Image reading device with voltage biases

Details Image reading device with voltage biases Image reading device with voltage biases

1990-11-14

1992-03-17

Mintel, William

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

357 32, 357 58, 357 2, 250211R, 250211J, 2505781, H01L 2714

Patent

active

050973045

ABSTRACT:
An image reading device has photo-sensor units arranged in the form of an array constituting a line sensor. Each sensor unit includes a light-shielding layer formed on a light-transmitting substrate, an insulating layer formed on the light-shielding layer, a semiconductor layer disposed on the insulating layer, and a pair of upper electrodes provided on the semiconductor layer and spaced from each other. The space between the upper electrodes constitutes a light-receiving window through which the semiconductor layer receives light applied from the reverse side of the substrate onto the surface of an image-carrying original and reflected by the original. Thus, the semiconductor layer produces an electric signal representing the read image. The light-shielding layer is made of an electrically conductive material such as a metal. A voltage application circuit is provided for applying to the light-shielding electrode a voltage of a level which is lower than the levels of voltages applied to the pair of upper electrodes. The level of the voltage may be varied along the length of the array of the photo-sensor units.

REFERENCES:
patent: 4291326 (1981-09-01), Higuchi et al.
patent: 4405915 (1983-09-01), Komatsu et al.
patent: 4621275 (1986-11-01), Ueno et al.
patent: 4650984 (1987-03-01), Furushima et al.
patent: 4672221 (1987-06-01), Saito et al.
patent: 4916304 (1990-04-01), Itabashi et al.

Affiliated with

Also associated with

Rating

Image reading device with voltage biases does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image reading device with voltage biases, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image reading device with voltage biases will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1479883