US5212531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing position adjustment mechanism for printer
Assignee: Pentax Corp
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Filing: 1991-04-08
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Granted: 1993-05-18
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Expires: 2011-04-08
Abstract
Abstract In a printing position adjusting mechanism employed in an image forming apparatus using a continuous form recording medium having perforated tear lines at predetermined intervals, are sensors are provided for detecting a leading edge of the recording medium and outputting a predetermined signal synchronously with the feeding of the recording medium. With the printing position adjusting mechanism, the period of time, between the detection of the leading edge of the continuous sheet and outputting of the predetermined signal, is adjustable. The apparatus starts printing upon receiving the predetermined signal which is outputted after a predetermined time has elapsed after the leading edge of the continuous sheet is detected.
Inventors
- 👤 Yoshio Monma
- 👤 Ikuo Negoro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:35
CPC Classifications
B; B41; B41J; B41J13/00; B41J13/26; B41J11/00; B41J11/36; B41J11/42
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
115 words
An apparatus for forming an image on a recording medium, said apparatus comprising: (a) means for feeding the recording medium; (b) means for generating a pulse signal, the number of pulses of said pulse signal corresponding to the feeding amount of said recording medium; (c) means for detecting a predetermined position on said recording medium; and (d) means for shifting the phase of said pulse signal in relation to said predetermined position of said recording medium, wherein said means for shifting the phase of said pulse signal comprises means for mounting said means for generating a pulse signal, said mounting means being movable to change the position of said means for generating a pulse signal.
Claim 2
Independent Claim
115 words
An apparatus for forming an image on a recording medium, said apparatus comprising: (a) means for feeding the recording medium; (b) means for generating a pulse signal, the number of pulses of said pulse signal corresponding to the feeding amount of said recording medium; (c) means for detecting a predetermined position on said recording medium; and (d) means for shifting the phase of said pulse signal in relation to said predetermined position of said recording medium, wherein said means for shifting the phase of said pulse signal comprises means for mounting said means for generating a pulse signal, said mounting means being movable to change the position of said means for generating a pulse signal.
Claim 3
Dependent Claim
24 words
The apparatus according to claim 1, wherein said means for generating a pulse signal generates pulses synchronously with the feeding of the recording medium.
Claim 4
Dependent Claim
53 words
The apparatus according to claim 2, wherein said means for generating a pulse signal comprises a photosensor means and a disk member rotated synchronously with the feeding of the recording medium, said disk member having at least one slit, said photosensor means detecting said at least one slit and generating said pulse signal.
Claim 5
Dependent Claim
25 words
The apparatus according to claim 3, wherein said disk member includes a plurality of slits, said plurality of slits being arranged at predetermined angular intervals.
Claim 6
Dependent Claim
26 words
The apparatus according to claim 3, wherein said mounting means is movable to change the position where said photosensor means detects said at least one slit.
Claim 7
Dependent Claim
17 words
The apparatus according to claim 5, wherein said mounting means is movable in a substantially linear direction.
Claim 8
Dependent Claim
16 words
The apparatus according to claim 6, wherein said substantially linear direction is a substantially vertical direction.
Claim 9
Dependent Claim
17 words
The apparatus according to claim 6, wherein said substantially linear direction is tangential to said disk member.
Claim 10
Dependent Claim
21 words
The apparatus according to claim 1, wherein said recording medium is a continuous form sheet having tear lines at predetermined intervals.
Claim 11
Dependent Claim
19 words
The apparatus according to claim 9, wherein a tear line is at said predetermined position of said recording medium.
Claim 12
Dependent Claim
22 words
The apparatus according to claim 1, wherein said means for detecting a predetermined position detects a leading end of said recording medium.
Claim 13
Dependent Claim
40 words
The apparatus according to claim 1, wherein said means for shifting the phase includes means for setting a predetermined period of time between the detection of the predetermined position and the generation of a first pulse of said pulse signal.
Claim 14
Dependent Claim
56 words
The apparatus according to claim 1, wherein said recording medium is a continuous form sheet having longitudinally spaced feed holes along at least one edge thereof, said means for feeding includes tractor means having projections for engaging respective feed holes, said means for generating a pulse signal generating pulses synchronously with movement of said tractor means.
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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) | 1996-05-17 | 1996-11-16 | 1997-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-17 | 2000-11-16 | 2001-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-17 | 2004-11-16 | 2005-05-18 | $7700.00 | Window Closed / Lapsed |