Typewriting machines – Means auxiliary to typewriting function – Frame – casing – or support for typewriter
Patent
1992-09-15
1994-11-15
Wiecking, David A.
Typewriting machines
Means auxiliary to typewriting function
Frame, casing, or support for typewriter
361686, 400 88, 400208, 400680, 400633, B41J 2902
Patent
active
053641965
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a laptop portable computer (PC) having a base housing with an input keyboard, a screen and a printer arrangement.
With increasing miniaturization, some years ago it proved possible for the first time to manufacture high-performance computers as desktop devices or deskside devices so that they could be used as independent devices at the workstation of a user; such computers were called personal computers (PC). Continued development resulted in a further reduction of the dimensions and weight of personal computers, so that it was possible to accommodate them in portable cases as so-called portables. The latest development are what are called laptops; these are briefcase-format personal computers with a low weight which can be used in areas in which it has hitherto not been possible to utilize computers because they were too large and too heavy.
A severe drawback of previously known laptop computers is the fact that they have no printer, or only a very basic one. In particular, until now it has not been possible to integrate a printer that can print, for example, the current standard commercial A4 format in a laptop computer. With most laptop computers, therefore, it is only possible to connect a conventional printer, which greatly restricts the use of the computer as a mobile device.
A portable computer having a base housing with an input keyboard, a screen and a printer arrangement in which a printer is directly integrated (EPSON HX-20) is also already known. With this known device, the input keyboard, the screen and the printer arrangement are combined in a base housing, the front part of the top side of the device facing the user being occupied by the input keyboard, while a printer, a screen and a microcassette station are arranged next to one another in the rear region of the base housing. In this arrangement only approximately one third of the device width is available for each of the aforementioned components in each case. The printer used in the known laptop computer has therefore a line width of only 24 characters, so that it cannot be used for a large number of computing tasks, in particular for word processing.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a laptop portable computer having a base housing with an input keyboard, a screen and a printer arrangement which essentially has the same performance as conventional personal computers, but which in particular is also capable of printing paper in the conventional A4 format or similar formats, forms and the like.
While in the known solutions, given an essentially predetermined overall size of the device (briefcase format), the printer is assigned the space which remains free after accommodation of the input keyboard, the screen and if appropriate further components, according to the present invention the base housing is first and foremost adapted to the printing tasks, in that one of the principal dimensions of the base housing, preferably its width, is essentially utilized entirely for the width of the transport channel, so that formats corresponding to this width can be printed. As a result of the selected arrangement of the transport channel, a support surface which essentially corresponds to the base area of the base housing is created for the printing medium. Accordingly, the printer arrangement is designed as a flat-bed printer which in conjunction with a suitable printing head is excellently suited to the printing of forms, to the production of copies, etc.
The arrangement according to the invention allows a high-performance printer to be accommodated in the base housing, and its dimensions to be kept compact enough that the input keyboard and/or the screen can be placed on the base housing, as units separate from the base housing, in a non-operating position, without the essentially predetermined overall dimensions of the laptop format being exceeded. This configuration constitutes the transport configuration. For use, the input keyboard and the screen
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Baitz Gunter
Burchart Joachim
Siemens Nixdorf Informationssysteme Aktiengesellschaft
Wiecking David A.
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