摘要:
An image forming apparatus comprises a toner-bearing member that bears toner and makes the toner clouded thereon. A toner passage control device including plural widthwise lines of toner passage holes in a printing medium conveyance direction is provided. Each of the toner passage holes includes a control electrode that controls passage of the toner through each of the toner passage holes toward a printing medium. a control pulse proving device provides a control pulse to the control electrode to operate. The control pulse applied to the control electrode of the one of the plural lines is different from that applied to the control electrode of the other one of the plural lines.
摘要:
An image forming apparatus comprises a toner-bearing member that bears toner and makes the toner clouded thereon. A toner passage control device including plural widthwise lines of toner passage holes in a printing medium conveyance direction is provided. Each of the toner passage holes includes a control electrode that controls passage of the toner through each of the toner passage holes toward a printing medium. a control pulse proving device provides a control pulse to the control electrode to operate. The control pulse applied to the control electrode of the one of the plural lines is different from that applied to the control electrode of the other one of the plural lines.
摘要:
The present invention provides an image forming apparatus, which is able to prevent the adherence of toner on the surface of toner controlling means and around a toner passage hole, and to stably carry out toner passage ON/OFF control when forming an image using the direct recording method. This image forming apparatus includes: a toner carrier; recording medium means; toner controlling means, disposed between the toner carrier and recording medium means, and having a plurality of toner passage holes; and cloud electrode means disposed between the toner carrier and toner controlling means, a toner cloud being formed by applying an AC bias between the toner carrier and cloud electrode means. A control electrode and a common electrode are disposed in toner controlling means, and when the toner of the toner carrier is able to pass through the toner controlling means toward recording medium means, a loop-shaped line of electric force is formed between the recording medium means side and the toner controlling means common electrode, the loop-shaped line by-passing the control electrode.
摘要:
An image forming device, including a toner bearer including plural linear electrodes located at a first regular pitch in a crosswise direction thereof, flying a toner on the surface thereof between the plural linear electrodes with a pulse voltage thereto to form a floating toner layer; and a substrate including plural hole-electrode combinations arranged in a longitudinal direction of the linear electrodes, each formed of a through-hole and a hole-adjacent electrode located close to the through-hole, wherein the floating toner layer is formed in an area facing the through-hole, and a toner passes through only the through-holes facing a desired image from the floating toner layer with a record on or off voltage, and the plural hole-electrode combinations are lined at a second regular pitch in a crosswise direction of the toner bearer, and the second regular pitch is an integral multiple of the first regular pitch.
摘要:
An image forming device, including a toner bearer including plural linear electrodes located at a first regular pitch in a crosswise direction thereof, flying a toner on the surface thereof between the plural linear electrodes with a pulse voltage thereto to form a floating toner layer; and a substrate including plural hole-electrode combinations arranged in a longitudinal direction of the linear electrodes, each formed of a through-hole and a hole-adjacent electrode located close to the through-hole, wherein the floating toner layer is formed in an area facing the through-hole, and a toner passes through only the through-holes facing a desired image from the floating toner layer with a record on or off voltage, and the plural hole-electrode combinations are lined at a second regular pitch in a crosswise direction of the toner bearer, and the second regular pitch is an integral multiple of the first regular pitch.
摘要:
A direct image-recording device in which a predetermined gap set between an image carrier and a hole forming member can be maintained, and an image forming apparatus provided with the direct image-recording device. In the direct image-recording device including: housing that accommodates an agent; an agent carrier that is rotatably supported by the housing and faces outside from an opening formed in the housing; a sheet-like hole forming member having a plurality of holes formed therein and facing the agent carrier at a predetermined distance therefrom; and a plurality of electrodes, by which the agent flies, provided at the hole forming member correspondingly to each of the plurality of holes and form an electric field causing the agent to fly selectively from the agent carrier toward the hole, a positioning member is provided at the housing so as to cover the agent carrier, the positioning member being configured to hold the hole forming member along the axial direction of the agent carrier by a side wall of the positioning member that has open portions formed in locations at least opposing the plurality of holes formed in the hole forming member, and configured to position the holes relative to the agent carrier so that the relative positions of the agent carrier and the holes are in a predetermined positional relationship.
摘要:
A direct image-recording device in which a predetermined gap set between an image carrier and a hole forming member can be maintained, and an image forming apparatus provided with the direct image-recording device. In the direct image-recording device including: housing that accommodates an agent; an agent carrier that is rotatably supported by the housing and faces outside from an opening formed in the housing; a sheet-like hole forming member having a plurality of holes formed therein and facing the agent carrier at a predetermined distance therefrom; and a plurality of electrodes, by which the agent flies, provided at the hole forming member correspondingly to each of the plurality of holes and form an electric field causing the agent to fly selectively from the agent carrier toward the hole, a positioning member is provided at the housing so as to cover the agent carrier, the positioning member being configured to hold the hole forming member along the axial direction of the agent carrier by a side wall of the positioning member that has open portions formed in locations at least opposing the plurality of holes formed in the hole forming member, and configured to position the holes relative to the agent carrier so that the relative positions of the agent carrier and the holes are in a predetermined positional relationship.
摘要:
An image creating apparatus includes a casing that stores therein an agent, an agent carrier rotatably supported by the casing, a hole defining member defining a plurality of holes therein and opposed to the agent carrier, a plurality of spray electrodes provided on the hole defining member respectively corresponding to the holes and forming an electric field for selectively causing the agent to be sprayed from the agent carrier towards the holes, and a positioning member provided on the casing to cover the agent carrier and positioning the hole defining member with respect to the agent carrier so that the agent carrier and the hole defining member are in a predetermined positional relationship. The angle of the positioning member is adjustable relative to the casing about a rotation shaft that is coaxial with the agent carrier.
摘要:
An image forming apparatus, which reduces toner spatter and produces a good quality image when forming a toner image using the direct recording method. An image forming part includes: a toner carrier for carrying toner; and toner controlling means, which is disposed between the toner carrier and recording paper on which the toner is made to adhere, and which has a plurality of toner passage holes, the toner controlling means having a control electrode for controlling the passage of toner on the toner carrier side surface in the area around the toner passage hole, and forming a toner image by causing the toner to fly to the recording paper, and the image forming apparatus having liquid applying/humidifying means for either applying a liquid to or humidifying the imaging surface of the recording paper prior to forming a toner image.
摘要:
An image forming apparatus, which reduces toner spatter and produces a good quality image when forming a toner image using the direct recording method. An image forming part includes: a toner carrier for carrying toner; and toner controlling means, which is disposed between the toner carrier and recording paper on which the toner is made to adhere, and which has a plurality of toner passage holes, the toner controlling means having a control electrode for controlling the passage of toner on the toner carrier side surface in the area around the toner passage hole, and forming a toner image by causing the toner to fly to the recording paper, and the image forming apparatus having liquid applying/humidifying means for either applying a liquid to or humidifying the imaging surface of the recording paper prior to forming a toner image.