Ink jet recording with head driving condition regulation
AssigneeCanon Kabushiki Kaisha
InventorsAtsushi Arai, Hiromitsu Hirabayashi, Hiroshi Tajika, Noribumi Koitabashi
Life of this patent
Estimating the term…
Abstract
An ink jet recording apparatus provided with an ink jet recording head connected to an ink tank and having ink discharge ports and energy generating members for generating ink discharge energy, in which the head pressure of ink at the discharge ports is detected and the driving condition of the energy generating members is regulated according to the detected head pressure, thus achieving stable ink discharge regardless of the change in a head pressure and improving the efficiency of utilization of ink in the ink tank.
Claims12
An ink jet recording method comprising the steps of:
- providing an ink jet recording apparatus capable of generating a recording signal representing information to be recorded, the apparatus having a support member, and an ink cartridge having an integral ink tank for containing ink and recording head portion for discharging ink contained in the ink tank, wherein the recording head portion includes a discharge port and an energy generating member for discharging ink through the discharge port in response to the recording signal, the ink cartridge being adapted for interchangeable mounting on the support member;
- detecting the head pressure of ink proximate to the discharge port using sensor means, said sensor means producing a head pressure signal;
- and
- adjusting the recording signal to maintain substantially constant discharge of ink in response to the head pressure signal produced by the sensor means.
An ink jet recording apparatus capable of generating a recording signal representing information to be recorded, the apparatus comprising:
- a support member;
- an ink cartridge having an integral ink tank for containing ink and recording head portion for discharging ink in said ink tank, wherein said recording head portion includes a discharge port and an energy generating member for discharging ink through said discharge port in response to the recording signal, said ink cartridge being adapted for interchangeable mounting on said support member;
- sensor means for detecting the head pressure of ink proximate to said discharge port, said sensor means producing a head pressure signal;
- and
- adjusting means for adjusting the recording signal to maintain substantially constant discharge of ink in response to the head pressure signal produced by said sensor means.
Dependencies are inferred from the claim text.