544540 A7 _B7_ 五、發明説明（1 ) (請先閲讀背面之注意事項再填寫本頁) 本發明有關於一種用於輸送底片之元件。該元件可使 用於輸送及預置一底片以於一底片曝光裝置内曝光用以照 相平版印刷。此種底片曝光裝置可參考如EP-B1-0 449 1 8 0所述。 藉由根據本發明之元件，於一照相機内一底片被自一曝光 區輸送至下一曝光區。該底片包括矩形齒孔，以與配置於至少一 輸送捲筒上之齒狀輪緣或齒輪緣，即所謂刺蜎型輪的齒相嚙合， 且當該等輸送滾筒被旋轉時藉以輸送該底片。 習知使用刺蜎輪，其齒為均勻圓針，用以輸送一底片。這 些針與該底片之齒孔銜接且因此可以於輸送方向餵送該底片。當 驅動力以習用方式經由該等針被傳送於該底片上時，該底片材實 質上受到一集中點載荷。藉此，該底片之材質特性限制了其動力 傳送。此外，由於該等針接觸該底片於該底片輸送方向及與其垂 直的方向兩者之底片平面上，因此該底片有超定之定位。此外亦 須選定該等針之直徑，以致於當該等針被插入於該底片之齒孔及 自其移出時，其摩擦可儘可能的低。因此，該底片無法以高度精 確方式定位。 本發明之目的在於提供一種改良式用於輸送底片之元件， 藉此該底片可被更迅速地輸送且於曝光期間更精確地定位，且其 可以精簡成本方式製造之。 此目的係以申請專利範圍之特徵來達成。 於達到此目的，本發明由以下基本構想著手。 本發明係以一具新穎構形之輸送滾筒之扣鏈齒輪或刺蜎輪 為基礎用以輸送底片。取代均勻圓針，其設置二齒輪緣於一底片 -4_ 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公釐） 544540 A7 _B7______ 五、發明説明（2 ) (請先閱讀背面之注意事項再填寫本頁) 輸送滾筒上，其具有不同形狀與不同功能之齒係用於該二齒輪緣 内。-第一齒輪緣之齒以其輸送方向持住該底片於一固定位置， 且另一，第二齒輪緣之齒以一水平方向及垂直該輸送方向之方向 持住該底片於一固定位置。於其下部，該等齒，相似於該等齒 孑L，具有矩形截面。該第一齒輪緣之齒的尺寸係於該輸送方向上 其可精確地配置於該等齒孔内。如此表示一齒相對該輸送方向垂 直延伸之側部，與該齒孔相對該輸送方向垂直延伸之側部相接 觸。於與該輸送方向平行延伸之側部上，該等齒與該齒孔之側部 相間隔且因此不會以此方向導引該底片。 於另一，第二齒輪緣中，該等齒的尺寸係於該水平方向及 與該輸送方向垂直之方向上其可精確地配置於該等齒孔内。如此 表示該等齒平行於該輸送方向延伸之侧部，與該齒孔平行於該輸 送方向延伸之侧部相接觸。該等齒於與該輸送方向垂直延伸之側 部，與該等齒孔與該輸送方向垂直延伸之侧部相間隔，以致於不 會以該輸送方向導引該底片。 因此，根據本發明之元件，分別僅有其中一個別齒輪緣將 該底片定位於該輸送方向上，及於相對該輸送方向相垂直延伸之 水平方向上。相對地，於習用具有均勻圓針之裝置，於該輸送方 向及垂直其之方向係藉由二齒輪緣來達成。 本發明包括有以下優點： 藉由該等矩形之齒及齒孔，力量係經由接觸線傳送。相較 於一圓針，藉此更多的力可被傳送，其對底片之加速及減速具有 正面作用。因此，譬如，用以輸送底片自一曝光區至下一曝光區 所需的時間即可減少。由於該等齒孔僅有二侧部接觸，僅於此二 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公釐） M4540544540 A7 _B7_ V. Description of the invention (1) (Please read the precautions on the back before filling out this page) The present invention relates to a component for conveying negatives. The element can be used to transport and preset a negative for exposure in a negative exposure device for photolithography. Such a film exposure device can be referred to as described in EP-B1-0 449 1 80. With the element according to the invention, a film is transported from one exposure area to the next exposure area in a camera. The film includes a rectangular perforation to mesh with teeth of a toothed rim or a gear rim arranged on at least one conveying drum, that is, a tooth of a so-called thorn-type wheel, and convey the film when the conveying rollers are rotated. . It is known to use a thorn wheel with uniform round needles for conveying a negative. These needles engage the perforations of the film and can therefore feed the film in the transport direction. When the driving force is transmitted to the negative film via the needles in a conventional manner, the negative film material is substantially subjected to a concentrated point load. As a result, the material properties of the film limit its power transmission. In addition, since the needles contact the film on the film plane in both the film conveying direction and the direction perpendicular to the film, the film has an over-determined positioning. In addition, the diameter of the needles must be selected so that when the needles are inserted into and removed from the perforations of the backsheet, their friction can be as low as possible. Therefore, the film cannot be positioned in a highly accurate manner. An object of the present invention is to provide an improved element for conveying a negative film, whereby the negative film can be conveyed more quickly and more accurately positioned during exposure, and it can be manufactured in a simplified cost manner. This objective is achieved by the characteristics of the scope of patent application. To achieve this, the present invention starts with the following basic idea. The present invention is based on a sprocket gear or a ratchet wheel of a conveying roller with a novel configuration for conveying a negative film. Instead of uniform round needles, its settings are based on a negative film -4_ This paper size applies to China National Standard (CNS) A4 specifications (210X297 mm) 544540 A7 _B7______ 5. Description of the invention (2) (Please read the precautions on the back first (Fill in this page again) On the conveyor roller, tooth systems with different shapes and functions are used in the two gear flanges. -The teeth of the first gear edge hold the film in a fixed position in its conveying direction, and the other, the teeth of the second gear edge hold the film in a fixed position in a horizontal direction and a direction perpendicular to the conveying direction. In its lower part, the teeth, similar to the teeth 孑 L, have a rectangular cross section. The size of the teeth of the first gear rim is in the conveying direction, and it can be accurately arranged in the tooth holes. This means that a side portion of a tooth extending perpendicularly to the conveying direction is in contact with a side portion of the tooth hole extending perpendicularly to the conveying direction. On the side extending parallel to the conveying direction, the teeth are spaced from the side of the perforation and therefore the film is not guided in this direction. In another, the size of the teeth in the second gear flange is in the horizontal direction and in the direction perpendicular to the conveying direction, and it can be accurately arranged in the tooth holes. This means that the sides of the teeth extending parallel to the conveying direction are in contact with the sides of the tooth holes extending parallel to the conveying direction. The teeth are spaced from the side extending perpendicularly to the conveying direction, and the teeth are extended from the side extending perpendicularly to the conveying direction, so that the film is not guided in the conveying direction. Therefore, according to the element of the present invention, only one of the other gear edges respectively positions the negative film in the conveying direction and in a horizontal direction extending perpendicularly to the conveying direction. In contrast, in the conventional device with a uniform round needle, the direction of the conveyance and the direction perpendicular to it are achieved by two gear edges. The invention includes the following advantages: With the rectangular teeth and perforations, the force is transmitted through the contact line. Compared with a round needle, more force can be transmitted, which has a positive effect on the acceleration and deceleration of the negative. Therefore, for example, the time required to transport negatives from one exposure area to the next exposure area can be reduced. As these perforations have only two sides of contact, only these two paper sizes apply the Chinese National Standard (CNS) A4 (210X297 mm) M4540
、發明説明 側部需要精確製造，因此其製造成本可降低。此外，以此構形可 達】該等函更精確的尺寸。藉此由於該等齒相對於該等齒孔尺寸 機械备存度較小’因此該底片可被更精確定位且準確曝光，例 \、、、相平版印刷中之印相幕罩接近度或印相幕罩接觸成像可以 降低。 於以下，茲將本發明配合參考圖式詳細說明於後，其中： 第1圖係本發明之實施例之透視圖； 第2圖係第1圖之實施例之頂視圖 筒 其中未顯不導引滾 (請先閲讀背面之注意事項再填寫本頁) 弟3圖係弟2圖之局部a之放大圖； 第4圖係第2圖之局部β之放大圖； 第5圖係第3圖之局部Α之橫剖圖；及 第6圖係第4圖之局部β之橫剖圖。 第1圖顯示本發明之一實施例，其中二輸送滾筒2，其各包 2二齒輪緣3a及3b，以一方向C輸送一底片卜為避免於輸送 期間產生一垂直方向之上升，導引滾筒6係配置於該等齒輪緣上 方。然而，原則上，可瞭解到本發明可不設置導引滾筒且可僅有 一輸送滾筒2。 第2圖係在該等輸送滾筒2上之底片J的頂視圖，其中各 輪送滚筒2之各齒輪緣3a及3b每一齒接合於該底片！之其中一 ㈣孔5。為確保精確曝光，例如於照相平版印刷中，當輸送該底 片及當將其停止於一曝光區時，使該底片保持在於方向c(輪送 方向）及與該輸送方向垂直的方向D之精確定位係重要的。此 外，雖然需要高度精確定位，最好亦能以高速輸送及停止該底 -6- 一---------- _- 本紙張尺度適用中國國家標準（哪）A4規格⑵〇><297公幻 .訂— -¾. 五、發明説明（4 ) 片。 第3至6圖所示。 第3圖係第2圖局部a其中之一的放大圖，发顯干於一 孔5内該齒輪緣3a之14a。該齒4a以其全们填滿該齒: :::，且接觸該齒孔之側部-反之，於垂直議 =向c之-水平方向D，該齒4a與該纽之側部 離。因此該底片藉該齒輪緣3a於方向D上沒有定位。 第4圖係第2圖之局部B的放大圖，其中顯示於該底片】 m内之該齒輪緣3b之—齒4b的頂視圖。相對於第3圖所 不者，該齒4b以其全長完全填滿該齒孔於該水平方向D及與該 方向C垂直之方向。如此表示該齒仆之個別側部接觸該齒孔5 U5b。以此方式該底片1被於該方向D上固定或定位。於 该方向C上該齒4b之側部係與該齒孔5之側部^相隔距離 d’，且因此不會於此方向導引該底片。 該等齒4a及4b之上端4a”及4b，，分別具有圓錐形狀，因此 可利於§ 4輸运滾筒2移動底片1時被插人於該齒孔5内及自其 移除。 第5及6圖刀別係第3及4圖之齒4a及4b，沿剖線E, E，及 F，F’之橫剖圖。 從第5圖可證明該矩形下端4a，接觸該齒孔5之侧部％。該 上端4a”具有傾斜面且因此呈一圓錐形狀自該齒孔5凸伸。 於第4圖所示中，該齒4b之下端牝，並不接觸該齒孔之壁 部5a且相間隔一距離d，。該齒4b之上端扑，，具有傾斜面且因此 544540 A7 B7 五、發明説明（5 ) 呈一圓錐形狀自該齒孔5凸伸。 本發明之元件標號： (請先閲讀背面之注意事項再填寫本頁) 1.. .底片 2...輸送滾筒 3a，3b...齒輪緣 4a...齒 4a’，4b’...矩形下端 4a”，4b”···上端 5.··齒孔 5a，5b···側部 6.. .導引滾筒 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公釐）2. Description of the invention The side part needs to be manufactured accurately, so its manufacturing cost can be reduced. In addition, with this configuration, the letters can be more precisely sized. As a result, because the teeth have a relatively small mechanical reserve relative to the size of the perforations, the film can be more accurately positioned and accurately exposed, such as the closeness of the printing screen cover or printing in photolithography. Phase screen cover contact imaging can be reduced. In the following, the present invention is described in detail with reference to the drawings, wherein: FIG. 1 is a perspective view of an embodiment of the present invention; FIG. 2 is a top view of the embodiment of FIG. Rolling (please read the precautions on the back before filling this page) Figure 3 is an enlarged view of part a of Figure 2; Figure 4 is an enlarged view of part β of Figure 2; Figure 5 is Figure 3 A cross-sectional view of part A; and FIG. 6 is a cross-sectional view of part β of FIG. 4. Fig. 1 shows an embodiment of the present invention, in which two conveying rollers 2, each of which includes two gear edges 3a and 3b, convey one film in one direction C. In order to avoid a vertical rise during conveyance, guide The roller 6 is arranged above the gear edges. However, in principle, it is understood that the present invention may be provided without a guide roller and may have only one conveying roller 2. Fig. 2 is a top view of the negatives J on the conveying rollers 2, in which each tooth of each gear rim 3a and 3b of each of the rotating rollers 2 is engaged with the negative! One of them ㈣ 孔 5. To ensure accurate exposure, for example, in photolithography, when transporting the negative and stopping it in an exposure area, keep the negative in the direction c (carousel direction) and the direction D perpendicular to the transport direction. Positioning is important. In addition, although highly precise positioning is required, it is best to convey and stop the bottom at a high speed. 6 ----------- _- This paper size applies the Chinese national standard (Which) A4 specification⑵〇 & gt < 297 Ghost Fantasy. Order--¾. 5. Description of the Invention (4). Figures 3 to 6 show. FIG. 3 is an enlarged view of one of the parts a in FIG. 2, and it is shown that the gear rim 3 a is 14 a in the hole 5. The tooth 4a fills the tooth ::: with all of them, and touches the side of the tooth hole-conversely, in the vertical direction = toward c-the horizontal direction D, the tooth 4a is away from the side of the button. Therefore, the negative is not positioned in the direction D by the gear rim 3a. FIG. 4 is an enlarged view of part B of FIG. 2, in which the top view of the gear edge 3 b-the tooth 4 b shown in the negative] is shown. With respect to those in FIG. 3, the teeth 4b completely fill the teeth holes in the horizontal direction D and the direction perpendicular to the direction C with their entire length. This means that the individual side portions of the tooth servo are in contact with the tooth hole 5 U5b. In this way, the negative 1 is fixed or positioned in the direction D. The side portion of the tooth 4b in the direction C is separated from the side portion ^ of the tooth hole 5 by a distance d ', and therefore the film is not guided in this direction. The upper ends 4a "and 4b of the teeth 4a and 4b, respectively, have a conical shape, so that it can be facilitated to be inserted into and removed from the perforation 5 when the transport roller 2 moves the negative plate 1 of §4. The knife in Fig. 6 is a cross-sectional view of teeth 4a and 4b in Figs. 3 and 4 along the section lines E, E, and F, F '. From Fig. 5, it can be proved that the rectangular lower end 4a is in contact with the tooth hole 5. Side portion. The upper end 4a "has an inclined surface and thus protrudes from the perforation 5 in a conical shape. As shown in Fig. 4, the lower end of the tooth 4b is not in contact with the wall portion 5a of the tooth hole and is separated by a distance d. The teeth 4b are flapped at the upper end, and have an inclined surface and therefore 544540 A7 B7. 5. Description of the invention (5) A cone shape protrudes from the teeth hole 5. Component numbers of the present invention: (Please read the precautions on the back before filling out this page) 1.... Film 2 ... Conveying rollers 3a, 3b ... Gear rim 4a ... Teeth 4a ', 4b' .. .Rectangular lower end 4a ”, 4b” ··· Upper end 5. ·· Perforation 5a, 5b ···· Side part 6 .. Guide roller This paper size is applicable to China National Standard (CNS) A4 (210X297 mm)