Abstract: A cutting portion (cutting device) includes a fixed blade that extends in an intersecting direction (X axis direction) intersected with a transport direction transporting a roll paper, and a round blade that cuts the roll paper by relatively moving in the intersecting direction (X axis direction) with respect to the fixed blade in a state of being abutted on the fixed blade, in which the fixed blade extends over a portion of a range where the round blade relatively moves, and the round blade is in a separation state of being separated from the fixed blade in the transport direction when entering a region facing the fixed blade (cutting operation region) from a region not facing the fixed blade (standby region).

Abstract: A cutting portion (cutting device) includes a fixed blade that extends in an intersecting direction (X axis direction) intersected with a transport direction transporting a roll paper, and a round blade that cuts the roll paper by relatively moving in the intersecting direction (X axis direction) with respect to the fixed blade in a state of being abutted on the fixed blade, in which the fixed blade extends over a portion of a range where the round blade relatively moves, and the round blade is in a separation state of being separated from the fixed blade in the transport direction when entering a region facing the fixed blade (cutting operation region) from a region not facing the fixed blade (standby region).

Abstract: A sheet guide device has a crumpling prevention unit disposed to a movable part with a guide surface that guides a side edge of die-cut label paper conveyed over the top of a feed plate, and prevents crumpling the side portion of the die-cut label paper of which the side edge contacts the guide surface. The crumpling prevention unit includes a pressure-bearing base unit disposed protruding from the top of the feed plate and causing the side portion of the passing die-cut label paper to rise to the side; a sheet presser part that presses the die-cut label paper to the conveyance path surface at the same or adjacent position to the pressure-bearing base unit; and a side presser member that the side edge of the die-cut label paper inclined by the pressure-bearing base unit contacts.

Abstract: A sheet guide device has a crumpling prevention unit disposed to a movable part with a guide surface that guides a side edge of die-cut label paper conveyed over the top of a feed plate, and prevents crumpling the side portion of the die-cut label paper of which the side edge contacts the guide surface. The crumpling prevention unit includes a pressure-bearing base unit disposed protruding from the top of the feed plate and causing the side portion of the passing die-cut label paper to rise to the side; a sheet presser part that presses the die-cut label paper to the conveyance path surface at the same or adjacent position to the pressure-bearing base unit; and a side presser member that the side edge of the die-cut label paper inclined by the pressure-bearing base unit contacts.

Abstract: An inkjet line printer has a first encoder for detecting the media conveyance distance of the paper feed roller, and a second encoder for generating a signal to control the ink ejection timing. The encoder scales of the first encoder and second encoder are disposed to the intermediate roller of a speed reducing mechanism that transfers drive power from the paper feed motor to the paper feed roller. Because the second encoder outputs a pulse signal with a predetermined number of pulses in the time the recording paper is conveyed a specific distance by the paper feed roller, the signal from the second encoder can be used as a signal to control the timing of ink ejection from the inkjet head.

Abstract: A developing device includes: a developer carrier that carries toner thereon; a toner supply member that supplies toner to the developer carrier; a development chamber having the developer carrier and the toner supply member; a replaceable toner cartridge that supplies toner to the development chamber and collects toner from the development chamber; and a contact member that is in contact with the toner supply member to form a nip portion. At the time of replacement to the toner cartridge that contains new toner therein, the new toner is supplied from the toner cartridge into the development chamber and is made to pass through a nip portion between the toner supply member and the contact member within the development chamber, and then nip-passed toner is collected from the development chamber into the toner cartridge.

Abstract: A developing cartridge includes: a developer carrier which carries toner; a toner supply member which supplies the toner to the developer carrier; a regulation member which regulates an amount of toner on the developer carrier; a developing chamber which has the developer carrier and the toner supply member; a transport section which is connected to an upper portion and a lower portion of the developing chamber and transports the toner from the lower portion of the developing chamber to the upper portion of the developing chamber; and a transport member which is disposed inside the transport section and transports the toner while agitating the toner. A capacity of the transport section is larger than a capacity of the developing chamber.

Abstract: A charger includes: a first charging member that contacts an image carrier and a second charging member that contacts the image carrier downstream from the first charging member. At the time of image formation, a voltage higher than the discharge start voltage of the first charging member is applied to the first charging member and a voltage lower than the discharge start voltage of the second charging member and lower than the voltage applied to the first charging member is applied to the second charging member, and at the time when an image is not formed, a voltage lower than the discharge start voltage of the first charging member is applied to the first charging member and a voltage higher than the discharge start voltage of the second charging member and higher than the voltage applied to the first charging member is applied to the second charging member.

Abstract: A charger includes: a charging brush which is rotatably provided and is brought into contact with an image carrier to charge the surface of the image carrier; a charging roller which is brought into contact with the image carrier at a portion on the downstream side relative to the charging brush in the rotational direction of the image carrier to charge the surface of the image carrier; and a controller which controls voltages applied to the charging brush and charging roller, wherein the controller controls voltages applied to the charging brush and charging roller such that one-fifth of the absolute value of a charging brush current flowing between the image carrier and charging brush is lower than the absolute value of a charging roller current flowing between the image carrier and charging roller.

Abstract: A developing device includes a housing that forms a development chamber therein and a developer containing portion that forms a developer containing chamber therein and contains a one-component developer. A first transport path supplies a developer from the developer containing chamber to an upper side of the development chamber. A second transport path collects a developer from a lower side of the development chamber to the developer containing chamber. A developer carrier is disposed in the development chamber and carries a developer thereon. A developer supply member is disposed in the development chamber and supplies a developer to the developer carrier. A regulating member is in contact with the developer carrier and regulates a developer on a surface of the developer carrier. Stirring of the developer in the development chamber is performed by driving the first transport path and the second transport path to transport the developer.

Abstract: A developing device includes a developing agent carrying body that carries toner, a toner supply member that supplies toner to the developing agent carrying body, a regulating member that regulates an amount of toner present on the developing agent carrying body, a developing chamber having the developing agent carrying body, the toner supply member and the regulating member, and a replaceable toner cartridge that supplies toner to the developing chamber and collects the toner from the developing chamber. When the toner cartridge is replaced with a toner cartridge storing new toner, the new toner is supplied to the developing chamber from the toner cartridge. The new toner and the toner remaining in the developing chamber are agitated to form agitated toner, and the agitated toner is collected in the toner cartridge from the developing chamber.

Abstract: A developing cartridge includes: a developer carrier which carries toner; a toner supply member which supplies the toner to the developer carrier; a regulation member which regulates an amount of toner on the developer carrier; a developing chamber which has the developer carrier and the toner supply member; a transport section which is connected to an upper portion and a lower portion of the developing chamber and transports the toner from the lower portion of the developing chamber to the upper portion of the developing chamber; and a transport member which is disposed inside the transport section and transports the toner while agitating the toner. A capacity of the transport section is larger than a capacity of the developing chamber.

Abstract: A developing device includes: a developer carrier that carries toner thereon; a toner supply member that supplies toner to the developer carrier; a development chamber having the developer carrier and the toner supply member; a replaceable toner cartridge that supplies toner to the development chamber and collects toner from the development chamber; and a contact member that is in contact with the toner supply member to form a nip portion. At the time of replacement to the toner cartridge that contains new toner therein, the new toner is supplied from the toner cartridge into the development chamber and is made to pass through a nip portion between the toner supply member and the contact member within the development chamber, and then nip-passed toner is collected from the development chamber into the toner cartridge.

Abstract: A developing device includes: a replaceable toner cartridge; a development chamber; a first transport path which connects the toner cartridge to the development chamber; a first transport unit which transports toner from the toner cartridge to the development chamber through the first transport path; a second transport path which connects the development chamber to the toner cartridge; and a second transport unit which discharges the toner within the development chamber to the toner cartridge through the second transport path at the time of replacement of the toner cartridge.

Abstract: A charger includes: a primary charging member which is rotatably provided and is brought into contact with an image carrier to charge the surface of the image carrier; a secondary charging member which is brought into contact with the image carrier at a portion on the downstream side relative to the first charging member in the rotational direction of the image carrier to charge the surface of the image carrier; and a controller which controls voltages applied to the first and second charging members, wherein at the time of image formation, the controller applies, to the first charging member, a voltage whose absolute value is higher than the absolute value of the discharge start voltage of the first charging member and applies, to the second charging member, a voltage whose absolute value is lower than the absolute value of the discharge start voltage of the second charging member and whose absolute value is lower than the voltage applied to the first charging member, and at the time when an image is not for

Abstract: A charger includes: a charging brush which is rotatably provided and is brought into contact with an image carrier to charge the surface of the image carrier; a charging roller which is brought into contact with the image carrier at a portion on the downstream side relative to the charging brush in the rotational direction of the image carrier to charge the surface of the image carrier; and a controller which controls voltages applied to the charging brush and charging roller, wherein the controller controls voltages applied to the charging brush and charging roller such that one-fifth of the absolute value of a charging brush current flowing between the image carrier and charging brush is lower than the absolute value of a charging roller current flowing between the image carrier and charging roller.