Printer
AssigneeFuji Photo Film Co., Ltd.
InventorsHisashi Enomoto, Kouichi Hirasawa
Life of this patent
Estimating the term…
Abstract
Illumination adjustment of LEDs is carried out prior to printing to a color thermosensitive recording paper with each thermosensitive coloring layer of yellow, magenta, and cyan. A light control circuit lights on the LEDs by one line printing period upon printing to each thermosensitive coloring layer, and makes CCD line sensors use its reflected light to image lateral edge of the color thermosensitive recording paper. Consequently, the output signal from the CCD line sensors is set within the linearity.
Claims13
A printer having a recording head with plural recording elements being arranged in a main scanning direction, for recording an image line by line while conveying a recording paper in a sub scanning direction, said printer comprising:
- a light source for emitting inspection light to at least one lateral edge portion of said recording paper, a sensor for receiving said inspection light, said sensor outputting a signal to detect a lateral edge of said recording paper in said main scanning direction;
- and
- a light control circuit for controlling illumination of said inspection light irradiated from said light source based on an output signal level of said sensor.
A printer having a thermal head with plural recording elements being arranged in a main scanning direction, for recording an image to each of plural thermosensitive coloring layers line by line while conveying a thermosensitive recording paper in a sub scanning direction, said printer comprising:
- a light source for irradiating inspection light to at least one lateral edge of said thermosensitive recording paper;
- a sensor for receiving said detection light, said sensor outputting a signal to detect a lateral edge of said thermosensitive recording paper in said main scanning direction;
- and
- a light control circuit for controlling illumination of said inspection light irradiated from said light source based on an output signal level of said sensor.
Dependencies are inferred from the claim text.