发明公开
EP0925941A3 Method of testing light-emitting condition of vacuum fluorescent print head
有权
一种用于测试真空荧光打印头的光发射状态的方法
- 专利标题: Method of testing light-emitting condition of vacuum fluorescent print head
- 专利标题(中): 一种用于测试真空荧光打印头的光发射状态的方法
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申请号: EP98124429.6申请日: 1998-12-22
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公开(公告)号: EP0925941A3公开(公告)日: 2000-12-27
- 发明人: Nakamura, Shigetaka , Morishima, Hiromichi
- 申请人: Noritsu Koki Co., Ltd.
- 申请人地址: 579-1 Umehara Wakayama-shi, Wakayama-ken 640-8550 JP
- 专利权人: Noritsu Koki Co., Ltd.
- 当前专利权人: Noritsu Koki Co., Ltd.
- 当前专利权人地址: 579-1 Umehara Wakayama-shi, Wakayama-ken 640-8550 JP
- 代理机构: Blumenröhr, Dietrich Dipl.-Ing.
- 优先权: JP36115797 19971226
- 主分类号: B41J2/44
- IPC分类号: B41J2/44
摘要:
A method of testing light-emitting condition of a vacuum florescent print head is disclosed. The print head (60) is of a type having a plurality of luminous elements (32,33,34) disposed along a main scanning direction for forming dots in the form of a linear column on a print paper (3), and the print head (60) is movable in a sub-scanning direction relative to the print paper. The method includes a first step of exposing and forming on a print paper a plurality of linear dot columns, each column consisting of a plurality of dots (D) arranged along a main scanning direction with a predetermined space therebetween, the plurality of dot columns being juxtaposed with each other with a predetermined space therebetween; a second step of determining density of each dot formed and exposed by the first step one column after another by using a scanner (80); and a third step of outputting the determined densities of the respective dots as light-emitting amounts of a plurality of luminous elements forming the linear dot column.
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