Xi'an Institute of Optics and Precision Mechanics,CAS
Laser driver | |
其他题名 | Laser driver |
KAWANA TAKASHI; SAITO TETSUO; MANO HIROSHI; KASHIWABARA ATSUSHI | |
1991-10-18 | |
专利权人 | CANON INC |
公开日期 | 1991-10-18 |
授权国家 | 日本 |
专利类型 | 发明申请 |
摘要 | PURPOSE:To perform a dense and pale printing of high quality by providing a plurality of constant-current generating means, controlling quantities of lights at respective light quantity levels, and then emitting lasers at several levels of light quantities by a plurality of image signals. CONSTITUTION:A laser forcible lighting signal LDON1 is set to 'L' simultaneously upon starting of an APC, a latch input data 20 is incrementally increased to gradually raise the voltage of the output signal APC1 of a D/A converter 4, thereby increasing a laser driving current Il When the laser output exceeds a specific value of low quantity of light, a latch circuit 2 latches the input data of the converter 4, and sets a laser forcible lighting signal LDON2 to 'L' while a laser current is flowing to a semiconductor laser 10. The input data of the circuit 2 is incrementally increased to raise a laser driving current Il2, and when the quantity of the laser reaches a specific value of high quantity of light, the input data of a D/A converter 5 is latched to a latch circuit 3. Thereafter, video signals VIDEO1, VIDEO2 are input, and the laser 10 varies a density while varying the quantity of light to high or low to print it. |
其他摘要 | 用途:通过提供多个恒定电流发生装置,控制各个光量水平的光量,然后通过多个图像信号发射几个光量水平的激光,进行高质量的密集和苍白打印。组成:激光强制发光信号LDON1在APC启动时同时设置为'L',闩锁输入数据20逐渐增加,逐渐提高D / A转换器4的输出信号APC1的电压,从而增加激光驱动电流Il1。当激光输出超过低光量的特定值时,锁存电路2锁存转换器4的输入数据,并且在激光电流流向半导体激光器10的同时将激光强制点亮信号LDON2设置为“L”。电路2的输入数据逐渐增加以提高激光器驱动电流Il2,并且当激光器的量达到高光量的特定值时,D / A转换器5的输入数据被锁存到此后,输入视频信号VIDEO1,VIDEO2,并且激光器10改变密度,同时将光量改变为高或低以打印它。 |
申请日期 | 1990-02-09 |
专利号 | JP1991234075A |
专利状态 | 失效 |
申请号 | JP1990030655 |
公开(公告)号 | JP1991234075A |
IPC 分类号 | B41J2/44 | G02F1/01 | G03G15/04 | H01S5/068 | H04N1/23 | H01S3/133 |
专利代理人 | - |
代理机构 | - |
文献类型 | 专利 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/69095 |
专题 | 半导体激光器专利数据库 |
作者单位 | CANON INC |
推荐引用方式 GB/T 7714 | KAWANA TAKASHI,SAITO TETSUO,MANO HIROSHI,et al. Laser driver. JP1991234075A[P]. 1991-10-18. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
JP1991234075A.PDF(313KB) | 专利 | 开放获取 | CC BY-NC-SA | 请求全文 |
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