Image input apparatus

• US 4,743,972 A
• Filed: 06/30/1987
• Issued: 05/10/1988
• Est. Priority Date: 06/30/1986
• Status: Expired due to Fees

• Current Assignee: Brother Kogyo Kabushiki Kaisha (Brother Industries Limited)
• Original Assignee: Brother Kogyo Kabushiki Kaisha (Brother Industries Limited)
• Inventors: Makihara, Yachiyo
• Primary Examiner(s): Lev, Robert
• Application Number:
  US07/068,440
• Time in Patent Office: 315 Days
• Field of Search: 358/213.11, 358/225, 358/236, 358/211, 358/210, 358/209, 358/55, 358/41, 358/909
• US Class Current: 358/482
• CPC Class Codes: G02F 1/132 Thermal activation of liquid crystals exhibiting a thermo-optic effect
• CPC Class Codes: G06F 3/002 Specific input/output arrangements not covered by G06F3/01 - G06F3/16 other optical apparatus G02B27/00
• CPC Class Codes: H04N 1/195 the array comprising a two-dimensional array or a combination of two-dimensional arrays

Abstract

Disclosed is an image input apparatus which comprises a liquid crystal panel disposed under an original mount and provided with a liquid crystal and a photo absorption agent sealed therein, electrodes arranged in a matrix on each of upper and lower opposite surfaces of the liquid crystal panel, and a light source disposed above the original mount so as to send light onto an original mounted on the original mount so that light from the original is projected onto the crystal panel so as to make the liquid crystal panel to store picture image information on the original as a change in phase of the liquid crystal, the picture image information stored in the liquid crystal panel being electrically read out by the electrodes. Preferably, the liquid crystal panel is further provided dichromatic coloring matters sealed therein.

Claims

1. An image input apparatus comprising:

an original mount;

a liquid crystal panel disposed under said original mount, said liquid crystal panel having a liquid crystal and a photo absorption agent sealed in said liquid crystal panel;

electrodes arranged in a matrix on each of upper and lower opposite surfaces of said liquid crystal panel; and

a light source disposed above said original mount so as to emit light onto an original mounted on said original mount so that light from said original is projected onto said crystal panel so as to make said liquid crystal panel to store picture image information on said original as a change in phase of said liquid crystal, said picture image information stored in said liquid crystal panel being electrically read out by said electrodes.

2. An image input apparatus according to claim 1, in which dichromatic coloring matters are further sealed in said crystal panel.

3. An image input apparatus according to claim 1, in which said liquid crystal panel utilizing a thermoelectricity optical effect.

4. An image input apparatus according to claim 1, in which said photo absorption agent is infrared absorption agent and said light source emits infrared rays.