专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5206662A Method and apparatus for adjusting contact pressure of a thermal printhead 失效
标题翻译：用于调节热敏接头的接触压力的方法和装置
公开(公告)号：US5206662A
公开(公告)日：1993-04-27
申请号：US683459
申请日：1991-04-08
申请人： Duane M. Fox , Edward D. Caldwell , William P. Stiles
发明人： Duane M. Fox , Edward D. Caldwell , William P. Stiles
IPC分类号： B41J25/312
CPC分类号： B41J25/312
摘要： A method and apparatus for adjusting the contact pressure of a thermal printhead against a platen roller. In response to the receipt of a control signal, a spring mechanism is activated to apply a torque against an arm attached to a shaft. Rotation of the shaft first brings the printhead into contact with a thermal medium which passes between the printhead and the platen roller. After the printhead contacts the thermal medium, further force applied through the spring selectively increases the torque which, in turn, increases the pressure of the printhead against the thermal medium. The pressure is adjustable as a function of the thermal medium, print speed, user darkness preference and other variables.
摘要翻译：一种用于调节热打印头对压纸辊的接触压力的方法和装置。响应于接收到控制信号，弹簧机构被激活以对连接到轴的臂施加扭矩。轴的旋转首先使打印头与在打印头和压纸辊之间通过的热介质接触。在打印头接触热介质之后，通过弹簧施加的进一步的力选择性地增加了扭矩，这又提高了打印头对热介质的压力。压力可根据热介质，打印速度，用户黑暗偏好以及其他变量进行调节。

2. 发明授权

US4842439A Label supply collet-clamp fitting 失效
标题翻译：标签供应夹头夹具
公开(公告)号：US4842439A
公开(公告)日：1989-06-27
申请号：US063168
申请日：1987-06-17
申请人： Edward D. Caldwell , Pamela M. Koury
发明人： Edward D. Caldwell , Pamela M. Koury
IPC分类号： B65H16/04
CPC分类号： B65H16/04 , Y10T403/535 , Y10T403/7007
摘要： A collet-clamp for retaining label supply rolls on a dispensing shaft. The collet has a plurality of fingers that can be tightened against the shaft when the clamp is moved axially toward the collet. The base of the collet supports a plurality of helical wedging surfaces that cooperate with annular segments formed on the axial hub of the clamp in order to cause the clamp to be brought closer to the collet when the clamp is twisted in a predetermined clamping direction with respect to the collet. The collet and clamp are assembled by bringing the annular segments of the clamp into cooperative engagement with the helical wedging surfaces of the collet by twisting the clamp with respect to the collet in the direction opposite the clamping direction prior to placing the collet-clamp fitting onto the shaft. While on the shaft the collet-clamp fitting cannot be disassembled.
摘要翻译：用于在分配轴上保持标签供应辊的夹头夹。夹头具有多个指状物，当夹具沿轴向移动到夹头时，该指状物可以紧靠轴部紧固。夹头的底部支撑多个螺旋楔形表面，其与形成在夹具的轴向毂上的环形部分配合，以便当夹具以预定的夹紧方向扭转时使夹具更靠近夹头，相对于到夹头通过使夹具的环形部分与夹具的螺旋楔形表面协调地接合，使夹具相对于夹头相对夹紧方向相反的方向相对于夹紧方向扭转，在将夹头夹具安装到轴。在轴上，夹头夹具不能拆卸。

3. 发明授权

US4788558A Method and apparatus for controlling tension in tape progressed along a feed path 失效
标题翻译：用于控制带中的张力的方法和装置沿着进给路径进行
公开(公告)号：US4788558A
公开(公告)日：1988-11-29
申请号：US12209
申请日：1987-02-06
申请人： Edward D. Caldwell , David A. Ballard
发明人： Edward D. Caldwell , David A. Ballard
IPC分类号： B41J15/04 , B41J33/14 , B41J33/34 , B65H23/00 , B65H23/18 , G01D15/00
CPC分类号： B41J33/34 , B65H23/005 , B65H23/1806
摘要： A method and apparatus for controlling the tension in a tape (16, 18) along a feed path between a reel (84, 112) and a processing station (20) is disclosed. A motor (146, 162) having a controllable torque is coupled to the reel. An advancement mechanism (22, 142) advances the tape through the processing station. Sensors (190, 192) produce signals proportional to the advancement of the tape through the processing station as well as the advance of the reel. These signals are compared to produce an indicia of the present operating radius of the tape on the reel, which is dependent upon the amount of tape wound upon the reel. With this indicia determined, empirically derived data can be consulted to determined the energization of the motor necessary to produce a torque that will compensate for the changing tape diameter on the reel, maintaining the tension in the tape substantially constant independent of the transfer of tape with respect to the reel. In a preferred embodiment, this arrangement is employed to control the tension in thermal transfer ribbon (16) and receiving paper (18) between a print roller (22) and their respective reels (146, 162) in a thermal transfer printer (10).
摘要翻译：公开了一种用于控制沿着卷轴（84,112）和处理站（20）之间的进给路径的带（16,18）中的张力的方法和装置。具有可控扭矩的电动机（146,162）联接到卷轴。前进机构（22,142）使带子前进通过处理站。传感器（190,192）产生与通过处理站的带的前进成比例的信号以及卷轴的前进。将这些信号进行比较以产生卷轴上的带的当前操作半径的标记，这取决于卷绕在卷轴上的带的量。在确定了该标记的情况下，可以查阅经验导出的数据，以确定产生扭矩的马达的通电，该扭矩将补偿卷轴上的更换带直径，从而保持带中的张力基本上恒定，而与带的传送无关，相对于卷轴。在优选实施例中，这种布置用于控制热转印打印机（10）中的热转印带（16）和接收纸（18）之间的张力在打印辊（22）和它们各自的卷轴（146,162）之间，。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式