摘要:
An image forming apparatus that is capable of forming an appropriate image even on a special transfer sheet, such as a thick and rigid transfer sheet (e.g., a cardboard and an envelope) and a long transfer sheet, etc. In the image forming apparatus, when the thick and rigid transfer sheet is used, a transfer bias applied to first and second transfer devices is increased by about 10 to 30% compared to that applied when a normal transfer sheet is used, and a temperature of fixing rollers is increased by about 10 to 30% compared to that when the normal transfer sheet is used. When the long transfer sheet that is longer than a circumferential length of a second image bearing member is used, an image transfer onto the second image bearing member is prohibited. In addition, the temperature of the fixing rollers is increased by about 10 to 30% compared to that when the normal transfer sheet is used.
摘要:
The image forming apparatus comprises a plurality of toner cartridges (TC,a,b,c,d) and a sheet discharging roller (34). A sheet discharging tray (40) is configured to stack the recoding medium discharged by the sheet discharging roller (34). The tray (40) is inclined in a downward direction toward the sheet discharging roller (34) and serves as a cover, which when opened allows the replacement of the plurality of toner cartridges (TC,a,b,c,d) such that a toner cartridge (d) placed nearest to a side of the sheet discharging roller (34) is located in position lower than the sheet discharging roller.
摘要:
An image forming apparatus of the present invention includes a plurality of image carriers (2Y,2M,2C,2BK) arranged along a first intermediate image transfer belt (3). Toner images of different colors formed on the image carriers are sequentially transferred to the first intermediate image transfer belt (3) one above the other to complete a first image. The first image is transferred to a second image transfer belt (15) and then transferred to one side of a sheet. At the same time, a second image completed on the first image transfer belt (3) is directly transferred to the other side of the same sheet. First and second control means are respectively disposed in the loop of the first intermediate image transfer body and the loop of the second intermediate image transfer body. The apparatus of the present invention can form color images on both sides of the recording medium rapidly in accurate register.
摘要:
An image forming apparatus of the present invention includes an intermediate image transfer belt (3) elongate in the up-and-down direction and a plurality of sheet feeders (15A-15E) arranged one above the other at one side of the belt. The image forming apparatus is well balanced in height and width and therefore easy to operate and stable when installed at the user's station.
摘要:
An image forming apparatus of the present invention is operable in a duplex print mode for printing images on both sides of a recording medium. A toner image is transferred from a first image carrier (1) to a second image carrier (10) and then transferred from the second image carrier to one side of the recording medium. Subsequently, a toner image is transferred from the first image carrier to the other side of the recording medium. After the toner image has been transferred from the first image carrier to the second image carrier, the second image carrier is moved in the reverse direction to a preselected position. The apparatus of the present invention enhances productivity in the duplex print mode. Furthermore, the polarity of the charge of the image carried on said second image carrier (10) is inverted. The second image carrier (10) is a belt with a mechanism to prevent offset.
摘要:
An image forming apparatus that is capable of forming an appropriate image even on a special transfer sheet, such as a thick and rigid transfer sheet (e.g., a cardboard and an envelope) and a long transfer sheet, etc. In the image forming apparatus, when the thick and rigid transfer sheet is used, a transfer bias applied to first and second transfer devices is increased by about 10 to 30 % compared to that applied when a normal transfer sheet is used, and a temperature of fixing rollers is increased by about 10 to 30% compared to that when the normal transfer sheet is used. When the long transfer sheet that is longer than a circumferential length of a second image bearing member is used, an image transfer onto the second image bearing member is prohibited. In addition, the temperature of the fixing rollers is increased by about 10 to 30 % compared to that when the normal transfer sheet is used.
摘要:
An image forming apparatus includes an image bearing member that bears a visual image, a visual image forming device that forms the visual image on the image bearing member, and a two-side transfer device including a recording medium holding member spanning a plurality of stretch members to hold a recording medium thereon. The two-side transfer device transfers the visual images on the image bearing member onto both sides of the recording medium on the recording medium holding member while the recording medium holding member is being moved in a predetermined direction. The image bearing member intrudes into a part of the recording medium holding member spanning two adjacent ones of the plurality of stretch members by an intrusion amount of about 0.2 mm or greater so that the recording medium holding member moves in contact with the image bearing member, having a contact width in a predetermined direction.
摘要:
An image forming apparatus of the present invention includes a first and a second intermediate image transfer belt contacting each other to form a nip for secondary image transfer. While the nip is heated, a sheet is passed through the nip to thereby transfer toner images respectively formed on the first and second belts to opposite surfaces of the sheet at the same time. The nip is sized such that image transfer and fixation can be effected at temperature higher than the melting point or the softening point of toner by 5°C to 50°C.