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1. 发明申请

WO1989010841A1 DOT MATRIX PRINT HEAD ASSEMBLY 审中-公开
标题翻译： DOT MATRIX打印头组件
公开(公告)号：WO1989010841A1
公开(公告)日：1989-11-16
申请号：PCT/US1989001874
申请日：1989-05-02
申请人： DH TECHNOLOGY, INC.
发明人： DH TECHNOLOGY, INC. , KERSEY, Kevin, Thomas
IPC分类号： B41J03/12
CPC分类号： B41J2/275
摘要： A matrix print head including a housing (20) accommodating a plurality of longitudinally displaceable print wires (26) and a plurality of armatures (28) driveable by electromagnets (34, 36) to displace the print wires (26) forwardly from a non-print to a print position. The armatures (28) are pivotally supported on a pivot support (240) and are positioned between the associated electromagnets and a retaining flange. The armature members (28) are fixedly connected to the print wire members (26) to provide individual combination print wire and armature subassemblies operable in a non-ballistic mode to reduce the number of parts and facilitate repair or replacement. The wire (26) impacts the paper before the armature fully engages on the pole end surface (78) to create a rebound force.
摘要翻译：一种矩阵式打印头，包括容纳多个可纵向移动的打印线（26）的壳体（20）和可由电磁体（34,36）驱动的多个电枢（28），以使打印线（26）打印到打印位置。电枢（28）枢转地支撑在枢转支撑件（240）上并且位于相关联的电磁体和保持凸缘之间。电枢构件（28）固定地连接到打印线构件（26），以提供以非弹道模式操作的单独的组合打印线和衔铁子组件，以减少部件的数量并促进维修或更换。电线（26）在电枢完全接合在极端表面（78）之前撞击纸张以产生回弹力。

2. 发明申请

WO1985004370A1 HIGH-SPEED WIRE PRINT HEAD WITH WIRE PRINT POSITION SHIFT APPARATUS 审中-公开
标题翻译：高速打印头与电线打印位置移位装置
公开(公告)号：WO1985004370A1
公开(公告)日：1985-10-10
申请号：PCT/US1985000466
申请日：1985-03-19
申请人： DH TECHNOLOGY, INC.
发明人： DH TECHNOLOGY, INC. , HEBERT, Donald, G.
IPC分类号： B41J03/12
CPC分类号： B41J25/001 , B41J2/255 , B41J25/005
摘要： A matrix head wire print position shift apparatus which includes a plurality of longitudinally movable print wires (42) which are disposed in guides (56, 60, 64). One of the guides (64) supports the printing ends of the wires (62) and is transversely shiftable between a first print position and a second print position by a shiftable support (68). In the first print position the print wires are selectably operable to print characters defined by a first set of adjacent substantially tangential circularly shaped dots. In the second print position the wire print devices are selectably operable to enhance printing of the characters with a second set of overlapping dots which are offset by one-half dot space from the first set. The shifting device (70, 94, 110) is located within the print wire housing (10).

3. 发明申请

WO1997030412A1 METHOD AND APPARATUS FOR PERFORMING SPATIAL READ-MODIFY-WRITE OPERATIONS 审中-公开
标题翻译：用于执行空间阅读修改操作的方法和装置
公开(公告)号：WO1997030412A1
公开(公告)日：1997-08-21
申请号：PCT/US1997002273
申请日：1997-02-13
申请人： DH TECHNOLOGY, INC.
发明人： DH TECHNOLOGY, INC. , VON MUELLER, Clay , MOS, Robert, J.
IPC分类号： G06K07/016
CPC分类号： G06K7/0166
摘要： A method and apparatus for reading and writing data to a medium which moves at an uncontrolled velocity relative to a read/write apparatus with which the data is read and written. The read/write apparatus comprises one write head and two read heads. The first read head is spaced apart from the second read head by an odd integer multiple of one half of a bit cell. The two read heads read preexisting data from the medium and generate a write clock which is used to synchronise a write operation using the write head. Delay logic ensures that the write head is over that portion of the medium on which new data is to be written. By measuring the amount of time between detection of a transition at the first read head and detection of that transition at the second read head, the velocity of the medium with respect to the read/write apparatus is determined and the amount of time that must elapse between the reading of old data and the writing of new data which overwrites the old data is determined. A write clock decoder receives a pulse associated with each transition read by either the first or the second read head, and outputs a write clock synchronized to the velocity of the read/write apparatus with respect to the medium based upon these received pulses. By spacing the two read heads apart by an odd multiple of one half the bit cell, either the first or the second read head will always detect a transition at each half bit cell. Thus, the write clock will have a transition each half bit cell.
摘要翻译：一种用于读取和写入数据的方法和装置，该介质以相对于读/写数据读写的读/写设备的不受控制的速度移动。读/写装置包括一个写头和两个读头。第一读头与第二读头相隔一位位单元的一半的奇整数倍。两个读取头从介质读取预先存在的数据，并产生写时钟，用于使用写入头来同步写入操作。延迟逻辑确保写入头位于要写入新数据的介质的那部分上。通过测量在第一读取头处的转变检测和第二读取头之间的转换检测之间的时间量，确定介质相对于读/写设备的速度和必须经过的时间量在读取旧数据和写入重写旧数据的新数据之间确定。写时钟解码器接收与由第一或第二读取头读取的每个转换相关联的脉冲，并且基于这些接收的脉冲输出与读/写设备相对于介质的速度同步的写时钟。通过将两个读取头间隔开比特单元的一半的奇数倍，否则第一或第二读取头将总是检测每个半位单元处的转换。因此，写时钟将具有每半位单元的转换。

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