73 results about "Line printer" patented technology

The invention provides a soil moisture inversion method of a mono-frequency microwave radiometer and belongs to the field of microwave remote sensing. The soil moisture inversion method of the mono-frequency microwave radiometer is neither a multi-parameter simultaneous inversion method, nor an experience regression method, but uses the minimum auxiliary data, and the soil moisture is obtained by the single-parameter inversion method. According to the soil moisture inversion method of the mono-frequency microwave radiometer, the problems existing in the multi-parameter inversion of multiple solutions and huge calculation amount are solved, and the inversion error due to the fact that roughness is set to be a definite value in line printer remover (LPRM) algorithm is also avoided. Meanwhile compared with a science clubs of America (SCA) algorithm which excessively dependent on auxiliary data, the auxiliary data used by the soil moisture inversion method of the mono-frequency microwave radiometer are only soil texture data which are globally and freely shared, and the business application difficulty of the soil moisture inversion is greatly reduced.

In accordance with the present invention, the efficiency of printing systems are improved by manipulating the print data stream (PDS), e.g., an AFP data stream (AFPDS) prior to communication to the printer. The methods generally involve manipulating a PDS prior to communication to a printer to provide a modified PDS which is more efficiently process by a printer. The PDS may be manipulated in a variety of ways, including combinations of in-line printer resource extraction, data parsing, insertion of printer control parameters, etc. In various embodiments, in-line printer resources may be extracted from the data stream and placed in a database for later access, or alternatively may be processed by software or algorithms to generate a modified resource which is reintroduced to the data stream.

There is disclosed a thermosensitive line printer, wherein a heating element array of a thermal head is pressed on a thermosensitive recording paper at a distance L2 from a nipping position by a pair of conveyer rollers, and is driven to record an image frame line by line from a print starting end, as the recording paper is conveyed by the conveyer rollers in a direction from the thermal head to the conveyer rollers. Based on image data of an upper zone of an image frame that is to be recorded around the distance L2 from the print starting end if the image frame is recorded from its top side, an image analyzer calculates a first estimation value that represents conspicuousness of potential density deviation in the upper zone that could be caused by a thermal deformation of the thermosensitive recording paper at the print starting end if the image frame is recorded from the top side. The image analyzer calculates a second estimation value based on image data of a lower zone that is to be located at the distance L2 from the print starting end if the image frame is recorded from its bottom side. If the first estimation value is smaller than the second estimation value, the image frame is recorded from the top side, and vise versa.

A printing system and a printing control method for a printing system that enables automatically resumption of printing after recovering from a printing interrupt event without adding any changes to the conventional page printer, serial printer, line printer, or other type of printer and without needing to monitor which page is being printed when a printing interrupt event occurs. A reprint data management unit temporarily stores one page of print data to which page end information is added. A printing completion monitor monitors reception of a completion report that is sent by the printer when the printer reads the page end information. When the printing completion monitor detects the completion report, the reprint data management unit deletes the stored page of print data. A print interruption monitor detects if a printing interrupt event occurs during printing. If the print interruption monitor detects an interrupt and the cause of the interrupt is then corrected, the reprint data management unit sends the stored page of print data to the POS printer from the beginning again.

System and method for operating four resonant torsional hinged mirrors such as torsional hinged MEMS devices at the same oscillating frequency suitable for use in a color printer requiring four serially arranged line printers.

A printer capable of printing high-quality recording is provided. A driving force transmission gear mounted on a platen roller, driven rollers mounted on a pair of conveying rollers, respectively, and intermediate gears that always mesh with both the driving force transmission gear, and the driven rollers form a re-transmission mechanism that re-transmits the driving force transmitted to the platen roller from a driving motor to each of the one pair of conveying rollers. Also, gear supporting shafts that rotatably support intermediate gears are configured so as to be adjustable in position.

In order to improve the traveling stability of an ink ribbon, a thermal head having a structure in which an edge of one surface of a substrate, lying downstream with respect to the traveling direction of an ink ribbon, is formed so as to have a curved shape projecting most downstream with respect to the traveling direction of the ink ribbon at the widthwise central portion of the ink ribbon or a thermal-transfer line printer having a structure in which a separation member separating the ink ribbon from a paper sheet and a tension-exerting section are independently formed from each other is provided.

The invention relates to a wide-line printer and an ink supply system replacement method thereof. The wide-line printer comprises a shell, a carriage unit arranged in the shell, a printing head detachably arranged on the carriage unit, main ink boxes which are detachably arranged on the carriage unit and are communicated with the printing head, auxiliary ink boxes detachably arranged in the shell, ink conveying tubes which are detachably arranged in the shell and are communicated with the main ink boxes and the auxiliary ink boxes, an opening used for assembling and disassembling the ink conveying tube, and a baffle used for detachably covering the opening, wherein the opening is formed in the wall of the shell nearest a fixed section, and is positioned at a part corresponding to the fixed section, and each ink conveying tube comprises a swing section close to each main ink box and the fixed section close to each auxiliary ink box. When the ink supply system is replaced, the main ink boxes and the auxiliary ink boxes are replaced, the printing head is replaced or rinsed, the baffle is disassembled, and the ink conveying tubes are replaced through the opening, and then the baffle is assembled. The scheme not only is favorable for replacing the ink conveying tubes, but also can avoid the situation that different types of inks are mixed in the ink conveying tubes and the main ink boxes to generate a precipitate difficult to remove is avoided.

A print head for a line printer in which errors between print head chips and another component are reduced and ink leakage is prevented, and in which heat generated in print head chips is efficiently dissipated without making the structure of the print head complex or increasing the size of the print head. A plurality of print head chips (11) are arranged along an ink path (20) and are disposed on both sides of the ink path in a zigzag pattern. Dummy chips (21) which do not eject ink are disposed at regions between the print head chips (11) arranged along the ink path (20). In addition, an ink-path member (23) is provided, at least a part of the ink-path member (23) which includes portions adhered to the print head chips (11) being composed of a material having a high thermal conductivity, so that the ink-path member (23) also serves as heat-dissipating means which dissipates heat generated in the print head chips (11).

An ink-jet line printer (30) is constituted by multiple ink-jet heads (1-1 to 1-3). Actuators (3-1 to 3-3) are arranged so as to be moved between a home position and a print position, and backup mechanisms (2-1 to 2-3) are arranged at home positions. In this ink-jet line printer, the ink-jet heads can be protected and recovered by backup mechanisms, thus making high-speed continuous printing possible. Even though the backup mechanisms are incorporated, a compact apparatus can still be achieved.

An ink density closed loop control system for an ink ribbon of an impact line printer having a reservoir roller fluidly connected to a pump and ink supply. A transfer roller can contact the reservoir roller for imparting ink to the ink ribbon. A sensor senses the relative amount of ink on the print ribbon and an electrical drive responsive to the sensor drives the pump for a flow of ink to the one or more channels. The sensor can sense ink on different segments of the ribbon and, with two or more channels in the reservoir roller can distribute ink to two or more segments of the reservoir roller depending upon the ink sensed at a particular segment of the ribbon. A further enhancement of the invention provides a multi-viscosity ink to compensate for changes in ambient temperature conditions.

A printer capable of printing high-quality recording is provided. A driving force transmission gear mounted on a platen roller, driven rollers mounted on a pair of conveying rollers, respectively, and intermediate gears that always mesh with both the driving force transmission gear, and the driven rollers form a re-transmission mechanism that re-transmits the driving force transmitted to the platen roller from a driving motor to each of the one pair of conveying rollers. Also, gear supporting shafts that rotatably support intermediate gears are configured so as to be adjustable in position.

An inkjet line printer (1) has a first encoder (31) for detecting the media conveyance distance of the paper feed roller (10), and a second encoder (34) for generating a signal to control the ink ejection timing. The encoder scales (32, 35) of the first encoder (31) and second encoder (34) are disposed to the intermediate roller (20) of a speed reducing mechanism (13) that transfers drive power from the paper feed motor (12) to the paper feed roller (10). Because the second encoder (34) outputs a pulse signal with a predetermined number of pulses in the time the recording paper is conveyed a specific distance by the paper feed roller (10), the signal from the second encoder (34) can be used as a signal to control the timing of ink ejection from the inkjet head (3).