发明名称 |
Image forming apparatus and defective nozzle detecting method |
摘要 |
An image forming apparatus that forms an image on a recording sheet by discharging ink droplets from nozzles provided in a print head on the recording sheet includes: a light emitting unit that generates detection light intersecting a discharge path of the ink droplets; a discharge signal output unit that outputs a discharge signal used to discharge the ink droplets from a detection target nozzle; a first light receiving unit that receives scattered light generated by irradiating the ink droplets with the detection light and outputs a first detection signal; a second light receiving unit that receives the detection light having passed through the discharge path of the ink droplets without irradiating the ink droplets and outputs a second detection signal; a determination unit that determines whether the detection target nozzle is a defective nozzle; and a correction unit that corrects a determination result of the determination unit. |
申请公布号 |
US8714689(B2) |
申请公布日期 |
2014.05.06 |
申请号 |
US201113305214 |
申请日期 |
2011.11.28 |
申请人 |
ABE KIMITO;RICOH COMPANY, LIMITED |
发明人 |
ABE KIMITO |
分类号 |
B41J29/393;B41J2/045;B41J2/21 |
主分类号 |
B41J29/393 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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