发明名称 Inkjet printing apparatus which determines residual ink amount, and method of detecting ink
摘要 A printing apparatus which can detect remaining ink with high precision regardless of trembles of ink surface in an ink tank caused by various factors such as scanning speed of a carriage, scanning width, impact of the carriage at the time of reversing the carriage scanning direction and the like, and can perform printing by efficiently utilizing the remaining ink, and a facsimile apparatus using the above printing apparatus. According to the apparatus, when a CPU controls print operation, the CPU dynamically changes the threshold value as a determination reference, utilized to detect remaining ink on the basis of an output current of a reflection type photosensor, in accordance with the scanning speed of carriage movement, the scanning width, and the stop period for reversing the scanning direction.
申请公布号 US6012794(A) 申请公布日期 2000.01.11
申请号 US19970819814 申请日期 1997.03.18
申请人 CANON KABUSHIKI KAISHA 发明人 NAKANO, YUJI;YOKOYAMA, MINORU;IWATA, NAOHIRO;KAWASHIMA, SHUNJI;TERASHIMA, HIDEYUKI
分类号 B41J2/125;B41J2/175;B41J3/46;G06F3/12;H04N1/00;(IPC1-7):B41J2/195 主分类号 B41J2/125
代理机构 代理人
主权项
地址