US 12,257,832 B2
Print head and liquid ejecting apparatus
Atsushi Shimura, Nagano (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Feb. 17, 2023, as Appl. No. 18/170,611.
Claims priority of application No. 2022-024407 (JP), filed on Feb. 21, 2022.
Prior Publication US 2023/0264469 A1, Aug. 24, 2023
Int. Cl. B41J 2/045 (2006.01); B41J 2/01 (2006.01); B41J 2/14 (2006.01); B41J 29/393 (2006.01); B41J 2/165 (2006.01)
CPC B41J 2/04536 (2013.01) [B41J 2/01 (2013.01); B41J 2/04501 (2013.01); B41J 2/0451 (2013.01); B41J 2/04541 (2013.01); B41J 2/04555 (2013.01); B41J 2/04571 (2013.01); B41J 2/04588 (2013.01); B41J 2/04596 (2013.01); B41J 2/14 (2013.01); B41J 29/393 (2013.01); B41J 2/04581 (2013.01); B41J 2/14233 (2013.01); B41J 2002/14241 (2013.01); B41J 2002/14354 (2013.01); B41J 2002/14419 (2013.01); B41J 2002/14491 (2013.01); B41J 2/16535 (2013.01); B41J 2029/3937 (2013.01); B41J 2202/19 (2013.01); B41J 2202/20 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A print head ejecting a liquid with respect to a medium and assembled to a liquid ejecting apparatus, the print head comprising:
an ejecting portion ejecting the liquid by receiving a drive signal;
an electrically erasable non-volatile memory; and
a wireless communication module that wirelessly communicates with an outside located outside of the print head, wherein
history information changing in accordance with an operation state of the print head is stored in the non-volatile memory, and
the wireless communication module
receives, as a request of the history information, a first wireless communication signal from the outside, and
in response to receiving the first wireless communication signal from the outside, generates a second wireless communication signal including the history information input from the electrically erasable non-volatile memory, and wirelessly transmits the second wireless communication signal to the outside.
 
11. A liquid ejecting apparatus comprising:
a drive signal output circuit outputting a drive signal; and
a print head ejecting a liquid with respect to a medium and assembled to the liquid ejecting apparatus, wherein
the print head includes
an ejecting portion ejecting the liquid by receiving the drive signal,
an electrically erasable non-volatile memory, and
a wireless communication module that wirelessly communicates with an outside located outside of the liquid ejecting apparatus,
history information changing in accordance with an operation state of the print head is stored in the non-volatile memory, and
the wireless communication module
receives, as a request of the history information, a first wireless communication signal from the outside, and
in response to receiving the first wireless communication signal from the outside, generates a second wireless communication signal including the history information input from the electrically erasable non-volatile memory, and wirelessly transmits the second wireless communication signal to the outside.