼辺Lの直線性検査例、▲2▼対向する辺(辺Lと辺R)の平行性の検査例、▲3▼辺Lと辺Tとで検査する矩形性の検査例を順に説明する。
【0030】
▲1▼辺Lの直線性検査例では、Y軸上の所定のアドレス(0,Y(1) ),(0,Y(2) ),(0,Y(3) ),(0,Y(4) )からX軸に平行なアドレス上で黒から白の変化点を抽出し、帳票2の左辺Lの変化点座標(X(1) ,Y(1) ),(X(2) ,Y(2) ),(X(3) ,Y(3) ),(X(4) ,Y(4) )を求める。次に、この変化点座標(X(1) ,Y(1) ),(X(2) ,Y(2) ),(X(3) ,Y(3) ),(X(4) ,Y(4) )より所定の算出式により左辺Lの所定間隔での傾きLT を求め、各所定間隔間での傾きにより左辺Lの直線性を判断している。例えば、左辺Lの変化点座標(X(1) ,Y(1) ),(X(4) ,Y(4) )から左辺Lの傾きLT を求めると、傾きLT =(X(4) −X(1) )/(Y(4) −Y(1) )である。そして、各変化点座標間の左辺Lの傾きLT(i)を次式によりそれぞれ求める。
LT(i)=(X(1+i)−X(i) )/(Y(1+i)+Y(i) ) ( i= 1〜3 )
を求め、そして、
|(LT −LT(i))/LT |≦0.05 ( i= 1〜3 )
により左辺Lの直線性を判断する。なお、各辺T,R,Bについても同様な処理を行って傾きTT ,RT ,BT を求め、それぞれの直線性を判断する。
【0031】
▲2▼対向する辺(辺Lと辺R)の平行性の検査例では、上述した直線性を求める処理で得られた各辺の傾きより、対向する各辺の傾き(LT とRT 又はTT とBT )を比較することにより、対向する辺同士の平行性を判断する。つまり、辺Lの傾きLT と辺Rの傾きRT の次に示す関係式、
|(LT −RT )/RT |≦0.05
により対向する辺Lと辺Rの平行性を判断する。なお、辺Tと辺Bについても同様な処理を行って辺Tと辺Bの平行性を判断する。
【0032】
▲3▼辺Lと辺Tとで検査する矩形性の検査例では、上述した直線性を求める処理で得られた各辺の傾きより、近接する辺Lと辺T、辺Tと辺R、辺Rと辺B、辺Bと辺Lの角度を検出することにより矩形性を判断する。つまり、辺Tの傾きTT と辺Lの傾きLT の次に示す関係式、
0.95≦|LT ・TT |≦1.05
により辺Lと辺Tの直角性を判断する。なお、辺Tと辺R、辺Rと辺B、辺Bと辺Lについても同様な処理を行って各辺同士の直角性を判断し、矩形性を判断する。
【0033】
したがって、制御部10は、帳票2のイメージデータをイメージメモリ部11から読み出して、外形の縁外から縁内方向に向けて所定の間隔でイメージデータの変化する変化点、ここでは、黒色から白色へ変化する変化点を検出して傾きを算出し、この傾きを使用して各辺の直線性、対向する辺の平行性及び外形の矩形性を判断し、重走を検知する。
【0034】
なお、本実施の形態では、変化点の検出には、(2)に示したように、あらかじめ直交する2つの座標軸を決めておき、その座標軸に沿う方向から変化点を検出するのが好ましく、ここではこの場合を想定したが、変化点を検出し、各辺の直線性、対向する辺の平行性及び外形の矩形性を判断することができるのであればこれに限らない。
【0035】
図6に、厚さによる重走検知の説明図を示す。図において、上段に帳票状態、中断に示すグラフは横軸には長さ、縦軸には媒体厚さ検出部7の出力値をとり、帳票有無判定スライスの出力値のところは横軸に平行な破線で示してある。その出力値は、搬送可能な最も薄い帳票2nの厚さの媒体厚さ検出部7の出力値よりも小さい値に設定すればよい。下段に示すグラフは横軸に長さ、縦軸に媒体厚さ検出部の出力を微分した値をとり、図中変化点が存在する部分には、「↑」によって示してある。なお、外形寸法が異なる様々な厚さの帳票2がホッパ1に混載されている場合に、重走が発生したときの重走パターンを次に示す。▲1▼には薄い帳票2nが1枚の場合、▲2▼には最大の厚さの帳票2oが1枚の場合、▲3▼には帳票2pの上に帳票2qが重なって重走となっている場合、▲4▼には帳票2rの上に帳票2sが重なって重走となっている場合、▲5▼には帳票2tの上に帳票2uが重なって重走となっている場合、▲6▼には帳票2vの上に帳票2wが重なっている場合を示し、制御部10が▲1▼の場合に算出した帳票2nの厚さをW1、同様に▲2▼の場合に算出した帳票2oの厚さをW2、同様に▲3▼の場合の算出した帳票2pの上に帳票2qが重なって重走となっているときの厚さをW3、同様に▲4▼の場合の算出した帳票2rの上に帳票2sが重なって重走となっているときの厚さをW4、同様に▲5▼の場合の算出した帳票2tの上に帳票2uが重なって重走となっているときの厚さをW5、同様に▲6▼の場合の算出した帳票2vの上に帳票2wが重なって重走となっているときの厚さをW6とし、本実施の形態のイメージスキャナが取り扱う最長の帳票2oの厚さW2をWmax とする。
【0036】
制御部10は、媒体の厚さを検出し、媒体厚さ検出部7の出力値の微分をとり、その出力値に変化点があるか否かを判定し、検出した厚さに変化点が存在する場合に、重走と判断し、また、取り扱う媒体の内で最も厚い媒体の厚さWmax を基準として記憶しておき、厚さの変化が無い場合であって、基準の厚さWmax 以上のときに、重走と判断する。したがって、制御部10は、▲1▼及び▲2▼の場合では、走行上1枚と判断される帳票2内で厚さの変化点がなく、また、厚さWmax よりも薄いため、正常な1枚の走行と判断する。▲3▼、▲4▼及び▲5▼の場合は、いずれも変化点が存在するため、重走と判断する。また、▲6▼の場合は、厚さの変化が無く、算出された帳票2vの上に帳票2wが重なって重走となっているときの厚さをW6が基準の厚さWmax 以上となるため、重走と判断する。
【0037】
図7に、印字による重走検知の説明図を示す。この場合、帳票2は印字部8で搬送の際に、所定位置に所定の文字等のキャラクタが印字されて排出される。このため、重走か否かは、オペレータ自身が印字されたその文字を見て判断することになる。つまり、排出された帳票2の所定位置への所定のキャラクタの印字状態により、帳票2が複数枚重なって走行されたか否かをオペレータに判断させる。制御部10は、上述したように、媒体検出部5で検出した帳票2の有無情報と、帳票2の搬送速度と、媒体検出部5と印字部8の距離から印字位置を算出する。ここでは、図中、重走タイプ別に、重走形態、印字形態及び印字状態を示している。
【0038】
▲1▼は普通の重走の場合であり、略同形の帳票2xの上に帳票2yが重なり、2yのみに上辺印字エリアP1及び下辺印字エリアP2に正規な印字がされ、帳票2xには上辺印字エリアP1及び下辺印字エリアP2の両方に印字がないときで、このとき、オペレータは重走していると判断できる。なお、このとき、一般に、帳票2yのイメージは取得してパソコン13へ送信済みであり、帳票2xのイメージを再度取得する必要があるとオペレータは判断できる。
【0039】
▲2▼は部分的に重なった重走例であり、帳票2xの上に帳票2yが重なり、帳票2yには上辺印字エリアP1が正規に印字され下辺印字エリアP2が一部のみ印字され、帳票2xには上辺印字エリアP1の印字がなく下辺印字エリアP2が一部のみ印字されたときで、このとき、オペレータは重走していると判断できる。なお、このとき、一般に、上記▲1▼と同様に、帳票2yのイメージは取得してパソコン13へ送信済みであり、帳票2xのイメージを再度取得する必要があるとオペレータは判断できる。
【0040】
▲3▼は部分的に重なった重走例であり、帳票2xの上に帳票2yが重なり、帳票2yには上辺印字エリアP1が正規に印字され下辺印字エリアP2が印字されず、帳票2xには上辺印字エリアP1の印字がなく下辺印字エリアP2は正規に印字されたときで、このとき、オペレータは重走していると判断できる。なお、このとき、一般に、上記▲1▼及び▲2▼と同様に、帳票2yのイメージは取得してパソコン13へ送信済みであり、帳票2xのイメージを再度取得する必要があるとオペレータは判断できる。
【0041】
▲4▼は外形寸法の異なる帳票2y,2zの重走例であり、大きな帳票2zの上に小さな帳票2yが重なり、帳票2yの上辺印字エリアP1には部分的な印字があり下辺印字エリアP2にも部分的な印字があり、帳票2zも上辺印字エリアP1には部分的な印字があり下辺印字エリアP2にも部分的な印字があって、子亀タイプの重走とオペレータは判断できる。なお、このとき、一般に、小さい帳票2yのイメージは取得してパソコン13へ送信済みであり、大きい帳票2zのイメージを再度取得する必要があるとオペレータは判断できる。
【0042】
これにより、印字による重走検知では、帳票2の所定位置、例えば、上辺印字エリアと下辺印字エリアに印字を行うようにしたため、オペレータは排出された帳票2の印字エリアを確認して、重走の発生の有無を即座に確認できるようになる。したがって、例えば、図8の(1)に示すように、帳票2zの上に帳票2yが重なって搬送された場合には、排出された帳票2z,2yは、同図の(2)に示すように、帳票2zは上辺印字エリアP1へのみの印字となり、帳票2yは下辺印字エリアP2へのみの印字となるため、オペレータは重走の発生を即座に確認できるようになる。
【0043】
なお、上記実施の形態では、帳票の表面に印字エリアを設定した場合を想定したが、これに限らず、裏面に印字するようにしてもよい。また、イメージ取り込み開始後の上辺印字エリアへの印字、イメージ取り込み完了後の下辺印字エリアへの印字で説明したが、イメージ取得部6と印字部8を逆に配置し、上辺印字エリアへ印字後にイメージの取り込みを開始し、そして、下辺印字エリアへの印字後にイメージ取り込み完了とするようにしてもよい。さらに、イメージ取得部6と印字部8の位置関係は、重走して搬送された帳票2を分離する能力の無い搬送部4内の場合に、印字部8が帳票2の先端及び下端を検出できるのであればどのように配置してもよい。また、上辺印字エリアと下辺印字エリアを分けて印字する場合を想定したが、上辺部から下辺部まで連続又は一定間隔で印字するようにしてもよい。また、帳票2の表面の所定箇所に印字を行った場合を想定したが、印字面を表面に限定するものでなく、裏面でもよいし、両面でも同様な効果が期待できる。
【0044】
上記実施の形態のイメージスキャナによると、外形寸法や厚さの外形が異なる複数の帳票2を取り扱った場合でも、帳票2の重走を容易に検出できる効果が得られるため、従来のように、ホッパ1に積載する媒体外形寸法を備えたり、ホッパ1に積載する帳票2の厚さを揃えたり、厚さの変化点の無い場合以外には帳票2の厚さを予め測定して入力しておく必要がなくなる。
【0045】
【発明の効果】
以上説明したように本発明の媒体取扱装置によると、外形寸法や厚さの外形が異なる複数の媒体を取り扱った場合でも、媒体の重走を容易に検出できる効果が得られるため、従来のように、ホッパ等の媒体セット部に積載する媒体外形寸法を備えたり、ホッパ等の媒体セット部に積載する媒体の厚さを揃えたり、厚さの変化点の無い場合以外には媒体の厚さを予め測定して装置に入力しておく必要がなくなる効果が得られる。したがって、種々の外形の媒体を取り扱っても重走を容易に検知できるため、設計の自由度が増して媒体取扱装置を安価に提供することが可能になる。
【図面の簡単な説明】
【図1】実施の形態のイメージスキャナの構成を示す概念図
【図2】実施の形態のイメージスキャナの概略を示すブロック図
【図3】実施の形態の重走検知処理のフローチャート
【図4】長さによる重走検知の説明図
【図5】外形検査による重走検知の説明図
【図6】厚さによる重走検知の説明図
【図7】印字による重走検知の説明図
【図8】印字による重走検知の具体例の説明図
【符号の説明】
1 ホッパ
2 帳票
3 分離機構
4 搬送部
4a 搬送ローラ
5 媒体検出部
6 イメージ取得部
7 媒体厚さ検出部
8 印字部
9 スタッカ部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a medium handling apparatus having a mechanism for conveying a medium, such as an image scanner, an optical character reading apparatus, a facsimile machine, and a copying machine, and in particular, conveys a form set in an insertion section to read an image and discharge it. This is useful for detecting a heavy run in which a plurality of media such as forms are overlapped when the form is discharged to a section or a form loaded on a hopper is continuously conveyed.
[0002]
[Prior art]
Hereinafter, an image scanner will be described as an example of the medium handling device.
In general, in an image scanner, when a form set in an insertion section is conveyed and an image is read and the form is discharged to a discharge section or a form loaded on a hopper is continuously transferred, There may be heavy running where multiple sheets run. In such a case, the operator must recognize the presence or absence of heavy running, sort out the corresponding form, and re-read the image of the corresponding form. For this reason, the operator transfers the image acquired by the image scanner to an external device such as a personal computer and displays it on a display device such as a CRT, and checks the matching with the read form to determine the presence or absence of heavy running. I went and sorted out the corresponding forms. However, since it takes an enormous amount of time to determine whether or not there is a heavy run and to select a corresponding form, various types of image scanners having a function of judging the detection of heavy run are known.
[0003]
Conventional image scanners only handle forms that have a certain length, thickness, light transmission, etc., and the length, thickness, and light transmission of a single form to be handled are stored in advance for heavy run detection. In addition, it is known to detect heavy running by carrying out length detection, thickness detection, transmission detection, and the like, and comparing the detected amount with the stored amount during conveyance. .
[0004]
For example, (1) Count and display the number of conveyed forms, let the operator count when ejecting, compare the counting results, and if the two numbers differ, When judging, (2) It has means for detecting the thickness of the form, and when it detects heavy run compared with the thickness of one kind of form registered in advance, (3) Detects the thickness of the form. When the thickness of the first form transported from the form loaded on the hopper is detected, and the form transported thereafter detects heavy running compared to the thickness of the first transported form It has been known.
[0005]
In particular, when dealing with forms of different sizes and thicknesses, when obtaining images of the forms and processing the images, the image data is viewed to allow the operator to judge heavy running, It was necessary to judge based on the data difference in the number of processed images.
[0006]
[Problems to be solved by the invention]
The above-described conventional medium handling apparatus, for example, an image scanner having a mechanism for continuously conveying a form loaded on a hopper, has the following problems in order to detect a heavy run of the form and search for the corresponding form.
(1) When detecting and displaying the number of conveyed forms, the operator must count the number of forms loaded on the hopper and compare it with the number of detected forms to confirm the presence or absence of heavy running. In particular, when there is heavy running, the acquired image must be displayed on the CRT, etc., and the operator must check against the loaded form and select the corresponding form. There is a problem that it takes an enormous amount of time to search for the corresponding form.
[0007]
(2) Having a means to detect the thickness of the form, and when detecting heavy run compared to the pre-registered form thickness, measure the thickness of the form loaded on the hopper with a dedicated device. The complicated procedure of inputting thickness information to the device and the form loaded on the hopper all need to be the same thickness, so the troublesome work of preparing the same thickness form is necessary. There is a problem that forms with different thicknesses cannot be conveyed simultaneously.
[0008]
(3) A means for detecting the thickness of the form is detected, the thickness of the first form conveyed from the form loaded on the hopper is detected, and the form conveyed thereafter is the thickness of the first conveyed form. When detecting heavy running, the forms loaded on the hopper must all have the same thickness, which requires complicated work such as preparing forms with the same thickness, and different thicknesses. There is a problem that the forms cannot be transported at the same time.
[0009]
Furthermore, since a conventional medium handling apparatus must use a standard form, it is necessary to classify and process the size and thickness, and there is little versatility for forms. Moreover, since a mechanism for detecting heavy running must be attached, there is a problem that the apparatus becomes complicated and expensive. In particular, when dealing with forms of different sizes and thicknesses, it is not possible to check heavy running until the image is confirmed. For example, if the image capture destination is different from the image processing destination, the heavy running check is performed. There is a problem that you must spend time on.
[0010]
Therefore, the present invention solves the above-mentioned problems, and in particular, even when a form with a different size or thickness is set and processed, the operator can check the form when the image operation is completed, and the heavy running occurs. It is an object to provide a medium handling device that can determine whether or not there is a low cost.
[0011]
[Means for Solving the Problems]
  The present invention relates to a medium handling apparatus that sequentially conveys at least two types of media having different outer shapes and acquires and stores images of the respective media. Criteria for distinguishing between running and running one by oneAs the length of the longest mediumRemember,The length of the medium is detected during transport, and the result of the length is compared with a pre-stored reference length.To judgeSpecialIt is a sign.
[0012]
  Further, the present invention provides a medium handling apparatus that sequentially conveys at least two types of rectangular media having different outer shapes and acquires and stores an image of each medium, and includes at least two types of media having different outer shapes. Distinguish between the case of heavy running that overlaps and the case of running one by oneStandardsMediumDetects the outer shape from the acquired image, recognizes each side of the outer shape, determines the linearity of each side, and determines that it is heavy running when there is no linearity.It is characterized by.
[0013]
  Furthermore, the present invention is a medium handling device that sequentially conveys at least two types of media having different external shapes, and acquires and stores images of the respective media, and at least two types of media having different external shapes are overlapped to run. Distinguishing between heavy running and running one by oneStandardsMediumIf the external shape is detected from the acquired image, each side of the external shape is recognized, the parallelism between the opposing sides is judged, and there is no parallelism, Run and judgeIt is characterized by.
[0014]
  TheAlso,The present inventionIn a medium handling apparatus that sequentially conveys at least two types of media having different external shapes and acquires and stores an image of each medium,Upper side and lower sidePrint a predetermined character on the media and eject the media.The upper side and the lower sideAccording to the printing state of a predetermined character on the operator, the operator can determine whether or not there is a heavy run in which multiple media run.SpecialMarkThe
[0015]
In the following embodiments, heavy run detection by length, heavy run detection by external inspection based on linearity, parallelism and right angle (rectangularity), heavy run detection by thickness, and heavy run by printing. Although the case where all the detection is performed will be described, each may be used independently or may be implemented by appropriately changing the combination.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
  Embodiments of the present invention will be described below with reference to the drawings. Note that the present invention is not limited thereby.
  FIG. 1 is a schematic diagram illustrating a configuration of an image scanner according to an embodiment. The image scanner includes a hopper 1 for loading a plurality of forms 2, a separation mechanism 3 for separating the forms 2 loaded on the hopper 1 one by one, and the separation mechanism 3.IsolatedForm 2 in the direction of the arrow (in the figurerightA transport unit 4 that transports the document 2 at a predetermined speed, a transport roller 4a that functions appropriately with the transport unit 4 to transport the form 2, a medium detection unit 5 that detects the transported form 2, and this medium detection. An image acquisition unit 6 composed of a CCD or the like arranged at a predetermined position from the unit 5, a medium thickness detection unit 7 for detecting the thickness of the form 2 arranged at a predetermined position from the medium detection unit 5, and the medium A printing unit 8 disposed at a predetermined position from the detection unit 5 and a stacker unit 9 for stacking the forms 2 conveyed by the conveyance unit 4 are provided. The printing unit 8 is fixed at a fixed position from the right side of the transport unit 4 and operates on a printing pin (not shown) to print on the form 2 when the form 2 passes below.
[0017]
FIG. 2 is a block diagram illustrating an outline of the image scanner according to the embodiment. The description will be given with reference to FIG. 1 as appropriate. This image scanner includes a counter 10a, a memory 10b, and the like, a control unit 10 that controls the whole, a medium conveyance unit 15 that conveys a form 2 by controlling the separation mechanism 3, the conveyance unit 4, and the conveyance roller 4a, and a form 2 A medium detecting unit 5 for detecting the image, an image acquiring unit 6 for acquiring the image of the form 2, an image memory unit 11 for storing the image acquired by the image acquiring unit 6, and an interface unit for transferring the image to the personal computer 13 as an external device 12, a medium thickness detecting unit 7 for detecting the thickness of the conveyed form 2 and a printing unit 8 for printing on the form 2, and the respective units are connected by an internal bus 14. The personal computer 13 is connected with a keyboard 13a operated by an operator.
[0018]
  FIG. 3 shows a flowchart of the heavy run detection process according to the embodiment, which will be described with reference to FIGS. 1 and 2 as appropriate. Note that the image scanner configured as described above isformAssume that various types of forms 2 having different dimensions and thicknesses are handled, and several types of forms 2 are loaded on the hopper 1. The form 2 is a rectangular sheet having a predetermined range of external dimensions and a predetermined range of paper thickness for each type.
[0019]
First, the operator operates the keyboard 13a of the personal computer 13 and inputs various data such as an instruction on whether or not to print, print characters, and an upper side print area and a lower side print area which will be described later (S1). Next, when the operator sets the corresponding form in the hopper 1 and presses an execution key (not shown) on the keyboard 13a (S2), the control unit 10 moves the process to S3. The control unit 10 determines whether or not the form 2 is set in the hopper 1 depending on whether or not the medium detection unit 5 detects the form 2 by a predetermined time after the execution key is pressed. If it is determined that there is 2, process S4If it is determined that there is no form 2 without being detected, the process ends (S3). Next, the control unit 10 issues a command to the medium transport unit 15, separates the form 2 loaded on the hopper 1 by the separation mechanism 3, and transports the form 2 by the transport unit 4 and the transport roller 4a (in FIG. 1). It is conveyed in the right direction (S4). The form 2 being conveyed passes below the medium detection unit 5, and at that time, the leading end and the trailing end are detected by the medium detection unit 5. The medium detection unit 5 sends the detected front and rear end information to the control unit 10. Then, the control unit 10 calculates the length of the form 2 from the relationship between the speed of the form 2 being conveyed and the detected front and rear ends (S5). When this length is calculated, the control unit 10 performs heavy running detection processing for detecting heavy running according to the length of the form 2. As will be described later, this heavy run detection process stores the length of the longest form 2 among the handled forms 2 as a reference, and compares the result of the detected length with a pre-stored reference length. If it is longer than the reference length, processing is performed so as to determine that it is a heavy run (S6). If it is determined that the run is heavy, the corresponding form 2 is discharged to the stacker unit 9, and an error is displayed on the display screen of the personal computer 13 to terminate the process. If it is determined that it is, the process proceeds to S8 (S7).
[0020]
Next, when the form 2 passes below the image acquisition unit 6, the image acquisition unit 6 acquires the surface image (S8). The image acquisition unit 6 stores the acquired image in the image memory unit 11, and the control unit 10 calls up the image from the image memory unit 11 and performs heavy run detection processing by an outer shape inspection described later (S 9). In the heavy run detection process here, all the media to be handled must be rectangular, and this is set in the memory 10b before the form 2 is transported. In addition, the criteria for distinguishing between the case of heavy running and the case of running one by one are the linearity of each side of the outer shape, the parallelism between opposite sides of the outer shape, or the right angle between adjacent sides of the outer shape. In the case of linearity, an external shape is detected from the acquired image, each side of the external shape is recognized, the linearity of each side is determined, and when there is no linearity, it is determined that heavy running is performed. In the case of parallelism, the outer shape is detected from the acquired image, each side of the outer shape is recognized, the parallelism between the opposite sides is judged, and when there is no parallelism, it is judged as heavy running. Also, in the case of right angle, when the outline is detected from the acquired image, each side of the outline is recognized, the internal angle between adjacent sides is recognized and the right angle is judged, and there is no right angle Judged as heavy running. When the control unit 10 determines that it is a heavy run after executing the outer shape inspection process, the control unit 10 discharges the corresponding form 2 to the stacker unit 9 and notifies the display screen of the personal computer 13 by displaying an error or the like. When it is determined that the image has been transported normally by one sheet instead of heavy running, the image is transferred to the personal computer 13 via the interface unit 12, and the process proceeds to S11 (S10).
[0021]
Thereafter, the form 2 passes under the medium thickness detection unit 7, and the thickness is detected by the medium thickness detection unit 7 at that time. The medium thickness detection unit 7 sends the detected thickness to the control unit 10. The control unit 10 executes heavy run detection processing based on the detected thickness value of the form 2 (S11). In this heavy run detection process, as will be described later, when there is a change point in the detected thickness, it is judged as heavy run, and the thickness of the thickest medium in the form 2 to be handled is stored in advance. If the thickness does not change and the thickness exceeds the reference thickness, it is determined that the vehicle is heavy running. If the control unit 10 determines that the run is heavy, the control unit 10 discharges the corresponding form 2 to the stacker unit 9 and displays an error display on the display screen of the personal computer 13 to terminate the process. If it is determined that one sheet is normally conveyed, the process proceeds to S13 (S12).
[0022]
Thereafter, the form 2 passes below the printing unit 8, and at that time, the printing unit 8 prints various data and performs predetermined printing at a predetermined position (S13). In this way, when a predetermined character is printed at a predetermined position on the form 2, the operator can determine whether or not a heavy run has occurred according to the printing state of the predetermined character at the predetermined position on the discharged form 2. Can do. The predetermined position for printing the predetermined character is preferably the upper side print area and the lower side print area of the form 2, and this case is also assumed here. Further, whether or not to print on the form 2, various data such as characters to be printed and positions of the upper side print area and the lower side print area are inputted in advance by the operator by operating the keyboard 13 a of the personal computer 13. It is stored in 10b. The positions of the upper side print area and the lower side print area are defined by the distance from the upper side of the form 2 to the upper end of the upper side print area and the distance from the lower side of the form 2 to the lower end of the lower side print area. Are input by operating the keyboard 13a and stored in the memory 10b of the control unit 10. Furthermore, the predetermined character may be of any kind. Further, the size of the predetermined character printed on the form 2 only needs to be within the width of the printing unit 8. For example, 1 to 4 characters are printed in the upper side print area and 1 to 16 characters are printed in the lower side print area. However, the number of characters is merely an example and is not limited thereto.
[0023]
Therefore, when printing is specified for the form 2 being handled, when the operator operates the keyboard 13a of the personal computer 13 to input a command for executing image reading of the form 2, the control unit 10 of the image scanner Data such as a predetermined character is extracted from the memory 10b, a print position is calculated as described later, and a predetermined character is printed at a predetermined position when the image of the form 2 is read.
[0024]
In calculating the print position, the control unit 10 reads the distance from the upper side of the form 2 to the upper end of the upper side print area and the distance from the lower side of the form 2 to the lower end of the lower side print area from the memory 10b, and the medium detection unit 5 reads the form. A value obtained by dividing the sum of the distance from the medium detection unit 5 to the printing unit 8 and the distance from the upper side of the form 2 to the upper end of the upper side printing area by the conveyance speed of the form 2 after detecting the upper side of 2 Specifically, after a certain number of milliseconds, the printing unit 8 reaches the upper end of the upper side printing area, or the medium detection unit 5 detects the lower side of the form 2 and prints from the medium detection unit 5 for a predetermined time. The value obtained by dividing the sum of the distance to the part 8, the distance from the lower side of the form 2 to the upper end of the lower side printing area, and the distance for the number of characters to be printed in the lower side printing area by the conveyance speed of the form 2, specifically, how many milliseconds Later, the printing unit 8 is the upper side printing area. Carried out in or reach the top.
[0025]
Finally, the form 2 that has been printed is discharged to the stacker unit 9 (S14). Thereafter, the same processing is repeated until the form 2 on the hopper 1 disappears.
FIG. 4 is an explanatory diagram of heavy run detection by length. In the figure, the upper row shows the form status, the lower graph shows the length on the horizontal axis, the output value of the medium detection unit 5 on the vertical axis, and the output value of the form presence / absence determination slice is parallel to the horizontal axis. This is indicated by a broken line. The output value may be set to a value smaller than the output value of the medium detection unit 5 having the shortest form 2a that can be conveyed. Also, in case (1) there is one short form 2a, in case (2) there is one longest form 2b, in case (3), the form 2c and form 2d overlap and become a run. The length of the form 2a calculated when the control unit 10 is (1) is H1, and the length of the form 2b is calculated when the control unit 10 is (2) is H2, and similarly is (3). The length when the calculated form 2c and the form 2d overlap is H3, and the length H2 of the longest form 2b handled by the image scanner of this embodiment is Hmax.
[0026]
In the case of heavy running detection by length, the control unit 10 compares the calculated length with Hmax, and determines that it is heavy running when the calculated length is longer than Hmax. That is, in the case of (1), H1 is equal to or lower than Hmax, and in the case of (2), H2 is equal to Hmax. Therefore, in the cases of (1) and (2), it is determined that one sheet is normal. In the case of (3), since H3 is longer than Hmax, it is determined as heavy running.
[0027]
FIG. 5 is an explanatory diagram of heavy run detection by external inspection. In the figure, (1) shows an example of a heavy running pattern, and (2) shows an example of an outer shape inspection of an image acquired on the image memory unit 11. In the case of this heavy run detection, it is preferable that the transport unit 4 of the image acquisition unit 6 is black, for example, so that the outer shape of the white form 2 can be clearly recognized. To do. Further, as described above, the form 2 is intended for a plurality of rectangular shapes having different external dimensions.
[0028]
As shown in (1), in the heavy running pattern that can be detected by the outer shape inspection, (1) and (2) when the sides of the form 2 are not straight lines, (3) when the opposite sides of the form 2 are not parallel, 4 There are four cases where the external form of the form 2 is not rectangular. (1) is a state in which the form 2f overlaps the form 2e, and a part of one side as an outer shape protrudes from the form 2f, and the part is not a straight line. (2) is a state in which the form 2h overlaps the form 2g, and a part of one side as an outer shape protrudes from the form 2h, and the part is not a straight line. (3) is a state in which the form 2j overlaps the form 2i and the opposing sides as the outer shape are not parallel to each other. (4) is the case where the form 2l is overlapped on the form 2k and the form 2m is overlapped on the form 2l, and there is no linearity and no parallelism between the opposing sides as the outer shape. State. In the figure, the traveling direction is upward.
[0029]
As shown in (2), on the image memory unit 11, the black portion of the acquired image is represented as the image of the transport unit 4, and the white portion is represented as the image of the form 2. Here, characters and the like are omitted in the image of the white portion of the form 2. Note that the address space on the image memory unit 11 is a coordinate (X in the horizontal axis, Y in the vertical axis, + X in the right direction and + Y in the lower direction in the figure, with the upper left in the figure as the origin (0, 0). X, Y). Also, the left side edge of the rectangular form 2 is the side L, the right side edge is the side R, the upper side edge is the side T, and the lower side edge is the side B. (1) Linearity inspection example of the side L, (2) Opposing Next, an example of inspection of parallelism of sides (side L and side R), and an example of inspection of rectangularity inspected by side L and side T will be described in order.
[0030]
(1) In the linearity inspection example of the side L, predetermined addresses on the Y axis (0, Y (1)), (0, Y (2)), (0, Y (3)), (0, Y (4)) from black to white on the address parallel to the X-axis, extract the change point coordinates (X (1), Y (1)), (X (2), Y (2)), (X (3), Y (3)), (X (4), Y (4)). Next, the change point coordinates (X (1), Y (1)), (X (2), Y (2)), (X (3), Y (3)), (X (4), Y (4) From (), the slope LT of the left side L at a predetermined interval is obtained by a predetermined calculation formula, and the linearity of the left side L is determined by the slope between the predetermined intervals. For example, when the slope LT of the left side L is obtained from the change point coordinates (X (1), Y (1)), (X (4), Y (4)) of the left side L, the slope LT = (X (4) − X (1)) / (Y (4) -Y (1)). Then, the slope LT (i) of the left side L between the change point coordinates is obtained by the following equations.
LT (i) = (X (1 + i) -X (i)) / (Y (1 + i) + Y (i)) (i = 1 to 3)
And then
| (LT−LT (i)) / LT | ≦ 0.05 (i = 1 to 3)
To determine the linearity of the left side L. The same processing is performed for each side T, R, and B to determine the slopes TT, RT, and BT, and the linearity of each is determined.
[0031]
(2) In the inspection example of the parallelism of the opposing sides (side L and side R), the slopes of the opposing sides (LT and RT or TT) are obtained from the slopes of the sides obtained by the above-described processing for obtaining the linearity. And BT), the parallelism between the opposing sides is determined. That is, the following relational expression of the slope LT of side L and the slope RT of side R:
│ (LT -RT) / RT │≤0.05
To determine the parallelism between the side L and the side R facing each other. Note that the same processing is performed on the sides T and B to determine the parallelism between the sides T and B.
[0032]
(3) In the inspection example of the rectangularity inspected by the side L and the side T, the adjacent side L and side T, side T and side R, from the inclination of each side obtained by the processing for obtaining the linearity described above, By detecting the angles of side R and side B and side B and side L, the rectangularity is determined. That is, the following relational expression of the inclination T of the side T and the inclination LT of the side L:
0.95 ≦ | LT ・ TT | ≦ 1.05
The right angle between the side L and the side T is determined by Note that the same processing is performed for the sides T and R, the sides R and B, and the sides B and L to determine the orthogonality between the sides to determine the rectangularity.
[0033]
Therefore, the control unit 10 reads the image data of the form 2 from the image memory unit 11, and changes the image data at a predetermined interval from the outer edge of the outer shape toward the inner edge, in this case, from black to white. An inclination is calculated by detecting a change point that changes to an angle, and using this inclination, the linearity of each side, the parallelism of opposite sides, and the rectangularity of the outer shape are judged to detect heavy running.
[0034]
In the present embodiment, as shown in (2), it is preferable to determine two orthogonal coordinate axes in advance and detect the changing point from the direction along the coordinate axes, as shown in (2) in the present embodiment. Although this case is assumed here, the present invention is not limited to this as long as the change point can be detected and the linearity of each side, the parallelism of opposing sides, and the rectangularity of the outer shape can be determined.
[0035]
FIG. 6 is an explanatory diagram of heavy run detection by thickness. In the figure, the upper graph shows the form status, the interruption graph shows the length on the horizontal axis, the output value of the media thickness detector 7 on the vertical axis, and the output value of the form presence / absence determination slice is parallel to the horizontal axis. This is indicated by a broken line. The output value may be set to a value smaller than the output value of the medium thickness detection unit 7 having the thickness of the thinnest form 2n that can be transported. In the lower graph, the horizontal axis indicates the length, the vertical axis indicates the value obtained by differentiating the output of the medium thickness detection unit, and the portion where the change point exists in the figure is indicated by “↑”. A heavy running pattern when heavy running occurs when forms 2 having various thicknesses with different thicknesses are mixedly mounted on the hopper 1 is shown below. In case (1), there is one thin form 2n, in case (2), there is one form 2o with the maximum thickness, and in case (3), the form 2q overlaps the form 2p. In the case of (4), when the form 2s is overlaid on the form 2r, and the form 2u is overrun, and in the case of (5), the form 2u is overlaid on the form 2t. , (6) shows the case where the form 2w is overlaid on the form 2v, and the thickness of the form 2n calculated when the control unit 10 is (1) is W1, and similarly calculated for (2). The thickness of the selected form 2o is W2, and the thickness when the form 2q overlaps the calculated form 2p in the case of (3) is overlapped with W3, and similarly the case of (4) The thickness when the form 2s is overlapped with the calculated form 2r is W4, and similarly on the calculated form 2t in the case of (5). The thickness when the sheet 2u is overlapped and overruns is W5. Similarly, the thickness when the form 2w is overlaid and overlapped with the calculated form 2v in the case of [6] is W6. And the thickness W2 of the longest form 2o handled by the image scanner of the present embodiment is Wmax.
[0036]
The control unit 10 detects the thickness of the medium, differentiates the output value of the medium thickness detection unit 7, determines whether there is a change point in the output value, and the change point is detected in the detected thickness. If it exists, it is judged as heavy running, and the thickness Wmax of the thickest medium among the handled media is stored as a reference, and there is no change in the thickness, and the reference thickness Wmax or more It is judged that it is heavy running. Therefore, in the case of (1) and (2), the control unit 10 is normal because there is no thickness change point in the form 2 that is judged to be one sheet for traveling and it is thinner than the thickness Wmax. Judged as one run. In cases (3), (4), and (5), since there is a change point, it is determined that the vehicle is in heavy running. In the case of (6), there is no change in thickness, and W6 is equal to or greater than the reference thickness Wmax when the form 2w overlaps the calculated form 2v and overlaps. Therefore, it is judged as heavy running.
[0037]
FIG. 7 is an explanatory diagram of heavy run detection by printing. In this case, when the form 2 is conveyed by the printing unit 8, a character such as a predetermined character is printed at a predetermined position and discharged. For this reason, whether or not it is a heavy run is determined by looking at the characters printed by the operator himself. In other words, the operator determines whether or not a plurality of forms 2 are traveled in accordance with the printing state of a predetermined character at a predetermined position of the discharged form 2. As described above, the control unit 10 calculates the print position from the presence / absence information of the form 2 detected by the medium detection unit 5, the conveyance speed of the form 2, and the distance between the medium detection unit 5 and the print unit 8. Here, in the drawing, the heavy running mode, the printing mode, and the printing state are shown for each heavy running type.
[0038]
(1) is a case of normal heavy running, a form 2y is overlapped on a substantially identical form 2x, and normal printing is performed on the upper side print area P1 and lower side print area P2 only on 2y, and the upper side of the form 2x is displayed. When there is no printing in both the printing area P1 and the lower side printing area P2, the operator can determine that the vehicle is running at this time. At this time, generally, the operator can determine that the image of the form 2y has been acquired and transmitted to the personal computer 13, and the image of the form 2x needs to be acquired again.
[0039]
(2) is an example of a partially overlapped run. The form 2y is overlapped on the form 2x, the upper side print area P1 is normally printed on the form 2y, and only a part of the lower side print area P2 is printed. In 2x, the upper side print area P1 is not printed and only a part of the lower side print area P2 is printed. At this time, the operator can determine that the vehicle is running heavily. At this time, generally, similarly to the above (1), the operator can determine that the image of the form 2y has been acquired and transmitted to the personal computer 13, and that the image of the form 2x needs to be acquired again.
[0040]
(3) is an example of a partially overlapped run. The form 2y is superimposed on the form 2x, and the upper side print area P1 is normally printed and the lower side print area P2 is not printed on the form 2y. Is when the upper side print area P1 is not printed and the lower side print area P2 is printed normally. At this time, the operator can determine that the vehicle is running heavily. At this time, generally, as in the above (1) and (2), the operator determines that the image of the form 2y has been acquired and transmitted to the personal computer 13 and the image of the form 2x needs to be acquired again. it can.
[0041]
{Circle over (4)} is an example of overlap of the forms 2y and 2z having different external dimensions. The small form 2y overlaps the large form 2z, and the upper side print area P1 of the form 2y has partial printing, and the lower side print area P2 There is also partial printing, and the form 2z also has partial printing in the upper side printing area P1 and partial printing in the lower side printing area P2. At this time, in general, the operator can determine that the image of the small form 2y has been acquired and transmitted to the personal computer 13, and the image of the large form 2z needs to be acquired again.
[0042]
Thereby, in the heavy run detection by printing, since printing is performed at a predetermined position of the form 2, for example, the upper side print area and the lower side print area, the operator confirms the print area of the discharged form 2 and performs heavy run. It will be possible to immediately check whether or not the occurrence of Therefore, for example, as shown in (1) of FIG. 8, when the form 2y is conveyed over the form 2z, the discharged forms 2z and 2y are as shown in (2) of FIG. In addition, since the form 2z is printed only in the upper side print area P1, and the form 2y is printed only in the lower side print area P2, the operator can immediately confirm the occurrence of heavy running.
[0043]
In the above embodiment, it is assumed that a print area is set on the front side of the form. However, the present invention is not limited to this, and printing may be performed on the back side. In addition, the printing in the upper side printing area after the start of image capturing and the printing in the lower side printing area after the completion of image capturing have been described. However, the image acquisition unit 6 and the printing unit 8 are arranged reversely and after printing in the upper side printing area. Image capture may be started, and image capture may be completed after printing in the lower print area. Further, the positional relationship between the image acquisition unit 6 and the printing unit 8 is that the printing unit 8 detects the leading edge and the bottom edge of the document 2 when the conveyance unit 4 is not capable of separating the document 2 that has been transported by heavy running. If possible, it may be arranged in any way. In addition, although it is assumed that the upper side print area and the lower side print area are printed separately, the upper side part and the lower side part may be printed continuously or at regular intervals. Further, although it is assumed that printing is performed at a predetermined position on the front surface of the form 2, the printing surface is not limited to the front surface, and the back surface may be used.
[0044]
According to the image scanner of the above-described embodiment, even when a plurality of forms 2 having different external dimensions and thicknesses are handled, the effect of easily detecting overruns of the form 2 can be obtained. The thickness of the form 2 is measured and input in advance unless there is an outer dimension of the medium to be loaded on the hopper 1, the thickness of the form 2 to be loaded on the hopper 1 is uniform, or there is no thickness change point. There is no need to keep it.
[0045]
【The invention's effect】
As described above, according to the medium handling device of the present invention, even when a plurality of media having different external dimensions and thicknesses are handled, the effect of easily detecting the heavy running of the medium can be obtained. In addition, the thickness of the medium except for the case where the outer dimensions of the medium loaded on the medium setting unit such as a hopper are provided, the thickness of the medium loaded on the medium setting unit such as the hopper is uniform, or the thickness does not change. It is possible to obtain an effect that it is not necessary to previously measure and input to the apparatus. Therefore, even if a medium having various external shapes is handled, heavy running can be easily detected, so that the degree of freedom in design is increased and a medium handling device can be provided at a low cost.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram illustrating a configuration of an image scanner according to an embodiment.
FIG. 2 is a block diagram showing an outline of the image scanner according to the embodiment.
FIG. 3 is a flowchart of heavy run detection processing according to the embodiment;
FIG. 4 is an explanatory diagram of heavy run detection by length.
FIG. 5 is an explanatory diagram of heavy run detection by external inspection.
FIG. 6 is an explanatory diagram of heavy run detection by thickness.
FIG. 7 is an explanatory diagram of heavy run detection by printing.
FIG. 8 is an explanatory diagram of a specific example of heavy run detection by printing.
[Explanation of symbols]
1 Hopper
2 forms
3 Separation mechanism
4 Transport section
4a Transport roller
5 Medium detector
6 Image acquisition unit
7 Medium thickness detector
8 Print section
9 Stacker

Claims (4)

外形の異なる少なくとも2種類の媒体を順に搬送し、各媒体のイメージを取得して記憶する媒体取扱装置において、
外形の異なる少なくとも2種類の媒体同士が、複数枚重なって走行する重走の場合と1枚毎の走行の場合とを区別する基準として、取り扱う媒体の中で最も長い媒体の長さを記憶しておき、
搬送の際に媒体の長さを検出し、その長さの結果を予め記憶してある基準の長さと比較し、その基準の長さ以上の場合に、重走と判断することを特徴とする媒体取扱装置。
In a medium handling device that sequentially conveys at least two types of media having different external shapes and acquires and stores an image of each medium,
The length of the longest medium among the media to be handled is stored as a criterion for distinguishing between the case of heavy running in which at least two types of media having different external shapes are overlapped and running one by one. And
The length of the medium is detected at the time of conveyance, the result of the length is compared with a reference length stored in advance, and if it is longer than the reference length, it is judged as heavy running. Medium handling device.
外形の異なる少なくとも2種類の矩形状の媒体を順に搬送し、各媒体のイメージを取得して記憶する媒体取扱装置において、
外形の異なる少なくとも2種類の媒体同士が、複数枚重なって走行する重走する場合と、1枚毎の走行の場合とを区別する基準を媒体外形の各辺の直線性とし、取得したイメージから外形を検出し、その外形の各辺を認識して、各辺の直線性を判断し、直線性がない場合に、重走と判断することを特徴とする媒体取扱装置。
In a medium handling device that sequentially conveys at least two types of rectangular media having different external shapes and acquires and stores an image of each medium ,
From the acquired image, the linearity of each side of the medium outer shape is used as a reference for distinguishing between the case where the two or more types of media having different outer shapes run with multiple sheets overlapping each other and the case of running for each sheet. A medium handling device characterized by detecting an outer shape, recognizing each side of the outer shape, determining the linearity of each side, and determining that there is no linearity when there is no linearity.
外形の異なる少なくとも2種類の媒体を順に搬送し、各媒体のイメージを取得して記憶する媒体取扱装置において、
外形の異なる少なくとも2種類の媒体同士が、複数枚重なって走行する重走する場合と、1枚毎の走行の場合とを区別する基準を媒体外形の相対向する辺同士の平行性とし、取得したイメージから外形を検出し、その外形の各辺を認識して、対向する辺同士の平行性を判断し、平行性がない場合に、重走と判断することを特徴とする媒体取扱装置。
In a medium handling device that sequentially conveys at least two types of media having different external shapes and acquires and stores an image of each medium ,
Acquired by using the parallelism of opposite sides of the medium outer shape as a reference for distinguishing between the case of heavy running in which a plurality of media having different outer shapes travel with multiple sheets overlapping each other and the case of traveling for each sheet A medium handling device characterized by detecting an outer shape from an image, recognizing each side of the outer shape, determining parallelism between opposing sides, and determining that there is no parallelism when there is no parallelism.
外形の異なる少なくとも2種類の媒体を順に搬送し、各媒体のイメージを取得して記憶する媒体取扱装置において、
搬送の際に、媒体の上辺部及び下辺部に所定のキャラクタを印字して媒体を排出し、排出された媒体の前記上辺部及び下辺部への所定のキャラクタの印字状態により、媒体が複数枚重なって走行する重走の発生の有無をオペレータに判断させるようにしたことを特徴とする媒体取扱装置。
In a medium handling device that sequentially conveys at least two types of media having different external shapes and acquires and stores an image of each medium,
During transport, a predetermined character is printed on the upper side and the lower side of the medium, the medium is discharged, and a plurality of media are printed depending on the printing state of the predetermined character on the upper side and the lower side of the discharged medium. A medium handling apparatus characterized in that an operator is allowed to determine whether or not there is heavy running that overlaps.
JP32770899A 1999-11-18 1999-11-18 Media handling device Expired - Fee Related JP4253959B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32770899A JP4253959B2 (en) 1999-11-18 1999-11-18 Media handling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32770899A JP4253959B2 (en) 1999-11-18 1999-11-18 Media handling device

Publications (2)

Publication Number Publication Date
JP2001139188A JP2001139188A (en) 2001-05-22
JP4253959B2 true JP4253959B2 (en) 2009-04-15

Family

ID=18202109

Family Applications (1)

Application Number Title Priority Date Filing Date
JP32770899A Expired - Fee Related JP4253959B2 (en) 1999-11-18 1999-11-18 Media handling device

Country Status (1)

Country Link
JP (1) JP4253959B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2841487B1 (en) * 2002-06-26 2004-08-20 Solystic METHOD FOR DETECTING SINGLE PLIERS AND MULTIPLE PLUG PLUGS IN A POSTAL SORTING FACILITY
JP4853073B2 (en) * 2006-03-27 2012-01-11 沖電気工業株式会社 Form classification processing system, electronic medium receipt creation method and delivery method
JP4844442B2 (en) * 2007-03-23 2011-12-28 株式会社ダイフク Book grabber detection device
JP2009035367A (en) * 2007-07-31 2009-02-19 Seiko Epson Corp Complex processing system and control method of the same

Also Published As

Publication number Publication date
JP2001139188A (en) 2001-05-22

Similar Documents

Publication Publication Date Title
US5438426A (en) Image information processing apparatus
US7194144B1 (en) Document image processing device, document image merging method, and storage medium recording a document image merging program
US8416448B2 (en) Printing apparatus
US8113644B2 (en) Image forming apparatus and image forming method
JP2018031963A (en) Image forming apparatus
EP2785033B1 (en) Image inspection system and program
WO2013140563A1 (en) System for reading paper sheet serial number, and method for reading paper sheet serial number
JP4249649B2 (en) Vertical collating machine
JP2007173912A (en) Print inspection apparatus
US10997406B2 (en) Image processing apparatus for determining proper reading order of documents
JP4253959B2 (en) Media handling device
JP2003136818A (en) Method and system for detecting image quality abnormality
JP2024103655A (en) Apparatus and method for inspecting printed matter
EP4060413B1 (en) Image forming system, inspection device, and inspection method
JPH11275302A (en) Picture reader
JP4443133B2 (en) Program for realizing slip processing apparatus and slip processing method
EP4060417A1 (en) Inspection device, image forming system, inspection method, and carrier medium
JP2007172029A (en) Print inspection device
JP2001146361A (en) Image forming device
JP6274121B2 (en) Image forming apparatus
JP2021095240A (en) Image forming apparatus
JP2019216306A (en) Reading device
JPH05183746A (en) Picture processing system
JP2011186848A (en) Paper sheet processor and paper sheet processing method
JPH07239902A (en) Optical character reader

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060131

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080930

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20081007

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20081205

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20090106

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20090119

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120206

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120206

Year of fee payment: 3

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120206

Year of fee payment: 3

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130206

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140206

Year of fee payment: 5

LAPS Cancellation because of no payment of annual fees