IMAGE FORMING DEVICE AND DRIVING METHOD THEREOF

• Main Authors: INOUE YUUJI, YAMAKAWA TADASHI, SATOMURA HIROSHI, KOMATA TOMOJI, OSADA YOSHIYUKI, INOUE YUTAKA
• Format: Patent
• Language: English
• Published: 11.11.1985
• Subjects: CALCULATING; CINEMATOGRAPHY; COMPUTING; CORRECTION OF TYPOGRAPHICAL ERRORS; COUNTING; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; FREQUENCY-CHANGING; HANDLING RECORD CARRIERS; HOLOGRAPHY; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; MAGNETOGRAPHY; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PERFORMING OPERATIONS; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; PRESENTATION OF DATA; PRINTING; RECOGNITION OF DATA; RECORD CARRIERS; SELECTIVE PRINTING MECHANISMS; STAMPS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING; TYPEWRITERS

PURPOSE:To increase number of time division without decreasing an image forming speed by disposing microshutter group which sandwiches a liquid crystal between a substrate provided with plural segment electrodes and a substrate provided with a common electrode into the optical path for exposure. CONSTITUTION:An FET formed on the substrate 301 is provided with a gate electrode 302 connected to a gate line, a source electrode 303 connected to a data line and a drain electrode 304 for taking out a data signal. The electrode 304 is connected to the segment electrodes 307 forming a shutter part. The resistance of an a-Si film 305 decreases and the electrodes 303 and 304 are made conducting when a scanning signal is impressed to the electrode 302. The liquid crystal element is formed by sandwiching the N-P type liquid crystal between the substrate 301 and the counter substrate 311 in the orientation state and a transparent common electrode 312, a light shielding film 314 and an orientation control film 315 are provided on the substrate 311. The liquid crystal shutter array consisting of such element is disposed in the optical path for exposure via orthogonal polarizing plates 319, 320, by which the number of time division is increased without decreasing the image forming speed.