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公开(公告)号：US4625216A
公开(公告)日：1986-11-25
申请号：US762737
申请日：1985-08-05
申请人： Ralf M. Brooks , Brian P. Connell
发明人： Ralf M. Brooks , Brian P. Connell
CPC分类号： B41J2/35
摘要： A system and method are disclosed for automatically compensating for overutilized elements in a thermal printhead. The system is implemented by utilizing a graphics style line thermal printhead with a greater number of resistive or thermal elements than are needed for the maximum number of characters to be printed. These spare or extra elements are positioned on the leading side of a nominal designated print area or field within the thermal printhead, such that a microprocessor under software control can sequentially shift for each new print line the leading edge of all character positions contained in the print field incrementally to one side, allowing increased utilization of formerly underutilized elements. In a preferred embodiment the magnitude of this sequential sideways shift is determined by the number of spare or extra elements which border the leading side of the nominal print field.
摘要翻译： 公开了用于自动补偿热打印头中的过度使用的元件的系统和方法。 该系统通过使用具有比要打印的最大字符数所需的更多数量的电阻或热元件的图形样式线热打印头来实现。 这些备用或额外的元件被定位在热打印头内的标称指定的打印区域或场的前方，使得软件控制下的微处理器可以顺序地移动每个新打印行包含在打印中的所有字符位置的前沿 逐渐增加到一边，从而增加以前未充分利用的元素的利用。 在优选实施例中，该顺序横向偏移的幅度由与标称打印区域的前端相邻的备用或额外元件的数量来确定。
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公开(公告)号：US4758966A
公开(公告)日：1988-07-19
申请号：US859515
申请日：1986-05-05
申请人： Ralf M. Brooks , Brian P. Connell
发明人： Ralf M. Brooks , Brian P. Connell
IPC分类号： B41J2/355 , B41J2/35 , B41J2/37 , B41M5/382 , H04N1/40 , H04N1/401 , G01D15/10 , B41J3/20 , G06F15/62
CPC分类号： H04N1/4005 , B41J2/04541 , B41J2/1601 , B41J2/37 , H04N1/40031 , H04N1/4015
摘要： A thermal printing apparatus and method are disclosed which allows a plurality of thermal print head elements to remain concurrently active, with each individual element being capable of remaining active for a time duration unique to itself and independent of burn times required by the remaining elements. This individual element burn time control is obtained by the high-speed loading and reloading of the thermal print head shift register, with the contents of the individual shift register cells being the controlling factor. Once the thermal print head element resistances have been dynamically measured, specific energies are derived for each element in the printhead by modulating the on time for each element, thus allowing grey scale printing and the like.
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公开(公告)号：US4712113A
公开(公告)日：1987-12-08
申请号：US886488
申请日：1986-07-17
摘要： A thermal printing apparatus is disclosed in which ribbon advancing mechanism including a supply spool and a take-up spool operated by a stepping motor is disclosed. Mechanism is provided for reversing the direction in which the take-up spool is driven by a specified amount during the printing cycle, in order to provide ribbon slack, so as to avoid smudging of the transferred ink on the receiving document and possible ribbon breakage during printing. The circumference of the accumulated ribbon on the take-up spool at any given time is considered in determining the number of steps and the step rate of the stepping motor in the reverse direction which must be taken in order to produce the desired amount of ribbon slack and slack take-up.
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公开(公告)号：US4595935A
公开(公告)日：1986-06-17
申请号：US640894
申请日：1984-08-14
摘要： A system and method are disclosed for automatically detecting any defective elements in a linear array of thermal printhead elements of a thermal printer and for automatically correcting for at least one defective thermal printhead element. In a preferred embodiment of the invention an ON/OFF line from a microprocessor is turned OFF to turn off a voltage regulator, thereby preventing the thermal printhead elements from printing. With the voltage regulator OFF, a diode is forward biased to enable a voltage divider to be formed between a sensing resistor and any one of the thermal printhead elements that is activated at any given time. When a subsequent sense voltage (or resistance measurement) of an element exceeds the value of the initial reference sense voltage for that by a predetermined amount, that element is detected as a defective element. A software subroutine, in the microprocessor is then utilized to change the position of serial data bits carrying data to be printed such that the detected defective thermal element is not utilized during a normal printing operation.
摘要翻译： 公开了一种用于自动检测热敏打印机的热打印头元件的线性阵列中的任何缺陷元件并且用于自动校正至少一个有缺陷的热打印头元件的系统和方法。 在本发明的优选实施例中，来自微处理器的ON / OFF线被关断以关闭电压调节器，从而防止热打印头元件的打印。 在电压调节器关闭的情况下，二极管被正向偏置，以便在感测电阻和任何一个在任何给定时间被激活的热敏打印头元件之间形成一个分压器。 当元件的后续感测电压（或电阻测量）超过预定量的初始参考感测电压的值时，该元件被检测为缺陷元件。 然后利用微处理器中的软件子程序改变携带要打印的数据的串行数据位的位置，使得在正常打印操作期间未使用检测到的有缺陷的热元件。
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公开(公告)号：US4797837A
公开(公告)日：1989-01-10
申请号：US855271
申请日：1986-04-24
申请人： Ralf M. Brooks
发明人： Ralf M. Brooks
摘要： Method and apparatus for control of the temperature of a thermal printing device. Thermoelectric heat pumps are used to cool a thermal print head which does not cool between cycles sufficiently below the threshold temperature for the thermal paper or thermal transfer ribbon being used, due to heat build-up, particularly during high-speed operation. A sensed thermal print head temperature is digitized and compared to a reference temperature for a determination of whether or not operation of the heat pumps should be initiated or halted.
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6.发明授权Document image processing system including a first document path for the automated processing of documents and a second document path for the processing of documents requiring operator correction 失效文件图像处理系统，包括用于文档的自动处理的第一文档路径和用于处理需要操作员校正的文档的第二文档路径
公开(公告)号：US5754673A
公开(公告)日：1998-05-19
申请号：US491645
申请日：1995-06-19
申请人： Ralf M. Brooks , John Otto Vieth
发明人： Ralf M. Brooks , John Otto Vieth
CPC分类号： G06K9/033
摘要： An image based, dual path, document processing system including an imaging unit, a character recognition unit, a dual path module and an encoder. A document received by the system is sequentially processed through the imaging unit, the character recognition unit, the dual path module and the encoder. The imaging unit images the front face of the document and attempts to identify character data appearing on the face of said document, such as a hand-written courtesy amount appearing on a bank check, while the character recognition unit is utilized to reads machine-readable data, such as MICR data, printed on the face of the document. The dual path module includes a first document path for directly delivering the document through the dual path module to the encoder upon successful processing of the document by the imaging and character recognition units, and a second document path including an action window wherein an operator may perform corrective action on the document upon unsuccessful processing of the document by either the imaging unit or the character recognition unit.
摘要翻译： 一种基于图像的双路径文件处理系统，包括成像单元，字符识别单元，双路径模块和编码器。 系统接收到的文件通过成像单元，字符识别单元，双路径模块和编码器顺序处理。 成像单元对文档的正面进行成像，并尝试识别出现在所述文档的表面上的字符数据，例如出现在银行支票上的手写礼貌数量，而字符识别单元用于读取机器可读 数据，如MICR数据，印在文件的面上。 双路径模块包括用于通过成像和字符识别单元成功处理文档时通过双路径模块将文档直接传递到编码器的第一文档路径，以及包括操作窗口的第二文档路径，其中操作者可以执行 通过成像单元或字符识别单元对文档的不成功的处理对文档进行纠正。
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7.发明授权Apparatus and method for calibrating printing at a specified distance from a document edge 失效用于校准距文件边缘指定距离的打印的设备和方法
公开(公告)号：US4960336A
公开(公告)日：1990-10-02
申请号：US470452
申请日：1990-01-26
CPC分类号： B41J11/46
摘要： A method for calibrating a printer to print data beginning at a specified distance from the reference edge of a document. Several test documents are moved through a print station and a test symbol is printed on each of them with a preselected set of heating elements from a dot matrix thermal printer. The test documents are then processed through the same print station whereupon a sensor detects the reference edge of the document and the test symbol. A master controller then determines a test symbol distance between the reference edge and the midpoint of the test symbol for each test document. A plurality of test documents is processed in this manner, and the master controller determines an average test symbol distance for the plurality of test documents. Using an average test symbol distance, the master controller determines the distance between the sensor and a given hewating element of the thermal printer. The master controller than calculates a calibration distance which is based on a comparison of actual distance between the reference edge and the preselected heating elements versus average test symbol distance. In order to calibrate the printer to account for the calibration distance so that the printer prints data beginning at substantially the specified distance from the reference edge of the document, the master controller utilizes a stepping motor to make coarse calibration adjustments by advancing the document in full and/or half steps. Fine calibration adjustments are made by selectively energizing heating elements of the thermal printer.
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公开(公告)号：US4815726A
公开(公告)日：1989-03-28
申请号：US137636
申请日：1987-12-24
CPC分类号： B65H5/062 , G06K13/04 , G06K13/07 , B65H2301/321 , B65H2601/11
摘要： A document transport apparatus which also provides for the quick release of a jammed document to facilitate its removal from the associated document track. First and second pinch rollers are mounted on a planar member which is moved, resiliently, into engagement with their associated first and second drive rollers. Slotted mounting members are used to mount the opposed ends of the planar member to one upstanding wall of the document track and to enable the planar member to move in a plane which is parallel to the document feeding direction. An operating lever is used to move the planar members with the pinch rollers thereon between engaged and disengaged positions with regard to associated drive rollers.
摘要翻译： 一种文件传送装置，其还提供用于快速释放卡住的文件以促进其从相关联的文档轨道移除。 第一和第二夹送辊安装在平面构件上，弹性地与其相关联的第一和第二驱动辊接合。 开槽的安装构件用于将平面构件的相对端安装到原稿轨道的一个直立的壁上，并使平面构件能够在平行于原稿输送方向的平面内移动。 操作杆用于使平面构件与其上的压紧辊相对于相关的驱动辊在接合位置和脱离位置之间移动。
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9.发明授权Method and apparatus for thermally printing data in special fonts on documents like checks 失效在诸如支票的文件上以特殊字体热打印数据的方法和装置
公开(公告)号：US4818126A
公开(公告)日：1989-04-04
申请号：US561449
申请日：1983-12-14
IPC分类号： B41J2/325 , B41J25/304 , B41J3/20
CPC分类号： B41J25/304 , B41J2/325
摘要： A thermal printing apparatus including a print station, a transport mechanism for positioning a record medium at the print station, an arcuately-shaped platen, a line of printing elements and a thermally responsive ribbon. Relative movement between the platen and the printing elements is effected from a pivot point. Printing in a variety of styles of fonts like E13B is possible on documents like checks or deposit slips, for example. Special spring and wire members facilitate the separation of the ribbon from the document after printing.
摘要翻译： 一种热敏打印设备，包括打印站，用于在打印站定位记录介质的传送机构，弧形台板，打印元件行和热响应带。 压板和打印元件之间的相对运动是从枢轴点进行的。 例如，像支票或存单这样的文件可以打印各种风格的字体，如E13B。 特殊的弹簧和线材便于打印后色带与文件的分离。
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公开(公告)号：US4433902A
公开(公告)日：1984-02-28
申请号：US320803
申请日：1981-11-12
CPC分类号： B41J2/4655
摘要： A non-impact printing method wherein pulsed light is transmitted through a mask containing enlarged characters. The characters are optically reduced and are focused on a document in back of a heat-sensitive or thermal magnetic ink ribbon. Heat energy projected by the pulsed light causes ink transfer from the ribbon onto the paper.
摘要翻译： 一种非冲击式打印方法，其中脉冲光通过包含放大字符的掩模传输。 这些字符被光学减少，并且聚焦在热敏或热磁性墨带背面的文档上。 由脉冲光投射的热能导致油墨从色带转移到纸上。
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