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公开(公告)号：US4712113A
公开(公告)日：1987-12-08
申请号：US886488
申请日：1986-07-17
摘要： A thermal printing apparatus is disclosed in which ribbon advancing mechanism including a supply spool and a take-up spool operated by a stepping motor is disclosed. Mechanism is provided for reversing the direction in which the take-up spool is driven by a specified amount during the printing cycle, in order to provide ribbon slack, so as to avoid smudging of the transferred ink on the receiving document and possible ribbon breakage during printing. The circumference of the accumulated ribbon on the take-up spool at any given time is considered in determining the number of steps and the step rate of the stepping motor in the reverse direction which must be taken in order to produce the desired amount of ribbon slack and slack take-up.
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公开(公告)号：US4815726A
公开(公告)日：1989-03-28
申请号：US137636
申请日：1987-12-24
CPC分类号： B65H5/062 , G06K13/04 , G06K13/07 , B65H2301/321 , B65H2601/11
摘要： A document transport apparatus which also provides for the quick release of a jammed document to facilitate its removal from the associated document track. First and second pinch rollers are mounted on a planar member which is moved, resiliently, into engagement with their associated first and second drive rollers. Slotted mounting members are used to mount the opposed ends of the planar member to one upstanding wall of the document track and to enable the planar member to move in a plane which is parallel to the document feeding direction. An operating lever is used to move the planar members with the pinch rollers thereon between engaged and disengaged positions with regard to associated drive rollers.
摘要翻译： 一种文件传送装置，其还提供用于快速释放卡住的文件以促进其从相关联的文档轨道移除。 第一和第二夹送辊安装在平面构件上，弹性地与其相关联的第一和第二驱动辊接合。 开槽的安装构件用于将平面构件的相对端安装到原稿轨道的一个直立的壁上，并使平面构件能够在平行于原稿输送方向的平面内移动。 操作杆用于使平面构件与其上的压紧辊相对于相关的驱动辊在接合位置和脱离位置之间移动。
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公开(公告)号：US5192069A
公开(公告)日：1993-03-09
申请号：US846091
申请日：1992-03-05
IPC分类号： B65H3/04
CPC分类号： B65H3/042 , B65H2402/60
摘要： An apparatus for feeding documents from a stack of documents, in single file, into a document track, with the apparatus employing an endless belt. The endless belt is mounted on a drive roller and an idler roller to provide a linear portion of the belt which is parallel to the first document to be fed from the stack. The apparatus also includes a retard mechanism which includes a first portion to engage the documents in the stack and also includes a second portion which is parallel to the linear portion of the endless belt and is biased towards the linear portion by a tension spring. The endless belt is made of a material which is designed to wear instead of "glazing" which provides for a positive feed. The endless belt and the retard member are designed to be replaced by an operator of the terminal in which the apparatus is located so as to avoid a service call by a maintenance person.
摘要翻译： 一种装置，用于将单个文件中的文件堆叠文件馈送到文档轨道中，该装置采用环形带。 环形带安装在驱动辊和惰轮上，以提供平行于要从堆叠供给的第一原稿的带的直线部分。 该装置还包括延迟机构，该延迟机构包括第一部分，用于接合堆叠中的文件，并且还包括与环形带的线性部分平行的第二部分，并且通过拉伸弹簧朝着线性部分偏压。 环形皮带由设计为穿着而不是“玻璃”而设计的材料制成，其提供了正的进给。 环形带和延迟构件被设计成由设备所在的终端的操作者代替，以避免维护人员的服务呼叫。
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4.发明授权
公开(公告)号：US5199698A
公开(公告)日：1993-04-06
申请号：US846119
申请日：1992-03-05
摘要： An apparatus for feeding documents from a stack of documents, in single file, into a document track, with the apparatus employing an endless belt. The endless belt is mounted on a drive roller and an idler roller to provide a linear portion of the belt which is parallel to the first document to be fed from the stack. The apparatus also includes a retard mechanism which includes a first portion to engage the documents in the stack and also includes a second portion which is parallel to the linear portion of the endless belt and is biased towards the linear portion by a tension spring. The endless belt is made of a material which is designed to wear instead of "glazing" which provides for a positive feed. The endless belt and the retard member are designed to be replaced by an operator of the terminal in which the apparatus is located so as to avoid a service call by a maintenance person. The apparatus also includes a velocity sensor to detect the speed at which a pusher in the apparatus is moving the stack of documents towards the linear portion of the endless belt. If too fast, a motor driving the endless belt is disabled until a time has elapsed to permit stabilization of pressure on the first document to be picked from the stack.
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