公开(公告)号：WO1981002465A1

公开(公告)日：1981-09-03

申请号：PCT/US1981000193

申请日：1981-02-11

Applicant: NCR CORP

Inventor： NCR CORP ,  THOMAS J ,  ITALIANO V

IPC: G01D15/16

CPC classification number: B41J2/175 ,  G01D15/18 ,  Y10T137/0753

Abstract: Ink jet printer (10) having a rotatable ink reservoir (12) for supplying ink to a print head (52) through a capillary ink supply line (48), which print head (52) is movable in rotary direction and is adapted to eject ink droplets on to a record medium (72) as the head (52) is moved past the record medium (72). The ink reservoir (12) has two cavities (28, 30), one of which (30) is connected to the print head (52) by the ink supply line (48). Valve means (36, 40, 42) are provided between the cavities (28, 30) to control the flow of ink therebetween such that ink is free to flow between the cavities (28, 30) when the ink reservoir (12) is at rest, but is prevented from flowing, due to centrifugal force, upon rotation of the ink reservoir (12). By virtue of this arrangement a major proportion of the total ink in the reservoir (12) is isolated from the ink supply line (48) during rotation of the reservoir (12), whereby a sufficient negative head is maintained at said print head (52) for proper operation of the printer (10).

Abstract translation: 喷墨打印机（10）具有可旋转墨水储存器（12），用于通过毛细管墨水供应管线（48）将墨水供应到打印头（52），该打印头（52）可在旋转方向上移动并适于弹出 当头部（52）移动通过记录介质（72）时，墨滴在记录介质（72）上。 墨水储存器（12）具有两个空腔（28,30），其中一个（30）通过供墨管线（48）连接到打印头（52）。 阀门装置（36,40,42）设置在空腔（28,30）之间以控制其间的墨水流动，使得当墨水储存器（12）处于位置时，墨水在空腔（28,30）之间自由流动 但是当油墨贮存器（12）旋转时，由于离心力而被阻止流动。 由于这种布置，储存器（12）中的总墨水的主要部分在储存器（12）的旋转期间与供墨管线（48）隔离，从而在所述打印头（52）处保持足够的负头 ）以适当地操作打印机（10）。

公开(公告)号：WO1981000476A1

公开(公告)日：1981-02-19

申请号：PCT/US1980000939

申请日：1980-07-18

Applicant: NCR CORP

Inventor： NCR CORP ,  THOMAS J

IPC: G06K07/14

CPC classification number: G06K19/06037

Abstract: A machine readable code (10) in the form of a matrix array of dots arranged in rows and columns represents characters by respective columns of m dots. Each column contains a repeated n-bit pattern and is such that no block of n consecutive bit positions occurs in the column representing any other character, all the blocks of n consecutive bit positions within a given column being related by cyclic permutation. The code reader (16) Spans more than n bit positions but less than a full column.

Abstract translation: 以行和列排列的矩阵阵列阵列形式的机器可读代码（10）代表由m个点的相应列表示的字符。 每列包含重复的n位模式，并且使得在表示任何其他字符的列中不存在n个连续位位置的块，给定列中的n个连续位位置的所有块通过循环置换相关。 代码阅读器（16）跨越n位，但小于全列。