公开(公告)号：EP0721827A1

公开(公告)日：1996-07-17

申请号：EP95309217.8

申请日：1995-12-19

申请人： MITA INDUSTRIAL CO. LTD.

发明人： Nakao, Masahiko, c/o Mita Ind. Co., Ltd. ,  Yoshiuchi, Katsuhiro, c/o Mita Ind. Co., Ltd. ,  Yamamoto, Keizo, c/o Mita Ind. Co., Ltd.

IPC分类号： B26D7/22 ,  B26D1/38 ,  G03G15/00 ,  B65H23/28

CPC分类号： G03G15/6523 ,  B26D1/385 ,  B26D7/22 ,  B65H23/28 ,  Y10T83/178 ,  Y10T83/4653 ,  Y10T83/4827 ,  Y10T83/4847

摘要： A roll sheet cutter mechanism for an image forming apparatus is provided which is adapted to cut a roll sheet 4 paid out of a feed reel 51 between a rotary blade 82 and a stationary blade 81. When the leading edge of the transported roll sheet 4 passes over the rotary blade 82 located at a guiding position, the rotary blade 82 guides the leading edge of the roll sheet 4 in a transportation direction. The rotary blade 82 returns to a cutting stand-by position before the tail edge portion of the roll sheet 4 passes over the rotary blade 82. Therefore, the occurrence of jam of the roll sheet due to the curling thereof can assuredly be prevented. Further, time loss can be eliminated because the rotary blade is adapted to return to the cutting stand-by position.

摘要翻译： 提供了一种用于图像形成装置的卷片切割机构，其适于切割从旋转刀片82和固定刀片81之间的馈送卷轴51支付的卷筒纸4.当传送的卷片4的前缘通过时 在位于引导位置的旋转刀片82上，旋转刀片82沿输送方向引导卷筒纸4的前缘。 旋转刀片82在卷片4的尾缘部分越过旋转刀片82之前返回到切割待机位置。因此，可以可靠地防止由于其卷曲而导致卷筒纸卷发的发生。 此外，由于旋转刀片适于返回到切割待机位置，所以可以消除时间损失。

公开(公告)号：EP0757295A1

公开(公告)日：1997-02-05

申请号：EP96305509.0

申请日：1996-07-26

申请人： MITA INDUSTRIAL CO. LTD.

发明人： Yoshiuchi, Katsuhiro, c/o Mita Ind. Co., Ltd. ,  Kageyama, Hiroshi, c/o Mita Ind. Co., Ltd.

IPC分类号： G03G15/00

CPC分类号： G03G15/652 ,  G03G2215/00459 ,  G03G2215/00468

摘要： An image forming apparatus which is adapted to transfer an image onto a roll sheet (4C) fed out of a roll body (4C1) which is transported through a transportation path (D3) to an image forming section (20, 22, 24). When a user opens a front door (1b) of the image forming apparatus and sets a new roll body (4C1) around a feed reel (53) thereof, the leading edge (4C2) of a roll sheet (4C) fed out of the roll body (4C1) is located at a predetermined position in the transportation path (D3). When the user closes the front door (1b) upon completion of replacement of the roll body (4C1), a safety switch (501) is switched off. In response thereto, the feed reel (53) is driven, and reciprocative transportation of the roll sheet (4C) is repeated a plurality of times, so that the roll sheet (4C) is moved back and forth with respect to the direction of transportation thereof. Thus, the attitude of the roll sheet (4C) is corrected, whereby the leading edge (4C2) of the roll sheet (4C) is aligned with a line perpendicular to the transportation direction.

摘要翻译： 一种图像形成装置，其适于将图像转印到从通过传送路径（D3）传送到图像形成部（20,22,24）的辊体（4C1）送出的卷纸（4C）上。 当使用者打开图像形成装置的前门（1b）并且在其馈送卷轴（53）周围设置新的卷筒体（4C1）时，从所述卷筒纸（4C）的前端（4C2） 辊体（4C1）位于输送路径（D3）的规定位置。 当用户在完成辊体（4C1）更换之后关闭前门（1b）时，安全开关（501）被关闭。 响应于此，进给辊（53）被驱动，辊片（4C）的往复运动重复多次，使得卷片（4C）相对于运送方向前后移动 它们。 因此，辊片（4C）的姿势被校正，从而辊片（4C）的前缘（4C2）与垂直于运送方向的线对齐。

公开(公告)号：EP0757300A2

公开(公告)日：1997-02-05

申请号：EP96305629.6

申请日：1996-07-31

申请人： MITA INDUSTRIAL CO. LTD.

发明人： Yoshiuchi, Katsuhiro, c/o Mita Ind. Co., Ltd. ,  Kageyama, Hiroshi, c/o Mita Ind. Co., Ltd. ,  Nishi, Yoko, c/o Mita Ind. Co., Ltd.

IPC分类号： G03G15/00

CPC分类号： G03G15/652 ,  G03G15/6523 ,  G03G2215/00455 ,  G03G2215/00468

摘要： An image forming apparatus capable of cutting a strip-shaped continuous sheet on which an image is formed to a desirable cutting length. A rolled-sheet (4) is conveyed by registration rollers (LL) and the like. The rolled-sheet (4) is further led to the vicinity of a photosensitive drum (20) through pre-transfer rollers (TL). The rolled-sheet (4) to which a toner image has been transferred is subjected to toner fixing processing by a fixing device (35). When the leading end of the rolled-sheet (4) reaches the pre-transfer rollers (TL), the rotational speed of a sheet feeding motor (PFM) is increased during predetermined time. Consequently, the sheet conveying speed on the upstream side of the pre-transfer rollers (TL) in a direction of sheet conveyance is increased, thereby forming slack in a sheet portion between the registration rollers (LL) and the pre-transfer rollers (TL). Consequently, tension exerted on a sheet portion between the fixing device (35) and the pre-transfer rollers (TL) does not affect the conveyance of the sheet by the registration rollers (LL). If operation timing of a cutting mechanism (80) is determined on the basis of the number of output pulses of a pulse output unit (PW) for detecting rotation of the sheet feeding motor (PFM), therefore, the rolled-sheet (4) can be reliably cut to a desirable length.

摘要翻译： 一种图像形成设备，能够将其上形成有图像的条形连续片材切割成期望的切割长度。 卷筒纸（4）由定位辊（LL）等输送。 卷筒纸（4）通过预输送辊（TL）进一步被引导到感光鼓（20）的附近。 转印有调色剂图像的压延片（4）通过定影装置（35）进行调色剂定影处理。 当卷筒纸（4）的前端到达预输送辊（TL）时，在预定时间内增加送纸马达（PFM）的转速。 因此，在输送方向上的预输送辊（TL）的上游侧的片材输送速度增加，由此在对齐辊（LL）和预输送辊（TL）之间的片材部分中形成松弛 ）。 因此，施加在定影装置（35）和预输送辊（TL）之间的片材部分上的张力不会影响定位辊（LL）输送片材。 如果基于用于检测片材进给马达（PFM）的旋转的脉冲输出单元（PW）的输出脉冲的数量来确定切割机构（80）的操作时机，则卷状片材（4） 可以可靠地切割成所需的长度。

公开(公告)号：EP0757299A1

公开(公告)日：1997-02-05

申请号：EP96305628.8

申请日：1996-07-31

申请人： MITA INDUSTRIAL CO. LTD.

发明人： Yoshiuchi, Katsuhiro, c/o Mita Ind. Co., Ltd. ,  Kageyama, Hiroshi, c/o Mita Ind. Co., Ltd. ,  Nishi, Yoko, c/o Mita Ind. Co., Ltd.

IPC分类号： G03G15/00

CPC分类号： G03G15/652 ,  B65H26/02 ,  B65H2301/41524 ,  B65H2511/51 ,  B65H2511/526 ,  B65H2513/40 ,  G03G15/6517 ,  G03G2215/00455 ,  G03G2215/00464 ,  B65H2220/01 ,  B65H2220/03 ,  B65H2220/11

摘要： An image forming apparatus having a structure in which it is judged whether or not the trailing end of a continuous sheet is fixed to a feeding reel (51, 52, 53). The continuous sheet wound around the feeding reel (51, 52, 53) is pulled out, and is conveyed through a conveying path passing through an image forming section. When the continuous sheet is conveyed, the rotation or the stop of the feeding reel (51, 52, 53) is detected. When the stop of the rotation of the feeding reel (51, 52, 53) is detected while the continuous sheet is being conveyed, it is judged that the continuous sheet has been used up. The continuous sheet is further conveyed for a predetermined time period after the judgment. It is judged whether or not the trailing end of the continuous sheet is fixed to the feeding reel (51, 52, 53) depending on whether or not the continuous sheet exists in a predetermined position of the conveying path.

摘要翻译： 一种图像形成装置，其具有判断连续片材的后端是否固定在供给卷轴（51,52,53）上的结构。 缠绕在供给卷轴（51,52,53）上的连续片被拉出，并通过穿过图像形成部的传送路径传送。 当传送连续片材时，检测供给卷轴（51,52,53）的旋转或停止。 当在连续片材传送过程中检测到供给卷轴（51,52,53）的旋转停止时，判断连续片材已经用完。 在判断之后，连续片材被进一步传送预定时间段。 根据连续片材是否存在于传送路径的预定位置来判断连续片材的尾端是否固定到供给卷轴（51,52,53）。