Patent US4560990A successfully refreshed from Google Patents.
US4560990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording paper feeding apparatus
Assignee: Ricoh Co Ltd
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Filing: 1983-08-30
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Granted: 1985-12-24
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Expires: 2003-08-30
Abstract
Abstract A recording paper feeding apparatus for use in a recording machine such as a facsimile machine includes a predetermined paper travelling path along which a recording head, a platen roller, a cutter and a paper discharging roller are disposed. In one form of the present invention, a first detector for detecting presence and absence of the recording paper is disposed upstream of the recording head and a second detector for detecting presence and absence of the recording paper is disposed downstream of the cutter. And, signal sound is produced when both of the detectors detect presence of the paper, indicating that the paper is properly loaded. In another form, a switch is provided and if at least one of the detectors is detecting absence of the paper when the switch is actuated, alarm sound is produced, indicating that the paper is not properly loaded.
Inventors
- 👤 Takaji Sue
- 👤 Masatoshi Sugie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:18
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/24; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/58; G03B27/587; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4455; Y10T83/4564; Y10T83/525; Y10T83/531
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
176 words
Apparatus for indicating a loading condition of recording paper to be transported along a predetermined travelling path along which is disposed means for recording said recording paper and means for cutting said recording paper in the downstream of said means for recording with respect to the advancing direction of said recording paper along said path, said apparatus comprising: first detecting means disposed at a first position in the upstream of said means for recording with respect to the advancing direction of said recording paper for detecting presence and absence of said recording paper at said first position; second detecting means disposed at a second position in the downstream of said means for cutting with respect to the advancing direction of said recording paper for detecting presence and absence of said recording paper at said second position; means for generating a first signal when both of said first and second detecting means have detected presence of said recording paper at said first and second positions, respectively; and means for moving said recording paper along said travelling path.
Claim 2
Dependent Claim
176 words
Apparatus for indicating a loading condition of recording paper to be transported along a predetermined travelling path along which is disposed means for recording said recording paper and means for cutting said recording paper in the downstream of said means for recording with respect to the advancing direction of said recording paper along said path, said apparatus comprising: first detecting means disposed at a first position in the upstream of said means for recording with respect to the advancing direction of said recording paper for detecting presence and absence of said recording paper at said first position; second detecting means disposed at a second position in the downstream of said means for cutting with respect to the advancing direction of said recording paper for detecting presence and absence of said recording paper at said second position; means for generating a first signal when both of said first and second detecting means have detected presence of said recording paper at said first and second positions, respectively; and means for moving said recording paper along said travelling path.
Claim 3
Dependent Claim
21 words
Apparatus of claim 1 further comprising means responsive to said first signal to produce first sound having a first predetermined frequency.
Claim 4
Dependent Claim
31 words
Apparatus of claim 1 further comprising means for storing said recording paper in the form of a roll, said recording paper moving along said travelling path as unwound from said roll.
Claim 5
Dependent Claim
21 words
Apparatus of claim 3 wherein said means for recording includes a recording head which defines a part of said travelling path.
Claim 6
Dependent Claim
20 words
Apparatus of claim 4 wherein said recording head is a thermal recording head and said recording paper is heat-sensitive paper.
Claim 7
Dependent Claim
27 words
Apparatus of claim 4 wherein said means for moving includes a platen roller against which said recording head may be pressed with said recording paper sandwiched therebetween.
Claim 8
Dependent Claim
25 words
Apparatus of claim 6 wherein said means for moving includes a reversibly rotatable motor for driving said platen roller to rotate in a desired direction.
Claim 9
Dependent Claim
43 words
Apparatus of claim 6 further comprising a pair of upper and lower guide plates spaced apart from each other over a predetermined distance to define a part of said travelling path and disposed between said means for storing and said means for recording.
Claim 10
Dependent Claim
33 words
Apparatus of claim 8 wherein said pair of guide plates are curved in compliance with the tendency of said recording paper to curl as unwound from said roll in said means for storing.
Claim 11
Dependent Claim
52 words
Apparatus of claim 9 wherein said lower guide plate has its bottom end located in the vicinity of the contact between said recording head and said platen roller and said upper guide plate has its bottom end terminating short of the bottom end of said lower guide plate, thereby defining an opening.
Claim 12
Dependent Claim
32 words
Apparatus of claim 1 further comprising: a switch; and means responsive to said first signal and also to the actuation of said switch for setting said recording paper ready for recording operation.
Claim 13
Dependent Claim
68 words
Apparatus of claim 11 wherein said means for setting causes said recording paper to move along said travelling path over a first predetermined distance in the forward direction, causes said recording paper to be cut by said means for cutting and causes said recording paper to move over a second predetermined distance in the backward direction when said switch is actuated with the presence of said first signal.
Claim 14
Dependent Claim
38 words
Apparatus of claim 1 further comprising: a switch; and means for generating a second signal when said switch is actuated while at least one of said first and second detecting means is detecting absence of said recording paper.
Claim 15
Dependent Claim
22 words
Apparatus of claim 13 further comprising means responsive to said second signal to produce a second sound having a second predetermined frequency.
Claim 16
Dependent Claim
12 words
Apparatus of claim 14 wherein said second sound is an alarm sound.
Claim 17
Dependent Claim
25 words
Apparatus of claim 14 wherein said switch is so mounted to be operated by the motion of a part of a housing of said apparatus.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-23 | 1989-06-24 | 1989-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-23 | 1993-06-24 | 1993-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-23 | 1997-06-24 | 1997-12-24 | $7700.00 | Window Closed / Lapsed |