EP0497440A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Image copying apparatus with single read/write head carriage, providing directionally correct copies
Assignee: Xerox Corp
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Filing: 1992-01-02
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Granted: —
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Expires: 2012-01-02
Abstract
Abstract A digital copying apparatus produces a right reading image (20) with an image reading unit (13a, 13b) co-mounted on a carriage (22) with an image printing unit (18). After a width of a document is scanned, either bidirectionally or unidirectionally, and digitized, it is stored in a band memory buffer (122) before it is printed on the next successive sweep. The digitized data stored in the band memory buffer may be processed while it is stored, prior to being printed. <IMAGE>
Inventors
- 👤 Denis J. Stemmle
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:36
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/19; H04N1/191; H04N1/1911; H04N1/207; H04N1/32; H04N1/32358; H04N1/10; H04N1/1013; H04N1/1017; H04N2201/00; H04N2201/0077; H04N2201/0081; H04N2201/0082; H04N2201/04; H04N2201/0402; H04N2201/0466; H04N2201/0468; H04N2201/32; H04N2201/3285; H04N2201/329; H04N2201/3294
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
134 words
A method for making on a copy sheet a right reading copy of information on a document in a system having a carriage including an image reading unit co-mounted on the carriage with an image printing unit, comprising the steps of: moving the carriage in a first direction with respect to the document and reading a first portion of the document with the image reading unit; digitizing the information read from the first portion of the document to form first digitized information; storing the first digitized information in a memory; moving the carriage in a second direction with respect to the document; and accessing the first digitized information from the memory and printing the first digitized information as a first portion of the copy sheet as the carriage is moved in the second direction.
Claim 2
Dependent Claim
21 words
A method as claimed in claim 1, wherein the second direction is opposite to, or the same as, the first direction.
Claim 3
Dependent Claim
74 words
A method as claimed in claim 1 or claim 2, further including the steps of: reading information contained in a second portion of the document while the carriage is moved in the second direction and the first digitized information is printed on the first portion of the copy sheet; digitizing the information read from the second portion of the document to form second digitized information; and storing the second digitized information in the memory.
Claim 4
Independent Claim
31 words
A method as claimed in any one of the preceding claims, further including the step of holding the document and the copy sheet in fixed positions during movement of the carriage.
Claim 5
Independent Claim
36 words
A method as claimed in any one of the preceding claims, further including the step of indexing the carriage with respect to the document and the copy sheet in a direction orthogonal to the first direction.
Claim 6
Independent Claim
29 words
A method as claimed in any one of the preceding claims, wherein the accessing step includes accessing the first digitized information in the sequence in which it was stored.
Claim 7
Independent Claim
37 words
A method as claimed in any one of the preceding claims, wherein the accessing step includes accessing the first digitized information in a sequence reversed from the sequence in which it was originally stored in the memory.
Claim 8
Dependent Claim
55 words
A method as claimed in claim 3, for making on a copy sheet having N portions à right reading copy of information on a document having N portions, the method comprising performing all of the said steps, N times, until all N portions of the document are copied onto the copy paper in N portions.
Claim 9
Dependent Claim
100 words
A method as claimed in claim 3, for making on a copy sheet having N portions à right reading copy of information on a document having N portions, the method comprising performing all of the said steps N-1 times, and including a precedent sequence comprising only reading a top or bottom portion of the document, digitizing the read information and storing such information, and including a final sequence following the N-1 performances comprising only accessing the last stored portion of digitized information and printing the digitized information so accessed on a corresponding bottom or top portion of the copy sheet.
Claim 10
Dependent Claim
184 words
An imaging system comprising: means for holding a document having an image thereon; means for holding a copy sheet; image reading means for reading the document and for producing digitized image information representing the image on the document; memory means coupled to said image reading means for storing said digitized image information; printing means coupled to said memory means for accessing said digitized image information and for printing an image corresponding to said digitized image information on a copy sheet; means for causing relative movement of said image reading means and said printing means in a first direction and a second direction with respect to the document and the copy sheet; and means for controlling said image reading means and said memory means to produce and store digitized image information corresponding to a first portion of the document during said relative movement in said first direction and for controlling said printing means to print on a first portion of the copy sheet an image corresponding to digitized image information of said first portion of the document during said relative movement in said second direction.
Claim 11
Dependent Claim
21 words
An imaging system according to claim 10, wherein said first direction is opposite to, or the same as, said second direction.
Claim 12
Dependent Claim
59 words
An imaging system according to claim 10 or claim 11, wherein said controlling means controls said image reading means and said memory means to produce and store digitized image information corresponding to a second portion of the document during said relative movement in said second direction as said printing means prints in said first portion of the copy sheet.
Claim 13
Dependent Claim
32 words
An imaging system according to any one of claim 10 to 12, wherein said memory means and printing means together comprise a first-input-first-output memory access arrangement or a last-input-first-output memory access arrangement.
Claim 14
Dependent Claim
30 words
An imaging system according to any one of claim 10 to 12, wherein said memory means comprises a dual port memory buffer with a scan port and a print port.
Claim 15
Dependent Claim
44 words
An imaging system according to any one of claims 10 to 14, further comprising: means for causing indexing of said image reading means in a third direction transverse to said first and second directions so that subsequent portions of said document may be read.
References Cited (Backward Citations)
No citation records indexed.
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