摘要:
A thermal transfer printer which can use both an ink sheet provided with a positioning mark to indicate the top position of a set of three color ink patches necessary for producing one image, and an ink sheet provided with no such positioning mark, without the need of switching an operation mode. The thermal transfer printer has an optical sensor which can equally detect a color change between 3rd and 1st color patches on the ink sheet provided with no positioning mark and a color change between a positioning mark and a 1st color patch on the ink sheet provided with the positioning mark. There is also disclosed an ink sheet cassette for use in the thermal transfer printer, the ink sheet cassette accommodating the ink sheet in which a positioning mark is coated with the same color(s) of ink as those for printing and information about the color sequence of the ink coated patches for printing is also recorded in the coated pattern of the positioning mark.
摘要:
A method of making a dye-donor film is provided with printing code marking formed on clear areas interspersed between successive sets of dye patches formed on the film.
摘要:
A continuous-tone thermal printer includes a transport mechanism for advancing a print medium past a thermal print head while continuous-tone image information is being printed, line-by-line, on the medium. To increase the rate at which thermal prints are produced, the printer includes asynchronous motor-control apparatus for selectively accelerating the movement of the print medium relative to the print head to quickly locate the print head at the start of a new image line immediately following the printing of that pixel(s) having the highest image density in the preceding image line. Preferably, such motor-control apparatus includes a digital signal processor which determines the maximum pixel density on each line. Upon printing such maximum pixel density, the digital signal processor causes a motor controller to temporarily increase the print medium velocity past the thermal print head to the start of the next image line.
摘要:
A color ink ribbon positioning system for use with color printing apparatus that uses a color ink ribbon having a plurality of different colored ink regions formed at predetermined intervals on a ribbon base, in which only a single ink region marker block is provided for each set of colored ink regions, includes a detector for detaching the ink region marker block and a calculating unit for determining the leading edge of each color ink region that is to be successively arranged next to the printer head, so that is it only necessary to detect the single marker block in order to advance the ribbon to print the successive colors of a set.
摘要:
In a thermal printer for printing color images which uses a carrier having a repeating series of spaced frames of yellow, magenta and cyan colored heat transferable dyes, apparatus for identifying the different color frames of each series uses a source of red light and a source of yellow light. The apparatus responds to the intensity of red and yellow source light which passes through a dye frame to identify that dye frame.
摘要:
A method of and an apparatus for printing patterns of information on a record sheet, wherein those selected out of a number of printer elements arranged in an array are actuated to heat selected ones of differently colored, recurrent colored sections of a variegated, heat-sensitive ink ribbon for producing dots of different colors on the record sheet during each of a predetermined number of dot printing steps of a line printing cycle.
摘要:
An ink donor sheet color detecting device is disclosed wherein markers differentiated from each other in shape or in length for individual colors of inks applied to an ink donor sheet are provided at positions on the ink donor sheet corresponding to individual ink areas while a judging means for judging the differentiated shaper or length of a marker is provided in order to to allow distinction of a color of the ink of an ink area corresponding to the marker.
摘要:
A method of and an apparatus for printing patterns of information of a record sheet, wherein those selected out of a number of printer elements arranged in an array are actuated to heat a succession of differently colored, recurrent colored sections of a variegated, heat-sensitive ink ribbon for producing dots of different colors on the record sheet during each of a predetermined number of dot printing steps of a line printing interval.
摘要:
Apparatus for thermally printing images, such as color images, on a print medium. The medium is moved repeatedly from a reference position through a printing region, as by rotating the medium on a platen. Thermal print elements are disposed at the print region and are selectively energizable to cause images, such as color images, to be printed. A movable web of thermally transferable material has a run interposed between the print medium and the thermal elements at the print region. In one embodiment, the web is provided with successive frames of respectively different colors of thermally transferable material arranged in repeated sequence. Energizing signals are supplied to the thermal elements representative of the image to be printed; and an image is printed in a color corresponding to the color frame then disposed at the printing region. Successive passes of the print medium are made in order to print images of the remaining colors in the sequence of frames on the web.