Ink-jet recording apparatus
First Claim
1. An ink-jet recording apparatus having a recording head that is mounted to a reciprocating carriage and that receives supply of ink, the recording apparatus comprising:
- an ink storage chamber into which ink is supplied from an outside of the ink storage chamber;
a float member movable to follow ink level of ink stored in the ink storage chamber;
an indicator provided to the float member; and
at least two detection systems provided opposite the indicator and arranged vertically, wherein both of the two detection systems detect the indicator when an amount of the ink stored in the ink storage chamber is maintained within an appropriate range, and wherein at least three statuses of ink level are detected based on signals from the detection systems.
1 Assignment
0 Petitions
Accused Products
Abstract
An ink storage chamber has an indicator formed from magnetic material. A float member whose upper position is limited is housed in the ink storage chamber. Two magnetic-field detection system are provided at a position on the exterior of a sub-tank at which the detection system can detect a magnetic flux of the indicator simultaneously, such that the longitudinal direction of the detection system is oriented vertically with a specified ink level of the sub-tank sandwiched between the detection system. On the basis of signals output from the magnetic-field detection system, it is determined whether the ink level is in any one of an excessively low ink level state, a state in which injection of ink must be started, a state in which injection of ink must be stopped, and an excessively supplied state. Thus, an ink level in the sub-tank can be controlled within a specific range without involvement of an undesired increase in the number of sensors.
102 Citations
16 Claims
-
1. An ink-jet recording apparatus having a recording head that is mounted to a reciprocating carriage and that receives supply of ink, the recording apparatus comprising:
-
an ink storage chamber into which ink is supplied from an outside of the ink storage chamber;
a float member movable to follow ink level of ink stored in the ink storage chamber;
an indicator provided to the float member; and
at least two detection systems provided opposite the indicator and arranged vertically, wherein both of the two detection systems detect the indicator when an amount of the ink stored in the ink storage chamber is maintained within an appropriate range, and wherein at least three statuses of ink level are detected based on signals from the detection systems. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
Specification