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公开(公告)号：EP0072110A3
公开(公告)日：1984-05-02
申请号：EP82303776
申请日：1982-07-19
IPC分类号： B41J03/04
摘要： The ink jet dot printer comprises a head mounted on a carriage 10 movable along a platen supporting the paper and is formed by a plurality of tubes 24 and piezoelectric transducers 36 for ejecting the ink, which are supported by two parallel plates spaced from one another, between which a polymerizable resin is cast to form a single block. The tubes are aligned in a single row F-F' in a direction inclined with respect to the printing line, in such manner that the distance between the extreme tubes measured perpendicularly to the printing line is equal to the maximum height of the characters. On the outside of the front plate supporting the tubes 24 there is fixed a thin plate S1 bearing a row of nozzles U o- U 19 , each of which is aligned with the corresponding ejector tube 24. The expulsion of the drops of ink is obtained by means of the compression exerted on the tubes 24 by the piezoelectric transducers 36 activated in parallel by electric pulses generated by an energizing circuit under the control of a driving logic circuit by means of which it is possible to vary the slope of the printed characters and obtain bidirectional printing at high speed.
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公开(公告)号：EP0185652A2
公开(公告)日：1986-06-25
申请号：EP86200146.8
申请日：1982-07-19
IPC分类号： B41J3/04
摘要： The head comprises a tube (24) for ejecting ink through a nozzle (54), when a transducer (36) is operated. The tube (24) is connected to an ink reservoir (31) by a flexible tube (30), which is longer than the distance between the tube (24) and the reservoir (31). The tube (30) is wound on a drum (130) in an arrangement which optimises the utilisation of space by the tube (30).
When the head comprises more than one ink ejecting tube (24), each having a respective, ink conducting tube (30), each tube may be wound around the drum (1301 for one and a half turns between diametrically opposite positions on the circumference of the drum, so that each half turn of the drum left free by one tube (30) is occupied by the first half turn of an adjacent tube (30). This arrangement minimises the axial length of the drum occupied by the tubes (30).摘要翻译： 头部包括用于当操作换能器（36）时通过喷嘴（54）喷射墨水的管（24）。 管（24）通过比管（24）和储存器（31）之间的距离更长的柔性管（30）连接到储墨器（31）。 管（30）以优选由管（30）利用空间的布置卷绕在滚筒（130）上。 当头部包括多于一个的喷墨管（24）时，每个喷墨管都具有相应的导墨管（30），每个管可围绕滚筒（130）缠绕在圆周上的直径相对位置之间一个半圈 ，使得由一个管（30）自由的滚筒的每个半圈被相邻管（30）的前半匝占据。 这种布置使得管（30）占据的滚筒的轴向长度最小化。
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4.发明公开
公开(公告)号：EP0089797A3
公开(公告)日：1986-05-14
申请号：EP83301404
申请日：1983-03-15
发明人： Caneschi, Mario , Tadini, Giorgio
CPC分类号： H03M7/42 , H04N1/2166 , H04N1/4105 , H04N1/4175
摘要： One-dimensional compression is effected by addressing a first ROM (62) with information in respect of the length and the type of run. One-dimensional decompression is effected by addressing with the compressed code, a second ROM, bearing the information in respect of the runs and the length of the code. That is provided by a shift register controlled by a logic unit capable of recognising a group of least significant bits, to permit additional shifting of the register, and addressing of the second ROM with a bit number less than the maximum length of the codes. For two-dimensional compression or decompression, there is provided a pair of RAMS for temporarily storing a reference line which, together with the current line, actuates a logic means (38), for controlling coding and decoding of the latter. For compression of the medium tones, besides the runs of the two colours, coding is effect in respect of the runs of the alternations of the two colours defined on the basis of the colour of the initial pixel, and the type of the successive run is defined. Besides the coding and decoding for two- colour images, the two ROMs also carry the coding and decoding for images with the half-tones. Finally, the apparatus comprises an archive memory which can be connected to the compression module for achival storage of the images with the maximum degree of compression. By instead connecting the decompression module between the archive memory and the compression module, the image can be transmitted with a type of compression compatible with the receiving station.
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公开(公告)号：EP0333312A3
公开(公告)日：1991-05-22
申请号：EP89301032.2
申请日：1989-02-02
IPC分类号： H04N1/46
摘要： The device comprises a colour indicator (47) for recording a signal (44) in association with a reading signal for a predetermined colour (G). The colour indicator signal is derived from a table of zones of colours which is recorded in a ROM and can be addressed by the reading signals of the various colours, input from corresponding reading elements via compensation circuits (14G,14R,14B). The colour signal is capable of controlling second selective scanning of document for recording the reading signals for all the primary colours of the image. The ROM is also capable of providing an indication of the mixture of colours of each pixel, which is compared (51) to a predetermined mask (M) for the purposes of suppressing a particular mixture of colours from the recording.
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公开(公告)号：EP0185652A3
公开(公告)日：1986-10-01
申请号：EP86200146
申请日：1982-07-19
IPC分类号： B41J03/04
摘要： The head comprises a tube (24) for ejecting ink through a nozzle (54), when a transducer (36) is operated. The tube (24) is connected to an ink reservoir (31) by a flexible tube (30), which is longer than the distance between the tube (24) and the reservoir (31). The tube (30) is wound on a drum (130) in an arrangement which optimises the utilisation of space by the tube (30). When the head comprises more than one ink ejecting tube (24), each having a respective, ink conducting tube (30), each tube may be wound around the drum (1301 for one and a half turns between diametrically opposite positions on the circumference of the drum, so that each half turn of the drum left free by one tube (30) is occupied by the first half turn of an adjacent tube (30). This arrangement minimises the axial length of the drum occupied by the tubes (30).
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8.发明授权
公开(公告)号：EP0089797B1
公开(公告)日：1991-07-17
申请号：EP83301404.6
申请日：1983-03-15
发明人： Caneschi, Mario , Tadini, Giorgio
CPC分类号： H03M7/42 , H04N1/2166 , H04N1/4105 , H04N1/4175
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9.发明公开Circuit for automatically adjusting the digitisation threshold of a reading signal for a digital image scanning device 失效用于自动调整用于数字图像扫描装置的读取信号的数字化阈值的电路
公开(公告)号：EP0333313A3
公开(公告)日：1991-05-02
申请号：EP89301080.1
申请日：1989-02-03
IPC分类号： H04N1/40
CPC分类号： H04N1/403
摘要： The circuit defines the digitization threshold (V s ) in dependenced on the positive-peak and negative-peak signals previously received from the elements for scanning the pixels of the image, and in dependence on the analog signal (AS) of the pixel. The circuit comprises two detectors (21, 22) for respectively detecting a positive peak and a negative peak and which each have a short charge time constant and a long discharge time constant. A summing circuit (25) generates the threshold signal (V s ) as a linear combination of the signals (V max , V min ) of the detectors (21, 22), the analog signal (AS) of the pixel and a reference signal (V r ). Finally the threshold signal is compared (26) to the analog signal (AS) of the pixel to produce a binary reading signal.
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10.发明公开Circuit for automatically adjusting the digitisation threshold of a reading signal for a digital image scanning device 失效用于读出信号的数字化阈值的用于数字图像扫描仪的自动平衡电路布置。
公开(公告)号：EP0333313A2
公开(公告)日：1989-09-20
申请号：EP89301080.1
申请日：1989-02-03
IPC分类号： H04N1/40
CPC分类号： H04N1/403
摘要： The circuit defines the digitization threshold (V s ) in dependenced on the positive-peak and negative-peak signals previously received from the elements for scanning the pixels of the image, and in dependence on the analog signal (AS) of the pixel. The circuit comprises two detectors (21, 22) for respectively detecting a positive peak and a negative peak and which each have a short charge time constant and a long discharge time constant. A summing circuit (25) generates the threshold signal (V s ) as a linear combination of the signals (V max , V min ) of the detectors (21, 22), the analog signal (AS) of the pixel and a reference signal (V r ). Finally the threshold signal is compared (26) to the analog signal (AS) of the pixel to produce a binary reading signal.
摘要翻译： 该电路在定义上dependenced从元件先前接收到的用于扫描图像的像素的正峰值和负峰值信号数字化的阈值（VS），而在像素的模拟信号（AS）的依赖。 该电路用于分别检测正峰值和负峰值，并各自具有一个短的充电时间常数和放电时间长常数包括两个检测器（21，22）。 检测器的求和电路（25）基因率阈值信号（Vs）作为信号的线性组合（最大值，最小值）（21，22），所述模拟信号的像素的（AS）和参考信号（VR） ， 最后，阈值信号进行比较（26）以产生二进制读出信号的像素的模拟信号（AS）。
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