摘要:
A liquid container for a liquid jet recording apparatus comprises a first chamber containing negative pressure producing material and having a liquid outlet connectable to a liquid jet head to supply liquid from the container to the liquid jet head and an air vent for allowing ambient air into the container, wherein the liquid outlet is provided in a bottom portion of the first chamber. A second chamber communicates with the first chamber by a communication path and is substantially hermetically sealed. A wall extends upwardly from the communication path of the first chamber. An ambient air introducing path is provided for between the wall and the negative pressure producing material extending from a point partly up the wall toward the communication path for introducing ambient air into the second chamber.
摘要:
A liquid container for a liquid jet recording apparatus includes a first chamber containing negative pressure producing material and having a liquid outlet. At a lower part of the cartridge and contactable to the liquid jet head, the liquid container supplies liquid from the cartridge to the liquid jet head. An air vent allows ambient air into the cartridge. A second chamber communicates with the first chamber by means of a communication part, except for which the second chamber is substantially hermetically sealed. The second chamber is disposed at the lower part of the cartridge and provides a liquid reservoir for the first chamber. Ambient air is introduced through an air path substantially free of negative pressure producing material, having an inlet in the first chamber separated from the air vent by the negative pressure producing material, and an outlet arranged to be lower than the inlet during use of the cartridge to enable air to be supplied to the second chamber through the negative pressure producing material and the air path as liquid is withdrawn from the liquid outlet.
摘要:
An ink jet recording apparatus including a recording head for performing print recording by ejecting ink from an ejection orifice by thermal energy; temperature sensors provided in the recording head; a temperature calculation device for calculating a temperature change of the recording head in a unit time as a discrete value on the basis of the supply of energy input to the recording head, and for calculating the temperature change of the recording head by accumulating the discrete value in the unit time; a temperature presuming device for presuming a head temperature by both a calculated value of the temperature change and an adopted base value of the head temperature; a detection device for detecting a difference between the head presumed temperature and a detected temperature sensed by the temperature sensors; an update device for updating the adopted base value of the head temperature by the difference; and a control device for controlling ejection of the ink to be stabilized in accordance with the head presumed temperature.
摘要:
A method of exchanging a waste ink pack that stores waste ink discharged by repeated ink clearing operations performed on an ink jet head involves comparing a cumulative number of times the ink clearing operation have been performed using a particular waste ink pack with upper limit data based on the capacity of the waste ink pack. When the cumulative number reaches the upper limit data, an indication is provided that the waste ink pack should be exchanged for a new one, after which exchange a previous instruction to a recovery device to perform an ink clearing operation is performed. Ink clearing operations are then repeated with that waste ink pack until the number of such operations again reaches the upper limit data.
摘要:
This invention relates to an ink jet recording apparatus with a support member for supporting an ink jet recording head for effecting recording by ink discharge onto a recording material, comprising: recording material transport means for transporting the recording material from a feeding position through a recording position to a discharge position; and recovery means for maintaining and restoring the ink discharge state of said ink jet recording head. The driving source for driving the recording material transport means or support member is also used for driving the recovery means, and, when the power supply to the apparatus is turned on, the initial operations of at least the recording material transport means and the recovery means are conducted utilizing a single sensor.
摘要:
A recording head having a plurality of ink discharge element lines arranged thereon is moved in a direction different from the direction of arrangement of the ink discharge elements to conduct a main scan, and at the end of the main scan, a recording medium is moved by a predetermined width in a direction different from the main scan direction to record an image. A record area of the recording head is divided into a plurality (n) of areas and each unit image area on the recording medium is main scanned n times by using the n divided areas of the recording head and thinned images with a print factor of 1/n are sequentially recorded to complete the record of the unit image area. The print factor for the pixels in the boundary area of adjacent unit image areas is lower than the print factor to the entire unit image area in at least one of the n main scans. Thus, the number of pixels recorded by the same main scan in the boundary area is increased. A high quality image without a joint stripe is attained even for a recording medium having a relatively high ink absorption speed.
摘要:
An ink jet cartridge, removably mountable on an ink jet recording apparatus, includes a recording head and an ink tank containing recording liquid. The head and cartridge are removably connected through an engaging member provided on the ink tank and an engaged member provided on the recording head. When the ink tank and the recording head are not combined, a protecting cover provided on the recording head can protect sensitive components of the recording head, while partially overlapping the side of the link tank and being integrated therewith when the recording head and ink tank are combined.
摘要:
An ink jet recording apparatus includes ink ejecting outlets for ejecting ink, an ink container for containing the ink to be supplied to the ejecting outlets, ink supply passage for supplying the ink from the container to the ejecting outlets, a recovery system for forcedly ejecting the ink through the ejecting outlets. The recovery system repeats the forced ejecting action, and a quantity of the ink ejected by one forced ejecting action is larger than an inside volume of the ink supply passage.
摘要:
An ink jet head cartridge includes a recording head for ejecting ink; an ink container for containing the ink to be supplied to the recording head; an ink supply port for supplying the ink from the container to the head; a porous ink absorbing material disposed in the container and having a ring shape with a central opening; and an engaging portion engaging with the central opening wherein the absorbing material has a higher density proximate to the supply port than proximate to the engaging portion.
摘要:
An ink jet recording apparatus includes a recording head including a liquid passage having an ejection energy generating element for generating energy for ejecting ink, an ejection outlet defining member having an ejection outlet communicating with the liquid passage, the ejecting outlet defining member having a surface from which the ink is ejected through the ejection outlet, and a member covering at least a part of the surface away from the ejection outlet; a wiping member for contacting the surface to wipe it; a driver for imparting relative movement between the surface and the wiping member to wipe the surface; and a controller for providing a relatively low speed of the relative movement at least when the surface being wiped by the wiping member.