发明名称 |
Optical printer head with integrated drive circuitry |
摘要 |
An optical printer head with a plurality of light-emitting devices arranged in two dimensions is capable of providing a desired amount of exposure using light-emitting devices having even small luminance, ease of corrections to a sensitivity of a photosensitive body and to a positional displacement of an object to be printed, performing printing on multiple gray scales and implementing high density and miniaturization. The optical printer head is so configured that a picture element array including picture elements containing light-emitting devices arranged in line and string directions in two dimensions, a horizontal scanning circuit to feed data signals to each picture element string in the picture element array and a vertical scanning circuit to sequentially select and activate each picture element in the picture element array are formed on a same insulating substrate to support production of the above effects. The luminance of the picture elements is also made variable by use of a plurality of light-emitting devices and/or variable drive for each picture element to enhance the continuity of gray scale achieved.
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申请公布号 |
US6750895(B1) |
申请公布日期 |
2004.06.15 |
申请号 |
US20000670596 |
申请日期 |
2000.09.29 |
申请人 |
NEC CORPORATION |
发明人 |
OTOSE TOMOHIKO;ASADA HIDEKI;UEZONO TSUTOMU;ODA ATSUSHI;TOGUCHI SATORU |
分类号 |
H04N1/036;B41J2/44;B41J2/45;B41J2/455;B41J2/52;H04N1/19;(IPC1-7):B41J2/45;B41J2/47 |
主分类号 |
H04N1/036 |
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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