| 摘要 |
PROBLEM TO BE SOLVED: To miniaturize a device size and at the same time reduce the device cost. SOLUTION: This printer is provided with pin tractors 21 provided in the front/rear of a transcription device 17 of the tractor part 3, a PF motor 26 normally and inversely rotating the pin tractors 21, a toner mark sensor 22 attached to a guide cover 27 pressing a paper sheet 1 so as not detached from the pin, a print density control part 72 using the toner mark sensor 22 for reading the density of the toner mark printed on the paper sheet 1 during printing and controlling the image density based on its output, and an automatic loading control part 71 using the toner mark sensor 22 for detecting the presence/absence of the paper sheet 1 in setting the paper sheet. |
