摘要:
A wide-width format printer having detachable and replaceable paper feed unit components includes an automatic sheet feeder having a feeding width corresponding to standard width print media, a manual sheet feeder having a feeding width corresponding to standard width print media plus an additional width, paper feed unit for feeding print media fed from either the automatic sheet feeder or the manual sheet feeder through a paper path which passes a print position to a media ejection portion, the paper feed unit comprising at least first and second detachable print roller sections, first and second detachable spur wheel sections, at least two detachable friction wheels and a drive roller, wherein the first detachable print roller section and spur wheel section oppose each other, the second detachable print roller section and spur wheel section oppose each other and wherein the first and second detachable printer roller segments are aligned coaxially and the first and second detachable spur wheel segments are aligned coaxially.
摘要:
A wide-width format printer having detachable and replaceable paper feed unit components includes an automatic sheet feeder having a feeding width corresponding to standard width print media, a manual sheet feeder having a feeding width corresponding to standard width print media plus an additional width, paper feed unit for feeding print media fed from either the automatic sheet feeder or the manual sheet feeder through a paper path which passes a print position to a media ejection portion, the paper feed unit comprising at least first and second detachable print roller sections, first and second detachable spur wheel sections, at least two detachable friction wheels and a drive roller, wherein the first detachable print roller section and spur wheel section oppose each other, the second detachable print roller section and spur wheel section oppose each other and wherein the first and second detachable printer roller segments are aligned coaxially and the first and second detachable spur wheel segments are aligned coaxially.
摘要:
Improved techniques for measuring misalignment between multiple print heads, or between forward and reverse printing for the same print head. Adverse effects of ink bleeding, paper cockling and other ink ejection effects are reduced by superimposingly printed alignment patterns in which less than all pixels of printed portions of the patterns are filled in. Carriage ringing and overshoot effects are reduced by printing the alignment patterns in multiple passes, and preferably with an offset in carriage starting location for each pass. Improved detection of darkest density regions of the superimposingly printed alignment pattern is obtained through detections based on differences between densities rather than absolute values of measured densities.
摘要:
A printing device having multiple printheads includes an acquisition device to obtain temperatures of the multiple printheads, a determination device which determines, based on the obtained temperature of one printhead, a target temperature corresponding to each other of the multiple printheads in order to maintain a predetermined output level relationship between an output level of the one printhead and an output level of each other of the multiple printheads, and an adjustment device to adjust the temperature of each other of the multiple printheads to the corresponding target temperature.
摘要:
A system to perform a wiping operation upon an ink jet print head includes a first motion of the ink jet print head in a first direction to wipe the ink jet print head against a wiping element, and a second motion of the ink jet print head in the first direction to wipe the ink jet print head against the wiping element. A system to wipe an ink jet print head also includes a first motion of the ink jet print head in a first direction against a wiping element to wipe the ink jet print head, and ejection of ink toward the wiping element during the first motion. The wiping element may be a non-planar wave wiper.
摘要:
A host system for controlling a print head of an image printing device having at least one print head. The system includes the steps of obtaining profile information of the at least one print head, storing the profile parameters in a non-volatile memory, and outputting, upon request, the profile information to a host computer connected to the image printing device, wherein the host computer utilizes the print head profile information to produce compensation parameters which compensate print information to be sent from the host computer to the print head for printing.
摘要:
When a black image region is printed, the overall pixels in the region is printed by a black ink. Then, a cation type cyan ink which makes a coloring agent in the ink insoluble is printed on the pixels of a predetermined pattern. By this, the dye of the black ink is maintained near the surface of the printing medium to increase density of the black image. At the same time, for preventing variation of tone of the black image, the pixels of the predetermined pattern are printed by a yellow ink.
摘要:
In a recording apparatus for recording on a recording medium by a plurality of recording heads, a scan unit has a carriage capable of mounting the recording heads at a predetermined interval and causes the recording heads to scan corresponding divided recording areas. A record control unit causes the recording heads to conduct a first record mode to record an area of a first recording width in a direction of scan by shared recording by the recording heads of the corresponding recording areas and a second record mode to record an area of a second recording width smaller than the recording width of the first recording width by causing at least one of the recording heads to record in the corresponding divided recording area when the corresponding divided recording areas are scanned. A distance between two recording apparatus mounted at outermost positions in the arrangement of the recording heads on the carriage is not larger than a difference between the first recording width and the second recording width.
摘要:
An image fixing device, including first and second rotatable members for forming a nip therebetween, which transports from an entrance side to an exit side a recording material and fixes an image thereon; a mechanism for driving the first and second rollers; charge removing members having charge removing ends arranged along a longitudinal direction of the rotatable members and adjacent to a peripheral surface of the first rotatable member without contact thereto, the charge removing ends are within a region defined by the exist side ends of press-contact areas between the first rotatable member and the recording material and between the second rotatable member and the recording material, peripheral surfaces of the first and second rotatable members at the exit side, and a common tangent plane which is tangent to both of the peripheral surfaces of the first and second rotatable members at the exist side.
摘要:
A printing head, an ink jet printing apparatus, and an ink jet printing method can achieve high-speed printing while realizing a high-quality image. An ejection port face where an ejection port of the printing head is located is formed so that the normal line thereof intersects with an axis line of a nozzle at a predetermined angle. The ejection port face inclines in a relative moving direction of the printing head with a printing medium as a reference.