采用滚筒扫描的传真机用于接收气象传真图片,每张记录纸通常只能记录_幅图片。然而,滚筒扫描的传真机在收图过程中不易观察图片是否已经发送完毕。如果发送完毕,则要及时换纸和开机,进行下一张图的接收。有时由于对时间掌握不准确或判断错误,往往造成过早或过迟开机,使得接收图片不完整。有人试图用定时开机的方法解决这个问题,但是传真图的发送时间不够准确,传真信号也不稳定,因而常不可靠。 Fax machines with a roll-to-roll scanner are used to receive meteorological fax pictures, which usually record only _ images per sheet of paper. However, the roller-scanning fax machine is not easy to see during the drawing process whether the picture has been sent. If the transmission is completed, you have to change the paper and boot, the next picture of the receiver. Sometimes because of the inaccuracy or misjudgment of time, often result in premature or late boot, making the receiving picture is not complete. Someone trying to solve this problem with a regular boot, but the fax map is not sent accurately enough time, the fax signal is not stable, and therefore often unreliable.