| Patent application number | Description | Published |
|---|
| 20080240611 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus includes an expansion unit to expand image data to first matrix data including a plurality of rows and columns, a first mask unit to mask the first matrix data by performing a logical operation on the first matrix data and a mask pattern, a second mask unit to select any one of first processing to thoroughly mask a unit area of the first matrix data and second processing to mask a unit area of the first matrix data by using the first mask unit, with respect to each mask unit area by using third matrix data including a plurality of mask unit areas that is formed of the same number of rows and columns as the mask pattern, and an image formation unit to form an image by modulating the first matrix data that is masked by the second mask unit into an optical writing signal. | 10-02-2008 |
| 20090238613 | BELT DRIVE CONTROL DEVICE, BELT DEVICE, IMAGE FORMING APPARATUS, AND BELT DRIVE CONTROL METHOD - A belt drive control device includes: first and second detection devices which detect the angular displacement or velocity of a driven rotary member and the angular displacement or velocity of a drive rotary member, respectively; an extraction device which extracts, from the difference between the detection results of the first and second detection devices, the amplitude and phase of a variation component due to belt thickness variation; a control device which controls the rotation of the drive rotary member in accordance with the extracted amplitude and phase; first and second holding devices which hold the extracted amplitude and phase and normal ranges of the amplitude and phase, respectively; and first and second feedback devices which feed back the amplitude and phase to the rotation control, and performs feedback by using a substitution value for the amplitude or phase if the amplitude or phase is out of the normal range, respectively. | 09-24-2009 |
| Patent application number | Description | Published |
|---|
| 20080198425 | IMAGE FORMING APPARATUS - In an image forming apparatus, an energy converting unit receives light from an optical source and converts the light into electric power, and an electrical storage unit stores therein the electric power. The energy converting unit is arranged in such a manner that a relative position of the energy converting unit to the optical source is always constant when a reading unit is reading an image. | 08-21-2008 |
| 20080259071 | INFORMATION DISPLAY DEVICE, INFORMATION DISPLAYING METHOD, AND COMPUTER PROGRAM PRODUCT - A display control unit performs a control of displaying first image information on a display unit. An electric-power supply unit converts thermal energy generated from a body temperature of a user into electric power upon the user contacting the electric-power supply unit, and supplies the electric power to the display control unit. A determination unit determines whether the user is in contact with the electric-power supply unit. When it is determined that the user is not in contact with the electric-power supply unit, the display control unit performs a control of rewriting the first image information displayed on the display unit with second image information. | 10-23-2008 |
| 20080292351 | IMAGE FORMING APPARATUS AND ELECTRIC APPLIANCE - A thermoelectric conversion element converts thermal energy of a user into electric power. A holding unit holds the electric power converted by the thermoelectric conversion element, and outputs the electric power. A switching unit switches between a first mode in which electric power is supplied to all units of an image forming apparatus and a second mode in which electric power is supplied to a part of units of the image forming apparatus. When the image forming apparatus is in the second mode, the switching unit switches from the second mode to the first mode upon receiving the electric power output from the holding unit. | 11-27-2008 |
| 20090072781 | POWER SUPPLY DEVICE, SCANNER POWER SUPPLY DEVICE, AND IMAGE FORMING APPARATUS - A power supply device accumulates charges generated by a photovoltaic unit. The power supply device includes a first capacitor having a first capacitance, in which the charges generated by the photovoltaic unit are charged; a second capacitor having a second capacitance that is larger than the first capacitance; and a switching unit that switches between a first connection of connecting the photovoltaic unit to the first capacitor and a second connection of connecting the first capacitor to the second capacitor. | 03-19-2009 |
| 20090091959 | POWER SUPPLY UNIT, IMAGE FORMING APPARATUS, AND METHOD FOR CONTROLLING POWER SUPPLY - In an image forming apparatus, a monitoring unit monitors whether a returning factor required to switch an operational state of the apparatus from a power-saving mode to an operating mode is generated, an antenna unit receives external electrical wave, a power generation unit generates electricity from the received electrical wave and supplies the electricity to the monitoring unit, and a controlling unit switches the operational state of the apparatus from the power-saving mode to the operating mode when the monitoring unit detects generation of a returning factor. | 04-09-2009 |
