EP0509406A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Apparatus for feeding recording paper
Assignee: Toshiba Tec Corp
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Filing: 1992-04-09
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Granted: —
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Expires: 2012-04-09
Abstract
Abstract The apparatus according to the present invention includes a platen roller gear (58), a white roller gear (60), a motor (68), a gear train (72) connected to the motor (68), a relay mechanism (92) for transmitting a force from the gear train (72) to the platen roller gear (58) and the gear (60), and a switching mechanism (94). The relay mechanism (92) has a driving gear (96), and a first driven gear (108) constantly meshed with the gear (96), a second driven gear (110) constantly meshed with the gear (96), and a third driven gear (116) constantly meshed with the gear (108). By combining the switching operation of the mechanism (94) and the switching of rotational direction of the motor (68), a torque is transmitted to at least one of the gear (58) and the gear (60) via the mechanism (92), whereby paper can be fed in the transmission, reception and copy operation modes by a single motor (68) and recording paper (158, 164) can be fed backwards in the reception and copy operation modes.
Inventors
- 👤 Hideaki Sugiyama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 23:55
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/00567; H04N1/0057; H04N1/00588; H04N1/00591; H04N1/00599; H04N1/00602
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
377 words
An apparatus for feeding recording paper, comprising: recording means (56), including a platen roller (42) and a printing head (40) between which recording paper (158, 164) is passed, for effecting recording on the recording paper (158, 164); original read means (36), including a white roller (54) and an original read sensor (52) between which an original (166) is passed, for reading an image on the original (166) by means of the original read sensor (52); a single motor (68) having a forwardly/reversely rotatable output shaft (70); transmission means (72) connected to the output shaft (70); a platen roller gear (58) fixed on the platen roller (42); a white roller gear (60) fixed on the white roller (54); and operation mode selection means (90), connected to the transmission means (72), for controlling the rotation of each of the platen roller gear (58) and the white roller gear (60), characterized in that said operation mode selection means (90) includes a relay mechanism (92), provided between the platen roller gear (58) and the white roller gear (60), for transmitting a torque from the transmission means (72) selectively to at least one of the platen roller gear (58) and the white roller gear (60), and a switching mechanism (94) having first and second operation positions which are selected to control the selection operation of the relay mechanism (92), and that the white roller gear (60) is rotated forwardly when the switching mechanism (94) is in the first operation position and the output shaft (70) is rotated forwardly; the platen roller gear (58) is rotated forwardly to pass the recording paper (158, 164) through the recording means (56) when the switching mechanism (94) is in the first operation position and the output shaft (70) is rotated reversely; the white roller gear (60) is rotated forwardly and simultaneously the platen roller gear (58) is rotated forwardly to pass the recording paper (158, 164) through the recording means (56), when the switching mechanism (94) is in the second operation position and the output shaft (70) is rotated reversely; and the platen roller gear (58) is rotated reversely to feed the recording paper (158, 164) backwards when the switching mechanism (94) is in the second operation position and the output shaft (70) is rotated forwardly.
Claim 2
Dependent Claim
17 words
The apparatus according to claim 1, characterized in that said transmission means (72) is a gear train.
Claim 3
Dependent Claim
240 words
The apparatus according to claim 2, characterized in that said relay mechanism (92) includes: a driving gear (96) constantly meshed with a first output gear (75) of the transmission means (72); a first driven gear (108) constantly meshed with the driving gear (96), said first driven gear (108) being capable of revolving around the driving gear (96) while rotating about its own axis, so that a torque is or is not input to the platen roller gear (58) and the white roller gear (60); a second driven gear (110) constantly meshed with the driving gear (96), said second driven gear (110) being capable of revolving around the driving gear (96) while rotating about its own axis, so that a torque is or is not input to the platen roller gear (58); and a third driven gear (116) constantly meshed with the first driven gear (108), said third driven gear (116) being capable of revolving around the first driven gear (108) while rotating about its own axis, so that a torque is or is not input to the white roller gear (60), and wherein said switching mechanism (94) stops movement of the first driven gear (108) in the circumferential direction of the driving gear (96) when the switching mechanism (94) is in the first operation position, and said switching mechanism (94) releases the stop of the first driven gear (108) when the switching mechanism (94) is in the second operation position.
Claim 4
Dependent Claim
48 words
The apparatus according to claim 1, characterized in that said platen roller gear (58) is interlocked with the first driven gear (108) or the second driven gear (110) via a plurality of idler gears (152, 154) provided between the platen roller gears (58) and the relay mechanism (92).
Claim 5
Dependent Claim
24 words
The apparatus according to claim 1, characterized in that said motor (68) is a drum-shaped stepping motor having a vertically extending output shaft (70).
Claim 6
Dependent Claim
70 words
The apparatus according to claim 5, characterized in that said motor (68) and said recording means (56) are situated apart from each other in the direction of feeding the recording paper (158, 164), said original read means (36) is situated between the motor (68) and the recording means (56), and the transmission means (72) is situated between the output shaft (70) of the motor (68) and the relay mechanism (92).
Claim 7
Dependent Claim
42 words
The apparatus according to claim 6, characterized in that the recording means (56), the original read means (36), the transmission means (72) and the operation mode selection means (90) are contained substantially in the range of height (h) of the motor (68).
Claim 8
Dependent Claim
587 words
The apparatus according to claim 2, characterized in that said relay mechanism (92) includes: a driving gear (96) constantly meshed with a first output shaft (75) of the transmission means (72); a first stationary gear support shaft (98) having one end portion (98a) and the other end portion (98b) between which said driving gear (96) is rotatably supported; a first swing arm (100) supported rotatably at said one end portion (98a) of the first gear support shaft (98); a second gear support shaft (102) attached to a free end portion of the first swing arm (100) in parallel to the first gear support shaft (98); a second swing arm (104) supported rotatably at said other end portion (98b) of the first gear support shaft (98); a third gear support shaft (106) attached to a free end portion of the second swing arm (104) in parallel to the first gear support shaft (98); a first driven gear (108) constantly meshed with the driving gear (96) and supported rotatably on the second gear support shaft (102), said first driven gear (108) being capable of revolving around the driving gear (96) while rotating about its own axis, so that a torque is or is not input to the platen roller gear (58) and the white roller gear (60); a second driven gear (110) constantly meshed with the driving gear (96) and supported rotatably on the third gear support shaft (106), said second driven gear (110) being capable of revolving around the driving gear (96) while rotating about its own axis, so that a torque is or is not input to the platen roller gear (58); a third swing arm (112) supported rotatably on the second gear support shaft (102); a fourth gear support shaft (114) attached to a free end portion of the third swing arm (112) in parallel to the second gear support shaft (102); a third driven gear (116) constantly meshed with the first driven gear (108) and supported rotatably on the fourth gear support shaft (114), said third driven gear (116) being capable of revolving around the first driven gear (108) while rotating about its own axis, so that a torque is or is not input to the white roller gear (60); an engaging portion receiver (118) provided at the free end portion of the first swing arm (100); a first stopper (120) provided at a longitudinal middle portion of the first swing arm (100) and being engageable with and disengageable from the third swing arm (112); a second stopper (122) provided near the third swing arm (112), said second stopper (122) being put in and out of contact with the third swing arm (112); and a third stopper (124) provided near the second swing arm (104), said third stopper (124) being put in and out of contact with the second swing arm (104), and wherein said switching mechanism (94) includes: a stationary support shaft (130); a lever (132) provided at the support shaft (130) and seesawing on the support shaft (130); an engaging portion (136) provided at one end portion of the lever (130) and being engageable with and disengageable from the engaging portion receiver (118); and a solenoid (134) having a plunger (140) coupled to the other end portion of the lever (132), and moving the lever (132) to a first operation position where the engaging portion (136) is engaged with the engaging portion receiver (118) or to a second operation position where the engaging portion (136) is disengaged from the engaging portion receiver (118).
Claim 9
Dependent Claim
120 words
The apparatus according to claim 5, characterized in that said motor (68) and said recording means (56) are situated apart from each other in the direction of feeding the recording paper (158, 164), said original read means (36) is situated between the motor (68) and the recording means (56), the transmission means (72) is situated between the output shaft (70) of the motor (68) and the relay mechanism (92), a one-way clutch (64) and an ADF roller (50) having an ADF roller gear (62) provided via the one-way clutch (64) are situated between the motor (68) and the original read means (36), and said transmission means (72) has a second output gear (89) meshed with the ADF roller gear (62).
Claim 10
Dependent Claim
46 words
The apparatus according to claim 9, characterized in that the recording means (56), the original read means (36), the transmission means (72), the operation mode selection means (90) and the ADF roller (50) are contained substantially in the range of height (h) of the motor (68).
Claim 11
Independent Claim
475 words
An apparatus for feeding recording paper, comprising: a body casing (10) having a recording paper insertion hole (18), a recording paper discharge hole (22) and an original insertion hole (14), the recording paper insertion hole (18) and the original insertion hole (14) being located on the upper surface of the casing (10); recording means (56) provided within the body casing (10) and including a platen roller (42) and a printing head (40) between which recording paper (158, 164) is passed, for effecting recording on the recording paper (158, 164); original read means (36) provided within the body casing (10) and including a white roller (54) and an original read sensor (52) between which an original (166) is passed, for reading an image on the original (166) by means of the original read sensor (52); a single motor (68) having a forwardly/reversely rotatable output shaft (70); transmission means (72) connected to the output shaft (70); a platen roller gear (58) fixed on the platen roller (42); a white roller gear (60) fixed on the white roller (54); and operation mode selection means (90), connected to the transmission means (72), for controlling the rotation of each of the platen roller gear (58) and the white roller gear (60), characterized in that said operation mode selection means (90) includes a relay mechanism (92), provided between the platen roller gear (58) and the white roller gear (60), for transmitting a torque from the transmission means (72) selectively to at least one of the platen roller gear (58) and the white roller gear (60), and a switching mechanism (94) having first and second operation positions which are selected to control the selection operation of the relay mechanism (92), and that the white roller gear (60) is rotated forwardly when the switching mechanism (94) is in the first operation position and the output shaft (70) is rotated forwardly; the platen roller gear (58) is rotated forwardly to pass the recording paper (158, 164) through the recording means (56) when the switching mechanism (94) is in the first operation position and the output shaft (70) is rotated reversely; the white roller gear (60) is rotated forwardly and simultaneously the platen roller gear (58) is rotated forwardly to pass the recording paper (158, 164) through the recording means (56), when the switching mechanism (94) is in the second operation position and the output shaft (70) is rotated reversely; and the platen roller gear (58) is rotated reversely to feed the recording paper (158, 164) backwards when the switching mechanism (94) is in the second operation position and the output shaft (70) is rotated forwardly, wherein the platen roller gear (58), the white roller gear (60), the motor (68), the transmission means (72) and the operation mode selection means (90) are arranged on one side in the width direction of the body casing (10).
References Cited (Backward Citations)
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