-
公开(公告)号：US4590487A
公开(公告)日：1986-05-20
申请号：US655739
申请日：1984-09-28
CPC分类号： B41J2/3555 , B41J2/355 , B41J2/365
摘要： A thermal head drive circuit is provided in which the thermal energy applied during printing is corrected due to the black-white ratio, the thermal head's heat accumulation and the heat history data. The circuit includes a heat accumulation state operator, a pulse width calculator, a pulse width memory and a pulse width determining circuit. The circuit also includes a fundamental pulse width determining circuit and an auxiliary pulse width determining circuit for determining the additional pulse width to be applied with the output from the fundamental pulse width determining circuit.
摘要翻译： 提供一种热敏头驱动电路，其中打印期间施加的热能由于黑白比例，热头的热积累和热历史数据而被校正。 该电路包括热积累状态运算符，脉冲宽度计算器，脉冲宽度存储器和脉冲宽度确定电路。 该电路还包括基本脉冲宽度确定电路和辅助脉冲宽度确定电路，用于确定要施加于基本脉冲宽度确定电路的输出的附加脉冲宽度。
-
公开(公告)号：US4622595A
公开(公告)日：1986-11-11
申请号：US678877
申请日：1984-12-06
CPC分类号： H04N1/4057
摘要： An image reproducing apparatus wherein a halftone of an image is reproduced by repeating a picture element pattern composed of a plurality of dots as a unit and each dot display density of which is gradually controlled. The repetition of the same picture element patterns is avoided to improve tone reproducing performance.The image display unit includes a means for determining a disposition of dots composing a specific picture element pattern, i.e., display density of each dot in response to tone density of the original image, a means for comparing the disposition of dots of the specific picture element pattern determined by said means with a dot disposition or dispositions of one or plural surrounding picture element pattern or patterns, and a means for changing the dot disposition of said specific picture element pattern in the case when it is identical with dot dispositions of a predetermined number or more of surrounding picture element patterns.
摘要翻译： 一种图像再现装置，其中通过将由多个点组成的像素图案重复为一个单位并逐渐控制其每个点显示密度来再现图像的半色调。 避免重复相同的图像元素图案以改善色调再现性能。 图像显示单元包括用于确定构成特定图像元素图案的点的布置的装置，即响应于原始图像的色调密度的每个点的显示密度，用于比较特定图像元素的点的布置的装置 由所述装置确定的图案，其具有点布置或一个或多个周围图像元素图案或图案的布置，以及用于在与预定数量的点布置相同的情况下改变所述特定图素元素图案的点布置的装置 或更多的周围图像元素图案。
-
公开(公告)号：US4567488A
公开(公告)日：1986-01-28
申请号：US686936
申请日：1984-12-27
CPC分类号： B41J2/3555 , B41J2/355
摘要： A method and device for driving a thermal head taking into consideration not only picture data already recorded and picture data on the line containing the aimed data currently being recorded, but also picture data intended to be recorded.
摘要翻译： 不仅考虑已经记录的图像数据和包含当前正在记录的目标数据的行上的图像数据，而且考虑了要被记录的图像数据，驱动热敏头的方法和装置。
-
公开(公告)号：US4685069A
公开(公告)日：1987-08-04
申请号：US684787
申请日：1984-12-21
CPC分类号： G01D15/10
摘要： A heat storage correction apparatus and method determines the degree of solidity of a picture data to be recorded and increases the quantity of energy supplied to data elements recording substantially solid portions of the picture elements.
摘要翻译： 热存储校正装置和方法确定要记录的图像数据的稳定度，并且增加提供给记录基本上实心部分的图像元素的数据元素的能量。
-
公开(公告)号：US4563691A
公开(公告)日：1986-01-07
申请号：US685382
申请日：1984-12-24
CPC分类号： B41J2/35
摘要： A thermo-sensitive recording apparatus individually controls the energization level of each of a plurality of heater elements formed on a substrate and constituting a thermal print head. In generating each energization level, the present and previous status of an individual heater element and selected neighboring elements are taken into consideration. Other factors combined in a selectively weighted manner include the latent heat of the individual heater element and its neighboring heater elements, the resistance of the heater element, the percentage of heater elements to be activated during the printing of a line, and the temperature of the substrate.
摘要翻译： 热敏记录装置分别控制形成在基板上并构成热打印头的多个加热元件中的每一个的通电电平。 在产生每个通电电平时，考虑各个加热器元件和选定的相邻元件的当前状态和先前状态。 以选择性加权的方式组合的其他因素包括各个加热器元件及其相邻的加热器元件的潜热，加热器元件的电阻，在印刷线路期间被激活的加热器元件的百分比，以及 基质。
-
公开(公告)号：US4638372A
公开(公告)日：1987-01-20
申请号：US654403
申请日：1984-09-26
申请人： Svay Leng , Hiroyuki Saitoh , Toshiharu Inui , Norihiko Koizumi , Haruhiko Moriguchi , Takashi Omori , Masami Kurata , Yasuo Katoh
发明人： Svay Leng , Hiroyuki Saitoh , Toshiharu Inui , Norihiko Koizumi , Haruhiko Moriguchi , Takashi Omori , Masami Kurata , Yasuo Katoh
IPC分类号： B41J2/325 , B41J17/38 , B41J35/16 , H04N1/23 , H04N1/40 , H04N1/48 , H04N1/50 , H04N1/21 , H04N1/46
CPC分类号： H04N1/484 , H04N1/40031 , H04N1/506
摘要： A copier capable of producing both color images and monochrome images is disclosed, which comprises a platen for mounting thereon a manuscript, a scanner unit adapted to reciprocate relative to the platen and generate image signals divided in three primary colors by reading the manuscript for each line or for each set of a plurality of lines, four thermal heads for receiving image signals and, in response thereto, selectively actuating heat generation elements, means for supplying the thermal heads with ink donor films of four colors including black, and means for effecting thermal transfer printing on record paper.
摘要翻译： 公开了能够产生彩色图像和单色图像的复印机，其包括用于在其上安装原稿的压板，适于相对于压板往复移动的扫描器单元，并且通过读取每行的原稿产生分为三原色的图像信号 或对于每组多条线，四个热敏头用于接收图像信号，并且响应于此选择性地致动发热元件，用于向热敏头供应包括黑色的四种颜色的供墨膜的装置，以及用于实现热 在记录纸上转印。
-
公开(公告)号：US4560988A
公开(公告)日：1985-12-24
申请号：US399147
申请日：1982-07-16
CPC分类号： B41J2/355
摘要： A thermal head for use in thermal printing is operated according to a method in which the data of one line are recorded divisionally, with recording operations for the first and second halves of a line being carried out alternatingly and repeatedly.
摘要翻译： 用于热敏打印的热敏头根据其中一行的数据被分开地记录的方法进行操作，其中一行的第一和第二半的记录操作被交替地重复执行。
-
公开(公告)号：US4535340A
公开(公告)日：1985-08-13
申请号：US620258
申请日：1984-06-13
CPC分类号： B41J2/36
摘要： A thermal head is provided with a plurality of juxtaposed heat generating resistors for applying heat to heat sensitive printing medium for reproducing a picture. The resistance values of the heat generating resistors are individually detected at predetermined times and used to update the contents of a memory means. An arithmetic operating circuit calculates quantities of electric power to be supplied to respective heat generating resistors for causing them to generate the same quantity of heat irrespective of the difference in the resistance values of the heat generating resistors.
摘要翻译： 热敏头具有多个并置的发热电阻器，用于向用于再现图像的热敏打印介质施加热量。 在预定时间单独地检测发热电阻器的电阻值，并用于更新存储器装置的内容。 算术运算电路计算供给到各个发热电阻器的电力量，使得它们产生与发热电阻器的电阻值的差异相同的热量。
-
公开(公告)号：US4524368A
公开(公告)日：1985-06-18
申请号：US595338
申请日：1984-03-30
申请人： Toshiharu Inui , Haruhiko Moriguchi
发明人： Toshiharu Inui , Haruhiko Moriguchi
摘要： A thermal head drive circuit with the input connected to a source of printing data and the output connected to a thermal head including heater elements, so as to improve the picture quality of a thermal head recording apparatus for printing successive lines. Improved picture quality is effected by using data from previously printed lines to compute a corrected pulse energy for the line being printed. The circuit uses a heat storage state operator for operating the heat storage state of each of the heater elements constituting a thermal head, a pulse energy operator for computing a printing pulse energy to be applied to each of the heater elements, a memory for storing the electrical pulse energy used in the previously printed line, and a counter to count the number of dots on the line to be printed. The pulse energy operator uses data from the heat storage state operator, the counter, and from the memory which has data on the pulse energy used in previously printed lines. The output of the pulse energy operator is connected to a pulse generator which is used to drive the heater elements of a thermal head.
摘要翻译： 一种热敏头驱动电路，其输入端连接到打印数据源，输出端连接到包括加热器元件的热敏头，从而提高用于打印连续线的热敏头记录装置的图像质量。 通过使用来自先前打印的线的数据来计算改进的图像质量，以计算正在打印的线的校正脉冲能量。 电路使用蓄热状态操作器来操作构成热敏头的各个加热元件的蓄热状态，用于计算要施加到每个加热器元件的打印脉冲能量的脉冲能量算子，存储器 在先前打印的线中使用的电脉冲能量，以及计数要打印的线上的点数的计数器。 脉冲能量运算符使用来自储热状态运算符，计数器和存储器中的数据，存储器具有关于以前打印的线中使用的脉冲能量的数据。 脉冲能量运算器的输出端连接到用于驱动热敏头的加热元件的脉冲发生器。
-
公开(公告)号：US4514736A
公开(公告)日：1985-04-30
申请号：US455711
申请日：1983-01-05
申请人： Haruhiko Moriguchi , Toshiharu Inui
发明人： Haruhiko Moriguchi , Toshiharu Inui
CPC分类号： B41J2/345
摘要： A thermal head is provided with first and second sets of parallel bar-shaped electrodes which are arranged in slightly spaced parallel planes and cross over one another. Individual crossing resistors are selectively energized to produce a heat generating dot which may be reproduced on a heat sensitive media.
摘要翻译： 热敏头设有第一组和第二组平行的棒状电极，它们设置在稍微间隔开的平行平面上并相互交叉。 单独的交叉电阻器被选择性地通电以产生可以在热敏介质上再现的发热点。
-
-
-
-
-
-
-
-
-
搜索结果
126 条记录 (耗时 0.027 秒)
