Entries |
Document | Title | Date |
20090028598 | Image Forming Apparatus Capable of Reducing Noise Energy Radiated Outside the Apparatus, Method of Designing Frame, and Computer Readable Medium - In an image forming apparatus, a frame as an interior member is provided so as to oppose an exterior cover as an exterior member for controlling noise from an apparatus main body. An opening that is made up of a number of aperture regions is provided for allowing sound that is radiated to the exterior cover and reflected, to transmit toward the apparatus main body. By providing an opening in the frame or the like, it is possible to reduce noise energy radiated outside the apparatus in a simple manner. | 01-29-2009 |
20100067938 | IMAGE FORMING APPARATUS WITH RECIPROCALLY MOVABLE CARRIAGE - An image forming apparatus includes a reciprocally movable carriage, an image forming unit, a first drive source, a vibration suppressor, and a vibration-suppression controller. The reciprocally movable carriage moves in a main scan direction. The image forming unit is mounted on the carriage. The first drive source moves the carriage. The vibration suppressor suppresses vibration caused by movement of the carriage, and includes a vibration suppression member having a mass smaller than a mass of the carriage and a second drive source independent of the first drive source to move the vibration suppression member. The vibration-suppression controller drives the second drive source to cause the vibration suppressor to perform vibration suppression operation during at least one of an acceleration period and a deceleration period of the carriage, and stops movement of the vibration suppression member during a constant-speed period of the carriage. | 03-18-2010 |
20110064447 | OBTAINING PRESSURE OF AN OPERATING ENVIRONMENT OF A BI-DIRECTIONALLY SCANNING ELECTROGRAPHIC DEVICE FOR IMPLEMENTING CORRECTIONS PER PRESSURE - Methods and apparatus include improving print quality of a bi-directionally scanning electrophotographic (EP) device, such as a laser printer or copy machine, according to ambient pressure in which operated. A moving galvanometer or oscillator reflects a laser beam to create scan lines of a latent image in opposite directions. A damping of the motion occurs per air density implicated by temperature and pressure, where the pressure changes occurring especially from altitude changes. During use, a drive signal, such as a pulse train, moves the galvanometer or oscillator at or near its resonant frequency. Based on a parameter of the drive signal, such as pulse width, the ambient pressure can be made known. In general, a high-pressure environment requires a relatively longer pulse width to resonate the galvanometer or oscillator in comparison to a shorter pulse width for a low-pressure environment. Corrections to print quality stem from the determined ambient pressure. | 03-17-2011 |
20120076526 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image bearing member rotatably supported in a body of the image forming apparatus, and bearing a developer image; a developing device including a developing container, a developing member, and a transporting member, the developing container containing a developer, the developing member disposed so as to oppose the image bearing member, the developing member having thereon the developer in the developing container and rotating to develop a latent image, the transporting member transporting the developer in the developing container while stirring the developer, the developing device being unremovably supported with respect to the body of the image forming apparatus; and a damping member disposed with respect to an axial direction of a rotational axis of the developing member so as to be situated at an end portion of the developing container in the axial direction, and restraining vibration of the developing container. | 03-29-2012 |
20120107008 | PRINTERS AND APPARATUS TO REDUCE EMISSIONS FROM A PRINT SUBSTRATE EXIT PORT - Printers and apparatus to reduce emissions from a print substrate exit port are disclosed. An example apparatus to reduce emissions from a print substrate exit port includes a first member coupled to a hinge adjacent a printer substrate exit port, the first member to substantially cover a travel path of a print substrate in a first position and to pivot from the exit travel path of the print substrate in response to air pressure associated with the print substrate when the print substrate travels through the print substrate exit port. | 05-03-2012 |
20120128386 | IMAGE FORMING APPARATUS CONTROLLING OPERATION NOISE VOLUME - An image forming apparatus has a moving part that operates for forming an image on recording paper. When an instruction to make a transition to a silent mode is input to an input unit, first control is executed so that operation noise of the moving part is reduced. When an instruction to cancel the silent mode is input to the input unit, second control is executed so that the operation noise of the moving part is increased stepwise to return to the state before the first control. | 05-24-2012 |
20130071135 | IMAGE FORMING APPARATUS AND VIBRATION REDUCING MEMBER - An image forming apparatus includes an image forming assembly including an image carrier including a support portion and a developing device including a projecting portion, an image forming apparatus body including a frame and an assembly covering member that rotates between a closed state and an open state and that has a support hole for receiving the support portion and an interference avoiding hole for receiving the projecting portion, and a vibration reducing member. The vibration reducing member reduces vibration of the developing device relative to the image carrier by being fitted in a gap around the projecting portion in the interference avoiding hole in the state in which the projecting portion is inserted in the interference avoiding hole in the assembly covering member in the closed state. The image forming apparatus is operated in the state in which the vibration reducing member is removed. | 03-21-2013 |
20130223870 | IMAGE FORMING APPARATUS - An image forming apparatus, having: a supply unit that forwards a sheet material; a rotor that feeds the sheet material; a memory unit that has stored therein a masking sound for noise; a derivation unit that derives a current position of the sheet material being fed; a determination unit that determines, on the basis of the current position derived by the derivation unit, whether or not the sheet material being fed has reached a second specified location at a predetermined distance upstream from the first specified location; a decision unit that decides output timing and/or output duration for the masking sound in the memory unit upon an affirmative determination by the determination unit; and a sound output unit that outputs the masking sound in the memory unit in accordance with the output timing and/or the output duration. | 08-29-2013 |
20150055973 | ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS HAVING IMPROVED VIBRATION HANDLING - An electrophotographic image forming apparatus includes a recording medium storage unit in which a recording medium is stored, a pickup unit to pick up the recording medium stored in the recording medium storage unit, a pair of transport rollers being engaged with each other to rotate and transport the recording medium picked up by the pickup unit; an image forming unit to form an image on the recording medium transferred by the pair of transport rollers; and a frame including a first support region to support at least one of the pair of transport rollers, and a second support region to support at least a part of the image forming unit, wherein the frame further includes a vibration blocking slit that is disposed between the first and second support regions to block vibration from being transmitted from the first support region to the second support region. | 02-26-2015 |
20150110516 | IMAGE FORMING APPARATUS - An image forming apparatus includes an apparatus body including an image forming unit that forms an image; an opening/closing member that is openable or closeable with respect to a portion of an external surface of the apparatus body; and an absorption member disposed on the opening/closing member at a side facing the image forming unit, the absorption member absorbing sound while facing a portion of the image forming unit in a state where the opening/closing member is closed with respect to the apparatus body. | 04-23-2015 |
20150110517 | SOUND ABSORBER AND IMAGE FORMING APPARATUS INCORPORATING SAME - A sound absorber includes a duct member constituting a resonance pathway, the duct member including a pathway portion communicating ends of the duct member; a base member including a concave portion; and a cover member including a neck in which to insert the duct member. The cover member covers the concave portion of the base member, and the cover member combined with the base member forms a resonance space having a volume V The resonance pathway has dimensions of a length LH and a cross-sectional area SH and communicates the resonance space and an exterior of the sound absorber. The sound absorber has a resonance frequency fH determined by fH=(c/2π)·(SH/V·LH) | 04-23-2015 |
20150117893 | Image Forming Apparatus Having Image Forming Unit - An image forming apparatus includes a casing, a cover unit, and a liquid channel. The cover unit is disposed above an image forming unit. The cover unit includes a first member, a second member, and a neighboring portion positioned between the first member and the second member. The liquid channel is configured to guide liquid and includes a first channel and a second channel. The first channel is disposed between the neighboring portion and the image forming unit. The first channel includes a recess part and a liquid outlet. The recess part is disposed below the neighboring portion and extending toward the frame in an extending direction. The liquid outlet is positioned at an end portion of the recess part in the extending direction. The second channel is disposed at the frame. The second channel is configured to allow liquid to pass through the frame in the extending direction. | 04-30-2015 |
20160026144 | IMAGE FORMING APPARATUS - An image forming apparatus includes a driving force transmitting mechanism transmitting a driving force from a driving source to a rotating member through a plurality of coupled driving force transmitting members. The driving force transmitting mechanism has a supporting member and a drive case. The support member supports the driving source and the rotating members. The drive case is provided on the support member and forms a closed space with the supporting member. The closed space stores the driving force transmitting members. The drive case is formed with a sound insulating part. The sound insulating part has at least either one of concave and convex parts at a position closest to the coupling part of the driving force transmitting members. | 01-28-2016 |
20160033928 | IMAGE FORMING APPARATUS - According to an aspect of the invention, an image forming apparatus includes an apparatus body, a sound absorbing device utilizing a Helmholtz resonator, and a hinged exterior cover operable to open and close relative to the apparatus body. The hinged exterior cover is a hinged cover configured to pivot about a pivot shaft arranged at a lower end portion of the hinged exterior cover. At least a part of the hinged exterior cover has a multiplex structure made by overlaying a plurality of plate-like members on one another. The sound absorbing device is formed by utilizing space between two plate-like members of the plurality of plate-like members making up the multiplex structure as a cavity of the Helmholtz resonator. | 02-04-2016 |
20160111075 | ACOUSTIC DEVICE, AND ELECTRONIC DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME - An acoustic device includes an opening; a flange forming the opening; a first member including the opening and the flange; and a second member joined to the first member, thereby forming a cavity. The second member is formed of a material with a density lower than a material of the first member. | 04-21-2016 |
20160161904 | IMAGE FORMING APPARATUS - An image forming apparatus includes an apparatus body, an image forming section, an ejected recording medium container, and a sound absorber. The image forming section forms an image on a recording medium and ejects the recording medium from an ejection port. The ejected recording medium container includes an opening at at least one side of the apparatus body and a space facing the ejection port to contain the recording medium ejected from the ejection port. The sound absorber is disposed on the ejected recording medium container. | 06-09-2016 |