METHOD OF MANUFACTURING PRINT HEAD, PRINT HEAD AND IMAGE FORMING APPARATUS

摘要

A method of manufacturing a print head includes a first step of finding first light quantity related data showing a light quantity in a light spot formed by lighting up each of light-emitting units by a driving unit by using a first threshold, a second step of finding first magnitude related data showing a magnitude in the light spot formed by lighting up the light-emitting unit by the driving unit by using a second threshold, a third step of finding first ratio data showing a ratio between the first light quantity related data and the first magnitude related data, a fourth step of finding light quantity correction data to the light-emitting unit forming the light spot as a target by using the first ratio data, and a fifth step of retaining the found light quantity correction data to the print head.

主权项

1. A method of manufacturing a print head that includes a substrate on which a plurality of light-emitting units are provided to be arrayed, and a driving unit that drives each of the light-emitting units, wherein a light spot is formed on a field by each of the light-emitting units, comprising:
a first step of finding first light quantity related data showing a light quantity in the light spot formed by lighting up the light-emitting unit by the driving unit by using a first threshold; a second step of finding first magnitude related data showing a magnitude in the light spot formed by lighting up the light-emitting unit by the driving unit by using a second threshold; a third step of finding first ratio data showing a ratio between the first light quantity related data and the first magnitude related data; and a fourth step of finding light quantity correction data to the light-emitting unit forming the light spot as a target by using the first ratio data, and a fifth step of retaining the found light quantity correction data to the print head.