| US 7,600,839 B2 | ||
| Recording apparatus which can prevent block switching noises | ||
| Yuichiro Akama, Kawasaki (Japan); Kimiyuki Hayasaki, Yokohama (Japan); Masahiko Ogawa, Hino (Japan); and Yasunori Takei, Meguro-ku (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Dec. 11, 2006, as Appl. No. 11/609,130. | ||
| Claims priority of application No. 2005-372521 (JP), filed on Dec. 26, 2005. | ||
| Prior Publication US 2007/0153036 A1, Jul. 05, 2007 | ||
| Int. Cl. B41J 29/38 (2006.01) | ||
| U.S. Cl. 347—12 | 6 Claims |
| 1. A recording head comprising:
a plurality of recording elements;
a block selection unit configured to divide the recording elements into blocks, each of which has a plurality of the recording
elements, and to select a block according to a time-divisional driving signal used to perform time-divisional driving in units
of the blocks;
an input unit configured to input a pulse width regulating signal used to regulate a width of a driving pulse signal to be
applied to each of the recording elements;
a first common signal line configured to transfer a block driving signal output from the block selection unit to a recording
element included in a block;
a second common signal line configured to transfer the pulse width regulating signal input by the input unit to the plurality
of recording elements; and
a first delay circuit disposed on the first common signal line and a second delay circuit disposed on the second common signal
line, wherein the first and second delay circuits are configured to delay the block driving signal and the pulse width regulating
signal, respectively.
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