摘要:
A plurality of recording heads capable of ejecting inks of different colors is reciprocated relative to a recording material to print ink dots on the recording material while effecting main scanning in the forward and the backward pass thereof. A plurality of thinning patterns produced by preparing m.times.n unit picture element groups and arraying these unit groups in such a manner that the groups avoid mutually adjoining and assume a mutually complementary relation is used to effect a plurality of rounds of main scanning in the forward and the backward pass over an area which can be printed by one round of main scanning, record a thinned image, and complete the recording of an image. The array of picture element groups in the thinning patterns is determined so that the groups may mutually adjoin relative to the direction of main scanning.
摘要:
A recording apparatus wherein a recording head which has been mounted can be identified more precisely by measuring characteristics of the recording head to obtain information for defining a drive condition of the head and storing the characteristics as ID information of the recording head.
摘要:
An ink containing apparatus for containing ink includes a negative pressure producing material; a first container for containing the negative pressure producing material, the first container having an air vent and a supply port for supplying the ink out; a second container for containing ink; a communication part for communication between bottom portions of the first and second containers; and ribs for introducing ambient air adjacent the air vent for introducing air into the communication part.
摘要:
An ink jet recording apparatus comprises a recording head adapted for ejecting at least two colors of ink, a discriminater for discriminating between character data and bit map data, and a controller for selecting a character data recording mode or a bit map data recording mode in accordance with a discrimination result by the discriminater. The controller controls an amount of ink ejection in the bit map data recording mode to be less than that in the character data recording mode.
摘要:
A plurality of recording heads for ejecting inks of different colors are reciprocally moved relative to a recording medium, and printing operations are performed by executing main scans in forward and backward scans of the recording heads. In this case, an area printable in a single main scan is recorded by performing a plurality of main scans using a plurality of thinning patterns in which an m.times.n pixel group is defined as a unit pixel group, and the pixel groups are arranged at non-neighboring positions, and which have a complementary arrangement relationship therebetween. A high-quality color image free from time difference nonuniformity, and density nonuniformity caused by, e.g., variations of recording elements is obtained at high speed.
摘要:
An ink jet recording apparatus can obtain characteristics of temperature sensors precisely in a short time by detecting that a new recording head is installed and presuming the characteristics of the temperature sensors of the recording head.
摘要:
An information transmitting mechanism is described for transmitting information of an ink tank of an ink jet recording apparatus to a controller thereof. The recording apparatus performs recording by scanning a carriage on which a recording head and the ink tank are mounted; the ink tank is removably mounted to said recording head. The information transmitting mechanism includes the ink tank and the recording head; in particular, the ink tank has an information mark. The recording head is connected to the ink tank and has a signal terminal making a signal connection with the ink tank and with the controller of the apparatus. The content of the information mark is transmitted to the controller through the signal terminal. The information relating to the ink tank is transmitted to the controller through the head terminal and through the carriage terminal. The information relating to the recording head is transmitted to the controller through the carriage terminal.
摘要:
Image data is thinned out by using thinning patterns having arrays not synchronized with an image data array according to an area gradation method at the same duty, and the resulting thinned image data is divisionally recorded on a predetermined area of a recording medium by using different record areas of a recording head while a scan operation is performed a plurality of number of times. The thinning patterns are formed such that substantially equal quantities of an ink are implanted in a plurality of number of times of the divisional recording.
摘要:
A replaceable ink cartridge, usable with a bubble jet printer, includes a container having front, back, top bottom and side walls, the container being divided internally into a first chamber and a second chamber having a common partition extending downward perpendicularly toward the bottom wall to provide an opening between the chambers formed by the partition proximate to the bottom wall. The first chamber contains a reservoir of liquid ink and is generally sealed from ambient air except through the opening, and the second chamber has an air vent for admitting ambient air into the second chamber and an ink supply outlet in the front wall. The second chamber contains a sponge-like material for retaining ink, at least one groove in the second chamber side of the partition extending from the opening and terminating at a point partly up the partition to form an air flow passage from the second chamber to the first chamber, the sponge-like material being positioned in the second chamber to permit flow of air from the air vent to the groove when the level of retained ink in the sponge-like material is proximate to the point where the groove terminates. The container is removably mountable in a printer mounting with the bottom wall facing downward and the ink supply outlet facing an ink jet print head so that the ink supply outlet is connectable to an ink port of the ink jet print head.
摘要:
An ink jet recording apparatus includes a recording head for performing recording by discharging ink by forming a bubble by applying thermal energy to a heat acting portion of an ink holding portion of the recording head. Thermal energy is generated in the recording head and a cap sealingly caps a discharge opening forming surface of the recording head. Ink is sucked from the cap and positive recovery is effected so that 10.sup.4 or more times of preliminary discharges are performed toward the cap which is detached from the recording head, by supplying energy greater than energy at a recording condition by predetermined multiples of a minimum energy E.sub.o required for generating the bubble, and for causing the ink to be sucked in the cap that is open to atmosphere.