公开(公告)号：US3834505A

公开(公告)日：1974-09-10

申请号：US31391972

申请日：1972-12-11

Applicant: IBM

Inventor： FOWLER R ,  PERKINS N ,  SENDELWECK M ,  HILL J ,  MC CORNACK R ,  YOSMALI K ,  WEST D ,  WILLIAMS T

IPC: B41J19/20 ,  B41J21/18 ,  B41J29/18 ,  G01D15/18

CPC classification number: B41J29/18 ,  B41J19/20 ,  B41J21/18

Abstract: An ink jet printing apparatus is described having facilities for printing information in character locations, (boxes) each character location comprising a plurality of vertical columns of drop locations, and a number of characters comprising a line of information. Structures and circuits are included for insuring correct location of information within the character boxes and also providing for one mode in which characters are printed continuously line-by-line and another mode in which characters are printed incrementally character-by-character. During incremental printing, as well as the first character in a line or group of characters, provision is made for re-bounding the printhead back into the box of the character just printed, that is, prior to the next character box to be printed to insure that when the printhead starts up again for the next character that all drop components for that character, including any located in the immediate vicinity of the character boundary, are properly placed during printing.

Abstract translation: 描述了一种喷墨打印设备，其具有用于在字符位置打印信息的设备（每个字符位置包括多个垂直列的丢弃位置）和包括一行信息的字符的数目（框）。 包括结构和电路，用于确保字符框内的信息的正确位置，并且还提供了一种模式，其中字符被逐行打印，而另一种模式则以字符逐渐打印字符。 在增量打印期间，以及一行或一组字符中的第一个字符，提供将打印头重新限定在刚刚打印的字符的框中，即在要打印的下一个字符框之前 确保当打印头再次启动时，为打印期间适当放置该字符的所有放置组件（包括位于字符边界附近的任何位置）的所有放置组件。

公开(公告)号：US3769631A

公开(公告)日：1973-10-30

申请号：US3769631D

申请日：1972-10-13

Applicant: IBM

Inventor： WEST D ,  WILLIAMS T ,  HILL J ,  NAYLOR H

IPC: B41J2/075 ,  B05B5/025 ,  B41J2/08 ,  G06K15/10 ,  G01D15/18

CPC classification number: B41J2/08

Abstract: The present case concerns various techniques for increasing the printing rate of an ink jet printing apparatus. As one example, drops not required for printing, that is, drop intervals, are skipped. This reduces the time required to form individual characters. Another technique modifies the normal generation of drops which is sequential in a column by column fashion and instead imposes non-sequential drop generation and deflection thereby reducing drop merging and splatter that otherwise might occur.

公开(公告)号：US3852768A

公开(公告)日：1974-12-03

申请号：US38929173

申请日：1973-08-17

Applicant: IBM

Inventor： WILLIAMS R ,  CARMICHAEL J ,  WEST D

IPC: G01P3/66 ,  B41J2/12 ,  B41J2/125 ,  G01R5/28 ,  G01R29/24 ,  G06K15/10 ,  H04N1/23 ,  G01D18/00

CPC classification number: G01R29/24 ,  B41J2/12 ,  G01R5/28

Abstract: Circuits are described involving a method of detecting charges on drops in an ink jet stream without contacting the stream. This permits a determination of proper synchronization and charging of the drops, the velocity of the ink stream, the extent of deflection of the drops, and whether or not the stream is in operation, or has stopped.

Abstract translation: 描述的电路涉及一种在不接触流的情况下检测喷墨流中的液滴上的电荷的方法。 这允许确定液滴的适当同步和充电，墨水流的速度，液滴的偏转程度以及流是否在运行中，或者已经停止。

公开(公告)号：US3787882A

公开(公告)日：1974-01-22

申请号：US3787882D

申请日：1972-09-25

Applicant: IBM

Inventor： WEST D ,  FILLMORE G ,  NAYLOR H

IPC: B05C11/10 ,  B05B15/04 ,  B41J2/12 ,  B41J2/125 ,  B41J2/175 ,  F04B43/04 ,  F04B49/06 ,  G01D15/18

CPC classification number: F04B43/04 ,  B41J2/125 ,  B41J2/17596 ,  F04B49/065

Abstract: An important factor in quality of printing with an ink jet printing apparatus is the velocity of the ink jet stream. The present case describes a number of servo systems for controlling velocity of the stream. This can be done indirectly by sensing pressure and/or temperature or directly by sensing velocity of the stream and controlling the pump frequency or pump drive currents.

Abstract translation: 使用喷墨打印设备的打印质量的重要因素是喷墨流的速度。 本案例描述了用于控制流速度的多个伺服系统。 这可以通过感测压力和/或温度或直接通过感测流的速度并控制泵频率或泵驱动电流来间接完成。

公开(公告)号：US3769630A

公开(公告)日：1973-10-30

申请号：US3769630D

申请日：1972-06-27

Applicant: IBM

Inventor： HILL J ,  WEST D

IPC: B41J2/115 ,  B41J2/12 ,  B41J2/185 ,  G06K15/10 ,  H04N1/23 ,  G01D18/00

CPC classification number: B41J2/115 ,  B41J2/185 ,  B41J2002/1853

Abstract: Individual ink droplets are formed at a nozzle, propelled toward a record medium, variably charged by a charge electrode, and deflected by deflection plates for printing of characters. Droplets not required for printing are directed to a first gutter. The charges on the droplets develop a current in the first gutter that is sensed in an electronic feedback loop for synchronization of drop formation with drop charging. An auxiliary gutter is positioned to receive drops during a checking interval when a relatively high charge is applied to the unused drops. The relatively high charge on the drops develops a much larger current in the auxiliary gutter that is easier to detect. If desired, synchronization can also be effected by using the auxiliary gutter.