Title:
ELEMENT SUBSTRATE, PRINTING HEAD, HEAD CARTRIDGE AND PRINTING APPARATUS
Document Type and Number:
Japanese Patent JP2008162272
Kind Code:
A
Abstract:
To provide an element substrate capable of checking an electrical connection state prior to a failure of a printing head.
The element substrate which can be attached to and detached from a printing apparatus comprises a plurality of printing elements, a logic circuit for controlling the printing elements, a voltage applying terminal for applying driving voltage in order to drive the printing elements and a connection-state output circuit. The logic circuit is driven at a voltage lower than the driving voltage. The connection-state output circuit outputs a signal which reflects an electrical connection state between the printing head and the printing apparatus based on the driving voltage.
Inventors:
IMANAKA YOSHIYUKI
TAKEUCHI SOUTA
HATSUI TAKUYA
YAMAGUCHI TAKAAKI
MATSUI TAKAHIRO
KUBO KOSUKE
TAKEUCHI SOUTA
HATSUI TAKUYA
YAMAGUCHI TAKAAKI
MATSUI TAKAHIRO
KUBO KOSUKE
Application Number:
JP2007312662A
Publication Date:
July 17, 2008
Filing Date:
December 03, 2007
Export Citation:
Assignee:
CANON KK
International Classes:
B41J2/045; B41J2/01; B41J2/055
Domestic Patent References:
| JPH08252909A | 1996-10-01 | |||
| JPH1058692A | 1998-03-03 | |||
| JP2001063023A | 2001-03-13 | |||
| JP2005169866A | 2005-06-30 |
Attorney, Agent or Firm:
Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Nagakawa Yukimitsu
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Nagakawa Yukimitsu