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公开(公告)号：AU5147179A
公开(公告)日：1980-05-15
申请号：AU5147179
申请日：1979-10-04
Applicant: IBM
Inventor： ENGLE VENCIL DELANO , MAROWSKI RAYMOND MICHAEL , POLLARD EDWARD ELLETT , PULLEN JOHN LIGGETTE
IPC: B41J13/02 , B41J13/036 , B41J13/076 , B41J13/048
Abstract: A paper feed roll assembly is disclosed which is pivotally mounted on a central point with three degrees of freedom of movement. The feed rolls are engageable with the periphery of the platen. Additionally, the support for the paper feed rolls is deflectable about the central point by a feed roll release member to effect the withdrawal of the feed rolls from the periphery of the platen to enhance paper insertion and removal. The pivot point support provides for freedom of movement in the three necessary degrees of freedom to allow equilization of feed roll force against the platen and for alignment of the feed rolls with the periphery of the platen to insure proper paper feed. The feed roll truck frame, by virtue of its pivotal mounting, may be deflected downward to permit release or insertion of the paper. A deflection means or eccentric bar is disclosed for deflecting the truck member away from the periphery of the platen against the force of the pivot support acting toward the platen.
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Patent Agency Ranking
公开(公告)号：AU5654486A
公开(公告)日：1986-11-06
申请号：AU5654486
申请日：1986-04-23
Applicant: IBM
Inventor： ENGLE VENCIL DELANO , HAFER CAMERON HENRY , HUGHES FRANK MARION , STEGER DONALD JUNE , STEWART EDWARD GORDON , STREET RAMON LEGRAND , THOMPSON JOHN ADDISON
Abstract: The thermal transfer medium (28) is fed past a thermal printhead (21) at a substantially constant velocity by a feed roll (82) engaging the transfer medium (28) just prior to the printhead (21) to maintain a portion of the transfer medium (28) between the printhead (21) and the feed roll (82) relatively stiff. The feed roll (82) is mounted on a cartridge (30) having the transfer medium (28) supplied therefrom. A drag brake (70) is disposed in the feed path of the thermal transfer medium (28) prior to the feed roll (82) to cause a substantially constant premetering tension to be applied to the transfer medium (28) irrespective of the coefficient of friction between the drag brake (70) and the thermal transfer medium (28). A carrier (14), which supports the printhead (21) and a feed roll driver, is driven separately from the feed roll driver so that various ratios between the velocities of the thermal transfer medium (28) and the carrier (14) are obtained to produce various print qualities. The peel angle of the thermal transfer medium (28) from a print medium (12) is maintained at a relatively low angle to increase the contact time between the thermal transfer medium (28) and the recording medium (12).
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公开(公告)号：BR8601759A
公开(公告)日：1986-12-23
申请号：BR8601759
申请日：1986-04-18
Applicant: IBM
Inventor： ENGLE VENCIL DELANO , HAVER CAMERON HENRY , HUGHES FRANK MARION , STEGER DONALD JUNE , STEWARD EDWARD GORDON , STREET RAMON LEGRAND , THOMPSON JOHN ADDISON
Abstract: The thermal transfer medium (28) is fed past a thermal printhead (21) at a substantially constant velocity by a feed roll (82) engaging the transfer medium (28) just prior to the printhead (21) to maintain a portion of the transfer medium (28) between the printhead (21) and the feed roll (82) relatively stiff. The feed roll (82) is mounted on a cartridge (30) having the transfer medium (28) supplied therefrom. A drag brake (70) is disposed in the feed path of the thermal transfer medium (28) prior to the feed roll (82) to cause a substantially constant premetering tension to be applied to the transfer medium (28) irrespective of the coefficient of friction between the drag brake (70) and the thermal transfer medium (28). A carrier (14), which supports the printhead (21) and a feed roll driver, is driven separately from the feed roll driver so that various ratios between the velocities of the thermal transfer medium (28) and the carrier (14) are obtained to produce various print qualities. The peel angle of the thermal transfer medium (28) from a print medium (12) is maintained at a relatively low angle to increase the contact time between the thermal transfer medium (28) and the recording medium (12).
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公开(公告)号：IT7926957D0
公开(公告)日：1979-10-31
申请号：IT2695779
申请日：1979-10-31
Applicant: IBM
Inventor： MOROWSKI RAYMOND MICHAEL , ENGLE VENCIL DELANO , POLLARD EDWARD ELLETT , PULLEN JOHN LIGGETTE
IPC: B41J13/02 , B41J13/036 , B41J13/076 , B41J
Abstract: A paper feed roll assembly is disclosed which is pivotally mounted on a central point with three degrees of freedom of movement. The feed rolls are engageable with the periphery of the platen. Additionally, the support for the paper feed rolls is deflectable about the central point by a feed roll release member to effect the withdrawal of the feed rolls from the periphery of the platen to enhance paper insertion and removal. The pivot point support provides for freedom of movement in the three necessary degrees of freedom to allow equilization of feed roll force against the platen and for alignment of the feed rolls with the periphery of the platen to insure proper paper feed. The feed roll truck frame, by virtue of its pivotal mounting, may be deflected downward to permit release or insertion of the paper. A deflection means or eccentric bar is disclosed for deflecting the truck member away from the periphery of the platen against the force of the pivot support acting toward the platen.
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公开(公告)号：AU582233B2
公开(公告)日：1989-03-16
申请号：AU5654486
申请日：1986-04-23
Applicant: IBM
Inventor： ENGLE VENCIL DELANO , HAFER CAMERON HENRY , HUGHES FRANK MARION , STEGER DONALD JUNE , STEWART EDWARD GORDON , STREET RAMON LEGRAND , THOMPSON JOHN ADDISON
Abstract: The thermal transfer medium (28) is fed past a thermal printhead (21) at a substantially constant velocity by a feed roll (82) engaging the transfer medium (28) just prior to the printhead (21) to maintain a portion of the transfer medium (28) between the printhead (21) and the feed roll (82) relatively stiff. The feed roll (82) is mounted on a cartridge (30) having the transfer medium (28) supplied therefrom. A drag brake (70) is disposed in the feed path of the thermal transfer medium (28) prior to the feed roll (82) to cause a substantially constant premetering tension to be applied to the transfer medium (28) irrespective of the coefficient of friction between the drag brake (70) and the thermal transfer medium (28). A carrier (14), which supports the printhead (21) and a feed roll driver, is driven separately from the feed roll driver so that various ratios between the velocities of the thermal transfer medium (28) and the carrier (14) are obtained to produce various print qualities. The peel angle of the thermal transfer medium (28) from a print medium (12) is maintained at a relatively low angle to increase the contact time between the thermal transfer medium (28) and the recording medium (12).
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公开(公告)号：IT1165336B
公开(公告)日：1987-04-22
申请号：IT2695779
申请日：1979-10-31
Applicant: IBM
Inventor： ENGLE VENCIL DELANO , MOROWSKI RAYMOND MICHAEL , POLLARD EDWARD ELLETT , PULLEN JOHN LIGGETTE
IPC: B41J13/02 , B41J13/036 , B41J13/076 , B41J
Abstract: A paper feed roll assembly is disclosed which is pivotally mounted on a central point with three degrees of freedom of movement. The feed rolls are engageable with the periphery of the platen. Additionally, the support for the paper feed rolls is deflectable about the central point by a feed roll release member to effect the withdrawal of the feed rolls from the periphery of the platen to enhance paper insertion and removal. The pivot point support provides for freedom of movement in the three necessary degrees of freedom to allow equilization of feed roll force against the platen and for alignment of the feed rolls with the periphery of the platen to insure proper paper feed. The feed roll truck frame, by virtue of its pivotal mounting, may be deflected downward to permit release or insertion of the paper. A deflection means or eccentric bar is disclosed for deflecting the truck member away from the periphery of the platen against the force of the pivot support acting toward the platen.
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