1.1 ISO 12222:2017规定了16毫米、35毫米和65毫米电影胶片上机器可读识别号的位置和尺寸。这些数字旨在成为潜像密钥数字的机器可读版本。ISO 12222:2017还规定了用于这些机器可读数字的编码格式，以及扫描仪的扫描区域和光谱特性。 1.2 ISO 12222:2017还规定了用于原始摄影或中间印刷的16毫米、35毫米和65毫米电影胶片上的人类可读识别（键）号的位置、尺寸和内容，其中还包括1.1中描述的机器可读键号。 请注意，这些数字通常在制造时暴露在胶片上。 1.3 ISO 12222:2017进一步规定了可用于可选的制造商特定膜类型识别信息的区域。 1.4 ISO 12222:2017还规定了胶片上不得由胶片制造商曝光的区域，从而使其可用于客户数据记录。 1.5最后，ISO 12222:2017规定了35毫米和65毫米胶片的可选框架线索引标记。

1.1 ISO 12222:2017 specifies the position and dimensions of machine-readable identification numbers on 16 mm, 35 mm and 65 mm motion-picture film. These numbers are intended to be a machine-readable version of the latent image key number. ISO 12222:2017 also specifies the encoding format to be used for these machine-readable numbers, as well as the area scanned and the spectral characteristics of the scanner. 1.2 ISO 12222:2017 also specifies the position, dimensions and content of human-readable identification (key) numbers for use on 16 mm, 35 mm and 65 mm motion-picture films intended for original photography or intermediate printing which also include the machine-readable key number described in 1.1. NOTE These numbers normally are exposed onto the film at the time of manufacture. 1.3 ISO 12222:2017 further specifies an area that may be used for optional manufacturer-specific film-type identification information. 1.4 ISO 12222:2017 also specifies an area on the film which is not to be exposed by the film manufacturer, thus leaving it available for customer data recording. 1.5 Finally, ISO 12222:2017 specifies an optional frame line index mark for 35 mm and 65 mm film.