201210836 六、發明說明： 【發明所屬之技術領域】 本發明係關於具備保持器及刀片之膏料印刷用刮刀 及使用此刮刀之膏料印刷裝置、配線基板之製造方法。 【先前技術】 以往’作爲將電子零件等接合於配線基板上之連接 子的方法’己知有一種利用銲料凸塊的方法。通常，此 銲料凸塊’係藉由在形成於配線基板之被印刷面的複數 連接端子上使用銲膏印刷裝置進行銲膏印刷後，進行回 (reflow)以將銲膏印刷層熔融而形成。 第1 〇圖顯示具備膏料印刷用刮刀1 04之銲膏印刷裝 1 0 1的一習知例，該膏料印刷用刮刀丨04具有保持器i 及刀片103。藉由銲膏印刷裝置1〇1而於連接端子106 印刷銲膏P 1的作業順序如下。 在使配線基板107水平地保持於未圖示之作業台上 狀態下，將遮罩1 0 5重疊配置於配線基板1 0 7之被印刷 上。然後，使刮刀104之刀片103接觸於遮罩105的上语 於其行進方向側供給銲膏P 1。在此狀態下使刮刀1 04沿 罩105之上面水平地移動。於是，藉由刀片103將銲膏 塡充於遮罩通孔內，而於連接端子1 0 6上形成銲膏印 層。又，當使遮罩1 05離版後進行回流，則可使銲膏印 層熔融而成爲銲料凸塊。 然而，在此種印刷裝置1 0 1中，當在印刷時使銲膏 朝規定方向移動時，銲膏P1會在刮刀寬度方向上成爲長 端 種 個 流 置 02 上 的 面 ί * 遮 Ρ 1 刷 刷 Ρ 1 棒 201210836 狀而以滾動方式旋轉（滾動（rolling))。在此情況下，提高膏 料印刷性之結果’可容易形成形狀一致之良好的印刷層。 另外，若滾動之啓動快的話，則不需要較大地取得刮刀之 行程，所以’可防止裝置之大型化，而有助於在大型配線 基板上進行印刷。 然而’在第1 〇圖所示之習知例的印刷裝置1 〇】的情況 下，膏料P1容易附著於刮刀104之行進方向側的廣範圍面 積上，所以’不能說是滾動性必定良好，而有根據條件， 膏料P1不於遮罩板上轉動而是直接移動的情況。故而，因 膏料印刷性之劣化’銲膏之塡充量會變動，結果變得難以 形成形狀一致之良好的印刷層。另外，即使膏料p 1進行轉 動，亦有滾動啓動（r 01 π n g s t a r t)變慢的情況。 根據上述情事，以往提出一種銲膏印刷裝置，其在使 刀片保持於保持器之保持凹部的結構之刮刀上，藉由於該 刀片前端部之行進方向側面設置逃逸凹部，以防止膏料附· 著於該側面（例如，參照專利文獻1 )。 [先前技術文獻〕 〔專利文獻〕 〔專利文獻1〕日本特開平11-20128號公報 【發明内容】 〔發明所欲解決之課題〕 在以往之普通印刷裝置中使用的刮刀，係前面及後面 無區別之單純且具有對稱之截面形狀的構件，相對於此， 在專利文獻1記載之印刷裝置中使用的刮刀，係構成爲僅 .201210836 於單側面具有逃逸凹部，而成爲相對較爲複雜且具有非對 稱之截面形狀的構件。因此，於專利文獻1記載之印刷裝 置中，必須特別製作或購入專用之異形刮刀，在這方面會 造成成本性及通用性的劣化。另外，在因使用而引起磨損 或劣化的情況下，若是以往之普通刮刀，則亦可使前面及 後面翻轉使用，但專利文獻1記載之刮刀，則無法使前後 翻轉使用。這點亦是造成成本性下降的原因之一。 本發明係鑑於上述課題而完成的發明，其目的在於提 供一種膏料印刷用刮刀及膏料印刷裝置，能在不損害到刀 片之成本性及通用性下提高膏料之滾動性，且可形成良好 之印刷層。另外，本發明之另一目的在於，提供一種能以 高良率製造具有形狀整齊之良好導體部的配線基板的方 法。 〔用於解決課題之手段〕 於是，作爲用於解決上述課題之手段（手段1)，係一種 膏料印刷用刮刀，其具備：保持器，係前端部具有保持凹 部；及彈性體製之刀片，係保持於該保持凹部，具有一部 分從該保持凹部突出的刀片突出部；藉由在朝該刀片之行 進方向側供給膏料的狀態下沿被印刷面移動而印刷該膏 料，該膏料印刷用刮刀之特徵爲：該刀片突出部之行進方 向側的平面或凹曲面之第一傾斜面與該保持器前端部之行 進方向側的平面或凹曲面之第二傾斜面，係連續地配置； 並且以將形成該第二傾斜面之前端的第二前端部、與形成 該第二傾斜面之後端的第二後端部連結的第二假想平面之 201210836 相對於該被印刷面的傾斜角度，係以比將形成該第一傾斜 面之前端的第一前端部與形成該第一傾斜面之後端的第一 後端部連接的第一假想平面之相對於該被印刷面的傾斜角 度小之方式設定。另外’作爲用於解決上述課題之.另一手 段（手段2) ’係一種膏料印刷用刮刀，其具備··保持器，係 前端部具有保持凹部；及彈性體製之刀片，其保持於該保 持凹部’具有一部分從該保持凹部突出的刀片突出部；藉 由在朝該刀片之行進方向側供給膏料的狀態下沿被印刷面 移動而印刷該膏料，該膏料印刷用刮刀之特徵爲··該刀片 突出部之行進方向側的面之第一傾斜面、與該保持器前端 部之行進方向側的面之第二傾斜面，係連續地配置，並且 該第二傾斜面對該被印刷面傾斜角度，係以成爲比該第一 傾斜面對該被印刷面之的傾斜角度小的方式設定。 因此，在手段1、2記載之發明中，若在印刷時使刮刀 移動’膏料便先沿第一傾斜面滑動引導，順暢地將膏料供 予與第一傾斜面連續配置之第二傾斜面側，再沿第二傾斜 面滑動引導。因爲第二傾斜面對被印刷面（或第二假想平面） 之傾斜角度，係比第一傾斜面對被印刷面之（或第一假想平 面）傾斜角度小，所以，此時膏料之流動方向被改變爲容易 滾動的方向。換言之，刮刀之驅動力變得容易被轉換爲膏 料之轉動力。其結果，不用特別於刀片設置逃逸凹部，亦 可輕易地引起滾動，並且滾動啓動亦變快。因此，能在不 損害到刀片之成本性及通用性下提高膏料之滾動性，可形 成良好之印刷層。 201210836 亦可在保持器上比第二傾斜面更靠近基端側處形成沿 刮刀寬度方向延伸之逃逸凹部。若爲此構成，即使被第二 傾斜面滑動引導之膏料欲朝第二傾斜面的更上方行進，但 因逃逸凹部之存在而阻止其移動，結果可防止膏料附著於 廣範圍之面積上。因此，可避免屬使得滾動性下降之原因 的膏料之滑動阻力增大的情況。 在此，形成保持器之材料並無特別限定，而可任意地 選擇，但最好使用剛性比由硬質橡膠等之彈性體構成的刀 片高的材料（金屬、陶瓷、樹脂等之材料）。其理由爲在印 刷時會對刮刀施加按壓力，此時需要不會使刀片產生位置 偏差而確實地予以保持。 保持器之第二傾斜面，亦可由膏料附著防止層所被 覆。若爲此構成，變得難以在第二傾斜面附著膏料，而可 減低膏料對第二傾斜面之滑動阻力。因此，可更爲順暢地 滑動引導膏料，可進一步提高滾動性。另外，於印刷結束 時能容易除去附著於第二傾斜面之膏料。 作爲膏料附著防止層，並無特別限定，例如，可舉出 實施比第二傾斜面原本之表面狀態能進一步改善脫模性之 處理而形成被覆層等。具體而言，以在第二傾斜面實施氟 樹脂等之塗布等爲較佳。或者，亦能實施減小第二傾斜面 原本之表面粗度而形成平滑面之處理。 又，較佳爲刀片之第一傾斜面未被覆膏料附著防止 層。其理由，除了由硬質橡膠等構成之刀片的表面原本便 是平滑面，一開始起就難以實施高密接性之塗布以外，還 201210836 有從維持印刷性之觀點來看必須使刀片之邊緣部分露出的 緣故。另外，因橡膠含有溶劑而變形。所以，塗層容易剝 離，從耐久性之觀點來看是不佳的緣故。再者，若頻繁地 交換經塗布處理之刀片的話，容易造成成本增加之點。 膏料附著防止層較佳爲遍及至逃逸凹部之表面，更爲 具體而言，較佳爲以從第二傾斜面連續開始遍及至逃逸凹 部之表面的態樣形成。若爲此構成，則留因對刮刀附加印 壓而刀片撓曲時，刀片與保持凹部之間變得難以產生間 隙。又，即使產生間隙而造成膏料進入，之後仍能輕易地 除去附著在保持凹部表面的膏料。 然後，作爲用於解決上述課題之其他手段（手段3)，係 一種膏料印刷裝置，其具備手段1或手段2所記載之刮刀。 因此，根據手段3記載之裝置，可提供一種膏料印刷裝置， 能在不損害到刀片之成本性及通用性下提高膏料之滾動 性，且可形成良好之印刷層。 又，作爲另一手段（手段4)，係一種配線基板之製造方 法，其特徵爲：藉由使用手段1或手段2所記載之刮刀印 刷膏料，於基板上形成導體部。因此，根據手段4記載之 製造方法，因爲具備上述之優秀的刮刀’可確實地提高膏 料印刷性，其結果能以高良率製造具有形狀整齊之良好導 體部的配線基板。 【實施方式】 [用於實施發明的形態] 以下，參照第1圖至第4圖詳細說明具備將本發明具 201210836 體化之一實施形態的刮刀之銲膏印刷裝置及使用該銲膏印 刷裝置之配線基板11的製造方法。 第1圖爲顯示在本實施形態中使用之銲膏印刷裝置2 1 的整體槪略圖。此銲膏印刷裝置2 1具備在已將配線基板 11定位之狀態下用以水平地保持配線基板11之作業台 23。於作業台23上面設有可收容作成矩形形狀之配線基板 11(例如，一邊之長度爲3〇〇mm以上的大型配線基板11)之 尺寸的保持凹部23a。於作業台23之下方位置配設有構成 作業台驅動手段之一部分的電動汽缸24。作業台23之下 面中央部，係由朝上方延伸之電動汽缸24的桿部所支撐》 此電動汽缸24係透過構成作業台驅動手段之一部分的馬 達驅動電路25a而電性連接於控制電腦25。因此，當從控 制電腦1 5輸出規定之控制信號時，透過馬達驅動電路2 5 a 來驅動電動汽缸24內之未圖示的馬達。其結果，電動汽缸 24之桿部伸縮，作業台23則伴隨此伸縮而朝第1圖之上 下方向（X軸方向）移動。其結果，可使保持於作業台23上 之配線基板1 1進行昇降。 此銲膏印刷裝置2 1係於作業台2 3之上方位置具備遮 罩26。遮罩26構成爲包含遮罩板26a及該支撐遮罩板26a 之板支撐框26b。 遮罩板26a係由不鏽鋼等之金屬板（厚度爲40μηι)所構 成’俯視時呈矩形形狀。於遮罩板2 6 a之中央部規則地形 成有複數個直徑爲140μιη左右的大致圓形的通孔26c。此 等通孔2 6 c係與位於配線基板1 1上之被印刷面1 4側的作 -10- 201210836 爲印刷部位之覆晶銲墊1 6(連接端子）對應而形成。又，配 線基板11之覆晶銲墊16係直徑約爲120μιη的大致圓形， 且成爲利用防銲阻劑1 8之開口部1 9露出的狀態（參照第2 圖）。於印刷時，遮罩板2 6 a係成爲可重疊配置在配線基板 11之被印刷面14上。更爲具體而言，遮罩板26a之下面（遮 罩26的內面），係於印刷時可與防銲阻劑1 8之表面大致密 接的狀態下進行配置。 板支撐框26b係比遮罩板26a更具剛性之矩形框狀之 金屬構件，支撐遮罩板26a之外周部。板支撐框26b係配 置於從作業台23之上面朝水平方向突出之位置上。 此銲膏印刷裝置2 1係於作業台2 3之上方位置進一步 具備刮刀22及刮刀驅動手段27。刮刀22，係支撐於刮刀 驅動手段2 7之下端面，並在整體呈前傾之狀態下配置。本 實施形態之刮刀驅動手段27，係用以使刮刀22朝第1圖 之上下方向（X軸方向）及第1圖的左右方向（Y軸方向）移動 之手段，其構成爲含有利用馬達之一對螺桿（省略圖示）。X 軸方向驅動用馬達及Y軸方向驅動用馬達，分別透過馬達 驅動電路2 5 c而與控制電腦2 5電性連接。因此，當從控制 電腦2 5輸出規定之控制信號時，透過馬達驅動電路2 5 c來 驅動各馬達。其結果，能使刮刀22於X軸方向及Y軸方 向動作。又，刮刀22係藉由朝X軸方向之動作，以規定之 壓力對遮罩板26a的上面進行壓抵。另外，刮刀22係藉由 朝Y軸方向之動作，進行銲膏P1之充塡印刷。又，於本實 施形態中，第1圖所示之遮罩板2 6 a的左端側爲刮刀2 2之 -11 - 201210836 移動起始端側，右端側爲刮刀2 2之移動終端側。 此膏印刷裝置21具備在上端面具有銷（pin)2 8a之遮罩 昇降器28。作爲離版手段之遮罩昇降器28,係成爲在利用 馬達之電動汽缸的桿部前端安裝銷28a之構成。此遮罩昇 降器28係配置於遮罩26之刮刀22的移動起始端側的下 方，銷28a之前端經常抵接於板支撐框26b的下面。該遮 罩昇降器2 8係透過作爲按壓手段驅動手段之馬達驅動電 路2 5 d而與控制電腦2 5電性連接。因此，當從控制電腦 25輸出規定之控制信號時，透過該馬達驅動電路25d來驅 動電動汽缸內之未圖示的馬達。其結果，銷28a朝垂直方 向突出，隨著銷28a之突出，成爲刮刀22之移動起始端側 的板支撐框26b(遮罩26的單側）被以規定速度朝第1圖之 上面方向（X軸方向）頂起。其結果，使得重疊配置於配線基 板1 1之被印刷面1 4上的遮罩2 6的單側，離開被印刷面 14約數mm之距離。 如第2圖所示，本實施形態之刮刀2 2，係被稱爲所謂 的平刮刀之類型者，具備保持器31及刀片41。此保持器 31係使2個金屬構件33,34重疊而構成，並具有在其前端 部（第1、2圖中爲下端部）開口之保持凹部32。保持凹部 3 2係沿刮刀寬度方向長長地延伸。金屬構件3 3，3 4係由例 如鋁或不鏽鋼等之剛性比硬質橡膠高的材料所構成。 本實施形態之刀片41係由硬質橡膠構成之平板狀的 彈性體.。刀片4 1係被保持於保持凹部3 2內，其下側之— 部分成爲從保持凹部32突出的刀片突出部42。又，刀片 -12- 突 整 斜 第 斜 斜 度 刷 形 以 的 Θ2 Θ 1 之 過 差 面 第 更 之 201210836 出部42之突出量，可因應印刷條件之設定而適宜地 〇 將刀片突出部42之行進方向43側的面定義爲第一 面4 5，將保持器4 1前端部之行進方向43側的面定義 二傾斜面3 5。在此保持器41，第一傾斜面45與第二 面3 5被連續配置。在設置了刮刀22之狀態下，第一 面4 5及第二傾斜面3 5，相對於被印刷面1 4均傾斜約 至85度左右。又，在使遮罩板26a重疊之狀態下，被 面14成爲與遮罩板26a平行的位置關係。然後，本實 態中’第二傾斜面3 5對被印刷面1 4之傾斜角度Θ2， 成爲比第一傾斜面4 5對被印刷面1 4之傾斜角度θ 1還 方式設定。更爲具體而言，第二傾斜面3 5之傾斜角 ，係以成爲比第一傾斜面45對被印刷面1 4之傾斜角 還小的方式（即Θ2<Θ1)設定。較佳爲傾斜角度Θ1、 大小的差異爲5度〜15度左右。這是因爲若傾斜角度 t 小’則無法充分獲得期待之效果，而反過來若傾斜角 過大，則恐有滾動性劣化之虞的緣故。 如第2圖所示，若比較從寬度方向觀察刮刀22時之 傾斜面4 5的長度及第二傾斜面3 5的長度，以第二傾 35成爲略長之方式形成。又，第一傾斜面45之長度 二傾斜面3 5的長度亦可爲相同程度。 在構成保持器31之金屬構件34中，比第二傾斜面 靠近基端側（第2圖中爲上側）的部位，形成有沿刮刀 寬度方向延伸的逃逸凹部36。另外，於構成保持器 壬田 傾 爲 傾 傾 45 印 施 係 小 度 度 Θ2 差 度 第 斜 及 35 22 3 1 -13- 201210836 之金屬構件3 4，藉由施以氟樹脂之塗布而形成膏料附著防 止層3 7。膏料附著防止層3 7不僅僅是被覆整個第二傾斜 面35，而且還遍及至逃逸凹部36之表面及保持凹部32的 表面32a之一部分並將它們被覆。 接著，說明使用此銲膏印刷裝置2 1而於配線基板1 1 形成覆晶用銲料凸塊1 3(導體部）的作業順序。 如第2圖所示，在進行印刷時，首先，將作爲被印刷 物之大型配線基板1 1保持於保持凹部23a。然後，使作業 台2 3上昇而使配線基板1 1之被印刷面1 4密接於遮罩板 26a。此時，遮罩26之內面與配線基板11之被印刷面14 成爲大致平行的位置關係。另外，遮罩26之各.通孔26c成 爲與防銲阻劑1 8之各開口部1 9對應的位置關係。又，此 時之遮罩昇降器28的銷28a仍處於潛入之狀態。 接著，驅動刮刀驅動手段2 7而使刮刀2 2向下移動， 以使刮刀2 2之刀片4 1的下端緣接觸於遮罩板2 6 a之移動 起始端側。接著，藉由未圖示之膏料供給手段，朝遮罩板 26a之上面且刮刀22的行進方向側（即、第2圖中爲右側） 的位置供給適量之銲膏Pl(Pb-Sn系銲料、Sn-Ag系銲料、 Sn-Ag-Cu系銲料、Sn-Zn系銲料等之公知的材料）。 然後，在適宜設定了移動速度及印壓之基礎上，使刮 刀22沿遮罩面方向及被印刷面14的面方向（具體而言，從 第2圖之左側朝向右側）移動。藉此，將銲膏P 1塡充於通 孔26c及開口部19內，形成相當於遮罩26之厚度的高度 之銲膏印刷層（參照第3圖）。此銲膏印刷層在以後將成爲 -14- 201210836 覆晶用婷料凸塊13。 接著，以規定之時序驅動遮罩昇降器24，以使銷28a 突出於上方’藉此，使遮罩26離版。於是，銲膏印刷層從 遮罩26之通孔26c中拔出。 針對經過了以上之銲膏印刷之配線基板1 1，接著在規 定條件下進行回流，以使銲膏印刷層熔融。其結果，製作 完成具有高度及形狀一致之覆晶用銲料凸塊13的配線基 板11(參照第4圖）。 根據本實施形態，可獲得以下之效果。 (1 )在本實施形態之銲膏印刷裝置2 1的情況，若在印 刷時使刮刀22移動，則銲膏P 1先沿第一傾斜面45滑動引 導，順暢地供予與第一傾斜面4 5連續配置之第二傾斜面 3 5側，再沿第二傾斜面3 5滑動引導。因爲第二傾斜面3 5 對於被印刷面1 4的傾斜角度Θ2，比第一傾斜面45對被印 刷面1 4傾斜角度θ 1小，所以，此時銲膏P 1之流動方向被 改變爲容易進行滾動的方向（參照第2圖中之箭頭）。換言 之，刮刀22之朝行進方向43的驅動力變得被轉換爲銲膏 P 1之轉動力。其結果，即使未像習知技術那樣特別於刀片 41設置逃逸凹部，仍可輕易地引起滾動，並且滾動啓動亦 變快。因此，變得可使用市面上販售之單純且具有對稱之 截面形狀的刀片41，能在不損害到刀片41之成本性及通 用性下提高銲膏P 1之滾動性，且可形成良好之銲膏印刷 層。另外，藉由使用具備此種優良結構之刮刀22的銲膏印 刷裝置2 1來形成銲膏印刷層，能以高良率製造具有形狀整 -15- 201210836 齊之良好導體部的配線基板11。 (2)於本實施形態中，因在保持器32中形成朝比第二 傾斜面3 5更靠近基端側處延伸之逃逸凹部3 6，所以，即 使被第二傾斜面3 5滑動引導之銲膏P 1欲朝第二傾斜面3 5 的更上方行進，仍因有逃逸凹部36之存在而阻止其移動。 結果可防止銲膏P 1附著於廣範圍之面積上。因此，可避免 使滾動性下降之原因的銲膏P1之滑動阻力增大的情況。 (3 )於本實施形態中，保持器3 1之第二傾斜面3 5被膏 料附著防止層3 7所被覆，所以，成爲難以在第二傾斜面 3 5附著銲膏p 1，可減低銲膏p 1對第二傾斜面3 5之滑動阻 力。故而，可更爲順暢地滑動引導銲膏P1，進一步提高滾 動性。另外，能於印刷結束時容易除去附著於第二傾斜面 3 5之銲膏P 1，提高維護性。 又，本發明之實施形態，亦可作以下之變更。 •於上述實施形態中，以銲膏P 1作爲藉由刮刀2 2進 行印刷之膏料，但並不限定於此。例如，除了銲料以外之 含導電性金屬的金屬膏料之外，亦能以本發明之刮刀2 2對 不問導電性如何而含數個粒子的膏料等進行印刷。另外， 膏料不只限定於配線基板11之製造時所使用者，亦可使用 於配線基板U以外之製品的製造時。 •於上述實施形態中，將本發明具體化爲具備所謂的 平刮刀之膏料印刷裝置2 1，但亦可具體化爲具備平刮刀以 外之類型的刮刀者。例如，第5圖所示之其他實施形態的 銲膏印刷裝置2 1 A具備所謂的劍形刮刀。本實施形態之刮. -16- 201210836 刀22A係構成爲包含保持器31A及刀片41A。尤其 刀片4 1 A，其前端形成爲錐狀，故而具有如所謂的 狀。另外，第6圖所示之其他實施形態的膏料印刷裝 具備所謂的方形刮刀。本實施形態之刮刀22B係構 含保持器31B及刀片41B。尤其是關於刀片41B， 矩形，因此具有類似方形棒之形狀。另外，在此 22A，22B中，亦將2個傾斜角度設定爲「Θ2<Θ1」的 故而，可使用單純且對稱之截面形狀的刀片41 Α，4 在不會損害到刀片4 1 Α，4 1 Β之成本性及通用性下提 Ρ 1之滾動性，且可形成良好之銲料印刷層。 •於上述實施形態中，在作爲被印刷物之配線 1的被印刷面1 4形成要形成導體部之銲膏印刷層， 部不限定於銲料凸塊1 3。例如，在將要成爲配線圖 膏印刷層印刷於被印刷面1 4時，亦可應用本發明。 發明之刮刀及膏料印刷裝置，不單是將配線基板1 1 印刷物’亦可將配線基板1 1以外的物品作爲被印甩 .於上述實施形態中，形成有被覆保持器31中 傾斜面35、逃逸凹部36的表面及保持凹部32之赛 的一部分的膏料附著防止層3 7，但亦可將其形成爲 持器31之整個外表面。另外’亦可取代此種膏料附 層3 7的設置，而改以如氟樹脂等之材料來形成保 身。 •於上述實施形態中，刀片突出部42之行進： 側的第一傾斜面4 5、保持器3 1，3 1 A, 3 1 Β前端部之行 是關於 劍之形 置21B 成爲包 截面爲 等刮刀 關係。 1B，能 高銲膏 基板1 但導體 案之銲 又，本 作爲被 j物。 之第二 i 面 3 2a 涵蓋保 著防止 持器本 &向43 進方向 -17- 201210836 4 3側的第二傾斜面3 5，均爲平面，但它們亦可不一定是平 面。例如，在第7圖所示之其他實施形態的膏料印刷裝置 21C的情況，構成刮刀22C之刀片41A的刀片突出部42 之行進方向4 3側的第二傾斜面3 5，成爲朝行進方向4 3之 相反側凹陷的凹曲面。同樣，保持器3 1前端部之行進方向 43側的第一傾斜面45，亦成爲朝行進方向43之相反側凹 陷的凹曲面。凹曲面之第一傾斜面45與凹曲面之第二傾斜 面35係連續地配置。於第7圖中，2個凹曲面係形成爲曲 率大致相等，但亦可以一方之曲率成爲比另一方的曲率大 的方式予以形成。將連結構成第二傾斜面3 5之前端的第二 前端部S2b、與構成第二傾斜面35之後端的第二後端部S2a 的面’定義爲第二假想平面S2。另外，將連結構成第一傾 斜面45之前端的第一前端部sib、與構成第一傾斜面45 之後端的第一後端部Sla的面，定義爲第一假想平面S1。 在此情況下，第二假想平面S 2之對被印刷面1 4的傾斜角 度Θ 2 ’係以成爲比第一假想平面s 1之對被印刷面1 4的傾 斜角度Θ1還小的方式設定。因此，根據此種結構，銲膏 P 1便可順暢地沿著2個凹曲面流動。因此可進一步提高銲 膏P 1之滾動性，可形成良好之印刷層。 又’在第8圖所示之其他實施形態的膏料印刷裝置2 ! D 中’構成刮刀22D之刀片41A中的刀片突出部42之行進 方向4 3側的第一傾斜面4 5，成爲朝行進方向4 3之相反側 凹陷的凹曲面。另一方面’保持器31前端部之行進方向 4 3側的第二傾斜面3 5，成爲沒有凹陷的平面。平面之第二 -18- 201210836 傾斜面3 5與凹曲面之第一傾斜面4 5，係連續地配置，並 且’以該傾斜角度Θ2成爲比該傾斜角度θ丨還小的方式設 定。 又，在第9圖所示之其他實施形態的膏料印刷裝置2 J E 中，構成刮刀22E之刀片41A中的刀片突出部42之行進 方向4 3側的第一傾斜面4 5，成爲沒有凹陷的平面。另一 方面’保持器3 1前端部之行進方向4 3側的第二傾斜面3 5， 則成爲朝行進方向43之相反側凹陷的凹曲面。凹曲面之第 一傾斜面3 5與平面之第一傾斜面4 5，係連續地配置，並 且’該傾斜角度Θ 2係以成爲比該傾斜角度0 1還小的方式 設定。 其次’列舉藉前述之實施形態所掌握的技術思想如下。 (1 )於手段4中’該膏料係銲膏’該導體部係將該銲膏 進行回流所獲得之銲料凸塊。 (2)於手段1至4之任一手段中’該第—傾斜面或第— 假想平面對該被印刷面的傾斜角度、及該第二傾斜面或第 二假想平面對於被印刷面的傾斜角度，係4 5度以上、8 5 度以下’它們的角度的差異爲5度以上、15度以下。 【圖式簡單說明】 第1圖爲顯不具備將本發明具體化之一實施形態的膏 料印刷用刮刀之膏料印刷裝置的槪略圖。 第2圖爲顯不貫施形態之膏料印刷用刮刀的槪略圖。 第3圖爲顯示在實施形態中印刷膏料後之基板的剖視 圖。 •19- 201210836 第4圖爲顯示在實施形態中經過回流而形成導體部之 基板（配線基板）的剖視圖。 第5圖爲顯示具備另一實施形態之膏料印刷用刮刀之 膏料印刷裝置的主要部分放大剖視圖。 第6圖爲顯示具備另一實施形態之膏料印刷用刮刀之 膏料印刷裝置的主要部分放大剖視圖。 第7圖爲顯示具備另一實施形態之膏料印刷用刮刀之 膏料印刷裝置的主要部分放大剖視圖。 第8圖爲顯示具備另—實施形態之膏料印刷用刮刀之 膏料印刷裝置的主要部分放大剖視圖。 第9圖爲顯示具備另—實施形態之膏料印刷用刮刀之 膏料印刷裝置的主要部分放大剖視圖。 第1 〇圖爲顯示具備習知之膏料印刷用刮刀之膏料印 刷裝置的主要部分放大剖視圖。 【主要元件符號說明】 11 配線基板 12 基板 13 導體部 14 被印刷面 2 1，2 1 A 〜2 1 E 銲膏（胥料）印刷裝置 22,22A 〜22E 膏料印刷用刮刀 3 1 保持器 32 保持凹部 3 5 第二傾斜面 -20- 201210836 3 6 逃 逸 凹 部 3 7 膏 料 附 著 防 止 層 4 1 刀 片 42 刀 片 突 出 部 43 刀 片 之 行 進 方 向 45 第 — 傾 斜 面[Technical Field] The present invention relates to a paste printing blade having a holder and a blade, a paste printing device using the same, and a method of manufacturing a wiring board. [Prior Art] Conventionally, as a method of bonding an electronic component or the like to a connector on a wiring board, a method of using a solder bump has been known. Usually, the solder bumps are formed by performing solder paste printing on a plurality of connection terminals formed on the printed surface of the wiring substrate, and then reflowing to melt the solder paste printed layer. The first drawing shows a conventional example of a solder paste printing apparatus 101 having a paste printing blade 104 having a holder i and a blade 103. The operation sequence of printing the solder paste P1 at the connection terminal 106 by the solder paste printing apparatus 1〇1 is as follows. In a state where the wiring board 107 is horizontally held on a workbench (not shown), the masks 105 are placed on the printed circuit board 110. Then, the blade 103 of the blade 104 is brought into contact with the mask 105 to supply the solder paste P1 on the traveling direction side thereof. In this state, the blade 104 is horizontally moved along the upper surface of the cover 105. Thus, the solder paste is filled in the via hole by the blade 103, and a solder paste layer is formed on the connection terminal 106. Further, when the mask 105 is removed from the plate and then reflowed, the solder paste layer can be melted to become a solder bump. However, in such a printing apparatus 101, when the solder paste is moved in a predetermined direction at the time of printing, the solder paste P1 becomes a long-side surface on the 02 side in the blade width direction ί * Concealer 1 Brush Ρ 1 rod 201210836 shape and rotate in a rolling manner (rolling). In this case, the result of improving the printability of the paste can easily form a good printed layer having a uniform shape. Further, if the start of the rolling is fast, it is not necessary to obtain a large stroke of the blade, so that it is possible to prevent the size of the apparatus from being increased, and it is advantageous to perform printing on a large wiring board. However, in the case of the printing apparatus 1 of the conventional example shown in Fig. 1, the paste P1 is likely to adhere to a wide area on the traveling direction side of the blade 104, so it cannot be said that the rolling property is necessarily good. According to the condition, the paste P1 does not rotate on the mask but moves directly. Therefore, the printability of the paste deteriorates, and the amount of charge of the solder paste changes, and as a result, it becomes difficult to form a good print layer having a uniform shape. Further, even if the paste p 1 is rotated, there is a case where the rolling start (r 01 π n g s t a r t) becomes slow. In view of the above, there has been proposed a solder paste printing apparatus which is provided with a escaping concave portion on the side surface of the leading end portion of the blade in the direction in which the blade is held by the retaining recess of the retainer to prevent the paste from being attached. On the side (for example, refer to Patent Document 1). [PRIOR ART DOCUMENT] [Patent Document 1] [Patent Document 1] Japanese Laid-Open Patent Publication No. 11-20128 [Draft of the Invention] [Problems to be Solved by the Invention] The scraper used in the conventional conventional printing apparatus is front and rear. In contrast, the blade used in the printing apparatus described in Patent Document 1 is configured such that only the 20122012 has an escape recess on one side, which is relatively complicated and has a structure. A member of an asymmetrical cross-sectional shape. Therefore, in the printing apparatus described in Patent Document 1, it is necessary to specially manufacture or purchase a special shaped blade, which causes cost and versatility in this respect. Further, in the case of abrasion or deterioration due to use, the conventional front blade and the rear surface can be reversed if it is a conventional conventional blade. However, the blade described in Patent Document 1 cannot be used in the front and back. This is also one of the reasons for the cost reduction. The present invention has been made in view of the above problems, and an object of the invention is to provide a doctor blade for paste printing and a paste printing device which can improve the rolling property of a paste without impairing the cost and versatility of the blade. Good print layer. Further, another object of the present invention is to provide a method of manufacturing a wiring board having a good shape and a good conductor portion at a high yield. [Means for Solving the Problem] As a means for solving the above-mentioned problems (means 1), there is provided a blade for paste printing, comprising: a holder having a holding concave portion at a distal end portion; and a blade of an elastic system. Holding the holding recessed portion, having a part of the blade projecting portion projecting from the holding recessed portion; printing the paste by moving the printed surface in a state where the paste is supplied toward the traveling direction side of the blade, the paste is printed The utility model is characterized in that the first inclined surface of the plane or concave curved surface on the traveling direction side of the blade protruding portion and the second inclined surface of the plane or concave curved surface on the traveling direction side of the front end portion of the retainer are continuously arranged; And the inclination angle of the 201210836 of the second imaginary plane connecting the second front end portion forming the front end of the second inclined surface with the second rear end portion forming the rear end of the second inclined surface with respect to the printed surface is Relative to the first imaginary plane connecting the first front end portion of the front end of the first inclined surface with the first rear end portion forming the rear end of the first inclined surface It is set in such a manner that the inclination angle of the printed surface is small. Further, 'another means (means 2) for solving the above problem is a blade for a paste printing, comprising: a holder having a holding recess at a front end portion; and a blade of an elastic system held by the blade The holding recessed portion has a part of the blade projecting portion that protrudes from the holding recessed portion; the paste is printed by moving the printed surface in a state where the paste is supplied toward the traveling direction side of the blade, and the paste printing blade is characterized a first inclined surface of the surface on the traveling direction side of the blade protruding portion and a second inclined surface of the surface on the traveling direction side of the holder front end portion are continuously disposed, and the second inclined surface faces the The inclined angle of the printed surface is set to be smaller than the inclination angle of the first inclined surface facing the printed surface. Therefore, in the inventions described in the first and second embodiments, when the blade is moved during printing, the paste is first slidably guided along the first inclined surface, and the paste is smoothly supplied to the second inclined surface which is continuously disposed with the first inclined surface. On the face side, slide along the second inclined surface to guide. Since the inclination angle of the second inclined surface facing the printed surface (or the second imaginary plane) is smaller than the inclination angle of the first inclined surface facing the printed surface (or the first imaginary plane), the flow of the paste at this time The direction is changed to a direction that is easy to scroll. In other words, the driving force of the blade becomes easily converted into the rotational force of the paste. As a result, it is not necessary to provide the escape recess particularly in the blade, and the rolling can be easily caused, and the rolling start is also fast. Therefore, the rolling property of the paste can be improved without impairing the cost and versatility of the blade, and a good printed layer can be formed. 201210836 may also form an escape recess extending in the width direction of the blade on the holder closer to the base end than the second inclined surface. According to this configuration, even if the paste guided by the second inclined surface is to be moved further toward the second inclined surface, the movement of the escape concave portion is prevented by the presence of the escape concave portion, and as a result, the paste is prevented from adhering to a wide area. . Therefore, it is possible to avoid an increase in the sliding resistance of the paste which causes the decrease in the rolling property. Here, the material for forming the retainer is not particularly limited, and may be arbitrarily selected. However, it is preferable to use a material (metal, ceramic, resin, or the like) having a rigidity higher than that of a blade made of an elastomer such as hard rubber. The reason for this is that a pressing force is applied to the blade at the time of printing, and it is necessary to reliably hold the blade without causing a positional deviation. The second inclined surface of the holder may also be covered by the paste adhesion preventing layer. According to this configuration, it becomes difficult to adhere the paste to the second inclined surface, and the sliding resistance of the paste to the second inclined surface can be reduced. Therefore, the guiding paste can be slid more smoothly, and the rolling property can be further improved. Further, the paste adhering to the second inclined surface can be easily removed at the end of printing. The paste adhesion preventing layer is not particularly limited, and for example, a coating layer or the like can be formed by performing a process of further improving the mold release property from the surface state of the second inclined surface. Specifically, it is preferred to apply a fluororesin or the like to the second inclined surface. Alternatively, it is also possible to carry out a process of reducing the surface roughness of the second inclined surface to form a smooth surface. Further, it is preferable that the first inclined surface of the blade is not covered by the paste adhesion preventing layer. The reason is that the surface of the blade made of hard rubber or the like is originally a smooth surface, and it is difficult to apply high-adhesive coating from the beginning, and 201210836 has to expose the edge portion of the blade from the viewpoint of maintaining printability. The reason. In addition, the rubber is deformed because it contains a solvent. Therefore, the coating is easily peeled off, which is not preferable from the viewpoint of durability. Furthermore, if the coated blade is frequently exchanged, it is likely to cause a cost increase. The paste adhesion preventing layer is preferably formed over the surface of the escape concave portion, and more specifically, preferably formed from the second inclined surface continuously to the surface of the escape concave portion. According to this configuration, when the blade is deflected by the additional printing of the blade, it is difficult to create a gap between the blade and the holding recess. Further, even if a gap is generated to cause the paste to enter, the paste adhering to the surface of the holding recess can be easily removed. Then, as another means (means 3) for solving the above problems, there is provided a paste printing apparatus comprising the doctor blade described in the means 1 or 2. Therefore, according to the apparatus described in the means 3, it is possible to provide a paste printing apparatus which can improve the rolling property of the paste without impairing the cost and versatility of the blade, and can form a good printed layer. Further, as another means (means 4), a method of manufacturing a wiring board is characterized in that a conductor portion is formed on a substrate by using a blade printing paste described in the means 1 or 2. Therefore, according to the manufacturing method described in the fourth aspect, the above-described excellent doctor blade can provide a satisfactory printability of the paste, and as a result, a wiring board having a good shape and a good conductor portion can be produced with high yield. [Embodiment] [Embodiment for Carrying Out the Invention] Hereinafter, a solder paste printing apparatus including a blade having an embodiment of the present invention having 201210836 and a solder paste printing apparatus using the same will be described in detail with reference to FIGS. 1 to 4 A method of manufacturing the wiring substrate 11. Fig. 1 is a schematic overall view showing a solder paste printing apparatus 2 1 used in the present embodiment. This solder paste printing apparatus 21 includes a work table 23 for horizontally holding the wiring substrate 11 in a state where the wiring substrate 11 has been positioned. A holding recess 23a sized to accommodate a rectangular wiring board 11 (for example, a large wiring board 11 having a length of 3 mm or more on one side) is provided on the upper surface of the work table 23. An electric cylinder 24 constituting one of the table driving means is disposed below the work table 23. The center portion of the lower surface of the work table 23 is supported by the rod portion of the electric cylinder 24 extending upward. This electric cylinder 24 is electrically connected to the control computer 25 via the motor drive circuit 25a constituting one of the table drive means. Therefore, when a predetermined control signal is output from the control computer 15, the motor (not shown) in the electric cylinder 24 is driven by the motor drive circuit 25a. As a result, the rod portion of the electric cylinder 24 expands and contracts, and the work table 23 moves in the up-down direction (X-axis direction) of the first drawing along with the expansion and contraction. As a result, the wiring board 1 1 held on the work table 23 can be moved up and down. The solder paste printing apparatus 2 1 is provided with a mask 26 at a position above the work table 23. The mask 26 is configured to include a mask plate 26a and a plate support frame 26b that supports the mask plate 26a. The mask plate 26a is made of a metal plate (having a thickness of 40 μm) such as stainless steel, and has a rectangular shape in plan view. A plurality of substantially circular through holes 26c having a diameter of about 140 μm are regularly formed in the central portion of the mask plate 62a. The through holes 2 6 c are formed so as to correspond to the flip chip pads 16 (connection terminals) of the printing portion on the side of the printed surface 14 on the wiring substrate 1 as -10-201210836. Further, the flip chip 16 of the wiring board 11 has a substantially circular shape with a diameter of about 120 μm, and is exposed in a state where the opening portion 19 of the solder resist 18 is exposed (see Fig. 2). At the time of printing, the mask plates 26 6a are placed on the printed surface 14 of the wiring substrate 11 so as to be superimposable. More specifically, the lower surface of the mask plate 26a (the inner surface of the mask 26) is disposed in a state in which it is substantially in close contact with the surface of the solder resist 18 during printing. The plate supporting frame 26b is a rectangular frame-shaped metal member which is more rigid than the mask plate 26a, and supports the outer peripheral portion of the mask plate 26a. The plate support frame 26b is disposed at a position protruding from the upper surface of the work table 23 in the horizontal direction. The solder paste printing apparatus 2 1 further includes a doctor blade 22 and a blade driving means 27 at a position above the work table 23. The scraper 22 is supported by the lower end surface of the scraper driving means 27, and is disposed in a state of being inclined forward as a whole. The blade driving means 27 of the present embodiment is a means for moving the blade 22 in the up-down direction (X-axis direction) of the first drawing and the left-right direction (Y-axis direction) of the first drawing, and is configured to include a motor. A pair of screws (not shown). The X-axis direction drive motor and the Y-axis direction drive motor are electrically connected to the control computer 25 via the motor drive circuit 2 5 c. Therefore, when a predetermined control signal is output from the control computer 25, the motors are driven through the motor drive circuit 2 5 c. As a result, the blade 22 can be operated in the X-axis direction and the Y-axis direction. Further, the blade 22 is pressed against the upper surface of the mask plate 26a by a predetermined pressure by the operation in the X-axis direction. Further, the doctor blade 22 performs the charging of the solder paste P1 by the operation in the Y-axis direction. Further, in the present embodiment, the left end side of the mask plate 26a shown in Fig. 1 is the movement start end side of the blade 2 2 - 201210836, and the right end side is the mobile terminal side of the blade 2 2 . This paste printing device 21 is provided with a mask lifter 28 having a pin 28a on the upper end surface. The mask lifter 28 as the release means has a configuration in which the pin 28a is attached to the tip end of the rod portion of the electric cylinder of the motor. The mask lifter 28 is disposed below the moving start end side of the blade 22 of the mask 26, and the front end of the pin 28a is often abutted under the board support frame 26b. The shutter lifter 28 is electrically connected to the control computer 25 via a motor drive circuit 25d as a pressing means driving means. Therefore, when a predetermined control signal is output from the control computer 25, a motor (not shown) in the electric cylinder is driven by the motor drive circuit 25d. As a result, the pin 28a protrudes in the vertical direction, and as the pin 28a protrudes, the plate support frame 26b (one side of the mask 26) on the moving start end side of the blade 22 is directed toward the upper side of the first figure at a predetermined speed ( X-axis direction) jack up. As a result, the one side of the mask 26 disposed on the printed surface 14 of the wiring substrate 1 is superposed on the one side of the printed surface 14 by a distance of several mm. As shown in Fig. 2, the scraper 22 of the present embodiment is a type called a so-called flat scraper, and includes a retainer 31 and a blade 41. This holder 31 is formed by overlapping two metal members 33, 34, and has a holding recess 32 that is opened at its front end portion (lower end portions in Figs. 1 and 2). The holding recess 3 2 extends long in the blade width direction. The metal members 3 3, 3 4 are made of a material such as aluminum or stainless steel which is higher in rigidity than hard rubber. The blade 41 of the present embodiment is a flat elastic body made of hard rubber. The blade 41 is held in the holding recess 32, and the lower portion thereof becomes the blade projection 42 that protrudes from the holding recess 32. Moreover, the protrusion amount of the -122 Θ 1 of the -12 2 Θ 1 of the blade -12- slanting slanting brush shape is the amount of protrusion of the output portion 42 of the 201210836, and the blade protrusion 42 can be appropriately slid according to the setting of the printing conditions. The surface on the side of the traveling direction 43 is defined as the first surface 45, and the surface on the side of the traveling direction 43 of the front end portion of the holder 41 defines the two inclined surfaces 35. In this holder 41, the first inclined surface 45 and the second surface 35 are continuously arranged. In the state in which the doctor blade 22 is provided, the first surface 45 and the second inclined surface 35 are inclined by about 85 degrees with respect to the printed surface 14 . Further, in a state where the mask plate 26a is overlapped, the surface 14 is in a positional relationship parallel to the mask plate 26a. Then, in the present embodiment, the inclination angle Θ2 of the second inclined surface 35 to the to-be-printed surface 14 is set to be larger than the inclination angle θ 1 of the first inclined surface 45 to the to-be-printed surface 14 . More specifically, the inclination angle of the second inclined surface 35 is set to be smaller than the inclination angle of the first inclined surface 45 to the printing surface 14 (i.e., Θ2 < Θ 1). Preferably, the inclination angle Θ1 and the difference in size are about 5 to 15 degrees. This is because if the inclination angle t is small, the desired effect cannot be sufficiently obtained, and conversely, if the inclination angle is too large, there is a fear that the rolling property is deteriorated. As shown in Fig. 2, when the length of the inclined surface 45 and the length of the second inclined surface 35 when the blade 22 is viewed from the width direction are compared, the second inclination 35 is formed to be slightly longer. Further, the length of the first inclined surface 45 may be the same as the length of the inclined surface 35. In the metal member 34 constituting the retainer 31, an escape recess 36 extending in the blade width direction is formed at a portion closer to the base end side (upper side in Fig. 2) than the second inclined surface. In addition, the metal member 3 4 which is formed by the fluororesin is formed by applying the fluororesin to the metal member 3 4 which is formed by the application of the fluororesin. Material adhesion preventing layer 37. The paste adhesion preventing layer 37 not only covers the entire second inclined surface 35, but also spreads over the surface of the escape recess 36 and a portion of the surface 32a of the recess 32 and covers them. Next, a procedure for forming a flip-chip solder bump 13 (conductor portion) on the wiring substrate 1 1 using the solder paste printing apparatus 2 1 will be described. As shown in Fig. 2, when printing is performed, first, the large-sized wiring substrate 11 as a printed matter is held in the holding recess 23a. Then, the stage 23 is raised, and the printed surface 14 of the wiring board 1 1 is brought into close contact with the mask 26a. At this time, the inner surface of the mask 26 and the printed surface 14 of the wiring substrate 11 are in a substantially parallel positional relationship. Further, each of the through holes 26c of the mask 26 has a positional relationship corresponding to each of the opening portions 19 of the solder resist 18. Also, at this time, the pin 28a of the mask lifter 28 is still in a state of sneak. Next, the blade driving means 27 is driven to move the blade 2 2 downward so that the lower end edge of the blade 4 1 of the blade 2 2 comes into contact with the moving start end side of the mask plate 62a. Then, an appropriate amount of solder paste P1 is supplied to the upper surface of the mask plate 26a and the traveling direction side of the blade 22 (that is, the right side in FIG. 2) by a paste supply means (not shown) (Pb-Sn system) A well-known material such as solder, Sn-Ag-based solder, Sn-Ag-Cu-based solder, or Sn-Zn-based solder). Then, the blade 22 is moved in the direction of the mask surface and the surface direction of the surface to be printed 14 (specifically, from the left side to the right side in Fig. 2), in accordance with the appropriate setting of the moving speed and the printing pressure. Thereby, the solder paste P1 is filled in the through hole 26c and the opening 19 to form a solder paste printed layer having a height corresponding to the thickness of the mask 26 (see Fig. 3). This solder paste printed layer will later become a -14-201210836 flip chip bump 13 . Next, the mask lifter 24 is driven at a predetermined timing so that the pin 28a protrudes upward. Thereby, the mask 26 is detached. Thus, the solder paste printed layer is pulled out from the through hole 26c of the mask 26. The wiring substrate 1 1 which has been subjected to the above solder paste printing is then reflowed under prescribed conditions to melt the solder paste printed layer. As a result, the wiring board 11 having the solder bumps 13 for the flip chip having the same height and shape is completed (see Fig. 4). According to this embodiment, the following effects can be obtained. (1) In the case of the solder paste printing apparatus 2 1 of the present embodiment, when the doctor blade 22 is moved during printing, the solder paste P1 is first slidably guided along the first inclined surface 45, and smoothly supplied to the first inclined surface. 4 5 The second inclined surface 3 5 side of the continuous arrangement is slidably guided along the second inclined surface 35 . Since the inclination angle Θ2 of the second inclined surface 35 to the to-be-printed surface 14 is smaller than the inclination angle θ1 of the first inclined surface 45 to the to-be-printed surface 14, the flow direction of the solder paste P1 is changed to The direction in which scrolling is easy (refer to the arrow in Fig. 2). In other words, the driving force of the blade 22 in the traveling direction 43 becomes converted into the rotational force of the solder paste P1. As a result, even if the escape recess is not particularly provided for the blade 41 as in the prior art, the scrolling can be easily caused, and the scroll start is also made faster. Therefore, it becomes possible to use the blade 41 which is commercially available and which has a simple symmetrical cross-sectional shape, and can improve the rolling property of the solder paste P1 without impairing the cost and versatility of the blade 41, and can be formed into a good one. Solder paste printed layer. Further, by forming the solder paste printing layer by using the solder paste printing device 21 having the blade 22 having such a superior structure, the wiring board 11 having a good conductor portion having a shape of -15 - 201210836 can be manufactured at a high yield. (2) In the present embodiment, since the escape recessed portion 3 6 extending toward the proximal end side from the second inclined surface 35 is formed in the retainer 32, even if it is slidably guided by the second inclined surface 35 The solder paste P 1 is intended to travel further above the second inclined surface 35, and is still prevented from moving due to the presence of the escape recess 36. As a result, the solder paste P 1 can be prevented from adhering to a wide area. Therefore, it is possible to avoid an increase in the sliding resistance of the solder paste P1 which causes a decrease in the rolling property. (3) In the present embodiment, the second inclined surface 35 of the retainer 31 is covered by the paste adhesion preventing layer 37, so that it is difficult to attach the solder paste p1 to the second inclined surface 35. The sliding resistance of the solder paste p 1 to the second inclined surface 35. Therefore, the solder paste P1 can be slid more smoothly, and the rolling property can be further improved. Further, it is possible to easily remove the solder paste P1 adhering to the second inclined surface 35 at the end of printing, thereby improving the maintainability. Further, the embodiment of the present invention may be modified as follows. In the above embodiment, the solder paste P1 is used as the paste for printing by the doctor blade 2 2, but the invention is not limited thereto. For example, in addition to a metal paste containing a conductive metal other than solder, it is also possible to print a paste containing a plurality of particles regardless of conductivity by the doctor blade 2 of the present invention. Further, the paste is not limited to the user at the time of manufacture of the wiring board 11, and may be used in the production of a product other than the wiring board U. In the above embodiment, the present invention is embodied as a paste printing device 2 having a so-called flat blade, but it may be embodied as a blade having a type other than a flat blade. For example, the solder paste printing apparatus 2 1 A of the other embodiment shown in Fig. 5 includes a so-called sword-shaped blade. The scraper of the present embodiment. -16 - 201210836 The blade 22A is configured to include a retainer 31A and a blade 41A. In particular, the blade 4 1 A has a tapered front end and thus has a so-called shape. Further, the paste printing device of the other embodiment shown in Fig. 6 is provided with a so-called square blade. The doctor blade 22B of the present embodiment includes a retainer 31B and a blade 41B. In particular, regarding the blade 41B, it has a rectangular shape and thus has a shape similar to a square bar. Further, in these 22A and 22B, since the two inclination angles are also set to "Θ2<Θ1", the blade 41 Α, 4 having a simple and symmetrical cross-sectional shape can be used without impairing the blade 4 1 Α, 4 1 The cost and versatility of the 下 1 is rolling, and a good solder print layer can be formed. In the above embodiment, the solder paste printed layer on which the conductor portion is to be formed is formed on the to-be-printed surface 14 of the wiring 1 to be printed, and the portion is not limited to the solder bumps 13. For example, the present invention can also be applied when a wiring pattern printing layer is to be printed on the to-be-printed surface 14. In the doctor blade and the paste printing device of the invention, not only the printed substrate 1 1 printed matter ' can be printed on the other than the printed circuit board 1 1 . In the above embodiment, the inclined surface 35 of the covered holder 31 is formed. The surface of the escape recess 36 and the paste adhesion preventing layer 3 7 which holds a part of the race of the recess 32 may be formed as the entire outer surface of the holder 31. Further, it is also possible to replace the arrangement of the paste layer 37, and to form a body with a material such as a fluororesin. In the above embodiment, the advancement of the blade projecting portion 42: the first inclined surface 45 on the side, the retainer 3 1, 3 1 A, 3 1 Β the front end portion is about the shape of the sword 21B. Wait for the scraper relationship. 1B, high solder paste substrate 1 but the conductor case welding, this is the object. The second i-plane 3 2a covers the second inclined surface 3 5 of the side that prevents the holder from being in the direction of the -17-201210836 4 3, and is flat, but they may not necessarily be flat. For example, in the case of the paste printing device 21C of the other embodiment shown in Fig. 7, the second inclined surface 35 of the blade projecting portion 42 of the blade 41A of the blade 22C in the traveling direction 43 side is formed in the traveling direction. A concave curved surface that is recessed on the opposite side of 4 3 . Similarly, the first inclined surface 45 on the side of the traveling direction 43 of the front end portion of the retainer 3 1 also has a concave curved surface which is recessed toward the opposite side of the traveling direction 43. The first inclined surface 45 of the concave curved surface and the second inclined surface 35 of the concave curved surface are continuously arranged. In Fig. 7, the two concave curved surfaces are formed such that the curvature is substantially equal, but the curvature of one of them may be formed to be larger than the curvature of the other. The second front end portion S2b constituting the front end of the second inclined surface 35 and the surface 'the second rear end portion S2a constituting the rear end of the second inclined surface 35 are defined as the second imaginary plane S2. Further, a surface connecting the first distal end portion sib constituting the front end of the first inclined surface 45 and the first rear end portion S11 constituting the rear end of the first inclined surface 45 is defined as the first virtual plane S1. In this case, the inclination angle Θ 2 ' of the pair of imaginary planes S 2 to be printed surface 14 is set such that the pair of imaginary planes s 1 is smaller than the inclination angle Θ1 of the printing surface 14 . Therefore, according to this configuration, the solder paste P 1 can smoothly flow along the two concave curved surfaces. Therefore, the rolling property of the solder paste P 1 can be further improved, and a good printed layer can be formed. Further, in the paste printing device 2!D of the other embodiment shown in Fig. 8, the first inclined surface 45 on the side of the traveling direction 43 of the blade projecting portion 42 of the blade 41A constituting the blade 22D becomes A concave curved surface that is recessed on the opposite side of the traveling direction 4 3 . On the other hand, the second inclined surface 35 on the side of the traveling direction of the front end portion of the holder 31 is a flat surface having no recess. The second plane -18-201210836 The inclined surface 35 and the first inclined surface 45 of the concave curved surface are continuously arranged, and the inclination angle Θ2 is set to be smaller than the inclination angle θ丨. Further, in the paste printing device 2JE of the other embodiment shown in Fig. 9, the first inclined surface 45 on the side of the traveling direction 43 of the blade projecting portion 42 of the blade 41A of the blade 22E is formed without the recess. The plane. On the other hand, the second inclined surface 35 on the side of the traveling direction 4 3 of the front end portion of the retainer 3 1 is a concave curved surface which is recessed toward the opposite side of the traveling direction 43. The first inclined surface 35 of the concave curved surface and the first inclined surface 45 of the plane are continuously arranged, and the inclination angle Θ 2 is set to be smaller than the inclination angle 0-1. Next, the technical ideas grasped by the above-described embodiments are as follows. (1) In the means 4, the paste-based solder paste is a solder bump obtained by reflowing the solder paste. (2) In any of means 1 to 4, the inclination angle of the first inclined surface or the imaginary plane to the printed surface, and the inclination of the second inclined surface or the second imaginary plane to the printed surface The angle is 45 degrees or more and 85 degrees or less 'the difference in their angles is 5 degrees or more and 15 degrees or less. [Brief Description of the Drawings] Fig. 1 is a schematic view showing a paste printing apparatus which does not include a blade for paste printing which is an embodiment of the present invention. Fig. 2 is a schematic view of a doctor blade for paste printing which is invisible. Fig. 3 is a cross-sectional view showing the substrate after printing the paste in the embodiment. 19-201210836 Fig. 4 is a cross-sectional view showing a substrate (wiring substrate) in which a conductor portion is formed by reflow in the embodiment. Fig. 5 is an enlarged cross-sectional view showing the main part of a paste printing apparatus including a paste printing blade according to another embodiment. Fig. 6 is an enlarged cross-sectional view showing the main part of a paste printing apparatus including a paste printing blade according to another embodiment. Fig. 7 is an enlarged cross-sectional view showing the main part of a paste printing apparatus including a paste printing blade according to another embodiment. Fig. 8 is an enlarged cross-sectional view showing the main part of a paste printing apparatus including a doctor blade for a paste printing according to another embodiment. Fig. 9 is an enlarged cross-sectional view showing the main part of a paste printing apparatus including a doctor blade for a paste printing according to another embodiment. Fig. 1 is an enlarged cross-sectional view showing the main part of a paste printing device having a conventional blade for applying a paste for printing. [Description of main components] 11 Wiring board 12 Substrate 13 Conductor 14 Printed surface 2 1,2 1 A to 2 1 E Solder paste (drilling) Printing device 22, 22A to 22E Paste for printing paste 3 1 Retainer 32 holding recess 3 5 second inclined surface -20- 201210836 3 6 escape recess 3 7 paste adhesion preventing layer 4 1 blade 42 blade projection 43 blade traveling direction 45 first - inclined surface
PI 銲膏（膏料） 51 Sib S 1 a 52 S2b S2a Θ 1 Θ2 第一假想平面 第一前端部 第一後端部 第二假想平面 第二前端部 第二後端部 (第一傾斜面或第一假想平面之)傾斜角度 (第二傾斜面或第二假想平面之)傾斜角度 -21 -PI solder paste (paste) 51 Sib S 1 a 52 S2b S2a Θ 1 Θ 2 first imaginary plane first front end first rear end second imaginary plane second front end second rear end (first inclined surface or The angle of inclination of the first imaginary plane (the second slanted surface or the second imaginary plane) is inclined at the angle - 21