摘要:
An ink absorbent member is prepared for holding an ink stored in an ink storing section in an ink jet cartridge. The ink absorbent member contains not more then 0.20% by weight, on the basis of the member, of a fraction of soluble matters in a liquid containing an organic polar solvent incapable of reacting with the ink absorbent member such as monohydric alcohols or alkyl ethers of polyhydric alcohols.
摘要:
An ink tank having an ink storing portion encases an ink-absorbent member for holding ink. The ink-absorbent member comprises a porous material having therein compressed open cells. The compression ratio r.sub.1 of an apparent volume V.sub.1 before compression to an apparent volume V.sub.2 after compression (r.sub.1 =V.sub.1 /V.sub.2) and the cell number p represented by number of cells per inch in the state of V.sub.1 satisfy the relation (I) below, and p being not more than 60.100 [inch.sup.-1 ].ltoreq.r.sub.1 .multidot.p.ltoreq.200 [inch.sup.-1 ](I)
摘要:
A recording apparatus uses a liquid recording head for effecting recording by ejecting liquid through ejection outlets corresponding to heat generation elements provided in the recording head. The recording head has a heating device for heating the recording head. A controller will select a heat generating element from among the heat generating elements to correct a temperature distribution of the recording head resulting from the heating by the heating device such that the heat generating element generates heat to such an extent that liquid for recording is not ejected through the ejection outlet during the temperature correction.
摘要:
An ink container includes a casing, an air vent which is located in the casing, an ink supply opening for supplying ink out of the casing, and an ink absorbing material that is contained in the casing. The ink absorbing material retains ink therein, and has a generally rectangular parallelopipedal shape defined by sides of the ink absorbing material, and also has an ink supply portion for supplying ink to the ink supply opening. The ink absorbing material includes corner portions which are located between adjacent sides of the ink absorbing material. A preventing means prevents complete surface contact between the casing and said ink absorbing material by providing spaces between the casing and ink absorbing material which are in fluid communication with each other with a given space that is adjacent to a particular one of the corner portions that is most remote from the ink supply portion. The air vent is in fluid communication with the spaces.
摘要:
An ink jet head includes an ink container; a recording head having an ink ejection outlet; a supply pipe for supplying the ink from the container to the recording head; a porous material contained in the container for retaining the ink; wherein the supply pipe is pressed to the porous material to deform it, wherein a depth of the deformation is larger than a maximum length of a cross-section of the supply pipe.
摘要:
A substrate for a liquid jet recording head includes a plurality of built-in energy elements forming an array for generating thermal energy for ejecting liquid, built-in electrode wiring for supplying electric signals to the energy generating elements and first and second built-in temperature sensors disposed outside the array and adjacent opposite ends of the array for detecting a temperature of the substrate. First and second built-in heaters are disposed outside the array and adjacent opposite ends of the array for heating the substrate.
摘要:
The present invention involves recording apparatus having such a recording head that records using thermal energy. The recording head has a substrate which includes plural thermal energy generating elements for generating thermal energy, plural wiring lines electrically connected with associated said thermal energy generating elements, and a temperature detecting element built in the substrate. This temperature detecting element is either a diode or a transistor.
摘要:
An ink jet head cartridge include an ink container and a porous material contained in the container for retaining the ink. A process for filling the ink container includes the steps of supplying ink in a quantity greater than that which the porous material can retain through a first port and removing through a second port at least a quantity of ink which the porous material cannot retain. The process can also be performed through a single port. At least one of the ports can also be used for communicating with a recording head portion of the cartridge.
摘要:
A recording apparatus and method of controlling the apparatus includes a recording head for ejecting liquid ink for recording by heat energization, a temperature change rate detecting device for detecting the temperature change rate of the recording head in a normal state, a storage device for storing the temperature change rate information, a determining device for determining the average ejection duty cycle from recording data, an obtaining device for obtaining information relating the temperature change rate in the normal state to the average ejection duty cycle, and a discriminating device for discriminating an abnormality of the recording head determined by the information relating the temperature change rate in the normal state to the average ejection duty cycle, and the temperature change rate detected by the temperature change rate detecting device.
摘要:
An ink jet recording apparatus includes a liquid passage for ejection of ink; a liquid chamber for supplying ink to the passage; a device for mounting the recording head on the ink jet recording apparatus at an angle not more than 45 degrees relative to the horizontal plane; wherein the chamber has an internal surface which is slanted in a direction from an ink inlet thereof toward the liquid passage at the angle of 5-40 degrees relative to an extension of the liquid passage.